Method of making spunbonded webs from linear low density polyethylene
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United States of America Patent
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-
Feb 17, 1987
Grant Date -
N/A
app pub date -
Mar 14, 1986
filing date -
Mar 14, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Spunbonded nonwoven webs having excellent properties, particularly softness, can be made from linear low density polyethylene having a critical combination of certain key properties. These properties are percent crystallinity, cone die melt flow, die swell, relation of die swell to melt index, and polymer uniformity. The polyethylene is extruded through a spinneret at a temperature between about 185.degree. and 215.degree. C. and drawn through an air gun to form the spunbonded web.
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