D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
117/199
D21H 19/84 (2006.01) B32B 27/10 (2006.01) D21H 11/10 (2006.01) D21H 19/58 (2006.01)
Patent
CA 1147619
ABSTRACT OF THE DISCLOSURE A method of producing medium-grade coated paper for rotogravure printing, which paper, when printed, has fewer missing gravure dots and reproduction of gravure dots is improved. The method comprises applying the following coating composition (A) or (B) to either surface or both surfaces of a base paper, the fiber content of which comprises 10 to 100 parts, by weight, high-yield pulp(s) having 42-mesh fiber fraction content of below 30%, and 0 to 90 parts, by weight, chemical pulp(s) . The coating composition (A) comprises pigments containing natural ground calcium carbonate with a specific surface area of from 1.5 to 2.5 m2/g in a proportion of from 5 to (95S. 137.5)% by weight ( S represents the specific surface area (m2/g) of natural ground calcium carbonate.), and an adhesive of either an alkali-sensitive synthetic resin emulsion or a mixture of an alkali-nonsensitive synthetic resin emulsion and viscosity increasing agent(s). the coating composition (B) comprises pigments containing natural ground calcium carbonate with a specific surface area of from 2.5 to 4 m2/g in a pro- portion offrom 5 to 100% by weight, and an adhesive of either an a1kali-sensitiv synthetic resin emulsion or a mixture of an a1kali-nonsensitive synthetic resin emulsion and viscosity increasing agent(s).
350606
Fujiki Yasuhiro
Kitahori Tojiro
Suzuki Kazuhiko
Takada Akira
Gowling Lafleur Henderson Llp
Kanzaki Paper Mfg. Co. Ltd.
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