Consolidation of dry formed webs

Details Consolidation of dry formed webs Consolidation of dry formed webs

1975-06-20

1977-06-07

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Plural, intermittent pressure applying

D04H 164

Patent

active

040284573

ABSTRACT:
A method of forming a paper-like sheet from a dry formed web by pre-bonding the web thereby strengthening it sufficiently that it may traverse a conventional size press but without unduly inhibiting the ability of the web to be penetrated by a binder in a liquid carrier, applying said binder to the pre-bonded web, distributing said binder in said web in a size press at a pressure of 20-150 lbs/linear inch, a temperature of 15.degree. - 80.degree. C and a web speed of at least 50 ft/minute and drying the web to provide a bonded sheet.

REFERENCES:
patent: 2872337 (1959-02-01), Heritage et al.
patent: 2983627 (1961-05-01), Williams
patent: 3230287 (1966-01-01), Caron et al.
patent: 3773587 (1973-11-01), Flewwelling

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