U.S. patent application number 10/948418 was filed with the patent office on 2005-03-24 for liquid container and double container.
This patent application is currently assigned to Hosokawa Yoko Co., Ltd.. Invention is credited to Ichikawa, Toru, Tanaka, Yoji, Umenaka, Kazuhiro.
Application Number | 20050061818 10/948418 |
Document ID | / |
Family ID | 34308933 |
Filed Date | 2005-03-24 |
United States Patent
Application |
20050061818 |
Kind Code |
A1 |
Ichikawa, Toru ; et
al. |
March 24, 2005 |
Liquid container and double container
Abstract
A ring-like reinforcement part 2 is secured to an upper end face
of a bottomed cylindrical container main body 1. The container main
body 1 is formed of a flexible film-like member which is composed
of polyethylene, polypropylene or the like. The reinforcement part
2 has strength enough to prevent the container main body 1 from
greatly deformed and to prevent liquid, such as adhesive agent,
coating material or the like stored in the container main body 1
from overflowing when the container main body 1 is lifted up
through the reinforcement part 2.
Inventors: |
Ichikawa, Toru; (Tokyo,
JP) ; Umenaka, Kazuhiro; (Tokyo, JP) ; Tanaka,
Yoji; (Yokohama, JP) |
Correspondence
Address: |
OSHA & MAY L.L.P.
1221 MCKINNEY STREET
HOUSTON
TX
77010
US
|
Assignee: |
Hosokawa Yoko Co., Ltd.
Tokyo
MA
Polymer Systems Co., Ltd.
Yokohama-shi
CDF Corporation
Plymouth
|
Family ID: |
34308933 |
Appl. No.: |
10/948418 |
Filed: |
September 23, 2004 |
Current U.S.
Class: |
220/495.06 |
Current CPC
Class: |
B65D 81/3216 20130101;
B65D 25/20 20130101; B65D 25/32 20130101 |
Class at
Publication: |
220/495.06 |
International
Class: |
B65D 025/14 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 24, 2003 |
JP |
2003-331448 |
Claims
What is claimed is:
1. A liquid container comprising a bottomed cylindrical container
main body having a bottom part at a lower end part thereof and
opening at an upper end thereof, and an annular reinforcement part
disposed at an upper end part of said container main body, said
container main body being entirely formed of a flexible thin
film-like member, and said reinforcement part having strength
enough to retain a constant shape in section.
2. A liquid container according to claim 1, wherein said
reinforcement part has a protrusion formed on an outer peripheral
surface thereof and protruding radially outward with respect to an
outer periphery of said container main body.
3. A liquid container according to claim 2, wherein said protrusion
is disposed at an upper end part of an outer peripheral surface of
said reinforcement member.
4. A liquid container according to claim 2, wherein said protrusion
is annularly formed on said reinforcement part over an entire
periphery thereof.
5. A liquid container according to claim 4, wherein said protrusion
is disposed on an upper end part of an outer peripheral surface of
said reinforcement part.
6. A liquid container according to claim 1, wherein said container
main body and said reinforcement part are formed of a resin, and
said reinforcement part is fused to an upper end part of said
container main body.
7. A liquid container according to claim 6, wherein said
reinforcement part has a protrusion formed on an outer peripheral
surface thereof and protruding radially outward with respect to an
outer periphery of said container main body.
8. A liquid container according to claim 7, wherein said protrusion
is disposed at an upper end part of an outer peripheral surface of
said reinforcement member.
9. A liquid container according to claim 7, wherein said protrusion
is annularly formed on said reinforcement part over an entire
periphery thereof.
10. A liquid container according to claim 9, wherein said
protrusion is formed on an upper end part of an outer peripheral
surface of said reinforcement part.
11. A double container comprising a cylindrical outer container
which is open at least at an upper end part thereof, and a bottomed
cylindrical inner container having a bottom part at a lower end
part thereof and opening at an upper end thereof, said inner
container including a bottomed cylindrical container main body
having a bottom part at a lower end part thereof and opening at an
upper end thereof, and an annular reinforcement part disposed at an
upper end part of said container main body, said container main
body being entirely formed of a flexible thin film-like member,
said reinforcement part having strength enough to retain a constant
shape in section, and said reinforcement part having a protrusion
formed on an outer peripheral surface thereof and protruding
radially outward with respect to an outer periphery of said
container main body, said inner container being inserted into said
outer container through the upper end opening part of said outer
container, and said protrusion being placed on an upper end face of
said outer container.
