MALIK'S ANCILLARIES & SPARE PARTS

WELL GRIND Plastic Scrap Grinders from 1 HP to 10 HP.
MIX-O-WELL High speed PVC Compounding & Preheating mixers 50 Kgs/batch capacity. Extruder Instrumentation & control panels for temperature, motor speed control, pressure measurement and controls, process automation.
Crammer Feeder for feeding light-weight, difficult-to-feed materials in Extruder. Extrusion Dies & tooling.
Static Mixers as the name suggests have stationary (static) mixing elements which induce circuitous flow of polymeric materials and ingredients, at near low shear by splitting and re-uniting streams of material and ingredients . They are generally used where the ingredients can’t withstand high shear using normal mixers.

   
High speed mixer for PVC 50 kg.   Plastic Scrap Grinder 175mm blade  
   
Crammer Feeder for Extruder   Static Mixer  
   
Temperature & Motor Control Panels   Melt Pressure Transducers  
   
Hydraulic Screen Changer    

SINGLE/TWIN SCREWS & BARRELS

We also manufacture Single/Twin screw and barrels for Extruders (Plastic, Food or Rubber) and Injection Moulding machines, up to 150mm dia. in any L/D ratio. Whether your requirement is for existing or you need new design, leave the problem to our team of experts!

Screws are usually made from 4140 grade steel, stress relieved and hardened to 32 Rc with the screw OD flame hardened, hard faced with Stellite 6 or tungsten carbide coating. Other materials like Nitralloy or Stainless steel are also selected. The common materials for the barrel are D2 steel hardened or Nitralloy steel gas nitrided. Hastalloy can be offered for processing polymers with abrasive fillers, e.g. glass fibres.

The single screws for plastics are usually of solid construction while twin screw can be solid or in segments. The separate segments fit on central splined shafts and the geometry can be easily adjusted to suit processing task. Food Extruders usually employ segmented screws for most applications and the barrels are having spiral or straight grooves for more material movement and output.

   
Food Barrel   Aqua Barrel  
   
50mm Screw 400kg Gelatinising Screws  
   
Single Screw in various design   Grooved Food barrel  
   
Single Barrels   Twin barrel  
   
Camel Back Element   2 Lobe Kenading Element  
   
Screw Elements for TSE   Co rotating Twin Screw  
 
Counter Rotating Twinscrews HTST Short Cooking Screw & Barrel

For special projects, we have built machines using feed screws/barrels which are designed to work continuously at temperatures in excess of 500 C. These screws and barrels not only use special materials (screws use hard faced flights with special weld materials) and the barrel made from Hot Die Steel which is heat treated to retain hardness at elevated temperatures. Example of such project is the extraction of carbon black powder from pulverized rubber scrap in suitable Reactor designed for purpose. Two 50mm single screws were used for drawing out the carbon black powder by feeding scrap rubber by 2 nos. 90mm single screws at elevated temperatures in excess of 500 C.

   
Reactor   Reactor Head  
   
90mm Screw   50mm Screw  

These Screws were made for High Temperature used in above Reactor.

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