Apparatus for expanding the width of preformed fibrous webs

Details Apparatus for expanding the width of preformed fibrous webs Apparatus for expanding the width of preformed fibrous webs

1978-05-22

1980-09-02

Mackey, Robert

Textiles: manufacturing

Textile product fabrication or treatment

Fiber entangling and interlocking

191611, D04H 170

Patent

active

042199115

ABSTRACT:
This invention is directed to apparatus for expanding the width of preformed fibrous webs. Fibrous webs having fibers oriented in their lengthwise direction can be widened by this apparatus and this orientation is still maintained in the widened web. The apparatus functions by feeding the web to a blade edge lying at an angle to the lengthwise direction, abruptly changing the direction of travel of the web at the edge from the lengthwise direction to a second direction, and turning the web fibers in the second direction while expanding the width of the web. The profile of fibrous webs, i.e., the thickness, uniformity, weight and fiber density, across its width can be changed and controlled according to the apparatus disclosed.

REFERENCES:
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patent: 1560670 (1925-11-01), De Vries
patent: 2305997 (1942-12-01), Shields
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patent: 3808639 (1974-05-01), Tautraisas
patent: 3953909 (1976-05-01), Yazawa et al.

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