Patents Assigned to Klaus Kalwar
  • Method of an arrangement for corona treatment
    Patent number: 4946568
    Abstract: A corona treatment of web-shaped materials or shaped bodies is performed by at least one corona electrode which has an operating region, wherein a gas and/or waste heat produced during the corona treatment is aspirated and at least partially returned to the operating region of the corona electrode.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: August 7, 1990
    Assignee: Klaus Kalwar
    Inventors: Klaus Kalwar, Horst Berger, Otto Berger, Fritz Gumpert
  • Device for the surface treatment of thermoplastic moldings by corona discharge
    Patent number: 4467200
    Abstract: An electric discharge corona discharge device is disclosed which is useful for rendering of the surface of plastic molded parts capable of being adhesively bound to another part. The device includes flexible, limp counter electrodes which can be adjusted so as to maintain a substantially uniform discharge over the plastic part surface. The discharge is obtained with alternating current and the base underneath the plastic part constitutes the base electrode.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: August 21, 1984
    Assignees: Klaus Kalwar, Firma Carl Freudenberg
    Inventors: Klaus Kalwar, Egon Freytag, Lothar Hirschinger, Klaus Ebner