High filament count fine filament polyester yarns

US5741587A · kind A · utility

Assignee

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

Inventors

• David George Bennie · Castle Hayne, US
• Robert J. Collins · Wilmington, US
• Hans R. E. Frankfort · Greenville, US
• Stephen B. Johnson · Wilmington, US
• Benjamin H. Knox · Wilmington, US
• Joe Forrest London, Jr. · Greensboro, US
• Elmer E. Most, Jr. · Kinston, US
• Girish Anant Pai · Matthews, US

Key dates

• Filing date: Jun 7, 1995
• Grant date: Apr 21, 1998
• Expiry date: Jun 7, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/40
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A direct melt spinning process for providing high filament count fine filament polyester yarns having excellent mechanical quality and along-end uniformity and unitary interlace by spinning all the filaments of such high filament count yarn from a single spinneret. Such yarns may be used as direct-use yarns and as draw-feed yarns for preparing drawn flat yarns and draw-textured yarns.