JPH1024919A - Cup-like composite container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate inconvenience to form an air hole in a bottom with a tool such as a needle in use, without any problem in terms of environment safeguard, and heighten commodity value. SOLUTION: In a cup-like composite container, a cup-like paper container made mainly of a paper layer and a laminate material having a synthetic resin layer on its inner face or both inner and outer faces is previously mounted in an injection molding die, a heat melted synthetic resin is injected into the die, and a reinforcing frame is formed integrally with a peripheral edge of an opening, a sticking end face, and a bottom annular part of the cup-like paper container. An open bar penetration hole 121 is formed in a bottom 120 of the cup-like paper container 100. At the open bar penetration hole, an open bar 231 which is attached to the bottom face of the bottom annular part 230 of the reinforcing frame 200 and can form an air hole in the bottom annular part is formed in a penetrating manner. The bottom end of the open bar is protruded to the inside lower part of the bottom.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cup-shaped composite container used as a container for semi-solid dessert foods such as pudding and jelly.

[0002]

2. Description of the Related Art Conventionally, semi-solid dessert food has been placed in a cup-shaped plastic container.
The opening bar provided on the lower surface of the bottom of the container was bent and removed, and an air hole was formed in the bottom. Then, the container was inverted and the contents were placed on a plate.

[0003]

However, recently,
Due to environmental conservation problems, cup-shaped paper containers have been used. However, since the cup-shaped paper container is not provided with a means for opening an air hole at the bottom, it is troublesome to open the air hole at the bottom with a device such as a needle during use.

The present invention solves the above-mentioned problem of the conventional cup-shaped paper container, and eliminates the trouble of opening an air hole at the bottom with another device such as a needle at the time of use. The present invention is to provide a cup-shaped composite container for dessert foods, which has no problem and has a high commercial value.

[0005]

Means for Solving the Problems A first invention of the present invention is:
A cup-shaped paper container made of a laminated material mainly composed of a paper layer and having a synthetic resin layer on the inner surface side or the inner and outer surfaces is mounted in an injection molding die in advance, and the synthetic resin melted in the mold is injected into the die. As shown in FIGS. 1 (a) and 1 (b), in a cup-shaped composite container in which a reinforcing frame is integrally formed on an opening peripheral portion, a bonding end surface portion, and a bottom annular portion of the cup-shaped paper container, An opening rod penetrating hole (121) is provided in the bottom (120) of the paper container (100), and the opening rod penetrating hole is attached to the lower surface of the bottom annular part (230) of the reinforcing frame (200). An opening bar (231) capable of opening an air hole is provided through
A cup-shaped composite container (10), characterized in that the lower end of the opening bar projects downward inward from the bottom.

According to a second aspect of the present invention, as shown in FIG. 1C, a thin fragile portion (23) is formed around the opening rod (231).
2) to form a bottom annular portion (23) of the reinforcing frame (200).
The cup-shaped composite container (10) according to the first invention, which is attached to (0).

In a third aspect of the present invention, the shape of the bottom annular portion of the reinforcing frame is formed in a decorative shape.
It is a cup-shaped composite container according to the invention.

[0008]

According to the cup-shaped composite container of the present invention, an opening rod that forms a thin-walled weak portion around the periphery and hangs down to the lower surface is formed at the air hole forming position of the bottom annular portion of the reinforcing frame integrally formed on the inner surface of the cup. The paper container is provided so as to penetrate through the opening rod penetration hole at the bottom of the container and protrude downward inside the bottom of the container. For this reason, when necessary, the air hole can be opened in the bottom of the cup-shaped composite container by removing the opening rod from the bottom annular portion by bending the opening rod protruding downward from the bottom.

Further, in the cup-shaped composite container of the present invention in which the bottom annular portion of the reinforcing frame has a decorative shape, since the upper part of the contents taken out of the container has a decorative shape, the commercial value of the product can be increased. .

Since the total amount of plastic used in the cup-shaped composite container of the present invention is extremely small as compared with the conventional cup-shaped plastic container, there is no problem in terms of environmental protection.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A cup-shaped composite container (1
1) As shown in FIGS. 1 (a) and 1 (b), the lower part (120) is made of a laminated material mainly composed of a paper layer and has an open upper side.
Cup-shaped paper container (10)
0) and an opening rod (231) penetrating the opening rod penetration hole.
A reinforcing frame integrally formed on the inner surface of the container (200)
It consists of: The reinforcing frame includes an opening peripheral portion (210) provided in an annular shape around the opening of the cup-shaped paper container, and a bonding end covering portion (220) for covering a bonding portion of the laminated material of the body. An annular bottom annular portion (23) provided on the inner surface along the seam of the trunk portion and the bottom portion and having an opening bar.
0). The opening rod attached to the bottom annular portion penetrates through the opening rod penetrating hole of the cup-shaped paper container so that the lower end protrudes downward inside the bottom portion, and an air hole is provided in the bottom annular portion so as to be openable. It is.