12. A double container according to claim 11, wherein said
protrusion is disposed on an upper end part of an outer peripheral
surface of said reinforcement part.
13. A double container according to claim 11, wherein said
protrusion is annularly formed on said reinforcement part over an
entire periphery thereof.
14. A double container according to claim 13, wherein said
protrusion is disposed on an upper end part of an outer peripheral
surface of said reinforcement part.
15. A double container according to claim 11, wherein said
container main body and said reinforcement part are formed of a
resin, and said reinforcement part is fused to an upper end part of
said container main body.
16. A double container according to claim 15, wherein said
protrusion is disposed on an upper end part of an outer peripheral
surface of said reinforcement part.
17. A double container according to claim 15, wherein said
protrusion is annularly formed on said reinforcement part over an
entire periphery thereof.
18. A double container according to claim 17, wherein said
protrusion is disposed on an upper end part of an outer peripheral
surface of said reinforcement part.
Description
BACKGROUND OF THE INVENTION
[0001] This invention relates to a liquid container suited for
storing an adhesive agent, a coating material and the like, and a
double container using the liquid container as its inner
container.
[0002] In general, a metal-made pail, a metal-made drum, and a
bucket formed of a hard plastic are used in case a necessity arises
for storing an adhesive agent, a coating material or the like.
However, since those containers are high in strength, waste
disposal for those containers is difficult.
[0003] Recently, there has been often used a double container, as a
container for storing adhesive agent or the like, as described in
U.S. Pat. No. 5,727,878. The double container comprises an outer
container and an inner container. The outer container is formed in
a bottomed cylindrical shape having a bottom part at its lower end
part and an opening at its upper end. The outer container is formed
of metal or plastic with a predetermined strength so that it can
retain a constant shape. On the other hand, the inner container is
likewise formed in a bottomed cylindrical shape as in the outer
container but it is formed of a thin film-like member having
flexibility which is composed of synthetic resin. An inverted
U-shaped engagement part is formed on an upper end part of the
inner container. The inner container inserted into the outer
container through the upper end opening part until its engagement
part is engaged with the upper end part of the outer container.
[0004] In the double container thus constructed, an adhesive agent
or the like is stored in the inner container. Therefore, when the
adhesive agent or the like is used up, only the inner container may
be subjected to waste disposal. Since the inner container is
composed of a thin film-like member having flexibility, it can be
crushed into a reduced size. Therefore, it can easily be subjected
to waste disposal.
[0005] Since the inner container used for the double container is
entirely composed of a film-like member having flexibility, it has
the above-mentioned advantage but is has such a disadvantage that
the inner container hardly has a shape retainability for retaining
its own shape constant. Thus, it is encountered with such a problem
that the inner container storing adhesive agent, etc. cannot be
used alone at all. For example, it is practically impossible that
the inner container is removed from the outer container and shifted
into other outer container.
[0006] Moreover, when coating material or adhesive agent having a
high viscosity is agitated, the inner container is twisted by
viscous resistance of the coating material or the like. Then, since
the inner container is slightly reduced in height, the engagement
part is disengaged from an upper end of the outer container.
Furthermore, in case the height of the inner container is smaller
than the depth of the outer container and the bottom part of the
inner container is separated upward from the bottom part of the
outer container, the engagement part is disengaged from the upper
end part of the outer container by weight of the adhesive agent or
the like stored in the inner container and the inner container is
brought into the outer container. Therefore, in case there are
various types of outer containers having different heights, it is
necessary to prepare various types of inner containers which are in
match with the various outer containers having different heights,
thus resulting in high manufacturing costs and high maintenance
fees.
SUMMARY OF THE INVENTION
[0007] In order to solve the above problems, a liquid container
according to the present invention comprises a bottomed cylindrical
container main body having a bottom part at a lower end part
thereof and opening at an upper end thereof, and an annular
reinforcement part disposed at an upper end part of the container
main body, the container main body being entirely formed of a
flexible thin film-like member, and the reinforcement part having
strength enough to retain a constant shape in section.
