JPH04223165A - Manufacture of decorative laminated sheet - Google Patents

Abstract

PURPOSE:To develop a sharp multicolor pattern as a patterned interior and exterior material by a method wherein a plurality of multicolor printed papers impregnated with a resin are superposed one upon another and an embossed surface is formed to the surface of the superposed one and ground to develop a color pattern. CONSTITUTION:A plurality of multicolor printed papers impregnated with a resin are superposed one upon another to form color pattern layers 2-1, 2-1 and resin impregnated paper is laminated to the rear of the superposed one as a base material layer 3. Next, the embossed surface of a punched upper mold is aligned with the printed papers and a plate-shape lower mold is placed on the base material layer 3 and the laminated one is bonded under heating and pressure by a hot plate press to form the color pattern layers 2-1, 2-2 on the surface of the base material layer 3 as two embossed surface layers. Next, the embossed surface layers are ground to develop a color pattern to make it possible to obtain a well finished two-color embossed decorative laminated sheet.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a laminated board that can be used as a patterned interior/exterior material to provide a clear multicolored pattern.

0002

BACKGROUND OF THE INVENTION Laminated boards with colored patterns are manufactured by impregnating printing paper with resin and layering it with other resin-impregnated paper, or by applying pressure and heating to the surface of the paper by applying a die cutter having an uneven surface. An example is shown in FIG. A colored pattern layer 2 is formed on the surface side of the base material layer 3, and a protective resin layer 1 is further formed on the surface. This configuration is monotonous because it only uses printed color patterns. Furthermore, attempts have been made to create a sense of variety and luxury by adding unevenness to the surface and adding something to the printing ink that changes its reflectance depending on the light.

0003

[Problems to be Solved by the Invention] The conventional technology is to use a single sheet of printing paper as the surface layer, but it is also possible to print in multiple colors.
There is a limit to the color, and beyond that there is a problem of lack of sharpness. The various attempts mentioned above also have obstacles that make it difficult to create multiple colors. An object of the present invention is to solve the above-mentioned problems and provide a method for manufacturing a decorative laminate that can express a clear multicolored pattern.

0004

[Means for Solving the Problems] In order to achieve the above object, the present invention overlaps a plurality of sheets of resin-impregnated multicolor printing paper, overlays the resin-impregnated paper as a base layer on the back side, and further prints. This decorative laminate is made by placing the uneven surface of a die cut on the paper side and a flat metal plate on the other side, then heating and pressing it with a hot plate press.The uneven surface of the laminate is then ground to create a colored pattern. This is the manufacturing method. FIG. 1 shows a cross-sectional view of a laminate finished with an uneven surface obtained intermediately by the method of the present invention. This is an example in which two layers, a colored pattern layer 2-1 and a colored pattern layer 2-2, are formed on the surface side of the base material layer 3 to form irregularities. The grinding method may be dry or wet, but if the amount of grinding is large, the dry method is preferable. As the abrasive material, a whetstone or abrasive paper with abrasive grains is used.

[0005]

[Operation] When grinding an uneven surface like the example shown in Figure 1,
The inner and outer color pattern layers are exposed to create a color pattern, but because it is ground in multiple layers instead of the traditional single color print layer, it produces a multicolor print effect that is twice as strong as before. Moreover, it produces a clear color pattern.

[0006]

[Example] Blue base paper A containing pigment (80g/m
), yellow base paper B (60 g/m2) coated paper impregnated with melamine resin, and kraft paper C for base material (140 g/m2).
m) with coated paper impregnated with phenolic resin,
The color surface is aligned with the uneven surface of the stainless steel mirror plate, and the flat surface of the mirror plate is aligned with the opposite surface.
After heating and pressurizing at 0°C and 100 kg/cm for 30 minutes,
A two-layer colored laminate having irregularities was obtained by cooling to 50° C. or lower. The uneven surface of this board was ground with dry belts #60 and #180, and further ground with a #400 wet belt to obtain a two-color embossed decorative laminate with a good finish.

[0007]

Effects of the Invention According to the present invention, a laminate with a multicolored pattern was obtained by combining two to three layers of colored patterns and grinding the surface irregularities. In addition, the color of this plate surface is clear, giving it a luxurious feel and having excellent wear resistance.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the present invention.

FIG. 2 is an explanatory diagram of a conventional method.

[Explanation of symbols]

1 Protective resin layer 2, 2-1, 2-2 Color pattern layer 3 Base material layer

Claims (1)

[Claims] Claim 1: Layer multiple sheets of resin-impregnated multicolored printing paper, layer the resin-impregnated paper on the back side as a base layer, align the uneven surface of the die cut on the printing paper side, and place a metal flat plate on the other side. 1. A method for producing a decorative laminate, which comprises heating and pressing a laminate with a hot plate press, and grinding the uneven surface of the laminate to create a colored pattern.