Multi-ply fibrous sheets having a wet-laid ply and a dry-laid pl

Details Multi-ply fibrous sheets having a wet-laid ply and a dry-laid pl Multi-ply fibrous sheets having a wet-laid ply and a dry-laid pl

1976-06-15

1977-09-06

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Multi-layer waterlaid webs or sheets

162201, 162303, 264121, D21H 102, D21H 106

Patent

active

040466221

ABSTRACT:
A process and apparatus for forming a multi-ply sheet of cellulosic fibrous material. A dry-laid mat and a wet-laid web of cellulosic fibers are joined together and concurrently the dry-laid mat is consolidated by the concurrent application of heat, pressure and moisture, the moisture being derived from the wet-laid web.

REFERENCES:
patent: 2881072 (1959-04-01), Clark
patent: 2886484 (1959-05-01), French et al.
patent: 3816159 (1974-06-01), Newman
patent: 3825381 (1974-07-01), Dunning et al.
patent: 3905864 (1975-09-01), Curry et al.
patent: 3954554 (1976-05-01), Curry et al.

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