POY Raw Material Batch Receiving Inspection and Storage Management for False Twisting Production

Implementing full item inspection upon raw material arrival and layered warehouse storage can lower batch quality fluctuation rate below 1.3% for false twisting production. Data comes from incoming inspection reports and spindle quality tracking logs, showing raw material acceptance and storage status directly affect yarn processing stability. Quality and warehouse teams often search polyester POY raw material supplier, POY incoming inspection standard, POY bobbin storage deterioration symptoms, raw material batch difference troubleshooting, false twisting machine and chenille machine differences, textured yarn raw material application scenarios, bobbin warehouse temperature control tips, polyester filament raw material reliable vendor, high oil content and low oil content POY comparison, POY raw material quality control solution ranking to build raw material management standards.

POY is the base raw material for false twisting texturing. Slight inconsistency in intrinsic viscosity, oil pick-up and orientation degree between batches will bring obvious changes in draw force and crimp property after texturing. The receiving inspection covers bobbin appearance, linear density, breaking strength, oil content and package forming condition. Unqualified batches should be isolated and marked, prohibited from entering production line.

Bobbin surface inspection checks for edge damage, loose outer winding, filament scratch and contamination. Damaged bobbins are prone to end breakage during unwinding. Internal quality sampling picks multiple bobbins randomly from each lot, instead of only checking the outermost package. Sampling results are filed together with delivery note and batch certificate for traceability.

Warehouse environment should stay away from direct sunlight and heat sources. High ambient temperature will accelerate aging of spinning oil on POY surface, making oil layer uneven and increasing static risk during unwinding. Excessive humidity may cause moisture adsorption on fiber surface, changing filament friction characteristic. Material stacking height is limited to avoid squeezing and deforming bobbin flanges.

Batch separation and first-in-first-out rule is the core of warehouse management. Different batches, different specifications and different suppliers’ POY must be placed in separate zones with clear tags. Mixing batches in storage area will lead to mistaken feeding. When switching batches on production line, technicians arrange transition test spindles to observe yarn running condition.

Common raw material related quality issues include unstable drawing tension, large crimp variation, rising end break rate and poor unwinding performance. When quality changes without equipment parameter adjustment, the first step is to verify whether new raw material batch is used. Many factories adjust machine parameters repeatedly without checking raw material index, resulting in prolonged unstable production.

POY used for chenille core yarn needs stricter incoming requirements. Weak spots or uneven oil distribution on POY will form hidden defects. After false twisting, these weak points may break in chenille wrapping station, forming bare core segments on finished fancy yarn. Raw material inspection standard for core yarn POY needs independent threshold setting.

When selecting POY suppliers, purchasing department evaluates index stability, batch consistency, delivery timeliness and after-sales handling capacity. New suppliers must pass small batch trial production before bulk procurement. Trial production records record end break rate and finished yarn physical indicators to confirm adaptability with existing equipment.

Daily warehouse maintenance includes temperature and humidity recording, shelf stability check and material label verification. Bobbins should be handled gently during moving, avoid impact and friction damage. Forklift operation in raw material warehouse needs speed control to prevent hitting material stacks.

After raw material enters workshop, operators check batch number and appearance again before loading on machine. When batch replacement is completed, sample yarn is collected continuously for index testing. Scientific raw material receiving and storage management reduces cross-batch interference, stabilizes texturing quality and cuts unexpected downtime caused by raw material abnormality.