Web widening apparatus

Details Web widening apparatus Web widening apparatus

1997-08-25

1998-08-11

Vanatta, Amy B.

Textiles: cloth finishing

Expanding device for textile webs

Spreader

26 75, 26 97, 26100, 26101, 26105, D06C 306

Patent

active

057910308

ABSTRACT:
A relatively inexpensive web widening apparatus which is suitable for the manufacture of a widened web having a large width and a lightweight web while maintaining a high widening ratio and the uniformity of the web and can be operated with ease at a high efficiency comprises a widening tool in contact with the web, having first and second groups of widening plates arranged in a width direction of the web to face each other, at least one pair of cross guiders which can nip both side end portions of the web, and guide means for moving the widening plates of the first and second groups in such a manner that the interval between the widening plates expands gradually as they rotate and then narrows gradually.

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patent: 4007865 (1977-02-01), Crandall
patent: 4646403 (1987-03-01), Nasu

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