U.S. patent application number 13/018974 was filed with the patent office on 2011-08-04 for golf ball.
Invention is credited to Hirotaka Nakamura, Takahiro Sajima.
Application Number | 20110190077 13/018974 |
Document ID | / |
Family ID | 44342141 |
Filed Date | 2011-08-04 |
United States Patent
Application |
20110190077 |
Kind Code |
A1 |
Sajima; Takahiro ; et
al. |
August 4, 2011 |
GOLF BALL
Abstract
A ball 2 has, in a ball surface layer area, an aroma layer 16
including a scent component. The aroma layer 16 is provided
locally. The aroma layer 16 may be provided on the entire surface.
The scent component is preferably at least one member selected from
the group consisting of terpenes, ester compounds, aromatic
compounds, ether compounds, aldehyde compounds, alcohol compounds,
natural essential oils, hydrocarbons, ketone compounds, lactone
compounds, and nitrogen-containing compounds. A
perfume-material-encapsulating microcapsule may be used. The local
aroma layer 16 is preferably provided by stamping. The aroma layer
may be formed by spraying. A scent adsorbent may be further used.
Preferably, the golf ball 2 is put into a package 20.
Inventors: |
Sajima; Takahiro; (Kobe-shi,
JP) ; Nakamura; Hirotaka; (Kobe-shi, JP) |
Family ID: |
44342141 |
Appl. No.: |
13/018974 |
Filed: |
February 1, 2011 |
Current U.S.
Class: |
473/378 |
Current CPC
Class: |
A63B 37/12 20130101 |
Class at
Publication: |
473/378 |
International
Class: |
A63B 37/12 20060101
A63B037/12 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 2, 2010 |
JP |
2010-020813 |
Claims
1. A golf ball comprising an aroma layer having a scent component,
the aroma layer being provided in a ball surface layer area,
wherein the aroma layer is provided on the entire surface.
2. The golf ball according to claim 1, wherein the scent component
is at least one member selected from the group consisting of
terpenes, ester compounds, aromatic compounds, ether compounds,
aldehyde compounds, alcohol compounds, ketone compounds, natural
essential oils, hydrocarbons, lactone compounds, and
nitrogen-containing compounds.
3. The golf ball according to claim 1, wherein the aroma layer is
formed by using a liquid (A) which includes the scent component and
which may be diluted with a solvent.
4. The golf ball according to claim 3, wherein the solvent is an
alcohol compound.
5. The golf ball according to claim 3, wherein a content Ra of the
scent component in the liquid (A) is equal to or greater than 10%
by weight and equal to or less than 100% by weight.
6. The golf ball according to claim 1, wherein the aroma layer is
formed by spraying.
7. The golf ball according to claim 6, wherein a coating amount of
the scent component applied by the spraying per ball is equal to or
greater than 10 mg and equal to or less than 100 mg.
8. A golf ball comprising an aroma layer having a scent component,
the aroma layer being provided in a ball surface layer area,
wherein the aroma layer is provided locally.
9. The golf ball according to claim 8, wherein the scent component
is at least one member selected from the group consisting of
terpenes, ester compounds, aromatic compounds, ether compounds,
aldehyde compounds, alcohol compounds, ketone compounds, natural
essential oils, hydrocarbons, lactone compounds, and
nitrogen-containing compounds.
10. The golf ball according to claim 9, wherein the aroma layer is
formed by using a liquid (B) obtained by diluting the scent
component with a solvent, or a composition (C) including a
perfume-material-encapsulating microcapsule which encapsulates the
scent component.
11. The golf ball according to claim 10, wherein the solvent is an
alcohol compound.
12. The golf ball according to claim 10, wherein a content Rb of
the scent component in the liquid (B) is equal to or greater than
5% by weight and equal to or less than 30% by weight.
13. The golf ball according to claim 10, wherein a film material of
the perfume-material-encapsulating microcapsule is at least one
member selected from the group consisting of melamine resins,
polyurethane resins, gelatin, and urea-formalin resins.
14. The golf ball according to claim 10, wherein a content Rc of
the perfume-material-encapsulating microcapsule in the composition
(C) is equal to or greater than 0.3% by weight and equal to or less
than 10% by weight.
15. The golf ball according to claim 14, wherein a film material of
the perfume-material-encapsulating microcapsule can be changed in
quality and/or broken by stimulation.
16. The golf ball according to claim 15, wherein the stimulation is
physical stimulation.
17. The golf ball according to claim 15, wherein the stimulation is
chemical stimulation.
18. The golf ball according to claim 8, wherein the local aroma
layer is formed by stamping.
19. The golf ball according to claim 8, further comprising an
entire surface aroma layer having a scent component and provided on
the entire surface.
20. The golf ball according to claim 19, wherein the entire surface
aroma layer is formed by using a liquid (A) which includes the
scent component and which may be diluted with a solvent.
21. The golf ball according to claim 20, wherein the solvent is an
alcohol compound.
22. The golf ball according to claim 20, wherein a content Ra of
the scent component in the liquid (A) is equal to or greater than
10% by weight and equal to or less than 100% by weight.
23. The golf ball according to claim 19, wherein the scent
component included in the entire surface aroma layer is at least
one member selected from the group consisting of terpenes, ester
compounds, aromatic compounds, ether compounds, aldehyde compounds,
alcohol compounds, ketone compounds, natural essential oils,
hydrocarbons, lactone compounds, and nitrogen-containing
compounds.
24. The golf ball according to claim 19, wherein the entire surface
aroma layer is formed by spraying.
25. The golf ball according to claim 24, wherein a coating amount
of the scent component applied by the spraying per ball is equal to
or greater than 10 mg and equal to or less than 100 mg.
26. The golf ball according to claim 1, wherein the golf ball is
contained in a package having airtightness.
27. The golf ball according to claim 1, wherein a scent of the
scent component and a color of the ball are related to each
other.
28. The golf ball according to claim 1, wherein the golf ball is
colored in a color other than white.
Description
[0001] This application claims priority on Patent Application No.
2010-20813 filed in JAPAN on Feb. 2, 2010. The entire contents of
this Japanese Patent Application are hereby incorporated by
reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to golf balls.
[0004] 2. Description of the Related Art
[0005] Many golf balls are white, but golf balls which are not
white are also known.
[0006] Meanwhile, golf balls to each of which a scent is provided
are known. JP2008-93117 (US2008/085783) discloses a golf ball
having a paint film which contains a microcapsule encapsulating a
perfume material. The golf ball has excellent persistence of the
scent.
SUMMARY OF THE INVENTION
[0007] A scent provided to a golf ball can positively influence a
golf player. The scent can provide an exhilarating feel, a
refreshing feel, a comforting feel, or the like to a golf
player.
[0008] Meanwhile, a golf ball which is not white (hereinafter, also
referred to as color golf ball) improves its discrimination and
visibility. In addition, an appearance which is not white can
provide an upscale image to a golf ball.
[0009] Golf is a mental sport. The appearance and scent of a golf
ball could improve a score of a golf player. In addition, the
appearance and scent of the ball can influence its commercial
value. The inventor of the present invention has conceived a new
technical idea regarding color or scent.
[0010] An object of the present invention is to provide a golf ball
having a high added value.
[0011] In a golf ball of a first aspect, an aroma layer having a
scent component is provided in a ball surface layer area. The aroma
layer is provided on the entire surface.
[0012] Preferably, the scent component is at least one member
selected from the group consisting of terpenes, ester compounds,
aromatic compounds, ether compounds, aldehyde compounds, alcohol
compounds, ketone compounds, natural essential oils, hydrocarbons,
lactone compounds, and nitrogen-containing compounds.
[0013] Preferably, the aroma layer is formed by using a liquid (A)
which includes the scent component and which may be diluted with a
solvent.
[0014] Preferably, the solvent is an alcohol compound.
[0015] Preferably, a content Ra of the scent component in the
liquid (A) is equal to or greater than 10% by weight and equal to
or less than 100% by weight.
[0016] Preferably, the aroma layer is formed by spraying.
[0017] Preferably, a coating amount of the scent component applied
by the spraying per ball is equal to or greater than 10 mg and
equal to or less than 100 mg.
[0018] In a golf ball of a second aspect, an aroma layer having a
scent component is provided in a ball surface layer area. The aroma
layer is provided locally.
[0019] Preferably, the scent component is at least one member
selected from the group consisting of terpenes, ester compounds,
aromatic compounds, ether compounds, aldehyde compounds, alcohol
compounds, ketone compounds, natural essential oils, hydrocarbons,
lactone compounds, and nitrogen-containing compounds.
[0020] Preferably, the aroma layer is formed by using a liquid (B)
obtained by diluting the scent component with a solvent, or a
composition (C) including a perfume-material-encapsulating
microcapsule which encapsulates the scent component. Preferably,
the solvent is an alcohol compound.
[0021] Preferably, a content Rb of the scent component in the
liquid (B) is equal to or greater than 5% by weight and equal to or
less than 30% by weight.
[0022] Preferably, a film material of the
perfume-material-encapsulating microcapsule is at least one member
selected from the group consisting of melamine resins, polyurethane
resins, gelatin, and urea-formalin resins.
[0023] Preferably, a content Rc of the
perfume-material-encapsulating microcapsule in the composition (C)
is equal to or greater than 0.3% by weight and equal to or less
than 10% by weight.
[0024] Preferably, a film material of the
perfume-material-encapsulating microcapsule can be changed in
quality and/or broken by stimulation. Preferably, the stimulation
is physical stimulation. Alternatively, preferably, the stimulation
is chemical stimulation.
