JPH0573569B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a method for manufacturing a heat-resistant member with excellent heat resistance.

<Prior Art> Although fire resistance is not required for the tops of tables and desks, materials that discolor or deform at a temperature comparable to that of a lit cigarette are undesirable.

However, when the surface layer is finished with an organic material such as a general synthetic resin or wood, there is no material other than melamine resin that has sufficient heat resistance.

However, in the case of melamine resin, there are problems with colorability and economical efficiency, so there is a strong demand in the market for using a wider range of general synthetic resins to improve heat resistance.

In general, with desks made of painted steel plates, heat is transmitted through the steel plate and diffuses quickly, making it difficult for local temperature increases to occur, so the paint film usually does not change color or deform when lit by a cigarette. It is.

Based on this principle, structures obtained by adhering or adhering thin metal sheets with high heat dissipation effects such as aluminum foil or galvanized steel sheets to materials such as resin or wood, or structures made of synthetic resin that are integrally molded with these thin metal sheets. It is obvious that similar effects can be expected by post-coating on the thin metal plate of the structure, and there are many examples of this.

Similarly, after a thin metal plate with a large heat dissipation effect is once adhered or adhered to the resin film forming the surface, a curable resin stock solution having adhesive properties is introduced to the thin metal plate, and it is integrated with the main body of the structure. It is also easy to think of ways to form it.

However, it has been found that the following drawbacks exist when working with this method.

<B> When adhering or adhering a thin metal plate over a wide area onto a resin film surface, no matter how carefully the work is done, it is inevitable that a small amount of air will remain between the two.

<B> The remaining air is removed from the surface of the product (resin film).
It will remain as a bubble just below.

When such a board is used, for example, as a desk top, when writing on it, the feel is very different between the contact area and the hollow area, making the user feel uncomfortable and reducing the product value.

<C> Thin metal plates such as aluminum foil need to be handled carefully and are easily torn or wrinkled.

As a result, work efficiency is greatly reduced.

<D> Aside from horizontal surfaces, it is extremely difficult to glue or adhere curved parts around the edges of members in an accurate shape to match the designed curved surface, even with foil.

<Object of the present invention> The present invention has been made in view of the above points, and its object is to provide a heat-resistant member that avoids the presence of air and provides a heat-resistant member with high commercial value. Our goal is to provide manufacturing technology.

〈Means for solving problems〉 Next, an example will be described.

(1) Structure The heat-resistant member of the present invention is composed of a resin film 1 on the surface, a metallic porous material 2 on the inner surface (hereinafter simply referred to as the "porous material"), and a main body member 3 responsible for structural strength. Ru.

<A> Resin film The following materials can be used as the resin film 1.

Any coating material or paint that is capable of in-mold coating and that is used for the purpose of beautifying and protecting the body and that meets this purpose can be used.

Among these, polyurethane coating agents and unsaturated polyester gel coats are optimally used for this purpose.

Further, as long as the same purpose can be achieved, films and sheets made of resins such as polyvinyl chloride, polyacrylic, and polyester can also be used directly or after being shaped as necessary.

In order to improve the heat dissipation effect, these resin films contain inorganic powder as a filler, which is more effective for the purpose of the present invention.

<B> Porous material The porous material 2 provided inside the resin film 1 is
It is a member for dispersing the heat added to the resin film 1 and releasing the air that is present when it is laminated with the resin film 1. For example, it is made of a wire mesh, a metal plate with punched holes, etc., and has many holes. A wide variety of materials can be used.

Copper and aluminum materials are suitable as the material for the perforated material 2, but other known metals with high thermal conductivity may also be used.

<C> Main body member The main body member 3 responsible for the structural strength of the member can be made of known resins including foamable resins and reinforced resins, or wood, particle board, and other known materials, either singly or in combination.

However, the main body member 3 must have a completely integrated structure with the perforated material 2 and the resin film 1, and if the main body member 3 does not have adhesive properties as shown in FIG. It is necessary to provide the agent layer 4.

Therefore, whether or not the main body member 3 itself has adhesive properties, an adhesive layer containing the porous material 2 is formed between the main body member 3 and the resin film 1. .

Here, the resin stock solution for forming the main body member 3 is preferably a hard resin stock solution having foaming properties, and among them, a hard polyurethane foaming stock solution is most suitable.

