Patents Represented by Attorney Edward R. Sherer
  • Patent number: 4906519
    Abstract: This invention pertains to variable denier filaments prepared from synthetic polymers having a glass transition temperature of at least 30.degree. C. and yarns made therefrom. The filaments have longer length slubs, which results in their use in fabrics desiring a variable texture and dyeing effects. The filaments are prepared by drawing at ambient temperature a feeder yarn having sufficient molecular orientation at carefully controlled draw ratios and in draw zones having a specified length.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: March 6, 1990
    Assignee: BASF Corporation
    Inventors: Wayne S. Stanko, Stuart H. Rice