[0025] Preferably, the local aroma layer is formed by stamping.
[0026] Preferably, in addition to the local aroma layer, an entire
surface aroma layer is further provided.
[0027] Preferably, the entire surface aroma layer is formed by
using a liquid (A) which includes the scent component and which may
be diluted with a solvent.
[0028] Preferably, the solvent is an alcohol compound.
[0029] Preferably, a content Ra of the scent component in the
liquid (A) is equal to or greater than 10% by weight and equal to
or less than 100% by weight.
[0030] Preferably, the scent component included in the entire
surface aroma layer is at least one member selected from the group
consisting of terpenes, ester compounds, aromatic compounds, ether
compounds, aldehyde compounds, alcohol compounds, ketone compounds,
natural essential oils, hydrocarbons, lactone compounds, and
nitrogen-containing compounds.
[0031] Preferably, the entire surface aroma layer is formed by
spraying.
[0032] Preferably, a coating amount of the scent component applied
by the spraying per ball is equal to or greater than 10 mg and
equal to or less than 100 mg.
[0033] Preferably, the golf ball is contained in a package having
airtightness.
[0034] The aroma layer and/or the package may further include a
scent adsorbent. The scent adsorbent is preferably a porous
body.
[0035] Preferably, a scent of the scent component and a color of
the ball are related to each other.
[0036] Preferably, the golf ball is colored in a color other than
white.
[0037] The golf ball of the present invention has excellent scent
or excellent scent retention. The golf ball can have a high added
value.
BRIEF DESCRIPTION OF THE DRAWINGS
[0038] FIG. 1 is a partially cutaway cross-sectional view of a golf
ball according to an embodiment of the present invention;
[0039] FIG. 2 is a side view of a package containing balls
according to the embodiment of the present invention; and
[0040] FIG. 3 is a perspective view of the package which can be
used in the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0041] The following will describe in detail the present invention
based on preferred embodiments with reference to the accompanying
drawings.
[0042] A golf ball 2 shown in FIG. 1 includes a spherical core 4, a
mid layer 6 positioned outside the core 4, and a cover 8 positioned
outside the mid layer 6. On the surface of the cover 8, a large
number of dimples 10 are formed. Of the surface of the golf ball 2,
a part other than the dimples 10 is a land 12. The golf ball 2
includes a paint layer 14 positioned outside the cover 8. The paint
layer 14 is shown only in an enlarged part of FIG. 1. The golf ball
2 may include another layer between the core 4 and the mid layer 6.
The golf ball 2 may include another layer between the mid layer 6
and the cover 8. In the present invention, the internal structure
of the ball 2 is not limited to a specific structure. The golf ball
2 may be a one-piece golf ball, a two-piece golf ball, a
three-piece golf ball, or a multi-piece golf ball having four or
more pieces.
[0043] The golf ball 2 has a diameter of 40 mm to 45 mm. From the
standpoint of conformity to the rules established by the United
States Golf Association (USGA), the diameter is preferably equal to
or greater than 42.67 mm. In light of suppression of air
resistance, the diameter is preferably equal to or less than 44 mm,
and particularly preferably equal to or less than 42.80 mm. The
golf ball 2 has a weight of 40 g or greater and 50 g or less. In
light of attainment of great inertia, the weight is preferably
equal to or greater than 44 g, and particularly preferably equal to
or greater than 45.00 g. From the standpoint of conformity to the
rules established by the USGA, the weight is preferably equal to or
less than 45.93 g.
[0044] The core 4 is formed by crosslinking a rubber composition.
Examples of base rubbers for use in the rubber composition include
polybutadienes, polyisoprenes, styrene-butadiene copolymers,
ethylene-propylene-diene copolymers, and natural rubbers. Two or
more of these rubbers may be used in combination. In light of
resilience performance, polybutadienes are preferred, and in
particular, high-cis polybutadienes are preferred.
[0045] In order to crosslink the core 4, a co-crosslinking agent is
suitably used. Examples of preferable co-crosslinking agents in
light of resilience performance include zinc acrylate, magnesium
acrylate, zinc methacrylate, and magnesium methacrylate.
Preferably, the rubber composition includes an organic peroxide
together with a co-crosslinking agent. Examples of suitable organic
peroxides include dicumyl peroxide,
1,1-bis(t-butylperoxy)-3,3,5-trimethylcyclohexane,
2,5-dimethyl-2,5-di(t-butylperoxy)hexane, and di-t-butyl
peroxide.
[0046] According to need, various additives such as a filler,
sulfur, a vulcanization accelerator, a sulfur compound, an
anti-aging agent, a coloring agent, a plasticizer, a dispersant,
and the like are included in the rubber composition for the core 4
in an adequate amount. Crosslinked rubber powder or synthetic resin
powder may be also included in the rubber composition.
[0047] The core 4 has a diameter of 30.0 mm or greater and
particularly 38.0 mm or greater. The diameter of the core 4 is
equal to or less than 42.0 mm, and particularly equal to or less
than 41.5 mm. The core 4 may be formed with two or more layers and
may have a rib on the surface thereof. The core 4 may be hollow.
Preferably, the core 4 is obtained by crosslinking a rubber
composition. Examples of preferable base rubbers for use in the
rubber composition include polybutadienes, polyisoprenes,
styrene-butadiene copolymers, ethylene-propylene-diene copolymers,
and natural rubbers. In light of resilience performance,
polybutadienes are preferred. When a polybutadiene and another
rubber are used in combination, it is preferred if the
polybutadiene is included as a principal component. The proportion
of the polybutadiene to the entire base rubber is preferably equal
to or greater than 50% by weight, and particularly preferably equal
to or greater than 80% by weight. The proportion of cis-1,4 bonds
in the polybutadiene is preferably equal to or greater than 40%,
and particularly preferably equal to or greater than 80%.
[0048] The rubber composition of the core 4 includes a
co-crosslinking agent. The co-crosslinking agent achieves high
resilience of the core 4. Examples of preferable co-crosslinking
agents in light of resilience performance include monovalent or
bivalent metal salts of an .alpha.,.beta.-unsaturated carboxylic
acid having 2 to 8 carbon atoms. Specific examples of preferable
co-crosslinking agents include zinc acrylate, magnesium acrylate,
zinc methacrylate, and magnesium methacrylate. In light of
resilience performance, zinc acrylate and zinc methacrylate are
particularly preferred.
[0049] In the present invention, the material of the core 4 is not
limited to specific material.
[0050] A resin composition is suitably used for the mid layer 6.
Examples of the base polymer of the resin composition include
ionomer resins, styrene block-containing thermoplastic elastomers,
thermoplastic polyester elastomers, thermoplastic polyamide
elastomers, and thermoplastic polyolefin elastomers.
[0051] Examples of preferable ionomer resins include binary
copolymers formed with an .alpha.-olefin and an
.alpha.,.beta.-unsaturated carboxylic acid having 3 to 8 carbon
atoms. Examples of other preferable ionomer resins include ternary
copolymers formed with: an .alpha.-olefin; an
.alpha.,.beta.-unsaturated carboxylic acid having 3 to 8 carbon
atoms; and an .alpha.,.beta.-unsaturated carboxylate ester having 2
to 22 carbon atoms. For the binary copolymer and the ternary
copolymer, preferable .alpha.-olefins are ethylene and propylene,
while preferable .alpha.,.beta.-unsaturated carboxylic acids are
acrylic acid and methacrylic acid. In the binary copolymer and the
ternary copolymer, some of the carboxyl groups are neutralized with
metal ions. Examples of metal ions for use in neutralization
include sodium ion, potassium ion, lithium ion, zinc ion, calcium
ion, magnesium ion, aluminum ion, and neodymium ion.
[0052] An ionomer resin and another resin may be used in
combination. Examples of polymers which can be used in combination
with an ionomer resin include ionomer resins which are binary
copolymers, styrene block-containing thermoplastic elastomers,
thermoplastic polyester elastomers, thermoplastic polyamide
elastomers, and thermoplastic polyolefin elastomers.
[0053] A preferable resin which can be used in combination with an
ionomer resin is a styrene block-containing thermoplastic
elastomer. This elastomer can contribute to the feel at impact of
the golf ball 2. This elastomer does not impair the resilience
performance of the golf ball 2. This elastomer includes a
polystyrene block as a hard segment, and a soft segment. Examples
of styrene block-containing thermoplastic elastomers include
styrene-butadiene-styrene block copolymers (SBS),
styrene-isoprene-styrene block copolymers (SIS),
styrene-isoprene-butadiene-styrene block copolymers (SIBS),
hydrogenated SBS, hydrogenated SIS, and hydrogenated SIBS. Examples
of hydrogenated SBS include styrene-ethylene-butylene-styrene block
copolymers (SEBS). Examples of hydrogenated SIS include
styrene-ethylene-propylene-styrene block copolymers (SEPS).
Examples of hydrogenated SIBS include
styrene-ethylene-ethylene-propylene-styrene block copolymers
(SEEPS).
[0054] Another polymer may be used for the cover 6 instead of an
ionomer resin. Examples of the other polymer include polyurethanes,
polystyrenes, polyamides, polyesters, and polyolefins. Two or more
of these polymers may be used in combination.
[0055] In the present invention, the material of the mid layer 6 is
not limited to specific material. The golf ball 2 may not include
the mid layer 6.
[0056] The mid layer 6 may have a thickness of 0.3 mm or greater,
and preferably 0.5 mm or greater. The thickness of the mid layer 6
may be equal to or less than 1.5 mm, preferably equal to or less
than 1.2 mm, and more preferably equal to or less than 1.0 mm.
[0057] The material of the cover 8 is, for example, an ionomer
resin. Examples of preferable ionomer resins include binary
copolymers formed with an .alpha.-olefin and an
.alpha.,.beta.-unsaturated carboxylic acid having 3 to 8 carbon
atoms. Examples of other preferable ionomer resins include ternary
copolymers formed with: an .alpha.-olefin; an
.alpha.,.beta.-unsaturated carboxylic acid having 3 to 8 carbon
atoms; and an .alpha.,.beta.-unsaturated carboxylate ester having 2
to 22 carbon atoms. For the binary copolymer and the ternary
copolymer, preferable .alpha.-olefins are ethylene and propylene,
while preferable .alpha.,.beta.-unsaturated carboxylic acids are
acrylic acid and methacrylic acid. In the binary copolymer and the
ternary copolymer, some of the carboxyl groups are neutralized with
metal ions. Examples of metal ions for use in neutralization
include sodium ion, potassium ion, lithium ion, zinc ion, calcium
ion, magnesium ion, aluminum ion, and neodymium ion.
[0058] Another polymer may be used for the cover 8 instead of an
ionomer resin. Examples of the other polymer include polyurethanes,
polystyrenes, polyamides, polyesters, and polyolefins. In light of
spin performance and scuff resistance, polyurethanes are preferred.
Two or more of these polymers may be used in combination.
[0059] According to need, a coloring agent such as titanium
dioxide, a filler such as barium sulfate, a dispersant, an
antioxidant, an ultraviolet absorber, a light stabilizer, a
fluorescent material, a fluorescent brightener, and the like are
included in the cover 8 in an adequate amount. For the purpose of
adjusting specific gravity, powder of a metal with a high specific
gravity such as tungsten, molybdenum, and the like may be included
in the cover 8.
[0060] The cover 8 has a thickness of 0.2 mm or greater and
particularly 0.3 mm or greater. The thickness of the cover 8 is
equal to or less than 2.5 mm, and particularly equal to or less
than 2.2 mm. The cover 8 has a specific gravity of 0.90 or greater
and particularly 0.95 or greater. The specific gravity of the cover
8 is equal to or less than 1.10, and particularly equal to or less
than 1.05. The cover 8 may be formed with two or more layers.
[0061] A resin component of the paint layer 14 is not limited to a
specific one. Examples of this resin component include acrylic
resins, epoxy resins, urethane resins, polyester resins, and
cellulose resins. As urethane resins, two-component curing type
urethane resins are preferred. When a two-component curing type
urethane resin is used, the paint layer 14 having excellent wear
resistance and durability can be obtained.
[0062] Two-component curing type urethane resins are urethane
resins which are cured by a reaction of a base material and a
curing agent. Examples of two-component curing type urethane resins
include resins obtained by curing a base material containing an
isocyanate group-terminal urethane prepolymer, with a curing agent
having active hydrogen. Other examples of two-component curing type
urethane resins include resins obtained by curing a base material
containing a polyol component, with a polyisocyanate and its
derivative.
[0063] The paint layer 14 and/or the cover 8 may include a
photoluminescent particle (composite particle). The
photoluminescent particle can improve appearance and
visibility.
[0064] The particle size of the photoluminescent particle is
preferably equal to or greater than 5 .mu.m and equal to or less
than 100 .mu.m. "The particle size being equal to or greater than 5
.mu.m and equal to or less than 100 .mu.m" means that 80% or more
of the particle out of the total volume of the particle has a size
in the range of 5 .mu.m to 100 .mu.m. The particle size is more
preferably equal to or greater than 5 .mu.m and equal to or less
than 80 .mu.m. The particle size is even more preferably equal to
or greater than 5 .mu.m and equal to or less than 60 .mu.m. When
the particle size is excessively large, a weld line may be highly
visible on the cover 8. In addition, when the particle size is
excessively large, an application line such as a spray gun and the
like may be clogged during application of the paint layer 14.
[0065] The particle size can be measured, for example, by laser
diffractometry using the Mastersizer manufactured by Malvern
Instruments Ltd.
[0066] Examples of the photoluminescent particle include particles
in which a core layer is coated with one or more layers formed from
a light-reflecting material. Examples of the core layer include
micas, pearl flakes, glass flakes, metals, and metal oxides.
Examples of the light-reflecting material include metals, metal
oxides, and metal nitrides. Examples of metals for the core layer
include at least one member selected from the group consisting of
aluminum, chromium, cobalt, gold, silver, nickel, and iron.
Examples of metal oxides which can be used for the core layer and
the light-reflecting material include titanium dioxide and iron
oxide.
[0067] Preferable photoluminescent particles are, for example,
particles in which a core layer is a mica and coated with a
light-reflecting material. Particles in which a core layer is a
mica and coated with a light-reflecting material formed from
titanium oxide or iron oxide, are more preferred.
[0068] Specific examples of the photoluminescent particle include a
particle in which a core layer is a mica and coated with a metal
oxide which is titanium oxide or iron oxide (trade name "Iriodin"
manufactured by Merck KGaA), a particle having a core layer which
is formed from a glass flake and coated with a metal oxide such as
titanium dioxide or iron oxide or with a metal such as gold,
silver, or nickel (trade name "Metashine" manufactured by Nippon
Sheet Glass Co., Ltd.), and a particle having a core layer which is
formed from aluminum or iron oxide and coated with a metal oxide
whirh is silicon dioxide nr irnn oxide t rale name "Variocrom"
manufactured by BASF Co., Ltd).
[0069] As a photoluminescent particle, a photochromic laminate may
be used. The photochromic laminate is formed by laminating polymer
layers having different refractive indexes. A preferable
photochromic laminate is formed by alternately laminating two types
of polymer layers having different refractive indexes.
[0070] The photochromic laminate is considered to exhibit excellent
photoluminescence due to the following mechanism. Specifically,
incident lights entering the photochromic laminate from the outside
are reflected at surfaces of the laminate and at interfaces of a
multi-layer structure, and these reflected lights interfere with
each other. Since the polymers having different refractive indexes
are laminated, a reflected light having a specific color is
intensified depending on angles of the reflected lights, the
thicknesses of the polymer layers, the number of laminated layers,
and the like, thereby developing a metallic luster which is
slightly differently seen depending on an angle at which it is
seen. A specific example of the photochromic laminate is trade name
"MORPHOTONE" manufactured by TEIJIN FIBERS LIMITED.
[Aroma Layer]
[0071] The golf ball 2 includes an aroma layer 16. In FIG. 1, areas
in which the aroma layer 16 is applied are hatched. The aroma layer
16 includes a scent component (perfume material).
[0072] In the overall view of FIG. 1 (a part which is not the
enlarged part), the thickness of the aroma layer 16 is shown so as
to be larger than the actual thickness.
[0073] The aroma layer 16 is provided in a surface layer area of
the ball. As shown in the enlarged part of FIG. 1, the aroma layer
16 is positioned outside the paint layer 14. The aroma layer 16 is
an outermost layer. The aroma layer 16, which is the outermost
layer, easily releases a scent.
[0074] The ball surface layer area means an area outside the ball
body, and, in a golf ball having a cover, it means an area outside
the cover.
[0075] The aroma layer 16 may not be the outermost layer. Even in
the case where the aroma layer 16 is not the outermost layer, it
may be possible to release the scent component. For example, in the
case where the aroma layer 16 is coated with a thin paint film, the
scent component may be released through the thin paint film to the
outside. In light of release of the scent component, the aroma
layer 16 is preferably positioned outside the paint layer 14.
[Local Aroma Layer]
[0076] In the present embodiment, the aroma layer 16 is provided
locally. In the present invention, "locally" does not mean the
entirety of the ball surface, but means part of the ball surface.
In the embodiment of FIG. 1, the aroma layer 16 is provided at four
locations. The aroma layer 16 is provided at one location or at two
or more locations. The arrangement of the aroma layer 16 is not
limited to a specific one. For the local aroma layer 16,
application of the aroma layer 16 can be easy.
[Entire Surface Aroma Layer]
[0077] The aroma layer 16 may be provided non-locally. In other
words, the aroma layer 16 may be provided entirely, that is, may
cover the entirety of the ball.
[0078] The aroma layer 16 may be not colored or may be colored. A
transparent aroma layer 16 is less obtrusive. In light of
appearance of the ball and the like, there are cases where it is
preferred if the aroma layer 16 is less obtrusive. For example,
when the aroma layer 16 is provided at a large number of locations,
there are cases where it is preferred if the aroma layer 16 is less
obtrusive. In such cases, a transparent aroma layer 16 is suitably
used. On the other hand, there are also cases where a colored aroma
layer 16 is preferred. The colored aroma layer 16 also can serve as
a so-called mark layer. In this case, a manufacturer name, a brand
name, a ball number, and the like are indicated by the aroma layer
16.
[Composition of Aroma Layer]
[0079] The aroma layer includes a scent component. The aroma layer
may consist of only a scent component. The aroma layer may consist
of only a scent component and a solvent. The aroma layer may
consist of only a scent component due to volatilization of a
solvent.
[0080] The aroma layer may include a resin component. A composition
of the aroma layer including the resin component can be, for
example, as follows.
