JPH03182343A - Decorative board manufacturing method - 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 (Field of Industrial Application) The present invention relates to a method for manufacturing a decorative laminate, and more particularly, to a method for manufacturing a decorative laminate with an excellent finish on the end surface.

[Conventional technology]

Conventionally, a molding method called post-forming has been used as a method for manufacturing decorative boards with wood finish finishing.

This method involves bonding a high-pressure melamine decorative sheet to the substrate, and it is possible to form a curved surface along the edge of the substrate.
Excellent surface properties.

Furthermore, there is a method for manufacturing a decorative board in which the end of the board is chamfered and a decorative paper or a decorative PVC sheet is rolled up to the end of the board to decorate the end of the board.

[Problem to be solved by the invention]

However, the post-form molding method described above has the disadvantage of being expensive, and the process of stacking multiple sheets of melamine resin-impregnated paper for 50
After producing a high-pressure melamine decorative sheet by molding at a high pressure of about 1 kg/cil, 2
When molding is performed by heating at a high temperature of 50 to 370'C for about 20 to 120 seconds, the heating conditions must be strictly controlled. Too much heat will cause blisters, while too much heat will cause molding, especially cranks, to occur.

In addition, with the method of chamfering the wood end and applying decorative paper directly to the wood end surface, not only the surface properties such as heat resistance and scratch resistance are not very good, but also the wood end surface of the board is generally rougher than the surface of the board. When decorative paper or the like is pasted on the surface of the decorative paper, the unevenness of the end surface will appear on the surface of the decorative paper and the product value will be significantly reduced.

Therefore, in view of the need for a method for manufacturing a decorative board that has an easy bottom shape and a good decorative end finish, the present inventor has completed the present invention as a result of intensive studies.

[Means to solve the problem]

The present invention is intended to solve the above problems,
To provide a method for manufacturing a decorative board which has an easy bottom shape, an excellent decorative end finish, and high productivity.

Specifically, in the present invention, a resin-impregnated barrier paper and a resin-impregnated decorative paper are sequentially laminated on the surface of a substrate and bonded under heat to form a resin-impregnated paper layer, thereby forming a decorative board with an undecorated edge. After that, at the edge of the decorative board, the end of the substrate is cut into a desired shape while leaving the resin-impregnated paper layer, and then a side core material is attached to the end of the board, and at least a portion of the side core material is cut into a desired shape. The present invention relates to a method for manufacturing a decorative board with end finishing, characterized by forming a end surface composed of the following: and adhering the remaining resin-impregnated paper layer to the end surface.

As the barrier paper, a stack of two or more sheets may be used depending on the case. Furthermore, when flexibility is required for impregnated barrier paper, acrylic resin is preferably used.

Hereinafter, each step of the present invention will be explained in detail with reference to the drawings.

As shown in Fig. 1, which is a cross-sectional view, resin-impregnated barrier paper is prepared by impregnating melamine resin or diallyl phthalate resin with kraft pulp to a syncytial ratio of 40 to 55% on the surface of a substrate (1) such as plywood or particle board. After placing resin-impregnated decorative paper (3) on which sulfide pulp is impregnated with melamine resin or diallyl phthalate resin in an amount of 50 to 70%, preferably 55 to 65%, on top of (2), Depending on the type, a resin-impregnated paper layer (4), which is a decorative layer, is formed by thermocompression bonding under the following conditions.

Melamine resin 20~30 160~180 30~
40 diallyl phthalate resin 12-15
160-180 30-40 In addition to the resins mentioned above, resins commonly used for decorative layers of decorative boards can be used.

In the examples shown in FIGS. 1 to 4, both sides of the substrate are decorated, but the present invention is also applicable to the production of decorative boards with one side decorated.

In the case of single-sided makeup, paper impregnated with the same resin as the barrier paper, called balance paper, is thermocompressed to maintain balance with the surface being decorated and to prevent warping.

