JPS6358120B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative material, which is characterized by arbitrarily adjusting the gloss of the surface of the uppermost transparent resin layer.

Conventionally, the typical method for controlling the gloss of the surface of the transparent resin layer formed on the surface of decorative materials has been to add inorganic fine powder called a matting agent to the resin and increase or decrease the amount added. . However, it is difficult to uniformly disperse inorganic fine powder in the resin, and the gloss may change slightly each time it is applied, and even on the same coated surface, there may be local differences in gloss, causing uneven gloss. was.

In addition, many attempts have been made to obtain a difference in gloss that is in sync with the pattern in order to obtain a dimensional sense of unevenness. One of these methods is to form a pattern by combining an ink or paint containing a matting agent with an ink or paint that does not contain a matting agent, but with this method, the pattern is exposed on the surface of the decorative material. In applications that require high resistance, it has been necessary to use a hardening ink or paint, or to provide a surface protective layer on the pattern.

However, these curable inks and paints have poor shelf life and are expensive, contributing to high costs.Also, when a surface protective layer is provided, the uneven texture is significantly reduced due to differences in the gloss of the pattern. Ta.

Another method is to form a pattern that does not take into account differences in gloss, then apply a transparent glossy resin layer on top of it, and then partially apply dull ink in synchronization with the underlying pattern. Although this method has been proposed, it is difficult to match the dull ink to the underlying pattern, and the surface properties such as abrasion resistance are insufficient because the dull ink is exposed on the surface.

The present invention has been made to solve the above-mentioned drawbacks, and by using a heat-transferable substance and its promoter, the surface gloss can be improved without changing the conventional manufacturing process of decorative materials. To provide a method for producing a decorative material that is arbitrarily and uniformly adjusted, or a decorative material that has a difference in luster that is in sync with the pattern.

The present invention will be described in detail below with reference to the drawings.

First, as shown in FIG. 1, a layer 2 containing a substance that promotes the transfer of a heat-transferable substance is provided on a substrate 1, and a transparent resin layer 3 containing a heat-transferable substance is provided thereon.
When this is then heated, the heat-transferable substance in the transparent resin layer migrates to the surface of the resin layer, resulting in a transparent resin layer 4 with low gloss as shown in FIG.

The degree of gloss at this time can be arbitrarily adjusted by the amount of the heat-transferable substance added, the amount of the substance that promotes the transfer, or the heating conditions.

Further, as shown in Fig. 3, if a layer 2 containing a substance that promotes the transfer of heat-transferable substances is provided in a pattern, and the remaining part is patterned with normal ink 5, it becomes transparent as shown in Fig. 4. The heat-transferable substance in the resin layer can be selectively transferred to the surface of the resin layer, and a glossy area 7 can be formed from a low-gloss area 6 that matches the pattern, creating a visual unevenness. can appear.

Further, as shown in FIG. 5, a foamable resin layer 8 is formed on the base 1, and the foamable resin layer is placed in a layer of a material that promotes the transfer of heat-transferable substances provided in a pattern on the foamable resin layer 8. If a substance that suppresses foaming is included, or if a substance that has both the effect of promoting the migration of heat-transferable substances and the effect of suppressing foaming is included, the gloss will decrease as shown in Figure 6. A concave portion 10 and a convex portion 11 having the original luster are formed, thereby further emphasizing the three-dimensional effect.

Substrates include paper, synthetic resin film, metal foil, nonwoven fabric, woven fabric, wood board, metal plate, inorganic board,
Release sheet, release belt, etc., and 2
Composite materials that are a combination of more than one type are used.

The layer containing a substance that promotes the transfer of a heat-transferable substance is formed by adding the above-mentioned heat-transferable substance to a commonly used ink or paint, or a substance containing a substance that suppresses foaming of a foamable resin. ,
The promoting substance is preferably a substance that releases metals from the heat-transferable substance contained in the transparent resin layer, such as dithiol-S-triazine derivatives or metal salts thereof, which can be used in an amount of 5 to 50%.
%.

The resin that makes up the transparent resin layer is suitable for coating.
Any thermoplastic resin that can form a transparent film may be used, specifically vinyl chloride resin, acrylic resin,
Vinyl acetate resin, urethane elastomer resin, rubber latex, copolymer resins and mixed resins thereof, and others are used. The form of these resins can be arbitrary, such as plastisol type, emulsion type, water-soluble type, solution type, etc., and the thinner the thickness, the more pronounced the unevenness is due to the difference in gloss.

