Kanzaki Paper Manufacturing Co., Ltd.

Toray Industries, Inc.

Tojiro Kitahori

Seigoro Fujita

The surface of a paper material is treated with an aqueous composition comprising a water soluble polymer and a polymer emulsion, said paper material being formed of a fibrous material, at least a part of which is composed of hydrophilic polyolefin fibers. The obtained product has a strong pick resistance and an improved ink receptivity adapted for offset printing.

Method for the production of a synthetic fiber paper having an improved

A coated synthetic paper adapted for offset printing is produced from a base paper sheet comprising fibrous material, at least 5% by weight of which is formed of polyolefinic pulp fibrils which are formed from a polyolefinic polymer and a hydrophilic polymer, said polyolefinic pulp fibrils having a specific surface area of at least 0.7 square meter/g. A microporous and discontinuous coating layer is formed on at least one of the surfaces of the base paper sheet using a coating composition having an adhesive component and a pigment component, at least 5% by weight of said pigment component being an organic polymer pigment in the form of finely divided particles.

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Kawanishi, Japan

Tojiro Kitahori