Method and dye tube for uniform compression of yarn

US4946114A · kind A · utility

Inventors

• Josef Becker · Neunkirchen, DE
• Hubert Becker · Aachen, DE
• Matthias Becker · Herzogenaurach, DE

Key dates

• Filing date: Nov 20, 1989
• Grant date: Aug 7, 1990
• Expiry date: Nov 20, 2009

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06B23/042
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A yarn roll carrier tube and method of employing same to effect uniform compression of a yarn roll mounted on said tube is disclosed. The tube includes a central compressible portion, a contoured portion at one end, and an annular opening having a recessed stop portion at the other end. The tubes are sized such that the contoured portion may be inserted into and frictionally retained within the annular opening of a similar tube by a predetermined mount dictated by the position of said stop shoulder by the exertion of a compressive force exerted by one said tube against the other. Yarn rolls mounted on adjacent said tubes are partially compressed by the insertion of one tube into the other into said nested position, said insertion resulting in a preferential compression of the central portions of the yarn rolls. Subsequent compressive forces of a greater magnitude when exerted against the tubes result in axial foreshortening of the tubes and greater compression of the yarn rolls.