US4545838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamination product and method employing temporary transfer film
Assignee: SEALTRAN CORP A CORP OF IL
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Filing: 1983-02-07
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Granted: 1985-10-08
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Expires: 2003-02-07
Abstract
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.
Inventors
- 👤 Morton Minkus
- 👤 Herbert M. Drower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:27
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/36; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B32B38/00; B32B38/06; B32B7/00; B32B7/04; B32B7/12; B42; B42D; B42D25/00; B42D25/20; B42D25/23; B42D25/30; B42D25/36; B42D25/369; B42D25/40; B42D25/405; B42D25/425; B42D25/45; B42D25/455; B42D25/46; B32B2307/00; B32B2307/40; B32B2307/412; B32B2307/50; B32B2307/514; B32B2307/518; B32B2307/70; B32B2307/702; B32B2367/00; B32B2425/00; B42D2033/04; B42D2033/16; B42D2033/24; B42D2033/30; B42D2033/40; B42D2035/02; B42D2035/16; B42D25/318; B42D25/465; B42D25/47; Y; Y10; Y10S; Y10S283/00; Y10S283/904; Y10S428/00; Y10S428/90; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/2486; Y10T428/24868; Y10T428/24876
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
149 words
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.
Claim 2
Independent Claim
149 words
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.
Claim 3
Dependent Claim
29 words
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.
Claim 4
Dependent Claim
32 words
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.
Claim 5
Dependent Claim
29 words
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.
Claim 6
Dependent Claim
31 words
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.
Claim 7
Dependent Claim
29 words
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.
Claim 8
Dependent Claim
32 words
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.
Claim 9
Independent Claim
168 words
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.
Claim 10
Independent Claim
168 words
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.
Claim 11
Dependent Claim
29 words
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.
Claim 12
Dependent Claim
32 words
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.
Claim 13
Dependent Claim
29 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |