Process and product thereof for stretching a non-woven web of an orientable polymeric fiber
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United States of America Patent
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-
Sep 16, 1980
Issued Date -
N/A
app pub date -
Apr 27, 1978
filing date -
Mar 31, 1975
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A non-woven web of synthetic fibers is selectively stretched in incremental portions in a first and second station wherein the first and second station are provided with sets of rolls having grooves parallel and perpendicular, respectively, to the axis of each set of rolls to form a bi-axially stretched web. One groove pattern of the rolls is generally a sinosoidal wave with distances between grooves being less than 1.0 millimeters times the web basis weight in grams per square meter.
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