All polyester film composite useful for credit and identification cards

• US 5,171,625 A
• Filed: 01/31/1991
• Issued: 12/15/1992
• Est. Priority Date: 01/31/1991
• Status: Expired due to Term

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: ICI Americas Inc (Astrazeneca PLC)
• Inventors: Newton, John R.
• Primary Examiner(s): Thibodeau, Paul J.
• Assistant Examiner(s): NAKARANI, DHIRAJLAL S
• Application Number:
  US07/649,775
• Time in Patent Office: 684 Days
• Field of Search: 428/480, 428/910, 428/195, 428/201, 428/206, 428/207, 428/203
• US Class Current: 428/195.1
• CPC Class Codes: B32B 2250/244 All polymers belonging to those covered by group B32B27/36
• CPC Class Codes: B32B 2307/41 Opaque
• CPC Class Codes: B32B 2307/518 bi-axially
• CPC Class Codes: B32B 2307/75 Printability
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/20 using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B42D 25/46 using pressure
• CPC Class Codes: Y10S 428/91 Product with molecular orientation
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24851 Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/24868 Translucent outer layer
• CPC Class Codes: Y10T 428/24893 including particulate material
• CPC Class Codes: Y10T 428/24901 including coloring matter
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]

Abstract

The present invention relates to an all polyester composite film structure having: (a) an opaque, biaxially oriented polyester support core film, (b) a clear, biaxially oriented polyester top film, and (c) a first pair of dye receptive or printable receiver films that can be heat sealed together and sandwiched between the top surface of the core film and one surface of the top film wherein at least one surface of a receiver film of the first pair of receiver films is printed with a dye to form printed matter.

Claims

1. An all polyester composite film structure consisting essentially of:

(a) an opaque, biaxially oriented polyester support film;

(b) a clear, biaxially oriented polyester top film;

(c) a pair of dye receptive and heat sealable thermoplastic polyester polymer receiver films that are heat sealed together and sandwiched between the top surface of the support film and one surface of the top film wherein at least one surface of a receiver film of the first pair of receiver films is printed with a dye to form printed matter such that the printed matter is between the two receiver films.

2. An all polyester film composite structure consisting essentially of:

(a) an opaque, biaxially oriented polyester support film;

(b) a clear, biaxially oriented polyester top film;

(c) a first pair of dye receptive and heat sealable thermoplastic polyester polymer receiver films heat sealed together and sandwiched between the top surface of the support film and one surface of the top film wherein at least one receiver film of the first pair of receiver films is printed with a dye to form printed matter such that the printed matter is between the two receiver films;

(d) a clear, biaxially oriented polyester bottom film;

(e) a second pair of dye receptive and heat sealable thermoplastic polyester polymer receiver films that are heat sealed together and sandwiched between the bottom surface of the support film and one surface of the bottom film wherein at least one receiver film of the second pair of receiver films is printed with a dye to form printed matter such that the printed matter is between the two receiver films.