U.S. patent application number 11/990921 was filed with the patent office on 2009-06-11 for skin care goods and production method thereof.
Invention is credited to Takahiro Hasui, Naomi Matsumoto, Masanobu Takeda.
Application Number | 20090145507 11/990921 |
Document ID | / |
Family ID | 37771630 |
Filed Date | 2009-06-11 |
United States Patent
Application |
20090145507 |
Kind Code |
A1 |
Takeda; Masanobu ; et
al. |
June 11, 2009 |
Skin Care Goods and Production Method Thereof
Abstract
An object of the present invention is to prove a skin care goods
that is low irritant to the skin and superior in wiping efficiency
of the dirt in the sulucus cutis and pores of the skin. Thus, the
present invention provides a skin care goods of a pile fabric, the
pile fabric comprising pile yarns of nanofibers of thermoplastic
polymer having a number-average monofilament fineness of
1.times.10.sup.-8 to 2.2.times.10.sup.-3 dtex and ground yarns.
Inventors: |
Takeda; Masanobu; (Shiga,
JP) ; Hasui; Takahiro; (Shiga, JP) ;
Matsumoto; Naomi; (Shiga, JP) |
Correspondence
Address: |
KUBOVCIK & KUBOVCIK
SUITE 1105, 1215 SOUTH CLARK STREET
ARLINGTON
VA
22202
US
|
Family ID: |
37771630 |
Appl. No.: |
11/990921 |
Filed: |
August 24, 2006 |
PCT Filed: |
August 24, 2006 |
PCT NO: |
PCT/JP2006/316584 |
371 Date: |
August 15, 2008 |
Current U.S.
Class: |
139/384R ;
139/391 |
Current CPC
Class: |
D03D 15/33 20210101;
D03D 27/00 20130101; D04B 21/04 20130101; D03D 15/47 20210101; D04B
1/04 20130101; A45D 2200/1018 20130101; D03D 1/0017 20130101; D10B
2331/02 20130101 |
Class at
Publication: |
139/384.R ;
139/391 |
International
Class: |
D03D 3/00 20060101
D03D003/00; D03D 27/00 20060101 D03D027/00 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 26, 2005 |
JP |
2005-245705 |
Claims
1. A skin care goods of a pile fabric, the pile fabric comprising
pile yarns of nanofibers of thermoplastic polymer having a
number-average monofilament fineness of 1.times.10.sup.-8 to
2.2.times.10.sup.-3 dtex and ground yarns.
2. The skin care goods according to claim 1, wherein said
thermoplastic polymer is nylon.
3. The skin care goods according to claim 1, wherein the
number-average monofilament fineness of said nanofibers is
4.times.10.sup.-4 dtex or less.
4. The skin care goods according to claim 1, wherein said pile yarn
is a bundle of nanofiber filaments.
5. The skin care goods according to claim 1, wherein the
monofilament fineness of said ground yarns is larger than
8.times.10.sup.-4 dtex.
6. The skin care goods according to claim 1, wherein the
monofilament fineness of said ground yarns is larger than
1.times.10.sup.-1 dtex.
7. The skin care goods according to claim 1, wherein the length of
the pile is in the range of 1 to 10 mm.
8. The skin care goods according to claim 1, wherein the length of
the pile is in the range of 2 to 5 mm.
9. The skin care goods according to claim 1, wherein the tips of
the pile filaments are cut.
10. The skin care goods according to claim 1, wherein said skin
care goods has a sheet shape and double faced pile.
11. The skin care goods according to claim 10, wherein said pile
fabrics with the single faced pile are laminated to each other.
12. A method of producing the skin care goods according to claim 1,
comprising a step of forming a nanofiber having a number-average
monofilament fineness of 1.times.10.sup.-8 to 2.2.times.10.sup.-3
dtex by treating a pile fabric having pile yarns of polymer alloy
fibers consisting of sea and island components with a liquid
dissolving the sea component but not dissolving the ground yarn.
Description
TECHNICAL FIELD
[0001] The present invention relates to a skin care goods utilizing
nanofiber. The term "skin care" used in the present invention is to
make the entire skin of the body clean and refreshed, and the "skin
care goods" is a goods generally used for that purpose.
BACKGROUND ART
[0002] It is very important to remove wastes such as cosmetics and
sebum effectively during face wash for preservation and promotion
of skin health and for prevention, for example, of acne and pimple.
However, it is quite difficult to remove the wastes present in the
depth of the wrinkles and pores of the skin simply by normal face
wash. In addition, although "waterproof cosmetic preparations" and
"waterproof sunscreens", which were developed along with the recent
progress of production technology, have advantages in durability
and effectiveness, they also have a problem in removal during face
wash and cleansing. There are many cleansing lotions developed for
removal of these cosmetic preparations, but it is still practically
difficult even now to remove the cosmetic preparations and sebum
stains in the pores even with an cleansing oil that is regarded
most effective in cleansing action. In addition, there are recently
in the market many cosmetic preparations that are applied not only
on the face but also on the entire body, especially on the legs and
the breast for attractiveness, and these products too have the same
problem.
[0003] On the other hand, generally known is use of a skin care
goods employing ultrafine fiber, for example partially during face
wash, as a means of increasing cleaning efficiency.
[0004] For example, a skin care goods employing an ultrafine fiber
having a fineness of 0.001 to 1 dtex is disclosed (e.g., Patent
Document 1).
[0005] However, the cleansing effect thereof is based on the fine
foams generated by a soap solution passing through the fine spaces
among the ultrafine fibers (see, e.g., Patent Document 1, paragraph
number 0020), and the goods is still insufficient in removing
highly persistent cosmetic preparation and others completely.
[0006] Also disclosed is a skin care goods that wipes off dirt and
old cuticle directly with an ultrafine fiber having a fineness of
0.001 to 1 dtex (e.g., Patent Documents 2 and 3). However, such a
method of wiping off dirt and old horny layer by rubbing the skin
directly with an ultrafine fiber having a fineness of 0.001 to 1
dtex imposes excessive stimulus and friction on the skin, causing
concern about possibly skin troubles such as chromatosis, cuticle
thickening, as well as frictional melanoderma in some cases.
[0007] As described above, there is still no skin care goods that
is low irritative to the skin and superior in wiping efficiency of
the dirt in the depth of the pores, and thus, there is an urgent
need currently for prompt development thereof.
[0008] Patent Document 1: Japanese Unexamined Patent Publication
No. 2004-332149
[0009] Patent Document 2: Japanese Unexamined Patent Publication
No. 2004-329628
[0010] Patent Document 3: Japanese Registered Utility Model No.
3100954
[0011] Patent Document 4: Japanese Unexamined Patent Publication
No. 2005-330637
SUMMARY OF THE INVENTION
Problems to be Solved by the Invention
[0012] An object of the present invention, which was made under the
circumstances above to solve the problems above in traditional
technology, is to prove a skin care goods that is low irritant to
the skin and superior in wiping efficiency of the dirt in the
sulcus cutis and pores of the skin.
