EXTRUTEX SRL-Z Series PVC Compound Hot/Cold High-Speed Mixers

Design in Austria | Manufacturing in China (Shanghai & Nanjing) | Global After-Sales Support

Advanced High-Speed Thermal Mixing Technology for PVC Compounds

In close collaboration with our experienced business partners who possess decades of specialized knowledge in high-speed thermal mixers (heating and cooling systems), EXTRUTEX is proud to deliver the latest generation of mixing technology for a wide range of materials. Our SRL-Z series PVC compound hot/cold mixers represent the culmination of Austrian engineering excellence combined with precision manufacturing in our two state-of-the-art factories located in Shanghai and Nanjing, China. These systems are specifically engineered for the demanding requirements of PVC compounding, where consistent quality, high throughput, and process reliability are essential.

The SRL-Z series is designed as an integrated hot and cold mixing solution. The high-speed hot mixer rapidly heats and homogenizes PVC resin with stabilizers, lubricants, fillers, pigments, and other additives through a combination of mechanical shear and controlled thermal energy. Immediately afterward, the material is transferred to the cooling mixer, where it is efficiently cooled to a safe discharge temperature while maintaining excellent dispersion. This two-stage process ensures optimal gelation characteristics, superior product consistency, and minimized thermal degradation of sensitive PVC formulations.

Our mixer blades are manufactured with a thickness of less than 20 mm and can be replaced in under five minutes, significantly reducing downtime during maintenance. Constructed from high-grade SKD 11 tool steel with superior anti-abrasion properties, these blades deliver approximately twice the service life of conventional hard-faced or deposited-weld blades. This extended durability translates directly into lower operating costs and higher overall equipment effectiveness for continuous production environments.

Each mixer is equipped with a variable discharge valve that is easy to clean and designed for rapid product changeovers. The entire system architecture prioritizes dust-free operation: additional materials can be added without powder leakage, and the mixer remains free of vibration during high-speed operation. These design features reduce process costs while increasing overall efficiency by up to 30 percent compared with older-generation equipment.

Key Engineering Advantages

The SRL-Z series incorporates several proprietary design elements that distinguish it from standard high-speed mixers available on the market. The heating process utilizes a combination of electric heating elements, self-friction generated by the high-speed impeller, and, where applicable, recycling water circuits for precise temperature control. This multi-mode thermal management allows operators to achieve the exact temperature profile required for different PVC formulations—whether rigid, flexible, or specialty compounds.

Mixing times typically range between 8 and 15 minutes depending on batch size and formulation complexity, enabling high productivity without compromising quality. The dual-motor or inverter-driven configurations provide flexible speed control: high speed for intensive mixing and heating, and lower speed for gentle cooling and final homogenization. This precise speed management prevents overheating of shear-sensitive additives and ensures uniform particle distribution throughout the batch.

Vibration-free operation is achieved through robust structural design, precision-balanced rotors, and carefully engineered support frames. The absence of vibration not only improves workplace safety and operator comfort but also extends the life of bearings, seals, and other critical components. Combined with the easy-clean discharge valve and low-dust material addition ports, the SRL-Z series supports modern lean manufacturing principles and reduces cleaning time between production runs.

Applications in PVC Compounding

These mixers are ideally suited for the production of a broad spectrum of PVC compounds, including:

• Rigid PVC compounds for pipes, profiles, and fittings
• Flexible PVC compounds for cables, hoses, and flooring
• Window and door profile compounds requiring excellent weatherability
• Medical-grade and food-contact PVC formulations
• Filled and reinforced PVC compounds with high mineral content
• Specialty compounds incorporating impact modifiers, processing aids, and color masterbatches

The ability to add liquid or solid additives during the mixing cycle without dust emission makes the system particularly valuable for complex multi-component recipes. The short mixing cycle and high shear efficiency ensure that even difficult-to-disperse additives are thoroughly incorporated, resulting in superior mechanical properties and surface finish in the final extruded or molded products.

Global Manufacturing and Support Network

EXTRUTEX designs are developed in Austria, incorporating European engineering standards for safety, reliability, and process control. Manufacturing takes place in two modern facilities in Shanghai and Nanjing, China, where strict quality management systems ensure every machine meets the design specifications. This dual-factory approach provides production flexibility and shorter lead times for customers worldwide.

After-sales service and technical support are available through our network of agents and service partners in the United States, the Middle East, the European Union, and Asia. Local support teams provide installation supervision, operator training, spare-parts supply, and preventive maintenance programs, ensuring that your investment continues to deliver high performance throughout its service life.

Technical Specifications – SRL-Z Series PVC Hot/Cold Mixers

Key Design Features & Performance Benefits

Why Choose EXTRUTEX SRL-Z Series?

The combination of Austrian design philosophy and rigorous Chinese manufacturing delivers equipment that meets the highest international standards while remaining competitively priced. Operators benefit from short mixing cycles, excellent dispersion quality, and minimal maintenance requirements. Plant managers appreciate the reduced total cost of ownership resulting from longer blade life, lower energy consumption, and higher uptime. Quality assurance teams value the consistent batch-to-batch reproducibility that the SRL-Z series provides.

Whether you are producing standard rigid PVC pipe compounds or sophisticated flexible formulations for high-end applications, the EXTRUTEX SRL-Z hot/cold mixer range offers a scalable, reliable, and future-ready solution. From the compact SRL-Z100/200 ideal for pilot plants and specialty production to the high-capacity SRL-Z800/1600 designed for large-scale continuous operations, there is a model to match every production requirement.

Contact your nearest EXTRUTEX representative today to discuss how our PVC compound hot/cold mixers can optimize your compounding process, reduce operating costs, and elevate the quality of your final products. With design excellence from Austria, manufacturing strength in China, and dedicated after-sales support across the United States, Middle East, Europe, and Asia, EXTRUTEX is your trusted partner for advanced mixing technology.

EXTRUTEX – Precision Mixing Technology. Designed in Austria. Manufactured in Shanghai & Nanjing. Supported Worldwide.