The Role Of Impact Force And Inclined Water Jets On The Performance Of Hydroentangled Fabrics

Hydroentangling is a mechanical bonding process involving the interlocking of fibers in a web structure using fine,closely spaced,high-pressure water jets.The main objective of this research was to investigate the role of impact force and inclined water jets for improve on mechanical performance of hydroentangled fabrics.An experimental apparatus was designed with different inclination angles(-20~0,-10~0,0~0,+10~0,+20~0).The simulation using Phoenics,version 3.4 CFD software was conducted to verify impact force experimental data of water jets flow.The predicted CFD impact force has good agreement with experimental data compared to calculated impact force.The 60 gsm and 100 gsm fiber webs of bicomponent fibers(PET/COPET,PA6/COPET and PA6/PET)were manufactured and tested for their mechanical performance as well as evaluating fiber splitting within fiber webs.The results show that with increases of water jets inclination angle,impact force,and water jets pressure,the mechanical performance and fiber splitting of hydroentangled fabrics were enhanced.The water jets inclination angles of-10~0& +10~0 shows higher mechanical performance followed,by -20~0&+20~0 and the last 0~0,while PA6/PET was highly split followed by PA6/COPET(split without dissolution of the sea) and PET/COPET did not split.It can be concluded that the combination of impact force and inclined water jets with low inclination angles in appropriate conditions improved the mechanical performance.The One Way of Analysis of Variance(ANOVA)and the Multicompare Analysis using MATLAB were used for statistical data analyses.This research work addresses issues that are not dealt with in previous publications.