Next, the manufacturing method will be explained.

<B> Formation of resin film In order to facilitate mold release, the above-mentioned stock solution for forming resin film 1 is applied by spraying, brushing, etc. onto the inner surface of mold 5, which has been coated with a mold release agent if necessary. Apply.

Alternatively, the above film or sheet may be brought into close contact with the inner surface of the mold by, for example, vacuum forming.

In any case, the thickness of the resin film is, for example, 0.05 mm to 1
Approximately mm is desirable.

Below that value, the strength becomes unstable in terms of wear resistance, and above that value, it becomes difficult to quickly release and diffuse the heat that comes into contact with the surface into the porous material.

<B> Setting of the porous material (FIG. 4) Before or after the resin film 1 is cured, the porous material 2 is placed on it.

Adhesion between the two can be expected before the resin film 1 is completely cured, but uncured is not an essential condition.

During the stacking process of the perforated material 2, if air is present between the non-perforated plate surface of the perforated material 2 and the resin film 1, this air will be released through the openings of the perforated material 2. No air remains between the resin film 1 and the resin film 1.

<C> Formation of the main body member (FIG. 5) To form the main body member 3 on the perforated material 2, for example, a foamable resin stock solution 6 is poured.

In this way, if the main body part 3 is made of polyurethane foam resin or the like which has adhesive properties itself during molding, there is no need to use a separate adhesive.

In this case, pre-molded resin materials, wood, particle board, metal, etc. are used as necessary for reinforcement, cost reduction, and parts attachment.
Needless to say, it can also be used as an insert.

Furthermore, reinforcement or improving molding workability,
Depending on the purpose, mat or cloth made of inorganic fibers such as glass fibers and carbon fibers, which are generally called reinforcing materials, and organic fibers such as polyester fibers and polyamide-imide fibers, may also be used.

When the main body member 3 is formed of a foamable resin material, it is of course necessary to close the mold 5 before or after pouring the foamable resin stock solution 6.

Of course, if the mold is to be closed before injection, it goes without saying that a suitable injection port is required.

On the other hand, when the main body member 3 is made of wood or the like as shown in FIG. 2, a layer 4 of a curable resin stock solution having adhesive properties is first formed on the porous material 2.

The main body member 3 is pressed against this layer 4 to integrate it, or a curable resin stock solution having adhesive properties is press-fitted between the porous material 2 and the main body member 3.

If you give it a certain thickness as a layer, you can expect it to reinforce wood, etc.

<D> Demolding After the resin has hardened, demolding completes a member (Fig. 1) in which a resin film 1 is formed on the surface and a porous material with high thermal conductivity is embedded immediately inside.

This member is used, for example, as a top plate of a desk as shown in FIG.

<Effects of the Present Invention> Since the present invention is as described above, the following effects can be expected.

<A> A porous material with good thermal conductivity is buried just inside the resin film on the surface.

Therefore, the heat applied to the resin surface is immediately conducted to the porous material, widely diffused and consumed, and there is almost no adverse effect such as discoloration or deformation on the resin film surface.

<B> Since a porous material is used, no air bubbles remain between the resin film and the structure.

Therefore, inconveniences such as voids remaining inside the product will not occur.

<C> Since the member is a porous material like wire mesh,
Unlike foil, it does not tear or wrinkle during handling during manufacturing.

Therefore, it is extremely easy to handle and requires no special care by the operator, resulting in a marked improvement in work efficiency.

<D> Even when forming a curved surface on the edge of a member, a perforated material such as wire mesh can be easily adapted to the formation, and work efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the heat-resistant resin member of the present invention, FIG.
Figures, sectional views of other embodiments, Figures 3 to 6, explanatory views of the manufacturing method, and Figure 7, explanatory views of the state in which it is used in an actual product. 1... Resin film, 2... Porous material, 3... Main body part.

Claims (1)

[Claims] 1. A resin film is formed in close contact with the inner surface of the formwork, a metal porous material with high heat dissipation properties is placed on the surface, and then a curable resin stock solution with adhesive properties is used to form the resin film. A method for manufacturing a heat-resistant member, which comprises bonding a resin film and a structure body through a through-hole in a porous material, or forming a structure body from the resin stock solution itself.