水基屏障涂层的优化

Tommy Larsson, P. Emilsson
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引用次数: 2

摘要

出于个人健康和环境的考虑,消费者正在寻找“绿色”产品。包装生产商和消费者正在看到当局对包装材料和废物制定的越来越多的法规。因此,对开发可再生、可持续的纤维基包装产品的兴趣正在增长。近年来,造纸行业专注于寻找基材,化学品供应商专注于开发不同的涂层介质以提高性能。需要可持续的纸和纸板屏障产品来替代使用含有塑料、全氟碳化合物和蜡的传统包装解决方案。通常,具有水性屏障涂层的产品比传统包装解决方案更昂贵。因此,为了使水性屏障涂料的新产品具有成本竞争力,以最低的涂层重量实现最佳性能非常重要,从而使生产成本尽可能低。从试点试验的结果提出了考虑基础料(预处理和未预处理),应用方法的长和短(零)驻留,计量棒和弹性尖端。覆盖范围和屏障性能的实验室评估表明了获得屏障的正确方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization of coating with water-based barriers
For reasons of personal health and the environment, consumers are searching for “green” products. Packaging producers and consumers are seeing increased regulations set by authorities for packaging material and waste. Thus, interest in the development of renewable, sustainable fiber-based packaging products is growing. In recent years the paper industry has focused on finding substrates and the chemical suppliers have focused on developing different coating media to enhance properties. Sustainable paper and board barrier products are needed to create an alternative to the use of conventional packaging solutions containing plastics, perfluorocarbon, and wax. Typically, products with a water-based barrier coating are more expensive than conventional packaging solutions. Therefore, to make the new products with water-based barrier coatings cost competitive, the best achievable performance with the lowest coat weight is important so that production costs can be kept as low as possible. Results from pilot trials are presented that consider base stock (pretreated and non-pretreated), application methods by long- and short- (zero) dwell, and metering by rod and resilient tip. Laboratory evaluations of the coverage and barrier performance indicate the proper direction for obtaining a barrier.
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