The SHR-300/600 PVC High Speed Mixer is specially designed for mixing PVC resin, calcium carbonate, stabilizers and other additives before extrusion production. The machine combines high-speed hot mixing and cooling mixing into one automatic system, helping improve material uniformity and extrusion stability. It is widely used in PVC pipe production lines, PVC conduit pipe manufacturing and PVC profile extrusion plants. With automatic temperature control, water cooling and inverter control, the machine provides stable operation and efficient mixing performance.
PVC High Speed Mixer 300/600 Hot and Cold Mixing Unit
Built for Stable PVC Powder Mixing
The SHR-300/600 high speed mixer is mainly used for preparing PVC raw materials before extrusion production. It is suitable for mixing PVC resin, calcium carbonate, stabilizers and other additives used in PVC pipe manufacturing.
In many PVC factories, unstable mixing is one of the main reasons for extrusion problems,
such as pipe surface marks,
uneven plasticizing
or fluctuating output.
https://youtu.be/C4p-lka_naQ
A stable mixing process helps improve the entire production line.
This hot and cold mixer unit combines high-speed heating mixing and cooling mixing into one system. The material is heated and mixed evenly in the hot mixer, then quickly cooled in the cold mixer before entering the extrusion stage.The machine is widely used in PVC pipe factories, conduit pipe production, PVC profile extrusion and other plastic powder mixing applications.
Why Hot and Cold Mixing Matters in PVC Production?
PVC powder cannot be processed directly after simple blending. During production, stabilizers, calcium carbonate and lubricants must be distributed evenly inside the resin.
If the mixing temperature is unstable, it may lead to:
Poor extrusion stability
Uneven pipe surface
Material agglomeration
Higher scrap ratio
Screw feeding fluctuation
The SHR-300/600 mixer is designed to solve these problems through controlled heating and rapid cooling.
The hot mixer generates friction heat through high-speed blades while electrical heating assists temperature increase. After the material reaches the required temperature, it is discharged into the cooling mixer automatically.
The cold mixer then reduces the material temperature quickly through water cooling, helping maintain stable material performance before extrusion.
Designed for Continuous PVC Pipe Production
This PVC high speed mixer is commonly matched with:
PVC pipe extrusion lines
PVC conduit pipe lines
PVC profile production lines
PVC ceiling panel extrusion machines
For customers producing large quantities of PVC pipes every day, stable material preparation is extremely important. Uneven mixing often causes more problems later in production than the extrusion machine itself.
The 300/600 model is suitable for medium-capacity PVC production plants and is widely used in developing markets where stable operation and easy maintenance are important.
Main Features of SHR-300/600 PVC High Speed Mixer
Stainless Steel Mixing Tank
The inner wall of the mixing tank is made of 1Cr18Ni9Ti stainless steel.
This material provides:
Better corrosion resistance
Longer service life
Smooth internal surface
Reduced material sticking
Easier cleaning after production
For PVC powder mixing, anti-sticking performance is important because high-temperature PVC formulations can easily attach to rough surfaces.
Three High-Speed Mixing Blades
The machine adopts three mixing blades made of 3Cr13Ni9Ti material.
The blade structure helps improve:
Mixing uniformity
Heating efficiency
Powder circulation
Additive dispersion
Stable blade operation is especially important for PVC formulations with high calcium carbonate content.
Frequency Inverter Control
The mixer uses inverter control for more stable operation.
Compared with ordinary control systems, inverter control provides:
Smoother motor startup
Better speed adjustment
Reduced power fluctuation
Lower mechanical shock
More stable mixing process
This is especially useful for factories running long production hours every day.
Fast Mixing Cycle
The standard mixing cycle is around 8–10 minutes depending on the formulation.
Efficient mixing helps improve overall production capacity and reduces waiting time between batches.
Automatic Temperature Control
PVC mixing temperature directly affects extrusion quality.
The machine adopts electronic automatic temperature control to maintain stable mixing conditions and reduce overheating risk.
For PVC pipe manufacturers, stable temperature control helps improve extrusion consistency and pipe quality.
Water Cooling System
After hot mixing, the material enters the cold mixer automatically.
The water cooling system helps:
Reduce material temperature rapidly
Prevent powder agglomeration
Improve feeding stability
Prepare material for extrusion
Rapid cooling is especially important in hot-climate regions such as the Middle East and Africa.
Technical Parameters
| Item | Specification |
|---|---|
| Model | SHR-300/600 |
| Hot Mixer Volume | 300L |
| Cold Mixer Volume | 600L |
| Effective Hot Mixing Volume | 240L |
| Effective Cold Mixing Volume | 480L |
| Mixing Blade Quantity | 3 Pieces |
| Blade Material | 3Cr13Ni9Ti |
| Tank Material | 1Cr18Ni9Ti Stainless Steel |
| Heating Method | Electrical Heating |
| Cooling Method | Water Cooling |
| Temperature Control | Electronic Automatic Control |
| Inverter Motor Power | 55KW |
| Cooling Motor Power | 7.5KW |
| Mixing Time | 8–10 Minutes |
| Unloading Method | Pneumatic Unloading |
Common Materials Used in PVC Mixing
The mixer can be used for blending:
PVC resin powder
Calcium carbonate
PVC stabilizers
Lubricants
Processing aids
Color additives
Chemical modifiers
Frequently Asked Questions
What is the function of a PVC high speed mixer?
A PVC high speed mixer is used to heat and mix PVC resin together with additives before extrusion production. Stable mixing helps improve final product quality.
Why does PVC material need cooling after hot mixing?
After hot mixing, the material temperature is relatively high. Rapid cooling helps prevent agglomeration and keeps the powder suitable for extrusion feeding.
Is the SHR-300/600 mixer suitable for PVC pipe production?
Yes. This model is widely used in PVC pipe and conduit pipe manufacturing plants.
What kind of cooling system does the machine use?
The cold mixer uses a water cooling system to reduce material temperature efficiently.
Can the mixer work with high calcium carbonate formulations?
Yes. The three-blade mixing structure provides stable powder circulation and is suitable for common PVC formulations with calcium carbonate.
Which markets commonly use this machine?
This model is widely exported to customers in Africa, the Middle East and Southeast Asia due to its stable operation and practical maintenance structure.
Related PVC Auxiliary Machines
PVC Pulverizer Machine
PVC Crusher Machine
PVC Pipe Extrusion Line
PVC Pipe Belling Machine
PVC Automatic Feeding System
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