PACKAGE FILM HAVING EXCELLENT OXYGEN-BARRIER PROPERTIES AND PACKAGE FILM LAMINATE BODY

摘要

PROBLEM TO BE SOLVED: To achieve compatibility between colorless transparency and high oxygen-barrier properties suitably used in food packaging, medicine packaging, cigarette packaging, electronic-material packaging, cosmetic packaging, industrial-material packaging, and so on. ;SOLUTION: This laminate body is obtained by forming a thin film layer (B), comprising a silicon oxide and an alkaline-earth metal fluoride, onto one or both sides of a polyvinyl alcohol film (A) by a vacuum thin layer formation technique. Further, an adhesive layer (C) and a plastic layer (D), as needed, are bonded onto a package film having 85% or more visible light transmission based on the 100% visible light transmission of the polyvinyl alcohol film (A), and the thin film layer (B) of the package film.;COPYRIGHT: (C)1997,JPO