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Silicone Rubber Sigma Kneader Mixer

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  • NH-100

Customizable Design

  • The material contact part can be SS304, SS316 with mirror polished or carbon steel. The rest part can also be stainless steel and mostly adopt carbon steel with automotive grade industrial paint

  • Sigma blades speed can be adjustable with inverter control; one is fast and another is slow.

  • Discharge method can hydraulic tilting discharging or screw extrusion discharging or both of them.

  • Independent Control Panel: Function control,Schneider electronic components,Circuit breaker protection,Voltage & current showed and etc.

  • Vacuum function( optional): it includes vacuum pump, metal hose, buffer tank and vacuum gauge. Vacuum degree can reach-0.096mpa

  • Heating function ( optional): Electric heating with far ultrared heaters or with jacket for heating transfer oil; Jacket for steam; Jacket for water circulation.

  • Cooling function( optional): Jacket for cooling water circulation or equipped together with a chiller.

  • Other customized function can be discussed.


Technical Parameters



Silicone Rubber

A kneader, such as a sigma mixer, plays a crucial role in the production of silicone rubber. Silicone rubber is a versatile material known for its high heat resistance, excellent electrical insulation properties, and flexibility. The manufacturing process involves mixing various ingredients to achieve the desired properties in the final product.

Here's how a kneader, like a sigma mixer, contributes to silicone rubber production:

Homogeneous Mixing: Silicone rubber production requires blending various ingredients such as silicone polymers, fillers, plasticizers, curing agents, and additives. A sigma mixer provides efficient and thorough mixing, ensuring uniform distribution of these components throughout the mixture. This homogeneous blending is essential for achieving consistent product quality and properties.

Dispersion of Fillers: Fillers, such as silica or carbon black, are often added to silicone rubber to enhance its mechanical properties, such as tensile strength and abrasion resistance. The kneading action of the sigma mixer helps disperse these fillers evenly within the silicone matrix, preventing agglomeration and ensuring that they are uniformly distributed throughout the mixture.

Temperature Control: Some silicone rubber formulations require precise temperature control during mixing to facilitate the incorporation of curing agents or to prevent premature curing. Sigma mixers can be equipped with heating or cooling systems to maintain the desired temperature throughout the mixing process, allowing for optimal processing conditions.

Degassing: Air bubbles can affect the quality and performance of silicone rubber products. Sigma mixers often feature vacuum capabilities to remove trapped air and gases from the mixture during mixing. This degassing process helps produce silicone rubber with improved mechanical properties and reduced porosity.

Consistency and Efficiency: Kneaders like sigma mixers offer high throughput rates and consistent mixing performance, allowing for efficient production of silicone rubber compounds. The robust design of sigma mixers enables continuous operation, minimizing downtime and ensuring a steady supply of quality silicone rubber compounds.

Overall, the kneading action, temperature control, and degassing capabilities of sigma mixers make them indispensable equipment in the manufacturing process of silicone rubber, contributing to the production of high-quality, performance-driven materials used in various industries, including automotive, electronics, healthcare, and construction.

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