JPS592612B2 - Fukugokinzokuban Oyobi Sonoseizohou - Google Patents

Description

[Detailed description of the invention] The present invention is lightweight, has excellent processability, and has heat resistance, corrosion resistance,
The present invention relates to a low-cost manufacturing method for a composite metal plate that is excellent in airtightness, weather resistance, durability, and mechanical strength, uses less material (single material), and is highly resource-saving.

In general, metal plates themselves have a very wide range of demand and are used in all kinds of fields, but the characteristics of one type of metal are naturally limited, and there are very few single types of metal that are suitable for a variety of uses. It was boring.

Therefore, conventionally, alloy metal plates that take advantage of the characteristics of various metals or composite metal plates made by laminating dissimilar metal plates have been considered. The composition (material structure, type, etc.) of the adhesive for metal plates and the technical means for laminating them are still insufficient, and the desired composite metal plate cannot be used. In other words, the present invention solves the above-mentioned problems all at once, and provides a method for manufacturing a composite metal plate that has many characteristics and is suitable for a variety of uses. An embodiment shown in the accompanying drawings will be described in detail below.

1 and 2 show examples of the manufacturing method of the composite metal plate of the present invention. The method shown in the first figure is a single type, and the one shown in the second figure is a multiple type.

That is, in the case of Fig. 1, a copper plate 1 or a galvanized iron plate 2 are each wound into a ball shape in advance, and one of them (copper plate 1 in this case) is passed from an unwinding machine 3 to a coating roll 4 and coated with a conventional coating on one side. An adhesive/insulating layer 5 made of synthetic rubber or plastics mainly made of well-known chloroprene rubber, silicone rubber, epoxy resin, polypropylene, etc. is coated to a uniform thickness, and then the adhesive/insulating layer 5 is dried in a drying oven 6. 5 is dried so that the residual solvent in 5 is about 0.5 to 396, and this is again wound into a roll by the winding and unwinding machine 7, and the remaining roll, that is, the galvanized iron plate 2 is also rolled into the copper plate 1.
The galvanized iron plate 2 is coated in the same manner as above and taken out from the drying oven 6, but in this case, the galvanized iron plate 2 is not rolled into a ball like the copper plate 1, but is heated to 100°C to 150°C and then taken out from the laminating roll 8. be led to.

On the other hand, the copper plate 1, which has already become a rolled ball, is unwound again by the winder and unwinder T, and reheated by a heating device (for example, a heater) 9 to 100°C to 150°C in the same way as the galvanized iron plate 2. and guided to the laminating roll 8, both metal plates 1 and 2
The adhesive and insulating layers 5, 5 are bonded together and pressed together to form a composite metal plate consisting of an integrated laminated plate, which is then continuously sent out. Note that 10 is a slitter for cutting off both longitudinal ends of the composite metal plate, and 11 is a cutter for cutting in a direction perpendicular to the longitudinal direction. Next, in the case shown in Fig. 2, the copper plate 1 and galvanized iron plate 2 are transferred to an unwinding machine 3.
3 are passed through separate coating rolls 4, 4, and an adhesive/insulating layer 5 is formed on one side thereof in the same manner as in the case shown in the first figure. It is dried so that the residual solvent in it is about 0.5 to 3%, and then heated to 100 to 150 degrees Celsius and guided to the laminating roll 8, where the two metal plates 1 and 2 are mutually bonded. The adhesive and insulating layers 5, 5 are bonded together and pressed together to form a composite iron plate consisting of an integrated laminated plate, which is then continuously sent out.

The composite metal plate according to the present invention formed as described above has the following features.

