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THE PLASTICS EXTRUSION OPERATING MANUAL
THE PLASTICS EXTRUSION OPERATING MANUAL
by Allan L. Griff, Consulting Engineer
The first simple and practical guide for extrusion people everywhere -- the basic facts of extrusion packed into a convenient illustrated 70-page booklet, small enough to carry with you, no long explanations, yet complete enough to teach you how an extruder works, in clear, readable language. Based on Allan Griff's two-day intensive seminar, "Introduction to Extrusion Technology," this manual is designed to:
* Train new operators, foremen and technicians;
* Provide background information to anyone working in extrusion;
* Help sales people, top management and others to understand what goes on inside their production machines.
The Plastics Extrusion Operating Manual is available in boxes of 10 copies, $110 per box prepaid or $125 per box if billing is required. We also accept American Express cards.
For a summary of the contents, please click here or scroll down.
Translations into French, Spanish, Portuguese and Russian are available.
The Audio Manual is a set of audio cassettes, four sides, approximately 4 hours playing time, narrated by author Allan L. Griff. The Audio Manual will help you learn about extrusion in your car or wherever a cassette is more convenient than a book. The Audio Manual is sold with one printed manual, which includes drawings and a suppliers directory. The cost is the same as a box of printed manuals, $110 prepaid or $125 if billed. The combination of a box of 10 manuals plus the cassettes is $180 prepaid or $195 if billed.
Use our online form to order or call (301)654-1515
THE PLASTICS EXTRUSION OPERATING MANUAL
by Allan L. Griff, Consulting Engineer
Outline of Contents
Introduction to Extrusion --mechanical and thermal principles, variables, typical values.
Drive System -- motors, speed reduction and variation, thrust bearings.
Screws and Barrels -- three-zone concept, L/D, pitch, compression ratio, clearances, materials of construction, special designs: Maddock, barrier, pins, grooves, vents and twin-screw systems.
The Head Zone -- screens and changers, breaker plates, safety devices, measurement of pressure and melt temperature, static mixers, gear pumps.
Extrusion Dies -- materials, heating, need to reduce resistance.
What Happens Inside the Barrel -- feed zone: perfect bite and overbite, use of barrel heat to control wall friction, starve feeding, grooved barrels, bulky feed.
What Happens Inside the Barrel -- compression zone: melting mechanism, backflow over the flights, solid bed theory, surging and use of the motor ammeter.
What Happens Inside the Barrel -- metering zone: final mixing and melting, drag flow and pumping capacity, melt density, blue-screw syndrome, melt pressure measurement.
What Happens in the Head and Die -- concept of resistance, back-pressure, streamlining, die lines, die temperature control, dimension control, swell, drawdown, orientation.
Setting Conditions -- think in zones, not profiles; what controllers and microprocessors do.
Maintenance -- 12 key areas (motor, heaters, screw, etc.), cleaning small parts.
Safety -- dangers from heat, electricity, moving parts, weight, other hazards.
Start-up, Material Change and Shutdown -- preheating, full or empty screw, watch vital signs, purges, disassembly and cleaning, screw removal.
Common Problems -- surging, poor mixing, roughness, overeating, moisture, air, contamination.
Materials for Extrusion -- explanation of melt index, quality tests for incoming materials.
Directory -- websites and phones of over 350 suppliers of new and used equipment.
