JPS6032583B2 - Decorative material manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative material having a concave-convex pattern, and more specifically, a decorative material having a two-tiered convex pattern having a second convex pattern at the top of the convex portion. The present invention relates to a manufacturing method.

Various decorative materials with uneven patterns have been proposed, such as forming convex parts using foaming ink or high solids ink, or using chemicals that promote or inhibit foaming. Although products have been manufactured, there are few that have a difference in height between the convex parts, and in particular, there have been no products that have a cross-like appearance by adding irregularities on top of the convex pattern.

In view of the above points, the present invention aims to produce a decorative material having a cross-like appearance by forming a two-tiered convex pattern.

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

First, as shown in FIG. 1, a pattern 2 made of ordinary ink and a convex pattern 3 made of a foamable resin composition are provided on a printing material 1 to form an arbitrary pattern, and transparent or A semitransparent resin is applied and dried to provide a top coat layer 4. Next, the top coat layer is cured by heating to form a convex pattern.

The heating conditions at this time must be such that the foaming agent in the convex pattern does not foam at first, and then it is important to heat the foam to a temperature higher than the decomposition temperature of the foaming agent in the convex pattern before curing is completed. It is. That is, at first, the heating is limited to just enough to harden the resin of the top coat layer to allow the resin to harden, and once the curing has progressed to a certain extent, heating to a temperature higher than the decomposition temperature of the foaming agent in the convex pattern causes the convex pattern to disappear. Start foaming. However, since the resin of the top coat layer has been cured to some extent, the expansion of the convex pattern is significantly restricted, and although the convex pattern as a whole hardly expands, the volume only increases very slightly. However, even though the top coat resin is applied to a uniform thickness, there are local differences in thickness, especially at the top of the convex pattern, so the pressure for foaming the convex pattern ultimately depends on this. The foam is concentrated in the thinner part of the top coat resin at the top of the convex pattern, and foaming occurs in that part in a protruding manner, forming a second convex pattern 5 as shown in FIG. . The degree of protrusion of this second convex pattern and the degree of volume increase of the first convex pattern as a whole depend on the type of foaming agent and top coat resin used, and the level of top coat resin when the foaming agent begins to decompose. It varies depending on the degree of hardening, so select and adjust conditions depending on the desired appearance of the pattern.

Printing materials include synthetic paper, resin-mixed paper, resin film, woven fabric, non-woven fabric, knitted fabric, wood materials such as plywood and particle board,
Fiberboard such as hardboard and isolation board,
Coating or impregnating synthetic resin on asbestos slate plates, stone bone boards, inorganic plates such as calcium silicate, metal plates such as steel plates and aluminum plates, glass plates, synthetic resin plates, nitrogen-based plates, and the above base materials. A combination of two or more of the above base materials, and others can be used.

Note that it is also possible to bond the decorative material of the present invention produced using a sheet-like printing material to a plate-like base material.

The foamable resin composition constituting the convex pattern includes resins such as vinyl chloride resin, vinyl chloride vinyl acetate copolymer resin, vinyl acetate resin, and acrylic resin, as well as azodicarbonamide, azobisisobutyronitrile, and diazo. Azo compounds such as aminobenzene, N,N'-dimethyl-N
, N' dinitrosoterephthalamide, and sulfonyl hydrazide compounds such as toluenesulfonyl hydrazide and benzenesulfonyl hydrazide.

Transparent or translucent resins forming the top coat layer include urethane resins, vinyl chloride resins, vinylidene chloride resins, vinyl acetate resins, polystyrene resins, acrylic resins, ABS resins, polyamide resins, and non-transparent resins. Saturated polyester resins, epoxy resins, phenolic resins, amino resins, polyvinyl alcohol, polyvinyl acetal, copolymers of styrene and acrylonitrile, and others can be used, and are arbitrarily selected according to the decomposition temperature of the blowing agent. .

Furthermore, by forming a foam layer on the back side of the iris material of the present invention, insulation properties, cushioning properties, etc. can be imparted to the Ikekanmura. Alternatively, a foamable resin may be applied and foamed simultaneously with the formation of the convex pattern or in a separate process.

According to the method of the present invention as described above, IQ salmon material having a two-tiered convex pattern with an additional convex pattern on the top of the convex pattern can be obtained, and has a special appearance that cannot be obtained by conventional methods. It is a diary material with .

Next, examples of the present invention will be shown.

[Example 1] When applying a four-color pattern on a roll of base paper with a basis weight of 30 mm using a gravure printing machine, three colors were applied with ordinary gravure ink and the other color was applied with foamed vinyl chloride base. A gravure ink mainly composed of is applied to form an unfoamed convex pattern, and then a transparent resin mainly composed of urethane resin is applied for 3 days/day to form an unfoamed convex pattern. So 48
Leave it for a while, and after the transparent resin hardens, heat it to 150℃ for 5 days.
When heated for a while, the entire convex pattern slightly foams and bulges a little, and the top of the convex pattern partially protrudes to form a second convex pattern, resulting in a decorative material that closely resembles an actual fabric. Ta.

[Example 2] Before heating the decorative material of Example 1 at 150 qo for 5 days, a foamed vinyl chloride base was applied to the back side using a gravure mesh roll for 100 to 200 minutes per day. A decorative material with a foam layer on the back side was obtained by foaming simultaneously with the foaming of the convex pattern.

[Brief explanation of drawings]

The drawings are cross-sectional views showing embodiments of the present invention. Fig. 1 shows a state in which a top coat resin is applied, Fig. 2 shows a state in which a second convex pattern is formed by heating, and Fig. 3 shows a state in which a top coat resin is applied to the back side. FIG. 4 shows the state in which the foamable resin is applied and the state in which the foam layer is formed on the back surface. 1... Printing material, 2... Pattern with normal ink, 3
...Convex pattern, 4...Top coat layer, 5...Second convex pattern, 6...Foamable resin layer, 7...Foam layer. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. An arbitrary pattern including an unfoamed convex pattern made of a foamable resin composition is applied to the surface of a printing material, and the entire surface is heated to a temperature higher than the decomposition temperature of the foaming agent in the convex pattern. A transparent or translucent resin with a low curing temperature is applied, and in the process of curing the transparent or translucent resin layer, the resin layer is first heated to around the curing temperature, and then heated to a temperature higher than the decomposition temperature of the blowing agent. A method for producing a decorative material, which comprises heating and forming a second convex pattern by foaming on a portion of the top of the convex pattern. 2. A patent claim characterized in that a foamable resin composition is applied to the entire back surface of the printing material and foamed by heat treatment when forming the second convex pattern to form a foam layer. A method for producing a decorative material according to scope 1. 3. The method for producing a decorative material according to claim 1, characterized in that a sheet having a foam layer is attached to the back side of the printing material.