JPS6271645A - Manufacture of decorative board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for manufacturing decorative laminates used for furniture, building materials, etc.

[Background technology]

The conventional manufacturing method for decorative boards is that when the core material (base board) is a flat board, a wooden A1 slope is adhered to the core material either directly or through paper to prevent cracking, and then the wood is sanded, the wood is colored, and the undercoat is applied. It required steps such as one coat, coloring, sanding, and topcoating.

In addition, if the core material is not a veneer (in the case of a molded base plate),
If left as is, cracks will occur, so many wood veneers are reinforced with paper lining on the back side, and sanding after attaching the core material. ! Because it is difficult to process coatings, etc., the process is often done before the sheet is pasted with the core material, but in both cases the painting process is complicated.

[Object of the Invention] The object of the invention is to provide a method for manufacturing a decorative board that can easily perform reinforcement, painting, etc. of the wooden veneer that is adhered to the core material, and that can reduce the number of steps. It is.

[Disclosure of the invention]

The method for producing a decorative board of the present invention is characterized by adhering a transparent or semi-transparent film to the surface of a wooden veneer before or after adhering to the core material, then sanding the surface, and then applying a top coat. That is.

As described above, according to the present invention, by adhering the film to the wood veneer, the labor of painting and sanding can be significantly reduced, and the film also strengthens the wood veneer and prevents the occurrence of cracks. be able to.

The method of this invention will be explained based on FIG.

That is, the method for manufacturing this decorative board involves applying an adhesive 2 to one side of a transparent or translucent film l, bonding a wooden veneer 5 to this one side using a press 4 to form a composite sheet, and then producing a composite sheet. Apply the adhesive 7 to the back side of the core material 8.
Lay them on the surface and adhere them using a vacuum press 9. After adhesion, the surface of the film 1 is sanded with sandpaper 10 to make the surface smooth, and then a top coat is applied using a coater 1).

Here, the material and dimensions of the film l used are not particularly limited, but it is preferable that the thickness is about 80 to 150μ, and if the thickness is larger than that, it will lose its flexibility and will be difficult to bend. If it is smaller than that, compounding or sanding becomes difficult. Examples of the material for the film 1 include polyvinyl chloride, ethylene terephthalate, polymethyl methacrylate, polyethylene, etc., but from the viewpoint of adhesion with the wood veneer 5, sanding property, and adhesion with the top coat, Polyvinyl chloride, polymethyl methacrylate, etc. are suitable. In this case, if the film 1 is too soft, it will not be possible to sand it, so the appropriate amount of plasticizer to be added is about 0 to 10 PHR.

Further, the adhesive 2 used for adhering the film 1 is preferably transparent, and examples include vinyl acetate-based, polyurethane-based, nylon-based, and vinyl chloride-based adhesives. adhesive 2
may be applied to one or both of the wood veneer 5 and the film 1, and adhered at room temperature or under heat and pressure.

The order of compositing the film 1 and adhering it to the core material 8 is not limited; in the case of a flat core material, the wood veneer may be attached to the core material first, and then the film can be composited. As shown, in the case of pasting onto a molded base plate, the composite sheet 6 is adhered to the core material 8 using a vacuum press 9, a wrapping machine, or the like.

The sanding is necessary because the surface of the film is not smooth due to unevenness caused by the core material, wood veneer, and adhesive. At this time, if the particles of sandpaper 10 are coarse,
The scratches are deep and fluffy, making it difficult to paint. Furthermore, if the polishing speed is high, the film 1 will more easily melt due to frictional heat. Therefore, when sanding, usually #32
It is preferable to use sandpaper with a size of 0 to #400 at a paper speed of about 400 m/min or less and a feed rate of about 20 to 30 m/min. The amount of sanding depends on the core material, adhesive, etc. It is appropriate to set the thickness to about 20 to 40 μ so that the surface is not exposed. however,
It can be used as long as the wood veneer is partially exposed.

For the top coat after sanding, use a paint that has good adhesion to the film 1.

When a colored film is used as the film 1, a unique coloring effect can be obtained. Furthermore, if the film 1 is embossed to express the conduit portions found in natural hardwood, a decorative board with a more natural and luxurious feel can be obtained.

Example 1: To make a furniture door frame, a polyvinyl chloride adhesive was applied to the surface of an oak veneer (thickness: 0.3 cranes).
0g/g, and then a polyvinyl chloride film (
Plasticizer 5PHR, thickness 120μ) at a pressure of 6kg/rd,
It was pressed at a temperature of 80° C. for 30 seconds to form an adhesive composite. This was attached to an MDF core material using a vinyl adhesive using a vacuum press. The adhesive was applied to both sides at 120 g/Id and pressed at 80° C. for 40 seconds. Next, apply #320 sandpaper at a wind speed of 4QQm/min and a veneer feed rate of 20
Sanding was carried out at 20-30 μm/min. Thereafter, a top coat of 30 g/d of urethane paint for polyvinyl chloride was applied to obtain a door frame with a smooth surface.

Example 2 A door frame similar to the example was obtained.A conduit portion was expressed on the surface of this door frame.

〔Effect of the invention〕

According to the method for producing a decorative board of the present invention, by adhering a film to the wood veneer, the labor of painting and sanding can be significantly reduced, and the film reinforces the wood veneer to prevent cracking. It can be prevented.

[Brief explanation of drawings]

FIG. 1 is a process explanatory diagram showing the method of this invention. l...Film, 2...Adhesive, 5...Wood veneer, 8...Heartwood, 10...Sandpaper 1) p4 1 1st Wood I! Leather version X Sky 7/Sith figure

Claims (3)

[Claims] (1) A method for producing a decorative board, which is characterized by adhering a transparent or translucent film to the surface of a wood veneer before or after adhering to the core material, then sanding the surface, and then applying a topcoat. . (2) The method for manufacturing a decorative board according to claim (1), wherein the film is a colored film. (3) The method for manufacturing a decorative board according to claim (1), wherein the film is a film in which a conduit portion is expressed by embossing.