Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Plural – intermittent pressure applying
Patent
1976-07-26
1979-07-03
White, Robert F.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Plural, intermittent pressure applying
264128, D04H 164
Patent
active
041600045
ABSTRACT:
A method for producing a self-sustaining sheet of essentially cellulosic fibrous material with improved strength wherein a dry-laid web is moistened and then consolidated by passage along a heated consolidating surface wherein the web is held against this surface by one side of a supporting band, against the other side of which at least two spaced apart pressure rolls exert a pressure acting through the supporting band against the web, which pressure is preferably between 150 and 500 pounds per linear inch. The supporting band thereby maintains the web against the heated consolidating roll between said pair of pressure nips.
REFERENCES:
patent: 2489079 (1949-11-01), Clark et al.
patent: 3431334 (1969-04-01), Williams et al.
patent: 3764451 (1973-10-01), Dunning
patent: 3776807 (1973-12-01), Dunning et al.
patent: 3876745 (1975-04-01), Fleissner
Attwood Brian W.
Christensen John M.
Curry Harold G.
Kroyer Karl K. K.
White Derek G. W.
Hall James R.
Karl Kroyer St. Anne's Limited
White Robert F.
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