JPH1034853A - Method for molding decorative plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mold a decorative plate in a short time by elimination of a primer- treating step by sequentially placing a specific film and a coal plate on the surface of the plate obtained by coating a surface of a base material with adhesive and laminating them, heating, pressurizing it and then coating its surface with resin. SOLUTION: In case of coating a surface of a base material 2 with polyester resin adhesive by using a roll coater, laminating a decorative sheet 4, heating and pressurizing it by a press 13, it is heated, pressurized by a press 13 and a heating platen 15 by using an oxygen-containing coal plate 6 instead of a conventional glazing plate, and then a surface of the sheet 4 is coated with an oxygen permeable film 7. As a result, a polyester resin adhesive surface layer portion leached to the surface or vicinity of the surface of the sheet 4 can be unhardened by a hardening inhibiting effect of the oxygen supplied from the plate 6 via the film 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a decorative board used for building materials and furniture.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a decorative board 1 has an adhesive 3 on the surface of a substrate 2, for example, a wood board such as a plywood or an inorganic board such as a slate or calcium silicate board. , And decorative paper 4, for example, 20-1
Laminate 20g / m ² thin paper or titanium paper,
After heating and pressing with a press device, the surface of the decorative paper 4 is coated with a polyester resin 5 to be molded.

More specifically, an adhesive 3 is applied to the surface of a base material 2 via a roll coater 11, and the decorative paper 4 is bonded by a laminator 12 (see FIG. 3). And
The substrate 2 on which the decorative paper 4 is bonded is sandwiched between a pressing device 13, for example, a hot platen 15 on which a hot platen 15 and a gloss plate 14 are mounted, and heated and pressed to cure the adhesive and adhere. 4). Next, a polyester resin 5 is placed on the decorative paper 4.
Is coated to a thickness of 100 to 200 μm.

Here, as the adhesive 3, in order to ensure durability by impregnating the decorative paper 4, an adhesive mainly composed of a polyester resin, for example, 100 parts of a polyester resin, 100 parts of an inorganic filler, a curing agent A two-part adhesive is used.

When the decorative board 1 thus formed is cut into a predetermined shape, the decorative board 1 is separated at the interface between the adhesive 3 leached to the surface of the decorative paper 4 and the polyester resin 5 coated thereon. There was a problem. That is, when the adhesive 3 leached to the surface of the decorative paper 4 is cured, the polyester resin 5 coated on the surface does not adhere.

For this reason, the decorative paper 4 is adhered to the base material 2 via the adhesive 3 and the adhesive 3 is cured by press molding. (See, for example, JP-A-5-338104).

[0007]

However, the above-described method of forming a decorative board has a drawback that the number of forming steps is increased and the cost is increased because a primer treatment is required.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a method of forming a decorative board in which a decorative board can be formed in a short time without the need for a primer treatment step.

[0009]

According to the present invention, a polyester resin-based adhesive is applied to the surface of a substrate and a decorative paper is attached thereto, and an oxygen-permeable film and an oxygen-containing coal plate are sequentially placed on the surface of the decorative paper. The decorative paper is then heated and pressed by a press device, and then the surface of the decorative paper is coated with a polyester resin.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

In order to form the molded plate 1, a polyester resin-based adhesive 3 is applied to the surface of the substrate 2 via a roll coater 11 via a roll coater 11, and a decorative paper 4 is bonded to the surface. After heating and pressurizing with the device 13, the surface of the decorative paper 4 is coated with the polyester resin 5, and the description is omitted.
Only the point of heating and pressurizing will be described.

When the base material 2 to which the decorative paper 4 is bonded is heated and pressurized by the press device 13, an oxygen-containing coal plate 6 is used instead of the glossy plate 14, and furthermore, the oxygen-permeable coal plate 6 The conductive film 7 is laminated.

As a result, the surface layer of the polyester resin adhesive 3 leached to the surface or near the surface of the decorative paper 4 is cured by the oxygen-containing coal plate 6 through the oxygen-permeability film 7 to cure the oxygen supplied. It can be uncured due to the forbidden effect. That is, by reacting the radical generated during the curing of the polyester resin with oxygen, the reaction of the radical can be stopped.

Therefore, after that, the polyester resin 5
Uncoated polyester resin-based adhesive 3 whose surface layer is inhibited from being cured when the polyester resin 5 is coated
Dissolves, and is cured and integrated with the curing agent contained in the polyester resin 5, so that the coated polyester resin 5 can be reliably prevented from peeling off. In this case, it is not necessary to perform a primer treatment for bringing the polyester resin 5 into close contact, so that the molding process can be reduced and molding can be performed in a short time, and the cost can be reduced.

Here, as the oxygen-containing coal plate 6, a material that can be repeatedly used in press molding and that contains oxygen, for example, paper, a hard board, or a silicon rubber sheet is used.

The oxygen-permeable film 7 has a releasability from the polyester resin-based adhesive 3 in response to the above-mentioned oxygen-containing coal plate 6 having poor releasability from the polyester resin-based adhesive 3. Having a thickness of 25 μm
Although a stretched or non-stretched polypropylene film is employed, a synthetic resin film such as a polyethylene film or a soft polyvinyl chloride film can also be used.

As an example of the decorative board 1, a 6 mm-thick calcium silicate board is used for the base material 2, and the orthodontic polyester resin 100 is used for the adhesive 3.
An adhesive consisting of 50 parts of a filler, 50 parts of a filler and 2 parts of a medium-temperature curing peroxide is used, and is applied to the base material 2 at a rate of 80 g / m ² . Further, as the decorative paper 4, 100 g /
Titanium paper m ² is used. Press machine 1
In No. 3, the hot platen temperature was 130 ° C. and the pressure was 10 kgf / c.
Heating and pressurization is performed at m ² for 120 seconds.

The adhesion of this example was tested by a grid test, but no abnormality was found in the performance evaluation according to JAS1 class.

[0019]

As described above, according to the present invention, a polyester resin-based adhesive is applied to the surface of a base material and a decorative paper is adhered to the decorative paper, and an oxygen-permeable film and an oxygen-containing coal plate are provided on the surface of the decorative paper. After being placed in order and heated and pressed by a press device, the surface of the decorative paper is coated with a polyester resin, so that the surface layer portion of the polyester resin adhesive leached to the surface of the decorative paper is uncured. The polyester resin can be brought into close contact, and the cost can be reduced by eliminating the need for a primer treatment step, and the decorative board can be formed in a short time.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a pressing step in the method for forming a decorative board of the present invention.

FIG. 2 is an explanatory view schematically showing a decorative plate.

FIG. 3 is a schematic view showing a step of attaching decorative paper to a base material.

FIG. 4 is a schematic view showing a conventional pressing step.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decorative board 2 Base material 3 Adhesive 4 Decorative paper 5 Polyester resin 6 Oxygen-containing coal board 7 Oxygen permeable film

Claims (1)

[Claims] 1. A polyester resin-based adhesive is applied to the surface of a base material and a decorative paper is attached thereto. An oxygen-permeable film and an oxygen-containing coal plate are sequentially placed on the surface of the decorative paper and heated by a press device. A method for forming a decorative sheet, comprising applying a polyester resin to the surface of the decorative paper after pressing.