In order to obtain a butt end surface (5) of a shape suitable for attaching a side core material, which will be described later, to the end of the board, for example, the end surface (5) shown in Fig. 2b, Fig. 3b, and Fig. 4. Cut to . In this case, the resin-impregnated paper layer (4) on the surface of the decorative board is left behind to cover and decorate the end surface later. In the case of double-sided decorative boards, at least one resin-impregnated paper layer remains.

As shown in Figure 2 C1 Figure 3 C1 Figure 4 C, attach the side core material (6), such as wood or medium density fiberboard, to the cut end of the wood with adhesive. Note that if the end surface of the board is cut to have a step (7) as in the example in Figure 2 and the example in Figure 3, this step will be used to securely and firmly attach the core material to the end of the wood. It can be attached to.

When particle board is used as the substrate, as schematically shown in Figure 5, the surface layer (8) of the particle board is dense and the inner layer (9) is rough, so the stepped portion (7) must be provided in a dense layer. There is. This is because when a resin-impregnated paper layer, which is a decorative layer, is pasted on the wood end, if some rough parts remain on the wood end surface.
This is because unevenness appears on the surface, which deteriorates the finish of the wood finish.

As shown in Figure 2 d, Figure 3 d, and Figure 4 d, at least part of the edge of the resin-impregnated paper layer (4) left during cutting was folded. is attached to the end surface (5) formed by the side core material via an adhesive.

As the adhesive, those commonly used for bonding paper products can be used.

Examples include hot melt adhesives, rubber adhesives, and ethylene vinyl acetate.

When attaching the resin-impregnated paper layer to the butt end surface, heat it to soften it if necessary. The heating temperature is preferably 100-18
It is 0°C.

Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

〔Example〕

A low-pressure melamine resin (melamine formaldehyde resin)-impregnated barrier paper (syncytial rate 45%, Santotsubu M-30 manufactured by Nissan Chemical Co., Ltd.) was applied to the front and back surfaces of a 15-inch thick particle board.
0), Decorative paper impregnated with melamine resin for low pressure (syncytial rate 60%)
, Nissan Chemical Santotsubu M-701) were sequentially contacted, and 3
0kg/cm! , After hot pressing at 170°C for 40 seconds,
The end of the wood was shaved with a tenoner as shown in Figure 2.

Afterwards (MDF), a core material made of medium density fiberboard is adhered to the end of the wood with adhesive, and hot melt resin (EVA hot melt, manufactured by Nippon Fuller -2) is applied to the end surface of the 5 core material and the board. Then, the edges of the decorative paper were bent along the end surface and adhered to obtain the desired decorative board.

The obtained decorative board had good surface properties, and in particular, the decorative finish at the end of the wood was smooth and had no irregularities. Also,
The bottom mold was easy.

〔Effect of the invention〕

As is clear from the above, according to the present invention, the bottom shape is easy;
It is possible to provide a method for manufacturing a decorative board with an excellent decorative finish on the wood end and high productivity.

[Brief explanation of drawings]

Figure 1 is a schematic cross-sectional view of the decorative board, Figures 2, 3,
FIG. 4 is a sectional view showing the steps of the method of the present invention, and FIG.
The figure is a schematic cross-sectional view showing the process of cutting the end of a particle board decorative board. 1...Substrate, 2...Resin-impregnated barrier paper, 3...
Resin-impregnated decorative paper, 4... Resin-impregnated paper layer, 5... End surface, 6... Side core material, 7... Step portion, 8... Surface layer,
9...Inner layer.

Claims (1)

[Claims] After sequentially laminating a resin-impregnated barrier paper and a resin-impregnated decorative paper on the substrate surface and bonding them under heat to form a resin-impregnated paper layer to form a decorative board with an undecorated end, the edges of the decorative board are In this step, the end of the substrate is cut into a desired shape while leaving the resin-impregnated paper layer, and then a side core material is attached to the end,
A method for producing a decorative board with end decoration, characterized by forming a end surface at least partially constituted by the side core material, and pasting the remaining resin-impregnated paper layer on the end surface. .