Plastic manufacturers often face challenges such as inconsistent material ratios, wasted additives, and unstable product quality during injection molding or extrusion. A reliable Gravimetric Blender helps you achieve accurate material dosing, improve production stability, and reduce manual adjustment costs. Designed for plastic processing applications, NIASI’s double screw color granules volumetric dosers provide automatic proportional feeding for new materials, recycled materials, masterbatch, and additives.
With more than 15 years of experience since 2008, Dongguan NIASI Plastic Machine Co., Ltd. develops plastic auxiliary equipment including gravimetric blenders, central feeding systems, dehumidifying dryers, hopper loaders, and industrial cooling solutions. Its equipment supports industries such as automotive components, medical devices, wire and cable, food packaging, and plastic pipe manufacturing.
What Is a Gravimetric Blender Machine?
A Gravimetric Blender Machine is an automated material dosing system used in plastic production to accurately mix different raw materials according to preset ratios. Instead of relying on manual feeding, the machine controls material flow through a precision metering mechanism.
NIASI’s double screw color granules volumetric doser is designed for:
- Plastic pellets and granules feeding
- Masterbatch and additive dosing
- New and recycled material mixing
- Injection molding and extrusion production lines
- Continuous automated material supply
The system uses a precision DC brushless motor and a stainless steel 304 metering screw to deliver stable and controlled material output.
How NIASI Gravimetric Blender Improves Plastic Production
When plastic manufacturers process different materials, inaccurate feeding ratios can cause color differences, product defects, and material waste. NIASI’s Gravimetric Blender for Plastics solves these issues through digital control and precise dosing technology.
Key advantages include:
- High precision dosing: The digital microcomputer control system converts preset ratios into accurate motor speed adjustments.
- Automatic material management: The controller stores up to 50 sets of production data for easier formula management.
- Flexible compatibility: It supports injection molding machine signals and extrusion equipment signals, including 0-5V, 0-10V, 4-20mA, and frequency inputs.
- Easy maintenance: Modular assembly allows quick material replacement and convenient machine cleaning.
- Reliable operation: DC brushless motors provide low maintenance performance with voltage protection functions.
Double Screw Volumetric Doser Specifications
NIASI provides different models to meet various plastic processing requirements.
| Feature | Single Color Doser | Double Color Doser |
|---|---|---|
| Motor Power | 30W | 30W × 2 |
| Motor Speed | 3000 rpm | 3000 rpm |
| Tank Capacity | 12L | 12L × 2 |
| Screw Type | 12-24 | Dual screw configuration |
| Output Capacity | 0.1-50 kg/h | Based on material combination |
| Control System | Digital microcomputer control | Digital proportional control |
These configurations allow you to select suitable equipment according to production capacity, material type, and application requirements.
How the Plastic Granule Dosing Process Works
Using an automatic feeding system can simplify your production workflow. The typical operation process includes:
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Set material parameters
Enter the required addition ratio, feeding speed, and production parameters through the controller.
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Automatic calculation
The control system converts settings into motor speed commands.
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Precision material feeding
The stainless steel screw transports plastic granules, masterbatch, or additives at a controlled rate.
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Continuous production supply
Materials are delivered directly to injection molding machines or extrusion equipment.
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Monitor and adjust
Operators can manage stored formulas and adjust production conditions when needed.
Why Choose NIASI as Your Gravimetric Blender Supplier?
NIASI focuses on plastic raw material handling solutions and smart factory equipment. The company’s manufacturing capabilities include CNC machining equipment, laser cutting machines, hydraulic presses, powder coating systems, and quality inspection facilities.
NIASI follows strict production control procedures to ensure equipment reliability. The company has built long-term cooperation with global manufacturers in automotive, packaging, and industrial sectors.
Your benefits include:
- More than 15 years of plastic machinery manufacturing experience
- Professional R&D team covering mechanical, electrical, and automation engineering
- Complete plastic processing equipment solutions
- Customized equipment support for different production requirements
- Global distributor cooperation opportunities
Applications of Gravimetric Blender for Plastics
NIASI’s Precision Feeding System is widely used in:
- Automotive plastic parts production
- Medical plastic components
- Food packaging manufacturing
- Plastic pipe extrusion
- Wire and cable industries
- Blow molding applications
Whether you produce small batches or operate continuous production lines, accurate material dosing helps maintain consistent product performance.
FAQ
1. What materials can a Gravimetric Blender process?
A Gravimetric Blender can handle plastic pellets, masterbatch, additives, recycled materials, and other raw materials used in injection molding and extrusion.
2. Can NIASI Gravimetric Blender connect with injection molding machines?
Yes. The system supports multiple signal inputs, including dry contact, voltage signals, frequency signals, and digital inputs used by many plastic processing machines.
Conclusion
Choosing the right Gravimetric Blender allows you to improve plastic production accuracy, reduce material waste, and maintain stable product quality. With advanced control technology, flexible configurations, and professional manufacturing experience, NIASI provides reliable dosing solutions for injection molding and extrusion industries worldwide.
For plastic manufacturers looking for a dependable Gravimetric Blender Machine, NIASI offers customized equipment solutions designed around your production needs.
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Contact Dongguan NIASI Plastic Machine today to discuss your material dosing requirements and get a customized gravimetric blender solution for your plastic processing line.
