JPH0576766U - A decorative sheet that excels in unevenness - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a decorative sheet which is capable of obtaining a sufficient protruding height and a sharp edge with the same basis weight, and in which a sharp and clear uneven pattern is surely expressed, which is excellent in uneven expression. .. [Structure] In a decorative sheet A having a foamed or non-foamed uneven pattern b formed by screen printing on a top surface a'of a sheet body a, the sheet body a is constructed by adjusting the wetting index to 34 to 70 dyn / cm. ..

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]

 As a decorative sheet of this type conventionally 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. 3, for example, a sheet made of paper or the like. On the surface of the main body (lining layer) 100, a foaming ink made of polyvinyl chloride resin containing a foaming agent is directly screen-printed into a predetermined pattern to form an uneven pattern 200 of a desired thickness by the foam or the like. It was provided.

[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 the resin layer is on the paper, the ink inevitably wets the resin layer, 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 of the adjacent convex portion 300 300 is formed. Since the 300b and 300b sometimes contacted each other, the unevenness of the unevenness was not clear, and it was difficult to express a sharp and clear unevenness pattern. 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 a decorative sheet having a foamed or non-foamed uneven pattern formed by screen printing on the upper surface of the sheet body, and has a wetting index of 34 to 70 dyn / cm. The contact angle of the ink with respect to the sheet body is made close to 90 ° so that the edge of the ink is more vertical and sharper than the sheet.

Further, the sheet body is constituted by providing a surface layer whose wetting index is adjusted to 34 to 70 dyn / cm on the upper surface of a desired backing layer.

[0008]

[Action]

 Since the technical means adjusts the contact angle of the ink on the surface of the sheet body, which is the printing surface, the convex and concave portions formed by printing on the sheet body are not sagged from above the sheet body. It will be launched rapidly.

When a sheet body is formed by providing a surface layer whose wetting index is adjusted to 34 to 70 dyn / cm on the upper surface of a desired backing layer to form a sheet main body, a convex and concave pattern printed and provided on the surface layer is provided. The part will be rapidly raised from the surface layer without sagging.

[0010]

【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 body a is made of, for example, PP or PVC film whose wetting index is adjusted to 34 to 70 dyn / cm, and the wetting index is adjusted by corona treatment or by adding a surfactant in the treatment agent. It is possible by combining resin, etc. The thickness and material of the seat body a are not limited in any way, and each object such as a building (eg wallpaper), furniture (surface decoration material), vehicle (eg interior material), etc. It can be changed as appropriate. The determination of the wetting index (dyn / cm) of the sheet body a was performed using a reagent (JIS-K6768) that has been commonly used in the past, and 57dyn / cm or more was adjusted based on the same purpose. Performed using reagents.

The concavo-convex pattern b is formed on the upper surface a ′ of the sheet body a by a well-known foaming ink made of a foaming resin containing a foaming agent, for example, an emulsion polymerization PVC containing a desired foaming agent. After printing a predetermined pattern (concave-convex pattern) by using a rotary screen printing method, the concave part 3 and the convex part 4 are made of a foam formed by foaming the foamable ink by heating at a desired temperature. It consists of ... and. Although not shown, the uneven pattern b may be made of a non-foamed body made of a non-foaming ink (such as that made of the emulsion-polymerized PVC).

Therefore, the decorative sheet A configured as described above has the rotary screen with the same basis weight of the uneven pattern b made of foam on the upper surface a ′ of the sheet body a whose surface wettability is adjusted. Since the protrusions 4 ... Are sharply raised from the sheet body a as shown in FIG. 1 because they are printed, and the edges are not sharp, the edges 4a ... A sufficient protrusion height was obtained, and a sharp and clear uneven pattern b could be reliably expressed.

Next, in FIG. 2 (a), a sheet body a is a surface of a desired backing layer 1 made of paper, cloth, PVC film or the like, which has a wetting index adjusted to 34 to 70 dyn / cm on the upper surface 1 '. The surface layer 2 has a wetting index adjusted to 34 to 70 dyn / cm, for example, a solvent-based treatment agent such as acrylic, urethane, nylon, chlorinated PE, EVA, PVC or the like. Or a film of acrylic, urethane, nylon, chlorinated PE, EVA, PE, PP, PVC or the like, which is coated or laminated on the upper surface 1 ′ of the backing layer 1.

