JPS5878752A - Method of reinforcing veneer - 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] The present invention relates to the production of decorative veneers.

Conventionally, veneer for plywood base material was simply cut from raw wood with a slicer. Therefore, the present inventors further placed a decorative material containing a thermosetting/curable resin on the surface of the veneer cut with a rotary lace and bonded the two together under heat. By expressing natural wood grain more clearly on the surface, we have devised a method for manufacturing decorative veneers with excellent aesthetic effects.

That is, the method for producing a decorative veneer of the present invention uses melamine,
A decorative paper coated or impregnated with various thermosetting resins such as diallyl phthalate, polyester, and phenolic resin (hereinafter referred to as decorative material containing thermosetting resin) is cut with a rotary lace and hydrated with a dryer. rate is 8
It is placed on one or both sides of a veneer that has been dried to ~20%, and a smooth polypropylene film or the like having #il type properties is brought into contact with these placement surfaces, and the combined load is heated to a temperature of 180~20%. By heat-pressing the product under conditions of 150°C and a pressure of 8 to 16,147 m, it achieves a beauty not seen in conventional lauan veneers for base materials! iiK. By imparting an excellent decorative surface to the fruit, a decorative veneer is produced that more clearly expresses the natural wood grain on the surface of the veneer.

Among the veneers for base materials, those with a thickness of about 0.5 to 1.51 mm have excellent curved surface processing performance. on the other hand.

Thick veneers of about 2.5 to 6.01 can be used for furniture, fixtures, etc. by using paper with threads such as Tetoron in a net shape on the back side as packer paper, just like decorative plywood made from normal plywood. It becomes possible to use it for. In this case, compared to decorative plywood as a plywood base material, it is possible to shorten the overall manufacturing process and reduce manufacturing costs, thereby making it possible to supply the product to the market at a lower cost.

Adding a decorative material to the surface of the veneer not only reinforces the strength of the veneer, but also causes the surface to become convexly warped, making work such as gluing when using a decorative veneer product easier.

According to the method for manufacturing decorative veneers of the present invention, the time required for heat and pressure bonding per 1% of the thickness of the veneer is approximately 80 seconds, which is an extremely short time, which is particularly useful when manufacturing thin veneers. Since it is flame processed, it is useful from the viewpoint of flame resistance, such as eliminating the disadvantages of conventional vinyl chloride film, such as the generation of toxic gas in the event of a fire.

[Brief explanation of drawings]

Figure 1 shows a decorative material containing a thermosetting resin on the front surface of a veneer, and a buffing paper containing a thermosetting resin on the back surface, which was manufactured by thermocompression bonding the two together. FIG. 2 is a plan view of the veneer, FIG. 2 is a vertical cross-sectional view of the decorative veneer, and FIG. 8 shows a method of placing a decorative material containing a thermosetting resin only on the surface of the veneer and bonding them together by thermocompression. FIG. 2 is a longitudinal cross-sectional view of a decorative veneer manufactured by. In the above drawings, a is a decorative material containing a thermosetting resin, b is a veneer, and C is a puff car paper containing a thermosetting resin. Patent applicant name: Ibigawa Electric Industry Co., Ltd. Representative: Kazuo Taga and one other person

Claims (1)

[Claims] l) A decorative material containing a thermosetting resin is placed on the surface of a veneer cut with a rotary lace, and these are bonded under heat to more clearly express the natural wood grain on the surface of the veneer. A method for producing a decorative veneer characterized by: