Patent · US Expired

Stretch break method, apparatus and product

US7454816B2 · kind B2 · utility

4Cited by

46References

10Claims

0Family size

Assignee

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

Inventors

Peter Popper · Wilmington, US
Joseph Anthony Perrotto · Landenberg, US
Glen E. Simmonds · Avondale, US
Albert Tam · Hockessin, US
William Charles Walker · Wilmington, US
Joseph Leonda Jones · New Castle, US
Peter Artzt · Reutlingen, DE
Heinz-Adolf Mueller · Wilnsdorf, DE
David Carlton Visser · Wilmington, US

Key dates

Filing date	Jan 12, 2005
Grant date	Nov 25, 2008
Priority date	—
Expiry date	Nov 12, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2922
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method for stretch breaking fibers to produce a staple yarn and operating a staple fiber spinning machine, and an apparatus for performing such method, 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.