Means to Solve the Problems
[0013] The present invention, which solved the problems above, has
the following aspects:
1. A skin care goods of a pile fabric, the pile fabric comprising
pile yarns of nanofibers of thermoplastic polymer having a
number-average monofilament fineness of 1.times.10.sup.-8 to
2.2.times.10.sup.-3 dtex and ground yarns. 2. The skin care goods
according to Aspect 1, wherein the thermoplastic polymer is nylon.
3. The skin care goods according to Aspect 1 or 2, wherein the
number-average monofilament fineness of the nanofiber is
4.times.10.sup.-4 dtex or less. 4. The skin care goods according to
any one of Aspects 1 to 3, wherein the pile yarn is a bundle of
nanofiber filaments. 5. The skin care goods according to any one of
Aspects 1 to 4, wherein the monofilament fineness of the ground
yarn is larger than 8.times.10.sup.-4 dtex. 6. The skin care goods
according to any one of aspects 1 to 5, wherein the monofilament
fineness of the ground yarn is larger than 1.times.10.sup.-1 dtex.
7. The skin care goods according to any one of Aspects 1 to 6,
wherein the length of the pile is in the range of 1 to 10 mm. 8.
The skin care goods according to any one of Aspects 1 to 7, wherein
the length of the pile is in the range of 2 to 5 mm. 9. The skin
care goods according to any one of Claims 1 to 8, wherein the tips
of the pile filaments are cut. 10. The skin care goods according to
any one of Aspects 1 to 9, wherein the skin care goods has a sheet
shape and the double faced piles. 11. The skin care goods according
to Aspect 10, wherein the pile fabrics with the single faced piles
are laminated to each other. 12. A method of producing the skin
care goods according to any one of Aspects 1 to 11, comprising a
step of forming a nanofiber having a number-average monofilament
fineness of 1.times.10.sup.-8 to 2.2.times.10.sup.-3 dtex by
treating a pile fabric having pile yarns of polymer alloy fibers
consisting of sea and island components with a liquid dissolving
the sea component but not dissolving the ground yarn.
ADVANTAGEOUS EFFECT OF THE INVENTION
[0014] As will be described below, it is possible according to the
present invention to provide a skin care goods that is superior in
the wiping efficiency of removing dirt on the skin surface and also
in the depth of the sulcus cutis and pores of the skin and yet low
irritant to the skin. In addition, the skin care goods utilizing
nanofiber according to the present invention also provides the user
with comfortableness. The skin care goods according to the present
invention is also superior in dimensional stability and texture and
favorable in hand, compared to the fabrics only of nanofiber.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is a schematic cross-sectional view illustrating an
example of the woven or knitted fabric constituting the skin care
goods according to the present invention.
[0016] FIG. 2 is a TEM micrograph showing the cross section of a
polymer alloy fiber, nanofiber precursor.
[0017] FIG. 3 is SEM micrograph showing the surface of a bundle of
nylon 6 nanofiber filaments.
[0018] FIG. 4 is a surface SEM micrograph showing a bundle of nylon
6 nanofiber filaments when wetted and swollen with water.
[0019] FIG. 5 is a cross-sectional micrograph of a pile yarn of a
bundle of nylon 6 nanofiber filaments bonded to an artificial skin
(cow leather).
[0020] FIG. 6 is a SEM micrograph showing a pile yarn of a bundle
of nylon 6 nanofiber filaments capturing dirt (a captured dirt
particle shown in circle).
[0021] FIG. 7 is a schematic view illustrating a bundle of
nanofiber filaments being swollen by absorption of water and
deformed by external force and capturing and removing a dirt in the
depth of a pore while enclosing the dirt.
[0022] FIG. 8 is a schematic view comparing the cut pile (a) and
the loop pile (b) of a pile yarn of a bundle of nanofiber
filaments.
EXPLANATION OF NUMERALS
[0023] 1: Loop pile yarn [0024] 2: Ground yarn [0025] 3: Cut pile
yarn [0026] 4: Cow leather [0027] 5: Nanofiber pile yarn [0028] 6:
Nanofiber bundle under standard condition [0029] 7: Nanofiber
bundle under wet condition [0030] 8: Nanofiber bundle during
deformation [0031] 9: Skin [0032] 10: Dirt particle [0033] 11: Pile
fabric ground (basic structure) [0034] 12: Island (domain) [0035]
13: Sea (matrix)
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0036] The thermoplastic polymer for the nanofibers constituting
the pile yarn for the skin care goods according to the present
invention may be, for example, polyester, polyamide, polyolefin,
polyphenylene sulfide (PPS) or the like. Among them, polyamides
such as nylon 6, which have strong hydrogen bonds, are preferable
for preservation of the nanofiber bundle shape, as will be
described below.
[0037] It is important that the pile yarn is made of nanofibers in
the skin care goods according to the present invention. The
nanofiber, when used, reaches into the depth of the sulcus cutis
and pores of the skin and allows removal of the dirt therein,
differently from skin care goods made of conventional ultrafine
fibers (microfibers). It is probably because the nanofiber has a
smaller fiber diameter, and also a small geometrical moment of
inertia, an indicator of the deformability of nanofiber, of
1.0.times.10.sup.-32 to 2.5.times.10.sup.-3, which is smaller than
that of conventional ultrafine fibers, and thus, higher fiber
flexibility. Thus, the pile yarn, which contains nanofiber
filaments that are more deformable and dispersible when in contact
with the skin, reaches together densely into the depth of sulcus
cutis and pores of the skin, removing fine dirt therein (see FIG.
5).
[0038] In addition, the nanofiber prohibits localized concentration
of stress and also of friction on the skin significantly and
enlargement of the pores.
[0039] Further, the nanofiber also allows preparation of fine foams
having a diameter of 1.times.10.sup.1 .mu.m or less and adsorption
of the dirt in the depth of the pores on the fine foams. The foam
is smaller and more fine than that made with conventional ultrafine
fibers reported for example in Patent Document 3 described
above.
[0040] On the other hand, with a conventional ultrafine fiber, it
is not possible to make a sufficient number of the filaments fit
into the sulcus cutis and pores of the skin, because of its larger
monofilament fineness. Because such a fiber does not give a bundle
as described below and is thus resistant to deformation along the
sulcus cutis and pores of the skin, it cannot remove the fine dirt
therein. In addition, the less deforming ultrafine fiber often
causes stress concentration on the skin, damaging the horny layer
and applying excessive friction on the skin.
[0041] The fineness of the nanofiber is 1.times.10.sup.-8 to
2.2.times.10.sup.-3 dtex, as number-average monofilament fineness
(corresponding to a monofilament diameter of 1 to 500 nm in the
case of nylon 6), and preferably 4.times.10.sup.-4 dtex or less
(corresponding to a monofilament diameter of 211 nm, in the case of
nylon 6 having a density of 1.14 g/cm.sup.3), more preferably
2.times.10.sup.-4 dtex or less (monofilament diameter of 149 nm or
less in the case of nylon 6), still more preferably
1.times.10.sup.-4 dtex or less (monofilament diameter of 106 nm or
less in the case of nylon 6), and still more preferably,
8.times.10.sup.-6 to 6.times.10.sup.-5 dtex (monofilament diameter
of 30 to 82 nm in the case of nylon 6). It is possible
advantageously to make the nanofiber fit into the depth of the
sulcus cutis and pores of the skin easily and remove the dirt
therein, by reducing the number-average monofilament fineness of
the nanofiber to 2.2.times.10.sup.-3 dtex or less. On the other
hand, when the fineness is smaller than 1.times.10.sup.-8 dtex, the
nanofiber and also its pile yarn become unsatisfactory in
strength.
