Patents Assigned to Bayer Faser GmbH
  • Process for adjusting the viscosity of highly concentrated elastane solutions for the dry spinning or wet spinning of elastane fibres
    Patent number: 5741867
    Abstract: The invention relates to a process for adjusting the viscosity of highly concentrated elastane solutions by reaction of the solution with secondary aromatic amines in order to produce spinning solutions for the dry or wet spinning of elastane fibres.
    Type: Grant
    Filed: January 10, 1996
    Date of Patent: April 21, 1998
    Assignee: Bayer Faser GmbH
    Inventors: Ulrich Reinehr, Gunter Turck, Tilo Sehm, Wolfgang Anderheggen, Toni Herbertz, Gino Antolini
  • Process for producing splittable elastane yarns
    Patent number: 5723080
    Abstract: An improved dry spinning process for manufacturing splittable elastane multifilament yarns wherein the coalescence of individual filaments is prevented, through the use of multihole spinning jets, laminarizing gas flow and thread guides having one opening per individual fiber.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: March 3, 1998
    Assignee: Bayer Faser GmbH
    Inventors: Ben Bruner, James F. Heslep, Hans-Josef Behrens, Konrad Schmitz, Karlheinz Wolf
  • Process for preparing multifilament wet-spun elastane threads
    Patent number: 5670105
    Abstract: The invention relates to a process for preparing multifilament, wet-spun elastane threads with increased spinning output, which is achieved by largely removing entrained water from the filaments after leaving the spinning bath and then fixing the threads on at least two rollers at a temperature of at least 200.degree. C. for at least 3 seconds.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: September 23, 1997
    Assignee: Bayer Faser GmbH
    Inventors: Ulrich Reinehr, Gunter Turck, Tilo Sehm, Wolfgang Anderheggen, Toni Herbertz, Gino Antolini
  • Process for adjusting the viscosity of highly concentrated elastane solutions for the dry spinning or wet spinning of elastane fibres
    Patent number: 5610229
    Abstract: The invention relates to a process for adjusting the viscosity of highly concentrated elastane solutions by reaction of the solution with secondary aromatic amines in order to produce spinning solutions for the dry or wet spinning of elastane fibers.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: March 11, 1997
    Assignee: Bayer Faser GmbH
    Inventors: Ulrich Reinehr, Gunter Turck, Tilo Sehm, Wolfgang Anderheggen, Toni Herbertz, Gino Antolini