JPH054670A - Heat-insulating container and manufacture thereof - Google Patents

Abstract

PURPOSE:To obtain a heat-insulating container with resources saved and a method for producing it. CONSTITUTION:A container body 5 is inserted as a thin film into a transparent basket-like body 1 to be a single body. Thus the basket-like body 1 assures heat insulation and mechanical strength and the container body 5 assures water- tightness, so that the container is not hot when a hot substance is put into the container body 5 nor cool when a cool substance is put. In addition resources can be saved through reduction of a heat-insulating material. Further since the body 1 is transparent, a label can be clearly seen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating container suitable for containing hot water or cold objects and a method for manufacturing the same.

[0002]

2. Description of the Related Art Containers for instant food, coffee or very cold beverages, represented by cup ramen, have been devised to insulate themselves in consideration of risk of burns and ease of holding.

For example, a cup ramen or a coffee container is made of styrofoam or a double container, and a container that can hold a cold product is made of a thick material.

Further, since the strength of the container is required for each content, the material is selected according to the strength condition and the shape is given rigidity.

[0005]

Therefore, the container becomes expensive and consumes a lot of high-quality materials, which is not preferable in terms of resource saving measures.

An object of the present invention is to provide a heat insulating container which can be manufactured at low cost and saves resources.

[0007]

The constitution of the present invention is as follows.

1. A plastic container main body is attached to the male mold, a female mold having a groove for a skeleton on the inner surface is closed and fitted to the male mold, and a plastic molten material is injected into the cavity to mold the skeleton at the same time. Integrate with the container main body, open the mold and take out the molding container,
A method of manufacturing an insulated container consisting of steps.

2. A heat-insulating container comprising a container main body made of a plastic film and a basket-shaped transparent body integrally formed outside the container main body.

The heights and intervals of the ribs of the basket-shaped body are free, but the heights are determined in relation to the heat insulating effect, and the conditions are that the fingertips do not come in between. The rib pattern may be linear, corrugated, ring-shaped, or intermittent, and the rib pattern is arbitrary.

The material of the container main body is selected depending on the contents, but since the mechanical strength is guaranteed by the body, it can be made as thin as the minimum necessary for resource saving.

The label of the container may be directly printed on the container main body, or a separate label may be prepared and wound on the outside of the container main body to injection-mold the body. In addition, it is desirable that the surface of the container main body and the material of the skeleton have fusibility.

[0013]

When the hot water is poured into the main body of the container, the temperature of the hot water is not transmitted to the hands due to the ribs of the basket-shaped body and the gaps between the ribs. As a result, it is not hot or cold even if the container is directly held.

[0014]

EXAMPLE FIG. 1 shows an example of the container of the present invention. Code 1
Is a plastic skeleton, and this skeleton has a cage-like structure in which ribs 2 are radially projected on the outer peripheral surface.
Extends from the outer peripheral surface to the bottom 4 as shown in FIG. However, the rib 2 may be only the outer peripheral surface depending on the contents. Three
Is a connecting rib formed in the middle of the rib 2.

Reference numeral 5 denotes a watertight container main body inserted inside the skeleton 1, and the material of the container main body 5 is selected according to the contents. However, since the mechanical strength is guaranteed by the body 1, the strength of the container main body 5 may be minimum.

FIG. 4 shows an embodiment in which the rib 2 of the body 1 is formed in a ring shape.

FIG. 5 shows a method for manufacturing a heat insulating container according to the present invention. A is a male mold, and the container main body 5 is attached to this male mold A, and a female mold B having a groove C for the rib 2 is closed on the outside thereof, and the molten material is placed in the cavity D as indicated by an arrow. After injection, the molds A and B are opened after molding, and the integrally molded container is taken out.

At the time of molding, the label 6 may be wound on the outside of the container body 5 in advance as shown in FIG.

[0019]

The present invention is constructed as described above and has the following effects.

A. Since ribs are formed on the outer peripheral surface of the body,
The ribs have a heat insulating effect and are not hot or cold when the container is held in the hand.

B. Since the mechanical strength of the container is guaranteed by the body, the container body may be thin. As a result, the material can be saved, and the manufacturing cost can be reduced.

C. By saving the material mainly of the container and saving the material generated by forming the body into a basket shape, it is possible to achieve resource saving and also reduce waste pollution.

D. Since the body is made of transparent material, the label looks good.

E. The container design can be diversified.

[Brief description of drawings]

FIG. 1 is a perspective view of a heat insulating container according to the present invention.

FIG. 2 is a sectional view taken along the line AA ′.

FIG. 3 is a sectional view taken along line BB ′.

FIG. 4 is a diagram of another embodiment.

FIG. 5 is an explanatory view of a method for manufacturing a heat insulating container.

FIG. 6 is a sectional view taken along the line CC ′.

FIG. 7 is an explanatory view of an embodiment in which a label is separately arranged outside the container main body.

[Explanation of symbols]

1 body 2 ribs 3 connecting ribs 4 bottom 5 containers

Claims (3)

[Claims] 1. A male container main body is attached to a male mold, and a male mold having a groove for a skeleton formed on the inner surface is closed and fitted to the male mold, and a plastic molten material is injected into a cavity. A method for producing a heat-insulating container, which comprises the steps of molding a body and at the same time integrating with the container main body, opening a mold and taking out the molded container. 2. The method for producing a heat-insulated container according to claim 1, wherein a label is wound on the outside of the container body, and the body is injection-molded outside the label. 3. A heat insulating container comprising a container main body made of a plastic film, and a cage-shaped transparent body integrally formed outside the container main body.