[0042] The nanofiber preferably forms a bundle of filaments by
aggregation under standard condition. The nanofiber bundle swells
by absorption of liquid (see FIG. 4) and is flattened when in
contact with the skin, with the surface nanofiber filaments
deforming or dispersing themselves along the wrinklessulcus cutis
and pores of the skin. The deformation and dispersion of the
nanofiber filaments leads to breakdown of larger dirt and takes the
dirt deep into the nanofiber bundle. Fine dirt present in the
sulcus cutis and pores of the skin are collected deep into the
bundle during high contact of the dispersed nanofiber filaments
with the depth the sulcus cutis and pores of the skin (see FIGS. 6
and 7). The removed dirt is protected from re-deposition on the
skin, as it is taken deep into the nanofiber bundle.
[0043] Such a nanofiber is obtained, for example, by the following
method:
[0044] Namely, it is produced by preparing a polymer alloy
consisting of the sea (matrix) of an easily soluble polymer and
islands (domains) of a hardly soluble polymer by using two or more
polymers different in solubility in solvents, and spinning and
solidifying the polymer alloy into fiber by cooling. After drawing
and heat treatment as needed, the polymer alloy fiber obtained is
treated with a solvent for removal of the easily soluble polymer
preferably to an extent of 99.9% or more, to give nanofiber.
[0045] In the method above, the diameter of the nanofiber is
determined mostly by the size of the islands (domains) in the
nanofiber precursor polymer alloy fiber.
[0046] The size of the island (domain) may be controlled by
adjustment of polymer blending, and intense blending in a kneading
extruder, static mixer or the like is desirable.
[0047] The combination of polymers also exerts significant
influence on the size of the island (domain). The island (domain)
polymer and the sea (matrix) polymer are preferably incompatible to
each other, to make the island (domain) more circular in shape.
However, it is difficult to disperse the island (domain) polymer
ultrafinely simply by using a combination of different incompatible
polymers. Thus, the polymer combination is preferably selected by
using solubility parameter (SP value) as an indicator. The SP value
is a parameter reflecting the cohesive force of substance, which is
defined by (energy of vaporization/molar volume).sup.1/2. A
difference of two polymer SP values of 1 to 9 (MJ/m.sup.3).sup.1/2
is favorable both for the circularity of the island (domain) and
ultrafine dispersion of the islands by incompatibilization. For
example, nylon 6 (N6) and polyethylene terephthalate (PET), which
have a SP value difference of about 6 (MJ/m.sup.3).sup.1/2, is a
favorable combination, but N6 and polyethylene (PE), which have a
SP value difference of about 11 (MJ/m.sup.3).sup.1/2, is an example
of unfavorable combination.
[0048] The melt viscosity also influenced on the size of the island
(domain). It is favorable to make the melt viscosity of the
island-component polymer smaller than that of the sea-component
polymer for production of nanofiber, because it facilitates
deformation of the island-component polymer by shearing force and
thus fine dispersion of the island-component polymer. However,
excessive reduction of the viscosity of the island-component
polymer makes the polymer more like the sea-component polymer,
prohibiting increase in the blend rate in the entire fiber, and
thus, the viscosity of the island-component polymer is preferably
1/10 or more of the viscosity of the sea-component polymer.
[0049] The solvent dissolving the sea (matrix) polymer but hardly
dissolving the island (domain) polymer is, for example, an alkaline
solution, an acidic solution, an organic solvent, a supercritical
fluid, or the like. For example, in the case of a combination of
nylon and polyester, Nylon is hardly soluble, while polyester,
easily soluble in alkaline solution.
[0050] The raw material for the ground yarn constituting the pile
fabric in the skin care goods according to the present invention
may be a synthetic or a natural fiber, but, if the polymer alloy
fiber is converted into the pile yarn by sea-removing treatment
after a pile fabrics is prepared, the raw material is preferably a
material undissolved in the sea-removing treatment, more preferably
the same as the nanofiber used as pile, from the points of freedom
in designing for example of dyeing and also of the texture and
touch feeling during use of the resulting goods.
[0051] In addition, the water- or oil-absorbing property thereof is
preferably is not larger than that of the nanofiber for the pile
yarn. It is thus possible to make the nanofiber pile filaments used
as the skin-wiping layer hold aqueous or oil cleansing lotion or
facial wash more efficiently.
[0052] The monofilament fineness of the ground yarn is preferably
more than 8.times.10.sup.-4 dtex, more preferably 1.times.10.sup.-1
dtex or more. It is possible to improve the dimensional stability
and the texture without sacrifice of the nanofiber wiping
efficiency, by using such a ground yarn.
[0053] Favorable shapes of the pile fabric include woven and knit
fabrics. Typical examples of the knit fabrics include circular
knitted fabric, tricot fabric, double raschel fabric, and the
like.
[0054] The length of the pile in pile fabric is preferably in the
range of 1 to 10 mm, more preferably in the range of 2 to 5 mm. It
is possible to make the nanofiber pile filaments more flexible and
provide the filaments with favorable wiping efficiency and
comfortable texture when wet, by making the length 1 mm or more. It
is also possible to prevent deterioration in texture by fall down
of the pile filaments, by making the length not more than 10
mm.
[0055] The nanofiber pile filaments in the pile fabric of the skin
care goods according to the present invention are favorably cut
pile. In this way, it is possible to increase the degree of freedom
in movement of the nanofiber in pile yarn, to make the tip of the
nanofiber fit into the sulcus cutis and pores of the skin, and to
increase the wiping efficiency of the yarn. It is further possible
to spread the stress applied to the skin widely during wiping and
obtain comfortable texture under wet condition. (see FIG. 8).
[0056] When a conventional microfibers is used for the pile yarn,
the cut pile often gave unfavorable irritate to the skin by contact
of the tip of the fiber to the skin. For that reason, the cut of
pile filaments at the tip in skin care goods could be conceivable
only when such a nanofiber is used.
[0057] The possible shapes of the skin care goods according to the
present invention include towel, mitten, gloves, finger cot, and
the like. The towel shape is preferable, because it allows
modification of its use method according to the preference of the
user. In addition, shapes covering the hand or the finger such as
mitten, gloves and finger cot are also favorable, from the point of
easiness in handling.
[0058] In addition, double faced pile fabrics a favorable shape of
the skin care goods according to the present invention. It is
possible, by double faced pile fabric containing nanofiber pile
yarns, to make the user use the skin care goods according to the
present invention without recognition of the front or rear face of
it and improve the handling efficiency and the impression of use.
