Injection Moulding 2002, Barcelona, Spain, 18th- 19th March, 2002

Author: Conference Proceedings, 2002
ISBN 978-1-85957-314-3

Barcelona, Spain, 18th- 19th March 2002

$180.00

Summary
Table of Contents

The comprehensive technical programme provided presentations from leading experts in the injection moulding and related fields. Papers covered material development and design solutions, optimisation of the injection moulding process through 3D simulation techniques and computer-aided engineering (CAE), issues of globalisation within the industry, opportunities provided by the internet and e-commerce, the use of gas and water assisted moulding techniques help to reduce cycle times and improve quality, and rapid tooling design and production processes.

The Injection Moulding 2002 conference provided an excellent opportunity to hear the latest injection moulding developments and gain a truly global perspective of this important industry.

True 3D Simulation Techniques of Injection Moulding and Related Processes
David Hsu, CoreTech System Co, Taiwan

Using 3D Simulation for the Optimisation of Injection Moulded Thermoset Materials for Automotive Applications
Lothar Kallien, Sigma Engineering GmbH, Germany Why Real-time Production and Process Monitoring
Andy Jewell, Mattec Corp, UK

Profit from Redesign Tooling and Leadership Change
Wilhelm O Morgan, Kangan Batman College of Technical and Further Education, Australia

Optimisation of the Plastic Injection Moulding Process via Expert Systems
lluis Chico, Fundacion ASCAMM, Spain

The Water Injection Technique (WIT) - Opportunities and Challenges
Tim Jüntgen, Institute of Plastics Processing (IKV), Germany

Gas and Water Injection Moulding
Andreas Janisch, Factor GmbH, Germany

Koolgas: Cryogenic gas-assisted injection moulding - an alternative to conventional GAIM
Rui Magalhaes, University of Warwick, UK

Re-Shaping the future of Plastics (e-marketplace)
Joachim Franke, Omnexus, Switzerland

The Impact of Patent Protection on the Globalization of the Mold and Hot Runner Industries
George Olaru, Mold-Masters Ltd, Canada

The International Capture of Intellect
Wilhelm Morgan, Kangan Batman College of Technical and Further Education, Australia

Recent developments in flame retardants systems to improve melt flow of thermoplastics
Ronald Wilmer, DSBG Eurobrom BV, The Netherlands

Hybrid Technology
Eduardo Ortiz, Bayer Hispania SA, Spain

Application of co-injection process to handles for the gear lever (multi-component injection mouldng)
Rafael B Garcia-Atxabe, Fundacion GAIKER, Spain

In mould painting using granular injected paint technology
Jo C Love, University of Warwick, UK

System Solution for Decorated Mouldings by IMC
Joachim Berthold, Battenfield GmbH, Germany

The Origin of the Surface Defect 'Tiger Stripes' on Injection Moulded Products
Anabelle Legrix, Imerys Minerals Ltd, UK

Surface 'Marbling' in Mineral Filled Nylon: Origins and Solutions
Arie Schepens, DSM Petrochemicals, The Netherlands

Long-term design for multi-shot moulding
Andi Clements, Rapra Technology, UK

The breakthrough in Rapid Tooling - Increasing precision and efficiency in Direct Metal Laser-Sintering with 20 micron layers
Dietmar Frank, EOS GmbH - Electro Optical Systems, Germany

