Web forming apparatus and method

Details Web forming apparatus and method Web forming apparatus and method

D - Textiles, Paper

01

G

19/3

D01G 25/00 (2006.01) D01G 15/20 (2006.01) D04H 1/72 (2006.01)

Patent

CA 1042173

ABSTRACT OF THE DISCLOSURE Web forming apparatus of this invention includes a fiberizing roll for separating fibers from a feed mat and entraining them in a gaseous medium, a foraminous forming surface through which the gaseous medium passes and upon which the fibers are condensed to form a fibrous web and a formation duct having an upstream end adjacent the fiberizing roll and a downstream end adjacent the forming surface, whereby the formation duct defines a flow path for the gaseous suspension of fibers from the fiberizing roll to the forming surface; the improvement including passageways at opposite sides of the apparatus adjacent the up- stream end of the formation duct for communicating the duct with an atmosphere having a lower pressure than that within the duct for removing air to eliminate the adverse effect of vortices which are created by rotation of the fiberizing roll. A method of forming a fibrous web by employing the above described apparatus also forms a part of this invention.

249923

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