In processing into such a shape, the pile filaments may be formed
directly on both faces of the pile fabric, but, for preparation of
a skin care goods with high pile density, it is preferable to
laminated two single faced pile fabrics. For example, a method of
sewing the edge of the fabric or a method of bonding the pile
fabrics with an adhesive agent such as urethane adhesive may be
used in laminating the pile fabrics.
[0059] Alternatively, a medium such as net that accelerates foaming
of facial wash may be used in combination for more favorable
foaming of the facial wash.
[0060] Yet alternatively, a cushion material covered with a pile
fabric containing nanofiber pile yarns is also favorable, and the
shape thereof may be mitten or gloves.
[0061] Then, the method of producing a skin care goods according to
the present invention is a method of producing the skin care goods
according to the present invention, comprising a step of treating a
pile fabric having pile yarns of polymer alloy fibers consisting of
sea and island components with a liquid dissolving the sea
component but not dissolving the ground yarn and forming nanofiber
filaments having a number-average monofilament fineness of
1.times.10.sup.-8 to 2.2.times.10.sup.-3 dtex. As described above,
the method of subjecting a polymer alloy fiber to a sea-removing
treatment is favorable for forming nanofiber filaments, and it is
possible to obtain good form stability and comfortable texture of a
pile fabrics even after sea-component removal, by carrying out the
sea-removing treatment with a liquid dissolving the sea component
but not dissolving the ground yarn, i.e., by using a ground yarn
resistant to solubilization in the sea-removing treatment.
EXAMPLES
Measuring Method
(1) Weight-Average Molecular Weight of Polylactic Acid
[0062] A sample was dissolved in chloroform, and tetrahydrofuran
was added thereto, to give a test solution. It was analyzed by
using a gel-permeation chromatographic (GPC) apparatus Waters 2690
manufactured by Waters at 25.degree. C. to give weight-average
molecular weight as polystyrene.
(2) Number-Average Monofilament Fineness of Nanofiber
[0063] Five pile filaments were withdrawn at random from a region
of 5 cm.times.5 cm in dimension, and each ultrathin section thereof
in the filament cross-sectional direction was prepared and observed
under a transmission electron microscope (TEM) (H-7100FA,
manufactured by Hitachi Ltd., magnification: 100,000).
[0064] From the TEM micrograph of the fiber cross-sectional section
by using image processing software (WINROOF) the monofilament
diameters of 300 or more filaments chosen at random in the same
cross section respectively of the five pile yarns, i.e., a total of
1,500 cross sections, were determined, and the simple average
thereof obtained was used as the number-average monofilament
diameter of the nanofiber. A monofilament fineness was calculated
from the monofilament diameter according to the following
Formula:
Number-average monofilament
fineness(dtex)=(d.times.D.sup.2.times..pi./4).times.10.sup.-8
Wherein, d: density (g/cm.sup.3), and D: number-average
monofilament diameter (nm).
(3) Evaluation of Dirt-Wiping Efficiency A
[0065] The artificial skin used for evaluation was an expanded
polyethylene sheet ("Toraypef".RTM., manufactured by Toray
Industries, Inc.). A highly waterproof cosmetic preparation (eye
liner fluid, manufactured by Shiseido Co., Ltd.) was applied
thereon in a circular shape of 1 cm in diameter and dried at
20.+-.2.degree. C. and 65.+-.2% RH for 12 hours.
[0066] The test piece was cut into a piece of 6 cm in length and 8
cm in width; a cleansing lotion (white cleansing water,
manufactured by Kose Cosmeport Corp.) was impregnated into the test
piece in an amount of 2.6 times of the mass of the test piece; and
the test piece was bonded to a silicone rubber plate (6 cm in
length.times.7 cm in width.times.1 cm in thickness).
[0067] The artificial skin in the area coated with the cosmetic
preparation was rubbed for wiping reciprocally five times with the
test piece under a loaded pressure of 0.5 cN/mm.sup.2 (300 g/2.5
cm.sup.2), a velocity of 2 cm/s, and a wiping width of 2 cm.
Removal of dirt after the wiping operation was evaluated by visual
examination and rated in the following five categories.
5: All dirt in the sulcus cutis of artificial skin removed 4: Some
dirt remaining in the sulcus cutis of artificial skin 3:
Significant dirt remaining in the sulcus cutis of artificial skin
2: Some dirt remaining in the sulcus cutis and also on the surface
of artificial skin 1: Significant dirt remaining in the sulcus
cutis and also on the surface of artificial skin
(4) Evaluation of Dirt-Wiping Efficiency B
[0068] A highly waterproof cosmetic preparation (eye liner fluid,
manufactured by Shiseido Co., Ltd.) was applied in an area of 0.5
cm.times.2 cm on the internal arm and dried thereon under normal
temperature and normal humidity for 30 minutes.
[0069] The test piece was cut into a piece of 6 cm in length and 8
cm in width; a cleansing lotion (white cleansing water,
manufactured by Kose Cosmeport Corp.) was impregnated into the test
piece in an amount 2.6 times of the mass of the test piece; and the
test piece was wound around a silicone rubber rod (diameter:
approximately 8 mm), and the arm area previously coated with the
cosmetic preparation was wiped ten times in a fixed direction.
[0070] Removal of dirt after the wiping operation was evaluated
under a microscope (VH-6300C manufactured by Keyence Corp.,
magnification: 300) and rated in the following five categories.
5: All dirt in the depth of the sulcus cutis and pores of the skin
removed 4: Some dirt remaining in the depth of the sulcus cutis and
pores of the skin 3: Significant dirt remaining in the depth of the
sulcus cutis and pores of the skin 2: Some dirt remaining in the
depth of the sulcus cutis and pores and also on the surface of the
skin 1: Significant dirt remaining in the depth of the sulcus cutis
and pores and also on the surface of the skin
(5) Irritation Test
[0071] An agar sheet prepared by dissolving agar (pure agar,
manufactured by Sanada Co., Ltd.) and solidifying the solution by
cooling was used as the artificial skin for evaluation.
[0072] The test piece was cut into a piece of 6 cm in length and 8
cm in width; water was impregnated into the sheet in an amount of
2.6 times of the mass of the test piece; the test piece was wound
around a silicone rubber rod (diameter: approximately 8 mm), and
the surface of the agar sheet was wiped ten times in a fixed
direction.
[0073] The scratching on the agar sheet surface after wiping
operation was observed by visual examination and rated in the
following five categories.
5: No scratching of the surface of the agar 4: Some scratching of
the surface of the agar 3: scratching of the surface of the agar 2:
Deep scratching of the surface of the agar 1: Many deep scratchings
of the surface of the agar
(6) Evaluation of Foaming Efficiency
[0074] A polyethylene net of 10 cm.times.10 cm in dimension (8
mesh) was used as the medium accelerating foaming, and the net was
enclosed tightly with the test piece of 15 cm.times.15 cm, and the
opening was sewn with a cotton yarn.
