JPH0436302B2 - - Google Patents

Abstract

PURPOSE:To contrive to improve the workability by a structure wherein bent parts with channel-section are formed at both opposite side end parts of a surface sheet so as to be filled with heat insulating material for side end part and a main sheet heat insulating material is laid on the underside of the surface sheet so as to be thermally bonded under pressure in the manufacture of floor heating panel or the like. CONSTITUTION:Bent parts 11a and 11a having channel-section with the depth of channel H are formed at the right and left side ends of a surface sheet 11 so as to be filled with expanded polystyrene heat insulating material for side end part 13. Further, a main expanded polystyrene sheet heat insulating material 12, the thickness of which is slightly larger than the depth of channel of the bent part 11a, is laid on the underside of the surface sheet 11. At that time, a piping groove 15 is provided on the main heat insulating material 12 and a heat exchanger pipe 14 is laid in the groove 15. After that, the surface sheet 11 and the heat insulating material 12 and 13 are made into an integral body by the thermal bonding under pressure. Due to the structure as mentioned above, setting can be possible without using any jig and easy taking-out is realized, resulting in improving the workability.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention provides heat insulation for insulation panels, such as floor heating panels, ceiling heating panels, wall panels for large refrigerators, etc., and if necessary, for heat exchange inside. The present invention relates to a method of manufacturing a panel equipped with a heat exchanger by embedding medium circulation pipes, heat pipes, etc.

(Prior Art) This type of heat insulating panel generally has a front plate 2 and a back plate 3 made of metal plates etc. integrally bonded to both sides of a heat insulating material 1 made of foamed synthetic resin etc. as shown in FIG. In addition, in the case of a floor heating panel with a heat exchanger, at least one of the front and back double-sided panels 2 and 3 is used as a heat dissipation plate, and a heat insulating material 1 is placed in contact with this. A heat exchange pipe 4, such as a hot water pipe or a heat pipe, is embedded and fixed therein.

By the way, in manufacturing the heat insulating panel as described above, when bonding the front and back plates 2 and 3 to the heat insulating material 1 using an adhesive, the application work is troublesome and productivity is low. So recently,
Using heat-adhesive expanded polystyrene (styrene maleic anhydride copolymer resin) as the heat insulating material 1, the front and back face plates 2 and 3 are stacked on both sides, and then heat-pressing is applied to the surface of the heat insulating material 1. The face plates 2 and 3 are directly fused and integrated with the heat insulating material 1 by utilizing the adhesive force based on the melting of the heat insulating material 1. However, when such an adhesive processing method is used, the melted polystyrene foam on the surface of the heat insulating material 1 acts as a lubricant during the heat-pressing process, making the face plates 2 and 3 extremely slippery. Moreover, it was easy to adhere the adhesive out of position, making it difficult to produce a product with high dimensional accuracy. For this purpose, in the past, as shown in FIG. 3, a bent part 2a having an L-shaped cross section is formed on the periphery of the surface plate 2 to prevent the position from shifting, and a jig 5 is further arranged in a surrounding shape. However, the front and back double-sided plates 2, 3 and the heat insulating material 1 are set on the inside thereof, and a heat-pressing operation is performed.

(Problems with the prior art) However, in order to make it possible to take out the panel after heat-pressure bonding, the jig 5 described above needs to be able to be disassembled and reassembled, and disassembling and reassembling it is time-consuming. In addition, the work of setting each panel component inside the jig is extremely troublesome and requires a lot of time and effort, resulting in poor productivity. There have been various problems such as adhesion to the molded panel and difficulty in removing the molded panel.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention forms channel-like, cross-sectional, bent portions on both side edges of the surface plate, and also includes a heat insulating material. By making it a separate system and incorporating it into each of the inside of the bent part and the lower surface side of the surface plate, it is possible to set the panel constituent members without using a jig,
This made it possible to prevent relative movement during thermopressure bonding, and succeeded in obtaining a heat insulating panel with excellent dimensional accuracy.

That is, in the method for manufacturing a heat insulating panel according to the present invention, cross-sectional shaped bent portions are formed in opposite directions at least on opposite side edges of a face plate, and side portions made of expanded polystyrene are formed in each of the bent portions. While loading the insulation material, a plate main insulation material made of expanded polystyrene with a thickness slightly larger than the height of the bent portion is laid on the lower surface side of the surface plate between the side insulation materials, and then By performing a heat-pressing operation, the side heat insulating material and the plate-shaped main heat insulating material are each fused and bonded to the inner surface of the surface plate using their adhesive properties, so as to correspond to the height of the bent portion. It is characterized by obtaining a panel with a thickness of

(Example) Hereinafter, the manufacturing method according to the present invention will be further explained based on the example shown in FIGS. 1 and 2.

This illustrated example shows a method of manufacturing a heat-insulating panel with a heat exchanger used as a floor heating panel, which does not have a back plate. 12 and 13 are a plate-shaped main insulation material and a rod-shaped side insulation material, both of which are made of expanded polystyrene. 14 is a heat exchange tube.