Magics Tooling Expert
Johan Pauwels, Materialise, Belgium

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{"id":11242243972,"title":"Advances in Blow Moulding Process Optimization","handle":"978-1-85957-050-0","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\nAuthor: Andreas Garcia-Jejon \u003cbr\u003eISBN 978-1-85957-050-0 \u003cbr\u003e\u003cbr\u003eIndustrial Materials Institute, National Research Council of Canada\u003cbr\u003e\u003cbr\u003e112 pages, softbound\u003cbr\u003e\n\u003ch5\u003eSummary\u003c\/h5\u003e\nReview of the current understanding of blow molding technology. The report is based on extensive literature review and includes a large number of references as well as abstracts covering a broad base of existing literature on the subject. The report discussed blow molding processes, materials used, application of products, a broad review of current research activities and expected future developments.\n\u003ch5\u003eTable of Contents\u003c\/h5\u003e\nBlow molding history \u003cbr\u003eExtrusion blow molding \u003cbr\u003eInjection and injection\/stretch blow molding \u003cbr\u003eMaterials and applications \u003cbr\u003eParison formation studies \u003cbr\u003eParison\/perform inflation studies \u003cbr\u003eCooling\/heating stage \u003cbr\u003eMaterial characterization \u003cbr\u003eFuture developments\u003cbr\u003e\u003cbr\u003e","published_at":"2017-06-22T21:14:55-04:00","created_at":"2017-06-22T21:14:55-04:00","vendor":"Chemtec Publishing","type":"Book","tags":["1995","book","characterization","extrudsion","extrusion blow molding","inflation","injection","molding","moulding","p-processing","parison","plastic","polymer","polymers","process"],"price":7500,"price_min":7500,"price_max":7500,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":43378445700,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Advances in Blow Moulding Process Optimization","public_title":null,"options":["Default Title"],"price":7500,"weight":1000,"compare_at_price":null,"inventory_quantity":1,"inventory_management":null,"inventory_policy":"continue","barcode":"978-1-85957-050-0","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/chemtec.org\/cdn\/shop\/products\/978-1-85957-050-0.jpg?v=1499719219"],"featured_image":"\/\/chemtec.org\/cdn\/shop\/products\/978-1-85957-050-0.jpg?v=1499719219","options":["Title"],"media":[{"alt":null,"id":350147051613,"position":1,"preview_image":{"aspect_ratio":0.767,"height":450,"width":345,"src":"\/\/chemtec.org\/cdn\/shop\/products\/978-1-85957-050-0.jpg?v=1499719219"},"aspect_ratio":0.767,"height":450,"media_type":"image","src":"\/\/chemtec.org\/cdn\/shop\/products\/978-1-85957-050-0.jpg?v=1499719219","width":345}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch5\u003eDescription\u003c\/h5\u003e\nAuthor: Andreas Garcia-Jejon \u003cbr\u003eISBN 978-1-85957-050-0 \u003cbr\u003e\u003cbr\u003eIndustrial Materials Institute, National Research Council of Canada\u003cbr\u003e\u003cbr\u003e112 pages, softbound\u003cbr\u003e\n\u003ch5\u003eSummary\u003c\/h5\u003e\nReview of the current understanding of blow molding technology. The report is based on extensive literature review and includes a large number of references as well as abstracts covering a broad base of existing literature on the subject. The report discussed blow molding processes, materials used, application of products, a broad review of current research activities and expected future developments.\n\u003ch5\u003eTable of Contents\u003c\/h5\u003e\nBlow molding history \u003cbr\u003eExtrusion blow molding \u003cbr\u003eInjection and injection\/stretch blow molding \u003cbr\u003eMaterials and applications \u003cbr\u003eParison formation studies \u003cbr\u003eParison\/perform inflation studies \u003cbr\u003eCooling\/heating stage \u003cbr\u003eMaterial characterization \u003cbr\u003eFuture developments\u003cbr\u003e\u003cbr\u003e"}

