JP2004001837A - Multi-chamber container element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-chamber container element in a small number of manufacturing processes at a low cost, which has an inner cavity sectioned into numerous chambers via a bulkhead, is not formed with seams degrading the appearance and can be crushed into a uniform thickness on its lower end. <P>SOLUTION: At least a part of a certain range in the peripheral direction is formed as a three-layered part 5 including an inner layer 2, an intermediate layer 3 unpeelably laminated on the inner layer 2 and an outer layer 4 peelably laminated on the intermediate layer 3. The remaining range is constituted as an annular cross section formed on a two-layered part 6 including the inner layer 2 and and the outer layer 4 unpeelably laminated on the inner layer 2. The intermediate layer 3 is peeled from the outer layer 4 of the three-layered part 5, and the inner cavity 11 can be divided via the bulkhead 7 formed of the intermediate layer 3 and the inner layer 2. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a multi-chamber container element which is a main member of a multi-chamber container in which a plurality of storage chambers for independently storing various kinds of contents used together by mixing or the like at the time of use are provided. is there.
[0002]
[Prior art]
As containers for cosmetics, adhesives, etc., multi-chamber containers, which have a number of storage rooms, each having a different color and properties, mixed together at the time of use, and used together, and each containing various contents independently, are provided. Are known.
[0003]
In the case of a tube container, this multi-chamber container cuts a tube (hereinafter, referred to as a multi-chamber container body) which is a cross-sectional container body having a large number of chambers into a predetermined length, and cuts the multi-chamber container. It is manufactured by attaching a head portion having a mouthpiece portion for discharging each content to the upper end of the container body, and sealing the lower end by means such as welding.
[0004]
Conventionally, as a method for manufacturing a multi-chamber container body which is a main member of this multi-chamber container,
(1) A method in which a large number of molded container elements are integrally connected by means such as adhesion, and (2) A large number of molded elements are welded to the inner peripheral surface of one molded container element by means such as welding. A method of mounting a partition for partitioning a room, and the like, have been proposed.
[Problems to be solved by the invention]
[0005]
However, the above-mentioned prior art (1) has the following problems.
1) Since a step of connecting the container bodies by means such as bonding is required, the cost is increased.
2) The joint of the connected container body is exposed to the outside, so that the appearance is bad. In addition, it is conceivable to cover the joint with a sheet-like decorative material, but in this case, a new material and process are required. This increases the cost.
[0006]
In addition, the above-described related art (2) has the following problems.
1) Since a step of forming a partition and mounting the partition on the inner surface of the container body is required, the cost increases.
2) When the lower end of the container body is crushed for sealing, the thickness of the lower end becomes non-uniform due to the influence of the partition wall, so that welding of the seal portion becomes troublesome.
[0007]
Therefore, the present invention has been made in order to solve the above-mentioned problem, and it is possible to obtain a multi-compartment container body in which the inner space is partitioned into a number of chambers by a partition by a single molding, A technical object is to form a joint that impairs the appearance of the body and to crush the lower end of the multi-chamber container body to a uniform thickness. The purpose is to do.
[0008]
[Means for Solving the Problems]
In the present invention for solving the above problems, the means of the invention according to claim 1 is:
At least a part of a certain range along the circumferential direction, the inner layer, an intermediate layer that is non-peelable laminated to the inner layer, and formed into a three-layer part consisting of an outer layer that is releasably laminated to the intermediate layer,
Forming the remaining area in a two-layer portion including an inner layer and an outer layer that is non-peelably laminated to the inner layer,
Forming an annular cross section with the three-layer part and the two-layer part,
The intermediate layer is separated from the outer layer of the three-layer portion, and the inner space can be divided by the partition formed by the intermediate layer and the inner layer,
It is in.
[0009]
According to the first aspect of the present invention, an inner layer, an intermediate layer that is non-peelable on the inner layer, and a releasable layer on the intermediate layer are formed on at least a part of the annular cross-section along the circumferential direction. The outer layer is formed in a three-layer part composed of an outer layer and a middle layer. The inner layer to be laminated forms a partition that partitions the inner space of the multi-chamber container body, and the inner space can be divided into a number of chambers.
[0010]
In addition, by appropriately setting the formation range of each three-layer portion and the shape of the partition wall, each chamber can be divided into a desired cross-sectional area ratio. It is possible to easily manufacture a multi-chamber container provided with a storage chamber capable of separately storing contents to be mixed and used, for example, an adhesive composed of a main agent and a curing agent at a predetermined ratio.