One side is made of a copper plate 1, the other side is made of a galvanized iron plate, and furthermore, both metals 1 and 2 are integrated with an adhesive and insulating layer 5 interposed therebetween. It has excellent properties such as strength, durability, mechanical strength, light weight, and workability. It also uses less material (single material) and is highly resource-saving.
Low cost. Therefore, for example, if this is used as a heat receiving tube material for a solar water heater, the copper plate 1 side should be the surface that comes into contact with hot water (water), and the galvanized iron plate 2 side should be the surface that contacts the solar heat rays (rays).
When used as a receiving surface, the copper plate 1 has excellent heat resistance, corrosion resistance, and airtightness, so it can prevent corrosion due to water quality and maintain long-term durability. 1 and the galvanized iron plate 2, thereby preventing electrical corrosion and joining them together.
It prevents corrosion of iron plates, and iron plates have significantly better heat resistance and weather resistance than plastics, etc.
It is not only cheap, but also has a lot of strength, so it has a variety of properties such as being able to maintain its strength, making it extremely suitable for versatile use. be. In addition, when the composite metal plate of the present invention is used as a roofing material, it has exactly the same durability and aesthetic appearance as a conventional copper roof, and the cost is about 1 to 10% lower than that of a copper plate alone.
/3, and the presence of the adhesive and insulating layer 5 provides very high heat insulation and soundproofing effects. It also prevents electrolytic corrosion, so it is corrosion-free and extremely easy to maintain and manage. It also has far superior mechanical strength. Because it is large, there is less damage etc.
Great durability.

Furthermore, the composite metal plate of the present invention can be used in all sectors that require first-class heat resistance, corrosion resistance, airtightness, weather resistance, and durability. As mentioned above, the present invention is capable of manufacturing composite metal plates having various excellent performances, but the most important aspect in manufacturing this type of composite metal plate is The important thing is to adjust the amount of solvent remaining in the adhesive layer.If the amount of solvent is small, it will cause poor adhesion, and if the temperature is high, it will not only cause a decrease in adhesive strength, but also cause the adhesive to fail after bonding. Due to the expansion of the residual solvent contained in the solvent, a peeling phenomenon may occur, resulting in a defective product.Therefore, it is necessary to adjust the amount of the solvent to an appropriate level.However, in the past, this adjustment was not easy. However, in the present invention, the metal plate is continuously transferred as described above, and during this time the bonding and insulating layer is formed and the drying process is performed. The lower and upper limits of the amount of residual solvent contained in the adhesive and insulating layer are regulated to about 0.5 to 3% to prevent adhesion failure due to insufficient amount of residual solvent and residual solvent. The adhesive and insulating layer is heated again to 100°C to 150°C to prevent the adhesive strength from being insufficient due to an excessive amount of the adhesive and the peeling phenomenon caused by the expansion of the solvent. Since the synthetic rubber and plastic materials to be formed are restored to a bondable state, that is, reactivated, and then bonded, not only can the solvent be adjusted extremely easily, but the bonding is reliable. It is possible to obtain a strong bonded product through a series of assembly steps, and since the above product can be manufactured in a short time using simple equipment through a series of assembly operations, it is possible to supply this product at a low cost. It is possible.

It is also possible to add a step of separately applying a surface coating Z' to the surface of the galvanized iron plate in the present invention, or to use a galvanized iron plate that has already been coated on the back side.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are explanatory diagrams showing each example of the manufacturing process of a composite metal plate, and FIG. 3 is a partially enlarged sectional view of the composite metal plate. 1...Copper plate, 2...Zinc iron plate, 2t...Zinc layer, 3
... Unwinding machine, 4... Coating roll, 5... Adhesive/insulating layer, 6... Drying oven, 7... Winding and unwinding machine, 8
... Lamination roll, 12... Guide roll.

Claims (1)

[Claims] 1. While continuously transferring at a predetermined speed, a synthetic rubber or plastic adhesive/insulating layer is formed on one side to a substantially uniform thickness, and the residual solvent in the layer is reduced to about 0.5 to 3%. A long strip-shaped copper plate and a galvanized iron plate, which have been dried as desired, are heated to 100°C to 150°C, and the respective adhesive and insulating layers are bonded together and compressed to form an integrated laminate. A method for manufacturing a composite metal plate, which comprises cutting a composite metal plate into predetermined dimensions.