[0075] A face wash solution (concentration: 20 mass %, temperature
37.degree. C.) was impregnated therein in an amount of 30% of the
mass of the test piece, and the test piece was beaten a hundred
times with a pestle for foaming. The surface shape of the foam
obtained was observed under a microscope (VH-6300 C manufactured by
Keyence Corp., magnification: 300 times).
(7) Monitoring Test (Face Wash Puff Application)
[0076] The test piece was cut into a piece of 6 cm in length and 8
cm in width, and a cleansing lotion (white cleansing water,
manufactured by Kose Cosmeport Corp.) was impregnated into the test
piece in an amount of 2.6 times of the test piece mass. A makeup
cleansing test by using the test piece was carried out with 50
females in 20's to 50's of age, and the efficiency of removal of
cosmetic preparation, texture, skin irritation, convenience in use,
and others were studied by questionnaire survey.
(8) Monitoring Test (Facial Washcloth Application)
[0077] The test piece was cut into a piece of 6 cm in length and 8
cm in width; and the test piece was then wetted with a facial wash
("Dove.RTM. moisture foam F" manufactured by Unilever Japan Co.,
Ltd.) and then allowed to foam.
[0078] A monitoring test by using the test piece was carried out
with 50 females in 20's to 50's of age, and the efficiency of
removal of cosmetic preparation, texture, skin irritation,
convenience in use, and others were studied by questionnaire
survey.
Example 1
Polymer Alloy Fiber
[0079] Nylon 6 (N6) having a melt viscosity 212 Pas (262.degree.
C., at a shear rate of 121.6 sec.sup.-1) and a melting point of
220.degree. C. (45 mass %) and poly-L-lactic acid having a
weight-average molecular weight of 120,000, a melt viscosity of 30
Pas (240.degree. C., shear rate: 2432 sec.sup.-1), a melting point
of 170.degree. C., and an optical purity of 99.5% or more (55 mass
%) were weighed separately, and fed separately to a biaxial
extrusion kneader described below in detail, where they are melted
and blended at 220.degree. C., to give polymer alloy chips.
Screw shape: Unidirectional complete-gearing double-start thread
screw Screw diameter: 37 mm, Effective length: 1670 mm, L/D=45.1
Blending region length: extrusion side from 1/3 of screw effective
length Vent: 2 positions.
[0080] The polymer alloy chip obtained was supplied to a spinning
machine, molten at 230.degree. C. therein, filtered through a metal
nonwoven fabric having a critical filtration diameter of 15 .mu.m
in the spin block at a spinning temperature of 230.degree. C., and
melt-spun out of nozzles having a diameter of 0.3 mm and a length
of 0.55 mm at a nozzle plate temperature 215.degree. C. The
extruded filaments were solidified by cooling in the range of 1 m
in length with cooling air at 20.degree. C., applied with an oil by
an oil supply guide placed 1.8 m below the nozzles, withdrawn at a
spinning rate of 3000 m/minute, and then, drawn under the condition
of a drawing temperature of 90.degree. C. at a drawing rate of 1.5
and a heat set temperature of 130.degree. C.
[0081] The multifilament of polymer alloy fiber thus obtained had a
size of 133 dtex/48 filaments, a strength of 3.6 cN/dtex, an
elongation of 40%, and a Percentage Uster of 0.7%. Observation of
the cross-sectional section of the polymer alloy fiber obtained
under TEM revealed that it had a sea/island structure containing
poly-L-lactic acid as the sea (matrix) and N6 as islands (domains)
and the islands (domains) were dispersed very finely at a
number-average diameter of 110 nm.
(Pile Yarn)
[0082] The multifilament of the polymer alloy fiber was used as the
pile yarn.
(Ground Yarn)
[0083] A nylon 6 multifilament having a total fineness of 75 dtex
of 24 filaments (monofilament fineness: 3.1 dtex) was used as the
ground yarn.
(Knitting)
[0084] A loop-pile knitted fabric having a pile length of 2.2 mm
was prepared in a sinker-pile single circular knitting machine by
using the multifilament of the polymer alloy fibers as the pile
yarn and also as the ground yarn.
(Skin Caregoods)
[0085] The pile knitted fabric was treated with 1% aqueous sodium
hydroxide solution at a temperature of 98.degree. C. and a bath
ratio of 1:100 for 1 hour by immersion, removing 99.9% or more of
the polylactic acid in the polymer alloy fiber by hydrolysis, and
thus, giving a skin care goods of a pile fabric having pile yarns
of N6 nanofiber bundles and ground yarns of N6 multifilaments.
[0086] The fineness distribution of the N6 nanofiber, as determined
from the 1,500 samples in measurement (1), was in the range of
1.times.10.sup.-8 to 4.times.10.sup.-4 dtex, and the number-average
monofilament fineness thereof was 1.times.10.sup.-4 dtex.
[0087] The skin care goods obtained gave favorable results both in
the dirt-wiping efficiency tests A and B. In the irritation test,
the skin care goods was extremely low irritative. It also gave
favorable results in all test items in the monitoring test. In
addition in the foaming efficiency test, generation of fine foams
having a diameter of 10 .mu.m or less was observed.
Example 2
Polymer Alloy Fiber
[0088] A multifilament of polymer alloy fiber similar to that in
Example 1 was prepared.
(Pile Yarn)
[0089] The multifilament of polymer alloy fiber above was used as
the pile yarn.
(Ground Yarn)
[0090] The yarn the same as that used in Example 1 was used as the
ground yarn.
(Knitting)
[0091] A pile knitted fabric was prepared in a similar manner to
Example 1 by using the pile yarn and the ground yarn.
(Skin Care Goods)
[0092] The pile knitted fabric was subjected to sea-removing
treatment in a similar manner to Example 1 and the tip of the loop
pile was cut by emery processing, to give a skin care goods.
[0093] The skin care goods obtained gave favorable results both in
the dirt-wiping efficiency tests A and B. Favorably in the
irritation test, there was almost no scratching observed on the
surface. It also gave favorable results in all test items in the
monitoring test. In particular, there were many opinions that the
texture of the goods was more favorable in the questionnaire
survey, compared to the results in Example 1, because of cut pile.
In the foaming efficiency test, generation of fine foams having a
diameter of 10 .mu.m or less was observed.
Example 3
Polymer Alloy Fiber
[0094] A multifilament of polymer alloy fiber similar to that in
Example 1 was prepared.
(Pile Yarn)
[0095] The multifilament of polymer alloy fiber was used as the
pile yarn.
(Ground Yarn)
[0096] A nylon 6 multifilament having a total fineness of 110 dtex
of 24 filaments (monofilament fineness: 4.6 dtex) was used as the
ground yarn.
(Knitting)
[0097] A pile knitted fabric was prepared in a similar manner to
Example 1, except that the ground yarn above was used.
(Skin Caregoods)
[0098] The pile knitted fabric was subjected to sea-removing
treatment in a similar manner to Example 1, to give a skin care
goods.
