JPH02139339A - Assembly type air-tight vessel set - Google Patents

Abstract

PURPOSE:To assemble a highly air-tight box on using by utilizing a soft material with an elastic fixing frame, composed of a sheet of side wall material. a bottom material with a little longer outer surface than the inner surface of said side wall and a lid material. CONSTITUTION:A side wall 1 wound in a little smaller radius than the inner surface of a fixed frame 4 is inserted into said fixed frame 4 and hence the side wall 1 expands cylindrically to fully attach to the inner surface of the fixed frame 4 due to the elasticity of the material when left from hands. A lid material 5 is fitted to the side wall of the cylinder thereafter. In this state a stable cylinder form is kept and hence an outer lid 6 is fitted after the contents are charged. With the side wall 1 in contact with the fixed frame 4, an one side card board 2 is bonded to the outer face of a heat-insulation material 3 made of a formed substance, and on the periphery thereof the material of the fixed frame is closely attached. The material of the fixed frame 4 is a laminate of foamed styrene sheet 10 and polyvinyl chloride film 11. On inserting the lid material, it is easily attachable due to the widen fixed frame 4 and after its insertion the side wall 1 and the lid material 5, 6 can be more closely fitted due to the constricted fixed frame 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an assembly type airtight container cent that can be disassembled into small pieces so as to be stacked for distribution and assembled with high airtightness when used. This assembly type airtight container cent is used not only as a variety of packaging containers but also as an insulated container, and is used for packaging small portions of fresh foods and various products that need to be kept hot or cold at the retail stage.

[Conventional technology]

Conventionally, molded containers made of plastic foam have been used to keep fresh foods such as ice cream, frozen desserts, fresh fish, and meat cold. Although these containers can achieve their intended purpose due to the insulating effect of closed-cell plastic foam, their biggest drawback is that they are extremely bulky and cannot be folded when empty before or after use. It occupies a large space and is sold in large quantities (!I-
It was difficult to prepare. In addition, the heat insulating properties were not satisfactory as the fitting was incomplete and some parts of the heat insulating material were missing.

In Japanese Patent Application Laid-Open No. 58-126988, the present inventor
The container is disassembled into a cylindrical side wall that has a heat insulating material on the inner surface and is easy to fold, and a bottom material and lid material that can be fitted into it. By having a structure that presses against each other, it is not bulky,
In addition, we have disclosed an assembly type airtight container that has insulation properties and airtightness comparable to those of conventional products.

[Technical problem to be solved by the invention]

The above-mentioned assembly type airtight container is not bulky because the side wall member is folded during transportation and storage, and it has excellent heat insulation properties. There was a tendency to leave a slight void when the lid material and bottom material were fitted together. The present invention does not cause such creases, makes it easier to fit the bottom material and the lid material, and further improves airtightness.
Another object of the present invention is to provide an assembly type container cent that can be used for a wide range of applications.

[Means for Solving the Problem] The present invention includes a fixed frame, and a sheet-like side wall material that can be rolled up in at least one direction within the fixed frame and has rigidity in a direction perpendicular to the rolled-up direction. When the side wall material is inserted into the fixed frame in an annular manner to form a cylindrical side wall,
This airtight container set includes a bottom material having an outer periphery slightly longer than the inner periphery of the side wall, and a lid material, and is characterized in that the fixed frame is made of an elastic and flexible material.

When the side wall material of the present invention is formed into a cylindrical shape, it is a material that has sufficient rigidity in the depth direction and flexibility that can be rolled in the circumferential direction. Among such materials, single-sided corrugated paper is the most preferable material because it has some heat insulating properties. Cardboard is a material that is both rigid in the depth direction and flexible in the circumferential direction, but the edges of the paper are reinforced with resin to prevent the N'fci4 from being crushed when the bottom material and lid material are pushed in. Material is preferred. A plastic sheet can also be used, but it is necessary to select a material with a hardness that simultaneously satisfies the requirements for rigidity in the depth direction and flexibility in the circumferential direction.

A plastic sheet material having a structure similar to a single-sided corrugated board, in which thick portions are provided in a striped manner in the depth direction or a flat surface and a corrugated surface are laminated, is more preferable. It is also possible to use a material in which a flexible film and rigid rods are arranged and fixed in a blind shape using strings. It is sufficient that the flexibility in the circumferential direction is such that it can be easily formed into a cylindrical shape.

