Stock material or miscellaneous articles – Nonparticulate element embedded or inlaid in substrate and...
Patent
1988-03-09
1990-03-27
Thomas, Alexander S.
Stock material or miscellaneous articles
Nonparticulate element embedded or inlaid in substrate and...
428535, 4285371, B32B 314
Patent
active
049119699
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to wood-based decorative boards suitable for use as wooden fittings such as tables, counters, furniture, and acoustic apparatus cases, wood-based construction materials such as floor materials and wall materials, and surface materials such as vehicle fittings as well as to a method of production thereof.
BACKGROUND ART
Hitherto, known surface materials used as surface plates of such as tables include timber alone and those in which thin wooden sheets are bonded to plywood base plates. Surface materials of this type have advantages in that they not only have a beautiful appearance of lumber but also are soft-touching. However, they have disadvantages in that they lack abrasion resistance, water resistance, and stain resistance and are unsatisfactory in terms of durability.
In addition, timber itself, which has beautiful figure patterns and can be used as surface materials, is getting depleted as resources and is becoming difficult to obtain.
For these reasons, it has been proposed to use as a surface material one which is obtained by mixing a multiplicity of small timber pieces in a solution of a transparent hardenable resin such as unsaturated polyester resin, molding the mixture into a plate-like shape and allowing it to harden.
With such surface materials, however, there are many cases where the side surfaces of the small timber pieces and the surface of the decorative board are not parallel with each other, since the materials are obtained by mixing and hardening a resin solution and small timber pieces, so that there has been felt a dissatisfaction that the surface patterns of the small timber pieces do not efficiently appear in the surface of the decorative board, and the beauty of the small timber pieces does not appear sufficiently.
DISCLOSURE OF INVENTION
Accordingly, an object of the present invention is to provide beautiful decorative boards in which the figure patterns of small timber pieces appear in the surfaces thereof effectively without waste and the figure patterns are emphasized as well as a method of production thereof.
In consideration of this object, the present invention provides a decorative board comprising a colored, opaque resin layer with a multiplicity of small timber pieces dispersed therein, wherein the small timber pieces in the colored, opaque resin layer are exposed on the surface of the layer, and the layer is flat. By adopting this structure, the side surfaces of the small timber pieces exposed on the surface of the small timber piece-dispersed, colored, opaque resin layer are arranged and disposed parallel with the surface of the decorative board, so that the figure patterns of the small timber pieces can appear effectively on the surface of the decorative board, and the decorative board can be made beautiful with their figure patterns emphasized.
In accordance with claims 2 and 3, a transparent resin layer is formed on the colored, opaque resin layer with a multiplicity of small pieces of timber are dispersed therein. This transparent resin layer protects the small timber piece-dispersed, colored, opaque resin layer, which prevents the absorption of moisture and water by the small timber pieces, as well as staining, abrasion and the like of the surface of the small timber piece-dispersed, colored, opaque layer.
In accordance with claim 4, a transparent resin layer having glass fibers mixed therein is provided on a colored, opaque resin layer with the small timber pieces dispersed therein. By virtue of the presence of this transparent resin layer in which the glass fibers are mixed, movement caused as by the absorption and desorption of moisture by the small pieces of timber in the small timber piece-dispersed, colored, opaque resin layer and movement caused as by hardening and shrinkage of the colored, opaque resin layer and temperature changes do not appear on the surface of the transparent resin layer, the surface becomes smooth, and its beauty is enhanced.
According to claims 9 to 11, there are provided methods of
REFERENCES:
patent: 1900830 (1933-03-01), Mahlstedt et al.
patent: 4122236 (1978-10-01), Holman
Iwata Ritsuo
Nagashima Hironao
Ogata Tomohide
Thomas Alexander S.
Yamaha Corporation
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