Biaxially Oriented Polypropylene (BOPP) extrusion lines often face output fluctuations and inconsistent film thickness, which hinder production efficiency and product quality. To address these challenges, our engineering team implemented a targeted upgrade by integrating high-pressure melt pumps into an existing BOPP extrusion system, with a focus on stabilizing polymer flow and enhancing process control.
Prior to the upgrade, upstream extruder surges and uneven polymer delivery caused thickness variations of up to 8% in the final film, limiting line speed to 350 m/min and increasing material waste. The high-pressure melt pumps were installed between the extruder and the die head, serving as a precise volumetric metering device. These pumps neutralized pressure surges from the extruder, delivering a steady, uniform flow of molten polymer to the die.
Post-upgrade, the results were remarkable: thickness variations were reduced to less than 2%, and line speed was safely increased to 420 m/min, boosting overall output by 20%. The consistent polymer flow also minimized defects like edge waviness and pinholes, improving film quality and reducing material waste by 12%. This hardware upgrade not only optimized production efficiency but also demonstrated the value of superior pressure control in industrial extrusion processes.
In conclusion, integrating high-pressure melt pumps is a cost-effective solution for addressing output instability in BOPP extrusion. It balances increased line speed with consistent product quality, aligning with our commitment to engineering innovation and sustainable industrial efficiency.
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