Method of improving blown film processing performance and physical properties
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United States of America Patent
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Aug 16, 2005
Grant Date -
Dec 25, 2003
app pub date -
May 29, 2003
filing date -
May 31, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method of manufacturing blown polyolefin films with increased bubble stability and higher blown film production rates is disclosed. A method in which the amounts and ratios of known antioxidant polymer film additives (phosphites and phenolics) are controlled to provide limited long chain branching (LCB) and greater rheological breadth in a polyethylene melt to improve both processing characteristics and mechanical properties in the resulting film.
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