Laminates for Packaging Films

TPX is used in mold-releasing films, printed circuit mold-releasing materials, various containers, etc., because of its heat resistance, chemical resistance, mold-releasing properties, transparency and other properties (4). In application areas, which require mechanical strength, gas barrier properties and high temperature mechanical strength, among other properties, composites are needed. 

A method of opening fine holes in the packaging media to in- 

However, a laminate consisting of a layer of TPX, an intermediate layer of an adhesive resin composition and a layer of an olefin polymer has excellent peel resistance and can be easily controlled in the gas permeability (10). 

One the attempt to give improved mechanical properties to TPX is to laminate the polymer and a resin containing polar groups, such as ethylene vinyl acetate and PA. These polymers exhibit excellent gas barrier properties, and the lamination of TPX makes an improvement in the gas barrier properties. Furthermore, PA, in particular biaxially-oriented PA, shows an excellent rigidity, toughness, impact resistance (4). 

Laminate samples are prepared by overlaying an ethylene vinyl alcohol polymer film, adhesive resin film and TPX film and are press-molded. 

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