Flexible base web for a construction covering

Details Flexible base web for a construction covering Flexible base web for a construction covering

1993-02-09

1995-10-17

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

28107, 28112, 428285, 428286, 428287, 428290, 428300, B32B 526, B32B 528, B32B 3108, D04H 146, D04H 148

Patent

active

054589606

ABSTRACT:
Flexible base web of a construction covering comprises a main layer extending at least over the greatest part of the thickness of the web and is constituted of a non-woven mineral fiber mat containing predominantly discontinuous mineral fibers. Said mat contains further blend fibers. The mat is manufactured using a dry method by means of an air stream whereby said blend fibers have become blended inside the mat during the dry method forming of the mat. The portion of said blend fibers is greater in the proximity of one of the surfaces of the mat than in the middle due to subsequent needling of the mat.

REFERENCES:
patent: 3956783 (1976-05-01), Stoller
patent: 3994759 (1976-11-01), Stoller
patent: 4042655 (1977-08-01), Platt et al.
patent: 4237180 (1980-12-01), Jaskowski
patent: 4342813 (1982-08-01), Erickson
patent: 4363682 (1982-12-01), Thiebault
patent: 4381330 (1983-04-01), Gotomyo
patent: 4416936 (1983-11-01), Erickson
patent: 4522876 (1985-06-01), Hiers
patent: 4568581 (1986-02-01), Peoples
patent: 4582750 (1986-04-01), Lou et al.
patent: 5014396 (1991-05-01), Nieminen

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