Patents Assigned to ELAG VERPACKUNGEN AG
  • METHOD OF JOINING FILMS
    Publication number: 20110036480
    Abstract: The invention describes a method of joining films made from at least one layer from the group comprising polyethylene, polypropylene polyamide and polyethylene terephthalate by welding. In order to produce the join, which is specifically required to withstand higher dynamic loads in terms of its strength, the materials are heated by ultrasound in the region of the contact layer as proposed by the invention until they have at least softened, and actively laterally and vertically intermixed by continuing to apply ultrasound.
    Type: Application
    Filed: July 11, 2007
    Publication date: February 17, 2011
    Applicant: ELAG VERPACKUNGEN AG
    Inventors: Martin Kropf, Christian Auchli