JPH0580747U - A decorative sheet that excels in unevenness - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] A decorative sheet A that has excellent projection and depression patterns with the same basis weight and a sufficient protruding height and sharp edges, and can express sharp and clear uneven patterns reliably. Is to provide. In a decorative sheet A in which a foamed or non-foamed uneven pattern b is provided by screen printing on a sheet main body a, an upper surface a ', a desired backing layer 1 has an upper surface 1'having a wetting index of 34 to 52 dyn / cm. The sheet body a is constructed by providing the emulsion-based surface layer 2 adjusted to the above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a decorative sheet, and more particularly to a decorative sheet having an uneven pattern formed by foaming or non-foaming on the surface by screen printing and having excellent unevenness expression.

[0002]

[Prior Art]

 Conventionally, as a decorative sheet excellent in this kind of unevenness expression, which is used for decorating the inner surface or outer surface or both inner and outer surfaces of, for example, buildings, furniture, electric appliances and vehicles, as shown in FIG. The surface of the sheet body (backing layer) 100 made of paper or the like is directly printed with a foaming ink or the like made of polyvinyl chloride resin containing a foaming agent in a predetermined pattern by screen printing to obtain the desired meat with the foam or the like. It was provided with a thick uneven pattern 200.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, the surface 100 ′ of the sheet body (paper) 100, which is the printing surface, is not smooth, so that the surface 100 ′ of the sheet body 100 is exposed to the solvent, plasticizer, etc. in the ink due to the capillary phenomenon. It was easy for the phenomenon that the ink went in and chased it and the ink followed it. In addition, when there is a resin layer on the paper (not shown), the ink inevitably wets the resin, and the ink tends to flow.

Therefore, as shown in FIG. 3, the convex portion 300 is in a stagnation state (forms a gentle slope 300a, 300a), and the protrusion height cannot be sufficiently obtained, or sometimes the edge 300b of the adjacent convex portion 300, 300 is formed. However, there was a problem in that the steps of the unevenness were not clear, and it was difficult to express a sharp and clear unevenness pattern because the 300b contacted each other. This is especially likely to occur when it is desired to represent irregularities such as fine patterns or complex patterns.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to obtain a sufficient protruding height and a sharp edge with the same basis weight so that a sharp edge can be obtained. It is an object of the present invention to provide a decorative sheet that is excellent in unevenness expression, in which clear and sharp unevenness patterns are reliably expressed.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the technical means of the present invention is, in a decorative sheet having a foamed or non-foamed uneven pattern formed by screen printing on the upper surface of the sheet body, on the upper surface of a desired backing layer, By providing an emulsion type surface layer whose wetting index is adjusted to 34 to 52 dyn / cm, the contact angle of the ink with the sheet body is made close to 90 °, and the edge of the ink is sharper perpendicular to the sheet. This is the construction of a seat body that can reliably express patterns.

[0007]

[Action]

 By the above technical means, the contact angle of the ink with respect to the sheet surface which is the printing surface is adjusted by the emulsion surface layer, and the convex portion of the uneven pattern provided by being printed on the sheet main body (on the surface layer) is The sheet is suddenly launched from above the sheet body (on the surface layer) without sagging.

[0008]

【Example】

 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In the drawing, A indicates a decorative sheet excellent in unevenness expression of the present invention, and the sheet A is foamed or non-foamed by screen printing on a sheet body a. It is configured by providing a foamed uneven pattern b.

The sheet main body a comprises an emulsion type surface layer 2 having a wettability index adjusted to 34 to 52 dyn / cm on the upper surface 1 ′ of a desired backing layer 1 made of paper, cloth, PVC film or the like. . The thickness, material, etc. of the backing layer 1 are not limited in any way, and each object such as a building (such as wallpaper), furniture (such as surface decoration material), or a vehicle (such as interior material) It can be changed appropriately according to the product.

The surface layer 2 is an emulsion type treatment agent, and in particular, an acrylic emulsion treatment agent or a PVC. Treatment agent having a wettability index arbitrarily adjusted within a range of 34 to 52 dyn / cm. An acrylic emulsion treatment agent or the like is preferable, and the acrylic emulsion treatment agent or the like is applied to the upper surface 1'of the backing layer 1 by coating, for example, in a basis weight of about 1 to 50 g / m ² . That is, as a result of repeated examinations and tests by the applicant of the present application, when the wetting index of the sheet surface becomes 34 dyn / cm or less, the ink easily wets the surface, and the ink flows and falls, and on the contrary, 52 dyn / cm or more. Then, we found the fact that the ink adhesion deteriorates and the thin line expression breaks or curls, and the wetting index is limited to the above values.

