Patents Assigned to Pro-Tech Engineering Co., Inc.
  • Patent number: 5316609
    Abstract: The apparatus and method employ upper and lower laminating films, having opposed layers of heat activated adhesive. The laminating films are brought together at the surface of an infeed roller which is positioned in front of two opposed heated laminating rollers. The laminating films are brought together at the infeed roller at such angles that an infeed shelf is formed and such that an article may be fed between the upper and lower films as they pass about the infeed roller. The article being laminated may be adjusted until the article has progressed into the nip between the laminating rollers.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: May 31, 1994
    Assignee: Pro-Tech Engineering Co., Inc.
    Inventors: James E. Guither, Francis A. Wadzinski