Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1995-05-18
1999-02-02
Chin, Peter
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 4, D21C 502
Patent
active
058659471
ABSTRACT:
Recycling of mixed wastepaper, including plastic coated paper and printed paper, is accomplished by repulping the wastepaper mixture to disperse paper fibers, ink and plastic components into a pulp medium. Contact with a deinking chemical causes attraction between the ink components to form larger ink particles. The ink is adsorped onto the plastic components to form ink/plastic clusters which are removed to produce a substantially ink and plastic free pulp medium. Recycled paper products with improved strength comprising paper fibers from pulp medium produced in accordance with the method of the invention are also provided.
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Sansink PX-101; Data Sheet, PPG Industries, Inc., Pittsburg, PA.
Sansink PM-201; Data Sheet, PPG Industries, Inc. Pittsburg, PA.
Markham Larry D.
Srivatsa Narendra R.
Chin Peter
International Paper Company
Nguyen Dean T.
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