[0008] It is preferable that the container main body and the
reinforcement part are formed of a resin, and the reinforcement
part is fused to an upper end part of the container main body.
[0009] The reinforcement part preferably has a protrusion formed on
an outer peripheral surface thereof and protruding radially outward
with respect to an outer periphery of the container main body. The
protrusion is preferably annularly formed on the reinforcement part
over an entire periphery thereof and the protrusion is preferably
disposed at an upper end part of an outer peripheral surface of the
reinforcement member.
[0010] In order to solve the above problems, a double container
according to the present invention comprises a cylindrical outer
container which is open at least at an upper end part thereof, and
a bottomed cylindrical inner container having a bottom part at a
lower end part thereof and opening at an upper end thereof, the
inner container including a bottomed cylindrical container main
body having a bottom part at a lower end part thereof and opening
at an upper end thereof, and an annular reinforcement part disposed
at an upper end part of the container main body, the container main
body being entirely formed of a flexible thin film-like member, the
reinforcement part having strength enough to retain a constant
shape in section, and the reinforcement part having a protrusion
formed on an outer peripheral surface thereof and protruding
radially outward with respect to an outer periphery of the
container main body, the inner container being inserted into the
outer container through the upper end opening part of the outer
container, and the protrusion being placed on an upper end face of
the outer container.
[0011] It is preferable that the container main body and the
reinforcement part are formed of a resin, and the reinforcement
part is fused to an upper end part of the container main body.
[0012] The reinforcement part preferably has a protrusion formed on
an outer peripheral surface thereof and protruding radially outward
with respect to an outer periphery of the container main body, and
the protrusion is preferably annularly formed on the reinforcement
part over an entire periphery thereof. Moreover, the protrusion is
preferably disposed on an upper end part of an outer peripheral
surface of the reinforcement part.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1(A) is a plan view showing a first embodiment of a
liquid container according to the present invention.
[0014] FIG. 1(B) is a sectional view taken on line X-X of FIG.
1(A).
[0015] FIG. 1(C) is a view when viewed in a direction as indicated
by an arrow Y of FIG. 1(A).
[0016] FIG. 2(A) is a plan view showing a second embodiment of a
liquid container according to the present invention.
[0017] FIG. 2(B) is a sectional view taken on line X-X of FIG.
2(A).
[0018] FIG. 2(C) is a view when viewed in a direction as indicated
by an arrow Y of FIG. 2(A).
[0019] FIG. 3(A) is a plan view showing a third embodiment of a
liquid container according to the present invention.
[0020] FIG. 3(B) is a sectional view taken on line X-X of FIG.
3(A).
[0021] FIG. 3(C) is a view when viewed in a direction as indicated
by an arrow Y of FIG. 3(A).
[0022] FIG. 4(A) is a plan view showing a fourth embodiment of a
liquid container according to the present invention.
[0023] FIG. 4(B) is a sectional view taken on line X-X of FIG.
4(A).
[0024] FIG. 4(C) is a view when viewed in a direction as indicated
by an arrow Y of FIG. 4(A).
[0025] FIG. 5(A) is a front view showing a fifth embodiment of a
liquid container according to the present invention.
[0026] FIG. 5(B) is a side view of the above.
[0027] FIG. 6 is a plan view, partly omitted, showing a handle used
in the embodiment shown in FIG. 5.
[0028] FIG. 7(A) is a front view showing a sixth embodiment of a
liquid container according to the present invention.
[0029] FIG. 7(B) is a side view of the above.
[0030] FIG. 8(A) is a front view showing a handle used in the
embodiment shown in FIG. 7.
[0031] FIG. 8(B) is a side view of the above.
[0032] FIG. 9(A) is a sectional view showing a first embodiment of
a double container according to the present invention, showing a
state in which the operation for inserting an inner container into
an outer container is undergoing.
[0033] FIG. 9(B) is likewise a sectional view of the above, but
showing another state in which the inserting operation is
finished.
[0034] FIG. 10(A) is a sectional view showing a second embodiment
of a double container according to the present invention, showing a
state in which the operation for inserting an inner container into
an outer container is undergoing.
