JPS6283130A - Preparation of heat-exchange panel - Google Patents

Abstract

PURPOSE:To shorten the time required in a process and to enhance quality by providing a process for laminating a surface sheet to heat the same, a process for performing pressing and cooling so as to obtain a uniform thickness and a process for performing pressing under heating until a constant thickness is obtained. CONSTITUTION:A thermoplastic resin paste is adhered to the insides contacted with a fabric 4 of surface sheets 5A, 5B by coating apparatuses 9A, 9B and the coated sheets 5A, 5B are laminated to the fabric 4 and sent to a heating apparatus 10. The paste is gelled in the heating apparatus 10 and the formed laminate is sent to a cooling press apparatus 11 in this state. When the gelled paste is pressed to the fabric 4 having a double structure by said cooling press apparatus 11, close adhesiveness becomes better and bonding is strengthened and, because uniform molding is performed so that a finish panel thickness coincides with the thickness set by a spacer 14, the generation of inferior in a sealing process can be reduced to a large extent and there is not surface unevenness and the enhancement of quality is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a method for manufacturing a heat exchange panel used for heating or cooling a floor surface, for example, by passing a heat medium made of a fluid such as hot water or cold water therein.

(Background Art) Fig. 6 shows the structure of this type of heat exchange panel 1, in which a corrugated filament 2 of polyester resin or the like and a straight filament 3 of polyester resin or the like are crossed. The fabric is woven to form a double-structure woven fabric 4, and surface sheets 5A and 5B made of watertight thermoplastic resin such as PVC resin are fused to both sides of the woven fabric 4. A heating medium made of a fluid such as hot water or cold water is passed through the heat exchange panel 1 to perform heating or cooling.

By the way, in manufacturing this type of heat exchange panel, there are two steps: a lamination process in which a woven fabric and a surface sheet are laminated and bonded together, and a sealant in which a sealant is attached to the periphery of the laminated and bonded heat exchange panel. Conventionally, the laminating process requires PvC on both sides of the woven fabric, and on the inside.
A top sheet with a sol-like paste made of a thermoplastic resin such as a resin attached is laminated and heated from the outside to gel the paste and fuse it with the ends of the woven fabric.
By cooling, the paste solidified and gained adhesive strength. Furthermore, the sealing material process has been carried out by attaching a sealing material made of a thermoplastic resin such as PvC resin to the periphery of a heat exchange panel that has undergone a lamination process, and then applying heat and pressure using a tomato press.

However, in the conventional lamination process, the fusion of the gelled paste and the woven fabric was a natural bond caused by softening due to heat, which resulted in shallow bonding and also had the disadvantage that the finished panel thickness was not uniform. . Furthermore, since cooling was performed by natural convection, there was a drawback that it took time for the paste to solidify.

On the other hand, the sealing material is used in the process because the thickness of the heat exchange panels sent through the lamination process is uneven.
When pressurizing and heating the sealing material against the top sheet using a heat press, there are cases where the heat press comes into direct contact with the top sheet other than the periphery, and as that area is pressurized and heated, the top sheet may be heated locally. This had the disadvantage that it caused defects such as the filaments of the internal woven fabric popping out.

(Objective of the Invention) The present invention has been proposed in view of the above points, and its purpose is to provide a method for manufacturing a heat exchange panel that can shorten the time required for the process and improve quality. be.

(Disclosure of invention) Hereinafter, the present invention will be described in detail with reference to the drawings showing examples.

FIG. 1 shows an example embodying the method of manufacturing a heat exchange panel of the present invention, mainly showing the lamination process. In the figure, 7 is a supply device for the woven fabric 4, 8A,
8B is a supply device for the topsheets 5A and 5B, respectively, 5 people for the topsheet, 5B is a coating device for 9 people,
After a thermoplastic resin paste is applied to the inner side in contact with the woven fabric 4 by 9B, it is laminated with the woven fabric 4 and sent to the heating device 10. In this heating device 10, the paste is gelled by heating, and in that state is sent to a cooling press device 11.

FIG. 2 shows an example of the configuration of the cooling press device 11, and is shown in the AA cross section in FIG. 1. That is, the cooled upper and lower presses 13A, 13B are relatively moved toward and away from each other, and both presses 13A, 1
3B approaches the position where it comes into contact with the spacer 14 provided on the lower press 13B, and pressurizes and cools the heat exchange panel 1 that has undergone the heating process.

