Patent · US Active

Method for preparing fully-degradable non-woven fabric by spun-bonding

US12012681B2 · kind B2 · utility

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Inventors

Jingren He · Hubei, CN
Yubao Li · Beijing, CN
Dong Wu · Hubei, CN
Shuxin Ye · Hubei, CN
Sijia Jiang · Hubei, CN
Rui Zhang · Beijing, CN

Key dates

Filing date	Oct 21, 2021
Grant date	Jun 18, 2024
Priority date	—
Expiry date	Sep 9, 2042

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD10B2401/12
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.