水溶性聚乙烯醇薄膜应用及生产工艺

Application and Production Process of Water-Soluble Polyvinyl Alcohol Films

水溶性聚乙烯醇(PVA)薄膜是一种具有水溶性、生物降解性、阻隔性等优良性能的无毒、无污染的新型绿色包装材料,应用领域广泛。详细介绍了PVA的性质、水溶性PVA薄膜制品的主要成分和其环境友好性、可调节水溶性、气体阻隔性、耐油抗静电等诸多优良特性;重点概述了水溶性PVA薄膜的在食品、日化产品包装、医疗、前沿纳米领域的国内外应用现状以及干法熔融挤出吹塑、湿法流延、湿法吹塑、连续双轴取向等生产工艺;对目前国内PVA产业存在的问题进行了分析;并对其广阔的应用前景进行了展望。

Water-soluble poly(vinyl alcohol) film is a new type of non-toxic and pollution-free green packaging material with excellent properties such as water solubility, biodegradability and barrier property. It has wide application fields. The properties of PVA, the main components of water-soluble PVA film products and its environmental friendliness, adjustable water solubility, gas barrier properties, oil resistance, antistatic and many other excellent characteristics were described in detail. The application status of water-soluble PVA films in food, daily chemical product packaging, medical treatment and frontier nanometer fields at home and abroad and the production processes of dry melt extrusion blow molding, wet casting, wet blow molding and continuous biaxial orientation were summarized. The current problems in the domestic PVA industry were analyzed, and its broad application prospects were prospected at last.