DISPOSABLE HYGIENE PRODUCTS APPLYING AN ELASTIC SPANDEX FIBER WITH HIGH POWER RETENTION
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United States of America Patent
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Issued Date -
Aug 5, 2010
app pub date -
Jun 20, 2008
filing date -
Jul 6, 2007
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Abstract
The present invention relates to disposable hygiene products such as a diaper or a sanitary napkin applying an elastic spandex fiber with high power retention. A polyurethane-based spandex fiber is produced by reacting an organic diisocyanate with a polymer diol to prepare a prepolymer, dissolving the prepolymer in an organic solvent, and reacting the resulting solution with a diamine and a monoamine. A disposable hygiene product having better functionality and wearing comfort is provided by using a spandex fiber as an elastic yarn, wherein the spandex fiber has power retention of 70% or more.
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