| http://www.w3.org/ns/prov#value | - A film as claimed in claim 3, wherein the cycloolefin polymer of the base layer is a cycloolefin copolymer and contains up to 99% by weight, based on the total weight of the cycloolefin copolymer, of polymerized units of an acyclic olefin of the formula VIII: ##STR6## where R9, R10, R11 and R12 are identical or different and are a hydrogen atom or C1 -C14 -hydrocarbon radical.
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