用塑材包装食品,应考虑到可能发生的污染问题。根据日本包装技术协会的资料,自1964～1974年,包装材料的生产额(以金额计)增长了4.4倍,其中纸和板纸容器约占一半,但近年来其比例有所下降,而塑料与金属容器却在稳步地增长。据1971年的资料,包装材料用于食品的占49.5%。另据日本氯乙烯食品卫生协会1974年的资料统计,生产的氯乙烯用于食品方面的为17,530吨,约占总数的82%。在整个包装用塑料中,约有70%用于食 Plastic packaging materials, should take into account possible pollution problems. According to the Japan Packaging Technology Association, packaging production (in terms of amount) increased 4.4 times from 1964 to 1974, with paper and board containers accounting for about half of the total, but the proportion has dropped in recent years while plastic And metal containers are steadily growing. According to 1971 data, packaging materials for food accounted for 49.5%. According to the Japan Vinyl Chloride Association of Food Hygiene in 1974 statistics, the production of vinyl chloride for food 17,530 tons, accounting for 82% of the total. About 70% of the plastic used in packaging is for food