Technical Insights / Knowledge

When purchasing a Sigma Blade Kneader Mixer for your chemical or plastics manufacturing line, choosing the right discharging method is just as critical as selecting the mixing capacity. The discharge mechanism directly impacts your production cycle time, labor costs, and material yield.

As a veteran manufacturer, LAIZHOU KEDA CHEMICAL MACHINERY CO., LTD. breaks down the two most popular discharging methods to help you make an informed decision.

1. Hydraulic Tilting Discharge (Hydraulic Dumping)

In a tilting kneader, the entire mixing trough is rotated up to 90–110 degrees via hydraulic cylinders.

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Best For: Highly cohesive but semi-fluid materials, rubbers, and blocks that can easily slide out under gravity.

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Advantages: Extremely fast discharge speed, 100% visible cleaning of the trough interior, and lower initial equipment cost.

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2. Bottom Screw Extrusion Discharge

A discharge screw is positioned in a separate channel at the bottom of the mixing trough, running parallel or perpendicular to the mixing blades.

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Best For: Highly viscous, sticky materials (like hot melt adhesives, BMC, chewing gum base, and heavy plastics) that do not flow naturally.

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Advantages: Continuous extrusion directly into pelletizers, packaging lines, or subsequent processing stages. It eliminates manual handling and improves safety.

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Customize Your Mixing Solution with KEDA

Still unsure which configuration fits your recipe? LAIZHOU KEDA provides free material testing and customized CAD layouts. Our goal is to optimize your workflow for maximum throughput and minimum waste.