[0011]
In this multi-chamber container body, an intermediate layer is formed on the outer peripheral surface of the inner layer along the circumferential direction at a predetermined interval and width range, and an outer layer is formed on the outer peripheral surface of the inner layer where each intermediate layer and the intermediate layer are not laminated. By the co-extrusion molding in which the layers are formed, it is possible to produce by a single molding without forming a seam that impairs the appearance.
[0012]
When sealing the lower end of the multi-chamber container body, when the peeled intermediate layer of this part and the inner layer laminated on this intermediate layer are pushed back to the original position, it returns to a simple annular cross section without partition walls, so the lower end is It can be crushed to a uniform thickness.
[0013]
Furthermore, since the multi-compartment container body of the present invention can be handled with a simple annular cross section without a partition wall before the intermediate layer is peeled off, the surface of the outer layer is decorated by printing, hot stamping or the like. In this case, the existing decorating equipment can be used as it is, and the cost required for decorating is not particularly increased.
[0014]
According to a second aspect of the present invention, in the first aspect of the present invention, the formation range of the three-layer portion is set to one of the left and right half circumferences, and the intermediate layer is separated from the outer layer of the three-layer portion. The inner space can be divided into two by a partition formed by the inner layer.
[0015]
When the range of the three-layer portion located on one of the left and right sides is formed narrower than the range of the two-layer portion located on the other side, and the inner space of the multi-chamber container body is divided into two at a desired cross-sectional area ratio, the partition wall Since the length of the multi-chamber container body is shorter than the half circumference of the multi-chamber container body, when the lower end of the multi-chamber container body is crushed from the left and right to deform the cross section near the lower end of the multi-chamber container body into a long flat shape in the front and rear, The partition is pulled by one side, and one of the chambers is forced to have a more closed shape than the other chamber, and it becomes difficult to maintain a desired cross-sectional area ratio in a cross section closer to the lower end.
[0016]
According to the second aspect of the present invention, since the formation range of the three-layer portion is one of the left and right half circumferences and the length of the partition wall is equal to the half circumference of the multi-chamber container body, When the lower end of the body is crushed from the left and right to deform the cross section closer to the lower end of the multi-compartment container body into a long flat shape back and forth, the partition is not pulled toward the three-layer portion side, and the partition is It is possible to keep a desired cross-sectional area ratio at a position to be maintained.
[0017]
According to a third aspect of the present invention, the formation range of the three-layer portion of the first aspect of the invention is set to a fixed range along the circumferential direction of both side portions, and the intermediate layer is separated from the outer layer of the three-layer portion, The partition formed by the intermediate layer and the inner layer allows the inner space to be divided into three.
[0018]
According to the third aspect of the present invention, the two partitions are formed to face each other by forming a predetermined range along the circumferential direction of both side portions in the three-layer portion, and the multi-chamber container body is formed by these partitions. Is divided into three rows in a row. When the multi-chamber container manufactured by this multi-chamber container body is pressed from both sides, the respective housing chambers are evenly pressed and the contents housed in the respective housing chambers Objects can be extruded simultaneously.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment having a tube structure of the multi-compartment container body 1 of the present invention will be described with reference to the drawings.
FIG. 1A is a cross-sectional view showing the first embodiment, in which a multi-chamber container body 1 has an inner layer 2 on the left half circumference, an intermediate layer 3 that is laminated on the inner layer 2 in a non-peelable manner, and an intermediate layer 3. An annular cross-section formed in a three-layer part 5 composed of an outer layer 4 that is removably laminated to the inner layer 2 and a right half circumference formed of an inner layer 2 and an outer layer 4 that is non-removably laminated to the inner layer 2 Having.
[0020]
When the multi-compartment container 21 shown in FIG. 4 is manufactured using the multi-compartment container body 1 and the intermediate layer 3 is peeled inward from the outer layer 4 of the three-layer portion 5, as shown in FIG. The layer 3 and the inner layer 2 laminated on the intermediate layer 3 form a curved partition wall 7, and the partition wall 7 allows the inner space 11 to be located at a predetermined sectional area ratio on the left side with the chamber 12 a located on the left side and on the right side. And a chamber 12b.
