JPH0986096A - Transfer sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer sheet for efficiently providing a picture pattern having highly decorative property in a method for manufacturing a decorative plate by a transfer method using an elastic body or a plastic body. SOLUTION: On a polyethylene terephthalate film 1 having a thickness of 10-50μm, a polyolefin resin 2 is provided as a release layer having a thickness of 10-40μm so as to make a base sheet. On the release layer of the base sheet, a picture pattern layer 3 made of an ink which can be peeled is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer sheet for use in a transfer decorative board in which various decorative board base materials are efficiently provided with highly designable designs.

[0002]

2. Description of the Related Art Conventionally, various decorative panels have been used for interior and exterior of houses. In recent years, products having a pattern on the surface have been favored along with the trend toward higher quality and higher design. . As a method of applying a pattern on the surface, there are paints of multiple colors on the decorative board base, sprinkling sand, laminating a sheet on which a pattern is printed, etc., but other transfer methods using an elastic body or a plastic body There is.

In the above-mentioned transfer method, when an isocyanate-curable enamel resin is used as the base coat, when the picture layer is transferred to the surface of the decorative board substrate, the heat of about the softening point of the base coat resin is not transferred to the base coat layer. There is a problem that the adhesiveness is deteriorated or the adhesiveness is insufficient. In particular, when the adhesiveness is low, there is a case where after the decorative sheets are applied to the interior and exterior of the house, heat shrinkage is repeated due to changes in temperature and the like, and interlayer peeling occurs with the passage of days, which causes a problem in durability.

As the transfer sheet used in the method for manufacturing a decorative board by the transfer method, there are various materials and configurations, but polypropylene laminated paper has been widely used because of its cost and releasability from the pattern layer. However, since paper is used as the base sheet, the thermal conductivity is low, and it is difficult to increase the transfer speed while maintaining the transferability and the adhesion.

On the other hand, when a single polyolefin film such as polyethylene or polypropylene or a polyvinyl chloride resin film is used as the base sheet, the heat resistance is low and the film is melted by the heat of the transfer roll, resulting in poor workability. It was bad.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is a method of manufacturing a decorative plate by a transfer method using an elastic body or a plastic body. In order to provide a transfer sheet for efficiently providing a design with high design.

[0007]

In order to solve this problem, the present invention provides a polyolefin resin having a thickness of 10 to 40 μm on a polyethylene terephthalate film (hereinafter referred to as PET film) having a thickness of 10 to 50 μm. Provided is a transfer sheet, which is provided as a release layer, and a pattern layer made of an ink capable of peeling is provided on the release layer of the base sheet.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of the cross-sectional structure of the transfer sheet of the present invention. It has a structure in which a base film (1) of a transfer sheet, a resin layer (2) having releasability, and a pattern layer (3) are sequentially provided.

Thickness 10 used for the base sheet of the transfer sheet
The thickness of the PET film of ˜50 μm may be selected depending on the degree of surface unevenness of the decorative plate base material and the transfer conditions, but in the experiments of the inventors, the best result was obtained with the thickness of 10 to 25 μm. ing.

Polypropylene, polyethylene or the like can be used as the polyoff-reflective resin having a thickness of 10 to 40 μm to form the release layer. . The base film is laminated by a method such as dry laminating or extrusion laminating. The thickness of the film may be selected depending on the degree of surface unevenness of the decorative board base material and the transfer conditions.
In the experiments conducted by the inventors, the best results have been obtained with a polypropylene resin of 10 to 20 μm.

The optional pattern layer is printed by a method such as ordinary gravure printing or screen printing. The binder of the ink used is determined in consideration of the durability of the final product.

In FIG. 2, a transfer sheet (6) is placed on a decorative board substrate (5) provided with a base coat layer (4) so that the pattern layer side is in contact, and a heated elastic roll (7) is used. Thermocompression bonding, then peel the transfer sheet base sheet,
It shows a state in which the pattern layer is being transferred.

As the decorative board base material, plywood, slate board,
Asbestos cement board, calcium silicate board, magnesium silicate board, wood chip cement board, etc. can be used.

The elastic body need not be a roll in shape, and silicon is mainly used as a material, but neoprene and SBR can also be used, and a plastic body can also be used. .

By a series of these operations, a decorative plate having an extremely high design can be obtained. Also, clear coating can be applied on the surface for protection of the surface.

[0016]

EXAMPLE A PET film having a thickness of 25 μm and a thickness of 20
A μm polypropylene resin film was laminated as a release layer by a dry laminating method. Then, a desired pattern was printed by a gravure printing method using an ink having an acrylic resin as a binder to prepare a transfer sheet.

A slate plate having a flat surface was used as a base material for the decorative plate, and the surface was subjected to dust removal and sealer treatment. A white isocyanate-curable urethane resin enamel base coat using titanium oxide as a pigment was applied to this surface by air spray at 80 g / m ² and dried in an oven at 80 ° C. for 5 minutes.

Subsequently, the transfer sheet was placed so as to be synchronized with the decorative base material, and the surface hardness heated to 150 ° C. was 4%.
Transfer was performed using a roll formed of 0 ° silicon.
The transfer speed was 10 m / min and the pressure was 20 kg / cm. After the base sheet of the transfer sheet was peeled off, an acrylic urethane resin type top coat was applied as a protective layer on the surface by air spray. The coating amount is 120 g / m ² and is 8
Dry in an oven at 0 ° C for 15 minutes. In the above steps, problems such as fusing of the film and burrs of the transfer layer did not occur. Further, the transferred pattern became excellent in design, and the surface durability and interlayer strength were also excellent.

[0019]

As described above, according to the present invention, the pattern layer is releasably provided on the base sheet which is obtained by laminating the polyolefin resin on the PET film as the release layer. The heat of the elastic body is well transferred to and the initial adhesion between the pattern layer and the base coat layer can be improved. Further, since the release layer is provided, it is not necessary to provide a release layer on the pattern layer, and the transfer layer as a whole can be made thin, so that it is possible to suppress the occurrence of burrs in the transfer layer during transfer. In addition, the heat resistance is high, and the film is less likely to be melted by the heat of the transfer roll during transfer, so that workability can be improved. As described above, it is possible to obtain a decorative board having a highly durable and efficiently designed pattern.

[Brief description of drawings]

FIG. 1 is a schematic view showing a configuration of a cross section of a transfer sheet used in the present invention.

FIG. 2 is a schematic diagram showing a state in which a transfer sheet is thermocompression bonded by a roll.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base film of transfer sheet 2 ... Release layer 3 ... Picture layer 4 ... Base coat layer 5 ... Decorative plate base material 6 ... Transfer sheet 7 ... Transfer roll

Claims (1)

[Claims] 1. A polyolefin resin having a thickness of 1 on a polyethylene terephthalate film having a thickness of 10 to 50 μm.
Provided as a release layer having a thickness of 0 to 40 μm to obtain a base sheet,
A transfer sheet comprising a release layer of the base sheet and a pattern layer made of an ink capable of being peeled off.