Patents Assigned to Henneick GmbH
  • Process for the production of sandwich elements from reactive plastics material
    Patent number: 7293594
    Abstract: The invention relates to a process for the production of sandwich elements (so-called panels), in which the rising reactive mixture is guided, when it rises, through guide elements arranged between the upper and lower outer layers. This process produces void-free panels having a regular cell structure. The invention also relates to an apparatus useful for the production of such sandwich elements.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: November 13, 2007
    Assignee: Henneick GmbH
    Inventors: Ulrich Knapp, Jürgen Wirth