JP2000289759A - Paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a paper container in which a container main body and a cover are set in the locked state to prevent alterations after packaging has been done. SOLUTION: A container main body 1 is constituted of a peripheral wall 2 and a bottom plate 4 blocking a lower opening of the peripheral wall 2, and a reinforcing section 3 is provided on the upper side outer periphery of the peripheral wall 2, while a cover 5 is constituted of an annular wall 6 and a top plate 8 blocking an opening of the annular wall 6, and an engaging wall 7 to be bent freely is formed continuously on the lower side of the annular wall 6. An article A is housed in the container main body 1, and when the cover 5 is fitted on the container main body 1, the annular wall 6 is positioned on the outer peripheral side of the reinforcing section 3, and the engaging wall 7 is folded back on the peripheral side of the annular wall 6 below the reinforcing section 3 and positioned between a central section of the reinforcing section 3 and the peripheral wall 2, and the container main body 1 and the cover 5 are set in the locked state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper container used for packaging various products.

[0002]

2. Description of the Related Art Among paper containers, in the case of a circular paper container in which a lid is fitted into a mouth of a container body, for example, a paper container for ice cream as shown in FIG. An outer winding rib 13 is provided on the lower surface of the cover, and a locking rib 16 is provided below the lid annular wall 6.
When the lid 5 is fitted to the container body 1, the outer winding rib 13 and the locking rib 16 are fitted while being elastically deformed. When the fitting is completed, the outer winding rib 13 and the locking rib 16 are fitted. But shallow enough to be easily removed by children. Further, instead of providing the locking rib 16 on the annular wall 6 of the lid 5, a convex ridge that is shallowly locked with the outer winding rib 13 when the fitting of the lid 5 is completed may be provided. (For example, Japanese Utility Model Publication No. Sho 45-11029 and Japanese Utility Model Publication No. Hei 3-29457)

[0003]

The conventional locking force between the container main body and the lid is shallowly locked so that the product can be easily opened and eaten after purchase of the product, so that even children can easily open the product.
There has been an incident where an inexperienced person opens the lid and mixes toxic substances into the paper container. This is because even if the packaging by the paper container is tampered with before being opened by the product purchaser, no trace of tampering remains. Then, this invention was made in view of such a problem which a prior art has, and the object is to lock a container main body and a lid, and to prevent tampering after packaging. To provide an improved paper container.

[0004]

According to a first aspect of the present invention, there is provided a paper container according to the present invention, wherein the container body comprises a peripheral wall and a bottom plate for closing a lower opening of the peripheral wall.
A reinforcing portion is provided on the outer periphery of the upper side of the peripheral wall, the lid body is composed of an annular wall, a top plate closing an opening of the annular wall, and a bendable locking wall is continuously formed below the annular wall. When the lid is fitted to the container body, the annular wall is located on the outer peripheral side of the reinforcing portion, and the locking wall is folded back to the inner peripheral side of the annular wall below the reinforcing portion, and the center of the reinforcing portion is formed. Between the container and the peripheral wall, and locks the container body and the lid. According to a second aspect, in the paper container according to the first aspect, the reinforcing portion is an outer winding rib having the upper end portion of the peripheral wall wound on the outer peripheral side, and the tip end of the locking wall that is folded inward on the inner peripheral side of the annular wall is the peripheral wall side. To reach the outer winding rib.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a paper container according to the present invention will be described with reference to FIG. 1. The container comprises a container body 1 and a lid 5, the container body 1 having a peripheral wall 2, and a lower opening of the peripheral wall 2. The upper wall of the peripheral wall 2 is provided with a reinforcing portion 3 around the outer wall, and the lid 5 is formed of an annular wall 6 and a top plate 8 closing the opening of the annular wall 6. A bendable locking wall 7 is continuously provided under the container body 1, the product A is stored in the container body 1, and when the lid 5 is fitted to the container body 1, the annular wall 6 is reinforced. The retaining wall 7 is located on the outer peripheral side of the portion 3, and the locking wall 7 is folded back toward the inner peripheral side of the annular wall 6 below the reinforcing portion 3, between the central portion of the reinforcing portion 3 and the peripheral wall 2, Body 5
Is locked.

The second embodiment of the paper container according to the present invention will be described only with respect to portions different from the first embodiment. As shown in FIG. 2, an outer winding in which the reinforcing portion 3 winds the upper end portion 2a of the peripheral wall on the outer peripheral side. The distal end 7 a of the locking wall 7, which is a rib 13, which is folded toward the inner peripheral side of the annular wall 6, reaches the peripheral wall 2 side, and the outer winding rib 13
Is in contact with Engagement wall 7 folded back on the inner peripheral side of annular wall 6
Is an upwardly shallow curve as shown in FIG.
As shown in FIG. 2 (c), it is bent upward and deeply, and as shown in FIG. 2 (c), it is folded back so as to be inscribed in the annular wall 6 and is curved toward the peripheral wall 2 side. Winding rib 1
3 comes into contact with the peripheral wall 2 side from the center.

