Patent · US Expired

Process for spinning hygroscopic filaments and fibers

US4224269A · kind A · utility

7Cited by

8References

12Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Reinehr · Dormagen, DE
Toni Herbertz · Dormagen, DE
Hermann-Josef Jungverdorben · Dormagen, DE

Key dates

Filing date	Mar 16, 1978
Grant date	Sep 23, 1980
Priority date	—
Expiry date	Mar 16, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2935
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a process for the production of hygroscopic filaments or fibers by dry-spinning a polymer solution wherein immediately they issue from the spinning jet or at the latest at a time when their solidification is still not complete, the filaments are brought into contact with water-vapour or with the vapour of another liquid which coagulates filaments.

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