JPH0248348Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a can-shaped packaging container with a so-called double wall structure, which comprises a cup-shaped exterior body and a cup-shaped interior body made of a synthetic resin material such as a foamed material. The present invention relates to a can-shaped packaging container that is most suitable for instant noodles that are eaten on the spot by directly pouring boiling water into the packaging container.

Recently, can-shaped packaging containers have been attracting attention, in which a full-open type metal top lid is tightly wrapped around an exterior body made of a resin sheet molded product with high barrier properties, which is advantageous in terms of cost and transportation.

The inventors have continued to improve this type of container,
Utility Application No. 183239/1982 and Application No. 189701/1983 have already been submitted.

All of the above-described containers have a cup-shaped exterior body molded from a resin sheet with high barrier properties, a lid body made of a material with high barrier properties that is wrapped and fitted around this exterior body, and a lid inside the exterior body. It consists of a cup-shaped inner body made of synthetic resin that is inserted as a reinforcing material, but because of this double wall structure, liquid may seep into the gap between the inner body and the outer body, and the fixation of the inner body may be affected. There were drawbacks such as instability and confusion.

The present invention is an improvement on this, and has a canned shape that is hygienic and easy to handle as an instant tableware, stably fixes the inner body, and easily prevents deformation of this type of container during gas exchange. The purpose is to provide packaging containers.

Hereinafter, the present invention will be explained based on the drawings.

Figures 1 and 2 show an embodiment of the container of the present invention.
FIG. 1 is a perspective view showing the state before assembly separated into parts, and FIG. 2 is a longitudinal sectional view showing the internal structure after assembly.

In the figure, 1 is an exterior body, 2 is a lid body, 3 is an interior body, 4 is a content (snack noodles in this example), and 5 is an adhesive part.

The exterior body 1 shown in this example is a resin sheet molded can made by vacuum forming a multilayer sheet made of laminated films of styrene, vinylidene chloride, polyethylene, etc. into a tapered, taped shape to provide barrier properties. . A flange piece 7 is provided on the upper edge of the exterior body 1 to be seamed with a folded piece 6 for seaming on the peripheral edge of the lid body 2 . The lid body 2 is made of metal and is a normal full-open type easy-open top lid.

The interior body 3 is a hard or semi-rigid foamed resin molded product shaped like a pot, and its shape has an outer diameter that can fit snugly into the inner diameter of the exterior body 1, and in particular, the upper end periphery is shaped like an outer shell. The inner body 3 is formed at a height that is substantially flush with the upper edge of the body 1, that is, at a height that comes into contact with the lower surface of the lid body 2, so that the pressing force from above generated during winding is absorbed by the inner body 3.
It is configured to prevent the peripheral wall of the exterior body 1 from buckling. This inner body 3 is filled with snack noodles 4 that have been dried and compacted into a predetermined shape.

Further, the outer upper edge circumferential surface of the interior body 3 and the inner upper edge circumferential surface of the exterior body 1 are adhered to each other without any gap, forming a bonded portion 5. This adhesion is
Any bonding means such as ultrasonic welding, heat fusion, or adhesive may be used.

Due to the adhesive portion 5, the slight gap 8 between the interior body 3 and the exterior body 1 is sealed at its upper end. At the same time, the interior body 3 and the exterior body 1
This means that it is fixed at this adhesive part 5.

As explained above, according to the container of the present invention, a cup-shaped inner body made of a hard or semi-hard synthetic resin is fitted into the exterior body as a reinforcing material and is formed at a height such that the upper edge comes into contact with the bottom surface of the lid body. As a result, the inner body receives the pressing force from above during winding, thereby preventing the peripheral wall of the outer body from buckling. In addition, the outer upper edge circumferential surface of the interior body and the inner upper edge circumferential surface of the exterior body are bonded all the way around without any gaps.
Since it is configured to seal the gap between the inner body and the outer body at the upper end, for example, even when boiling water is poured directly into the container to eat instant noodles on the spot, Hot water does not leak into the gap between the interior body and the exterior body, or hot water does not directly enter the gap. Therefore, the heat insulation effect of the interior body is not diminished. In addition, the container of the present invention can also be used to fill and preserve fluids and foods containing liquids.

In addition, during gas replacement for long-term storage, the filling gas does not flow into the above-mentioned gap, which prevents swelling of the exterior body due to increased internal pressure, especially the bulging phenomenon that tends to occur on the bottom wall due to the cup shape. inevitably can be prevented. Similarly, deformation of the exterior body can be naturally prevented even when the pressure is reduced to remove oxygen from the container.

Furthermore, since the exterior body and the interior body are fixed at the bonded portion, the fixed state is more stable than when bonding other parts, such as the bottom wall portions.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the container of the present invention.
FIG. 1 is a perspective view showing the state before assembly separated into parts, and FIG. 2 is a longitudinal sectional view showing the internal structure after assembly. 1...Exterior body, 2...Lid body, 3...Interior body, 5
...Adhesive part.

Claims (1)

[Scope of utility model registration request] In a can-shaped packaging container consisting of a cup-shaped exterior body molded from a resin sheet with high barrier properties and a lid body made of a material with high barrier properties that is wrapped and fitted around this exterior body; reinforcement is provided within the exterior body. By inserting a cup-shaped inner body made of hard or semi-hard synthetic resin, the upper edge of which is formed at a height such that the upper edge comes into contact with the lower surface of the lid, the pressing force when tightening the lid is reduced by this inner body. At the same time, the outer upper edge circumferential surface of this inner body and the inner upper edge circumferential surface of the above-mentioned exterior body are bonded all the way around without any gap, and the gap between the inner body and the outer body is closed at the upper end. A canned packaging container characterized by being sealed.