# US 2014/0193638 A1 · PET-C Based Security Laminates and Documents

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- Number: US 2014/0193638 A1
- Document ID: US20140193638A1
- Status: Published application
- Kind: A1
- Application number: 14/238,810
- Filed: 2012-09-03
- Published: 2014-07-10
- Earliest claimed: 2011-09-12
- Assignees: Agfa-Gevaert
- Inventors: Vera Drieghe; Peter Cantraine; Bart Waumans; Walther Wouters; Ingrid Geuens
- Web page: https://patentgrep.com/patent/US20140193638A1

## CPC

- C09J 7/29: Laminated material (metallised plastics C09J7/22)
- 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)
- B42D 25/47: using adhesives
- C08J 7/042: {with two or more layers, where at least one layer of a composition contains a polymer binder}
- C08J 7/043: Improving the adhesiveness of the coatings per se, e.g. forming primers (adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50)
- C08J 7/046: Forming abrasion-resistant coatings; Forming surface-hardening coatings
- B29C 55/10: multiaxial
- B42D 2033/04
- B42D 2033/20
- B42D 2033/30
- B42D 2033/46
- C08J 2367/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds; (C08J2367/06 takes precedence)
- Y10T 428/264: Up to 3 mils
- Y10T 428/265: 1 mil or less
- Y10T 428/2848: Three or more layers
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- B42D: BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A security laminate (1) including in order a transparent oriented polyester support (2), a subbing layer (3) and an adhesive layer (4) which is coated on top of the subbing layer, wherein the binder of the adhesive layer is based on a mixture of a first and a second polymer in a weight ratio from 50/50 to 90/10, wherein the first polymer is a copolymer comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the first polymer; wherein the second polymer is a copolymer of styrene, butadiene and methylmethacrylate or a copolymer of vinyl butyral, vinyl acetate and vinyl alcohol; and wherein the binder of the subbing layer is based on a polyester-urethane copolymer.

## Claims

### Claim at position 1

1-15. (canceled)

### Claim 16

A security laminate including in order an oriented polyester support, a subbing layer, and an adhesive layer which is coated on top of the subbing layer, wherein the binder of the adhesive layer is based on a mixture of a first and a second polymer in a weight ratio from 50/50 to 90/10,
wherein the first polymer is a copolymer comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the first polymer;
wherein the second polymer is a copolymer of styrene, butadiene and methylmethacrylate, a copolymer of vinyl butyral, vinyl acetate and vinyl alcohol and/or particulate polymethylsilsesquioxane.

### Claim 17 (depends on 16)

The security laminate according to claim 16, wherein the binder of the subbing layer is based on a polyester-urethane copolymer.

### Claim 18 (depends on 16)

The security laminate according to claim 16, wherein the oriented polyester support is a biaxially stretched polyethylene terephthalate support.

### Claim 19 (depends on 17)

The security laminate according to claim 17, wherein the oriented polyester support is a biaxially stretched polyethylene terephthalate support.

### Claim 20 (depends on 16)

The security laminate according to claim 16, wherein the first polymer is a hydroxyl-functional, partially-hydrolyzed vinyl chloride/vinyl acetate copolymer.

### Claim 21 (depends on 17)

The security laminate according to claim 17, wherein the first polymer is a hydroxyl-functional, partially-hydrolyzed vinyl chloride/vinyl acetate copolymer.

### Claim 22 (depends on 19)

The security laminate according to claim 19, wherein the first polymer is a hydroxyl-functional, partially-hydrolyzed vinyl chloride/vinyl acetate copolymer.

### Claim 23 (depends on 16)

The security laminate according to claim 16, wherein the thickness of the adhesive layer is between 1 μm and 12 μm.

### Claim 24 (depends on 19)

The security laminate according to claim 19, wherein the thickness of the adhesive layer is between 1 μm and 12 μm.

### Claim 25 (depends on 22)

The security laminate according to claim 22, wherein the thickness of the adhesive layer is between 1 μm and 12 μm.

### Claim 26 (depends on 16)

The security laminate according to claim 16, having a thickness between 23 μm and 80 μm.

### Claim 27 (depends on 16)

A security document containing the security laminate as defined in claim 16.

### Claim 28 (depends on 27)

The security document according to claim 27, wherein the security laminate is laminated onto an ink layer covering more than 80% of the surface of a security document precursor.

### Claim 29 (depends on 27)

The security document according to claim 27 containing the security laminate on both sides of its security document core.

### Claim 30 (depends on 27)

The security document according to claim 27, wherein the security document core includes one or more lamellae selected from the group consisting of an amorphous polyester lamella, a crystalline polyester lamella, a polycarbonate lamella, a polyolefin lamella and a polyvinyl chloride lamella.

### Claim 31 (depends on 27)

The security document according to claim 27, wherein the security document includes an electronic chip and optionally an antenna.

### Claim 32

A method of preparing a security laminate including the steps of:
a) stretching a polyester substrate in either a longitudinal or a transversal direction;
b) coating and drying a subbing layer on the stretched polyester substrate;
c) stretching the coated polyester substrate in the longitudinal or transversal direction not selected in step a) in order to obtain a coated biaxially stretched polyester substrate having a subbing layer; and
d) coating and drying an adhesive layer on top of the dry subbing layer, wherein the adhesive layer contains a mixture of a first and a second polymer in a weight ratio from 50/50 to 90/10,
wherein the first polymer is a copolymer comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the first polymer;
wherein the second polymer is a copolymer of styrene, butadiene and methylmethacrylate, a copolymer of vinyl butyral, vinyl acetate and vinyl alcohol and/or particulate polymethylsilsesquioxane.

### Claim 33 (depends on 32)

The method according to claim 32, wherein the subbing layer contains a binder selected from the group consisting of a hydroxyl-functional, partially-hydrolyzed vinyl chloride/vinyl acetate copolymer and a polyester-urethane copolymer.

### Claim 34 (depends on 32)

The method according to claim 32, wherein the polyester substrate is a polyethylene terephthalate substrate.

### Claim 35 (depends on 33)

The method according to claim 33, wherein the polyester substrate is a polyethylene terephthalate substrate.

### Claim 36 (depends on 16)

A method of impeding the falsification of a security document comprising utilizing a security laminate as defined in claim 16.