Plastic Filament Drawing Metering Pump
The core function of adding a melt metering pump to a drawing machine lies in enhancing filament production uniformity and process stability through high-precision flow control and stable pressure output.
Specifically:
1. Precise flow control: The metering pump maintains melt flow rate within an extremely narrow tolerance range (e.g., ±0.5%), ensuring consistent filament diameter and preventing uneven thickness—critical for producing fine-diameter fibers.
2. Pressure stability: It provides constant pressure to the melt, preventing breakage or shape abnormalities caused by pressure fluctuations during high-speed drawing. This ensures continuity in the cooling and stretching stages.
3. Quality enhancement: Through precise regulation, it reduces defects like bubbles and breaks, improving filament surface smoothness and consistency. This meets the stringent requirements for synthetic fibers in high-end textiles.
Application Scenarios and Selection Criteria
Typical Applications
Plastic Filament Drawing: Produces fibers, monofilaments, and multifilaments from materials like PVC, PP, and PE, meeting demands for high-end fibers, films, pipes, and other products.
Pipe Extrusion: Works with single-screw or twin-screw extruders to manufacture large-diameter pipes, ensuring uniform wall thickness.
Sheet Forming: Enables continuous, stable extrusion of wide sheets, enhancing flatness and strength.
Key Selection Parameters
Flow Range: Select appropriate displacement based on production needs. For melt spinning filaments, metering pumps with flow rates of 0.3–3 cm³/r are commonly chosen.
Pressure Rating: Choose pressure-resistant grades according to melt viscosity and process requirements to ensure stable pump operation under high pressure.
Material Compatibility: Select pump body materials based on melt chemistry, such as corrosion-resistant stainless steel or specialty alloys, to prevent medium corrosion.
Viscosity Range: Choose pump types suitable for wide viscosity ranges, e.g., capable of handling melts from 100 Pa·s to 10,000 Pa·s.
The metering pump for plastic wire drawing machines is the core equipment ensuring process stability and product quality. Through high-precision metering, stable pressure output, and rapid response adjustments, it significantly enhances filament uniformity, reduces defect rates, and adapts to diverse production needs. Inquiries and purchases are welcome. BATTE Melt Pump Factory also offers customization based on specific requirements.
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071