JPH08217052A - Paper container - Google Patents

Abstract

PURPOSE: To provide a paper container of which the cost is reduced, of which the strength is improved, and of which the disposal is facilitated. CONSTITUTION: By affixing both end parts of a paper sheet with an adhesive or double face tape, etc., a cylindrical main body 12 is formed. A bottom lid 16 is formed by affixing a bottom plate 18 with a specified thickness, of which the outer contour is set to be internally fittable in one opening 12a of the cylindrical main body 12, and an outer plate 17 with an outer contour which is larger than the bottom plate 18 and is non-detachably fixed on the opening 12a. An upper lid 13 is formed by affixing a lid plate 15 with a specified thickness, of which the outer contour is set to be internally fittable in the other opening 12b of the cylindrical main body 12, and an outer plate 14 with an outer contour which is larger than the lid plate 15, and is detachably fitted in the opening 12b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper container, and more particularly to a container of various shapes in which all containers used for storing and storing foods can be made of paper. Is.

[0002]

2. Description of the Related Art Foods and other various articles are often stored in glass bottles, tin or aluminum cans, and containers made of synthetic resin such as Styrofoam or plastics for sale or long-term storage. Of these, bottles and cans have drawbacks such as increased manufacturing cost and weight. Therefore, from the viewpoint of cost reduction and weight reduction, it has been replaced with a container made of a synthetic resin such as styrofoam or plastic. However, from various standpoints such as environmental problems such as pollution and resource problems, recycling technology for bottles and cans has already reached the stage of practical application, but technology for recycling synthetic resin and disposal with low pollution is still established. However, the treatment of synthetic resin wastes discharged in large quantities from ordinary households and factories has become a major issue.

[0003] In recent years, therefore, attention has been paid to a technique using paper that can be recycled and can be incinerated as general waste, and has already been applied to foods such as milk, juices, coffee and seasonings. Paper containers have been put to practical use. For example, FIGS. 8, 9, 10 and 11 schematically show a cylindrical paper container, and the paper container 25 shown in FIGS. 8 and 9 includes an outer cylinder 27 and an inner cylinder 28. It is basically composed of a cylinder body 12, a bottom lid 16, and an upper lid 13. The outer cylinder 27 is formed into a tubular shape by forming the winding portion 26 on one side of the paper sheet (one side that is the bottom end of the paper container 25) and then joining both ends with the winding portion 26 inside. Molded. Then, after inserting the circular bottom plate 18 which can be fitted into the outer cylinder 27 from the upper opening 12b, the inner cylinder 28 formed so as to be inscribed in the outer cylinder 27 is inserted to insert the cylinder main body 12 and the bottom cover. 16 is formed. The bottom plate 18 fitted as the bottom cover 16 includes the winding portion 26 and the inner cylinder 2.
It is fixed by being sandwiched by the lower end portion 28a of No. 8. Also the top lid 13
Similar to the outer cylinder 27, is a cylindrical body 29 formed by cylindrically forming a paper sheet having a roll-in portion 26 at the upper end, and a circular body 29 fitted in and bonded from an opening 29b of the cylindrical body 29. Cover plate 1
5 and 5. The upper lid 13 has the opening 2
The so-called "ink cage type" in which 9b is fitted onto the inner cylinder 28 of the cylinder body 12
It is detachably attached to the cylinder body 12 by the fitting method of.

Further, a paper container 30 shown in FIGS.
Is a cylinder body 12, an upper lid 13 formed in the same shape,
It is composed of a bottom lid 16. The tube body 12 is formed into a tube by joining both ends of a paper sheet, and the top cover 1
3 and the bottom lid 16 are formed by pressing a circular paper containing water with a pressing machine or the like and then drying it. The bottom lid 16 is provided on one side of the opening 12 of the cylinder body 12.
The outer cover is fixedly attached to a by being fitted in and bonded to it, and the upper lid 13 is removably attached to the other opening 12b by fitting its outer fit.

