Lonseal Corporation

Yuichi Akiba

Nobuo Miura

Mitsuru Sugiyama

Makoto Takezawa

Akira Kaneko

Toru Shoji

Mituo Sato

In the production of a decorative sheet, a synthetic resin paste is first applied onto the upper surface of a substrate sheet to form an undercoat layer. Then, one or more pastes, each being of the same material and having approximately the same viscosity as the paste of the undercoat layer, are laterally sprayed so as to drop onto the undercoat layer. The result is a smoothing phenomenon, with the pattern layer cooperating with the undercoat layer to form a smooth patterned surface. Finally, the pattern layer is heated and jelled.

Process for producing decorative sheet

A method for making a vinyl chloride resin sheet having a raised pattern thereon. The method comprises the steps of providing an open-celled vinyl chloride resin sheet and printing a portion of the sheet with a composition comprising a cross-linkable compound in accordance with the pattern to be formed. The printed sheet is then dried and subsequently heated to a temperature higher than its softening temperature whereby the open-celled unprinted portion of the sheet is depressed and whereby the printed pattern remains open-celled and stands in relief with respect to the depressed portion.

Open cell foam resin sheet having a relief pattern thereon

Method for making a vinyl chloride resin sheet and sheet formed by said

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Tokyo, Japan

Yuichi Akiba