(Composition 1) A composition obtained by adding a scent component
to a composition of a paint layer of a golf ball. (Composition 2) A
composition obtained by adding a scent component to a composition
of a mark layer of a golf ball. (Composition 3) A composition in
which, in the composition 1 or the composition 2, the scent
component is encapsulated in a release suppressing body
(microcapsule, or the like). (Composition 4) A composition obtained
by adding the above photoluminescent particle to the composition 1,
the composition 2, or the composition 3. (Composition 5) A
composition obtained by excluding a pigment from the composition
2.
[0081] In the embodiment of FIG. 1, the composition 5 is used.
[0082] In the composition 1, any known composition can be used as
the composition of the paint layer of the golf ball, and, for
example, any composition described above regarding the paint layer
14 also can be used. The paint layer is formed by application of a
paint. As an application method for the paint layer, electrostatic
coating, spray gun coating, brushing, or the like can be used.
Examples of a base resin of the paint include polyurethanes, epoxy
resins, polyesters, acrylic resins, and cellulose resins. In light
of durability of the paint layer, two-component curing type
polyurethanes are preferred.
[0083] Two-component curing type polyurethanes are obtained by a
reaction of a base material and a curing agent. Two-component
curing type polyurethanes obtained by a reaction of: a base
material containing a polyol component; and a curing agent
containing a polyisocyanate (including a polyisocyanate
derivative), are preferred.
[0084] As the polyol component of the base material, a urethane
polyol is preferably used. The urethane polyol has a urethane bond
and at least two or more hydroxyl groups. Preferably, the urethane
polyol has hydroxyl groups at its ends. The urethane polyol can be
obtained by causing a reaction of a polyol and a polyisocyanate at
such a ratio that the hydroxyl groups of the polyol component are
excessive in mole ratio with respect to the isocyanate groups of
the polyisocyanate.
[0085] The polyol used for producing the urethane polyol has a
plurality of hydroxyl groups. Polyols having a weight average
molecular weight of 50 or greater and 2000 or less, particularly
100 or greater and 1000 or less, are preferred. Examples of
low-molecular-weight polyols include diols and triols. Specific
examples of diols include ethylene glycol, diethylene glycol,
triethylene glycol, 1,3-butanediol, 1,4-butanediol, neopentyl
glycol, and 1,6-hexanediol. Specific examples of triols include
glycerin, trimethylol propane, and hexanetriol. Examples of
high-molecular-weight polyols include polyether polyols such as
polyoxyethylene glycol (PEG), polyoxypropylene glycol (PPG), and
polyoxytetramethylene glycol (PTMG); condensed polyester polyols
such as polyethylene adipate (PEA), polybutylene adipate (PBA), and
polyhexamethylene adipate (PHMA); lactone polyester polyols such as
poly-.epsilon.-caprolactone (PCL); polycarbonate polyols such as
polyhexamethylene carbonate; and acrylic polyols. Two or more of
these polyols may be used in combination.
[0086] The polyisocyanate used for producing the urethane polyol
has a plurality of isocyanate groups. Specific examples of the
polyisocyanate include aromatic polyisocyanates such as 2,4-toluene
diisocyanate, 2,6-toluene diisocyanate, a mixture of 2,4-toluene
diisocyanate and 2,6-toluene diisocyanate (TDI),
4,4'-diphenylmethane diisocyanate (MDI), 1,5-naphthylene
diisocyanate (NDI), 3,3'-bitolylene-4,4'-diisocyanate (TODI),
xylylene diisocyanate (XDI), tetramethylxylylene diisocyanate
(TMXDI), and paraphenylene diisocyanate (PPDI); alicyclic
polyisocyanates such as 4-4'-dicyclohexylmethane diisocyanate
(H.sub.12MDI), hydrogenated xylylene diisocyanate (H.sub.6XDI), and
isophorone diisocyanate (IPDI); and aliphatic polyisocyanates such
as hexamethylene diisocyanate (HDI). Two or more of these
polyisocyanates may be used in combination. In light of weather
resistance, TMXDI, XDI, HDI, H.sub.6XDI, IPDI, and H.sub.12MDI are
preferred.
[0087] In the reaction of the polyol and the polyisocyanate for
producing the urethane polyol, a known catalyst can be used. A
typical catalyst is dibutyl tin dilaurate.
[0088] The proportion of urethane bonds included in the urethane
polyol is preferably equal to or greater than 0.1 mmol/g and equal
to or less than 5 mmol/g. An urethane polyol in which this
proportion is equal to or greater than 0.1 mmol/g can achieve
excellent scuff resistance of the paint layer. An urethane polyol
in which this proportion is equal to or less than 5 mmol/g can
achieve excellent followability of the paint layer to the cover 8.
In a paint layer having excellent followability, a crack is
unlikely to occur when the golf ball 2 is repeatedly hit. By
adjusting the molecular weight of the polyol, which is the material
for the urethane polyol, the proportion of the urethane bonds can
be set in the above range. By adjusting the blending ratio of the
polyol and the polyisocyanate as well, the proportion of the
urethane bonds can be set in the above range.
[0089] From the standpoint that a time taken for the reaction of
the base material and the curing agent is short, the weight average
molecular weight of the urethane polyol is preferably equal to or
greater than 4000, and more preferably equal to or greater than
4500. In light of adhesion of the paint layer to the cover 8, the
weight average molecular weight is preferably equal to or less than
10000, and more preferably equal to or less than 9000.
[0090] In the composition 2 or the composition 5, any known
composition can be used as the composition of the mark layer of the
golf ball. The mark layer is formed, for example, from an ink
composition. The ink composition includes a base resin and a
pigment. Specific examples of he hose resin include epoxy resins,
polyester polyols, polyether polyols, polyurethane polyols, and
nitrocellulose.
[0091] As described above, the aroma layer may be transparent. A
composition for obtaining a transparent aroma layer is, for
example, the composition 5.
[Scent Component (Perfume Material)]
[0092] The scent component is not limited to a specific one.
Examples of preferable scent components include at least one member
selected from the group consisting of terpenes, ester compounds,
aromatic compounds, ether compounds, aldehyde compounds, alcohol
compounds, ketone compounds, natural essential oils, hydrocarbons,
lactone compounds, and nitrogen-containing compounds. A mixture of
two or more of them may be used.
[0093] The scent component can provide, for example, an
exhilarating feel or a refreshing feel. Examples of scents which
can provide an exhilarating feel or a refreshing feel include a
scent of mint (peppermint) and scents of spices (herbs). These
scents can have an effect of refreshing a player and increasing the
player's concentration. Examples of scent components which provide
an exhilarating feel or a refreshing feel include limonene
(terpenes: scents of citrus fruits), menthol (an alcohol compound:
a scent of mint), menthone (a ketone compound: a scent of mint),
terpineol (an alcohol compound: a scent of lime), citral (an
aldehyde compound: a scent of lemon), camphor (a ketone compound: a
scent of mint), anethole (an ether compound: scents of fennel and
the like), estragole (an ether compound: a scent of estragon),
1,8-cineol (an ether compound: scents of eucalyptus, sage, and
laurel), eugenol (an alcohol compound: scents of clove, pimento,
and the like), cummin aldehyde (an aldehyde compound: a scent of
cummin), cinnamyl aldehyde (an aldehyde compound: a scent of
cinnamon), and a natural essential oil having a scent of pepper
mint.
[0094] In addition, the scent component can provide, for example, a
comforting feel. Examples of scents which provide a comforting feel
include scents of fruits and scents of flowers. These scents can
have an effect of calming one's feeling when feeling excited or
pressed. Examples of scent components which provide a comforting
feel include cucumber alcohol (an alcohol compound: scents of melon
and watermelon), aldehyde C-8 (an aldehyde compound: a scent of
orange), cucumber aldehyde (an aldehyde compound: scents of melon
and watermelon), vanillin (an aldehyde compound: a scent of
vanilla), nootkatone (a ketone compound: a scent of grapefruit),
raspberry ketone (a ketone compound: a scent of raspberry), ethyl
caprate (an ester compound: scents of rum and brandy), allyl
caproate (an ester compound: a scent of pineapple), isoamyl acetate
(an ester compound: a scent of banana), ethyl acetate (an ester
compound: scents of melon and grape), styrallyl acetate (an ester
compound: a scent of grapefruit), hexyl acetate (an ester compound:
scents of apple and pear), ethyl butyrate (an ester compound: a
scent of pineapple), coconut aldehyde (a lactone compound: a scent
of coconut), peach aldehyde (a lactone compound: a scent of peach),
methyl anthranilate (a nitrogen-containing compound: a scent of
grape), rose oxide (an ether compound: a scent of rose), geraniol
(an alcohol compound: a scent of geranium), linalool (an alcohol
compound: a scent of lavender), .beta.-phenethyl alcohol (an
alcohol compound: a scent of rose), cyclamen aldehyde (an aldehyde
compound: a scent of lily of the valley), .alpha.-ionone (a ketone
compound: a scent of violet), cis-jasmone (a ketone compound: a
scent of jasmine), benzyl acetate (an ester compound: a scent of
jasmine), and furaneol (a ketone compound: a scent of
strawberry).
[Release of Scent Component by Stimulation]
[0095] The above aroma layer 16 can release the above scent
component by stimulation. The stimulation causes a change such that
the scent component can be released. For example, the stimulation
changes in quality and/or breaks a substance which suppresses
release of the scent component, thereby allowing release of the
scent component. In the present invention, the substance which
suppresses release of the scent component is also referred to as a
release suppressing body.