The determination of the wetting index (dyn / cm) of the surface layer 2 was performed using a reagent used in JIS-K6768.

Furthermore, the designability may be improved by adding a luster modifier, a coloring agent, a decorating agent (mica powder), etc. to the above-mentioned treatment agent.

The concavo-convex pattern b includes a well-known foaming ink made of a foaming resin containing a foaming agent, for example, a desired foaming agent, on the upper surface a ′ of the sheet body a provided with the emulsion surface layer 2. A foam formed by printing a predetermined pattern (irregular pattern) by a rotary screen printing method using an emulsion-polymerized PVC or the like, and then heating the foamable ink at a desired temperature to foam the foamable ink. .. and convex portions 4 ... Although not shown, the uneven pattern b may be made of a non-foamed body made of a non-foaming ink (such as the emulsion-polymerized PVC).

Therefore, in the decorative sheet A configured as described above, the unevenness pattern b made of foam is formed on the upper surface a ′ (on the surface layer 2) of the sheet body a whose surface wettability is adjusted. As shown in FIG. 1, the protrusions 4 ... were sharply raised from the top of the sheet main body a (on the surface layer 2) and did not become flat, so that the edges 4a ... is very sharp, and the protrusion height of the entire convex portion 4 is sufficiently obtained, so that a sharp and clear uneven pattern b can be surely expressed.

FIG. 2 shows an embodiment in which a backing layer 1 having a vinyl chloride resin layer 1b provided on the upper surface of a paper 1a or the like is used. That is, an emulsion-type surface layer 2 having a wetting index adjusted to 34 to 52 dyn / cm is provided on the upper surface 1'of the backing layer 1 to form a sheet body a, and a recess is formed on the sheet body a. 3 and a convex portion 4 are provided, and a concave convex pattern b is provided, which is directly formed on the vinyl chloride resin layer 1b by a rotary screen printing method using a resin or the like made of emulsion polymerization PVC. When the pattern (concave pattern) is printed, it is of the same kind and has good compatibility, and as a result, the convex portion 4 has a problem that the edge flows and sinks. However, by providing the emulsion surface layer 2 as described above, The surface wettability is adjusted and the above problems are eliminated. The rest of the configuration, operation and the like are the same as those of the decorative sheet A shown in FIG.

Table 1 shows an example of specific implementation (printing results when the wetting index is adjusted to various numerical values). It should be noted that, in the table, the PVC. The surface layer 2 was provided by coating and drying a treatment agent comprising an acrylic emulsion in an amount of about 15 g / m ^2, and the result was obtained by rotary screen printing an emulsion-polymerized PVC-based ink on the surface layer 2.

[0017]

[Table 1]

[0018]

[Effect of the device]

 In the present invention, the sheet body is formed by providing the emulsion-based surface layer whose wetting index is adjusted to 34 to 52 dyn / cm on the upper surface of the desired backing layer, so that the wettability of the sheet body surface, which is the printing surface, is adjusted. Then, the convex portion of the uneven pattern printed and provided on the sheet body (on the surface layer) is rapidly raised from the sheet body (on the surface layer) without sagging. Therefore, the protrusions have the same basis weight and a sufficient protrusion height, and a sharp edge is obtained, so that the uneven step is clear, and therefore, even if it is a fine pattern or a complicated pattern. As a result, sharp and clear concave and convex patterns can be reliably expressed, and it is possible to provide a decorative sheet that is highly productive and has excellent unevenness.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a decorative sheet of the present invention.

FIG. 2 is a vertical sectional front view showing another embodiment.

FIG. 3 is a vertical sectional front view showing a conventional example.

[Explanation of symbols]

 A: A decorative sheet excellent in unevenness expression a: Sheet body b: Uneven portion 1: Backing layer 2: Emulsion surface layer 4: Convex portion 4a: Edge

Claims (1)

[Scope of utility model registration request] 1. A decorative sheet having a foamed or non-foamed concavo-convex pattern formed by screen printing on the upper surface of a sheet main body, wherein the wetting index is 34 to 52 dy on the upper surface of a desired backing layer.
A decorative sheet excellent in unevenness expression, characterized in that the sheet body is constituted by providing an emulsion-based surface layer adjusted to n / cm.