[0035] FIG. 10(B) is likewise a sectional view of the above, but
showing another state in which the inserting operation is
finished.
[0036] FIG. 11 is a view when viewed in a direction as indicated by
an arrow X of FIG. 10(B).
[0037] FIG. 12 is a plan view showing a third embodiment of a
double container according to the present invention.
[0038] FIG. 13(A) is a view showing a fourth embodiment of a double
container according to the present invention, showing a state
before inserting an inner container into an outer container.
[0039] FIG. 13(B) is a sectional view of the above, but showing
another state in which the inserting operation is finished.
[0040] FIG. 14 is a sectional view taken on line X-X of FIG.
13(B).
[0041] FIG. 15 is a view when viewed in a direction as indicated by
an arrow X of FIG. 14.
[0042] FIG. 16 is a plan view showing a fifth embodiment of a
double container according to the present invention.
[0043] FIG. 17(A) is a sectional view showing a sixth embodiment of
a double container according to the present invention, showing a
stage in which the operation for inserting an inner container into
an outer container is undergoing.
[0044] FIG. 17(B) is likewise a sectional view of the above, but
showing another state in which the inserting operation is
finished.
[0045] FIG. 17(C) is a view when viewed in a direction as indicated
by an arrow X of FIG. 17(B).
[0046] FIG. 18(A) is a view showing a seventh embodiment of a
double container according to the present invention, showing one
state before inserting an inner container into an outer
container.
[0047] FIG. 18(B) is a sectional view of the above, but showing
another state in which the inserting operation is finished.
[0048] FIG. 18(C) is a view when viewed in a direction as indicated
by an arrow X of FIG. 18(B).
[0049] FIG. 18(D) is a sectional view taken on line Y-Y of FIG.
18(C).
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0050] The best mode for carrying out the present invention will be
described hereinafter with reference to the drawings.
[0051] FIG. 1 shows a first embodiment of a liquid container
according to the present invention. A liquid container A according
to this embodiment comprises a container main body 1 and a
reinforcement part 2 which are mutually secured.
[0052] The container main body 1 is composed of a film-like member
having flexibility and comprises a cylindrical part 11 having a
circular shape in section with its axis directing vertically and a
bottom part 12 integrally disposed at a lower end part of this
cylindrical part 11 and adapted to close a lower end part of the
cylindrical part 11. One example of the film-like member composing
the container main body 1 includes a thin film composed of resin
such as, for example, polyethylene, polypropylene or the like. The
thickness of the film-like member may optionally be selected from
the range which satisfies the condition capable of easily crushing
the container main body 1. It is preferable, however, that the
thickness of the film-like member is large enough for the container
main body 1 to retain generally its constant shape when the
container A is placed on a flat floor or the like with the
container main body 1 located under and with the reinforcement part
2 located above in case the container A is in an empty state with
no adhesive agent or the like stored therein. From that view point,
the thickness of the film-like member composing the container main
body 1 is set to, for example, 300 to 1000 .mu.m.
[0053] The reinforcement part 2 is composed of resin such as hard
polyethylene, polypropylene or the like so that it can have a
predetermined strength. The reinforcement part 2 is formed in a
circular annular shape in a plan view. The strength of the
reinforcement part 2 is set such that the reinforcement part 2 can
not only retain its own shape constant but also the shape of the
container body 1 even when the container main body 1 storing
therein adhesive agent, coating material or the like is placed on a
flat floor or the like or even when the container main body 1 is
horizontally lifted up through the reinforcement part 2. The inside
diameter of the reinforcement part 2 may be set smaller than the
inside diameter of the container main body 1. It is preferable,
however, that the inside diameter of the reinforcement part 2 is
set to be generally equal to the inside diameter of the container
main body 1 (cylindrical part 11) as in this embodiment. The
outside diameter of the reinforcement part 2 is extensively larger
than the outside diameter of the container main body 1 so that the
thickness of the reinforcement part 2 is increased, and shape
retainability of the reinforcement part 2 is equal to or more than
a predetermined level. An annular flange part (protrusion) 21
projecting radially outward from an outer peripheral surface of the
reinforcement part 2 is integrally formed on an upper end part of
the reinforcement part 2. A pair of grip parts 22, 22 are
integrally formed on the flange part 21. The pair of grip parts 22,
22 are arranged in such a manner as to be away by 180 degrees from
each other in the peripheral direction of the flange part 21.
