Through comparing with the technology from tow to top of normal fibre,the production technology of high shrinkage top is discussed' The result shows that the technical conditions of multi zone stretch breaking machine are important to the shrinkage in which process speed and heater plates play are the mos
分析了腈纶高缩纤维的特点，通过与常规纤维制条工艺比较，对高缩毛条生产工艺进行了探讨。
One is to make the polyvinyl formal high acetalation, the other is to modify its properties by oxidizing polyvinyl alcohol and rocondense formaldehyde.
本文主要分析了聚乙烯醇缩甲醛胶耐寒性差的原因,在此基础上提出了解决耐寒性问题的两种方法,其一是高缩醛化聚乙烯醇缩甲醛,另一种是聚乙烯醇氧化改性再缩甲醛,并对这两种生产工艺所生产的胶水的性能和其用途等进行了探讨。