Patent · US Expired

Sewing thread and process for producing the same

US7678450B2 · kind B2 · utility

2Cited by
2References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 3, 2003
Grant dateMar 16, 2010
Priority date
Expiry dateMay 4, 2026

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T428/2924
  • WIPO fieldTextile and paper machines
  • WIPO sectorMechanical engineering

Abstract

To provide a sewing thread that is excellent in high-speed sewability and automatic sewing characteristics. A sewing thread includes a plurality of under-twisted yarns provided with upper-twist, the yarns each being composed of a sheath-core structure yarn composed of two or more multifilament yarns, wherein part of the sheath-core structure yarn protrudes as loops on a yarn surface, the loops being composed of 50 to 300 loops/m with 0.7 to less than 1.2 mm length and 10 or less loops/m with 1.2 mm or more length, and wherein the yarns have a strength of 4 to 6 CN/dtex.

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