[0054] A lower surface of the reinforcement part 2 is secured to an
upper surface of the container main body 1 by suitable means such
as bonding, fusing or the like. The container main body 1 and the
reinforcement part 2 are secured to each other and aligned to each
other in axis. Therefore, an inner peripheral surface of the
reinforcement part 2 forms a same circular cylindrical surface
together with an inner peripheral surface of the container main
body 1. On the other hand, an outer peripheral surface of the
reinforcement part 2 is protruded radially outward from an outer
peripheral surface of the container main body 1. Particularly, the
flange part 21 is greatly protruded from the outer peripheral
surface of the container main body 1.
[0055] The container A thus constructed can be manufactured in the
manner as mentioned hereinafter, for example. That is, the
container main body 1 can be molded by cavity forming or the like,
and the reinforcement part 2 can be molded by extrusion molding.
The container main body 1 is preliminarily molded before the
reinforcement part 2 is molded. At the time of molding of the
reinforcement part 2, the container main body 1 is arranged such
that the upper end face of the container main body 1 contacts an
inner surface of the cavity for molding the lower end face of the
reinforcement part 2. When a molten resin for molding the
reinforcement part 2 is filled in the cavity in that condition, the
upper end part of the container main body 1 is melted. Thereafter,
when the resin filled in the cavity is hardened to mold the
reinforcement part 2, the upper end part of the container main body
1 is fused to the lower surface of the reinforcement part 1. In
case the container main body 1 and the reinforcement part 2 are
fused together in the manner as mentioned above, the resin
composing the container main body 1 is preferably selected from the
same type as the resin composing the reinforcement part 2 so that
easy and reliable fusing can be obtained.
[0056] In the liquid container A constructed in the manner as
mentioned above, the container A can be reduced in capacity by
press-crushing the container main body 1 in its axial direction.
Therefore, the container A can easily be subjected to waste
disposal. Since the reinforcement part 2 retains the shape of the
container main body 1, particularly, the cylindrical part 11 so
that the cylindrical part 11 is prevented from deforming heavily,
the container main body 1 is not greatly deformed even if the
container A storing therein adhesive agent or the like is placed on
a horizontal floor surface or the like, or lifted up through the
grip part 22. Therefore, the container A can be used alone.
Moreover, since the reinforcement part 2 has a sufficient strength
and shape retainability, a cap member can be fitted, either
internally or externally, to the upper end opening part or upper
end outer peripheral part (outer peripheral part of the flange part
21 in this embodiment) of the reinforcement part 2. By this, the
upper end opening part of the container A can be tightly
closed.
[0057] Other embodiments of the present invention will now be
described. In the embodiments to be described hereinafter, only the
construction which is different from the above embodiment is
described, and identical components are denoted by identical
reference numerals and description thereof are omitted.
[0058] FIG. 2 shows a second embodiment of a liquid container
according to the present invention. In a liquid container B of this
embodiment, a cylindrical part 11 of a container main body 1 is
formed in a regular square shape in section, and a bottom part 12
of the container main body 1 and a reinforcement part 2 are each
formed in a regular square shape in section corresponding to the
shape of the cylindrical part 11.
[0059] FIG. 3 shows a third embodiment of a liquid container
according to the present invention. In a liquid container C of this
embodiment, a pair of engagement parts 23, 23 are formed instead of
the pair of grip parts 22, 22. The engagement part 23 is formed on
an outer peripheral surface of the reinforcement part 2 at the
lower side of the flange part 21. The engagement part 23 comprises
a shaft part 23a protruding radially outward from the outer
peripheral surface of the reinforcement part 2, and a head part 23b
formed on a front end part of the shaft part 23a and having a
larger diameter than the shaft part 23a. The pair of engagement
parts 23, 23 are arranged on the reinforcement part 2 in such a
manner as to be away by 180 degrees from each other in the
peripheral direction of the reinforcement part 2. Moreover, the
pair of engagement parts 23, 23 are arranged such that their axes
are passed through the center of the reinforcement part 2 and
aligned with each other. A flat part 21a is formed on each of those
parts of the flange part 21 opposing the engagement parts 23, 23.
