Newspaper for offset printing

Details Newspaper for offset printing Newspaper for offset printing

B - Operations, Transporting

41

F

B41F 23/00 (2006.01) B41M 5/52 (2006.01) D21H 17/28 (2006.01) D21H 21/16 (2006.01) B41M 1/06 (2006.01)

Patent

CA 2406142

A surface-treatment agent containing at least one type of processed starch selected from a) to c) as listed below is applied to a base paper of a newspaper so that a product of a B- type viscosity of the surface-treatment agent, measured under conditions of 10 % concentration at 50°C (rotor No. 1 at 60 rpm), and an application amount of the surface- treatment agent (both sides) is within a range of 2 to 15 cps.g/m2; a) Etherified starch, which is etherified by the compound defined in the general formula (1) given below: (AO)n H (1) wherein A represents an ethylene group or propylene group, while n represents an integer of 1 to 15, b) Carboxylic acid esterified starch, which is esterified by monocarboxylic acid or dicarboxylic acid containing a linear, branched or cyclic alkyl group or alkenyl group having carbon atoms of 4 to 18, and c) Aldehyde starch.

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