Since the paper container of the present invention has the above-described structure, the reinforcing portion 3 is provided on the peripheral wall 2 of the container body 1 and is locked below the annular wall 6 of the lid 5 in the paper container processing step. A wall 7 is provided. When packaging the product A in the paper container of the present invention, first, the product A is stored inside the container main body 1, and after the cover 5 is inserted into the container main body 1, the product A is positioned on the outer peripheral side of the reinforcing portion 3. The locking wall 7 of the annular wall 6 is folded back on the inner peripheral side of the annular wall 6, and the tip 7 a of the locking wall 7 abuts on the peripheral wall 2 side from the center of the reinforcing portion 3, and the locking wall 7 And the reinforcement part 3 are deepened.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A peripheral wall 2 of a container body 1 is tapered so as to have a slightly wide opening upward from a lower end, and a means for attaching the peripheral wall 2 and a bottom plate 4 is formed, for example, on the outer edge of the bottom plate 4 by the inner wall. The lower piece 4a is provided so as to be in contact therewith, the lower end 2b of the peripheral wall is folded back to the inner peripheral side of the lower piece 4a, and the lower piece 4a is clamped between the peripheral wall 2 and the lower end 2b of the peripheral wall. It is also possible to mount with. The annular wall 6 of the lid 5 is
The means for attaching the annular wall 6 to the top plate 8 is substantially equal to the outer diameter R of the top plate 8.
And the upper piece 8a is wound inward together with the upper end portion 6a of the annular wall to form the inner winding rib 9 so as to be locked to the annular wall 6.

If a concave portion, a fold line, a sewing machine hole or a cut is provided at the boundary between the annular wall 6 and the locking wall 7, the bending of the locking wall 7 becomes extremely easy, and the annular wall 6 6, wrinkles due to the bending of the locking wall 7 are also reduced.
The concave portion, the sewing hole, the sewing hole, the cut, and the like are formed when the annular wall developing paper is punched. The peripheral wall 2 and the bottom plate 4 forming the container body 1, and the annular wall 6 and the top plate 8 forming the lid 5 are provided with a resin coating on one surface of durable elastic paperboard, waterproof paper, heat-resistant paperboard, and paperboard. Interleaf paper,
It is formed from aluminum foil or laminated paper on which an aluminum film is attached.

[0010]

Since the paper container of the present invention is as described above, the following effects can be obtained. In the paper container according to the first aspect, after the lid is fitted to the container main body, the locking wall provided on the annular wall is turned back to the inner peripheral side, and the container main body and the lid are brought into the locked state. Even if a novice tries to open and close the paper container, it cannot be easily opened and closed and tampered with. Moreover, if the paper container is forcibly opened and closed, the paper container is deformed or damaged, so that tampering can be easily found. In the paper container according to the second aspect, in addition to the effect of the first aspect, since the reinforcing portion is the outer winding rib, the fitting of the lid is light, and the tip of the locking wall reaches the peripheral wall side. The locked state becomes stronger.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a structure of a paper container according to the present invention and an example of its use.

FIGS. 2A, 2B, and 2C are end views of a main part showing an example of locking of a locking wall.

FIGS. 3A and 3B are longitudinal sectional views showing a conventional paper container and an example of its use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Peripheral wall, 2a peripheral wall upper end part, 2b peripheral wall lower end part 3 Reinforcement part 4 Bottom plate 5 Lid 6 Annular wall 7 Locking wall, 7a Locking wall tip 8 Top plate 9 Internal winding rib 13 External winding rib, 16 Locking rib A product

Claims (2)

[Claims] 1. A container body (1) is composed of a peripheral wall (2) and a bottom plate (4) for closing a lower opening of the peripheral wall (2), and the peripheral wall (2) has a reinforcing portion (3) on an upper outer periphery. The lid (5) is composed of an annular wall (6) and a top plate (8) for closing the opening of the annular wall (6), and the annular wall (6) is provided on the lower side with a locking wall (7). ) Are provided continuously, and when the lid (5) is fitted to the container body (1), the annular wall (6) is located on the outer peripheral side of the reinforcing portion (3), and the locking wall (7) is provided. Is folded back to the inner peripheral side of the annular wall (6) below the reinforcing portion (3), and the reinforcing portion (3)
A paper container, wherein the container body (1) and the lid (5) are in a locked state between the central portion and the peripheral wall (2). 2. The outer wall rib (13) in which the reinforcing portion (3) is wound around the outer peripheral side of the upper end portion (2a) of the peripheral wall, and the annular wall (6).
2. The paper according to claim 1, wherein a front end (7a) of the locking wall (7) that is folded back toward the inner peripheral side reaches the peripheral wall (2) side and contacts the outer winding rib (13). container.