As the heat transferable substance, organic tin compounds, higher fatty acid paraffins, higher fatty acid amides, metal compounds of higher fatty acids, etc. can be used.

In addition, a foamable resin layer containing a known foaming agent such as an azo compound is provided between the transparent resin layer and the substrate, and a material such as the above-mentioned dithiol-S-triazine derivative is used as a substance that promotes the migration of heat-transferable substances. If a sulfur compound is used, the foaming of the foamable resin layer is suppressed in that area, and a difference in unevenness can be obtained that matches the difference in gloss.

According to the method of the present invention as described above, it is possible to easily obtain a decorative material whose surface gloss can be arbitrarily changed without changing the conventional process.

[Example 1] A cream-colored acrylic paint containing 20% trimercaptotriazine was applied to the entire surface of a 0.6 mm thick steel plate using a primer, and transparent polyurethane containing dibutyltin malate was applied on top of that using a primer. When the resin was applied to the entire surface and dried and solidified, a cream-colored steel plate with a matte surface was obtained.

[Example 2] Polyvinyl chloride plastisol containing azodicarbonamide as a foaming agent was applied onto flame-retardant paper with a basis weight of 80 g/m ² to semi-gel, and 20% of trimercaptotriazine was applied as a foaming inhibitor on top of it. After printing the joint parts of the tile pattern with ink containing % and the rest of the pattern with regular ink, transparent polyvinyl chloride plastisol containing dibutyltin dilaurate was applied and heated at 200℃ for 2 minutes. However, the parts corresponding to the joints have a matte surface and foaming is suppressed, resulting in concave parts, while the other parts have foamed convex parts that have the gloss inherent to vinyl chloride, resulting in a vinyl tile that closely resembles real tiles. It was done.

[Example 3] On thin paper with a weight of 23 g/ ^m2 , only the conduit part in the zelkova pattern wood grain pattern was coated with 30 g of trimerkabuto triazine.
%, and other inks were printed using normal inks.

Then, when a transparent vinyl chloride emulsion containing 10% dibutyltin laurate was applied on top of it and heated to gel, the luster of the vinyl chloride layer in the areas corresponding to the conduit portions of the underlying pattern decreased, and the natural wood A decorative sheet closely resembling was obtained.

[Brief explanation of drawings]

The drawings are cross-sectional views showing one embodiment of the present invention, and FIGS. 1 and 2 show before and after heating when a layer containing a heat transfer promoting substance is provided over the entire surface. Figures 5 and 6 show before and after heating when a layer containing a heat transfer promoting substance is applied in a pattern, and before and after heating when the unevenness and gloss difference due to foaming and foaming suppression are synchronized. Each figure is shown after heating. 1... Substrate, 2... Layer containing a heat transfer promoting substance, 3...
Transparent resin layer, 4... Transparent resin layer with low gloss, 5... Normal ink, 6... Area with reduced gloss, 7... Area with no reduction in gloss, 8... Foamable resin layer, 9... Heat transfer promoting substance and foaming suppression 10...concave portion, 11...convex portion.

Claims (1)

[Claims] 1. A method for producing a decorative material in which a transparent resin layer is provided on a substrate such as paper, synthetic resin film, plywood, etc., in which a layer containing a substance that promotes the transfer of a heat-transferable substance on the substrate By providing a transparent resin layer containing a heat-transferable substance thereon, the heat-transferable substance is transferred to the surface of the transparent resin layer when the transparent resin layer is heated, and the gloss of the surface is changed. A method for producing a decorative material characterized by: 2. The method for producing a decorative material according to claim 1, wherein the layer containing a substance that promotes the transfer of a heat-transferable substance is provided in a pattern. 3 Claim 1, characterized in that an organotin compound is used as the heat-transferable substance, and a sulfur compound is used as the substance that promotes the transfer of the heat-transferable substance.
A method for producing a decorative material according to items 1 to 2. 4. The decoration according to claims 1 to 3, characterized in that a vinyl chloride-based foamable resin composition layer is provided on the substrate, and a transparent vinyl chloride resin composition is used as the transparent resin layer. Method of manufacturing wood.