[0099] The fineness distribution of the N6 nanofiber, as determined
from the 1,500 samples in measurement (1), was in the range of
1.times.10.sup.-8 to 4.times.10.sup.-4 dtex, and the number-average
monofilament fineness thereof was 1.times.10.sup.-4 dtex.
[0100] The skin care goods obtained gave favorable results both in
the dirt-wiping efficiency test A and B. In the irritation test,
the skin care goods was extremely low irritative. It also gave
favorable results in all test items in the monitoring test. In
particular, the monofilament of ground yarn was thicker and
rigidder than that of the skin care goods prepared in Example 1,
and thus, there were many opinions that the goods was superior in
dimensional stability and more favorable in the convenience in use
in the questionnaire survey. Alternatively in the foaming
efficiency test, generation of fine foams having a diameter of 10
.mu.m or less was observed.
Example 4
Polymer Alloy Fiber
[0101] A multifilament of polymer alloy fiber similar to that in
Example 1 was prepared.
(Pile Yarn)
[0102] The multifilament of polymer alloy fiber above was used as
the pile yarn.
(Ground Yarn)
[0103] A nylon 6 multifilament having a total fineness of 110 dtex
of 24 filaments (monofilament fineness: 4.6 dtex) was used as the
ground yarn.
(Knitting)
[0104] A pile knitted fabric was prepared in a similar manner to
Example 1 by using the pile yarn and the ground yarn.
(Skin Care Goods)
[0105] The pile knitted fabric was subjected to sea-removing
treatment similarly to that used in Example 1.
(The Processings Above are the Same as Those in Example 3.)
[0106] Then, the tip of the loop pile was cut by emery processing,
to give a skin care goods.
[0107] The skin care goods obtained gave favorable results both in
the dirt-wiping efficiency tests A and B. Favorably in the
irritation test, there was almost no scratching observed on the
surface. It also gave favorable results in all test items in the
monitoring test. In particular, because of cut pile, there were
many opinions that the texture was "very comfortable" than in
Example 3 in the questionnaire survey. In particular, the
monofilament of ground yarn was thicker and rigidder than that of
the skin care goods prepared in Example 2, and thus, there were
many opinions that the goods was superior in dimensional stability
and more favorable in the convenience in use in the questionnaire
survey. Alternatively in the foaming efficiency test, generation of
fine foams having a diameter of 10 .mu.m or less was observed.
Examples 5 and 6
Polymer Alloy Fiber
[0108] A multifilament of polymer alloy fiber similar to that in
Example 1 was prepared.
(Pile Yarn)
[0109] The multifilament of polymer alloy fiber above was used as
the pile yarn.
(Ground Yarn)
[0110] A nylon 6 multifilament having a total fineness of 110 dtex
of 24 filaments (monofilament fineness: 4.6 dtex) was used as the
ground yarn (similarly to Example 3).
(Knitting)
[0111] A double raschel fabric having a gap between the two knitted
fabrics at 6.0 mm was prepared by using the pile and ground yarns
in a double raschel knitting machine. The double raschel knitted
fabric was cut into two fabrics in the region corresponding to a
pile length of 1:3, to give a cut pile knitted fabric having a pile
length of 1.5 mm and a cut pile knitted fabric having a pile length
of 4.5 mm.
(Skin Care Goods)
[0112] The two kinds of pile knitted fabrics were respectively
subjected to sea-removing treatment similarly to that described in
Example 1, to give skin care goods. The goods having a pile length
of 1.5 mm was prepared in Example 5, while that having a pile
length of 4.5 mm was prepared in Example 6.
[0113] Each of the N6 nanofiber used in Examples 5 and 6 had a
fineness distribution, as determined from 1,500 samples in
measurement (1), in the range of 1.times.10.sup.-8 to
4.times.10.sup.-4 dtex, and the number-average monofilament
fineness thereof was 1.times.10.sup.-4 dtex.
[0114] Each of the samples obtained showed favorable results both
in the dirt-wiping efficiency tests A and B. Favorably in the
irritation test, there was almost no scratching observed on the
surface in both Examples. Also in the monitoring tests, the samples
of both Examples gave favorable result in all test items. In
particular in Example 6, there were more favorable opinions on
texture in the questionnaire survey. Alternatively in the foaming
efficiency test, generation of fine foams having a diameter of 10
.mu.m or less was observed.
Examples 7 and 8
Polymer Alloy Fiber
[0115] A multifilament of polymer alloy fiber similar to that in
Example 1 was prepared.
(Pile Yarn)
[0116] The multifilament of polymer alloy fiber above was used as
the pile yarn.
(Ground Yarn)
[0117] A nylon 6 multifilament having a total fineness of 110 dtex
of 24 filaments (monofilament fineness: 4.6 dtex) was used as the
ground yarn (similarly to Example 3).
(Knitting)
[0118] A double raschel fabric having a gap between the two knitted
fabrics at 6.0 mm was prepared by using the pile and ground yarns
in a double raschel knitting machine. The double raschel fabric was
cut into two fabrics in the region corresponding to a pile length
of 5:7, to give a cut pile knitted fabric having a pile length of
2.5 mm and a cut pile knitted fabric having a pile length of 3.5
mm.
[0119] Both in Examples 7 and 8, the fineness distribution of the
N6 nanofiber, as determined from the 1,500 samples in measurement
(1), was in the range of 1.times.10.sup.-8 to 4.times.10.sup.-4
dtex, and the number-average monofilament fineness thereof was
1.times.10.sup.-4 dtex.
(Skin Care Goods)
[0120] The two kinds of pile knitted fabrics were respectively
subjected to sea-removing treatment similarly to that described in
Example 1, to give skin care goods. The goods having a pile length
of 2.5 mm was prepared in Example 7, while that having a pile
length of 3.5 mm was prepared in Example 8.
[0121] Each of the samples obtained showed favorable results both
in the dirt-wiping efficiency tests A and B. Favorably in the
irritation test, there was almost no scratching observed on the
surface in both Examples. Also in the monitoring test, the samples
of both Examples gave favorable results in all test items. In
particular in both Examples, there were more favorable opinions on
texture in the questionnaire survey. Alternatively in the foaming
efficiency test, generation of fine foams having a diameter of 10
.mu.m or less was observed.
Example 9
Polymer Alloy Fiber
[0122] A multifilament of polymer alloy fiber similar to that in
Example 1 was prepared.
(Pile Yarn)
[0123] The multifilament of polymer alloy fiber above was used as
the pile yarn.
(Ground Yarn)
[0124] The yarn identical with that used in Example 1 was used as
the ground yarn.
(Knitting)
[0125] A pile knitted fabric was prepared in a similar manner to
Example 1 by using the pile and ground yarns.
(Skin Care Goods)
[0126] The pile knitted fabric was subjected to sea-removing
treatment similarly to that used in Example 1, and then, the tip of
the loop pile was cut by raising in emery processing, to give a
skin care goods.
(The Processings Above are the Same as Those in Example 2.)
[0127] Two test pieces of the cut pile knitted fabric cut to a
dimension suitable were prepared respectively, and sewn with a
cotton thread with the ground yarn faces thereof facing each other,
to give a skin care goods with the double faced piles.
