JPS5811212Y2 - Thermal containers such as water bottles - Google Patents

Description

[Detailed description of the invention] This invention aims to obtain a heat-retaining container such as a water bottle that has a very high heat-retaining effect.

Conventionally, vacuum double bottles have been generally used for this type of bottle in consideration of the heat retention effect.

In addition, some combinations of synthetic resin inner containers and heat insulating materials are used, but they have poor heat retention effects and poor integrity between the inner containers and the heat insulating materials, and after long-term use, the inner containers and the heat insulators may deteriorate. This tends to cause deterioration of insulation properties, such as separation of materials.

Therefore, this invention aims to eliminate the above-mentioned drawbacks and provide an excellent heat insulating container such as a water bottle that is easy to process and has durability. An inner container made of a non-foamed resin molded product made of a combination or a blend of this and other thermoplastic resins, and a foamed resin molded product made of a styrene-maleic anhydride copolymer or a blended product of this and other thermoplastic resins. It is characterized in that the inner container and the heat insulating material are encapsulated in the outer case by heat-sealing the inner container and the heat insulating material together when the heat insulating material is molded.

Next, embodiments of this invention will be illustrated below with reference to the drawings.

1 is an inner container, and this inner container 1 contains 2 maleic anhydrides.
It is made of a styrene-maleic anhydride copolymer composed of ~25% by weight and 98~75% by weight of styrene, or a blend of this and other thermoplastic resins (e.g. polybutadiene), and is used as a non-foamed resin molded product. It is formed so that

In addition, in the case of the above-mentioned blended product with other thermoplastic resins, maleic anhydride is comprised in an amount of 2 to 25% by weight.

2 is a heat insulating material formed of a foamed resin molded product made of the same material as the inner container 1, that is, a styrene-maleic anhydride copolymer or a blend of this and other thermoplastic resins (for example, polybutadiene). It is.

In order to heat-seal the heat insulating material 2 to the outer periphery of the inner container 1, the inner container 1 is set in a foaming mold, and the heat insulating material 2 is
The most convenient method is to integrally join the inner container 1 to the inner container 1 while performing foam molding (see FIGS. 2 and 4).

3 is an exterior body having a bottom and a bottom cover 4, and is made of a non-foamed synthetic resin molded product.

In the embodiment shown in FIG. 1, the exterior body 3 is open at the bottom and has a screw on the lower layer side. The upper surface and circumferential side of the heat insulating material 2 are covered, and the bottom cover 4 is screwed onto the lower layer side of the exterior body 3 from the bottom.

In the ice bucket shown in FIG. 3, an outer case 3 having a bottom lid 4 is inserted from the bottom of the heat insulating material 2, and the upper end of the outer case 3 and the upper end of the inner container 1 are engaged to enclose the heat insulating material 2.

If glass fiber is mixed with the above-mentioned heat insulating material 2, it becomes a shock-resistant heat insulating material.

In Figure 1, 6 is a cap screwed onto the spout 5, 7 is an outer lid screwed onto the upper end of the exterior body 1, 8 is an inner lid, 9 is a hanging string, 10 is a lid in Figure 3, and 11 is a handle. It is.

As described above, this invention forms the inner container 1 into a non-foamed molded product and the heat insulating material 2 into a foamed molded product using a styrene-maleic anhydride copolymer or a blend of this and other thermoplastic resins. Compared to general polystyrene foam, its heat resistance is 20 to 25 degrees Celsius or higher, and even when 100 degrees Celsius hot water is injected, the inner container 1 and the insulation material 2 heat-fused to its outside are sufficiently heat resistant. In addition, the integrity of the two by heat fusion is extremely strengthened, and there is no possibility of separation from each other, no deterioration of heat resistance over time, and no deterioration of heat resistance.

In addition, this heat insulating material 2 exhibits a high heat insulation effect, eliminating the need for a double vacuum bottle and obtaining a good heat insulation effect, resulting in extremely good heat retention.

As mentioned above, because the heat resistance is good and the resins are reinforced together, it is possible to heat-fuse the inner container 1 and the heat insulating material 2, which is strong, and because they are integrated, the heat insulating container will not shock. Even if the heavy inner container 1 containing liquid is exposed to heat insulating material 2,
The durability of the heat insulating material 2 is increased since there is no collision with the heat insulating material 2.

Moreover, this heat-sealing process is very simple because the non-foamed resin and the foamed resin are made of the same material, so it is easy to fuse and integrate them.

Next, the foam insulation material 2 is preferably made of mixed acid with glass fiber.
By mixing glass fiber, the heat insulating material 2 becomes even stronger against impact.

As described above, a heat-retaining container with excellent heat resistance and heat insulation can be easily provided.

[Brief explanation of the drawing]

The figures illustrate the embodiment of this invention. Figure 1 is a vertical cross-sectional view of a water bottle, Figure 2 is a vertical cross-sectional view of the inner container and insulation material in Figure 1, and Figure 3 is a vertical cross-sectional view of the water bottle. Longitudinal cross-sectional view of the pail,
FIG. 4 is a longitudinal sectional view of the heat-sealed inner container and heat insulating material of FIG. 3. 1...Inner container, 2...Insulation material, 3...
...Exterior body.

Claims (1)

[Scope of utility model registration request] 1. An inner container made of a non-foamed resin molded product made of a styrene-maleic anhydride copolymer or a blend of this and other thermoplastic resin, and a styrene-maleic anhydride copolymer or a blend of this and other thermoplastic resin. Heat insulation for a water bottle, etc., characterized in that a heat insulating material made of a foamed resin molded product made of a blended product is heat-sealed together when the heat insulating material is molded, and the inner container and the heat insulating material are encapsulated in an exterior body. container. 2. The styrene-maleic anhydride copolymer constituting the heat insulating material contains 2 to 25% by weight of maleic anhydride and 98 to 7% by weight of styrene.
5% by weight of a heat-insulating container such as a water bottle according to claim 1 of the above-mentioned utility model registration claim. 3. In blended products of styrene-maleic anhydride copolymer and other thermoplastic resins, maleic anhydride is
A heat-insulating container such as a water bottle as claimed in claim 1 of the above-mentioned utility model registration claim, which contains ~25% by weight. 4. Claim 1 of the above-mentioned utility model registration, which is made of a heat insulating material made of a styrene-maleic anhydride copolymer or a blend of this and other thermoplastic resins mixed with glass fibers.
Insulating containers such as water bottles as described in section.