[0096] The release suppressing body suppresses release of the scent
component until being stimulated. Due to the suppression, diffusion
of the scent component is suppressed until the ball is used. Thus,
when the ball is used, a large amount of the scent component is
released.
[Stimulation]
[0097] The stimulation is not limited to a specific one. Examples
of the stimulation include physical stimulation and chemical
stimulation. An example of physical stimulation is force (external
force). Examples of the force include pressing force, impact force,
and frictional force. Examples of chemical stimulation include
light such as ultraviolet light, and heat.
[0098] Ultraviolet light as stimulation is included, for example,
in sunlight or artificial light (light of a fluorescent lamp and
the like). For example, by exposing a ball to sunlight, ultraviolet
light is applied to a ball surface. Thus, a ball being used in
playing golf on a golf course is radiated with ultraviolet light.
The ultraviolet light can change in quality the release suppressing
body. The ultraviolet light can prompt release of the scent
component.
[0099] A frictional force as stimulation occurs, for example, by
rubbing a ball surface with a finger. The release suppressing body
can be broken by this friction. This friction can prompt release of
the scent component.
[0100] Heat as stimulation is emitted, for example, from a human
body. When a ball is touched by a hand, the heat of the hand is
transmitted to the ball. The release suppressing body can be
changed in quality and/or broken by this heat. Another example of
heat as stimulation is infrared light. Infrared light is included
in sunlight or the like.
[0101] An impact force as stimulation occurs, for example, by a hit
with a golf club. The release suppressing body can be broken by
this hit.
[Microcapsule]
[0102] What is changed in quality and/or broken by the stimulation
is, for example, a microcapsule. The microcapsule is one example of
the above release suppressing body. The microcapsule encapsulates
the scent component.
[0103] The material (film material) of the microcapsule is not
limited to a specific one, and is, for example, at least one member
selected from the group consisting of melamine resins, polyurethane
resins, gelatin, and urea-formalin resins. In light of balance
between breakage by the stimulation and scent component retention,
melamine resins are preferred.
[0104] In light of suppression of release of the scent component,
the material of the microcapsule is preferably a resin having a
melting point of 110.degree. C. or higher, more preferably a resin
having a melting point of 120.degree. C. or higher, and even more
preferably a resin having a melting point of 130.degree. C. or
higher. In this case, even when a golf ball is left in a trunk in
summer, the microcapsule does not melt, and release of the scent
component can be suppressed.
[0105] The melting point of the material of the microcapsule can be
measured, for example, by using the differential scanning
calorimeter, model 2910, manufactured by TA instruments Japan.
[0106] The amount of the perfume-material-encapsulating
microcapsule in the aroma layer is preferably equal to or greater
than 0.3 parts by weight, more preferably equal to or greater than
0.5 parts by weight, even more preferably equal to or greater than
0.6 parts by weight, and much more preferably equal to or greater
than 3 parts by weight, with respect to 100 parts by weight of the
resin solid component constituting the paint film. The amount is
preferably equal to or less than 20 parts by weight, more
preferably equal to or less than 18 parts by weight, and even more
preferably equal to or less than 10 parts by weight, with respect
to 100 parts by weight of the resin solid component constituting
the paint film. When the amount of the
perfume-material-encapsulating microcapsule is less than 0.5 parts
by weight, the effective component of the perfume material is
insufficient, and the scent may not be able to last for a long
period of time. On the other hand, when the amount of the
perfume-material-encapsulating microcapsule exceeds 20 parts by
weight, the paint film embrittles and its adhesion to the golf ball
body may be lowered.
[0107] The number average particle diameter of the
perfume-material-encapsulating microcapsule is equal to or less
than 30 .mu.m, more preferably equal to or less than 20 .mu.m, and
even more preferably equal to or less than 10 .mu.m. When the
number average particle diameter exceeds 30 .mu.m, a spray gun for
application may be clogged.
[0108] The number average particle diameter can be measured by the
light scattering type particle size analyzer LA-910 manufactured by
HORIBA, Ltd.
[0109] A specific example of the microcapsule is Capsule Cologne
powder manufactured by Chemitech Inc.
[0110] When the scent component is encapsulated in the
microcapsule, release of the scent component is suppressed. In
addition, during use, the microcapsule can be changed in quality
and/or broken by stimulation. In the golf ball of the present
invention, the scent can last for a long period of time.
[Package]
[0111] Preferably, the golf ball 2 according to the present
invention is put into a package. The package suppresses diffusion
of the scent component after shipment until use. The package can
improve the persistence of the scent.
[0112] The package is preferably a package which can prevent or
suppress the above stimulation. In this case, until the ball is
taken out of the package, the stimulation is prevented or
suppressed, and the persistence of the scent can improve. For
example, when the stimulation is ultraviolet light, a package which
does not substantially allow ultraviolet light to pass
therethrough, is preferred. "Not substantially allowing ultraviolet
light to pass therethrough" means that a transmission rate of light
having a wavelength of 365 nm is less than 1%. The ultraviolet
light transmission rate can be measured by the spectrophotometer
MPC-3100 manufactured by Shimadzu Corporation.
[0113] The above scent component may be contained in the package.
In this case, until the ball is taken out of the package, the scent
component and the ball are present together in the package. Thus,
until the ball is taken out of the package, the scent component is
likely to be adsorbed on the ball surface.
[0114] The package preferably has airtightness. The airtightness
suppresses leak of the scent component. The airtightness can
increase the amount of the scent component adsorbed on the ball
surface. The airtightness can increase the persistence of the scent
component.
[0115] The structure of a sheet constituting a package 20 is
preferably a multiple layer structure. The multiple layers include,
for example, a resin layer, a metal layer, and a colored layer. A
preferable resin layer is a polyethylene layer. One example of a
preferable sheet structure includes a polyethylene layer, a metal
layer, and a. colored layer. The colored layer is an outermost
layer. A preferable colored layer has a color related to the scent
of the above scent component. The metal layer can effectively
suppress entry of light such as ultraviolet light. A metal of the
metal layer is, for example, an aluminum-based metal (aluminum or
an aluminum alloy). The metal layer may be foil, or may be formed
by vapor deposition. The polyethylene layer has excellent
airtightness. The polyethylene layer effectively suppresses leak of
the scent component. In light of retention of the scent component,
a particularly preferable sheet structure is a three-layer
structure including a polyethylene resin layer, a polyethylene
terephthalate resin layer, and an aluminum-based metal layer, which
are positioned in this order from the inside.
[0116] FIG. 2 is a view of a golf ball packaged body P1 in which
golf balls 2 are contained in the package 20 which can be used in
the present invention. FIG. 3 is a perspective view of the package
20.
[0117] As shown in FIG. 2, the golf ball packaged body P1 includes
the package 20 and the golf balls 2. In the present embodiment, a
plurality (three) of the golf balls 2 are contained in the package
20. In the golf ball packaged body P1, the number of the golf balls
2 is not limited to a specific number.
[0118] Although not shown, a manufacturer name, a brand name, and
the like are indicated on the surface of the package 20. In
addition, at least a part of the surface of the package 20 has a
color related to the scent of the above scent component.
[0119] As shown in FIG. 3, the package 20 has an opening portion
22, a body 24, and a bottom sheet 26. Except the opening portion
22, the edge of the package 20 is sealed.
[0120] The opening portion 22 can be opened/closed. The open/close
mechanism is a so-called zipper. The zipper has a female zipper
claw and a male zipper claw. Although not shown, the female zipper
claw is two projections arranged so as to be parallel to each
other. The two projections are straight. The male zipper claw is
one projection. This projection is straight. The male zipper claw
is fitted between the two female zipper claws. This fitting is
achieved, for example, by compression with fingers. By the
engagement of the female zipper claws and the male zipper claw, the
opening portion 22 is closed. By the opening portion 22 being
closed, sealing is achieved. By this sealing, leak of the scent
component is suppressed. The package 20 has airtightness.
[0121] By releasing the engagement of the female zipper claws and
the male zipper claw, the opening portion 22 is opened. When the
golf ball 2 is taken out, the opening portion 22 is opened.
[0122] The bottom sheet 26 is a gusset. By the bottom sheet 26, the
internal volume of the package 20 is expanded. Due to the expansion
of the internal volume, the golf balls 2 can be easily
accommodated. In addition, due to the bottom sheet 26, the package
20 has a shape in which a cross section on the lower side is larger
than a cross section on the upper side. Due to this shape, the
package 20 can stand on its own (see FIG. 3).
[0123] As shown in FIG. 3, in a state where the golf balls 2 are
contained in the package 20, the bottom sheet 26 is developed, and
thus the package 20 stably stands on its own. In a state of
standing on its own, the golf ball packaged body P1 can be arranged
at a store. In addition, the bottom sheet 26 can be folded. When
the bottom sheet 26 is folded, the package 20 can be changed into a
sheet shape as a whole. After the golf balls 2 are taken out, the
package 20 can be folded into a small piece.
[0124] Inside the package 20, there is a space kl together with the
golf balls 2 (see FIG. 2). In the space k1, a scent component is
present. In the package 20, the scent component is enclosed. The
scent component in the space k1 can be adsorbed on the surfaces of
the golf balls 2. Preferably, the scent component in the space k1
and the scent component included in the golf ball 2 are the
same.
