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PVA薄膜是以PVA树脂为主要原料,根据需要适当加入增塑剂、抗粘闭剂、加工助剂等多种助剂经特定成型方法制造的一种薄膜. 作为一种包装材料,PVA薄膜有一系列优越的性能,其中尤以高透明和优良的印刷性能最为引人注目,它的透光率在90%以上,光泽度高,不经任何表面处理即能印刷牢固而鲜明的图案.同时有不易带静电,不易吸尘以及耐磨擦,不易发毛等特性.所以作为高透明薄膜,用于销售包装,提供了优越的条件.在国外,它已作为透明包装材料,广泛用于纺织品,如高级衬衫等的包装.仅日本每年应用于包装方面的PVA即在一万吨左右.近年来,应用其干态下的高阻透性,作为复合材料的基材,也越来越引起人们的关注.
PVA film is a PVA resin as the main raw material, according to the need to be appropriate to add plasticizers, anti-blocking agents, processing aids and other additives by a specific molding method of a film produced as a packaging material, PVA film has a Series of superior performance, especially in the high transparency and excellent printing performance of the most eye-catching, its light transmittance of more than 90%, high gloss, without any surface treatment that can print a solid and distinctive pattern. Not easy to bring static electricity, easy to vacuum and abrasion resistance, easy to hair and other characteristics.So as a high transparent film, used for sales and packaging, providing superior conditions in foreign countries, it has been used as a transparent packaging material, widely used in textiles, such as High-grade shirt, etc. Japan’s annual PVA packaging is about 10,000 tons in use only in recent years, the application of its high dry permeability, as the substrate of composite materials, more and more people attention.