Melt Pumps and Screen Changers for Transparent Nylon Pelletiz
In transparent nylon pelletizing production, melt pumps and screen changers form the core equipment combination that ensures product quality and production efficiency. Melt pumps enhance pellet uniformity through pressure stabilization, uniform flow, and mixing, while screen changers guarantee melt cleanliness by efficiently filtering impurities. Their coordinated operation significantly reduces defect rates and enables continuous production.
I. Melt Pump: The “Pressure Stabilizer” for Transparent Nylon Pelletizing
1. Core Functions
Pressure Stabilization & Uniform Flow: Extruder screw feeding often causes pulsation fluctuations, leading to inconsistent pellet sizes. The melt pump precisely controls melt pressure (±1% tolerance) through gear-meshing shear and conveying action, eliminating flow fluctuations to ensure stable extrusion speed and produce smooth, uniform pellets.
Uniform Mixing: Nylon melt exhibits high viscosity, prone to uneven plasticization. The pump's gear structure enhances melt mixing, ensuring homogeneous texture while reducing bubbles and impurities—lowering defect rates by over 50%.
Energy Savings: Reduces extruder load by 20%-30%, lowering energy consumption while enabling 24/7 continuous pelletizing for significantly increased output.
2. Application Scenarios
PA6/PA66 Pelletizing: Stabilizes melt pressure, eliminates extrusion fluctuations, and enhances pellet transparency.
Highly Filled Materials: Maintains melt flowability in glass-fiber reinforced nylon to prevent screen clogging.
II. Screen Changer: The “Impurity Eliminator” for Transparent Nylon Pelletizing
1. Core Function
High-Efficiency Filtration: Intercepts impurities like metal shavings, dust, and unmelted particles to prevent black spots and broken filaments, ensuring product transparency and sealing integrity.
Continuous Production: Hydraulic automatic screen changers complete filter changes within 2 seconds without shutdown, minimizing scrap loss and reducing production costs.
Pressure Stability: Maintains constant material flow pressure during screen changes to prevent film or pipe ruptures, guaranteeing uninterrupted production.
2. Application Scenarios
Recycled Plastic Processing: Filters impurities from recycled materials to enhance pellet quality.
Precision Product Manufacturing: Ensures zero-tolerance for contaminants in applications like food-grade films and medical catheters.
Chemical Fiber/Rubber Processing: Prevents issues like thread breakage and scorched material, safeguarding product elasticity and mechanical properties.
III. Synergistic Advantages of Melt Pump and Screen Changer
Quality Enhancement: The melt pump maintains stable pressure and uniform flow, while the screen changer filters impurities, jointly ensuring pellet transparency, roundness, and surface smoothness.
Efficiency Optimization: Continuous production minimizes downtime, boosting output by over 20%.
Cost Reduction: Reduces scrap loss and energy consumption, lowering overall production costs by 15%-20%.
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