As a result, the gelled paste is pressed against the double-structured woven fabric 4, resulting in better adhesion and stronger bonding.
Since direct cooling is performed through 5B, solidification is faster9
, the time required for the process will be shortened. In addition, since the finished panel thickness is uniformly formed to the thickness set by the spacer 14, the occurrence of defects in the sealing material described later can be greatly reduced in the process, and the quality of the sealing material can be improved without surface irregularities. .

Returning to FIG. 1 again, the heat exchange panel 1 that has completed the lamination process through the cooling press device 11 is cut into appropriate dimensions by the cutter 12, and then a sealing material made of thermoplastic resin is attached to the panel periphery. The sealing material will be sent to the process.

FIG. 3 shows an example of the configuration of the heating press device 15 in the sealing material process.
It is designed to be pressurized and heated at B. In addition, both presses 1
A spacer 17 is provided between the 6 people and 16B,
This spacer 17 is selected to be thicker than the finished panel thickness in the lamination process (corresponding to the thickness of the spacer 14 in FIG. 2), and smaller than the sum of the panel thickness and the thickness of the sealing material 6.

Since the heat exchange panel 1 has been formed to have a uniform thickness in the previous lamination process, the presses 16A, 1
6B comes into contact only with the peripheral sealing material 6 and does not touch the topsheets 5A and 5B, which causes defects such as the topsheets 5A and 5B melting locally and the filaments of the internal woven fabric 4 popping out. It will no longer occur. .

Next, FIG. 4 shows an example of the shape of the sealing material 6, and is shown in a sectional view taken at right angles to the length direction. Therefore, the opening side end a is thinner (formed) than the other parts.
In addition, by opening outward, it is possible to temporarily fix the sealing material by spot welding, etc., as shown by C in Figure 5, when installing the sealing material. In the press device (15), the sealing material 6
This has the advantage of preventing it from coming off or shifting.

(Effects of the Invention) As described above, in the present invention, in the manufacturing method of a thin heat exchange panel that allows heat exchange by passing a fluid inside, the woven fabric is formed by crossing filaments to form a double structure. A process of laminating and heating a surface sheet made of a water-like thermoplastic resin on both outer sides of the panel, followed by a process of pressurizing and cooling it to a uniform thickness after this process, and a process of applying heat to the periphery of the panel. This method includes a step of attaching a sealing material made of plastic resin and applying pressure and heat to a certain thickness that is thicker than the panel thickness, so that (a) the woven fabric and top sheet are bonded well in the lamination process. Become.

(b) The time for solidifying the paste in the lamination process is shortened.

(c) The sealing material can prevent defects from occurring during the process.

There are other effects.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of a device embodying the method for manufacturing a heat exchange panel of the present invention, Fig. 2 is a configuration diagram of a cooling press device, Fig. 3 is a configuration diagram of a heating press device, and Fig. 4 is a configuration diagram of a sealing material. FIG. 5 is an explanatory view showing a state in which the sealing material is temporarily fixed, and FIG. 6 is a diagram of the internal structure of the heat exchange panel. 1... Heat exchange panel, 2, 3... Filament, 4... Woven fabric, 5A, 5B...
・Surface sheet, 6... Seal material, 7, 8 people,
8B... Supply device, 9A, 9B...
・Coating device, 1o... Heating device, 11
......Cooling press device, 12...Cutter, 13A, 13B...Press, 14...
・・Spacer, 15・old・heat press equipment! , 18A,
18B... Press, 17... Spacer Figure 1 Figure N2

Claims (2)

[Claims] (1) In the manufacturing method of a thin heat exchange panel that allows heat exchange by passing fluid through the inside, the outer surfaces of a woven fabric made of crossed filaments to form a double structure are made of watertight thermoplastic resin. A method for manufacturing a heat exchange panel, comprising the steps of laminating and heating a top sheet, and after this step, cooling under pressure to obtain a uniform thickness. (2) In the manufacturing method of a thin heat exchange panel that allows heat exchange by passing a fluid through the inside, the outside surfaces of a woven fabric made of a double-layered structure of crossed filaments are made of watertight thermoplastic resin. There is a process of laminating and heating the top sheet, a process of pressurizing and cooling after this process so that it has a uniform thickness, and a sealing material made of thermoplastic resin is attached to the periphery of the panel after this process to make the panel thicker. A method for producing a heat exchange panel, comprising the step of pressurizing and heating the panel to a certain thickness.