粮食和食品很多是在包装后运销的。要求包装物能够起到防止食品由于细菌、真菌和鼠虫危害造成的重量和质量损失的作用。对于干食品和谷物来说,防虫是主要问题。良好的包装应该能够提供从包装之日起到启封之时止的全过程的安全防护,使食品和谷物免遭虫害。同时,还应保证包装内的食品和谷物不受包装材料本身,以及所含的各种添加剂,聚合物单体和杀虫药剂等化合物的污染。随着加工食品和方便食品的增加和消费 Much of food and food is shipped after packaging. It is required that the package function to prevent the loss of weight and quality of the food caused by the bacteria, fungi and pests. Pest control is a major problem for dry foods and cereals. Good packaging should be able to provide the entire process of protection from the date of package to the time of unpacking to keep food and grains from pests. At the same time, it should be ensured that the food and grains in the package are not contaminated by the packaging material itself, as well as with the various additives, monomers and insecticides contained therein. With the increase and consumption of processed foods and convenience foods