The Effect of Texturising speed on the properties of Air-Jet Textured type Bulk Yarn,Produced by Unconventional Method

摘要

Favorable air jet textured type bulk yarn unconventionally has been produced on a prototype, a purpose-built single-head texturising machine without use of compressed air. From the results of the pilot trials it has been confirmed that the product so obtained possesses favorable quality characteristics of air jet textured yarn. To identify dynamics of the process, effect of various process, machine and material parameters on the performance of the unconventional textured yarn need to be worth investigated. This paper represents the results of the experimentation conducted on two different parent yarns on the laboratory model by keeping various process variables constant except texturising speed. This avoids complexity of data and facilitates in identifying the trend in more pronounce way.rnProportionate rise in % Bulk and Linear density for the selected range of over feed confirms the process dynamics, however both the parameters are more influenced by % overfeed rather than texturising speed. With the increase in texturising speed, better loop formation and loop frequency, maximum declination of tensile properties as well as increase in instability value of textured yarn have been recorded in the plateau region, supports the phenomenon that better texturising takes place during the plateau region. However span and amplitude of the plateau region is mainly influenced by the basic characteristics of the parent yarn. For the laboratory module of the unconventional texturising method the economy of the product or process has not been discussed here.