# US 2014/0151923 A1 · Highly Flexible Foil Composite Material and Its Use in Card Bodies

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- Number: US 2014/0151923 A1
- Document ID: US20140151923A1
- Status: Published application
- Kind: A1
- Application number: 14/172,551
- Filed: 2014-02-04
- Published: 2014-06-05
- Earliest claimed: 2010-02-25
- Assignees: Giesecke & Devrient GmbH
- Applicants: Giesecke & Devrient GmbH
- Inventors: Josef RIEDL; Andreas BRAUN
- Web page: https://patentgrep.com/patent/US20140151923A1

## CPC

- B29C 48/08: flexible, e.g. films
- B29C 48/307: {specially adapted for bringing together components, e.g. melts within the die}
- B29D 7/01: Films or sheets
- B32B 7/022: Mechanical properties
- B32B 7/10: at least one layer having inter-reactive properties
- B32B 27/08: of synthetic resin
- B32B 27/18: characterised by the use of special additives
- B32B 27/285: {comprising polyethers}
- B32B 27/36: comprising polyesters
- B32B 27/365: {comprising polycarbonates}
- B32B 27/40: comprising polyurethanes
- 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 25/305: Associated digital information (record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00)
- B42D 25/45: Associating two or more layers
- B29C 48/15: incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C 48/21: the layers being joined at their surfaces
- B29C 48/495: Feedblocks (extrusion moulding of multi-component articles B29C48/16)
- B29K 2021/003: {Thermoplastic elastomers}
- B29K 2067/00: Use of polyesters {or derivatives thereof}, as moulding material
- B29K 2067/003: {PET, i.e. poylethylene terephthalate}
- B29K 2069/00: Use of PC, i.e. polycarbonates {or derivatives thereof}, as moulding material
- B29K 2105/0026: {Flame proofing or flame retarding agents}
- B29K 2105/0032: {Pigments, colouring agents or opacifiyng agents}
- B29K 2105/0044: {Stabilisers, e.g. against oxydation, light or heat}
- B29K 2995/0025: Opaque
- B29K 2995/0026: Transparent
- B29L 2017/00: {Carriers for sound or information}
- B32B 2264/10: Inorganic particles
- B32B 2264/102: Oxide or hydroxide
- B32B 2264/108: Carbon, e.g. graphite particles
- B32B 2270/00: Resin or rubber layer containing a blend of at least two different polymers
- B32B 2274/00: Thermoplastic elastomer material
- B32B 2307/41: Opaque
- B32B 2307/412: Transparent
- B32B 2307/50: having particular mechanical properties
- B32B 2307/514: Oriented
- B32B 2307/536: Hardness
- B32B 2307/54: Yield strength; Tensile strength
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/714: Inert, i.e. inert to chemical degradation, corrosion
- B32B 2307/7145: Rot proof, resistant to bacteria, mildew, mould, fungi
- B32B 2307/732: Dimensional properties
- B32B 2307/734: Dimensional stability
- B32B 2307/75: Printability
- B32B 2425/00: Cards, e.g. identity cards, credit cards
- B32B 2429/00: Carriers for sound or information
- B42D 2033/30
- B42D 2033/46
- Y10T 428/31507: Of polycarbonate
- Y10T 428/31551: Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T 428/31565: Next to polyester [polyethylene terephthalate, etc.]
- 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)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A foil composite material usable as a layer in a card body of a portable data carrier, that includes one outer plastic layer, one inner plastic layer and one second outer plastic layer. All the layers jointly form a coextruded composite, and the plastic of one outer layer is a thermoplastic polymer or a mixture thereof. The plastic of the one inner layer is a mixture of at least one thermoplastic elastomer and at least one thermoplastic polymer. The plastic of the second outer layer is a thermoplastic polymer or a mixture thereof.

## Claims

### Claim 1

A method for manufacturing a foil composite material comprising a coextrusion of at least one first outer layer plastic material, at least one second outer layer plastic material, and at least one inner layer plastic material, comprising the steps:
all the plastic materials are extruded and merged so as to form a foil composite material having an inner plastic layer covered on both sides by a first and a second outer plastic layer,
the at least one first outer layer plastic material comprises a thermoplastic polymer or a mixture of thermoplastic polymers,
the at least one second outer layer plastic material comprises a thermoplastic polymer or a mixture of thermoplastic polymers, and
the at least one inner layer plastic material comprises a mixture of at least one thermoplastic elastomer and at least one thermoplastic polymer.

### Claim 2 (depends on 1)

The method according to claim 1, wherein an inner plastic layer is formed from an interior layer and a first exterior and a second exterior layer, and the first and second outer plastic layer are extruded at a nozzle temperature of 200 to 280° C., the first and the second exterior inner plastic layer are extruded at a nozzle temperature of 200 to 270° C., and the interior inner plastic layer is extruded at a nozzle temperature of 190 to 270° C.

### Claim 3 (depends on 1)

A method for manufacturing a card body, usable as a portable data carrier, and having a plurality of plastic layers, comprising:
a card core made of at least one inner core layer,
at least two cover layers for covering both surfaces of the card core,
wherein the plastic layers are laminated to each other in one work operation or in several work operations, and
wherein there is used at least one of the cover layers and/or as at least one outer core layer is the foil composite material according to claim 1.

### Claim 4 (depends on 3)

The method according to claim 3, wherein laminating is effected at a temperature of between 120° C. and 200° C.