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US 12,473,420 B2Granted
Method for processing waste fabric containing polyester and wool fibers
AssigneeNan Ya Plastics Corporation
InventorsTe-Chao Liao, Jung-Jen Chuang, Chung-Chi Su
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Abstract
A method for processing a waste fabric containing polyester and wool fibers includes the following steps. The method is to treat the waste fabric with an acid catalyst aqueous solution at 160° C. to 170° C. The wool fibers are degraded and completely separated from the polyester fibers in a treatment process. Afterwards, the polyester fibers are recycled.
Claims8
A method for processing a waste fabric containing polyester and wool fibers, comprising:
- providing a waste fabric containing polyester and wool fibers and fragmentizing the waste fabric into a plurality of fabric scraps;
- treating the waste fabric with an acid catalyst aqueous solution, wherein the acid catalyst aqueous solution is applied in a circulation and backflow manner to repeatedly contact the fabric scraps and carry out a hydrothermal reaction at 160° C. to 170° C. for 1 hour to 5 hours, such that the wool fibers are degraded and separated from the polyester fibers, and wherein a contact frequency of the acid catalyst aqueous solution with the fabric scraps is 3 to 5 times per minute;
- and
- recycling the treated waste fabric.
1 more element
Dependencies are inferred from the claim text.