The surface plate 11 has bent portions 11a, 11a formed in a cross-sectional shape with a height H corresponding to the thickness of the product panel, at least on the left and right opposing edges.

Further, the plate-shaped main insulating material 12 has the bent portion 11a
It is formed to a thickness t that is slightly thicker than the height H of the surface plate 11 and slightly protrudes from the lower surface of the double-folded portion 11a when stacked on the lower surface of the surface plate 11,
Further, on the upper surface, a piping groove 15 having a corresponding shape into which the heat exchange tube 14 fits is formed in advance. On the other hand, the side heat insulating materials 13, 13 are formed into rod shapes separately from the main heat insulating material 12, and are formed in the bent portion 11a of the surface plate 11.
The cross-sectional shape is such that it can be loaded by being inserted loosely or tightly into the container.

When manufacturing a heat insulating panel using each of the above members, as shown in FIG.
Side insulation material 13, inside both bent parts 11a, 11a,
13 is inserted and loaded, while the piping groove 15 on the top surface
The main heat insulating material 12 with the heat exchange tubes 14 fitted thereon is superimposed on the lower surface side of the surface plate 11 between the both side heat insulating materials 13, 13, and these are placed on the press base plate 16 whose surface has been subjected to mold release treatment. Place it on. Then, heat and pressure are applied mainly from the upper surface side using a hot press P. Then, due to the heat applied through the surface plate 11, the surface portions of both the heat insulating materials 12 and 13 are partially melted, and this serves as an adhesive and is bonded and integrated with the surface plate 11.
At least a portion of the contacting portions of both the heat insulating materials 12 and 13 are melted and fused together. The main heat insulating material 12 has a height H of the bent portion 11a of the surface plate 11.
The lower surface is reduced to a thickness corresponding to the bent portion 11a.
The side insulation material 13 is flush with the lower surface of the
Even if it is loosely inserted into the bent part 11a, it will become tightly filled in the bent part 11a and be completely fixed due to its own secondary foaming due to heating. . Moreover, the heat exchange tube 14 is
Together with the secondary foaming of the main heat insulating material 12, it is tightly fixed to the lower surface of the surface plate 11.

Note that, as shown by the chain line in FIG.
This can be similarly applied to the case where a heat insulating panel with a back plate 17 is manufactured by stacking and hot pressing. In this case, the back plate 17 can be used without any problem even if it is slightly smaller than the panel size, so even if it is adhered to a position slightly shifted from the predetermined position, the problem of protruding outside can be avoided. Therefore, it is possible to eliminate the need to take measures to prevent movement.

Moreover, it goes without saying that the surface plate 11 may have the bent portion 11a formed on the entire periphery thereof.

(Effects of the Invention) As described above, the present invention forms cross-sectional shaped bent portions at least on opposite side edges of the surface plate, and in each of the bent portions, side heat insulating material made of expanded polystyrene is provided. At the same time, a plate-shaped main insulation material made of expanded polystyrene with a thickness slightly larger than the height of the bent portion is placed on the lower surface side of the surface plate between the side insulation materials, and then heated. By applying pressure, the side heat insulating material and the plate-shaped main heat insulating material are fused and bonded to the inner surface of the surface plate using their adhesive properties. The face plate itself holds the heat insulating material and can reliably prevent their relative movement. Therefore, unlike the prior art described above, there is no need to place a jig around it to prevent movement, and the process from setting the panel components to removing the panel through heat-pressing operation is greatly simplified. This can significantly improve the production efficiency of heat-insulating panels. In addition, since the bent portion of the surface plate plays the role of regulating the panel thickness during hot pressing and there is no risk of the insulation material protruding from the panel periphery, it is possible to obtain a heat insulation panel with high dimensional accuracy. Even though the surface plate has the above-mentioned bent portion, the inside thereof is also densely filled with side insulation material, so that a panel with excellent insulation properties is obtained throughout the entire surface without any missing portions of insulation material. be able to.

[Brief explanation of drawings]

Fig. 1 and Fig. 2 show an embodiment of the present invention, Fig. 1 is a perspective view showing the panel components in a separated state, and Fig. 2 is a sectional view showing the state during heat pressure operation. be. Further, FIG. 3 is a cross-sectional view showing a conventional method for manufacturing a heat-insulating panel during a heat-pressing operation. 11... Surface plate, 11a... Bent part, 12...
Main insulation material, 13... Side insulation material.

Claims (1)

[Claims] 1 Form cross-sectional shaped bent portions facing each other at least on both opposite side edges of the surface plate, and fill side insulating materials made of expanded polystyrene into both of these bent portions, while filling the side insulating materials between the side insulating materials. A plate main insulation material made of foamed polystyrene with a thickness slightly larger than the height of the bent portion is placed on the lower surface of the surface plate, and then heat-pressing is applied to form the side insulation material and The heat insulation is characterized in that plate-shaped main insulation materials are fused and integrated with the inner surface of the surface plate by utilizing their adhesive properties to obtain a panel having a thickness corresponding to the height of the bent portion. Method of manufacturing sex panels.