Recovery of cellulosic fibres from foil laminated materials

Details Recovery of cellulosic fibres from foil laminated materials Recovery of cellulosic fibres from foil laminated materials

1978-07-10

1979-09-18

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 5, 162 7, 162 8, 162 55, D21B 112, D21C 502, D21B 136

Patent

active

041681991

ABSTRACT:
In the recovery of cellulosic fibre of papermaking quality from foil laminated papers and boards, the laminate is heated and pressurized in the presence of an aqueous liquor, subjected to rapid discharge to a lower pressure environment under reduced pressure and optionally subjected to mechanical agitation. This treatment provides a product stream which can be separated into cellulosic fibre suitable for the further manufacture of fibrous cellulosic articles and a metallic foil suitable for subsequent manufacture of metallic articles.

REFERENCES:
patent: 3884750 (1975-05-01), Iannazzi
patent: 3925150 (1975-12-01), Marsh

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