Apparatus and process for forming a laid fibrous web

Details Apparatus and process for forming a laid fibrous web Apparatus and process for forming a laid fibrous web

D - Textiles, Paper

01

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19/3, 154/75

D01H 5/00 (2006.01) A61F 13/15 (2006.01) B27N 3/14 (2006.01) D21F 9/00 (2006.01) D21F 11/00 (2006.01)

Patent

CA 1290126

ABSTRACT OF THE DISCLOSURE Apparatus and process for forming a laid fibrous article includes a foraminous forming surface for depositing thereon of fibers under the influence of a pressure differential imposed on the surface, wherein the improvement comprises the provision of a concavely contoured portion of the forming surface to yield a non-stepwise gradation in basis weight of the laid fibrous article. The concavely contoured surface portion is bounded by walls defining angles of from about 45° to 68°, whereby the laid fibrous article is readily removable from the forming surface, which may comprise the cylindrical surface of a rotating drum.

524933

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