Patent · US Expired

Stretch break method and product

US7083853B2 · kind B2 · utility

2Cited by

19References

45Claims

0Family size

Assignee

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

Inventors

Glen E. Simmonds · Avondale, US
Bill Corcoran · Kennett Square, US
Bill Walker · Wilmington, US

Key dates

Filing date	Oct 21, 2003
Grant date	Aug 1, 2006
Priority date	—
Expiry date	Oct 21, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2929
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 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. The yarn includes discontinuous and, optionally, continuous filaments.

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