What is Pipe Extrusion?

• Resin is plasticated by an extruder and shaped into the form of a pipe by a die
• The still soft pipe is fed into a calibrator which adjusts the dimensions of the pipe
• The pipe then goes into the cooling system
• After cooling, the pipe goes into the take-off system called a puller. The puller controls the speed of the extrusion line
• Then the pipe is cut into a specified length by a cutter
• Finally, the cut pipes are stacked (or wound up) by a stacker (or a coiler)

HIPF Course Description

Course Objective

1. To understand the parts of the Pipe Extrusion machine and their functions
2. To learn the proper operation of a Pipe Extrusion machine
3. To learn measurement of basic characteristic of a Pipe Extrusion product
4. To learn the typical reporting methods in a plastic pipe production setup

Course Outline

1. Safety in the Workshop

2. The Pipe Extrusion Machine—Parts and Functions

   Parts of the Extruder; Single Screw and Twin Screw Extruders; Peripheral Equipment of Extruder; Die, Vacuum Bath; Haul Off System; Cutting Saw; Tipping Table
3. Practice Operation—uPVC Pipe Processing with Single Screw Extruder
4. Practice Operation—HDPE Pipe Processing with Single Screw Extruder
5. Disassembling and Assembling of the Screw, the Die, and the Calibrator
6. Typical Troubleshooting for Pipe Processing
7. Quality Standards for Pipe and Measurement of Product Characteristics in Production Site
8. Reporting Methods in a Plastics Pipe Production Site
9. Simulation of a 3-Shift Production Environment in a Pipe Extrusion Plant