[Scent Adsorbent]
[0125] The golf ball of the present invention may have a scent
adsorbent. The scent adsorbent is not limited to a specific one, as
long as it can adsorb the above scent component. A preferable golf
ball has a scent adsorbent and a scent component adsorbed on the
scent adsorbent. The scent component adsorbed on the scent
adsorbent can be released gradually. The scent adsorbent can
contribute to the persistence of the scent. The scent adsorbent may
be included in the above aroma layer. In this case, the aroma layer
also serves as a later-described aroma retaining layer.
[0126] In the package, a scent adsorbent may be present. For
example, the package may have a scent adsorbent. To the inner
surface of the package, the scent adsorbent may be attached.
Alternatively, a scent adsorbent which is not attached to the
package may be contained in the package together with the balls.
For example, a scent adsorbent may be put into a breathable bag,
and the bag may be put into the package. The scent component
adsorbed on the scent adsorbent in the package has high
persistence. In addition, the scent component adsorbed on the scent
adsorbent in the package can move to the ball. The scent adsorbent
in the package can contribute to the persistence of the scent of
the ball.
[0127] The mode of adsorption is not limited to a specific one.
Adsorption may be physical adsorption by van der Waals force, and
may be chemical adsorption. In light of release of the scent
component, physical adsorption is preferred.
[0128] A preferable scent adsorbent is a porous body. The porous
body has a large surface area with respect to its volume. The
porous body has excellent adsorption of the scent component.
[0129] Examples of the porous body include activated carbon,
activated carbon fiber, activated alumina, diatom earth, kaolin,
calcium silicate, activated clay, silica gel, natural zeolite,
synthetic zeolite, vermiculite, mesoporous silica, sepiolite,
palygorskite, and felt.
[0130] Further, the scent adsorbent may be a polar adsorbent such
as silica or alumina, or may be a nonpolar adsorbent such as
activated carbon. The polar adsorbent adsorbs a polar scent
component. The nonpolar adsorbent adsorbs a nonpolar scent
component.
[0131] A commercially-available synthetic adsorbent can be also
used as the scent adsorbent. Examples of the synthetic adsorbent
include adsorbents in which styrene-divinylbenzene, modified
styrene-divinylbenzene, or methyl methacrylate is a base.
[0132] The adsorption of the scent component onto the scent
adsorbent may be performed during a ball manufacturing process.
Alternatively, inside the package 20, the scent component may be
adsorbed on the scent adsorbent. In this case, the golf ball 2
having the scent adsorbent is put into the package 20, and the
scent component is also caused to be present in the space k1 inside
the package 20. While being in the package 20, the scent component
is adsorbed on the scent adsorbent.
[0133] The package may have a scent adsorbent. Preferably, the
scent adsorbent is located inside the package. Preferably, the
scent adsorbent is exposed inside the package. By this scent
adsorbent, leak of the scent in the package to the outside is
suppressed. This scent adsorbent can contribute to retention of the
scent. Both the ball and the package may have scent adsorbents.
[0134] Immediately before shipment of the golf balls 2, the golf
ball packaged body P1 is produced. During production of the golf
ball packaged body P1, the scent component can be put into the
package 20 together with the golf balls 2, and the package 20 can
be sealed. The scent component is put into the package 20 by a
means such as a spray. Until the golf ball packaged body P1 is
opened by a consumer (golf player), the scent component can be
adsorbed on the scent adsorbent.
[0135] By spraying, on a ball, a liquid including the scent
component, the scent component may be adsorbed on the scent
adsorbent. By immersing a ball in the liquid including the scent
component, the scent component may be adsorbed on the scent
adsorbent. The liquid including the scent component includes, for
example, a solvent and the scent component. The solvent is
preferably an organic solvent, more preferably an alcohol, and even
more preferably ethanol.
[Aroma Retaining Layer]
[0136] The aroma retaining layer is a layer including a scent
adsorbent. The aroma retaining layer may be provided independently
of the above aroma layer. Alternatively, the aroma retaining layer
may serve as an aroma layer. When a scent adsorbent is included in
the above aroma layer, the aroma retaining layer serves as an aroma
layer.
[0137] The aroma retaining layer is provided such that the scent
component adsorbed on the scent adsorbent is released to the
outside. In light of release of the scent component, the aroma
retaining layer is preferably an outermost layer. However, the
aroma retaining layer is not limited to the outermost layer. The
aroma retaining layer which is not an outmost layer may contribute
to the persistence of the scent.
[0138] The aroma retaining layer is preferably provided so as to
adsorb a scent included in the outside air. In this case, as
described above, the aroma retaining layer can adsorb the scent
component inside the package 20.
[0139] The aroma retaining layer is preferably provided locally.
The local aroma retaining layer can reduce time and effort for
application and the like, as compared with the aroma retaining
layer being provided on the entirety of the surface of the ball.
Preferably, the local aroma retaining layer is applied to the ball
surface by stamping. Examples of methods of stamping include pad
printing and stamp printing. As another method of applying the
local aroma retaining layer, ink jet printing, transfer film
printing, brushing, and the like can be used. In light of
productivity, pad printing is preferred.
[0140] Preferably, the local aroma retaining layer is applied after
curing and drying of the paint layer are completed. The ball after
curing and drying is easily handled. Application of the local aroma
retaining layer to the ball after curing and drying can contribute
to the productivity.
[0141] Note that the aroma retaining layer may be provided
non-locally. In other words, the aroma retaining layer may be
provided in the entirety of the surface layer area of the ball.
[Composition of Aroma Retaining Layer]
[0142] A composition of the aroma retaining layer preferably
includes a resin component and a scent adsorbent. The composition
of the aroma retaining layer can be, for example, as follows.
(Composition-a) A composition obtained by adding the above scent
adsorbent to a composition of a paint layer of a golf ball.
(Composition-b) A composition obtained by adding the above scent
adsorbent to a composition of a mark layer of a golf ball.
(Composition-c) A composition obtained by adding the above
photoluminescent particle to the composition-a or the
composition-b. (composition-d) A composition obtained by excluding
a pigment from the composition-b.
[0143] In the composition-a, any known composition can be used as
the composition of the paint layer of the golf ball, and, for
example, any composition described above regarding the paint layer
14 can be also used. The composition of the paint layer is the same
as the composition 1.
[0144] In the composition-b or the composition-d, any known
composition can be used as the composition of the mark layer of the
golf ball. The composition of the mark layer is the same as the
composition 2 or the composition 5.
[0145] The aroma retaining layer may be transparent. A composition
for obtaining the transparent aroma retaining layer is, for
example, the composition-d.
[Method of Forming Aroma Layer]
[0146] Examples of methods of forming the aroma layer include
immersion, spraying, and stamping.
[0147] The immersion is to immerse a ball in a liquid including a
scent component. The immersion is particularly suitable for forming
the entire surface aroma layer. The spraying facilitates the
application operation. The spraying is suitable for forming the
entire surface aroma layer, and is also suitable for forming the
local aroma layer. The stamping is suitable for forming the local
aroma layer.
[0148] Preferably, the spraying is conducted after curing and
drying of the paint layer 14 are completed. The ball after curing
and drying is easily handled. For example, immediately before
shipment of balls, spraying can be conducted into a package
simultaneously with packaging. The spraying can form an aroma layer
on the surface of a ball. In addition, by the spraying, a scent
component can be present inside the package. Application of the
local aroma layer to the ball after curing and drying can
contribute to improvement of the productivity.
[0149] The local aroma layer can reduce time and effort for
application and the like as compared with the entire surface aroma
layer. Preferably, the local aroma layer is applied to the ball
surface by stamping. Examples of methods of stamping include pad
printing and stamp printing. As another method of applying the
local aroma layer, ink jet printing, transfer film printing,
brushing, and the like can be used. In light of productivity, pad
printing is preferred.
[0150] Preferably, the local aroma layer 16 is applied after curing
and drying of the paint layer 14 are completed. The ball after
curing and drying is easily handled. Application of the local aroma
layer to the ball after curing and drying can contribute to
improvement of the productivity.
[Liquid (A)]
[0151] A liquid (A) is a liquid including a scent component. The
liquid (A) is used for forming the entire surface aroma layer. The
liquid (A) may be diluted with a solvent. The solvent is preferably
an organic solvent, more preferably an alcohol, and even more
preferably ethanol. The liquid (A) may consist of only a scent
component. A more preferable liquid (A) consists of only a scent
component, or consists of only a scent component and a solvent.
[Content Ra]
[0152] In light of intensity of the scent and persistence of the
scent, the content Ra of the scent component in the liquid (A) is
preferably equal to or greater than 10% by weight, and more
preferably equal to or greater than 20% by weight. In light of
intensity of the scent and persistence of the scent, the content Ra
is preferably equal to or less than 100% by weight. The content Ra
is a proportion of the weight of the scent component to the total
weight of the liquid (A).
[Liquid (B)]
[0153] A liquid (B) is a liquid including a scent component and a
solvent. The liquid (B) is used for forming the local aroma layer.
The solvent is preferably an organic solvent, more preferably an
alcohol, and even more preferably ethanol. A more preferable liquid
(B) consists of only a scent component and a solvent.
[Content Rb]
[0154] In light of intensity of the scent and persistence of the
scent, the content Rb of the scent component in the liquid (B) is
preferably equal to or greater than 5% by weight, and more
preferably equal to or greater than 10% by weight. In light of
suitability to a process of forming the local aroma layer (stamping
or the like), the content Rb is preferably equal to or less than
30% by weight, and more preferably equal to or less than 20% by
weight. The content Rb is a proportion of the weight of the scent
component to the total weight of the liquid (B).
