What Is Filler Masterbatch?
Simply put, for example: PP/PE+70-85% CaCo3 powder+additives.
This saves more than 70% of the amount of PP/PE added, while maintaining the original rigidity, reducing shrinkage, and increasing specific gravity. This is one of the most common filling masterbatches.
Composition Of Filler Masterbatch
The filling masterbatch mainly consists of three parts:
Fillers: inorganic fillers such as calcium carbonate, talc powder, and barium sulfate, with calcium carbonate accounting for over 80% of the total.
Carrier resin: usually 15%- 30%; common ones include polypropylene and polyethylene. Ensuring that the filler can be uniformly dispersed in the matrix resin.
Additives, such as white oil, paraffin wax, zinc stearate, etc., can improve the flowability of masterbatch processing. Beneficial for the more uniform dispersion of the masterbatch in the matrix resin, improving the adhesion and stability between the filler and the carrier resin.
Production Process Of Filling Masterbatch
Technologically, both internal and external lubricating agents can perfectly assist in the diffusion between powders.
Hardware-wise: High-speed mixer effectively wraps powders and additives. The sequence combination of screw elements makes dispersion and kneading more uniform and efficient.
Equipment selection:
1: Kneader+ Bucket conveyor + Conical twin screw force feeder + Twin-screw extruder+ Water ring unit + Packaging system
2: Semi-automatic weighing and feeding system + High-speed mixer + Horizontal mixer + Twin-screw extruder + Water ring unit + Packaging system
3: Fully automatic weighing and feeding system + High-speed mixer + Horizontal mixer + Three screw extruder + Water ring unit + Packaging system
Triple Screw Extruder Parameters
| Type | L/D | Main Power(kw) | Screw Diameter (mm) | Screw speed（rpm） | Output(kg/h) |
|---|---|---|---|---|---|
| MTR36 | 44~48:1 | 30 | 35.6 | 600 | 100~250 |
| MTR52 | 44~64:1 | 90 | 51.4 | 600 | 300~650 |
| MTR65 | 44~64:1 | 132 | 62.4 | 600 | 650~1350 |
| MTR75 | 44~64:1 | 250 | 71 | 600 | 1500~2500 |
| MTR95 | 44~64:1 | 350 | 93 | 600 | 1600~3000 |
Reasonable addition of filler masterbatch can enhance the rigidity of plastic products, reduce the shrinkage rate, increase the specific gravity, and improve the dimensional stability and creep resistance of the products.
Provide mature formulas, extrusion processes, extrusion equipment, and installation training. You don’t need any experience; leave the complex process to us for the smooth completion of the filler masterbatch project.