Method and apparatus for layering a fibrous web

Details Method and apparatus for layering a fibrous web Method and apparatus for layering a fibrous web

1996-05-23

1997-09-23

Calvert, John J.

Textiles: fiber preparation

Assembling

Formed web

19296, 271 94, B65H 3500, B65H 5116, B65H 6100

Patent

active

056691092

ABSTRACT:
A method of layering a fibrous web in overlapping layers on a draw-off conveyor along a predetermined layering distance comprises the steps of sub-dividing the fibrous web into layer sections corresponding in length to the layering distance, sequentially aspirating the layer sections by suction force against the force of gravity onto a lower strand of a continuously revolving layering conveyor extending over the layering distance and conveying the layers in a conveying direction, subsequently detaching the layer sections from the lower layering conveyor strand conveying the layer sections by interrupting the suction force, and depositing the detached layer sections only in a layering direction of the draw-off conveyor.

REFERENCES:
patent: 3405934 (1968-10-01), Elsas
patent: 3431139 (1969-03-01), Stroszynski
patent: 4481694 (1984-11-01), Dilo
patent: 5064341 (1991-11-01), Pippin
patent: 5090676 (1992-02-01), Matsuno et al.
patent: 5429347 (1995-07-01), Leonard

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