JPH08230129A - Manufacture of decorative plate - Google Patents

Abstract

PURPOSE: To manufacture a low-cost decorative plate by relatively less steps by mixing thermosetting resin with woody fiber, then forming it to form a mat, coating the mat with adhesive, placing a decorative sheet, and them hot press molding it. CONSTITUTION: After thermosetting synthetic resin is mixed with woody fiber, it is formed on a flat mold 10 to form a matlike article 11, and adhesive is sprayed by a spray coater 12 from above to coat the surface of the article 1 with the adhesive. Then, the article 11 placed on the mold 10 is mounted on the lower pressing plate 13 of a hot press, and a decorative sheet 14 is mounted on the article 11 coated with the adhesive. Thereafter, an upper pressing plate 15 of the press is moved down, and hot press molded. Thus, the article 11 is hot pressed to mold a woody fiber board, and the sheet 14 is bonded to the substrate to obtain a decorative sheet 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a decorative board used for furniture, buildings and the like.

[0002]

2. Description of the Related Art A conventional decorative board is made by mixing a wood fiber with a thermosetting synthetic resin, forming a mat to form a mat, and heat-pressing to make a wood fiber board (fiber board). An adhesive was applied on this wood fiber board, a decorative sheet was placed on the wood fiber board, and hot pressing was performed (hereinafter referred to as the first method). In addition, for a decorative board with a three-dimensional uneven pattern on the surface, after applying an adhesive to the surface of the wood fiber board, place the decorative sheet on the coated surface, place the embossing board from the top and press it under high pressure. It was manufactured by press molding and forming a decorative uneven pattern on the surface (hereinafter referred to as the second method).

[0003]

However, the first method requires two steps of manufacturing a wood fiberboard and hot pressing a decorative sheet, which complicates the manufacturing process and reduces the cost. There was the problem of becoming expensive. Further, in the second method, in addition to the above problems, since the unevenness is forcibly formed on the relatively hard wood fiber board which is the substrate by the embossing machine at a high pressure, after the production, the ambient moisture is absorbed and released. There is a problem that a phenomenon of returning to the original state (that is, a spring bag) occurs. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of manufacturing a decorative sheet that can be manufactured at a low cost with a relatively small number of steps and that does not cause springback or the like when an uneven pattern is formed on the surface. And

[0004]

A method according to the above-mentioned object.
The method for manufacturing a decorative board described above comprises mixing a thermosetting synthetic resin into a wood fiber, forming the mat to form a mat, applying an adhesive on the mat, and placing a decorative sheet thereon. After that, it is hot pressed. And claim 2
The method for manufacturing a decorative board described above comprises mixing a thermosetting synthetic resin with a wood fiber, forming the mat to form a mat, applying an adhesive on the mat, and placing a decorative sheet thereon. After that, hot press molding is performed on the decorative sheet via an embossing board having an uneven pattern. Here, the wood fiber is a raw material of a fiber board, and is obtained by defibrating wood or other plant fiber, and the thermosetting synthetic resin is phenol resin, melamine resin, isocyanate resin or the like. The decorative sheet according to the method of claim 2 is
As long as it has sufficient strength to withstand heat compression molding, for example, a decorative paper with a desired pattern printed on the surface, a backer made of a resin sheet or the like is laminated on the back surface to enhance durability. It is preferable to use the above.

[0005]

The method for manufacturing a decorative sheet according to claims 1 and 2 comprises mixing a wood fiber with a thermosetting synthetic resin, forming the mat to form a mat, and applying an adhesive on the mat to form a decorative sheet. Since thermal compression molding is performed after the placement, the process of thermal compression molding is only one step, and the manufacturing process is simplified.
In particular, in the method for manufacturing a decorative board according to claim 2, since a soft mat is coated with an adhesive and then heat compression-molded through a stamping board to form a three-dimensional pattern on the surface. The unevenness can be easily molded, and the occurrence of springback after manufacturing can be prevented.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. FIG. 1 is an explanatory diagram of a method for manufacturing a decorative board according to a first embodiment of the present invention, and FIG. 2 is an explanatory diagram of a method of manufacturing a decorative board according to a second embodiment of the present invention.

