Web forming apparatus and method

Details Web forming apparatus and method Web forming apparatus and method

1975-04-10

1976-09-28

Newton, Dorsey

Textiles: fiber preparation

Assembling

Formed silvers

D01G 2500

Patent

active

039823024

ABSTRACT:
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 upstream 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 abovedescribed apparatus also forms a part of this invention.

REFERENCES:
patent: 1284922 (1918-12-01), O'Connell
patent: 2086592 (1937-07-01), Williams
patent: 3797074 (1974-03-01), Zafiroglu

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