400 kg/h Gravimetric Mixing Machine for Plastic Processing


The gravimetric mixing machine is an automatic batching and weighing system designed for plastic injection, extrusion, and blow molding processes. It accurately meters multiple raw materials according to preset weight ratios using an advanced PLC control system. With high-precision load cells and intelligent calibration algorithms, it ensures stable dosing accuracy within 0.2–0.5%, improving material consistency, reducing waste, and enhancing overall production efficiency in plastic manufacturing lines.

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Gravimetric Mixing Machine Product Introduction

The gravimetric mixing machine is an industrial automatic batching and weighing system used for precise proportioning of plastic raw materials. It is designed for multi-component material dosing in injection molding, extrusion, and hollow molding processes. The system operates through weight-based control, ensuring accurate ratio mixing of virgin materials, regrind, and masterbatch.

Built with stainless steel contact parts and a modular structure, it supports stable operation and easy integration into production lines. This equipment helps manufacturers improve material consistency, reduce manual errors, and optimize raw material usage. It is suitable for plastic product manufacturers seeking precise, automated, and efficient material management solutions.

Product Parameter Table

Mixing capacity 400 kg/h
Batch weight 8 kg
Main material mixing range 5~100%
Additive mixing range) 0.5~10%
Main hopper volume 45 L
Additive hopper volume 15 L
Mixing tank volume 18 L
Power supply 3Φ 400 V/50 Hz
Total power 0.55 kW
Compressed air 6~8 kgf/cm²
Max. Noise level <75 dB
H 2070 mm
W 800 mm
D 700 mm
Mobile tripod 760*750*580 mm
Net weight(machine installation) 140 kg
Net weight(floor installation) 165 kg

Main Features

  • Advanced PLC control system with touch screen interface ensures precise batching control and user-friendly operation.

  • High-accuracy weighing cell with automatic calibration algorithm maintains ratio deviation within 0.2%–0.5%.

  • Stainless steel material contact surfaces prevent contamination and ensure safe raw material handling.

  • Intelligent metering valve system supports both standard vertical valves and screw valves for low-percentage materials.

  • Modular detachable structure design allows easy cleaning, maintenance, and flexible installation.

  • Reliable electrical components ensure stable long-term performance in continuous industrial production environments.

Application Scenarios

  • Plastic injection molding production lines requiring precise masterbatch and additive proportioning.

  • Extrusion processing of pipes, sheets, films, and profiles with accurate material blending control.

  • Blow molding and hollow product manufacturing using multi-component raw material ratios.

  • Plastic recycling production lines integrating regrind materials with virgin resin.

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