随着科学的不断进步,塑料桶已步入千家万户。许多家庭用轻便不碎的塑料桶代替了铁桶、玻璃瓶、陶瓷罐等盛装食油。目前,塑料有数百种,生产应用较多的也有60多种。用于食品包装的主要有三种:聚氯乙烯、聚苯乙烯、聚乙烯。但用它装盛油脂,则会污染食品对人体有害。如聚苯乙烯塑料本身属低毒,但是它 With the continuous progress of science, plastic buckets have entered millions of households. Many families use light, unbreakable plastic barrels instead of drums, glass bottles, ceramic cans and other cooking oil. At present, there are hundreds of plastics, there are more than 60 kinds of production and application. There are three main types of food packaging: polyvinyl chloride, polystyrene, polyethylene. But use it to hold oil, it will pollute the food harmful to humans. Such as polystyrene plastic itself is low toxicity, but it