JPS59222348A - Manufacture of irregular pattern decorative sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for obtaining a decorative sheet with an excellent design and a wood-grain uneven pattern rich in wood texture.

Conventionally, a particularly effective method for synchronizing the printed pattern and the embossed pattern on a decorative sheet is to apply a top coat paint after printing, dry it, and then print the conduit part with ink containing a large amount of extender pigment, to create a visual effect. There is a matte gloss method to create an uneven feel, and a method in which a top coat paint repellent such as a silicone resin is added to the conduit ink and only that part is repelled and indented during top coating to create an uneven effect. The former is visually uneven and is inferior in terms of design because the conduit section that should be concave is convex. Furthermore, there is also a problem in that the matte feel of the ink is limited because there is a technical limit to the amount of extender pigment added. In the latter case, the conduit part is theoretically concave, but the thickness of the Topco-1 paint must be a considerable amount (approximately 15 to 20 μm thick or more) to make it feel uneven to the touch.

However, as the top coat becomes thicker, the repellency spreads out more to the periphery of the conduit ink area, and the sharpness is lost. Visually, if the top coat becomes matte, the unevenness will diminish.

Therefore, the present invention was completed as a result of inspection to reveal a wood grain pattern with excellent unevenness both visually and tactilely.As a conduit ink, it only has the effect of repelling the top coat and making it concave. Instead, after repulsion, the conduit part is foamed to roughen the conduit part, giving it a strong matte feel. That is.

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

As shown in FIG. 1, the present invention is based on profit margin (1), which is paper with a weight of 23 to 50 yen, which is normally used for construction material paper. ! i'/ff
Use paper such as thin paper, thick paper, paper mixed with resin, or impregnated/impregnated paper. After printing (2) the wood grain pattern other than the conduit part on this base material (IJ), print the conduit part (3) with a paint-repellent ink that has a foaming effect.Such ink can be used as follows. Obtainable.

That is, a thermoplastic resin such as urethane, acrylic, ethylene vinyl oxide, or vinyl chloride is used as a vehicle, and a blowing agent is added to the vehicle. Foaming agents include nitrolyte, sulfonyl hydrazide, azo and mixed types, but are optional. The amount added varies depending on the resin blowing agent, but is approximately on the order of several percent. Furthermore, add 2 to 5% top coat paint repellent (silicone resin and fluororesin are particularly good).
(It is also possible to increase the amount further if necessary) to obtain an ink for printing conduit portions with even color. After printing (3) the conduit part with this ink, a top coat paint is applied to form a top coat (4), and the paint is repelled only on the conduit part to form four parts. The top coat resin is
Use curable materials such as urethane, acrylic urethane, acrylic, and amino alkyd. Thereafter, the print (3) is foamed at the same time as the top coating material is cured using heat higher than the decomposition temperature of the foaming agent in the ink of the print (3) in the conduit portion, thereby forming a foamed print (3)'. (See Figure 2). This print (
The foaming ratio in 3) does not need to be high, and it is sufficient to roughen the conduit portion.

The tuned embossment thus obtained is printed (31'
The periphery of the print (3)' is concave due to the repulsion of the top coat, but the print (3)' itself is convex, and the matte feel is emphasized (・), making it visually and tactile. You can also express bold unevenness.

Next, examples of the present invention will be described.

A wood grain pattern is printed on 309/nL2 thin paper made by adsorbing cationic acrylic resin to pulp fibers using the usual gravure printing method, and after the conduit part that is to be concave is made with the following composition. Print using normal gravure printing method using ink.

Next, 8 gdry/m' of aminoalkyd resin was applied to the wood grain pattern paper using a gravure printing method, and then the paper was heated at 150°.
The ink was heated at C to foam the ink in the conduit portion at the same time as curing. Thus obtained 1 piece of unevenness 4 pieces 4. The decorative paper had an excellent design with bold unevenness.

Since the present invention has the above-described configuration, it has the following excellent effects. That is, according to the present invention, it is possible to create a strong sense of unevenness both visually and tactilely, which could not be achieved by conventional methods. You can see the matching embossed decorative sheet.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of a decorative sheet before foaming, and FIG. 2 is a cross-sectional view of a completed decorative sheet with an uneven pattern L-. (1)...Base material (2)...Printing (other than the conduit part) (3)...Printing (on the thick shield' part) (3) - (Foamed) printing (4) ...Top coat patent applicant Toppan Printing Co., Ltd. Representative Aio Meiki

Claims (1)

[Claims] 1) Printing a pattern on a base material using a repellent ink,
In manufacturing a decorative sheet with a textured pattern that has a four-part surface that matches the pattern by applying a topcoat resin on top and solidifying it, a paint-repellent ink that has a foaming effect is used, and the concave portions are solidified by the topcoat. 1. A method for producing a cosmetic sheet with an uneven pattern, which is characterized by simultaneously foaming and roughening the surface. 2) The method for producing a decorative sheet with an uneven pattern according to claim 1, characterized in that an ink is used, in which 5 to 150 PI-In of silica gel powder is further added to a paint-repellent ink having a foaming effect.