Convertech Pacific Article Summary
Possibility of Extrusion Lamination to Transparent Deposited Films - Study of application of adhesive resins - / DuPont-Mitsui Polychemicals Co., Ltd.
Issued on 2000-3rd
Heading: Technical Progress
Title: Possibility of Extrusion Lamination to Transparent Deposited Films - Study of application of adhesive resins -
Author / Company:DuPont-Mitsui Polychemicals Co., Ltd. Hitoshi Tachino, Planning Department Reiko Okamoto, Technical Center
1. Introduction
Development of deposited films of inorganic oxides started in 1964, when E.I. DuPont attempted vacuum evaporation of silicon oxides to plastic films, and many companies in Japan started commercialization of transparent deposited films from the latter half of 1980s. The reasons why transparent deposited films attract attention are that they have an excellent gas barrier, are colorless and transparent, do not cut off electromagnetic waves, so that metal detectors can be used and they can be applied to microwave ovens, and furthermore, are an environmental friend because of less residue and non-halogen.
However, when transparent deposited films are used as packaging materials, dry lamination with various substrates is the mainstream at present because the deposited surfaces are non-adhesive and fragile with thermal shock. Therefore, extrusion lamination techniques suitable for mass production have not been established yet.
Our Ionomer resin ¡ÈHIMILAN¡É and ethylene-(meta)acrylic acid copolymer ¡ÈNUCREL¡É are ethylene-based copolymers having polar groups. Being characterized in having good adhesion to metal foil in a relatively low temperature range, they are widely used for the purpose of packaging applications for snack foods, or as liquid paper containers, and compresses, etc.
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