JPH04128277U - insulated shipping container - Google Patents

Abstract

(57) [Summary] [Structure] In a product formed by foaming plastic between the inner and outer double shells 3 and 4, the sides of the shells 3 and 4 and the plastic foam 6 are connected by adhesive urethane foam 12.
[Effect] The inner shell 3 and the outer shell 4 and the plastic foam 6 are glued or adhered to each other, so even if they are peeled off due to an impact, the adhesive strength or Maintains the bonded state with adhesive strength,
The inner shell 3 and the outer shell 4 are never separated.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an insulated transport container.

0002

[Conventional technology]

Conventionally, this type of insulated transport container used foamed plastic between the inner and outer double shells. Insulated shipping containers made of plastic are widely used.

0003 In other words, the inner and outer shells are made of plastic such as polyethylene or polypropylene. This is then fitted and the space between them is filled with foam hardening resin such as polyurethane. It is made by injecting a liquid and causing it to foam and harden.

0004 This structure requires the use of inexpensive materials to create a fairly large-capacity container. It also has good heat insulation properties and is widely used.

[0005]

[Problem that the idea aims to solve]

However, in this structure, the shell material is polyethylene or polypropylene. Polyolefin plastics such as pyrene are used, and foams are Since polyurethane is usually used, it tends to have poor adhesion between the shell and the foam. There are some drawbacks.

[0006] In the container having the above structure, the inner and outer shells are simply fitted together, They are integrated with a plastic foam between them. Therefore, the shell and foam If the space between the shells separates, the bond between the inner and outer shells is lost and they may separate. . Particularly if the product is subjected to harsh handling during transportation, it may easily separate due to impact. It's mauno.

[0007] In addition, by changing the materials of both, the adhesiveness between the shell and the foam is improved. Although it is possible to use foam, it is expensive, and if the adhesiveness is excessively good, foaming The entire container may change due to distortion of the foam during shaping or when hot items are placed in it during use. shape and dimensional accuracy becomes unstable.

[0008] The present invention was developed in view of the above circumstances, and it is possible to separate the inner and outer shells. The purpose is to provide an insulated transport container that is free of heat, is inexpensive, and has excellent dimensional accuracy. It is something.

[0009]

[Means to solve the problem]

Therefore, the insulated transport container of the present invention uses foamed plastic between the inner and outer double shells. In an insulated shipping container comprising: a plastic foam on the side wall of the shell; The contacting surface and the plastic foam are bonded or adhered to each other. That is.

0010 Moreover, as a more preferable configuration of the present invention, the plastic foam is foamed and hardened. polyurethane, and partially on the surface of the shell in contact with the plastic foam. After adhering the urethane foam through an adhesive, the polyurethane is foamed and hardened between the shells. It is something that is made to become.

[0011]

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

0012 Figure 1 shows an embodiment of the insulated transport container of the present invention, where 1 is the main body, 2 is the main body, and 2 is the It's a lid. The main body 1 has an inner shell 3 and an outer shell 4 fitted together to form a shell 5. The space between the inner shell 3 and the outer shell 4 is filled with a plastic foam 6. There is. Similarly, for the lid 2, a plastic foam 8 is filled inside the hollow shell 7. has been done.

[0013] As for the material of the main body 1, polypropylene is used for the inner shell 3 and outer shell 4. As the plastic foam 6, foam hardening polyurethane is used. There is.

[0014] FIG. 2 shows an enlarged view of the upper edge of the main body 1, starting from the upper edge of the inner shell 3. Ribs 10 and 11 are vertically provided at the outer end of the collar portion 9 that protrudes outward, and the ribs 10 and 1 The upper end of the outer shell 4 is fitted between the outer shells 1 and 1.

[0015] and on the outer surface of the upper end of the side wall of the inner shell 3 and the inner surface of the upper end of the side wall of the outer shell 4. In each case, a flexible urethane foam 12 is attached via an adhesive 13. . This flexible urethane foam 12 can be made using commercially available adhesive urethane foam tape. It can be used as is. In addition, soft urethane foam 12 is applied to the inner shell 3 and It may also be glued to the outer shell 4.

[0016] This soft urethane foam 12 is applied to the outer surface of the inner shell 3 and the inner surface of the outer shell 4. Although it may be pasted all around the circumference, it is possible that the plastic foam 6 may be damaged due to distortion or heat. In order to prevent the heat transport container from deforming, it is preferable to divide it into an appropriate number and paste it intermittently. Yes.

