Stretch break method and product

US7559121B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Joseph Anthony Perrotto · Landenberg, US
• Peter Popper · Wilmington, US
• Glen E. Simmonds · Avondale, US
• Albert Tam · Hockessin, US
• David Carlton Visser · Wilmington, US
• William Charles Walker · Wilmington, US
• Joseph Leonda Jones · New Castle, US

Key dates

• Filing date: Jan 5, 2005
• Grant date: Jul 14, 2009
• Expiry date: Mar 18, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2922
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method for stretch breaking fibers to produce a staple yarn and operating a staple fiber spinning machine that enables the production of a plurality of products of lot size smaller than a large denier tow product. The process includes at least two break zones and a consolidation zone downstream from a second break zone to form a staple yarn. The filaments are broken in a second break zone downstream from the first break zone by increasing the speed of the fiber fed into the process.