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{"id":11242222660,"title":"Handbook of Molded Part Shrinkage and Warpage","handle":"1-884207-72-3","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\nAuthor: Jerry M. Fischer \u003cbr\u003eISBN 1-884207-72-3 \u003cbr\u003e\u003cbr\u003eTools and Troubleshooting, Inc., USA\u003cbr\u003e\u003cbr\u003epages 252, figures : 302\u003cbr\u003e\n\u003ch5\u003eSummary\u003c\/h5\u003e\nThis is the first and only handbook to deal with these fundamental problems. \u003cbr\u003e\u003cbr\u003eThe handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effects of the molding process conditions, and reveals why you never can have a single \"correct\" shrinkage value. But, that's not all. The handbook shows you how to alleviate problems by careful design of the molded part and the mold, careful selection of materials, and proper process techniques. It examines computer-aided methods of forecasting shrinkage and warpage. And, most important of all, the handbook provides representative data to work with. \u003cbr\u003e\u003cbr\u003eThis is the most comprehensive collection of shrinkage data ever compiled in a book and includes hard-to-find multi-point information on how materials, part design, mold design processing, and post mold treatment affect the part's shrinkage and warpage. This book for all people who live and work with mold and shrinkage and warpage.\u003cbr\u003e\u003cbr\u003e\n\u003ch5\u003eTable of Contents\u003c\/h5\u003e\n1. Introduction to Plastics Processing\u003cbr\u003e1.1. Interactivity Basics \u003cbr\u003e1.2. Thermodynamic Principles Governing Injection Molding\u003cbr\u003e1.2.1 Filling\u003cbr\u003e1.2.2 Holding\u003cbr\u003e1.2.3 Cooling \u003cbr\u003e\u003cbr\u003e2. Shrinkage and Warpage\u003cbr\u003e2.1 Mold Shrinkage \u003cbr\u003e2.1.1 Determination of Shrinkage\u003cbr\u003e2.1.2 Molded-in Stress\u003cbr\u003e2.2 Warpage \u003cbr\u003e2.2.1 Common Causes of Non-Uniform Shrinkage\u003cbr\u003e2.2.2 principles of Minimizing Warpage \u003cbr\u003e2.3 Post-Mold Shrinkage \u003cbr\u003e\u003cbr\u003e3. Causes of Molded Part Variation - Part Design \u003cbr\u003e3.1 Wall Thickness\u003cbr\u003e3.2 Ribs\u003cbr\u003e3.3 Bosses\u003cbr\u003e3.4 Example of Proper Part Design\u003cbr\u003e3.5 Other Design Consideration \u003cbr\u003e\u003cbr\u003e4. Causes of Molded Part Variation - Material \u003cbr\u003e4.1 Amorphous and Semi-Crystalline Resins \u003cbr\u003e4.1.1 Amorphous Materials\u003cbr\u003e4.1.2 Semi-Crystalline Materials\u003cbr\u003e4.2 Effects of Fillers, Reinforcements, Pigments, Time and Stress\u003cbr\u003e4.2.1 Effects of Fillers and Fibers\u003cbr\u003e4.2.2 Minimizing the Effects of Fiber Reinforcements\u003cbr\u003e4.2.3 Effects of Pigments\u003cbr\u003e4.2.4 Effects of Time and Stress\u003cbr\u003e4.3 Shrinkage Prediction : Pressure-Volume-Temperature (PVT) Behavior \u003cbr\u003e4.3.1 PVT System Properties\u003cbr\u003e4.3.2 Predicting Mold Shrinkage\u003cbr\u003e4.3.3 Accuracy of Shrinkage Prediction \u003cbr\u003e\u003cbr\u003e5. Causes of Molded Part Variation - Mold Design \u003cbr\u003e5.1 Cavity Dimensions and Design Factors \u003cbr\u003e5.2 Gate Types\u003cbr\u003e5.2.1 Sprue Gate\u003cbr\u003e5.2.2 Pin, Pinpoint, Tunnel, and Submarine Gates\u003cbr\u003e5.2.3 Edge and Straight Gates\u003cbr\u003e5.2.4 Fan, Film, Diaphram, Ring, Disk, Cone, and Double-Sided Gates\u003cbr\u003e5.2.5 Multiple Gates\u003cbr\u003e\u003cbr\u003e5.3 Gate Location \u003cbr\u003e5.3.1 Side and