论文部分内容阅读
金属箔层压材料和镀金属的薄膜用于包装消费品已经多年,尤其是在食品工业和医药工业中的应用更是如此。最近(1979年)对67家英国公司和24家欧洲公司生产的透湿率低于1.0克/米~2·天的隔潮材料进行的市埸调查表明:金属箔层压材料的透湿率低于通常使用的2×250微米聚乙烯塑料袋的透湿率的二十分之一;镀金属的薄膜除了在透湿率相同时薄得多以外,并不明显地优于聚乙烯。六十年代
Metal foil laminates and metallized films have been used to package consumer products for many years, especially in the food and pharmaceutical industries. A recent market survey conducted in 1979 on moisture barrier materials produced by 67 British companies and 24 European companies with a moisture permeability of less than 1.0 g / m2 day showed that the moisture permeability of the metal foil laminate Less than one twentieth of the moisture permeability of commonly used 2 x 250 micron polyethylene plastic bags; the metallized film is not significantly superior to polyethylene except at much the same moisture vapor permeability. Sixties