The BOPP film extrusion melt pump plays a pivotal role in the plastic extrusion industry, particularly during the production process of BOPP (Biaxially Oriented Polypropylene) film. Below is a detailed analysis of the BOPP film extrusion melt pump:
I. Definition and Function
The BOPP film extrusion melt pump is a specialized device designed for the transportation, pressurization, and metering of high-temperature, high-viscosity polymer melts. On the BOPP film production line, it primarily functions to pressurize and stabilize the high-temperature plastic melt coming from the extruder, delivering it to the extruder head at a stable flow rate to ensure uniform quality and thickness of the film.
II. Key Advantages
Stable Pressure: The BOPP film extrusion melt pump stabilizes melt pressure, reducing pressure fluctuations, thereby enhancing extrusion process stability and product quality.
Increased Production: By pressurizing and stabilizing the flow rate, the melt pump enables increased extrusion output, boosting overall production line efficiency.
Energy Saving and Cost Reduction: The use of the melt pump reduces the extruder's load, conserves energy, and decreases production costs.
Ease of Control: The melt pump achieves near-linear flow output, facilitating precise control during the production process.
III. Application Scope
The BOPP film extrusion melt pump is widely utilized in the plastic extrusion industry, particularly during the production of films, pipes, sheets, and plates. With the development of the machinery industry, melt pumps have gradually gained recognition and adoption by industry professionals in the domestic market.
IV.Technical Parameters
The technical parameters of the BOPP film extrusion melt pump encompass various aspects, including:
Specifications and Models: Typically expressed as the displacement per revolution, measured in cc (cubic centimeters), with a wide range of specifications available.
Delivery Capacity: Directly correlated to the specifications and model, further adjustable by altering the pump's rotation speed.
Pressure Range: Output pressure can reach 0 to 40MPa (or even higher), with suction pressure encompassing vacuum to a certain positive pressure range.
Temperature Range: Operating temperature can reach ≤400°C (or ≤350°C according to some sources), while cleaning temperature is even higher.
Viscosity Range: Capable of handling media viscosities ranging from 1 to 40,000 Pa·s, accommodating a wide variety of polymer melts from low to high viscosity.
The BOPP film extrusion melt pump is a crucial component in the plastic extrusion industry, leveraging its advantages of stable pressure, increased production, energy efficiency, and ease of control to play a pivotal role in the BOPP film production process. When selecting and utilizing a melt pump, it is essential to consider the specific application scenarios and requirements comprehensively.
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