In order to provide insulation to the container, a flexible closed-cell foam is attached to the inside of the material. An issue like this? As the fD body, closed-cell foams such as polyethylene, vopropylene, and polyvinyl chloride are used. Alternatively, a nonwoven fabric or the like may be attached.

In order to assemble the container more sturdily, an adhesive may be applied in advance to the overlapping portions when forming the side wall material into a cylindrical shape. The adhesive layer needs to be protected with a female pattern paper, etc.
You can apply release paper one sheet at a time, but in order to expose the parts of the side wall material to which the adhesive is to be applied, a large number of side wall materials are stacked one on top of the other with a slight shift, and the adhesive is applied all at once to the exposed surfaces. may be applied, and the adhesive-coated surfaces may be covered together with a sheet of release paper.

The fixing frame is previously formed into an annular shape to match the outer circumference of the completed container. Alternatively, it is processed in advance so that it has a predetermined circumference when fixed. The material should have a slight elasticity, be strong enough to reliably protect the side walls from opening, and preferably be flexible enough to be folded for storage. The degree of elasticity varies depending on the purpose and size of the container, but in general, the entire fixed frame can be stretched 10 cm with both hands.
The length is about 0.5 to 3 mm. For example, a laminate of a foamed plastic sheet, nonwoven fabric, low-elastic rubber, etc., and paper, plastic sheet, cloth, etc. is preferable. This slight rubber elasticity causes the cylindrical body to expand when inserting the bottom material or lid material, making it easier to insert the material, and also applies compressive force to the side wall material after assembly, which improves airtightness with the lid material or bottom material. will improve.

If the material of the fixed frame is somewhat lacking in toughness, it may be made thicker, and the width may be so thick that the side walls are hidden from view. It is also possible to create a pattern by deleting part of the wide fixed frame. Furthermore, the container main body may be used vertically or horizontally, and when used vertically, a support body that protects the bottom of the container may extend from the opposing lower ends of the fixed frame. When used horizontally, the same stress is applied to the bottom material and the lid material, and a carrying portion as shown in FIG. 1 may extend from both ends of the fixed frame.

The material of the bottom material and lid material is polypropylene, polyethylene,
Any rigid material can be used, such as foamed plastics such as polyvinyl chloride and polystyrene, non-foamed plastics, cardboard, and metal plates. Closed cell foams are preferred for providing insulation to the container. Furthermore, a composite plate obtained by combining these materials, or a material laminated with other materials such as metal foil, cloth, and thin paper may also be used.

Its shape requires that the inserted portion have an outer circumference slightly larger than the inner circumference of the side wall, and the shape is stabilized by pushing either the bottom material or the lid material into the side wall. In addition, considering the ease of opening and closing, if the bottom material and lid material are made of thick material, it is preferable to have a flange on the outside of the inserted part, and if the diameter of the flange matches the outer diameter of the side wall, it will be in a sealed state. It is even more preferable to have a cylindrical shape with the same thickness. In the case of a bottom material and a lid material made of a plate-shaped material, the bottom material consists of a recess-shaped inserted part having an outer circumference slightly larger than the inner circumference of the side wall, and a collar extending from this inserted part. The lid material has the advantage of being stackable and less bulky for storage. In addition, the outer periphery of the recessed portion to be inserted comes into close contact with the inner periphery of the side wall to improve airtightness.

The shape of the part to be inserted should preferably be circular or oval, without any angular parts, and the length of the outer periphery should be slightly longer than the inner periphery of the side wall.

If the bottom material and the lid material are oval, the container can also be made into an oval cylindrical shape. It is preferable that the bottom material and the lid material have substantially the same shape. In addition, those in which the diameter of the tip of the bottom material or lid material is slightly reduced are easy to handle with little resistance during insertion and assembly. It is preferable that the lid material be provided with a known handle or a flange to facilitate opening and closing.

Furthermore, if metal foil such as aluminum foil is laminated on the insulating side walls, bottom material, and lid material, radiant heat can be blocked and an even more insulating effect can be obtained.

