Thin films deposited by vacuum coating, with their unusual properties of being extremely thin and relatively impervious to the diffusion of gas, water vapor and aromas, lend themselves to being ideal components for future recyclable packaging. This article will describe the main trend in vacuum deposition, including the development of barrier solutions for mono-material packaging based on polyolefins – in particular, oriented polyethylene (OPP) – and on the integration of vacuum and atmospheric coating. The topic will be illustrated and discussed from our firm’s latest experience on multiple sources, materials and solutions with pilot trials at the recently implemented demonstration center.
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