[0017] Furthermore, the flexible urethane foam 12 can be attached over a wide area of the side wall. However, as shown in the drawing, the position is slightly lower than the upper ends of the inner shell 3 and outer shell 4. The effect of this invention can be fully achieved by simply pasting it on the If it is too wide, the insulated transport container is likely to be deformed, which is not preferable. It is also pasted on the bottom. Even if you wear it, it has little effect.

[0018] Then, the inner shell 3 and outer shell 4 to which the soft urethane foam 12 is attached are fitted. to form a shell 5, and fill the void between the inner shell 3 and the outer shell 4 with foam hardening polyester. The urethane resin liquid is injected and foamed and hardened within the space to create the insulation transport of the present invention. Get a shipping container.

[0019] In addition, as another embodiment of the present invention, instead of the flexible urethane foam 12, a single-sided or You may attach double-sided adhesive tape or apply adhesive to the location. The same effect can be obtained.

[0020]

[Effect]

The operation of the present invention will be explained below based on the embodiments shown in the drawings. In this invention, the inner shell Soft urethane foam is placed on the surfaces of the body 3 and outer shell 4 that are in contact with the plastic foam 6. 12 is attached, so inject resin liquid into the space between the two shells 3 and 4 and foam. When cured, a part of the resin liquid becomes integrated with the flexible urethane foam 12, making it stronger. Tightly joined.

[0021] The adhesive 13 to which the soft urethane foam 12 is attached is made of soft urethane foam. a plastic foam 6 integrated with a foam 12 and an inner shell 3 or an outer shell 4; It intervenes between them and makes them stick together.

[0022] In this invention, normally the resin liquid is formed into a soft urethane foam in the process of foaming and curing. It penetrates into the bubbles of the foam 12 and takes in the soft urethane foam 12 to form an integrated plastic. Forms a stick foam 6, but does not strictly integrate depending on the foam curing situation Sometimes. However, the plastic foam 6 and the flexible urethane foam 12 Both are urethane-based materials and can be strongly bonded. Therefore, in this case, plus The tick foam 6, the inner shell 3, and the outer shell 4 are made of flexible urethane foam 12 and and adheres via the adhesive 13.

[0023] Also, instead of the soft urethane foam 12, double-sided adhesive tape or adhesive In the case where the agent is applied, these will be integrated with the plastic foam 6. However, when the plastic foam 6 is foamed and hardened, the double-sided adhesive The tape or adhesive adheres to the plastic foam 6 and the inner shell 3 and outer shell 6. The side shell body 4 and the plastic foam body 6 are connected via the double-sided adhesive tape or adhesive. It's sticky.

[0024]

[Effect of the idea]

Therefore, according to the invention, the plastic foam 6 and the inner shell 3 and Since the outer shell 4 is adhesive or adhered, the inner shell 3 and the outer shell 4 are connected to each other. Even if the tick foam 6 is peeled off due to impact, etc., the adhesive or glued part will not be damaged. They are joined at the same time and never completely separate. Especially the inner shell body 3 and the outer shell body 4 There is a large resistance in the direction of pulling out the inner shell 3 and outer shell 4, and the inner shell 3 and outer shell 4 separate. There is no.

[0025] In addition, adhesive urethane foam is pasted on the inner shell 3 and outer shell 4 to increase the adhesiveness. By making it lean, the manufacturing process is simplified and the urethane foam is mechanically It is also chemically integrated with the polyurethane foam 6 and bonded more firmly. I can do it.

[Brief explanation of drawings]

[Figure 1] Center vertical cross-sectional view of the insulated transport container of the present invention

[Fig. 2] Central vertical cross-sectional view of the main parts of the insulated transport container of the present invention

[Explanation of symbols]

3 Inner shell 4 Outer shell 6 Plastic foam 12 Soft urethane foam

Claims (2)

[Scope of utility model registration request] 1. A heat-insulating transport container made of foamed plastic between inner and outer double shells (3, 4), wherein the plastic foam (6) is formed on the side wall of the shell (3, 4).
A heat-insulating transport container, characterized in that the surface in contact with the plastic foam (6) is bonded or adhered to the plastic foam (6). 2. The plastic foam is foam-curable polyurethane, and after partially adhering urethane foam to the surface of the shell that contacts the plastic foam through an adhesive, polyurethane is applied between the shells. The insulating transport container according to claim 1, characterized in that it is formed by foaming and hardening.