Friday 2 October 2009

Plastic Extrusion


Step 1 - Thermoplastic powder is placed in the hopper; this powder then falls into the rotating
Achimedean screw. Which in turn pushed the material towards the heated section of the
extruder.
Step 2 - Heaters soften te plastic, forced threw the die by the rotating screw.
Step 3 - On exiting the die, pastic product is the cooled using a water jet.
Step 4 - Further along the transfer table, product is cut for the required legth.
Works like a childs plasticine toy, it pushed the plastic threw the holes
making a long tube. e.g piping

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