Method for removing stickies from secondary fibers using supercr

Details Method for removing stickies from secondary fibers using supercr Method for removing stickies from secondary fibers using supercr

1990-10-12

1991-04-23

Hastings, Karen M.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 63, 162DIG4, D21C 908, D21C 502

Patent

active

050097466

ABSTRACT:
A process for removing sticky contaminants ("stickies") from cellulose-containing fibers such as waste paper is provided. The process comprises contacting the fibers with supercritical or near supercritical carbon dioxide for a period of time sufficient to extract a substantial portion of the stickies without substantially damaging the fibers.

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