Improving rewet shrink properties of casing
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United States of America Patent
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Oct 7, 2003
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N/A
app pub date -
Nov 17, 1999
filing date -
Nov 17, 1999
priority date (Note) -
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Abstract
Disclosed is a method of forming a seamless, non derivatized cellulose tubular film having enhanced rewet shrinkage properties. The enhanced properties are provided by first drying a hydrated extruded tube of non derivatized cellulose gel at one inflated diameter to form a tubular film. The film is then moisturized while holding an inflated diameter smaller than the drying diameter.
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