MULTILAYERED HALOPOLYMER POLY(ALKYLENE NAPHTHALATE) FILMS WITH UV BLOCKING CHARACTERISTICS

摘要

The present invention provides coextruded or laminated multilayer films havingat least one layer of a halopolymer such aspoly(chlorotrifluoro ethylene) (PCTFE), at least one layer of a naphthalenecontaining polymer such as poly(ethylene naphthalate) (PEN),and an intermediate adhesive layer. The invention further provides methods ofproducing oriented, multilayer films which comprise eithercoextruding or laminating at least one layer of a halopolymer to a surface ofat least one layer of a naphathalene containing polymer by anintermediate adhesive layer. The multilayer film may be uniaxially orbiaxially stretched, and an optional thermoplastic polymer layer maybe attached to another surface of either the halopolymer layer, thenaphthalene containing polymer layer, or both, by another intermediateadhesive layer.