[0128] The skin care goods obtained gave favorable results both in
the dirt-wiping efficiency tests A and B. Favorably in the
irritation test, there was almost no scratching observed. It also
gave favorable results in all test items in the monitoring test.
Because two sheets were laminated, there were many opinions that
the goods was superior in hand and convenience in use in the
questionnaire survey. Alternatively in the foaming efficiency test,
generation of fine foams having a diameter of 10 .mu.m or less was
observed.
Example 10
Polymer Alloy Fiber
[0129] A multifilament of polymer alloy fiber similar to that in
Example 1 was prepared.
(Pile Yarn)
[0130] The multifilament of polymer alloy fiber above was used as
the pile yarn.
(Ground Yarn)
[0131] The yarn identical with that used in Example 1 was used as
the ground yarn.
(Knitting)
[0132] A pile knitted fabric was prepared in a similar manner to
Example 1 by using the pile and ground yarns.
(Skin Caregoods)
[0133] The pile knitted fabric was subjected to sea-removing
treatment similarly to that used in Example 1, and then, the tip of
the loop pile was cut by emery processing, to give a skin care
goods.
(The Processings Above are the Same as Those in Example 2.)
[0134] Two cut pile knitted fabrics obtained were piled on and
bonded to each other with their ground yarn faces facing each
other; and the ground yarn faces were bonded to each other with a
urethane-based adhesive (Tyforce.RTM. 865HV, manufactured by
Dainippon Ink and Chemicals, Inc.) in the dotted pattern in a
coating amount of approximately 4 g/m.sup.2, to give a skin care
goods with double faced pile.
[0135] The skin care goods obtained gave favorable results both in
the dirt-wiping efficiency tests A and B. Favorably in the
irritation test, there was almost no scratching observed. It also
gave favorable results in all test items in the monitoring test.
Because two sheets were laminated, there were many opinions that
the goods was superior in hand and convenience in use in the
questionnaire survey. Alternatively in the foaming efficiency test,
generation of fine foams having a diameter of 10 .mu.m or less was
observed.
Comparative Example 1
[0136] A commercially available microfiber facial washcloth
(removal towel, available from Cogit Co., Ltd., number-average
monofilament fineness: 0.22 dtex) was evaluated.
[0137] In the dirt-wiping efficiency test, the washcloth was found
to be unsatisfactory both in test items A and B, compared to the
skin care device according to the present invention. Also in the
irritation test, it showed strong scratching action. In addition,
it was not found favorable compared to the skin care goods
according to the present invention in each test item of the
monitoring test. Further in the foaming efficiency test, there were
observed only large foams having a diameter of about 100 .mu.m to 1
mm.
Comparative Example 2
[0138] A commercially available microfiber-based facial washcloth
(Preri Cuticle-Refreshing Cloth.RTM., manufactured by Lucky
Corporation) was evaluated.
[0139] In the dirt-wiping efficiency test, the washcloth was found
to be unsatisfactory both in test items A and B, compared to the
skin care goods according to the present invention. Also in the
irritation test, it showed strong scratching action. In addition,
it was not found favorable compared to the skin care goods
according to the present invention in each test item of the
monitoring test. In particular, there were many opinions that it
was more irritant and stimulating to the skin and caused tingle
after use. Also in the foaming efficiency test, there were observed
only large foams having a diameter of about 100 .mu.m to 1 mm.
Comparative Example 3
[0140] A commercially available microfiber-based facial washcloth
(Toraysee.RTM. facial washcloth, manufactured by Toray Industries,
Inc., number-average monofilament fineness: 0.08 dtex) was
evaluated.
[0141] In the foaming efficiency test, there were observed fine
foams having a diameter of 1 to 20 .mu.m, and the size of the foams
was not even.
TABLE-US-00001 TABLE 1 Example 1 Example 2 Example 3 Example 4 Pile
length 2.2 mm 2.2 mm 2.2 mm 2.2 mm Pile shape Loop Cut Loop Cut
Ground yarn 75 .times. 24 .rarw. 110 .times. 24 .rarw.
dtex(dexitex)xf(filament) Configuration Single-sided Single-sided
Single-sided Single-sided pile cloth pile cloth pile cloth pile
cloth Dirt-wiping effeciency test A 4 5 4 5 Dirt-wiping effeciency
test B 4 5 4 5 Irritation test 4 5 4 5
TABLE-US-00002 TABLE 2 Example 5 Example 6 Example 7 Example 8 Pile
length 1.5 mm 4.5 mm 2.5 mm 3.5 mm Pile shape Cut Cut Cut Cut
Ground yarn 110 .times. 24 .rarw. 110 .times. 24 .rarw.
dtex(dexitex)xf(filament) Configuration Single-sided Single-sided
Single-sided Single-sided pile cloth pile cloth pile cloth pile
cloth Dirt-wiping effeciency test A 5 5 5 5 Dirt-wiping effeciency
test B 5 5 5 5 Irritation test 4 5 5 5
TABLE-US-00003 TABLE 3 Comparative Comparative Comparative Example
9 Example 10 Example 1 Example 2 Example 3 Pile length 2.2 mm 2.2
mm -- -- -- Pile shape Cut Cut -- -- -- Ground yarn 75 .times. 24
.rarw. -- -- -- dtex(dexitex)xf (filament) Configuration
Double-sided Double-sided Double-sided -- -- pile cloth pile cloth
pile cloth (2 sheet sewn) (2 sheet sewn) Dirt-wiping 5 5 3 3 2
effeciency test A Dirt-wiping 5 5 2 2 3 effeciency test B
Irritation test 5 4 2 1 1
TABLE-US-00004 TABLE 4 Example 1 Example 2 Example 3 Example 4
Sample Pile length 2.2 mm 2.2 mm 2.2 mm 2.2 mm description Pile
shape Loop Cut Loop Cut Ground yarn dtex(dexitex)xf 75 .times. 24
.rarw. 110 .times. 24 .rarw. (filament) Configuration Single-sided
Single-sided Single-sided Single-sided pile cloth pile cloth pile
cloth pile cloth Questionnaire description When used cosmetic very
