Plastic Barrier Film Development with Ethylene Vinyl-alcohol (EVOH)Film and New Film for Warm Applications
Ethylene vinyl-alcohol copolymer (EVOH) is a thermoplastic crystalline polymer with many unique properties.It is well known as a barrier plastic,widely used in many applications such as food,medical,agricultural or automotive areas.Vacuum insulation panel (VIP) is a difficult application for us,which requires high barrier properties to maintain vacuum inside for years.In order to meet this requirement,a vapor metalized biaxially oriented EVOH film (VM-EVOH) had been developed and commercialized by Kuraray under the trade name of EVALTM Film VM-XL.Unlike other barrier films,it has a dual barrier structure which consists of a VM barrier layer on an EVOH substrate with high barrier and resistance.Thanks to the excellent and reliable barrier performance,VM-EVOH has been employed as one of the major barrier materials in VIP envelopes.Recently,KURARAY is responding to increasing inquiries for plastic barrier films which can work in a VIP exposed under severer conditions,e.g.high temperature and high humidity,in comparison with existing applications like insulation for refrigerators.This paper,presents a study on the barrier properties of different envelope structures under a variety of conditions in order to discuss diffusion characteristics.Our newly developed barrier films are included in this study.
vapor metalized biaxially oriented ethylene vinyl-alcohol copolymer film (VM-EVOH)
Masakazu Nakaya
EVAL R&D Department, EVAL Division, Vinyl Acetate Resin Company, Kuraray Co., Ltd.,7471 Tamashimaotoshima, Kurashiki, Okayama, 713-8103, Japan
国际会议
The 12th International Vacuum Insulation Symposium (IVIS 2015)(第十二届国际真空绝热材料会议)
南京
英文
115-118
2015-09-01（万方平台首次上网日期，不代表论文的发表时间）