Improvements to the wet spinning of flax: Part Ⅰ - the effect of two sets of feed rollers on the physical characteristics of wet spun linen yarns

摘要

This paper investigates the influence of the two sets of feed rollers prior to roller drafting on the physical properties of wet spun linen yarns, such as tensile properties and yarn regularity. The effect of using either a single or double set of feed rollers on the fibre fineness distribution of bleached rove was quantified using the Sirolan™ Laserscan system and reported in terms of mean fibre fineness and percentage of fibre having a diameter above 30.5 microns. Comparative spinning trials using either one or two sets of in-line feed rollers were undertaken with several batches of bleached rove. The effect of spinning parameters on tensile and regularity characteristics of the spun yarns are reported and discussed. The effect of open reach as control parameter in double feed roller spinning was also investigated. Wet spun linen yarns produced via the double crushing of bleached rove with two sets of consecutive feed rollers have a higher mean tenacity than the traditional single roller feed system.