一、简介美国市场对卫生涂料的需求量相当大,预料1980年用于三片罐的卫生涂料将达到420万加仑。用于拉伸无锡铁皮(TFS)和铝罐的卫生内涂料几乎二倍于以上数字。卫生涂料使用于食品罐的内涂层,以起到保护和装饰的目的。这些搪瓷无毒、无臭、无味,能防止产品同容器之间内在的反应,它们通常符合以下某一种类,即透明含油松脂,着色含油松脂或环氧酚醛树脂。这些涂料均是有机的,并已广泛用于食品容器 I. INTRODUCTION The demand for sanitary coatings in the U.S. market is quite large. It is expected that the sanitary coating for three-piece cans will reach 4.2 million gallons in 1980. Sanitary paint used to stretch TFS and aluminum cans is almost double that figure. Hygienic coatings are used in the inner coating of food cans for protection and decoration purposes. These enamels are non-toxic, odorless and tasteless, and prevent the product from reacting with the container. They usually meet one of the following categories: clear oil-based rosin, pigmented oil-based rosin or epoxy novolak. These coatings are organic and have been widely used in food containers