Patents Assigned to Windoeller & Hoelscher
  • Method for the production of bags
    Patent number: 7837606
    Abstract: A process for manufacturing a bag from a polymer and/or metal film material provides a bag that has four outer walls connected by four seams and that has a sealed lower end. The bag-forming material is fed in the form of a film web that is wound up on a roll to an unwinding station of a bottom forming device that separates the unwound film web into film segments, connects the film segments, and seals at least one end of the connected segments to form the bag.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: November 23, 2010
    Assignee: Windoeller & Hoelscher
    Inventors: Konrad Tetenborg, Uwe Koehn, Siegfried Maneke, Jan Thorsten Weber