Lamination product and method employing temporary transfer film

• US 4,545,838 A
• Filed: 02/07/1983
• Issued: 10/08/1985
• Est. Priority Date: 02/07/1983
• Status: Expired due to Term

• Current Assignee: Transilwrap Company, Inc.
• Original Assignee: Sealtran Corporation
• Inventors: Drower, Herbert M., Minkus, Morton
• Primary Examiner(s): Bell, Paul A.
• Application Number:
  US06/464,680
• Time in Patent Office: 974 Days
• Field of Search: 283/7, 283/107, 283/108, 283/109, 283/110, 283/111, 283/112, 283/904, 428/13, 428/347, 428/343, 428/352, 428/483, 156/220, 156/230, 156/244.12, 156/244.24, 156/246, 156/289
• US Class Current: 156/220
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/518 bi-axially
• CPC Class Codes: B32B 2307/702 Amorphous
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2425/00 Cards, e.g. identity cards, credit cards
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 37/153 at least one layer is extruded and immediately laminated while in semi-molten state
• CPC Class Codes: B32B 38/06 Embossing
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B42D 2033/04 Transparent material
• CPC Class Codes: B42D 2033/16 Magnetic or magnetisable material
• CPC Class Codes: B42D 2033/24 Reliefs or indentations
• CPC Class Codes: B42D 2033/30 Plastic material
• CPC Class Codes: B42D 2033/40 with a foldable or removable part
• CPC Class Codes: B42D 2035/02 Nature of the markings
• CPC Class Codes: B42D 2035/16 Bars or lines
• CPC Class Codes: B42D 25/00 Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof printing processes to produce identification or security features B41M3/14
• CPC Class Codes: B42D 25/23 Identity cards
• CPC Class Codes: B42D 25/318 Signatures
• CPC Class Codes: B42D 25/369 : Magnetised or magnetisable materials
• CPC Class Codes: B42D 25/425 : by deformation, e.g. embossing
• CPC Class Codes: B42D 25/45 : Associating two or more layers
• CPC Class Codes: B42D 25/455 : using heat
• CPC Class Codes: B42D 25/46 : using pressure
• CPC Class Codes: B42D 25/47 : using adhesives
• CPC Class Codes: Y10S 283/904 : Credit card
• CPC Class Codes: Y10S 428/90 : Magnetic feature
• CPC Class Codes: Y10T 156/1041 : Subsequent to lamination
• CPC Class Codes: Y10T 428/24843 : with heat sealable or heat releasable adhesive layer
• CPC Class Codes: Y10T 428/2486 : with outer strippable or release layer
• CPC Class Codes: Y10T 428/24876 : Intermediate layer contains particulate material [e.g., pigment, etc.]

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.

Claims

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.

8. 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;

B1. 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 cover film releasably bonded in surface-to-surface relation to the transfer film;

B2. extruding a film of a soft thermoplastic adhesive resin, activatable by heat and pressure, onto the exposed surface of the cover film to form a laminating film product;

C. aligning the laminating product with a document, with the adhesive 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.

9. The method of forming a transparent sealed protective cover on a document according to claim 8, comprising the following additional step:

embossing the cover film with a predetermined pattern.

10. The method of forming a transparent sealed protective cover on a document according to claim 8, comprising the following additional step:

bonding a data strip into the surface of the cover film.

11. The method of forming a transparent sealed protective cover on a document according to claim 10, comprising the following additional step:

embossing the cover film with a predetermined pattern.