Bobbin for textile yarns or the like

US4108396A · kind A · utility

Inventor

• Adalbert Engel · Lörrach, DE

Key dates

• Filing date: Feb 9, 1976
• Grant date: Aug 22, 1978
• Expiry date: Feb 9, 1996

Classification

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

Abstract

A bobbin for a roll of coiled filamentary textile material has a tubular body which includes circumferentially extending larger-diameter sections alternating with smaller-diameter sections. At least some of the sections are plastically and/or elastically deformable so as to allow for predictable axial shortening and/or reduction of the outer diameter of the roll. The tubular body is permeable to liquids so that a dye or the like can permeate the roll from the outside as well as from within. The sections may constitute convolutions of a helix or discrete rings, and at least the larger-diameter sections may be hollow. The sections may form part of a corrugated tube or they may surround a rigid core whose inner diameter remains constant during axial and/or radial compression of the roll.