篷布为铁路运输工作中的主要工具之一,1977年以前铁路用棉帆布做篷布,每年耗精棉400万斤左右。为了节省棉花,铁道部科学研究院金属化学研究所研制了维纶涂塑篷布。为确定维纶涂塑篷布在遮盖粮食和其它食品方面是否可能引起污染以及人们长期接触能否有害身体健康,我们于1982年下半年对79、81型维纶涂塑篷布进行了急性毒性实 Tarpaulin railway transport work is one of the major tools in 1977 before the railway with tarpaulin canvas, cotton consumption of about 4000000 kilograms each year. In order to save cotton, the Institute of Metal Chemistry, Ministry of Railways Research Institute developed vinylon tarpaulin. To determine whether polyvinylidene fluoride tarpaulin is likely to cause pollution in covering foodstuffs and other food products and whether long-term human exposure can be detrimental to health, we conducted an acute toxicity test on 79,81 vinylon-coated tarps in the second half of 1982