Multi-ply paper and paperboard having a wet-laid ply and a dry-l

Details Multi-ply paper and paperboard having a wet-laid ply and a dry-l Multi-ply paper and paperboard having a wet-laid ply and a dry-l

1973-08-21

1976-05-04

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Including solid non-waterlaid preform

162132, 162201, 162303, 162381, 264121, D21H 102, D21H 106

Patent

active

039545547

ABSTRACT:
A method and apparatus for making a multi-ply paper sheet wherein a first web is formed by wet-laying fibres and a second web is formed by dry-laying fibres, the two webs being combined to form a multi-ply sheet and wherein the dry-laid web is produced by depositing dry fibres on a supporting band and consolidating the web by hot moist pressing before transferring to the first wet-laid web.

REFERENCES:
patent: 1538788 (1925-05-01), Fish
patent: 2698271 (1954-12-01), Clark
patent: 2751962 (1956-06-01), Drummond
patent: 2881072 (1959-04-01), Clark
patent: 2913365 (1959-11-01), Osborne et al.
patent: 2961361 (1960-11-01), Dennis

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