JPH0139550Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat insulating laminate which has an excellent heat retention effect and is particularly suitable for use in keeping machinery and buildings warm and cold.

Conventional insulation materials such as synthetic resin foam sheets and asbestos boards are widely used, but in order to improve their heat retention and cold retention effects, it is necessary to increase the thickness of the insulation material. There were problems in that not only did the layers become unnecessarily large, but their workability and applicability were hindered.

Therefore, the present inventors conducted studies with the aim of further improving the heat-retaining and cold-retaining effects of conventional heat insulating materials, and found that by providing a heat retaining layer made of a synthetic resin tortoise-shell mesh as an intermediate layer of the heat insulating material, the above-mentioned We have found that the purpose can be achieved effectively.

In other words, the present invention uses a synthetic resin tortoiseshell-shaped network body.
To provide a heat insulating laminate, which is folded around the twisted edges and stacked in two or more layers so that the meshes substantially match, and plate-shaped heat insulating materials are laminated and fixed on both sides.

The synthetic resin tortoiseshell-shaped net-like body (hereinafter simply referred to as the net-like body) used in the present invention is composed of two twisted sides (A) and four straight sides (B), as shown in the plan view in Figure 1. The tortoise shell-shaped mesh that is formed is regularly continuous, and this can be woven by subjecting a synthetic resin monofilament to a known knitting and weaving machine. This net-like body can be easily bent in the B-B' direction with the twisted sides of each mesh, that is, the A-A' direction in FIG. This results in a two-layer laminated structure in which the two layers substantially match each other. Similarly, if the net-like body is further folded and overlapped, a three-layer laminated structure will be obtained.

In the present invention, as shown in FIG. 2, a laminated net 1 made by bending the net as described above and stacking two or more layers, particularly three or more layers so that the meshes substantially match, is used as a heat insulating layer 1'. , this is plate-shaped heat insulating material 2,
By stacking in a sandwich pattern with 2',
A heat insulating laminate 3 is thus formed. In this configuration, a laminated net 1 is provided between the plate-shaped heat insulating materials 2 and 2'.
A honeycomb-like air layer 4 is formed by the mesh, which not only further enhances the heat insulation and cold insulation effects, but also reduces the amount of expensive plate-shaped insulation material used and reduces the overall thickness. . Therefore, it is preferable to increase the volume of the air layer by increasing the size of the mesh as much as possible.

Examples of the synthetic resin material for the network used in this invention include those that can be melt-spun, stretched, and woven, such as polyolefin, polyamide, polyester, polyvinyl chloride, polyvinylidene chloride, and polyvinylidene fluoride. However, the higher the melting point and ignition point, the wider the temperature range in which the heat insulating laminate of the present invention can be used.

In addition, the performance of the monofilament that forms the network is that it must be hard and flexible enough to be bent, and the wire diameter can be bent into two or more layers to meet the purpose of the laminated network. Any range that can form a sufficient air layer can be selected.

However, the net-like body is made of polyester with a wire diameter of 1.5 mm or more, which has a high melting point and can easily produce monofilament with a thick wire diameter.
In particular, a material composed of a monofilament of 2.0 mm or more can be particularly preferably applied.

Examples of plate-shaped heat insulating materials used in this invention include asbestos boards, synthetic resin foams, synthetic resin felts, synthetic resin hollow molded products, glass fiber boards, calcium silicate boards, and perlite boards. The thickness can be arbitrarily selected depending on the use of the heat insulating laminate and the degree of heat retention or cold retention.

Furthermore, as shown in Fig. 3, the laminated mesh body 1 and the plate-shaped heat insulating material 2 can be alternately laminated in many layers to further enhance the heat insulation effect, and the required performance can be further increased. Therefore, the structure can be changed and devised in various ways.

In the heat insulation laminate of the present invention, the laminate network 1
The fixation between the heat insulating material 2 and the plate-shaped heat insulating material 2 can be easily achieved using an ordinary adhesive, but it can also be achieved by fusion using a high-frequency heating method or the like, taking advantage of the fusion properties of the net-like body.

According to the heat insulating laminate of the present invention, compared to conventional heat insulating materials, heat retention and cold retention can be improved by about 10% with the same thickness. For example, Japan Asbestos Co., Ltd.
Made of hard asbestos board (Tombow stamp, No.6515...thickness 15mm)
In a dryer with internal dimensions of 600mm x 600mm x 500mm, when the internal temperature is maintained at 100℃,
The outside air temperature was 13°C and the machine outer wall temperature was 37°C. Instead of the asbestos plates mentioned above, a mesh with a mesh size of 50 mm was used, which was woven from polyester monofilament with a wire diameter of 2.7 mm between two hard asbestos plates with a thickness of 5 mm. When using a laminate in which two layers of bodies were laminated and fixed together, the temperature of the outer wall of the machine was 31°C.

As explained above, the thermal insulation laminate of the present invention has excellent heat and cold insulation effects, and also has excellent strength because the net-like body forms a framework, so the insulation effect can be enhanced without increasing the thickness. Workability and applicability are also good. Therefore, the heat insulating laminate of the present invention can be expected to have a wide range of applications, such as in mechanical equipment such as dryers and refrigerators, as external linings for various types of piping, and as wall materials for buildings such as houses and buildings.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a synthetic resin tortoiseshell-shaped mesh body, Fig. 2 is a partially cutaway perspective view of the heat insulating laminate of the present invention, and Fig. 3 is another embodiment of the heat insulating laminate of the present invention. FIG. B... Linear side, C... Mesh, 1... Laminated network, 2... Platy heat insulating material, 3...
...Insulating laminate, 4...Air layer.

Claims (1)

[Scope of utility model registration request] A heat insulating laminate made by laminating and fixing plate-shaped heat insulating material on both sides of two or more layers of synthetic resin tortoise shell-shaped nets that are bent around the twisted sides and stacked in two or more layers so that the meshes almost match. body.