Owing to this arrangement, the front end part of the shaft part 23a
is allowed to protrude radially outward from an outer peripheral
surface (flat part 21a) of the flange part 21.
[0060] FIG. 4 shows a fourth embodiment of a liquid container
according to the present invention. A liquid container D of this
embodiment is a modification of the above-mentioned liquid
container C. In this liquid container D, a container main body 1
and a reinforcement part 2 are each formed in a regular square
shape in section. Engagement parts 23, 23 are respectively arranged
at central parts of opposing two sides of all the four sides of the
reinforcement part 2. A front end part and a head part 23b of the
shaft parts 23a of each engagement part 23 are allowed to protrude
radially outward from an outer peripheral surface of the flange
part 21.
[0061] FIG. 5 shows a fifth embodiment of a liquid container
according to the present invention. A liquid container E of this
embodiment is the above-mentioned container C but with a handle 3
additionally applied thereto. The handle 3 is composed of a
relatively flexible resin. As shown in FIG. 6, the handle 3 is
formed in a belt-like shape. The length of the handle 3 is longer
than the outside diameter of a flange part 21 of a reinforcement
part 2. Two pairs of circular holes 31, 31 are formed, one pair
each, on opposite end parts of the handle 3. The circular holes 31,
31 forming the pair is arranged away from each other in the
longitudinal direction of the handle 3. Each circular hole 31 has
the inside diameter generally equal to the outside diameter of a
shaft part 23a of an engagement part 23. A slit 32 whose opposite
end parts are in communication with the circular hole 31 is formed
between the circular holes 31, 31. The width of the slit 32 in its
natural state (width of the slit 32 with no external force acting
thereon the end parts of the handle 3) is smaller than the outside
diameter of the shaft part 23a. However, since the slit 32 is such
dimensioned that the opposite end parts of the handle 3 are
deformed to enlarge the width of the slit 32 so that a head part
23b of the engagement part 23 is allowed to pass through the inside
of the slit 32. Therefore, by allowing the head part 23b to pass
through the slit 32, the shaft part 23a can penetrate through the
slit 32. By moving the handle 3 toward the central part side from
the opposite end part sides in that condition, the shaft part 23a
can be fitted into the circular hole 31 which is located at the end
part side of all the two circular holes 31, 31. By fitting the
circular holes 31, 31 formed in the opposite end parts of the
handle 3 in the manner as just mentioned to the shaft parts 23a,
23a, respectively, the handle 3 is attached to the container C in
its inverted U-shape as shown in FIG. 5(A).
[0062] In the container E thus constructed, by gripping the handle
3, the container E can easily be carried. Moreover, since the shaft
part 23a is turnably fitted to the circular hole 31, at that time
of taking out the adhesive agent, or the like stored in the
container E, the adhesive agent or the like can easily be taken out
by slanting the handle 5 in such a manner as indicated by an
imaginary line of FIG. 5(B). If the handle 3 is preliminarily
turned until its central part in the longitudinal direction is
abutted with the outer peripheral surface of the container main
body 1, the adhesive agent or the like can more easily be taken
out.
[0063] FIG. 7 shows a sixth embodiment of a liquid container
according to the present invention. A liquid container F of this
embodiment is the above-mentioned container C but with a handle 4
additionally applied thereto. The handle 4 is composed of a rod
which is made of steel. As shown in FIG. 8, the handle 4 is formed
in an inverted U-shape. A hook part 41 is formed on each of the
opposite end parts of the handle 4. This hook part 41 has a
generally 3/4 arcuate shape, and the remaining generally 1/4
arcuate part of the hook part 41 is open. The shaft part 23a can be
inserted into the hook part 41 through the opening part by
elastically deforming the hook part 41 and spreading the opening
part. By inserting the shaft parts 23a, 23a into the two hook parts
41, 41, respectively, the container F can be hand-carried through
the handle 4. Moreover, since the inside diameter of the hook part
41 is set to be generally equal to the outside diameter of the
shaft part 23a and the shaft part 23a is turnably inserted in the
hook part 41, the handle 4 can be turned about the shaft parts 23a,
23a as in the case with the handle 3 in the container E of the
above-mentioned embodiment.