[0021]
When the lower end of the multi-compartment container body 1 is crushed from the left and right to form the seal portion of the multi-compartment container 21, the cross section near the lower end of the multi-compartment container body 1 is pressed from the left and right as shown in FIG. As a result, the partition 7 is deformed into a long and flat shape as shown in FIG. 2 (B), and the partition 7 is deformed into a gentle curved shape along the major axis of the flat cross section without being pulled right and left. The sectional area ratio with the chamber 12b is maintained.
[0022]
FIG. 3A is a cross-sectional view showing a second embodiment of the multi-compartment container body 1. The multi-compartment container body 1 includes an inner layer 2 and a predetermined range along the circumferential direction of the left portion. The inner layer 2 is formed in a three-layer portion 5a including an intermediate layer 3a that is non-peelably laminated on the inner layer 2 and an outer layer 4 that is releasably laminated on the intermediate layer 3a. And an intermediate layer 3b non-peelable on the inner layer 2 and an outer layer 4 releasable on the intermediate layer 3b. And an outer layer 4 that is non-peelable.
[0023]
When the multi-chamber container 21 is manufactured using the multi-chamber container body 1, when the intermediate layer 3a is separated from the outer layer 4 of the three-layer portion 5a and the intermediate layer 3b is separated from the outer layer 4 of the three-layer portion 5b, respectively, FIG. As shown in FIG. 2B, the inner space 11 is located at the center between the chamber 12a on the left side and the center 12a by the partition wall 7a formed by the intermediate layer 3a and the inner layer 2 and the partition wall 7b formed by the intermediate layer 3b and the inner layer 2. Chamber 12b and a chamber 12c located on the right side.
FIG. 3B shows a case where the intermediate layer 3a and the intermediate layer 3b are peeled in a state where they are inverted and deformed inward, respectively. In this state, the chambers 12a, 12b and 12b are separated. 12c is divided into 1: 2: 2 in sectional area ratio. The cross-sectional area ratio is set according to the storage ratio of each content stored in the multi-chamber container 21.
[0025]
The multi-compartment container body 1 in each of the above embodiments can be formed by known co-extrusion molding. The material used for each layer is a combination of resins having high compatibility so that the inner layer 2 and the intermediate layer 3 and the inner layer 2 and the outer layer 4 are bonded at the time of molding. Is a combination of resins having low compatibility so that the resin does not adhere during molding.
[0026]
Further, the inner layer 2 and the outer layer 4 forming the body 22 of the multi-compartment container 21 are preferably made of a resin excellent in moldability, cost, mechanical properties, flexibility, and chemical stability. It is necessary that the resin is a non-permeable resin so that the components of the contents stored in each storage chamber can be prevented from permeating into other storage chambers.
[0027]
As an example of a material satisfying this condition, the inner layer 2 is made of a polyolefin adhesive resin such as Admer (trade name) or Modic (trade name), the outer layer 4 is made of an olefin resin, and the intermediate layer 3 is made of ethylene vinyl alcohol. A polymer (EVOH) and a nylon resin are preferred.
[0028]
Next, an embodiment of a method of manufacturing the multi-chamber container 21 using the multi-chamber container body 1 described above will be described with reference to FIG.
The multi-compartment container body 1 extruded from the die head by the extruder is cut into a predetermined length suitable for the body 22 of the multi-compartment container 21 (FIG. 4A).
[0029]
Next, a shape-retaining jig is inserted into the multi-compartment container body 1, and decoration is performed on the surface of the multi-compartment container body 1 by printing, hot stamping or the like while preventing deformation.
[0030]
After decoration, the jig for shape retention is pulled out, the intermediate layer 3 is separated from the outer layer 4, and the inner space of the multi-compartment container body 1 is divided into a chamber 12a and a chamber 12b having a predetermined sectional shape. A head part 25 integrally provided with a mouthpiece part 24 for pouring out contents at the upper end of the chamber container body 1 is welded and fixed by an injection molding method or the like (FIG. 4B).
[0031]
Next, after the cap 26 for closure is fitted to the mouthpiece 24, the multi-compartment container body 1 is set in an inverted posture so that the lower end 23 is located on the upper side, and a predetermined amount is inserted from the lower end 23 into each of the chambers 12a and 12b. The contents are filled (FIG. 4C).
[0032]
Finally, the lower end 23 is crushed from the left and right and sealed by welding to complete the multi-chamber container 21 (FIG. 4D).
[0033]
In the above embodiment, the case of a tube container was described as the multi-chamber container.However, the multi-chamber container body of the present invention is not limited to a tube container, and its shape is not limited to a tube container. It can also be formed into a bag-like container.
