PVC High Speed Mixer Machine

+25% Output Efficlency

-15% Energy Consumption

99.6% Stable Operation Rate

Why our machinery stands out

Rapid Friction Heating: High-speed friction blades rapidly heat and compound PVC resin with additives for perfect homogenization.
Instant Water Cooling: The oversized water-cooled jacket quickly drops material temperatures to prevent caking and thermal degradation.
Heavy-Duty Durability: The entire interior is constructed from heavily polished SUS304 stainless steel to resist abrasive wear and corrosion.
Smart Automation: Fully automated PLC controls seamlessly manage heating temperatures, cooling cycles, and pneumatic discharging.

The MIDTECH Heating and Cooling High-Speed Mixer Unit (SRL-Z / SRL-W Series) is an essential preparatory compounding system for any PVC extrusion or injection factory. It is expertly designed to dry, blend, and plasticize PVC powder with calcium carbonate fillers, stabilizers, plasticizers, and colorants.

Parameter

SRL-Z	Heat/Cool	Heat/Cool	Heat/Cool	Heat/Cool	Heat/Cool
Total volume (L)	100/200	200/500	300/600	500/1250	800/1600
Effective capacity (L)	65/130	150/320	225/380	330/750	600/1050
Stirring speed (RPM)	650/1300/200	475/950/130	475/950/100	430/860/70	370/740/50
Mixing time (Min.)	8-12	8-12	8-12	8-12	8-12
Motor power (KW)	14/22/7.5	30/42/11	40/55/11	55/75/15	83/110/22
Overall dimension(mm)	195016001800	458022402470	480026402480	560030003100	517032004480
Weight(kg)	2200	3400	3600	6500	9800

Core Advantages

Hot Mixing Tank + Water-Cooling Tank

SUS304 Inner Wall: The heavy-duty stainless steel interior is precision-polished. It prevents abrasive calcium powders from sticking or wearing down the tank walls.

Double-Tier Mixing Blades: Uses a dynamically balanced two-tier blade design. It creates a powerful vortex motion that guarantees 100% dead-zone-free compounding.

Double-Jacketed Cooling: The massive cooling tank is encased in a high-flow water jacket. It rapidly drops hot material temperatures from 130°C down to a safe 45°C.

Domed Lid Exhaust: Designed with a domed cover equipped with a dedicated moisture exhaust valve. It completely removes residual steam and moisture from the compounded batch.

Shaft Sealing System & Intelligent Automation

NSK/SKF Bearings: Equipped with premium imported bearings for the main drive shaft. This ensures thousands of hours of high-speed rotation without vibration or overheating.

Siemens PLC Control: A fully centralized touchscreen interface manages all mixing cycles. Operators can pre-set heating temperatures and cooling times for hands-free automatic execution.

Pneumatic Gate Valves: Both hot and cold tanks feature automated pneumatic discharge gates. This allows for instantaneous, jam-free material dumping into the next stage.

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FAQ

Why is a cooling mixer necessary after the heating mixer?

During the hot mixing stage, PVC powder and additives are subjected to intense high-speed friction, raising the material temperature to 120°C–130°C to achieve proper plasticization and moisture evaporation. If left at this high temperature, the PVC will rapidly thermally degrade, release harmful gases, and clump together into solid blocks. Dropping the hot batch immediately into the cooling mixer safely reduces the temperature to 40°C–45°C, ensuring the powder remains dry, loose, and chemically stable for extrusion.

Can I mix both hard PVC (UPVC) and soft PVC (SPVC) in this machine?

Yes, the MIDTECH heating and cooling mixer is highly versatile. You can process both UPVC (rigid pipes, profiles) and SPVC (cable jackets, soft hoses) by simply adjusting the mixing times, target temperatures, and blade configurations. When mixing soft PVC, liquid plasticizers are typically injected into the hot mixer through a dedicated valve on the lid to ensure even dispersion.

How do I clean the mixer when changing colors or material formulations?