Integrated pulping process of waste paper yielding tissue-grade

Details Integrated pulping process of waste paper yielding tissue-grade Integrated pulping process of waste paper yielding tissue-grade

1997-02-04

1998-05-26

Hastings, Karen M.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 8, 162 21, D21C 502

Patent

active

057559260

ABSTRACT:
This invention provides an integrated system for recovering fibers from mixed grades of waste paper and simultaneously cleaning (deinking) waste fibers. The system comprises a mild alkaline pulping process with oxygen and hydrogen peroxide followed by rapid decompression of fibers and then by hot washing.

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