Furthermore, the designability may be improved by adding a gloss adjusting agent, a coloring agent, a decorating agent (mica powder), etc. to the above-mentioned treating agent.

The wetting index can also be adjusted by corona treatment, or by adding a surfactant to the treatment agent or combining a resin and the like.

Further, FIG. 2B shows a sheet main body a in the case where the backing layer 1 in which the vinyl chloride resin layer 1b is provided on the upper surface of the paper 1a or the like is used. That is, the surface layer 2 whose wetting index is adjusted to 34 to 70 dyn / cm is provided on the upper surface 1'of the backing layer 1 to form the sheet main body a, and the concave portions 3 ... A convex / concave pattern b composed of convex portions 4 is provided. This is a predetermined pattern (concave / concave pattern) formed by a rotary screen printing method using a resin or the like made by direct emulsion polymerization PVC on the vinyl chloride resin layer 1b. When a pattern is printed, it is of the same type and has a problem in that it has a good conformability and as a result the projections 4 are dented. However, by providing the surface layer 2 as described above, the surface wettability is adjusted and the above problems are resolved. To be done. The rest of the configuration, operation and the like are the same as those of the decorative sheet A shown in FIG. The backing layer 1 is not limited to two layers.

Here, an example of specific implementation (printing results when the wetting index is adjusted to various numerical values) is shown in the table. In addition, Table 1 uses a sheet body a in which a surfactant is kneaded in soft PVC, and Table 2 (a) shows that after a film such as PP is laminated on the upper surface of the paper 1a or the like, a corona is used. The sheet main body a provided with the surface layer 2 subjected to the treatment is used. (B) shows the PVC. A sheet body a provided with a surface layer 2 coated with a treatment agent composed of an acrylic emulsion and dried is used, and an emulsion polymerization PVC-based sheet is used on the upper surface a ′ (surface layer 2) of each sheet body a. This is the result of rotary screen printing of ink.

[0019]

[Table 1]

[0020]

[Table 2]

Of course, the above examples are merely examples, and may be, for example, PP + surfactant or PVC + corona treatment. Further, a surface active agent may be added to an acrylic or urethane surface treating agent to give a basis weight. When coated with 1 to 50 g / m ² , the results are the same as in Table 1, and for films of olefins, acrylics, urethanes, polyesters, etc., the same treatment can be performed by adding a surfactant to adjust the surface activity. It may be a resin blend or a copolymer.

[0022]

[Effect of the device]

 The present invention is a decorative sheet in which a foamed or non-foamed uneven pattern is provided by screen printing on the upper surface of the sheet body formed by adjusting the wetting index to 34 to 70 dyn / cm. The wettability of the surface is adjusted, and the convex portion of the uneven pattern printed and provided on the sheet body is rapidly raised from the sheet body without sagging. Therefore, the protrusions have the same basis weight to obtain a sufficient protrusion height, and sharp edges can be obtained, so that the uneven steps can be clearly seen. It is possible to reliably express sharp and clear unevenness patterns, and it is possible to provide a decorative sheet that is highly productive and has excellent unevenness.

When a sheet body is formed by providing a surface layer having a wettability index adjusted to 34 to 70 dyn / cm on the upper surface of a desired backing layer to form a sheet main body, a convex and concave pattern printed and provided on the surface layer is provided. Since the part is rapidly raised from the surface layer without sagging, the convex part has the same basis weight and a sufficient protruding height and a sharp edge as in the above. As a result, the uneven step becomes clear.

[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 an embodiment of the decorative sheet according to claim 2;

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

[Explanation of symbols]

 A: decorative sheet excellent in unevenness expression a: sheet body b: unevenness part 1: backing layer 2: surface layer 4: convex part 4a: edge

Claims (2)

[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 the sheet body, wherein the sheet body is formed by adjusting the surface wetting index to 34 to 70 dyn / cm. A decorative sheet that is excellent in unevenness expression. 2. A decorative sheet having a foamed or non-foamed concavo-convex pattern formed by screen printing on the upper surface of a sheet body, wherein the wetting index is 34 to 70 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 a surface layer adjusted to n / cm.