Patents Assigned to Bertex Systems, Inc.
  • Patent number: 6027597
    Abstract: A method of producing a single unit phone card assembly including providing sheets of material including a primary sheet, a secondary sheet, and an overlaminating sheet; printing information on the primary sheet; applying a coating of release agent on a face side of the primary sheet; applying a coating of varnish on a rear side of the primary sheet; applying a layer of adhesive on a face side of the secondary sheet; laminating the rear side of the primary to the face side of the secondary sheet using the adhesive layer; cutting the primary sheet after lamination of the primary and secondary sheets; laminating the overlaminating sheet to the primary sheet such that the overlaminating sheet contacts the release agent; cutting the laminated primary, secondary, and overlaminating sheets to form the single unit phone card assembly and to form excess material; applying functional perforations to the assembly; and stripping the excess material from the assembly.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: February 22, 2000
    Assignee: Bertex Systems, Inc.
    Inventor: George W. Main