Web forming apparatus employing spreading section

Details Web forming apparatus employing spreading section Web forming apparatus employing spreading section

1978-08-02

1979-12-04

Mackey, Robert R.

Textiles: fiber preparation

Assembling

Web forming

19307, 425 821, 425 831, D04H 100

Patent

active

041764277

ABSTRACT:
An apparatus for increasing the width, or cross-machine-direction dimension of a fluid-entrained (e.g. air-entrained) stream of fibers prior to depositing the fibers on a foraminous forming surface to form a fibrous web structure. A rotatable spreading roll intercepts the open downstream end of a conveying duct through which the fluid-entrained stream of fibers is directed, and this roll includes a plurality of axially spaced disks providing flow-directing channels between them. The rotational axis of the spreading roll is oriented obliquely to the duct so that the lateral dimension of flow-directing channels between laterally spaced-apart duct sidewalls is greater than the width of the duct at its open downstream end, as measured generally normal to the direction of fiber flow through the duct.

REFERENCES:
patent: 2023273 (1935-12-01), Lequillon
patent: 3728872 (1973-04-01), Thore
patent: 3753271 (1973-08-01), McBean
patent: 3961397 (1976-06-01), Neuenschwander
patent: 4065832 (1978-01-01), Neuenschwander

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