Patent · US Active

Fully degradable non-woven fabric produced by melt-blow extrusion and application thereof in production of medical masks

US11840783B2 · kind B2 · utility

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1References

7Claims

0Family size

Assignees

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	Dec 12, 2023
Priority date	—
Expiry date	Nov 7, 2041

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD10B2501/042
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A fully degradable non-woven fabric produced by melt-blown extrusion and an application thereof in the production of medical masks. The fully degradable non-woven fabric is produced through steps of: (S1) preparation of caprolactone-lactic acid random copolymer; (S2) preparation of copolymerized modified PLA; and (S3) preparation of non-woven fabric by the melt-blown extrusion.

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