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US 10,864,708 B2Granted
Multi-layer film with improved modulus properties
AssigneeCovestro Deutschland AG
InventorsHeinz Pudleiner, Klaus Meyer, Juergen Winkler, Wolfgang Braeuer, Joerg Nickel, Craig Pehlert, Chunhua Li, Yan Chen
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Abstract
The invention relates to a multi-layer, preferably co-extruded, plastic film with improved modulus properties, which is suitable, in particular, for producing three-dimensionally shaped articles.
Claims17
A three-layer plastic film, comprising:
- a core layer A comprising at least one polycarbonate or copolycarbonate and/or a polyester or copolyester having a glass transition temperature Tg from 80° C. to 200° C.,
- two outer layers B comprising at least one thermoplastic polyurethane exhibiting a hardness from 45 Shore D to 85 Shore D;
- wherein the core layer A is located between the two outer layers B.
Dependencies are inferred from the claim text.