Theoretical Analysis of Melt Spinning and Application to Optimization of Spinning Condition

摘要

Two research topics with respect to theoretical analysis of melt spinning will be presented. One is concerned with the study on the air jet melt spinning for Poly(ethylene terephthalate) (PET). Numerical computations of the fundamental equations describing the air jet melt spinning system were done for various spinning conditions. Good correlation between theory and experiment were obtained for the spinning speed at the ejector and the final as-spun fiber diameter. Optimal spinning conditions for obtaining the as-spun fibers having aimed fiber diameters could be estimated. The other is concerned with the study on the melt spinning systems in which the air gap length should be considered as an important process parameter. Short air gap length was found to be effective for obtaining the super fibers such as Aramid fibers and the fine denier filaments of PET by the single component polymer spinning.