Transparent film made from PET and PEN having good UV-protection, process for its production and use in packages having elongated shelflife
摘要
<p>The polyester film (1) contains polyethylene terephthalate as a main constituent and 2-20 weight% of polyethylene naphthalate. The thickness of the film is 4-23 micrometers, and the number of pinholes per 100 m2 of the film is less than 30. Independent claims are included for the following: (1) production of polyester film; (2) packaging composite; and (3) absorption of ultraviolet radiation in packaging composite.</p>
