Beschreibung
The extrusion die is one of the most critical elements of an extrusion system. However, very few books have been devoted exclusively to die design. This book will combine a thorough engineering approach to die design with a practical, hands-on approach. The authors together have over sixty years of experience in extrusion and die design. They have been involved in all aspects of die design: polymer rheology, analysis of flow, layout of extrusion dies, testing of new extrusion dies, troubleshooting die related problems, maintenance of extrusion dies, etc. The book will be a valuable resource to any person involved with extrusion dies. Not only to people that design extrusion dies but also to people that set up extrusion dies, troubleshoot die flow problems, maintain extrusion dies, and to students that learn about extrusion in schools, colleges, and universities
Produktsicherheitsverordnung
Hersteller:
Carl Hanser Verlag GmbH & Co.KG
pina.lore@hanser.de
Kolbergerstaße 22
DE 81679 München
Autorenportrait
Dr. Chris Rauwendaal is president of Rauwendaal Extrusion Engineering, Inc., (REE, Inc) and has experience in a wide range of extrusion operations, including fiber spinning, film, sheet, tubing, medical tubing, pipe and profile extrusion, co-extrusion, and reactive extrusion.
Leseprobe
1. Introduction 2. Flow properties important in die design (CR) · Shear viscosity and elongational viscosity · Effect of shear rate, temperature, and pressure · Viscoelastic behavior 3. Analysis of flow in extrusion dies (CR) · Basic balance equations · Flow through simple shapes · Analysis of extrudate swell · Numerical analysis of flow in extrusion dies 4. Mechanical considerations and manufacturing issues (DC) · Material of construction · Platings · Heat treatment and surface treatment · Mechanical deformation of dies · Layout of heaters in extrusion dies 5. Dies for sheet and flat film (CR with perhaps Wayne Gifford contributing) · Tdies · Fishtail dies · Coathanger dies · Horseshoe dies 6. Dies for blown film (CR) · Spiral mandrel dies · Conventional crosshead dies 7. Dies for tubing and pipe (CR) · Inline dies · Crosshead dies · Spiral mandrel dies 8. Dies for profile (DC) · Rules for profile design · Balancing of profile dies · Plate dies · Fully streamlined dies 9. Coextrusion dies (DC/CR) · Feed block systems · Multimanifold systems · Hybrid coextrusion dies 10. Dies for extrusion coating (CR/DC) · Wire coating dies · Paper and film coating · Coating of extruded profiles 11. Operation and maintenance of dies (DC) · Assembly of extrusion dies · Disassembly of extrusion dies · Maintenance of extrusion dies 12. Troubleshooting die related problems (CR/DC) · Melt fracture and shark skin · Interface distortion in coextrusion · Sink marks · Die lines · Clamshelling · Etc. 13. Calibrating units (DC) · Slide calibrators · External calibrators with internal air pressure · External vacuum calibrators · Internal calibrators · Precision profile pultrusion 14. Downstream equipment (DC) · Cooling units · Takeup devices · Measurement of extrudate dimensions · Cutters and saws 15. Special extrusion techniques (CR/DC) · Intermittent extrusion · Alternate poly