Patent ID: 7578903
Filing Date: 2009-08-25
Classification: D21H,Y10T

Abstract:
1. A colored sanitary tissue paper comprising: a dye being added to a pulp raw material, wherein: a color difference between before and after dyeing is 15 to 40 in D value of Hunter's color difference formula defined in JIS Z 8730; D=(ΔL a softening agent and a paper strength agent as well as a dye are added to the pulp raw material in the quantity per one ton of paper stuff, 0.1-15 kg/t of the softening agent, 0.1-25 kg/t of the paper strength agent and 0.05-15 kg/t of the dye; the colored sanitary tissue paper is an embossed colored sanitary tissue paper with convex parts between embosses relatively formed by scattered embosses; an embossing-pressure imparted area makes up 5 to 20% of the total area; and a and b are area chromaticness indexes and L is a lightness index.