Method of forming a fibrous web using a variable transverse webb

Details Method of forming a fibrous web using a variable transverse webb Method of forming a fibrous web using a variable transverse webb

1989-01-17

1990-05-01

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264518, 264113, 264116, 425 811, D04H 172

Patent

active

049216597

ABSTRACT:
A web or structure is formed by feeding separate supplies of fibrous material into contact with two separate lickerins that are parallel to each other and rotated toward each other. The fibers from the two lickerins pass through a mixing zone and are accumulated on a moving conveying screen that is moved parallel to the axes of the lickerins. Segmented baffle plates may be inserted into the mixing zone to control the lateral or cross-sectional composition of a web formed by the fibers accumulated on the screen. A segmented feed may be used to advantageously deliver different fiber materials at different rates to each lickerin. Radially layered composite web structures having circular cross-sections may be formed with the same apparatus by forming the conveying screen into a U-shape and selectively controlling the air flow through the screen.

REFERENCES:
patent: 3512218 (1970-05-01), Langdon
patent: 3535187 (1970-10-01), Wood
patent: 3740797 (1973-06-01), Farrington
patent: 3768118 (1973-10-01), Ruffo et al.
patent: 3772739 (1973-11-01), Lovgren
patent: 3895089 (1975-07-01), Goyal
patent: 3914080 (1975-10-01), Kamp
patent: 4166090 (1979-08-01), Green et al.
patent: 4724114 (1988-02-01), McFarland et al.
patent: 4767586 (1988-08-01), Radwanski et al.

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