Mitsubishi Rayon Company, Limited

Isao Kamada

Yoshio Nakai

Tetsuji Kato

Haruyoshi Kitahara

Katsumi Tamai

Tadaomi Ueno

Yasuhiko Iwaoka

Hiroshi Kichiji

Kiyonori Okajima

A synthetic resin plate having at least two different colors is prepared by a process having the steps of supplying at least two polymerizable liquid materials differing in the color from at least two inlets, passing them through at least two groups of flow paths alternately arranged, extruding and injecting the polymerizable liquid materials into a polymerization apparatus, polymerizing the liquid materials, and withdrawing a plate-shaped product having a striped pattern extending from the surface to the interior or a plate-shaped product having said striped pattern in which the boundary area between the adjacent stripe lines of different colors is gradated.

Apparatus for preparing a synthetic resin plate of different colors

A multi-colored synthetic resin sheet having an upper surface, a lower surface and a uniformly colored longitudinal cross-section which has at least two longitudinally adjacent different colors, with the boundary portion between the colors being in a gradated state on the upper surface and throughout a transversal section of sheet, is formed by adjacently feeding at least two differently colored polymerizable liquids into a polymerizing apparatus and polymerizing and hardening the materials.

Multi-colored synthetic resin sheet

A process for continuously casting a sheet and the like, comprising, running two feed belts positioned in face-to-face relationship to each other, opposed belt surfaces of said belts being in the same direction without relatively displacement; running at least two gaskets together with the two belt surfaces at the both edges thereof; maintaining the opposed surfaces in any position rigid in the direction perpendicular to the running one and flexible in the running direction; supplying material between the belts from one side thereof; supporting the opposed belt surfaces by pressure of the material and retaining a gap in desired thicknesses between the belt surfaces in desired positions thereof; treating continuously the material between the belt surfaces and delivering treated sheet from the other side of the belts.

Apparatus for continuously casting a sheet and the like

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Otake, Japan

Isao Kamada