[Effect]

In the present invention, since the side wall material, bottom material and lid material are separated, the container is not bulky for use in a retail store, and a large number of containers can be prepared even in a small store. In addition, the side wall material can be spread out into a sheet for storage, so there is no folding.
There is no possibility that a gap will be formed between the side wall and the bottom material or the lid material, impeding airtightness or damaging the appearance. Since the outer circumference of the bottom material and the lid material are slightly longer than the inner circumference of the side wall, when the bottom material and the lid material are inserted into the side wall, the side wall and the outer periphery of the bottom material and the lid material will press against each other, so that they will not completely overlap each other. A high degree of airtightness and heat retention is maintained.

As a result, a force is applied to the annular side wall to return it to a sheet shape, but by limiting the outer diameter with the fixed frame, the side wall is pressed from the outside and the inside, making it possible to maintain the intended shape.

In particular, the present invention imparts rubber elasticity to this fixed frame.
When inserting the bottom material and the lid material, the fixed frame stretches to facilitate insertion, and after insertion, compressive force is applied to the side wall due to the elasticity of the fixed frame, further improving airtightness.

〔Example〕

FIG. 1 is a partially cutaway perspective view showing a semi-assembled state of a take-home container for frozen desserts, and FIG. 2 is an enlarged sectional view of the portion indicated by the dashed line in FIG. 1.

(2) is a side wall, and polyethylene foam was used as a heat insulating material 3 on the inner surface of the single-sided corrugated paperboard 2. 4 is a fixed frame.

The side wall l is made longer than the inner circumference of the fixed frame 4 by an amount of overlap. The overlapping portion was gradually pressed so that the tip became flat. As a result, a cylindrical body having the same thickness throughout was formed in the assembled state.

In this example, since the cylindrical body consisting of the side wall was used horizontally, two lid members 5.6 of the same shape were used.

The lid material 5 is in a state fitted to the side wall 1, and the lid material 6 is in a state before being fitted. Reference numeral 7 denotes a handheld portion provided on the fixed frame 4.

In use, insert the side wall 1 rolled up to a smaller size than the inner circumference of the fixed frame 4 into the fixed frame 4, and when you release your hand, the elasticity of the material allows the side wall 1 to spread almost to the inner circumference of the fixed frame 4, forming a tube. It becomes like this. After that, the lid member 5 is fitted to the cylindrical side wall. Since a stable cylindrical shape was maintained in this state, the lid member 6 was fitted after the contents were charged. When the side wall 1 and the fixed frame 4 are in close contact with each other, as shown in FIG. There is. 8 is a liner of the single-sided corrugated paperboard 2, and 9 is a corrugated portion. The material of the fixed frame 4 is a laminate of a foamed polystyrene sheet 10 and a polyvinyl chloride film 11.

The fixed frame material of this example has a width of 10 cm, and when pulled with both hands of a normal adult, it becomes 2 mm per 10 crrl of length.
When I extended it and let go, it completely restored. Therefore, when inserting the lid material, the fixed frame 4 expands to facilitate insertion, and after insertion, the fixed frame 4 contracts to tighten the fit between the side wall 1 and the lid material 5.6, thereby sealing the lid. sex has improved.

〔Effect of the invention〕

The assembly type airtight container of the present invention is not bulky when stored or distributed when empty, does not fold easily, can be assembled and used extremely easily, and has improved sealing performance.

In addition, if a heat insulating material is used for the side walls, bottom material and lid material, an excellent heat insulating container can be obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view with a partial cutout showing a semi-assembled state of a take-out container for frozen desserts, and FIG. 2 is an enlarged view of the portion indicated by the dashed line in FIG. 1. FIG. In the drawings, symbol ■ is the side wall, 2 is single-sided corrugated paper, 3 is the insulation material, 4 is the fixed frame, 5.6 is the lid material, 7 is the handbag, 8 is the liner, 9 is the corrugate, 10 is the polystyrene foam sheet, 11 is It is a polyvinyl chloride film. Patent applicant: Asahi Kasei Industries, Ltd.

Claims (1)

[Claims] a fixed frame; a sheet-like side wall material that can be rolled into the fixed frame in at least one direction and has rigidity in a direction perpendicular to the rolled-in direction; and the side wall material is inserted into the fixed frame in an annular manner. An airtight container set comprising a bottom material having an outer periphery slightly longer than the inner periphery of the side wall and a lid material when a cylindrical side wall is formed, the fixed frame being made of an elastic flexible material. An assembly type airtight container set that is characterized by: