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Industrial Mixers

Kneader Extruder

How the Kneader Extruder Works

Our Kneader Extruder combines the efficiency of a double arm - sigma blade mixer with the convenience of an extrusion screw for the mixing and discharging of heavy viscous materials.

The Kneader Extruder includes a set of counter-rotating kneading blades and a discharge screw. The blades are mounted on a horizontal axis in a u-shaped trough. Below the blades in a separate cavity is the discharge screw. During the mixing cycle the blades rotate toward each other while the mixing screw rotates in a reverse direction, constantly feeding new materials into the mixing blades. After the mixing/kneading cycle is complete, the screw is reversed and it transports the mixed materials from the mix zone out through a discharge die and on to further processing or packaging.

The Kneader Extruder has several advantages over conventional non-screw discharge kneaders:

1. Mixes in approx. 15% less time

2. Eliminates the manual task of scraping out sticky/tacky materials.

3.Eliminates operator exposure to materials of elevated temperatures or of a toxic nature, thereby improving plant safety.

Many sizes and designs are available to meet the most stringent process needs. Kneader Extruders are manufactured in many sizes from 1 through 1000 gallons capacity.

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Specifications Laboratory Specifications (open full size view)

  • The Sigma or "Z" Blade is the most popular and universal blade design used with Kneaders. This blade provides good horizontal transfer of all materials in the mixing trough.
  • The Knobben blade is used for the mastication of highly viscous masses that contain large blocks of polymers.
  • Banbury Blades are primarly used in conjunction with ram covers. The ram cover/banbury blade combination provides the maximum possible shear rates to the mixture.
  • The cutter blade mounted at the discharge helps to pelletize materials during discharge.
  • A round hole die is available in many shapes and sizes. This enables a user to discharge into a particular shape for further processing or packaging.
  • The largest opening possible is restricted only by the diameter of the discharge screw. This die allows the fastest disarge rates of all the dies that are available.
  • Replacable wear resistant blade tips are available for use in special applications that include highly abrasive materials such as abrasives for grinding wheels.
  • Trough saddles can be supplied as a replaceable component. If the mixer is going to be used to mix abrasive materials, this option hould be considered as the saddles are the highest wear section of the trough.
  • The entire trough can be lined with abrasion resistant materials.

Specifications Production Specifications (open full size view)

  • The Sigma or "Z" Blade is the most popular and universal blade design used with Kneaders. This blade provides good horizontal transfer of all materials in the mixing trough.
  • The Knobben blade is used for the mastication of highly viscous masses that contain large blocks of polymers.
  • Banbury Blades are primarly used in conjunction with ram covers. The ram cover/banbury blade combination provides the maximum possible shear rates to the mixture.
  • The cutter blade mounted at the discharge helps to pelletize materials during discharge.
  • A round hole die is available in many shapes and sizes. This enables a user to discharge into a particular shape for further processing or packaging.
  • The largest opening possible is restricted only by the diameter of the discharge screw. This die allows the fastest disarge rates of all the dies that are available.
  • Replacable wear resistant blade tips are available for use in special applications that include highly abrasive materials such as abrasives for grinding wheels.
  • Trough saddles can be supplied as a replaceable component. If the mixer is going to be used to mix abrasive materials, this option hould be considered as the saddles are the highest wear section of the trough.
  • The entire trough can be lined with abrasion resistant materials.