초록 ▼

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 pape

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).

대표청구항 ▼

Coated paper for rotogravure printing which comprises a paper base having a fiber content comprising 10 to 100 parts by weight of high-yield pulp(s), said high-yield pulp(s) having a 42-mesh fiber fraction content below 30% by weight, said paper base being coated on either or both surfaces with coat

Coated paper for rotogravure printing which comprises a paper base having a fiber content comprising 10 to 100 parts by weight of high-yield pulp(s), said high-yield pulp(s) having a 42-mesh fiber fraction content below 30% by weight, said paper base being coated on either or both surfaces with coating composition (A) or (B), said coating composition (A) comprising 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 (90S-137.5)% by weight of the total pigment content thereof, where “S”represents the specific surface area (m2/g) of natural ground calcium carbonate and principal adhesive of either alkali-sensitive synthetic resin emulsion or a mixture of viscosity increasing agent(s) and alkali-nonsensitive synthetic resin emulsion, said coating composition (B) comprising pigments containing natural ground calcium carbonate with a specific surface area of 2.5 to 5.0 m2/g in a proportion of 5 to 100% by weight of the total pigment content, and principal adhesive of either alkali-sensitive resin emulsion or a mixture of viscosity increasing agent(s) and alkali-nonsensitive synthetic resin emulsion.