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US 2003/0113562 A1Published application
Biaxially oriented polyester film with good metal adhesion, its use, and process for its production
OwnerStefan Bartsch, Herbert Peiffer +1inventors
InventorsStefan Bartsch, Herbert Peiffer, Richard Lee Davis
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Abstract
The invention relates to a coextruded, biaxially oriented polyester film with high metal adhesion, composed of a base layer B and of at least one outer layer A applied to the base layer. The invention further relates to the use of the film and to a process for its production.
Claims9
A biaxially oriented polyester film with good metal adhesion, where the polyester film has at least one base layer B and at least one outer layer A in the presence or absence of other conventional additives, wherein the outer layer A
- a) comprises a copolymer having from 20 to 80% by weight of ethylene 2,6-naphthalate units and up to 80% by weight of ethylene terephthalate units in the presence or absence of units made from cycloaliphatic or aromatic diols and dicarboxylic acids, other than 2,6-naphthalate dicarboxylic acid or terephthalic acid
- b) has thickness ≦1.0 μm, and
- c) has metal adhesion (after metalization) of ≧2 N/25 mm.
Dependencies are inferred from the claim text.