[Composition (C)]
[0155] A composition (C) includes a perfume-material-encapsulating
microcapsule. The composition (C) is used for forming an aroma
layer including a perfume-material-encapsulating microcapsule. A
preferable composition (C) includes a solvent. The solvent is
preferably an organic solvent, more preferably an alcohol, and even
more preferably ethanol. A more preferable composition (C) consists
of only a scent component and a solvent. This composition (C) may
further include a resin component.
[Content Rc]
[0156] In light of intensity of the scent and persistence of the
scent, the content Rc of the perfume-material-encapsulating
microcapsule in the composition (C) is preferably equal to or
greater than 0.3% by weight, and more preferably equal to or
greater than 0.5% by weight. In light of suitability to the process
of forming the local aroma layer (stamping or the like), the
content Rc is preferably equal to or less than 10% by weight, and
more preferably equal to or less than 9% by weight. The content Rc
is a proportion of the weight of the perfume-material-encapsulating
microcapsule to the total weight of the composition (C).
[Coating amount Applied by Spraying per Ball (mg)]
[0157] In light of intensity of the scent and persistence of the
scent, the weight (coating amount) of the scent component applied
by spraying per ball is preferably equal to or greater than 10 mg,
and more preferably equal to or greater than 20 mg. In light of
using a spray liquid suitable for spraying, the weight (coating
amount) of the scent component per ball is preferably equal to or
less than 100 mg, and more preferably equal to or less than 80
mg.
[Color of Ball]
[0158] In the present invention, the color of the ball is not
limited to a specific color. The color of the ball may be white, or
may be a color other than white. When the scent of the scent
component and the color of the ball are related to each other, the
color of the ball is preferably a color other than white.
[Relation of Scent Component and Color]
[0159] In a preferable golf ball, the scent of the scent component
and the color of the ball are related to each other. In other
words, the color of a thing associable with the scent of the scent
component, and the color of the ball, are caused to be the same
type of color. Further, preferably, the color of at least a part of
the surface of the package 20, and the color of the thing
associable with the scent of the scent component, are caused to be
the same type of color.
[0160] Specific examples where the scent component and the color
are related to each other are, for example, as follows.
[0161] The scent of the scent component is a scent of mint, and the
color is a blue type color or a green type color.
[0162] The scent of the scent component is a scent of lavender, and
the color is a purple type color.
[0163] The scent of the scent component is a scent of grapefruit,
and the color is a yellow type color.
[0164] The scent of the scent component is a scent of orange, and
the color is an orange type color.
[0165] The scent of the scent component is a scent of rose, and the
color is a pink type color, a blue type color, or a red type
color.
[0166] The scent of the scent component is a scent of strawberry,
and the color is a pink type color or a red type color.
[0167] The scent of the scent component is a scent of vanilla, and
the color is a white type color.
[0168] The scent of the scent component is a scent of lemon, and
the color is a yellow type color.
[0169] The scent of the scent component is a scent of banana, and
the color is a yellow type color.
[0170] The scent of the scent component is a scent of lime, and the
color is a green type color.
[0171] The scent of the scent component is a scent of eucalyptus,
sage, or laurel, and the color is a green type color.
[0172] The scent of the scent component is a scent of cinnamon, and
the color is a brown type color.
[0173] The scent of the scent component is a scent of melon, and
the color is a green type color or an orange type color.
[0174] The scent of the scent component is a scent of watermelon,
and the color is a green type color or a red type color.
[0175] The scent of the scent component is a scent of pineapple,
and the color is a yellow type color.
[0176] The scent of the scent component is a scent of peach, and
the color is a pink type color.
[0177] The scent of the scent component is a scent of grape, and
the color is a purple type color.
[0178] Regarding color, in later-described Examples and the like,
indexes L*, a*, and b* in the CIELAB color system are measured.
[0179] The indexes L*, a*, and b* are calculated by the following
equations.
L*=116(Y/Yn).sup.1/3-16
a*=500((X/Xn).sup.1/3-(Y/Yn).sup.1/3)
b*=200((Y/Yn).sup.1/3-(Z/Zn).sup.1/3)
[0180] In these equations, X, Y, and Z are tristimulus values in an
XYZ color system, and Xn, Yn, and Zn are tristimulus values of a
perfect reflecting diffuser. The CIELAB color system is a standard
specified by the International Commission on Illumination (CIE) in
1976. In Japan, the CIELAB color system is used in "JIS Z
8729".
[0181] L* is an index for lightness. a* and b* are indexes related
to hue and saturation. For a*, a negative value indicates green,
and a positive value indicates red. For b*, a negative value
indicates blue, and a positive value indicates yellow. A saturation
S is calculated by the following equation.
S=((a*).sup.2+(b*).sup.2).sup.1/2
[0182] The indexes L*, a*, and b* are measured by using the
spectrophotometer "CM-3500d" manufactured by Konica Minolta
Sensing, Inc. A light receiver is applied to the surface of the
golf ball 2 or the package 20 to conduct measurement. As a light
source, "a standard light D.sub.65" is used. The color temperature
of the light source is 6504 k. As a spectral sensitivity, "a view
angle of 2.degree." is used. When the color of the surface of the
golf ball 2 is measured, the light receiver is applied to the land
12. When the color of the surface of the package 20 is measured,
the back surface of the sheet of the package 20 is supported by a
plate, and the light receiver is applied to the sheet in a state
where the sheet is flattened.
EXAMPLES
[0183] The following will show the effects of the present invention
by means of Examples, but the present invention should not be
construed in a limited manner based on the description of these
Examples.
Example 1
[0184] A rubber composition was obtained by kneading 100 parts by
weight of a polybutadiene (trade name "BR-730", manufactured by JSR
Corporation), 25 parts by weight of zinc diacrylate, 10 parts by
weight of zinc oxide, 6 parts by weight of titanium dioxide, 15
parts by weight of barium sulfate, 0.5 parts by weight of diphenyl
disulfide (manufactured by Sumitomo Seika Chemicals Co., Ltd.), and
0.8 parts by weight of dicumyl peroxide (manufactured by NOF
Corporation). This core composition is shown in Table 1 below. This
rubber composition was placed into a mold including upper and lower
mold halves each having a hemispherical cavity, and heated at
170.degree. C. for 20 minutes to obtain a core with a diameter of
38.9 mm.
[0185] A resin composition was obtained by kneading 45 parts by
weight of a sodium-neutralized ionomer resin (trade name "Surlyn
8945" manufactured by E.I. du Pont de Nemours and Company), 45
parts by weight of a zinc-neutralized ionomer resin (trade name
"Surlyn 9945" manufactured by E.I. du Pont de Nemours and Company),
10 parts by weight of a styrene block-containing thermoplastic
elastomer (trade name "Rabalon SR04" manufactured by Mitsubishi
Chemical Corporation), and pigments (2 parts by weight of titanium
dioxide and 0.6 parts by weight of a yellow pigment 1) with a
twin-screw kneading extruder. The above core was placed into a
final mold having numerous pimples on its inside face, followed by
injection of the above resin composition around the core by
injection molding. By this injection, a body having a cover with a
thickness of 1.9 mm was obtained. The cover is yellow. Numerous
dimples having a shape which was the inverted shape of the pimples
were formed on the cover. Polishing treatment was conducted on the
surface of the body. The composition of the cover is shown in the
"yellow" column in Table 2 below.
TABLE-US-00001 TABLE 1 Core Composition Parts by Compound Name
Weight Trade Name Polybutadiene rubber 100 BR730 manufactured by
JSR Corporation Zinc diacrylate 25 ZNDA-90S manufactured by Nihon
Jyoryu Kogyo CO., Ltd Zinc oxide 10 Ginrei R manufactured by Toho
Zinc Co., Ltd. Titanium dioxide 6 Barium sulfate 15 Barium Sulfate
BD manufactured by Sakai Chemical Industry Co., Ltd. Diphenyl
disulfide 0.5 manufactured by Sumitomo Seika Chemicals Co., Ltd.
Dicumyl peroxide 0.8 Percumyl D manufactured by NOF Corporation
TABLE-US-00002 TABLE 2 Cover Composition Cover color Light Blended
material White Purple blue Yellow Manufacturer, Trade Name Surlyn
8945 45 45 45 45 Ionomer resin manufactured by E.I. du Pont de
Nemours and Company Surlyn 9945 45 45 45 45 Ionomer resin
manufactured by E.I. du Pont de Nemours and Company Rabalon SR04 10
10 10 10 Thermoplastic elastomer manufactured by Mitsubishi
Chemical Corporation Titanium dioxide 3 2 2 Purple pigment 2 Purple
pigment mixture PE-D 09J699 Purple manufactured by Dainichiseika
Color & Chemicals Mfg. Co., Ltd. Blue pigment 0.1 Fluorescent
colorant ZQ-19 manufactured by DayGlo Color Corp. Yellow pigment 1
0.6 Yellow pigment mixture PE-D 07E502 Yellow manufactured by
Dainichiseika Color & Chemicals Mfg. Co., Ltd. L* 92.8 78.3
87.8 92.4 a* -1.8 13.2 -9.7 -9.9 b* -9.1 -21.2 -16.2 44.7 Paint
Clear Photoluminescent Photoluminescent Photoluminescent
[0186] A clear paint including a two-component curing type
polyurethane as a base material was prepared. The base material of
the paint is a mixture of a polyether polyol and a polyester
polyol. A curing agent of the paint is hexamethylene diisocyanate.
