近年来,世界食品包装获得了一批新的研究成果。这些研究成果的重点是改进了食品包装材料的性能,特别是塑料树脂的性能。用改进后的新材料制成的包装不但能够更好地保护食品,延长储存时间,而且还可以大幅度降低包装成本。可消毒的食品塑料罐目前在美国市场上脱颖而出的这种以乙烯—乙烯醇共挤物为原料,通过多层式 In recent years, the world’s food packaging has received a number of new research results. The focus of these research efforts is to improve the performance of food packaging materials, especially plastic resins. Packaging with improved new materials not only better protects food, extends shelf life, but also significantly reduces packaging costs. Sterilizable food plastic cans stand out in the U.S. market today with ethylene-vinyl alcohol co-extruded as a raw material, through the multi-layer