Extrusion Process
Types Of Material
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ARITA techniques used to manufacture thermoplastic sheet-
::Extrusion through a flat die.::
It has advantages and disadvantages depending on factors such as type of polymer being processed, thickness and width of sheet, and surface quality desired.

The classic machinery components for this process can be described as follows:

• Resin is fed into an extruder where it is plasticated into a melt.
• The extruder, consisting of a heated barrel with an internal rotating screw, pumps the melted resin into a flat sheet die which sizes the sheet (thickness and width).
• The sheet exits the die in a semi-viscous state and travels through a series of rolls to cool. These rolls also determine final sheet size, thickness, and width.
• The flat sheet may then be wound onto continuous rolls, or "pre-sheared" into discrete lengths.

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