Method for the continuous sizing and stretching of synthetic filament yarns

US4858287A · kind A · utility

Assignee

• Rhodia, Inc. · US

Inventors

• Peter Maurer · Stein, DE
• Jorg Pfister · Glückstadt, DE
• Wolfgang Sauter · Renquishausen, DE

Key dates

• Filing date: May 23, 1988
• Grant date: Aug 22, 1989
• Expiry date: May 23, 2008

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06B23/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The method for the production of partial warps wound on warping beams or sectional beams, or warps of synthetic filament yarns wound on warp beams, which are completely stretched and sized, consists of sizing a group of parallel synthetic thermoplastic filament yarns, the filaments of which are not completely stretched, in a sizing zone, predrying the sized yarns in a heated predrying zone, subjecting the predried sized group of yarn by final drying in a heated final drying zone, and finally winding the dried group of yarns on warping or (sectional) beams, while the filaments of the filament yarns are stretched jointly and simultaneously in the predrying zone. The stretching occurs preferably between rolls (5, 6) assigned to the sizing zone and rolls (10) assigned to the final drying zone. The method may be carried out with conventional, at most slightly modified sizing machines and it furnishes very uniform partial warps or warps. In particular the filaments of the filament yarns are stretched very uniformly. In addition, a twisting or twist-replacement treatment of the filament yarns prior to sizing may be eliminated because warps are obtained, the filament yarns of which have su…