JPH0647118U - Paper container - Google Patents

Abstract

(57) [Summary] [Object] 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 penetrating into the paper material from the outside. [Structure] A paper material 12 is formed in a pack shape so that the contents can be filled therein, and at least a bottom portion 11 thereof has a joint portion to which end portions 12-1 and 12-2 of the paper material 12 are joined.
In the paper container having a structure in which the end surfaces 12a-1 and 12a-2 of the paper material 12 are exposed to the outside, the end portion 12- of the paper material 12 is
At the joining position of 1, 12-2, the end faces 12a-1, 12a-2
A waterproof tape 13 that prevents the external liquid from entering the paper material 12 is provided.

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 as a container for various contents has been increasing in recent years.

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 requiring joining is generated at the end portion of the paper material 2. It is desirable in appearance that the joint portion 3 at the end portion does not appear to the outside as much as possible. Therefore, the joint portion of the end portion 2a is, as shown in FIG. 6 (A), the joint portion at the side portion thereof at the corner portion 3 of the paper container 1, and as shown in FIG. 6 (B). The joint at the bottom was selected to be 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 peels off each layer such as low density polyethylene and aluminum foil laminated on the paper, 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.

In addition, a lot of water is often present on the floor of the bathroom, and the shampoo container is often placed on the floor of the bathroom. Therefore, when the joint portion of the end portion 2a is provided on the bottom portion 4 of the paper container 1 as described above, water easily penetrates into the paper material 2 especially from the end surface 2b at the bottom portion.

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.

[0013]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, a paper material is formed into a pack shape so that the contents can be filled therein, and at least a bottom portion thereof has a joint portion to which an end portion of the paper material is joined. In a paper container having a configuration in which the end surface of the paper material is exposed to the outside, a waterproof member is provided at the joining position of the end portions of the paper material to prevent external liquid from entering the paper material from the end surface. It is a feature.

[0014]

[Action]

 By configuring the paper container as described above, the joint position of the end of the paper material is covered by the waterproof member, and the end surface of the paper material is covered to the outside, so external liquid enters the paper material. Since it is possible to prevent the deterioration of the strength of the paper container and peeling of the paper material in the case of a multi-layered paper material, the reliability of the paper container can be improved.

[0015]

【Example】

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

FIG. 1 shows a cross section of a paper container 10 which is an embodiment of the present invention. 1A is a vertical cross-sectional view of the bottom of the paper container 10, and FIG. 1B is a cross-sectional view of the paper container 10. 5A corresponds to the cross section taken along the line AA in FIG. 5, and FIG. 5B corresponds to the cross section taken along the line BB in FIG.

As shown in FIG. 1A, at the bottom portion 11 of the paper container 10, the end portion 12-1 of the paper material 12 is rolled up as shown in the drawing, and each end portion 12-1 and 12-2 is fixed by gluing or the like in a state where the inner portions of 12-2 are butted against each other. By fixing the end portions 12-1 and 12-2 as described above, the end surfaces 12a-1 and 12a-2 of the end portions 12-1 and 12-2 are exposed to the outside of the paper container 10. However, the present invention is characterized in that the waterproof tape 13 is arranged so as to directly cover the end faces 12a-1 and 12a-2.

As the material of the waterproof tape 13, for example, LDPE (low density polyethylene) having a thickness of about 20 μm, PET (polyethylene terephthalate) having a thickness of about 12 μm, or LDPE having a thickness of about 20 μm can be considered. Further, the waterproof tape 13 may be attached to the end faces 12a-1 and 12a-2 by heating the waterproof tape 13 and fixing it by utilizing the welding action of the waterproof tape 13 generated thereafter.

As described above, by disposing the waterproof tape 13 on the end surfaces 12a-1 and 12a-2 of the paper material 12, water or the like permeates into the paper material 12 through the end surfaces 12a-1 and 12a-2. This can be reliably prevented.

Further, as shown in FIG. 2B, also at the side portion 14 of the paper container 10, the end portion 12-3 of the paper material 12 is rolled up as shown in the drawing, and each end portion 12 is wound. -3 and 12-4 are fixed to each other by gluing or the like within a predetermined range with the inner parts of each other abutting each other. Therefore, the end surfaces 12a-3 and 12a-4 of the end portions 12-3 and 12-4 are exposed to the outside of the paper container 10, but the end surface 12a-3 and the end surfaces 12a-3 and 12a-3 of the paper container 10 are also exposed. By sticking the waterproof tape 15 to the side portion 14 of the paper container 10 so as to cover 12a-4, the end surfaces 12a-3, 12a-4 are isolated from the outside, and water or the like is kept inside the paper material 12. It is designed to prevent penetration.

