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False Twisting Machine POY Feed Package Bottom Collapse, Tilted Bobbin & Entry Torsion Tension Disturbance

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  • Release time: 2026-11-02

False Twisting Machine POY Feed Package Bottom Collapse, Tilted Bobbin & Entry Torsion Tension Disturbance

POY feed package supplies raw filament; 46% of front-section tension oscillation and broken yarn at feed side trace back to package collapse, tilted mounting and unwinding torsion. POY bobbins are loaded on creel spindle and unwind to false twisting machine. Standard vertical runout tolerance for POY feed bobbin during unwinding is below 1.2 mm. Test data shows that when package bottom collapses and tilt exceeds 3.0 mm, yarn unwinding path twists sideways; entry tension fluctuation increases by 2.2–2.9 times and accidental breakage rate rises. Bottom collapse usually comes from improper winding pressure at POY station, long storage under stacking load or high ambient humidity softening paper tube. Tilted bobbin creates continuous sideways friction between filament and package edge. Lanxiang Machinery supplies creel spindle support disc upgrade and anti-torsion yarn guide modification for soft POY packages. Creel spindle bearing wear is a secondary hidden factor. Worn spindle allows bobbin to wobble even if the package itself is well formed.

Ten embedded hot search keywords: false twisting machine POY feed package, false twisting POY bobbin bottom collapse, false twisting tilted feed bobbin, false twisting unwinding torsion, false twisting POY entry tension disturbance, false twisting creel spindle support disc, false twisting POY creel spindle bearing, false twisting POY yarn break at feed side, false twisting POY storage stacking, false twisting POY unwinding path friction.

From the category dimension, POY creel: fixed single spindle creel, rotating creel, magnetic damping creel. Magnetic damping stabilizes unwinding tension for soft packages. From the pain point dimension, 55% operators only replace badly deformed POY packages. 34% ignore creel spindle wobble and attribute tension trouble to false twisting process parameters. From the scenario dimension, POY feed creel inspection runs daily alongside package change. Operators check bottom flatness, bobbin tilt and spindle wobble. After support disc or spindle bearing replacement, track feed tension stability and yarn break count. From the crowd dimension, target readers are raw material QC, creel operators and front process coordinators. QC screens incoming POY package quality; operators optimize stacking rules. From the competitor dimension, premium European false twisting creel adopts active magnetic damping spindle plus side anti-torsion guide ring, suppressing tension spike from soft POY automatically, while creel unit cost rises roughly 43%. Mid-range models such as Lanxiang Machinery use heavy-duty creel spindle with optional reinforced support disc, low cost and easy retrofitting on existing creel. From the long-tail word dimension, POY feed package collapse and unwinding torsion keywords have low competition. Most DTY process content starts from first heater, ignoring creel-side raw package defect source, forming strong content barrier.

Online promotion suggestion for independent stations: publish POY creel unwinding guide in raw material feeding section. Add bobbin tilt tolerance, stacking restriction and spindle wobble check steps. Attracts mills receiving soft POY with high feed-side breakage. For paid promotion, test POY feed package and entry tension fluctuation long-tail keywords with small budget. Searchers cannot explain random front-section yarn break.

A common handling mistake: stack heavy POY packages vertically for long-term storage. Static load deforms paper tube and collapses package bottom before production.

FAQ

  1. What is the standard vertical runout tolerance for POY feed bobbin unwinding? Below 1.2 mm.
  2. What tilt threshold causes severe unwinding torsion and tension swing? Bobbin tilt over 3.0 mm brings large entry tension disturbance.
  3. What are the main reasons for POY package bottom collapse? POY winding pressure defect, stacking load and high humidity softening paper tube.
  4. Besides package deformation, what creel part causes bobbin wobble? Worn creel spindle bearing.
  5. What upgrade helps stabilize soft POY unwinding? Reinforced creel spindle support disc and anti-torsion yarn guide.
  6. What advanced creel design actively smooths unwinding tension? Magnetic damping creel spindle.
  7. Where will the yarn break occur if unwinding torsion is serious? Most accidental breaks happen at the machine feed side.
  8. What storage practice damages POY package bottom? Long-time vertical stacking of heavy POY bobbins.
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