ARTIFICIAL HAIR FIBER AND HAIRPIECE PRODUCT
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United States of America Patent
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Issued Date -
Apr 24, 2014
app pub date -
May 11, 2012
filing date -
May 13, 2011
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Abandoned
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Abstract
An artificial hair fiber is provided that is easy to curl or set. An artificial hair fiber is usually formed and processed within a temperature range from 90 to 150° C. The artificial hair fiber has a storage elastic modulus E′ in the formation temperature range. A ratio (E′90/E′150) of a storage elastic modulus E′ at a temperature of 90° C. to a storage elastic modulus E′ at a temperature of 150° C. is 3 to 20. By this means, the artificial hair fiber can be well curled or transformed, maintaining a desired dynamic characteristic without being melted. The artificial hair fiber can be formed and processed into such a curled hair, so that it is possible to provide a hairpiece product that meets the fashion needs of users.
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