摘要
采用表征值方法，根据等压线平行于模唇的流动模式，并考虑歧管斜率的影响，对衣架式口模圆形截面歧管系统的设计公式进行了改进，不但使口模结构设计与材料的性能与流率无关，而且修正了以前文献中对歧管斜率影响的忽略而造成的流率分配的误差，从而使流动均匀性指数提高到１。
Based on the method of
representative values and the flow model of isobars parallel to the die orifice,including
the effects of the sloped manifold,design of coathanger type sheet dies was improved
in this paper,making the design of the die independent to flow rate and viscosity of the
polymer.The error of previous derivation which resulted in a reduced flow rate at the
outer edge of the distribution system was corrected,and index of flow uniformity
increased to 1.The equivalency of two flow models was also provided.
出处
《塑料工业》
CAS
CSCD
北大核心
1999年第4期20-22,共3页
China Plastics Industry
基金
国家自然科学基金
