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Lamination product and method employing temporary transfer film
| Details |
Inventors: Minkus, Morton; Drower, Herbert M.;
Assignee: Sealtran Corp. (Chicago, IL)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:
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. |
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DETAILED DESCRIPTION We claim: 1.
The method of forming a transparent sealed protective cover on an identification card or other document comprising the following steps: A.
applying a thin coating of a release agent to one surface of a transfer film of a very hard, tough thermoset resin; B.
extruding a layer of a moderately hard and tough embossable unoriented thermoplastic polyester resin onto the coated surface of the transfer film, over the release coating, to form a laminating film product having a cover film of the thermoplastic polyester resin releasably bonded in surface-to-surface relation to the transfer film; C.
aligning the laminating product with a document, with the cover film facing the document; D.
applying heat and pressure to the aligned laminating product and document, in a laminating press, to bond the laminating product to the document; and E.
peeling the transfer film away from the laminating product to expose the cover film.
2.
The method of forming a transparent sealed protective cover on a document according to claim 1, comprising the following additional step: embossing the cover film with a predetermined pattern.
3.
The method of forming a transparent sealed protective cover on a document according to claim 1, comprising the following additional step: bonding a data strip into the surface of the cover film.
4.
The method of forming a transparent sealed protective cover on a document according to claim 3, comprising the following additional step: embossing the cover film with a predetermined pattern.
5.
The method of forming a transparent sealed protective cover on a document according to claim 1 in which the thermoset resin used in step A is an oriented thermoset polyester resin.
6.
The method of forming a transparent sealed protective cover on a document according to claim 5, comprising the following additional step: embossing the cover film with a predetermined pattern.
7.
The method of forming a transparent sealed protective cover on a document according to claim 7, comprising the following additional step: bonding a data strip into the surface of the cover film
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Finance 
