Zoned stretching of a web

Details Zoned stretching of a web Zoned stretching of a web

2006-05-09

2006-05-09

Vanatta, A. (Department: 3765)

Textiles: cloth finishing

Stretching or spreading and working

C026S087000, C026S071000, C028S155000

Reexamination Certificate

active

07039990

ABSTRACT:
Apparatus and methods for stretching one or more zones of a web are disclosed. Webs including stretched or activated zones are also disclosed. Each of the zones in the web is stretched in the cross-web direction, i.e., the direction transverse to the down-web direction. The stretching it can be performed continuously as the web is advancing through the apparatus in the down-web direction. The stretching can occur in the absence of physical contact with the stretched zone of the web. Strain induced on the stretched zones can be introduced gradually over a stretch distance. The strain may increase at a linear rate. The stretching methods and apparatus may be used to activate an elastic zone or zones within a web.

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