Colored sanitary tissue paper and production method thereof

Paper making and fiber liberation – Processes and products – Non-fiber additive

Reexamination Certificate

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Details

C162S109000, C162S117000, C162S158000, C162S183000, C428S156000, C428S488110, C008S554000, C008S619000

Reexamination Certificate

active

07578903

ABSTRACT:
The invention is directed to obtain a colored sanitary tissue paper giving a bright feeling in spite of modest color. The invention provides a colored sanitary tissue paper with a color difference between before and after dyeing of 15 or more in D value of Hunter's color difference formula defined in JIS Z 8730; D=(ΔL2+Δa2+Δb2)1/2.

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