Decorative material and decorative sheet

Abstract

An object of the present invention is to realize a configuration of decorative sheet, particularly a decorative paper and the like, or a decorative material in which it is adhered, that is: a grain depression is not visible; excellent in scratch resistance, also in contamination resistance; and three-dimensional design can be expressed, at low cost.

For attaining the above-mentioned object, the present invention uses a delustering silica, whose surface is treated with a fatty acid based wax such as stearic acid, as a delustering silica in a decorative material 10 in which a luster adjusting resin layer 2, which is formed of a cross-linked cured material of an ionizing radiation curing resin composition containing a delustering silica, is provided on a base material 1. The luster adjusting resin layer may be formed with an even thickness. However, a convex-concave surface design can be expressed by forming the luster adjusting resin layer partially in a pattern. The luster adjusting resin layer is formed with an ionizing radiation curing resin composition, particularly with no solvent, by a gravure printing or gravure coating using a doctor blade and a gravure plate.

Description

TECHNICAL FIELD [0001] The present invention relates to: a decorative sheet wherein grain depression is not recognizable, excellent in scratch resistance and in contamination resistance, three-dimensional design can be expressed and a surface thereof can be delustered; and method for manufacturing the same. The present invention also relates to a decorative material whose surface strength such as abrasion resistance is imparted by an ionizing radiation curing resin layer, and also, whose surface is delustered by delustering silica. BACKGROUND ART [0002] Decorative sheets using paper and resin sheet, or decorative materials such as decorative material in the form of plate, in which the above-mentioned decorative sheet is adhered to an adhered base material, are used in various uses such as construction interior and exterior materials. These decorative sheets and decorative materials, in general, are often required to have surface strength such as scratch resistance and the like. For ...

AI Technical Summary

Benefits of technology

[0134] The viscosity and thixotropic property of the ink can be adjusted properly by: binder resin (cross-link curing resin) of the ink; inorganic fillers such as a fine powder silica as a thixotropic agent; inorganic fillers such as silica, alumina, kaolin, and calcium carbonate; organic fillers such as resin beads; use or not of a diluting solvent; their adding amounts; and the temperature at the time of ink printing (and until the ink is cured) It is also effective to add two types of fillers with different average particle diameter at the time of addition of the filler. Specifically: fine particle silica powder with an average particle diameter of nm order is used in combination with a delustering silica powder with an average particle diameter around 5 to 20 μm; or a filler with a smaller average particle diameter is used in combination with a filler with a larger average particle diameter. Also, paying attention to the particle size distribution other than the average particle diameter, proper flow ability may be obtained.

[0135] In plane view of FIG. 2, a plane view shape of one example of the convex patterns 2 is shown. The convex pattern, as shown in FIG. 2, is a pattern composed of a large number of winding lines. FIG. 2 shows the patterns (printed parts are black parts) on a printing plate for forming the convex patterns by printing, and is a magnified drawing of an area of 5.25 cm length by 3.5 cm width (quadruple).

[0136] The plane view shape of the convex pattern is not particularly limited and may be formed dependin

Problems solved by technology

The doctor streak occurs when a tip of the doctor blade is chipped off, a groove shaped damage (doctor damage) occurs across the tip, so that the ink of this part is not scraped off sufficiently, because the doctor blade is not worn evenly in its width direction.

However, particularly when the ink or coating liquid contain delustering agent such as delustering silica, the doctor streak is likely to occur.

However, a problem of grain depression is likely to occur.

Therefore, the coating process of the coating film layer or the overcoat layer is necessary in addition to the relief printing of the convex-concave pattern so that high cost in processing and high material cost are inevitable.

However, with such configuration, sufficient property cannot be obtained in applic

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