Decorating material

Abstract

There is provided a decorative material which hardly undergoes deterioration of a substrate even when irradiated with an electron beam, and is excellent in surface properties such as stain resistance, abrasion resistance and marring resistance. The decorative material of the present invention includes a substrate, and a pattern layer and / or a colored layer, and a surface protective layer which are successively laminated on the substrate, wherein the surface protective layer is obtained by crosslinking and curing an electron beam-curable resin composition, and a rate of reduction in a folding endurance of a material obtained by applying the electron beam-curable resin composition onto the substrate and then irradiating an electron beam to the electron beam-curable resin composition, relative to a folding endurance of the substrate before applying the electron beam-curable resin composition thereonto is 70% or lower as measured in the CD direction (lateral direction) of the substrate.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This is a divisional of application Ser. No. 11 / 337,069 filed Jan. 23, 2006, which claims priority from Japanese Patent Application No. 2005-015414 filed Jan. 24, 2005; the above noted prior applications are all hereby incorporated by reference.FIELD OF INVENTION[0002]The present invention relates to decorative materials having a surface protective layer obtained by crosslinking and curing an electron beam-curable resin composition which hardly suffer from deterioration of a substrate due to exposure to electron beam and are excellent in surface properties such as stain resistance, abrasion resistance and marring resistance.BACKGROUND OF INVENTION[0003]Decorative materials used in the applications including building interior materials such as walls, fittings for buildings such as doors, surface materials for furniture, etc., have been usually required to exhibit good surface properties such as abrasion resistance and stain resistance. Hit...

AI Technical Summary

Benefits of technology

The decorative material exhibits improved processability and resistance to breakage, even in complex shapes and low-temperature environments, without substrate deterioration, thus enhancing its mechanical stability and surface properties.

Problems solved by technology

However, when irradiating the ionizing radiation for crosslinking the surface resin layer, the conventional decorative materials, for example, those using a substrate made of papers, tend to suffer from cutting or breaking of cellulose molecules of pulps in the paper substrate to thereby generate a carboxyl group or a carbonyl group at a cut or broken end of the molecules.

As a result, the paper substrate tends to be deteriorated in strength, resulting in deteriorated processability of the decorative material.

Whereas, a plastic substrate also tends to suffer from cutting or breaking of polymer molecular chains upon irradiation of the ionizing radiation, resulting in deterioration in strength thereof.

For these reasons, when the decorative sheet is laminated under pressure on the substrate as an adherend such as plywood through an adhesive, the decorative sheet tends to undergo increased tension, resulting in occurrence of split therein due to mechanical vibration, etc.

In particular, when the decorative sheet is laminated on curved portions of the adherend substrate or corner edge portions of such an adherend substrate having a polyhedral column shape by a wrapping process, the decorative sheet tends to suffer from concentrated local stress, resulting in breakage of the decorative sheet.

However, the above conventional method requires formation of the high-modulus resin layer, resulting in various limitations to production of the decorative materials.

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