JPH0649315U - Paper container - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a paper container used in an environment where it is easily wet, such as a bathroom, and an object thereof is to prevent water from seeping into the paper material from the outside. [Structure] A paper material 12 is formed into a pack so that the contents can be filled therein, and the end portions 12-1 to 12-1 of the paper material 12 are formed.
In a paper container formed by joining 2-4 at a predetermined joining portion, a pair of end portions 12-1 and 12-2, 12-3 and 12-4 of the joining paper material 12 face each other. The paper material 12 is bent and formed so that the facing portions 22 and 23 are liquid-tightly surrounded by the bent paper material 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paper container, and more particularly to a paper container used in an environment where it is easily wet, such as a bathroom.

[0002]

[Prior art]

 For example, a paper container 1 as shown in FIG. 5 is known as a container for milk, juice, liquor and the like.

The paper container 1 can store contents for a long period of time, can be manufactured at a relatively low cost, and is excellent in economy. Further, since it is made of paper, it can be easily discarded, and since various printing can be performed on the surface portion, it has a display effect, and its utilization has been increasing in recent years as a container for various contents.

This paper container 1 has a waterproof structure in which low density polyethylene, aluminum foil or the like is laminated on a base paper so that the liquid content filled inside does not leak outside. 2 is used. Then, the paper container 2 is formed by molding the paper material 2 into a pack shape so that the contents can be filled therein.

In addition, when the paper material 2 is formed into a pack and the paper container 1 is formed, inevitably a portion is joined to the end portion of the paper material 2. It is desirable for the appearance that the joint portion 3 at the end portion does not appear outside as much as possible. Therefore, as shown in FIG. 6 (A), the joint portion of the end portion 2a has a joint portion on its side at the corner portion 3 of the paper container 1, and as shown in FIG. 6 (B). The joint at the bottom was selected at the bottom 4 of the paper container 1.

Incidentally, FIG. 6 (A) shows a cross section taken along the line AA in FIG. 5, and FIG. 6 (B) shows a cross section taken along the line BB in FIG.

[0007]

[Problems to be solved by the device]

 As described above, the conventional paper container 1 is mainly used as a container for beverages such as milk, juice and alcohol. However, since the paper container 1 has various advantages such as excellent economical efficiency and convenience of easy disposal as described above, its use as a container other than beverages has begun to be considered. As one of them, it is considered to use a paper container as a container for shampoo or the like (for example, Japanese Patent Application No. 4-4711, etc.).

However, when the paper container 1 is used as a shampoo container with the same structure as the conventional one, the following problems occur. That is, a shampoo container is generally placed in a bathroom or the like and has a peculiarity such as being covered with water or having water droplets attached to the surface of the container.

However, as shown in FIGS. 6 (A) and 6 (B), in the conventional paper container 1, the end surface 2b of the paper material 2 is exposed to the outside at the joining position. Water penetrates into the paper material 2 and the layers such as low density polyethylene and aluminum foil laminated on the paper peel off, and the strength of the paper container 1 decreases. was there.

On the front surface and the back surface of the paper material 2, the paper as a base material is covered with low density polyethylene or the like to have a waterproof structure, but on the end surface 2 b of the paper material 2, the paper is not exposed to the outside. This is because it is exposed and does not have a waterproof structure.

The present invention has been made in view of the above points, and an object thereof is to provide a paper container capable of preventing water from penetrating into the paper material from the outside.

[0012]

[Means for Solving the Problems]

 In order to solve the above problems, in the present invention, a paper material is formed into a pack shape so that the contents can be filled inside, and the paper material is formed by joining the ends of the paper material at a predetermined joining portion. In the container-making container, the paper material is bent and formed so that a pair of ends of the paper materials to be joined face each other, and the facing portion is configured to be liquid-tightly surrounded by the bent paper material. It is a feature.

[0013]

[Action]

 By configuring the paper container as described above, the facing part where external liquid such as water may enter is surrounded by the bent paper material, so the external liquid can be prevented from entering the paper material. Therefore, it is possible to improve the reliability of the paper-made container because the strength of the paper-made container is reduced and the peeling can be prevented in the case of a multi-layered paper material.

[0014]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a vertical cross-sectional surface of a paper container 10 according to an embodiment of the present invention, and FIG. 2 shows an external view of the paper container 10.

As shown in the respective drawings, the paper container 10 is formed by packing the paper material 12 into a pack shape so that the contents can be filled therein, and the end portions 12-1, 12-2, 12-2, 12-3 and 12-4 are joined at predetermined joining portions 13 and 14. In this embodiment, the joint portions 13 and 14 are selected at the top and bottom of the paper container 10. A stopper 15 is fixed to the upper portion of the paper container 10, and a cap 15a is attached to the stopper 15.

The paper material 12 constituting the paper container 10 has a laminated structure in which a plurality of layers are laminated using paper as a base material. Here, FIG. 4 shows an enlarged cross section of the end portions 12-1 to 12-4 of the paper material 12, and the reason why water and the like penetrate into the paper material 12 will be described. Since each of the end portions 12-1 to 12-4 has the same structure, only the end portion 12-1 will be illustrated and described.

The paper material 12 shown in FIG. 1 has, for example, a low density polyethylene (LDPE) layer 16, a paper 17, an LDPE layer 18, an aluminum foil layer 19, a polyethylene terephthalate (PET) layer 20, and an LDPE layer 21 from the front side. Has a structure that is sequentially multilayered. The structure of the paper material 12 is not limited to this, and paper materials having various structures can be applied depending on the contents to be filled. For example, depending on the contents, application of a three-layer paper material in which a low-density polyethylene (LDPE) layer 16, a paper 17, and an LDPE layer 18 are laminated from the front side may be considered.

