Patent · US Expired

Processes and apparatus for thermal treatment of filaments

US4118843A · kind A · utility

22Cited by

5References

27Claims

0Family size

Assignee

Barmag Barmer Maschinenfabrik Aktiengesellschaft · DE

Inventors

Heinz Schippers
Peter Dammann · Remscheid, DE
Karl-Heinz Bauer · Graben-Neudorf, DE

Key dates

Filing date	Jul 13, 1977
Grant date	Oct 10, 1978
Priority date	—
Expiry date	Jul 13, 1997

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD02G1/205
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Apparatus and process for thermal treatment of thermoplastic polymer multifile filaments embodying at least one stuffing chamber for forming at least one multifile filament into at least one tightly coherently packed filamentary body, feeding one or more of said filamentary bodies onto gas-permeable, slowly rotating drum on which it or they are conveyed in a side-by-side, spiral orientation by the rotating drum while a fluid, e.g., air is drawn through the filamentary bodies, said filamentary bodies being conveyed from the stuffing chamber at a constant rate and being deflected at a predetermined pitch angle before or during initial contact with the drum surface.

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