Hot water soluble towels, sponges and gauzes
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United States of America Patent
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Apr 15, 1997
Issued Date -
N/A
app pub date -
Aug 5, 1994
filing date -
Apr 29, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Towel, sponge and gauze products composed of fibers of polyvinyl alcohol resin. The fibers are selectively soluble in aqueous solutions only above approximately 93.degree. C. Polyvinyl alcohol fibers have a degree of hydrolysis of at least 99%, are composed of no more than 1/2% sodium acetate, 1/10% methyl alcohol and an average degree of polymerization between approximately 1300 to 1500. The polyvinyl alcohol fibers being produced by a process of dope extrusion.
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