Carrier sleeve

US3997929A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Wolfram Schultheiss
• Harald Hoffmann · Much, DE

Key dates

• Filing date: Aug 15, 1975
• Grant date: Dec 21, 1976
• Expiry date: Aug 15, 1995

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2701/31
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a method of dyeing or bleaching shrinking yarns positioned in the form of cheeses or cross/wound packages on a fiber package by contacting said yarns with a dyeing or bleaching liquor while the same are maintained on said fiber package, the improvement which comprises utilizing as the packaged one having an interior sleeve of a porous, elastic, non-woven fabric of synthetic fibers, said fabric free of any binding agent, said synthetic fibers being largely non-dyeable under the conditions of the dyeing process.