スリット型インターレーサの糸特性および空気流

抄録

For the purpose of obtaining a design guideline of interlacer producing a high number of tangles, the numbers of tangles of interlaced yarns produced by slit-type interlacers with various sizes were measured. Furthermore, on the basis of numerical simulation result of airflow pattern in interlacers producing either the high number of tangles or the low one, a size effect of interlacer on the number of tangles was considered. Results obtained are as follows. (1) Three interlacers with different combinations of slit height and nozzle distance produced the high number of tangles in this experiment. The three interlacers have nearly the same yarn passage area. (2) The airflow forms a twin vortex, which changes relative positions between filaments (or filament groups) and generates entanglements. The size of vortex generating the high number of tangles would depend on the yarn fineness. As the airflow velocity of vortex is greater, the higher number of tangles would be produced. (3) An interlacer with a large characteristic force corresponding to opening and tangling force produced the interlaced yarn with high number of tangles in this analysis.