Production of fibrous sheet material

Details Production of fibrous sheet material Production of fibrous sheet material

1976-12-16

1978-06-27

Robinson, Ellis

Stock material or miscellaneous articles

Structurally defined web or sheet

Weight per unit area specified

229 35R, 229 6R, 264112, 264120, 264128, 428220, 428 35, B32B 2900, B65D 500

Patent

active

040976408

ABSTRACT:
Foldable boxboard made by dry-laying cellulosic fibers and 1-10% starch. The boxboard has a weight of at least 210 g.s.m., a stiffness in the machine direction of at least 5.8 Kenley units, and a ratio of stiffness in the machine direction and in the cross-machine direction of substantially 1:1.

REFERENCES:
patent: 1053272 (1913-02-01), Brady
patent: 1987225 (1935-01-01), Bergstein
patent: 2036987 (1936-04-01), Watson
patent: 2556568 (1951-06-01), Aikman
patent: 3311285 (1967-03-01), Korr
patent: 3511430 (1968-05-01), Chuber
patent: 3692622 (1972-09-01), Dunning
patent: 3764451 (1973-10-01), Dunning
patent: 3776807 (1973-12-01), Dunning

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