Production Optimization Strategy: System Improvement on Rotary Blow Film Machine to Improve Product Quality
Strategi Optimalisasi Produksi: Perbaikan Sistem pada Mesin Blow Film Rotari untuk Meningkatkan Kualitas Produk
DOI:
https://doi.org/10.21070/118s0251Keywords:
Production Optimization, Blow Film Machine, Preventive MaintenanceAbstract
Cooling Rotary is an important component of the Blow Film machine that functions to cool the plastic film after the extrusion process. The cold air from the blower is evenly distributed to ensure the quality, thickness, and characteristics of the plastic film produced. However, there are some common problems that can interfere with the performance of the machine, namely incompletely melted plastic and bumpy plastic surfaces. The problem of incompletely melted plastic is caused by improper temperature setting of the heating zone, damage to
the heater or thermocouple, and wear on the screw. In addition, substandard material quality, such as incorrect Melt Flow Index (MFI) or high moisture content, also affects the final result. Solutions include recalibrating the temperature in each heating zone, replacing defective components, and ensuring material quality through strict quality control. Meanwhile, wavy plastic surfaces usually result from unstable cooling air distribution, unbalanced nip roller pressure, or inappropriate process parameters such as take-up speed and blow-up ratio. Uneven cooling system or damage to the air ring and nip roller are the main causes. To resolve this, steps such as adjusting the air ring, periodically cleaning the rollers, and optimizing process parameters need to be taken. Repairs are made by shutting down the machine, closing the water valve, removing and cleaning the problem components, and ensuring tight connections using tools such as pipe wrenches, seal tape, and rust cleaning fluid. To prevent similar problems, preventive maintenance should be performed regularly, including calibration of process parameters, cleaning of critical components, and operator training. A systematic approach and consistent prevention are essential to maintain the quality of the plastic film produced
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