[0005]

In the paper container 25 described above, however, the bottom plate 18 and the cover plate 15 are formed with the winding portions 26 at the lower end portion of the cylinder body 12 and the upper end portion of the upper lid 13 for preventing removal thereof. However, there is a drawback that the cost becomes high because there is a process for In addition, in the upper lid 13, the thin lid plate 15 has a cylindrical body 29.
Since only the inner peripheral surface and the end surface portion 15a of the container are bonded and fixed, there is a problem in adhesive strength that the container 25 is easily displaced by a pressing force from the outside. Further, the paper container 30 is a cylinder body 1
2 can be formed into a tubular shape by simply joining both ends of a paper sheet, which enables cost reduction, but the upper lid 13 and the bottom lid 16
Molding has a drawback that it cannot be applied to anything other than a circular shape or a substantially circular shape. That is, as shown in FIG. 11, the top cover 13 and the bottom cover 16 need to be appropriately formed in a concavo-convex shape in order to obtain their own strength. This causes defects such as wrinkles and cracks after molding. Therefore, as for the rectangular tube-shaped container, although only the upper lid 13 and the bottom lid 16 are molded products made of synthetic resin, the problem of waste disposal after use cannot be solved.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned drawbacks inherent in the conventional paper containers, and the upper lid and the bottom lid are all punched from paper sheets or An object of the present invention is to provide a paper container having various shapes, which can reduce costs, improve strength, and facilitate disposal by making a molded product that can be manufactured by punching.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems and preferably achieve an intended purpose, the present invention is directed to a cylinder body formed by molding a paper sheet into a cylinder shape, and one opening portion of the cylinder body. A bottom lid made of paper fixed to a container and a top lid made of paper removably fitted in the other opening of the cylinder body, wherein the bottom lid is one opening of the cylinder body. A bottom plate having a required thickness set to an outer contour that can be fitted inside, and an outer plate having an outer contour larger than this bottom plate and attached to the outer surface of the bottom plate, wherein the upper lid is the other opening of the cylinder body. A lid plate having a required thickness set to an outer contour that can be fitted in the portion, and an outer plate having an outer contour larger than this lid plate and attached to the outer surface of the lid plate, wherein the bottom lid is a bottom plate. The upper lid covers the lid plate in one opening of the cylinder body and adheres the same to the other opening of the cylinder body. Characterized by being configured to internally fitted detachably.

[0008]

The preferred embodiments of the paper container according to the present invention will be described below with reference to the accompanying drawings.
In the embodiment, a cylindrical paper container is described, and the same members as those of the existing paper container described above are designated by the same reference numerals. FIG. 1 is an overall perspective view showing each constituent member of a paper container according to a preferred embodiment of the present invention in an exploded state, and FIG. 2 is a cross-sectional view of a cylinder body and a bottom cover of the paper container with an upper lid removed. 3A and 3B are explanatory views briefly showing a process of manufacturing the paper container according to the embodiment. 3 (a) and FIG.
As shown in (b), by attaching both ends of the paper sheet 8 with an adhesive, a double-sided tape or the like, a substantially cylindrical tube body 12 is formed.
Is molded. For example, the vertical dimension H of the paper sheet 8 is substantially the same as the height dimension of the completed paper container 10, and the horizontal dimension W is the outer peripheral dimension of the paper container 10 and the adhesive margin 19.
The dimensions are combined with. In addition, as the material of the paper sheet 8, thick paper, cardboard paper, or the like is preferably used, and printing or the like is appropriately performed as necessary.

As shown in FIG. 4 (b), the bottom lid 16 has a bottom plate 18 having a required thickness set to an outer contour capable of being fitted in one opening 12a of the cylinder body 12, and an outer portion larger than the bottom plate 18. The outer plate 17 has a contour. This skin 17
The bottom plate 18 and the bottom plate 18 are made of cardboard or the like having a required thickness, and are punched or punched by a press machine equipped with a mold or a cutting blade (not shown), as shown in FIG. 4 (a). Individually molded. Then, the outer plate 17 is attached to the surface of the bottom plate 18 that is on the outside of the container, so that the bottom lid 16 having the required shape and thickness is formed.

