美国H.W.Andersan生产公司制造出一种气体杀菌器,能够对六种不同类型或不同规格的单个包装袋进行杀菌。该装置抽出装有产品的包装袋里的空气,再注入一定量的杀菌剂(环氧乙烷和氟里昂的不可燃混合物),然后热封袋口。封好的袋子放在一个温暖(约90°F)的房间里,一般经过12个小时杀菌即完成。环氧乙烷气体从袋中扩散出去的速度取决于袋材的结构。扩散过程结束以后,包装袋内部变成真空。 The American H.W. Andersan Manufacturing Company manufactures a gas sterilizer capable of sterilizing individual packs of six different types or sizes. The unit pulls out the air from the product package, injects a certain amount of bactericide (a non-flammable mixture of ethylene oxide and freon), and heats the bag. The sealed bag is placed in a warm (about 90 ° F) room, usually after 12 hours of sterilization. The rate at which ethylene oxide gas diffuses out of the bag depends on the structure of the bag. After the diffusion process is over, the inside of the bag becomes a vacuum.