Helical extrusion: Difference between revisions
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'''Helical extrusion''' technology is applied in the [[plastic pipe]] industry. Basically the production process is a direct extrusion. During the pipe production several different materials are mixed in the extrusion unit according to a special formula. The | '''Helical extrusion''' technology is applied in the [[plastic pipe]] industry. Basically the production process is a direct extrusion. During the pipe production several different materials - depending on the desired final pipe - are mixed in the extrusion unit according to a special formula depending. The production machine is fed with granule material (PE or PP for structured wall gravity pipes and PE, glass fiber and bonding agent for pressure pipes). During the complex extrusion and mixing process a homogenous profile is helically extruded on a preheated rotating mandrel. In the case that a gravity pipe is being produced the profile is a structured wall and in the case of pressure pipe the profile is a solid wall. The production is a discontinoues procedure. | ||
==References== | ==References== | ||
{{Reflist}} | {{Reflist}} | ||
Revision as of 11:59, 29 July 2009
Helical extrusion technology is applied in the plastic pipe industry. Basically the production process is a direct extrusion. During the pipe production several different materials - depending on the desired final pipe - are mixed in the extrusion unit according to a special formula depending. The production machine is fed with granule material (PE or PP for structured wall gravity pipes and PE, glass fiber and bonding agent for pressure pipes). During the complex extrusion and mixing process a homogenous profile is helically extruded on a preheated rotating mandrel. In the case that a gravity pipe is being produced the profile is a structured wall and in the case of pressure pipe the profile is a solid wall. The production is a discontinoues procedure.