The upper lid 13 has a lid plate 15 having a required thickness set to an outer contour which can be fitted in the other opening 12b of the cylinder body 12, and an outer contour larger than the lid plate 15, and the lid plate 15 has a larger outer contour. And an outer plate 14 attached to the outer surface of the. In this embodiment, the top lid 13 has the same shape as the bottom lid 16 as an example, and is molded by the same method as the bottom lid 16. That is, the outer plate 1 is made from a material such as cardboard or cardboard having a required thickness by punching or punching with a press machine.
4 and the lid plate 15 are individually molded. And the lid plate 15
By laminating the outer plate 14 on the outer surface of the, an upper lid 16 having a required shape and thickness is formed.

The above-mentioned punching process and punching process are
Accurate forming of thick paper having a thickness of several cm is possible, and therefore, the top lid 13 and the bottom lid 1 having a necessary and sufficient thickness are formed.
6 can be obtained. The top lid 13 and the bottom lid 16 do not have to have the same shape.
6 may be made thicker, and the shape and thickness may be appropriately set according to the application. Further, at the time of forming the outer plates 14 and 17, the lid plate 15 and the bottom plate 18 are provided on the back surface of the outer plates 14 and 17.
If the groove 20 having the same shape as that of the outer contour is recessed, the outer plate 14 and the lid plate 15, and the outer plate 17 and the bottom plate 18 can be accurately positioned and bonded together.

Then, as shown in FIGS. 2 and 3 (c),
The bottom lid 16 is bonded to one opening 12a of the cylinder body 12, and the top lid 13 is fitted to the other opening 12b. That is, the bottom lid 16 is obtained by applying an adhesive or the like to the outer contour portion of the bottom plate 18 and then fitting the bottom plate 18 into the opening 12 a of the barrel body 12 to thereby form the barrel body 12 and the bottom lid 13.
Is irremovably attached. On the other hand, since the upper lid 13 needs to be removable, the lid plate 15 is attached to the opening 1 of the cylinder body 12.
The outer plate 14 is attached and detached by being fitted inside, and is attached and detached by picking the end portion of the outer plate 14 with fingers or the like. If the outer contours of the lid plate 15 of the upper lid 13 and the bottom plate 18 of the bottom lid 16 are processed so as to have a tapered shape at the time of molding, smooth fitting can be performed and a constant mounting force can be obtained under the wedge action. Is added.

[0013]

[Modification] The paper container according to the present invention is not limited to the embodiment shown in FIG. 1. For example, as shown in FIG. 5, a paper sheet 8 formed in a long strip shape is spirally wound. While the end portions of the paper sheets 8 that have abutted or overlapped while being rotated are sequentially adhered to each other to form a cylindrical tube main body 12, the tube main body 12
The paper container 10 may be configured such that the bottom lid 16 formed as described above is bonded to one opening 12a and the top lid 13 formed as described above is fitted to the other opening 12b.

Further, as shown in FIG. 6, the cylinder body 12 and the upper lid 13 can be suitably implemented as a paper container 11 in which the cylinder body 12 and the upper lid 13 are detachably fitted by a cage type fitting method. That is, the cylinder body 12 is the outer cylinder 2 formed by molding the paper sheet 8.
An inner cylinder 2 composed of 7 and an inner cylinder 28 and inscribed in the outer cylinder 27.
It is formed by inserting 8. The bottom plate 18 of the bottom lid 16 formed as described above is fitted in and bonded to one opening 12a of the cylinder body 12. On the other hand, the upper lid 13 has one opening 2 of a tubular body 29 in which a paper sheet is formed into a tubular shape having the same diameter as the outer tube 27.
The cover plate 15 adhered to the outer plate 14 as described above is fitted in and adhered to 9a. And the upper lid 13 is the cylindrical body 2
The opening 29b of 9 is detachably fitted onto the protruding inner cylinder 28 of the cylinder body 12 so as to be attached thereto. This paper container 11 is the same as the existing paper container 25 shown in FIGS.
It is the same as the basket type, but since it is not necessary to form the winding portion 26 at each end of the outer cylinder 27 of the cylinder main body 12 and the cylinder 29 of the upper lid 13, it can be manufactured at a lower cost, and Sufficient adhesive strength between the bottom plate 18, the cylindrical body 29 and the lid plate 15 can be obtained.

