Invention Grant
- Patent Title: Method for preparing fully-degradable non-woven fabric by spun-bonding
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Application No.: US17507790Application Date: 2021-10-21
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Publication No.: US12012681B2Publication Date: 2024-06-18
- Inventor: Jingren He , Yubao Li , Dong Wu , Shuxin Ye , Sijia Jiang , Rui Zhang
- Applicant: CHINA YUNHONG HOLDINGS CO., LTD. , Yunhong Environmental Technology Co., Ltd. , Guozhong Xinghe Biomedical Technology Co., Ltd.
- Applicant Address: CN Hubei
- Assignee: China Yunhong Holdings Co., Ltd.,Yunhong Environmental Technology Co., Ltd.,Guozhong Xinghe Biomedical Technology Co., Ltd.
- Current Assignee: China Yunhong Holdings Co., Ltd.,Yunhong Environmental Technology Co., Ltd.,Guozhong Xinghe Biomedical Technology Co., Ltd.
- Current Assignee Address: CN Huanggang; CN Huanggang; CN Huanggang
- Priority: CN 2110719866.8 2021.06.28
- Main IPC: D04H1/56
- IPC: D04H1/56 ; B29B9/12 ; C08G63/08 ; C08G63/78 ; C08G63/90 ; C08G63/91 ; D01D5/088
Abstract:
Disclosed is a method for preparing a fully-degradable non-woven fabric by spun-bonding, including: (S1) preparation of a poly(caprolactone-co-lactide acid) (P(CL-co-LA)); (S2) preparation of a copolymerized-modified poly(lactide acid) (PLA); and (S3) preparation of a full-degradable non-woven fabric using a spun-bond method. In this disclosure, the PLA is modified in gradient several times to prepare the full-degradable non-woven fabric in combination with an optimized spun-bonding method.
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