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HELP extruder design

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Topic: HELP extruder design

shubham
Member

Posts: 1
From:
Registered: Feb 2003

posted February 21, 2003 01:41 PM

we r students of mechanical engg.we r working on "DESIGN OF PLASTIC PIPE EXTRUSION MACHINE " could anybody please help us regarding design of extuder & extrusion die.

shubham

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Bob Cunningham
Senior Member

Posts: 115
From:Amesbury, Mass
Registered: Nov 2002

posted February 21, 2003 06:40 PM

A rotating auger inside a cylinder is the most common method. The clearance between the root of the auger (screw) and inside of the cylinder (barrel) should be designed to produce enough sheer to heat & melt the polymer. Also, you have to control the temperature of the cylinder.

The die will take the flow from the cylinder and shape it into a hollow tube (i.e. pipe). Temperature control is also important.

Hope that helps.

-Bob Cunningham

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