Further, although the cylindrical paper container has been described in the embodiment, according to the punching process and the punching process described above,
Since it is possible to easily form the upper lid 13 and the bottom lid 16 having an outer contour shape having a triangular or quadrangular shape and a complicated curve, as well as a circular shape or an elliptical shape, only by changing the shape of the mold or the cutting blade, as shown in FIG. Paper containers having various shapes such as a triangular tube shape and a kamaboko shape can also be suitably implemented.

[0016]

As described above, according to the paper container of the present invention, the main body of the container, the top lid and the bottom lid are all made of paper, which facilitates the disposal after use. It will be possible. Since the top lid and the bottom lid can be molded articles manufactured by punching or punching from a paper sheet having a required thickness, it is possible to reduce the processing cost and improve the strength. Further, since the top lid and the bottom lid can be formed in various shapes, there is a beneficial advantage such that the paper containers of various shapes can be mass-produced.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a paper container according to a preferred embodiment of the present invention in a disassembled state.

FIG. 2 is a front view of the paper container according to the embodiment with the top lid removed and the cylinder body and the bottom lid in cross section.

FIG. 3 is an explanatory perspective view showing step by step a process of making a paper container according to an embodiment.

FIG. 4 is an explanatory perspective view showing an upper lid and a bottom lid of the paper container according to the embodiment.

FIG. 5 is a perspective view showing another embodiment of the paper container according to the present invention.

FIG. 6 is a partially cutaway perspective view showing still another embodiment of the paper container according to the present invention.

FIG. 7 is a perspective view showing still another embodiment of the paper container according to the present invention.

FIG. 8 is a perspective view showing an existing paper container partially broken away.

FIG. 9 is a vertical sectional front view of an existing paper container.

FIG. 10 is a perspective view showing another existing paper container partially broken away.

FIG. 11 is a vertical sectional front view of another existing paper container.

[Explanation of symbols]

 8 Paper Sheet 12 Cylinder Body 12a, 12b Opening 13 Upper Lid 14 Outer Plate 15 Lid Plate 16 Bottom Lid 17 Outer Plate 18 Bottom Plate

Claims (2)

[Claims] 1. A cylinder body (12) formed by molding a paper sheet (8) into a cylinder shape, and a paper bottom cover (16) fixed to one opening (12a) of the cylinder body (12). And the other opening (12
A container consisting of a paper upper lid (13) removably fitted to b), wherein the bottom lid (16) is fitted inside one opening (12a) of the cylinder body (12). Bottom plate (18) with the required thickness set to the external contour to obtain,
The bottom plate (18) has an outer contour larger than that of the bottom plate (18) and is attached to the outer surface of the bottom plate (18). The upper lid (13) is the other opening of the tube body (12). A cover plate (15) with a required thickness set to the outer contour that can be fitted in (12b),
The lid plate (15) has an outer contour larger than that of the lid plate (15) and is attached to the outer surface of the lid plate (15). The bottom lid (16) includes the bottom plate (18) and the cylinder body. (12) One opening
The upper lid (13) is a cover plate while being fitted in and bonded to (12a).
A paper container characterized in that (15) is detachably fitted into the other opening (12b) of the cylinder body (12). 2. The bottom plate (18) forming the bottom cover (16) and the cover plate (15) forming the top cover (13) are individually formed by punching or punching cardboard or cardboard. The paper-made container according to claim 1.