[0064] FIG. 9 shows a first embodiment of a double container
according to the present invention. A double container G of this
embodiment includes an outer container 5, and the above-mentioned
container A as an inner container inserted in the outer container
5. The outer container 5 is composed of a metal plate. The outer
container 5 includes an outer cylindrical part 51 having a circular
shape in section with its axis directing vertically and a bottom
part 52 disposed at a lower end part of the outer cylindrical part
51. The outer cylindrical part 51 has a constant inside diameter.
The inside diameter of the outer cylindrical part 61 is set to be
generally equal to the outside diameter of a reinforcement part 2
(outside diameter of the reinforcement part 2 at the lower side of
the flange part 21). The depth of the outer cylindrical part 51 is
set to be slightly larger than the distance between a lower surface
of the flange part 21 and a lower surface of the container main
body 1 of the container A. An annular support part 51a horizontally
protruding radially outward is formed on an upper end part of the
outer cylindrical part 51. The outside diameter of this annular
support part 51a is set to be generally equal to the outside
diameter of the flange part 21.
[0065] The container A as the inner container is inserted in the
outer container 5 through its upper end opening part. A part of the
reinforcement part 2 at a lower side of the flange part 21 is
removably fitted an upper end inner peripheral surface of an outer
tube 5, and the flange part 21 is placed on the annular support
part 51a over its entire periphery. A liquid such as adhesive
agent, coating material or the like is stored in the container
A.
[0066] In the double container G thus constructed, when the
adhesive agent or the like stored in the container A is used up,
only the container A may be subjected to waste disposal. Therefore,
the container A may easily be subjected to waste disposal as
mentioned above. Moreover, since the container A can be handled
alone, the container A can be taken out of the outer container 5
and shifted into other outer container, for example. At that time,
since the flange parts 22, 22 of the container A are protruded
radially outward from the annular support part 51a of the outer
container 5, shifting of the container A can easily be performed by
holding the flange parts 22, 22 with hands. Moreover, since the
reinforcement part 2 having rigidity is supported by the annular
support part 51a, the entire container A is never brought into the
outer container 5 even if the cylindrical part 11 of the container
A is twisted at the time of agitating the adhesive agent or the
like. For the same reason, even in case the depth of the outer
container 5 is larger than the height of the container A and the
bottom part 12 of the container A with the adhesive agent or the
like stored therein does not contact the bottom part 52 of the
outer container 5, the entire container A can be prevented from
being brought into the outer container 5. Therefore, it is no more
required to prepare various kinds of containers A having different
heights, and the manufacturing costs and maintenance fees can be
reduced to that extent.
[0067] FIGS. 10 and 11 show a second embodiment of a double
container according to the present invention. In a double container
H of this embodiment, an outer container 5A is used instead of the
outer container 5 of the above-mentioned double container G. The
outer container 5A is composed of a corrugate board. The depth of
the outer container 5A is set to be generally equal to or slightly
smaller than the distance between a lower surface of the flange
part 21 and a lower surface of the bottom part 12 of the container
A. Of course, the depth of the outer container 5A may be set to be
larger than the above-mentioned distance. The outer cylindrical
part 51 of the outer container 5 is formed in a regular square
shape in section. The bottom part 52 is also formed in a regular
square shape corresponding to the shape of the outer cylindrical
part 51. The interval (internal dimension) between opposing two
sides of the outer cylindrical part 51 is set to be generally equal
to the outside diameter of a cylindrical part 11 of the container
A. The external dimension of opposing two sides of the outer
cylindrical part 51 is set to be slightly smaller than the outside
diameter of the flange part 22.
[0068] The container A as an inner container is inserted in the
outer container 5A through its upper end opening part. In that
condition, a part of a reinforcement part 2 at a lower side of the
flange part 21 is contacted with the central part of the inner
peripheral surface of each of four sides of the outer container 5A,
and the flange part 21 is placed on the central part of the upper
surface of each of four sides of the outer container 5A. All the
remaining construction of the double container H is same as the
above-mentioned double container G and description thereof is
omitted.
