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.
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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.