Here, FIG. 2 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.

The paper material 12 shown in the figure has 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 in this order from the front side. It has a multi-layered structure. Of the above-mentioned constituent layers, the LDPE layers 16, 18, 21 except the paper 17, the aluminum foil layer 19, and the PET layer 20 are waterproof, but the paper 17 permeates water.

In the end surfaces 12a-1 to 12a-4 of the paper material 12, the end surfaces of the layers 16 to 21 are exposed to the outside, and the end surface 17a of the paper 17 is also exposed to the outside. Water penetrates the paper 17. Therefore, it is possible to prevent water from permeating the paper 17 by waterproofing the end surfaces 12a-1 to 12a-4 so that they do not come into contact with water.

Therefore, by arranging the waterproof tapes 13 and 15 as in the configuration of the present application and coating the end surfaces 12a-1 to 12a-4 of the paper material 12 to the outside, water permeates the paper 17. It is possible to prevent the deterioration of the strength of the paper container 10 and the peeling of the multi-layered paper material 12, and it is possible to improve the reliability of the paper container 12.

FIG. 3 shows a paper container 22 which is a modification of the paper container 10 shown in FIG. 1A is a vertical cross-sectional view of the bottom of the paper container 22, and FIG. 1B is a cross-sectional view of the paper container 22. Incidentally, in FIG. 3, the same components as those shown in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 1A, in the paper container 22 according to this modification, the end faces 12 a-1 and 12 a-2 of the paper material 12 are not directly covered with the waterproof tape 23, but After forming the paper container 22 by the same manufacturing method as the conventional method (see FIG. 6 (B)), waterproof the end portion 12a-1 and 12a-2 of the bottom portion 11 of the paper container 22 to the exposed portion so as to cover it. The tape 23 is provided.

With this configuration, the paper container 22 can be manufactured by the same manufacturing method as the conventional one, so that the paper container 22 can be manufactured without significantly changing the assembly process. Further, since the work of sticking the waterproof tape 23 is an easy work, it may reduce the production efficiency of the paper container 22 or may unnecessarily increase the product cost of the paper container 22. There is no.

Further, as shown in FIG. 2B, the waterproof tape 24 is provided even when the end portions 12a -3 and 12a-4 of the paper material 12 on the side portion 14 are joined at corners. It is possible to achieve the effect of the present invention.

In the above embodiment, the waterproof tapes 13, 15, 23, and 24 are used to cover the end surfaces 12a-1 to 12a-4 of the paper material 12, but the end surfaces are different. The members for covering 12a-1 to 12a-4 are not limited to the waterproof tapes 13, 15, 23, 24, and other waterproof members such as a water-resistant adhesive can be used.

The present invention can also be applied to a paper container 27 to which a dispenser 26 as shown in FIG. 4 is attached.

Further, the arrangement structure of each waterproof tape of the bottom portion 11 and the side portion 14 is not limited to the combination shown in FIGS. 1 and 3 described above, and for example, FIGS. 1 (A) and 3 (B). 1B and FIG. 3A may be combined.

[0032]

[Effect of device]

 As described above, according to the present invention, the joint position of the end portion of the paper material is covered with the waterproof member and the end surface of the paper material is covered with the outside, so that the external liquid is prevented from entering the paper material. Therefore, the strength of the paper container can be reduced, and in the case of a multi-layered paper material, peeling can be prevented, so that the reliability of the paper container can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a paper container according to an embodiment of the present invention, FIG. 1A is a vertical cross-sectional view of the bottom of the paper container,
(B) is a cross-sectional view of a paper container.

FIG. 2 is an enlarged view showing a cross section of an end portion of a paper material.

FIG. 3 is a view showing a modified example of the paper container shown in FIG. 1, (A) is a vertical cross-sectional view at the bottom of the paper container,
(B) is a cross-sectional view of a paper container.

FIG. 4 is a diagram showing a configuration in which a dispenser is attached to the paper container having the configuration of the present application.

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, 22, 27 Paper container 11 Bottom part 12 Paper material 12-1 to 12-4 End part 12a-1 to 12a-4 End face 13, 15, 23, 24 Waterproof tape 14 Side part 16, 18, 21 LDPE layer 17 Paper 19 Aluminum foil layer 20 PET layer 26 Dispenser

Claims (1)

[Scope of utility model registration request] 1. A paper material is formed into a pack so that the inside can be filled with contents, and at least a bottom portion thereof has a joining portion to which an end portion of the paper material is joined, and an end surface of the paper material is provided outside. An exposed paper container, characterized in that a waterproof member for preventing external liquid from entering the paper material through the end surface is provided at a joining position of the end portions of the paper material. .