Quantifying Anti Friction Lubricant Protection Limits for Elastane Cores under High Drag Jet Processing
Sustaining a 1.8 percent ester lubricant film on elastane cores prevents elastomeric rupture when jet nozzle pressure exceeds 2.2 bar.
Tension Breakdown
Structural Failure
Sudden and uncontrolled loss of mechanical tension in a yarn line during high-speed spinning, warping, or knitting operations represents a major cause of machine stoppages and fabric defects. When tension breakdown occurs, the loose yarn can snarl, wrap around rollers, or cause needle damage. This issue is managed by using automatic tension control systems.
Warping Operations
High speed warping machines wind thousands of yarn ends from a creel onto a single warp beam. A tension breakdown in even one yarn end can cause it to become loose and break, halting the entire warping process. This downtime reduces mill productivity and can introduce yarn defects into the weaving loom.
Fabric Defects
In knitting mills, consistent yarn tension is necessary to maintain a uniform loop size and fabric weight. If a tension breakdown occurs, the resulting fabric will have loose courses, holes, or visible lines that reduce its commercial value. Maintaining stable tension ensures that the finished fabric meets density specifications.
Remediation Methods
Modern textile machines are equipped with electronic yarn catchers and tension sensors that detect fluctuations. Upon detecting a tension breakdown, these systems automatically stop the machine and signal the operator to repair the broken yarn. This rapid response prevents larger defects and protects the machinery from damage.