Further, the cup-shaped paper container is made of a laminated material mainly composed of a paper layer and having a synthetic resin layer on the inner surface side or the inner and outer surfaces of the container. The part is opened upward and an opening is formed at the upper end, a circular bottom member is combined below the trunk, and the lower periphery of the trunk and the periphery of the bottom are tightened in a heated state and the trunk and the bottom are joined together. Are integrated. The laminated material is formed by laminating various synthetic resin layers, metal layers, metal deposited layers, and the like mainly on a paper layer according to the purpose of use of the container.

The method of integrally forming the reinforcing frame at a predetermined position of the cup-shaped paper container is based on an insert injection molding method, and a cup-shaped paper container having an opening bar penetrating hole at the bottom is inserted and arranged in a mold in advance. After that, the hot-melt synthetic resin is injected to form the opening peripheral portion, the bonding end portion covering portion and the bottom annular portion hanging down from the opening bar, and at the same time heat-sealing to a predetermined position of the cup-shaped paper container. It is formed. Therefore, the synthetic resin that forms the opening peripheral portion, the bonding end portion covering portion and the bottom annular portion, and the synthetic resin layer on the inner surface side or the inner and outer surfaces of the container of the laminated material of the cup-shaped paper container are mutually heat-sealed. It is necessary to use a compatible material, and it is preferable to use the same resin or the same type of resin. And the periphery of the opening,
High-density polyethylene, polypropylene, or the like is usually used as the injection molding resin that forms the bonding end covering portion and the bottom annular portion.

In order to provide an opening bar capable of opening an air hole in the bottom annular portion of the reinforcing frame, for example, as shown in FIG. The fragile portions (23, 234)
2) is formed, and an opening bar is vertically provided on the lower surface of the bottom annular portion.

The bottom annular portion of the reinforcing frame can take various decorative shapes such as petals. When the contents are taken out, as shown in FIG. The contents can be beautifully placed on the plate by the decorative shape (21).

The above-described cup-shaped composite container of the present invention is loaded into a hopper of a filling machine, filled with semi-solid dessert foods such as pudding, jelly and yokan, and then placed on the upper surface of the peripheral edge of the opening of the reinforcing frame. For example, it is sealed by a heat sealing method using a circular sealing sheet having an opening piece made of a laminated material having a synthetic resin layer on both sides of an aluminum foil.

Then, after the circulation process, when the consumer takes out the contents, first, the sealing sheet at the opening for sealing the cup-shaped composite container is peeled off, and then, it protrudes inside the bottom. After the opening rod is bent and removed to form an air hole at the bottom, the container is inverted and the contents are placed on a plate.

[0018]

The cup-shaped composite container of the present invention, when the opening rod protruding inside the bottom of the container is removed by bending, the air hole penetrates the bottom, so that the container is inverted and the contents can be easily inverted. Can be served on a plate. Also, if necessary, if the shape of the bottom annular portion of the reinforcing frame is made into a decorative shape such as a petal, the contents taken out from the container will have a decorative shape and can be beautifully arranged on a plate, and the product Product value can be increased. In addition, the cup-shaped composite container of the present invention uses only a small amount of plastic, so that there is no concern about environmental conservation problems.

[Brief description of the drawings]

FIG. 1 (a) is a perspective view of a cup-shaped composite container according to one embodiment of the present invention, FIG. 1 (b) is a cross-sectional view thereof,
(C) is an enlarged view of the part A.

FIG. 2 is a perspective view showing a state of contents taken out of the cup-shaped composite container of one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 cup-shaped composite container 20 contents 21 decorative cup-shaped paper container 110 body 120 bottom 121 penetrating hole 200 bar reinforcing frame 210 peripheral edge of opening Part 220: Bonded end covering part 230: Bottom annular part 231: Opening rod 232: Thin-walled weak part 233, 234: V-shaped cut

Claims (3)

[Claims] 1. A synthetic container in which a cup-shaped paper container made of a laminated material mainly composed of a paper layer and having a synthetic resin layer on an inner surface side or an inner and outer surface is mounted in an injection mold in advance, and is thermally melted in the mold. In a cup-shaped composite container in which a resin is injected to form a reinforcing frame integrally with an opening peripheral portion, a bonding end surface portion, and a bottom annular portion of the cup-shaped paper container, an opening rod penetrating hole is formed in a bottom portion of the cup-shaped paper container. The opening rod penetrating hole is provided with an opening rod attached to the lower surface of the bottom annular portion of the reinforcing frame and capable of opening an air hole in the bottom annular portion. A cup-shaped composite container characterized by being protruded. 2. The cup-shaped composite container according to claim 1, wherein a thin brittle portion is formed around the opening bar and attached to a bottom annular portion of the reinforcing frame. 3. The cup-shaped composite container according to claim 1, wherein the shape of the bottom annular portion of the reinforcing frame is formed in a decorative shape.