Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1990-03-27
1992-01-28
Fisher, Richard V.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162191, 241 20, 241 24, 209 3, 209 10, 209173, D21B 108
Patent
active
050841351
ABSTRACT:
A method for reclaiming plastic and cellulosic fiber from plastic coated waste. The method includes the steps of introducing previously hydropulped plastic coated waste into a size reduction unit to reduce the plastic coated waste to a maximum dimension of about 1-4 inches. The plastic coated waste is then subject to flotation with agitation to separate the plastic from the cellulosic fiber. The cellulosic fiber is then screened, dried, and baled. The plastic is further reduced to a maximum dimension of about 1/2 inches and dewatered. The dewatered plastic is dried to a moisture content of less than 10% and rolled into plastic pellets. This method produces plastic pellets comprising from about 5 to about 10 weight percent cellulosic fiber and less than about 10 weight percent water from hydropulper plastic coating waste.
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Felton, A. J., "The Process and Economics of Polymer-Coated Wood Fiber Recovery", Tappi, May 1975, vol. 58, No. 5, pp. 71-73.
Brooks Joe G.
Goforth Billy D.
Goforth Charles L.
Advanced Environmental Recycling Technologies, Inc.
Burns Todd J.
Fisher Richard V.
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