favorble 33 42 33 40 as face removal Not different 15 6 14 7 wash
paff from when only facial wash was used (Apparent) 2 2 3 3 back
staining of the dirt on cloth Texture Very comfortable 32 43 32 42
Comfortable 5 3 8 5 Not comfortable 7 2 3 3 Unpleasant 2 0 2 0
Others 4 1 5 0 Skin None 32 40 33 42 irritation Some 8 2 7 3
Significant 2 0 3 3 Others 8 8 7 2 Convenience Very good 20 25 27
30 in use Good 10 13 12 12 Fair 18 9 9 6 Bad 2 3 2 2 Very Bad 0 0 0
0 Others 0 0 0 0 Possibility of Yes 33 32 32 42 future use Yes/no
10 10 10 7 No 5 3 3 0 Others 2 5 5 1
TABLE-US-00005 TABLE 5 Example 5 Example 6 Example 7 Example 8
Sample Pile length 1.5 mm 4.5 mm 2.5 mm 3.5 mm description Pile
shape Cut Cut Cut Cut Ground yarn dtex(dexitex)xf 110 .times. 24
.rarw. 110 .times. 24 .rarw. (filament) Configuration Single-sided
Single-sided Single-sided Single-sided pile cloth pile cloth pile
cloth pile cloth Questionnaire description When used cosmetic very
favorble 43 42 45 44 as face removal Not different 7 2 3 3 wash
paff from when only facial wash was used (Apparent) 0 6 2 3 back
staining of the dirt on cloth Texture Very comfortable 42 48 48 48
Comfortable 5 0 0 0 Not comfortable 2 0 0 0 Unpleasant 1 2 2 2
Others 0 7 0 0 Skin None 32 48 42 47 irritation Some 7 0 3 0
Significant 3 0 0 0 Others 8 2 5 3 Convenience Very good 27 42 38
35 in use Good 8 3 5 3 Fair 13 2 2 2 Bad 0 0 2 2 Very Bad 0 0 0 0
Others 2 3 3 8 Possibility of Yes 35 43 42 45 future use Yes/no 10
5 5 3 No 3 2 2 0 Others 2 0 1 2
TABLE-US-00006 TABLE 6 Comparative Comparative Comparative Example
9 Example 10 Example 1 Example 2 Example 3 Sample Pile length 2.2
mm 2.2 mm -- -- -- description Pile shape Cut Cut -- -- -- Ground
yarn dtex(dexitex)xf 75 .times. 24 .rarw. -- -- -- (filament)
Configuration Double-sided Double-sided Double-sided -- -- pile
cloth pile cloth pile cloth (2 sheet sewn) (2 sheet sewn)
Questionnaire description When used cosmetic very favorble 43 47 23
23 22 as face removal Not different 5 2 15 17 17 wash paff from
when only facial wash was used (Apparent) 2 1 12 10 11 back
staining of the dirt on cloth Texture Very comfortable 44 43 20 12
8 Comfortable 3 2 8 10 10 Not comfortable 0 0 10 18 22 Unpleasant 0
0 10 8 8 Others 3 5 2 2 2 Skin None 40 42 17 5 5 irritation Some 3
2 13 15 8 Significant 0 0 18 26 33 Others 7 6 2 4 4 Convenience
Very good 47 45 30 15 20 in use Good 2 2 7 10 5 Fair 0 0 3 23 23
Bad 0 0 3 2 2 Very Bad 0 0 2 0 0 Others 1 3 5 0 0 Possibility of
Yes 45 45 22 10 5 future use Yes/no 3 2 8 17 22 No 0 15 20 20
Others 2 3 5 3 3
TABLE-US-00007 TABLE 7 Example 1 Example 2 Example 3 Example 4
Sample Pile length 2.2 mm 2.2 mm 2.2 mm 2.2 mm description Pile
shape Loop Cut Loop Cut Ground yarn dtex(dexitex)xf 75 .times. 24
.rarw. 110 .times. 24 -- (filament) Configuration Single-sided
Single-sided Single-sided Single-sided pile cloth pile cloth pile
cloth pile cloth Questionnaire description When used as Dirt
removal Very favorable 34 43 33 43 face wash puff Not different 13
7 14 7 from when only facial wash was used (Apparent) 3 0 3 0 back
staining of the dirt on cloth Texture Very comfortable 32 47 33 45
Comfortable 5 0 8 2 Not comfortable 7 2 5 0 Unpleasant 2 1 2 2
Others 4 0 2 1 Skin None 35 40 37 43 irritation Some 5 2 5 2
Significant 2 0 3 0 Others 8 8 5 5 Convenience Very good 20 20 30
32 in use Good 10 8 10 15 Fair 15 13 5 2 Bad 3 3 2 0 Very Bad 2 6 2
1 Others 0 0 1 0 Possibility of Yes 33 38 37 42 future use Yes/no
10 7 8 5 No 5 3 3 2 Others 2 2 2 1
TABLE-US-00008 TABLE 8 Example 5 Example 6 Example 7 Example 8
Sample Pile length 1.5 mm 4.5 mm 2.5 mm 3.5 mm description Pile
shape Cut Cut Cut Cut Ground yarn dtex(dexitex)xf 110 .times. 24 --
110 .times. 24 -- (filament) Configuration Single-sided
Single-sided Single-sided Single-sided pile cloth pile cloth pile
cloth pile cloth Questionnaire description When used as Dirt
removal Very favorable 45 45 47 45 face wash puff Not different 5 5
2 3 from when only facial wash was used (Apparent) 0 0 1 2 back
staining of the dirt on cloth Texture Very comfortable 43 48 48 48
Comfortable 3 0 0 0 Not comfortable 2 0 0 0 Unpleasant 2 2 2 2
Others 0 0 0 0 Skin None 32 48 42 47 irritation Some 7 0 3 0
Significant 3 0 0 0 Others 8 2 5 3 Convenience Very good 33 42 38
35 in use Good 10 3 5 3 Fair 5 2 2 2 Bad 0 0 2 2 Very Bad 0 0 0 0
Others 2 3 3 8 Possibility of Yes 35 43 42 45 future use Yes/no 10
5 5 3 No 3 2 2 0 Others 2 0 1 2
TABLE-US-00009 TABLE 9 Comparative Comparative Comparative Example
9 Example 10 Example 1 Example 2 Example 3 Sample Pile length 2.2
mm 2.2 mm -- -- -- description Pile shape Cut Cut -- -- -- Ground
yarn dtex(dexitex)xf 75 .times. 24 .rarw. -- -- -- (filament)
Configuration Double-sided Double-sided Double-sided -- -- pile
cloth pile cloth pile cloth (2 sheet sewn) (2 sheet sewn)
Questionnaire description When used as Dirt removal Very favorable
43 45 23 18 15 face wash puff Not different 5 3 17 19 20 from when
only facial wash was used (Apparent) 2 2 10 13 15 back staining of
the dirt on cloth Texture Very comfortable 44 42 17 13 8
Comfortable 3 7 8 13 12 Not comfortable 3 0 13 17 22 Unpleasant 0 0
10 3 3 Others 0 1 2 4 5 Skin None 42 38 17 10 15 irritation Some 5
7 15 13 8 Significant 0 0 15 24 17 Others 3 5 3 3 10 Convenience
Very good 42 40 22 18 15 in use Good 7 7 5 5 5 Fair 0 2 10 15 23
Bad 0 0 7 5 2 Very Bad 0 0 3 5 3 Others 1 1 3 2 2 Possibility of
Yes 45 43 18 11 12 future use Yes/no 2 3 17 15 17 No 0 2 15 23 20
Others 3 2 0 1 1
INDUSTRIAL APPLICABILITY
[0142] The skin care goods according to the present invention,
which is significantly less simulative to the skin and superior in
the efficiency of wiping off the dirt in the depth of the pores, is
extremely useful in the field of skin care goods.
* * * * *