[0069] FIG. 12 shows a third embodiment of a double container
according to the present invention. A double container I of this
embodiment is a modification of the double container H. In this
double container I, a container B instead of the container A is
used as an inner container. A part of the container B at a lower
side of the flange part 21 of the reinforcement part 2 is tightly
fitted to an upper end part of the outer container 5A with almost
no gap left therebetween.
[0070] FIGS. 13 through 15 show a fourth embodiment of a double
container according to the present invention. In a double container
J of this embodiment, an outer container 5B is used instead of the
outer container 5A, and a container C is used as an inner
container. The outer container 5B is a modification of the outer
container 5A. A receiving recess 53 extending downward from the
upper end part of each of a pair of opposing sides of the outer
cylindrical part 51 is formed in the above-mentioned upper end
part. The receiving recess 53 includes a straight groove part 53a
and a circular hole part 53b. The straight groove part 53a is
arranged at the central part of the upper end face of the outer
cylindrical part 51. The straight groove part 53a extends downward
from the upper end face of the outer cylindrical part 51 with a
constant width. The width of the straight groove part 53a is set to
be slightly smaller than the outside diameter of a shaft part 23a
of an engagement part 23 of the container C. Therefore, it is
practically impossible to insert the shaft part 23a downward into
the straight groove part 53a through the upper end opening part as
long as the straight groove part 53a of the outer cylindrical 51 is
in a natural state with no external force is acted on the upper end
part of the side of the external cylindrical part 51 in which the
straight groove part 53a is formed. However, by applying an
external force to that particular side of the external cylindrical
part 51 and spreading the width of the straight groove part 53a,
the shaft part 23a can be inserted into the straight groove part
53a through the upper end opening part. The circular hole part 53b
is arranged such that its axis passes through the center of the
outer container 5B and its axis is aligned with the axis of the
circular hole part 53b which is formed in the other of the pair of
sides. An upper side part of the circular hole part 53b is in
communication with a lower end part of the straight groove part
53a. The inside diameter of the circular hole part 53b is set to be
generally equal to the outside diameter of the shaft part 23a of
the container C.
[0071] The container C is inserted in the outer container B through
its upper end opening part. A flange part 21 of the container C is
placed on an upper end face of the outer container 5B. The shaft
part 23a is fitted into the circular hole part 53b through the
straight groove part 53a. By this, the outer container 5B and the
container C are integrated.
[0072] FIG. 16 shows a fifth embodiment of a double container
according to the present invention. In a double container K of this
embodiment, the container D shown in FIG. 4 is used as an inner
container, and a part of a reinforcement part 2 of the container D
at a lower side of a flange part 21 of the reinforcement part 2 is
tightly fitted to the upper end part inner peripheral surface of
the outer container 5B over its entire periphery with almost no gap
left therebetween. All the remaining construction is same as the
above-mentioned double container J.
[0073] FIG. 17 shows a sixth embodiment of a double container
according to the present invention. In a double container L of this
embodiment, the outer container 5C is used as an outer container
and the container A shown in FIG. 1 is used as an inner container.
The outer container 5C is open not only at its upper end but also
at its lower end, and it does not have a bottom part. The height of
the outer container 5C is set to be larger than the distance
between a lower surface of a flange part 21 of the container A and
a lower surface of a container main body 1. Therefore, when the
flange part 21 of the container A is placed on the upper end face
of the outer container C, the bottom part 12 of the container main
body 1 is located at the upper side of the lower surface of the
outer container 5C.
[0074] FIG. 18 shows a seventh embodiment of a double container
according to the present invention. In a double container M of this
embodiment, the outer container 5D is used as an outer container
and the container C shown in FIG. 3 is used as an inner container.
In this outer container 5D, a receiving recess 53 having a straight
groove part 53a and a circular hole part 53b is formed in one side
part and the other side part of the upper end part of the outer
container 5C. Therefore, in this container C, when the flange part
21 is placed on the upper surface of the outer container 5D, a
shaft part 23a of an engagement part 23 is fitted into the circular
hole part 53d through the straight groove part 53a.
* * * * *