In the paper material 12 having the above-described structure, the LDPE layers 16, 18, 21, the aluminum foil layer 19 and the PET layer 20 except the inner paper 17 of each of the constituent layers have waterproofness, 17 allows water to penetrate. In the end faces 12a-1 to 12a-4 of the paper material 12, the end faces of the layers 16 to 21 are exposed to the outside, and the end face 17a of the paper 17 is also exposed to the outside. Penetrates into the paper 17. Therefore, it is possible to prevent water from permeating the paper 17 by waterproofing the end surface 12a-1 (12a-2 to 12a-4) so that it does not come into contact with water.

Next, the structure of the joint portions 13 and 14, which is the main part of the present invention, will be described with reference to FIG.

In the joint portion 13 arranged on the upper portion of the paper container 10, the end portion 12-1 of the paper material 12 is on the lower side and the end portion 12-2 is on the upper side as shown in the figure. It is bent so that it can be caught in. Then, in a state where the end faces of the end portions 12-1 and 12-2 are abutted with each other, a predetermined range thereof is fixed by adhesion or the like. The position where the above-mentioned end faces are abutted is indicated by reference numeral 22 in the figure, and this position is hereinafter referred to as the facing portion.

By fixing the end portions 12-1 and 12-2 in this manner, the end faces of the end portions 12-1 and 12-2, that is, the facing portion 22 at the water permeation position, is bent and formed. The paper material 12 is surrounded by the paper material 12 and is covered with the outside. In addition, the above-mentioned bonding process performed in the predetermined range of each of the end portions 12-1 and 12-2 is a bonding process for forming a liquid-tight structure. Therefore, water or the like does not enter the facing portion 22, and it is possible to reliably prevent water or the like from penetrating into the paper material 12 from the end faces of the end portions 12-1 and 12-2.

Further, the joint portion 14 arranged at the bottom of the paper container 10 has the same structure as the joint portion 13, and the end portion 12-4 of the paper material 12 is as shown in the figure. The end portion 12-3 is bent downward so that the end portion 12-3 is rolled up. Then, in a state in which the end faces of the end portions 12-3 and 12-4 are butted against each other, a predetermined area thereof is fixed by adhesion or the like, and the facing portion 23 is surrounded by the bent paper material 12. Water or the like does not enter the facing portion 23, and it is possible to reliably prevent water or the like from penetrating into the paper material 12 from the end faces of the end portions 12-3 and 12-4.

Also at the joint portion 25 on the side portion of the paper container 10, as shown in FIG. 3, the end portion 12-5 of the paper material 12 is wound outside and the end portion 12-6 is wound inside. It is bent and formed. Then, in a state where the end faces of the respective end portions 12-5 and 12-6 are butted against each other, a predetermined area thereof is fixed by adhesion or the like, and the facing portion 24 is surrounded by the bent paper material 12. Thus, it is possible to prevent water or the like from penetrating into the paper material 12 from the facing portion 23.

Therefore, according to the configuration of the present application, the facing portions 22 to 24, which are the portions into which water and the like enter, are surrounded by the paper material 12 that is bent and joined by the waterproof adhesive and is covered with the outside. As a result, the water and the like do not enter from the facing portions 22 to 24, and it is possible to reliably prevent the water and the like from penetrating into the paper material 12. Therefore, it is possible to prevent the strength of the paper container 10 from decreasing and the multilayered paper material 12 from peeling off, and it is possible to improve the reliability of the paper container 12.

In the above-described embodiment, the respective end faces of the paper material 12 are in direct contact with each other at the facing portions 22 to 24, but it is not always necessary that the end faces of the facing portions 22 to 24 are in direct contact with each other. The effect of the present invention can be realized even in a separated state. Even if the end surfaces are separated from each other in the facing portion, if the facing portion is surrounded by the paper material that is bent and joined by a waterproof adhesive, This is because the end surface is not exposed to the outside and water etc. can be prevented from entering.

[0027]

[Effect of device]

 As described above, according to the present invention, since the facing portion where the external liquid such as water may enter is surrounded by the folded paper material and covered with the outside, the end portion of the paper material is not covered. Since the joining position is covered with a waterproof member and the end surface of the paper material is covered with the outside, it is possible to prevent the external liquid from entering the paper material, which reduces the strength of the paper container and multi-layers. In the case of paper materials, the peeling can be prevented and the reliability of the paper container can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a paper container according to an embodiment of the present invention.

FIG. 2 is an external view of a paper container that is an embodiment of the present invention.

FIG. 3 is an enlarged view showing a facing portion in a side portion of a paper container.

FIG. 4 is an enlarged view showing a configuration of a paper material at an end portion.

FIG. 5 is a perspective view showing an example of a conventional paper container.

FIG. 6 is a view showing an example of a conventional paper container, (A)
FIG. 4B is a cross-sectional view of the paper container, and FIG. 7B is a vertical cross-sectional view of the bottom of the paper container.

[Explanation of symbols]

 10 Paper Container 12 Paper Material 12-1 to 12-6 Ends 13, 14, 25 Joints 15 Plugs 15a Caps 16, 18, 21 LDPE Layers 17 Paper 19 Aluminum Foil Layers 20 PET Layers 22-24 Facing Parts

Claims (1)

[Scope of utility model registration request] 1. A paper container formed by forming a paper material into a pack so that the contents can be filled inside, and joining the ends of the paper material at a predetermined joining portion. A paper container characterized in that the paper material is bent and formed so that a pair of end portions of the paper material face each other, and the facing portion is liquid-tightly surrounded by the bent paper material. .