[0034]
【The invention's effect】
The present invention has the following effects because it is configured as described above.
In the invention according to claim 1, when the intermediate layer is peeled inward from the outer layer of each of the three-layer portions formed in at least a part of a predetermined range along the circumferential direction, the inner layer laminated on the intermediate layer and the intermediate layer Form a partition, and the partition can divide the inner space into a number of chambers.
[0035]
In addition, by appropriately setting the formation range of the three-layer portion and the shape of the partition wall, the divided chambers can be formed to have a desired cross-sectional area ratio. It is possible to easily manufacture a multi-chamber container provided with a storage chamber in which articles can be sorted and stored at a fixed ratio.
[0036]
And since it has a simple cross-sectional configuration in which an intermediate layer is partially laminated between an inner layer and an outer layer, it can be formed by a single co-extrusion molding without forming a seam that impairs the appearance, and the production cost can be reduced. Can be reduced.
[0037]
Furthermore, when the peeled intermediate layer at the lower end of the multi-chamber container body and the inner layer laminated on this intermediate layer are pushed back to the original position, it returns to a simple annular cross section, so that the lower end can be crushed to a uniform thickness. As a result, a stable, smooth and reliable seal can be achieved.
[0038]
According to the second aspect of the present invention, it is possible to obtain a multi-chamber container body that can maintain a cross-sectional area ratio of two right and left chambers in a cross section near a lower end portion that is deformed flat when the lower end is crushed for sealing. Therefore, the cross-sectional area ratios of the left and right storage chambers are equal over the entire height range, and a multi-chamber container suitable for pushing out the contents can be easily manufactured.
[0039]
According to the third aspect of the present invention, a multi-chamber container body in which three chambers are partitioned in a horizontal row can be obtained by the two partition walls formed in the opposed posture, and therefore, by a pressing operation from both sides. This makes it possible to easily manufacture a multi-chamber container capable of simultaneously extruding the contents accommodated in each accommodation chamber.
[Brief description of the drawings]
1A and 1B are cross-sectional views showing a first embodiment of the present invention, wherein FIG. 1A shows a normal state, and FIG. 1B shows a state in which the inner space is divided.
FIGS. 2A and 2B are cross-sectional views of the embodiment shown in FIG. 1 near a lower end, where FIG. 2A shows a state before pressing and FIG.
3A and 3B are cross-sectional views showing a second embodiment of the present invention, wherein FIG. 3A shows a normal state, and FIG. 3B shows a state in which the inner space is divided.
FIG. 4 is an explanatory view showing an example of a method for manufacturing a multi-chamber container using the multi-chamber container body of the present invention.
[Explanation of symbols]
1; Multi-chamber container body 2; Inner layer 3; Intermediate layer 3a; Intermediate layer 3b; Intermediate layer 4; Outer layer 5; Three-layer part 5a; Three-layer part 5b; Three-layer part 6; Two-layer part 7; Room 11b; Room 12b; Room 12c; Room 21; Multi-chamber container 22; Body 23; Lower end 24; Mouth cylinder 25; Head 26;

Claims (3)

An inner layer (2), an intermediate layer (3) non-peelable on the inner layer (2), and an outer layer releasable on the intermediate layer (3) And (4) a two-layer part (5) comprising the inner layer (2) and the outer layer (4) non-peelably laminated on the inner layer (2). 6) The partition having an annular cross section formed in 6), wherein the intermediate layer (3) is peeled off from the outer layer (4) of the three-layer portion (5) to form the intermediate layer (3) and the inner layer (2). (7) A multi-chamber container body made of a synthetic resin capable of dividing the inner space (11). One of the left and right half circumferences is a three-layer part (5), and the intermediate layer (3) is peeled off from the outer layer (4) of the three-layer part (5), and the intermediate layer (3) and the inner layer (2) are separated. The synthetic resin multi-chamber container element according to claim 1, wherein the inner space (11) can be divided into two parts by a partition wall (7) formed by the member. A certain range along the circumferential direction of both side portions is defined as a three-layer part (5), and the intermediate layer (3) is separated from the outer layer (4) of the three-layer part (5), and the intermediate layer (3) and the inner layer are separated. 2. The synthetic resin multi-chamber container body according to claim 1, wherein the inner space (11) can be divided into three parts by a partition wall (7) formed by (2).

Images