Two stage extruder

Two-Stage Extruder: Simplifying Complexity, Unlocking Limitless Potential in Advanced Material Processing

Conventional single-stage extruders often fall short when handling highly filled, high-volatility, or complex formulations requiring in-line reactions. Zhuoyue's two-stage extruder delivers an ultimate one-stop solution through its innovative “stepwise processing” concept.

Synergy Where 1+1 > 2

We intelligently integrate a high-performance twin-screw compounder with a high-build-up-pressure single-screw extruder. The first stage focuses on “chemical reactions”—achieving precise melting, blending, and modification. The second stage handles “physical forming”—completing thorough devolatilization and stable high-pressure extrusion. Working in tandem, they decompose and optimize complex processes for maximum efficiency.

The Power Tool for Conquering Process Challenges

Whether removing stubborn moisture and solvents or delivering stable extrusion pressure for high-viscosity materials, our two-stage extruder handles it effortlessly. It significantly expands your processing capabilities, making large-scale production of challenging formulations possible.

Empowering Your Critical Applications

From highly filled masterbatches to direct-molded profiles, from chemical recycling of plastics to synthesis of high-performance polymers, COWIN's two-stage extruder is your reliable partner for enhancing product quality and developing premium new materials.

Two stage extruder / Tandem extrusion system

The two stage extruder ：The first stage twin extruder usually runs at the high speed for better compounding and higher throughput. The second stage must be a single screw extruder,  with a large diameter and low speed operation. The low screw speed avoids over-shearing force, Due to the strong heat exchange ability ,the internal cooling system can effectively prevent overheating . The two stage extruder allows the operator to perform more flexible , predictable mixing processes and temperature control.

The two stage extruder is mainly used for the compounding of thermoplastic and shearing .  double-stage structure are suitable for processing a variety of materials, such as: PVC, XLPE cable material, soft PVC medical material, hard PVC, PE low smoke no Halogen resistance fuel, etc. 

Zhuoyue two stage compounding extruder consisted of two parts. The first stage is HTE co-rotating twin screw extruder, the second stage is single screw extruder.

Combine the high speed and extensive mixing of twin screw processing and the low speed, low temperature, and low shear of single screw processing; Ideal for compounding of heat-sensitive and shear-sensitive materials PVC compounds for cable, shoe sole, transparent container, and medical applications EVA shield cable compounds; Carbon black masterbatches of PE, EVA, etc.

Main application:

(1) Carbon black masterbatch

(2) PVC cable, PVC transparent bottle and blood transfusion tube materials

(3) PE silicohydride crosslink cable material, hyperoxide crosslink cable material

(4) Wood-plastic blending material

(5) Processing for many kinds of heat-sensitive polymeride.