Highly Flexible Foil Composite Material and Its Use in Card Bodies
AssigneeGiesecke & Devrient GmbH
InventorsJosef RIEDL, Andreas BRAUN
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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.
Claims4
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.
Dependencies are inferred from the claim text.