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2 x 50cc Metering Pumps for Stable Melt Flow – PP Strapping Line
2 x 50cc Metering Pumps for Stable Melt Flow – PP Strapping Line
Specifications
Brand Name :
CHUQI
Model Number :
CQ-SPP120-6
Place of Origin :
CHINA
MOQ :
1SET
Price :
USD/RMB
Supply Ability :
10SETS
Delivery Time :
60DAYS
Packaging Details :
WOODEN BOX
Quantity :
2 units
Displacement :
50cc
Drive power :
3KW ×2
Function :
Pressure/flow stabilization
Pressure fluctuation :
≤±1%
Temperature control :
Independent heating
Effect :
Dimensional consistency ≤±0.05mm
Reliability :
Redundant design
Description
2 x 50cc Metering Pumps for Stable Melt Flow – PP Strapping Line
Product Overview

Melt pressure stability is the core guarantee for dimensional uniformity of extruded products. This production line is equipped with two high-precision metering pumps (50cc) between the extruder and the die, each driven by a 3KW motor. The metering pumps smooth out pressure fluctuations caused by screw rotation through forced, pulse-free gear output, ensuring constant melt flow and stable pressure into the 1-out-6 die.

The dual pump configuration distributes melt more evenly to the 6 flow channels, reducing the risk of uneven distribution from a single pump outlet. This design significantly improves dimensional consistency among the 6 strands and along the product length, controlling width and thickness tolerances stably within ±0.05mm. It is a key technology for achieving high-quality, high-uniformity products.

Technical Specifications
Parameter Value/Description
Number of metering pumps 2 units
Displacement per pump 50 cc/rev
Drive motor power 3KW * 2 units
Working medium PP melt
Temperature control Independent heating, linked with extruder temp. control
Pressure fluctuation suppression Melt pressure fluctuation ≤±1%
Applicable extruder φ120mm single screw
Key Features & Benefits
  • Dual pump configuration: 2 x 50cc metering pumps for uniform melt distribution
  • Pressure/flow stabilization: Eliminates screw pulsation, pressure fluctuation ≤±1%
  • Independent drive: Each pump driven by 3KW servo/inverter motor
  • High precision: Precision ground gears, high volumetric efficiency
  • Heating: Pump bodies independently heated to prevent melt solidification
  • Reduced dimensional variation: Stable feed leads to more uniform thickness/width
  • Improved consistency: Minimizes differences among 6 strands
  • Reduced scrap: Fewer thickness deviations from pressure fluctuations
  • Redundancy: One pump can maintain temporary production (reduced speed) if the other fails
  • High pressure capability: Can build higher backpressure for high-viscosity or modified materials
Frequently Asked Questions
Q: Why two metering pumps instead of one?
A: Two pumps in parallel distribute melt more evenly to the 6 channels of the 1-out-6 die. Each pump handles part of the channels, reducing the risk of uneven distribution from a single pump outlet, and provides redundancy for higher reliability.
Q: Do metering pumps increase melt pressure? Do they affect the extruder?
A: Metering pumps do create some backpressure, but they are active conveying devices, not resistance elements. With proper sizing, the pump inlet pressure remains stable, imposing no additional load on the extruder. Instead, they isolate screw fluctuations, making the extruder operate more smoothly.
Q: Do metering pumps need separate heating? How is temperature controlled?
A: Yes. The pump bodies have independent heaters, and temperature is controlled in coordination with the extruder die head temperature to prevent melt from cooling and solidifying inside the pump. Control accuracy is also ±1°C.
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2 x 50cc Metering Pumps for Stable Melt Flow – PP Strapping Line

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Product Detail
Brand Name :
CHUQI
Model Number :
CQ-SPP120-6
Place of Origin :
CHINA
MOQ :
1SET
Price :
USD/RMB
Supply Ability :
10SETS
Contact Supplier
2 x 50cc Metering Pumps for Stable Melt Flow – PP Strapping Line

Jiaxing Chuanqi Machinery Equipment Co., Ltd.

Verified Supplier
3 Years
zhejiang, jiaxing
Since 2012
Business Type :
Manufacturer
Main Products :
PET Strap Winder, PP Strap Winder, Paper Strapping Production Line
Total Annual :
5000000-8000000
Employee Number :
50~60
Certification Level :
Verified Supplier
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