Patents Assigned to Sealtran Corp.
  • Patent number: 4545838
    Abstract: A laminating film product for applying a sealed protective cover to a document such as an identification card has a cover film of an unoriented polyester resin extruded onto a surface of a transfer film of an oriented thermoset polyester resin that has been coated with a release agent such as a soap; a film of a thermoplastic adhesive resin may be extruded onto the exposed surface of the cover film. In use, the laminating film product is laminated to a document under heat and pressure, the transfer film is stripped away, and the exposed cover film is embossed. Magnetic strips, pigment strips, and the like may also be applied to the cover film by hot stamp transfer.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: October 8, 1985
    Assignee: Sealtran Corp.
    Inventors: Morton Minkus, Herbert M. Drower