Patents by Inventor Wolfgang Meintzschel

Wolfgang Meintzschel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the production of a plastic tube to be used as an artificial sausage casing
    Patent number: 3950469
    Abstract: This invention relates to a process for the manufacture of a plastic tube suitable for use as a sausage casing, which comprises extruding a crystalline thermoplastic material at a temperature above its crystalline melting point through an annular die of non-uniform cross-section, to produce a tube any cross-section of which varies continuously from a maximum to a minimum, the positions of the minimum and maximum thickness being diametrically opposed, the maximum being 1.3 to 3.0 times as thick as the minimum, cooling the tube to below its crystalline melting point, biaxially orienting the tube, and longitudinally stretching the biaxially oriented tube under conditions such that the temperature of the portion of the tube of maximum thickness is greater than that of the portion of the tube of minimum thickness. The invention also relates to the tube so produced.
    Type: Grant
    Filed: May 31, 1974
    Date of Patent: April 13, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Detlef Gneuss, Hans Strutzel, Wolfgang Meintzschel