RECYCLED POLYURETHANE ELASTIC FIBER, METHOD OF PRODUCING SAME, FIBER STRUCTURE CONTAINING SAID RECYCLED POLYURETHANE ELASTIC FIBER, GATHER MEMBER, AND SANITARY MATERIAL
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United States of America Patent
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Sep 15, 2022
app pub date -
Sep 23, 2020
filing date -
Sep 24, 2019
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Abstract
The present disclosure pertains to a recycled polyurethane elastic fiber for which raw-material polyurethane elastic fiber is used as a raw material, wherein the recycled polyurethane elastic fiber is characterized in that the recycled polyurethane elastic fiber has a reduced viscosity of 1.00 or more, and the total amount of mineral oil and silicone oil remaining in the fiber interior after the recycled polyurethane elastic fiber has been rinsed with petroleum ether is 10 wt % or less with respect to the fiber weight after the rinsing. The present disclosure also pertains to: a method of producing the recycled polyurethane elastic fiber; a fiber structure containing said recycled polyurethane elastic fiber; a gather member; and a sanitary material.
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