First, a method for manufacturing a decorative board according to a first embodiment of the present invention will be described. As shown in FIG. 1, wood fiber is mixed with a thermosetting synthetic resin such as phenol resin, melamine resin, or isocyanate resin. 3 to 13% by weight, and then formed on a flat mold 10 to form a mat-like material (one example of mat) 11, and a spray coater 12 is used to form a vinyl acetate resin emulsion, modified latex, urea. Adhesive consisting of melamine co-condensation (10
~ 50%) to spray on the surface of the mat-like material 11
Apply 20 g / m ² .

Next, the mat-like material 11 placed on the flat mold 10 is placed on the lower press plate 13 of the hot press machine,
The decorative sheet 1 is placed on the mat-like material 11 to which the adhesive is applied.
4, the upper press plate 15 of the hot press device is lowered, and hot press molding is performed. Here, the makeup sheet 14
Has a wood pattern or tile pattern printed on the front surface, and the back surface has a backer made of a resin sheet or the like laminated to improve the strength. The conditions of the hot press molding are
Pressure is 15 to 30 kg / cm ² , temperature is 120 to 200
It is carried out at a temperature of 2 to 5 minutes. As a result, the mat-like material 11 is heat-pressed to mold the wood fiber board, and the decorative sheet 14 is adhered to the surface of the wood fiber board to manufacture the decorative board 16.

Next, a method of manufacturing a decorative board according to a second embodiment of the present invention will be described. The same parts as those in the above embodiment are designated by the same reference numerals and detailed description thereof will be omitted. The mat-like material 11 coated with the adhesive by the spray coater 12 is placed together with the flat mold 10 on the lower press plate 13, the decorative sheet 14 is placed on the upper part, and then the embossed pattern with the uneven pattern formed on the back surface. Place the board 17 and the upper press board 1
5 is lowered to perform heat compression. The condition at this time is the first
It may be substantially the same as the embodiment of. Here, it is preferable that the embossing board is smooth so as not to damage the surface of the decorative sheet 14, and in some cases, a rubber-based elastic board may be used wholly or partially. .

As a result, the embossed pattern of the embossing board 17 is transferred, and the decorative plate 18 having the embossed pattern formed on its surface is manufactured. In this case, since the relatively soft mat-like material 11 is heat-pressed, it does not require high pressure as in the conventional case, can be easily molded, and does not forcefully press the fiber material. There is no pattern modification. Although the embodiment has been described as a batch type, the present invention can be applied to a continuous type using rollers or the like.

[0011]

As is apparent from the above description, in the method for manufacturing a decorative board according to the first and second aspects of the present invention, the heat pressing is completed in one step, so that the manufacturing cost can be reduced. Further, since the soft mat is clamped, it is possible to easily form the unevenness with a relatively low pressure, and it is possible to reduce the occurrence of springback or the like after manufacturing.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a method for manufacturing a decorative board according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a method for manufacturing a decorative board according to a second embodiment of the present invention.

[Explanation of symbols]

 10 Flat Mold 11 Matte Material 12 Spray Coater 13 Lower Press Plate 14 Decorative Sheet 15 Upper Press Plate 16 Decorative Plate 17 Embossing Plate 18 Decorative Plate

Claims (2)

[Claims] 1. A thermosetting synthetic resin is mixed with wood fibers and then formed into a mat to form a mat, an adhesive is applied onto the mat, and a decorative sheet is placed thereon.
A method for manufacturing a decorative board, which comprises hot pressing. 2. A thermosetting synthetic resin is mixed with wood fibers and then formed into a mat to form a mat, an adhesive is applied on the mat, and a decorative sheet is placed thereon.
A method for manufacturing a decorative sheet, comprising hot pressing and pressing the decorative sheet through an embossing board having an uneven pattern.