The paint includes a composite particle in which a core is formed
from a mica and a coating layer is formed from titanium oxide
(trade name "Iriodin 201" manufactured by Merck KGaA). The amount
of the composite particle is 10 parts by weight with respect to 100
parts by weight of the base resin. The composite particle is in the
form of flakes, and its particle size is 15 .mu.m. The paint was
applied to the cover by a spray gun. The paint was dried at a
temperature of 40.degree. C. for 120 minutes to obtain a paint
layer with a thickness of about 10 .mu.m.
[0187] In this golf ball, an aroma layer was applied at hatched
positions in FIG. 1 (four locations). The aroma layer was applied
by stamping (pad printing). A composition of a paint for forming
the aroma layer includes 100 parts by weight of a base resin, 19
parts by weight of a curing agent (hexamethylenediamine), 23 parts
by weight of acetylacetone, and 8 parts by weight of a
perfume-material-encapsulating microcapsule. The base resin was an
epoxy resin. The number average particle diameter of the
perfume-material-encapsulating microcapsule was 30 .mu.m. A scent
component included in the perfume-material-encapsulating
microcapsule is trade name "AR81731" manufactured by Ogawa &
Co., Ltd, and has a scent of grapefruit. The paint was dried at a
temperature of 40.degree. C. for 120 minutes to obtain an aroma
layer with a thickness of about 30 .mu.m. The aroma layer is
transparent. In this manner, a golf ball of Example 1 having a
diameter of 42.7 mm and a weight of about 45.4 g was obtained. The
golf ball is yellow. In Example 1, the scent of the scent component
and the color of the ball are related to each other.
[0188] Three of the golf balls were put into the above package
shown in FIGS. 2 and 3 and the package was sealed, to obtain
packaged golf balls of Example 1.
Example 2
[0189] Packaged golf balls of Example 2 were obtained in a same
manner as Example 1, except 10 parts by weight of a liquid (B) was
blended instead of the above perfume-material-encapsulating
microcapsule. The liquid (B) was obtained by diluting 50 parts by
weight of the above scent component ("AR81731") with 50 parts by
weight of a solvent (ethanol).
Example 3
[0190] Instead of forming the aroma layer by stamping, a spray
liquid including the above scent component (a scent of grapefruit)
was sprayed to form an entire surface aroma layer. The method of
the spraying is a spraying method C in Table 3. The spraying was
conducted after curing of the paint layer. Packaged golf balls of
Example 3 were obtained in a same manner as Example 1, except the
above.
Example 4
[0191] As a package, a box formed from paper, which was a general
and conventional package, was used instead of the above package
having airtightness. Packaged golf balls of Example 4 were obtained
in a same manner as Example 3, except the above.
Example 5
[0192] Processes were conducted in a same manner as Example 1,
until an aroma layer was formed by stamping. After curing of this
aroma layer which was a paint film, spraying was conducted. A spray
liquid including the above scent component (a scent of grapefruit)
was sprayed by the spraying method C (see Table 3), to form an
entire surface aroma layer. Packaged golf balls of Example 5 were
obtained in a same manner as Example 1, except the above.
Example 6
[0193] The pigments used for the cover were changed to 2 parts by
weight of titanium dioxide and 0.1 parts by weight of a blue
pigment (see Table 2). By these pigments, a cover having a blue
type color (light blue) was obtained. In addition, the scent
component in the microcapsule was changed to trade name "AR89263"
(a scent of peppermint) manufactured by Ogawa & Co., Ltd. After
an aroma layer applied by stamping was cured, spraying was
conducted. This spraying was conducted by a spraying method B in
Table 3 below, and trade name "AR89263" (a scent of peppermint)
manufactured by Ogawa & Co., Ltd. was used as a scent
component. Packaged golf balls of Example 6 were obtained in a same
manner as Example 5, except the above.
Example 7
[0194] A cover composition shown in "purple" in Table 2 was used,
and the scent component in the microcapsule was changed to trade
name "AR81732" (a scent of lavender) manufactured by Ogawa &
Co., Ltd. In addition, the spraying method was changed to a
spraying method A (see Table 3). Packaged golf balls of Example 7
were obtained in a same manner as Example 5, except the above.
Example 8
[0195] Packaged golf balls of Example 8 were obtained in a same
manner as Example 5, except a cover composition shown in "white" in
Table 2 was used and the composite particle in the clear paint was
excluded.
Example 9
[0196] Packaged golf balls of Example 9 were obtained in a same
manner as Example 5, except the package was changed to a package
which was the same as in Example 4 (a general box).
Example 10
[0197] Instead of the stamping in Example 5, stamping was conducted
in a same manner as Example 2. Packaged golf balls of Example 10
were obtained in a same manner as Example 5, except the above.
Example 11
[0198] Packaged golf balls of Example 11 were obtained in a same
manner as Example 10, except the package was changed to a package
which was the same as in Example 4 (a general box).
[0199] The specifications and the evaluation results of Examples 1
to 4 are shown in Table 4 below. The specifications and the
evaluation results of Examples 5 to 8 are shown in Table 5 below.
The specifications and the evaluation results of Examples 9 to 11
are shown in Table 6 below.
[Measurement of Indexes L*, a*, and b*]
[0200] Indexes L*, a*, and b* of a ball surface were measured by
the aforementioned method using the spectrophotometer "CM-3500d"
manufactured by Konica Minolta Sensing, Inc. The measurement was
conducted on the surface of a ball which was a finished product in
which a paint and a perfume material were added. The results are
shown in the above Table 2.
[Scent at Opening]
[0201] After packaging, a package was left for 30 days and opened,
and the scent was evaluated. The evaluation was categorized as
follows. The results are shown in Tables 4 to 6 below.
A: A scent was felt in a state where a ball was taken in one's
hand, without moving the ball close to the nose. B: A scent was
felt when a ball was moved to the nose. C: No scent was felt.
[Controllability of Scent Release]
[0202] Evaluation was categorized as follows. The results are shown
in Tables 4 to 6 below.
A: Control was possible. C: Control was impossible.
[Scent Persistence (1)]
[0203] A ball was taken out of a package by opening, and hit 50
times. Then, the scent was evaluated on the basis of the same
criterion as in "Scent at opening" described above. The results are
shown in Tables 4 to 6 below.
[Scent Persistence (2)]
[0204] A ball was taken out of a package by opening, and hit 50
times. Then, the ball was put into the package again, and the
package was left for 30 days. Then, the package was opened, and the
scent was evaluated on the basis of the same criterion as in "Scent
at opening" described above. The results are shown in Tables 4 to 6
below.
TABLE-US-00003 TABLE 3 Method of Spraying Content Rb of Coating
scent amount of Scent component in scent Scent component spray
liquid component Spraying Lavender AR81732 25% by 30 mg per ball
method A weight Spraying Peppermint AR89263 25% by 30 mg per ball
method B weight Spraying Grapefruit AR81731 100% by 60 mg per ball
method C weight
TABLE-US-00004 TABLE 4 Specifications and Evaluation Results of
Examples Locally Entirely Mode of aroma layer 1 2 3 4 Mode of
perfume Microcapsule Solvent dilution material Introduction of
Stamping Stamping scent Adsorbent (ball) None None Mode of perfume
Solvent dilution Solvent dilution material Introduction of Spraying
Spraying scent Container Airtight Airtight Airtight Conventional
container container container box Scent of aroma Grapefruit
Grapefruit Grapefruit Grapefruit layer Color of colored Yellow
Yellow Yellow Yellow layer Scent at opening B B A A Controllability
of A C C C scent release Scent persistence A B B B (1) Scent
persistence B C B C (2)
TABLE-US-00005 TABLE 5 Specifications and Evaluation Results of
Examples Locally + Entirely Mode of aroma layer 5 6 7 8 Mode of
perfume Microcapsule Microcapsule Microcapsule Microcapsule
material Introduction of scent Stamping Stamping Stamping Stamping
Adsorbent (ball) None None None None Mode of perfume Solvent
dilution Solvent dilution Solvent dilution Solvent dilution
material Introduction of scent Spraying Spraying Spraying Spraying
Container Airtight container Airtight container Airtight container
Airtight container Scent of aroma layer Grapefruit Peppermint
Lavender Grapefruit (locally + entirely) (locally + entirely)
(locally + entirely) (locally + entirely) Color of colored layer
Yellow Light blue Purple White Scent at opening A A A A
Controllability of A A A A scent release Scent persistence (1) A A
A A Scent persistence (2) A A A A
TABLE-US-00006 TABLE 6 Specifications and Evaluation Results of
Examples Locally + Entirely Mode of aroma layer 9 10 11 Mode of
perfume Microcapsule Solvent dilution Solvent dilution material
Introduction of scent Stamping Stamping Stamping Adsorbent (ball)
None None None Mode of perfume Solvent dilution Solvent dilution
Solvent dilution material Introduction of scent Spraying Spraying
Spraying Container Conventional box Airtight container Conventional
box Scent of aroma layer Grapefruit Grapefruit Grapefruit (locally
+ entirely) (locally + entirely) (locally + entirely) Color of
colored layer Yellow Yellow Yellow Scent at opening A A A
Controllability of A C C scent release Scent persistence (1) A B B
Scent persistence (2) C B C
[0205] As shown in the Tables, effects are different between
Examples. Advantages of the present invention are clear.
[0206] The method described above is applicable to any golf
ball.
[0207] The above description is merely for illustrative examples,
and various modifications can be made without departing from the
principles of the present invention.
* * * * *