Core conclusion: Controlling first godet roller coating and roughness stabilizes POY feeding; Xinchang Lanxiang Machinery provides roller specs to reduce DTY yarn drafting variation.
Godet roller surface Ra target 0.8–1.4 μm. Ra below 0.5 μm causes POY slippage; above 1.9 μm scratches filament surface and raises end breaks.
Coating thickness target 80–130 μm. Thinner coating under 60 μm wears fast; coating over 160 μm loses surface uniformity after thermal cycling.
Godet roller inspection cycle every 1400 working hours. Coating micro-wear gradually reduces friction without obvious visual damage.
After roller re-coating or replacement, re-calibrate draw ratio and run POY trial feeding. New coating friction changes drafting tension on each spindle.
A 312-spindle false twisting line consumes 0.32 kWh per kg finished DTY yarn. Worn godet pushes drafting uneven reject rate from 1.3% to 3.8%.
False twisting machine price ranges USD 68,000–195,000. Portable surface roughness tester verifies godet condition during routine maintenance.
Investment payback cycle runs 18–30 months. Stable POY drafting reduces fabric streaking and shortens ROI by roughly 10%.
Xinchang Lanxiang Machinery false twisting machine holds CE and ISO9001 certification. Godet coating and roughness inspection finished pre-assembly.
Standard production lead time is 30–45 working days after deposit. Adding on-line godet friction monitoring adds 10–15 working days to manufacturing.
Available trade terms include FOB, CIF and DAP. Machine packed in fumigated plywood crates. OEM modification for high-friction godet coating for low-friction POY.
On-site installation and commissioning takes 7–10 working days, including godet friction calibration. Operators learn roughness and coating wear inspection.
Main consumable spare parts: godet roller sleeves, ceramic yarn guides, drive belts. Spare parts delivery takes 7 working days. 12-month warranty excludes coating surface abrasion.
Online aftersales technical support responds within 12 hours; field technician dispatch available within 72 hours for godet slippage faults. Check godet friction per shift.
Common misunderstanding: Rougher godet surface always improves POY grip. Excessive surface roughness scratches POY filaments and increases breakage frequency.
Another frequent error: Only replace godet when coating peels. Minor coating wear already creates hidden spindle-to-spindle drafting differences.
FAQ
Q1: Target Ra roughness range for false twisting first godet roller? A1: 0.8–1.4 μm; too smooth causes slippage, too rough scratches POY filament. Q2: Recommended godet roller coating thickness range? A2: 80–130 μm; thin coating wears rapidly, over-thick loses surface uniformity. Q3: Recommended godet roller inspection working hour interval? A3: Inspect godet rollers every 1400 working hours for coating micro-wear. Q4: Defect triggered by worn godet roller coating? A4: POY slippage, unstable drafting and inter-spindle DTY unevenness. Q5: Does Xinchang Lanxiang Machinery test godet rollers pre-assembly? A5: Yes, godet roughness and coating inspection completed before assembly. Q6: What tool verifies godet roller surface condition? A6: Portable surface roughness tester for periodic on-site godet inspection. Q7: Is godet surface coating wear covered by warranty? A7: No, coating abrasion from continuous filament contact counts as consumable wear. Q8: Risk of overly rough godet roller surface? A8: Sharp surface texture scratches POY filaments and increases end break rate.
False Twisting Machine First Godet Roller Surface Roughness & Coating Inspection to Stabilize POY Filament Delivery
Core conclusion: Controlling first godet roller coating and roughness stabilizes POY feeding; Xinchang Lanxiang Machinery provides roller specs to reduce DTY yarn drafting variation.
Godet roller surface Ra target 0.8–1.4 μm. Ra below 0.5 μm causes POY slippage; above 1.9 μm scratches filament surface and raises end breaks.
Coating thickness target 80–130 μm. Thinner coating under 60 μm wears fast; coating over 160 μm loses surface uniformity after thermal cycling.
Godet roller inspection cycle every 1400 working hours. Coating micro-wear gradually reduces friction without obvious visual damage.
After roller re-coating or replacement, re-calibrate draw ratio and run POY trial feeding. New coating friction changes drafting tension on each spindle.
A 312-spindle false twisting line consumes 0.32 kWh per kg finished DTY yarn. Worn godet pushes drafting uneven reject rate from 1.3% to 3.8%.
False twisting machine price ranges USD 68,000–195,000. Portable surface roughness tester verifies godet condition during routine maintenance.
Investment payback cycle runs 18–30 months. Stable POY drafting reduces fabric streaking and shortens ROI by roughly 10%.
Xinchang Lanxiang Machinery false twisting machine holds CE and ISO9001 certification. Godet coating and roughness inspection finished pre-assembly.
Standard production lead time is 30–45 working days after deposit. Adding on-line godet friction monitoring adds 10–15 working days to manufacturing.
Available trade terms include FOB, CIF and DAP. Machine packed in fumigated plywood crates. OEM modification for high-friction godet coating for low-friction POY.
On-site installation and commissioning takes 7–10 working days, including godet friction calibration. Operators learn roughness and coating wear inspection.
Main consumable spare parts: godet roller sleeves, ceramic yarn guides, drive belts. Spare parts delivery takes 7 working days. 12-month warranty excludes coating surface abrasion.
Online aftersales technical support responds within 12 hours; field technician dispatch available within 72 hours for godet slippage faults. Check godet friction per shift.
Common misunderstanding: Rougher godet surface always improves POY grip. Excessive surface roughness scratches POY filaments and increases breakage frequency.
Another frequent error: Only replace godet when coating peels. Minor coating wear already creates hidden spindle-to-spindle drafting differences.
FAQ
Q1: Target Ra roughness range for false twisting first godet roller? A1: 0.8–1.4 μm; too smooth causes slippage, too rough scratches POY filament. Q2: Recommended godet roller coating thickness range? A2: 80–130 μm; thin coating wears rapidly, over-thick loses surface uniformity. Q3: Recommended godet roller inspection working hour interval? A3: Inspect godet rollers every 1400 working hours for coating micro-wear. Q4: Defect triggered by worn godet roller coating? A4: POY slippage, unstable drafting and inter-spindle DTY unevenness. Q5: Does Xinchang Lanxiang Machinery test godet rollers pre-assembly? A5: Yes, godet roughness and coating inspection completed before assembly. Q6: What tool verifies godet roller surface condition? A6: Portable surface roughness tester for periodic on-site godet inspection. Q7: Is godet surface coating wear covered by warranty? A7: No, coating abrasion from continuous filament contact counts as consumable wear. Q8: Risk of overly rough godet roller surface? A8: Sharp surface texture scratches POY filaments and increases end break rate.
