Title:
PRODUCTION OF MEDIUM GRADE COAT PAPER FOR GRAPHIC WHEEL
Document Type and Number:
Japanese Patent JPS55152895
Kind Code:
A
Abstract:
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 base paper, the fiber content of which comprises 10 to 100 parts, by weight, high-yield pulp(s) having a 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 1.5 to 2.5 m2/g in a proportion of 5 to (95S-137.5)% by weight ("S" represents a specific surface area (m2/g) of natural ground calcium carbonate.), and adhesive of either alkali-sensitive synthetic resin emulsion or a mixture of 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 2.5 to 5 m2/g in a proportion of 5 to 100% by weight, and adhesive of either alkali-sensitive synthetic resin emulsion or a mixture of alkali-nonsensitive synthetic resin emulsion and viscosity increasing agent(s).
Inventors:
SUZUKI KAZUHIKO
FUJIKI YASUHIRO
KITABORI TOUJIROU
TAKADA AKIRA
FUJIKI YASUHIRO
KITABORI TOUJIROU
TAKADA AKIRA
Application Number:
JP5832779A
Publication Date:
November 28, 1980
Filing Date:
May 11, 1979
Export Citation:
Assignee:
KANZAKI PAPER MFG CO LTD
International Classes:
D21H19/38; D21H11/10; D21H19/58; D21H19/84; (IPC1-7): D21H1/22