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AssigneeDsm N.V.
InventorsSaskia I. Kranenburg-Van Dijk, Franciscus W.M. Gelissen, Markus J.H. Bulters, Christiaan Schröder
Estimating the term…
The invention relates to an information-carrying molded part containing one or more plastic layers, at least one of which bears an informative representation. A ‘molded part’ is understood to be in particular a card such as ‘smart cards’, key cards, identification cards, telephone cards, credit cards or bank cards. According to the invention at least one of the plastic layers herein is made from a block-copolyester consisting of soft blocks of a flexible polymer and hard polyester blocks of repeating units of at least one alkylene glycol and at least one aromatic dicarboxylic acid or an ester thereof. The block-copolyether layer can very well be provided with an informative representation with the aid of laser writing and for example sublimation printing. The information-carrying molded part according to the invention also has a good stiffness combined with a good flexibility and a good resistance to breaking and tearing, good adhesion to for example polycarbonate. PVC-free cards can be made which do not threaten the environment.
An information-carrying card containing one or more plastic layers, at least one of which bears an informative representation, wherein at least one of the plastic layers consists essentially of a block-copolyester consisting of soft blocks and hard polyester blocks with repeating units derived from at least one alkylene glycol and at least one aromatic dicarboxylic acid or an ester thereof.
An information-carrying moulded part, containing one or more plastic layers, at least one of which bears an informative representation, wherein at least one of the plastic layers is a block-copolyester consisting of soft blocks and hard polyester blocks with repeating units derived from at least one alkylene glycol and at least one aromatic dicarboxylic acid or an ester thereof, wherein, on one or both outsides, viewed from outside inwards, it has a transparent outer layer and an inside layer consisting of a block-copolyester bearing an informative representation and wherein it contains a chip mounted in or on a block-copolyester layer with a hardness of more than 50 Shore D.
A method for displaying information on a card, comprising, providing a card containing one or more plastic layers, at least one of the layers consisting essentially of a block-copolyester consisting of soft blocks and hard polyester blocks with repeating units derived from at least one alkylene glycol and at least one aromatic dicarboxylic acid or an ester thereof, and, optionally, one or more additives, and applying an informational representation on at least one plastic layer.
A method for displaying information, comprising, providing an informational representation on a single, or multi-layer molded part, in the form of a card, wherein at least one layer of the molded part consists essentially of a block-copolyester consisting of soft blocks and hard blocks.
Dependencies are inferred from the claim text.