End gates\u003cbr\u003e5.3.2 Determining Gate Position \u003cbr\u003e5.4 Gate Size \u003cbr\u003e5.5 Gate Design Systems\u003cbr\u003e5.6 Runner Design \u003cbr\u003e5.6.1 Multiple Cavity Molds\u003cbr\u003e5.6.2 Poor Ejection\u003cbr\u003e5.7 Mold Cooling Design\u003cbr\u003e5.7.1 Cooling Channels\u003cbr\u003e5.7.2 Effects of Corners\u003cbr\u003e5.7.3 Thickness Variations\u003cbr\u003e5.7.4 Runnerless Molds\u003cbr\u003e5.7.5 Slides\u003cbr\u003e5.7.6 Venting \u003cbr\u003e5.8 Mold Construction Materials\u003cbr\u003e5.9 Annealing \u003cbr\u003e5.10 Gas Assist \u003cbr\u003e5.11 Pitfalls to Avoid \u003cbr\u003e\u003cbr\u003e6. Causes of Molded Part Variation - Processing \u003cbr\u003e6.1 Molding Conditions\u003cbr\u003e6.1 (Injection melt Temperature) - if should be a separate section, renumber as 6.2 and renumber subsequent sections)\u003cbr\u003e6.2 Injection Rate\/Pressure\u003cbr\u003e6.2.1 Injection Speed\u003cbr\u003e6.2.2 Injection Pressure\u003cbr\u003e6.3 Holding Pressure\/Time\u003cbr\u003e6.3.1 Holding Pressure \u003cbr\u003e6.3.2 Holding pressure Time\u003cbr\u003e6.4 Mold Temperature\u003cbr\u003e6.4.1 Predicting mold Temperature Effects\u003cbr\u003e6.4.2 Relationship Between Mold Temperature and Wall Thickness\u003cbr\u003e6.5 Demolding Temperature\u003cbr\u003e6.6 Molded-in Stresses\u003cbr\u003e\u003cbr\u003e7. Factors Affecting Post-Mold Shrinkage\u003cbr\u003e7.1 Effects of Temperatures on Dimensions\u003cbr\u003e7.2 Effects of Moisture on Dimensions\u003cbr\u003e\u003cbr\u003e8. How to Control Mold and Post-mold Shrinkage and Warpage \u003cbr\u003e8.1 Find the Cause\u003cbr\u003e8.2 Part Geometry\u003cbr\u003e8.2.1 Overall Part Dimensions\u003cbr\u003e8.2.2 Wall Thickness\u003cbr\u003e8.2.3 Shrinkage Restricting Features\u003cbr\u003e8.3 Material Consideration\u003cbr\u003e8.3.1 Filler or Reinforcement Content\u003cbr\u003e8.3.2 Degree of Moisture Absorption\u003cbr\u003e8.4 Tooling Considerations \u003cbr\u003e8.4.1 Gate Locations\u003cbr\u003e8.4.2 Types and Sizes of Gates\u003cbr\u003e8.4.3 Runner Systems\u003cbr\u003e8.4.4 Mold Cooling Layout\u003cbr\u003e8.4.5 Tool Tolerances \u003cbr\u003e8.4.6 Draft Angles \u003cbr\u003e8.4.7 Ejection system Design\u003cbr\u003e8.4.8 Elastic Deformation of Mold\u003cbr\u003e8.4.9 Mold Wear\u003cbr\u003e8.4.10 Mold Contamination\u003cbr\u003e8.4.11 Position Deviations of Movable Mold Components\u003cbr\u003e8.4.12 Special Issues with Gears\u003cbr\u003e8.5 Processing Considerations\u003cbr\u003e8.5.1 Melt Temperatures and Uniformity \u003cbr\u003e8.5.2 Mold Temperatures and Uniformity \u003cbr\u003e8.5.3 Filling, Packing, and Holding Pressures\u003cbr\u003e8.5.4 Filling, Packing, and Holding Times\u003cbr\u003e8.5.5 Part Temperature at Ejection\u003cbr\u003e8.5.6 Clamp Tonnage\u003cbr\u003e8.5.7 Post-Mold Fixturing\/Annealing\u003cbr\u003e8.5.8 Special Problems with Thick Walls and Sink Marks\u003cbr\u003e8.5.9 Nozzles \u003cbr\u003e8.5.10 Excessive or Insufficient Shrinkage\u003cbr\u003e8.5.11 Secondary Machining\u003cbr\u003e8.5.12 Quality Control\u003cbr\u003e8.6 Controlling Warpage \u003cbr\u003e\u003cbr\u003e9. Computer Analysis\u003cbr\u003e9.1 How It Works\u003cbr\u003e9.1.1 Assumptions \u003cbr\u003e9.1.2 Generic Elements and Potential Limitations\u003cbr\u003e9.2 Does It Work \u003cbr\u003e9.2.1 Machine Settings and Controls\u003cbr\u003e9.2.2 Different Parts, Different Problems \u003cbr\u003e9.2.3 Differing Capabilities of Software\u003cbr\u003e9.3 What are Realistic Expectations of CAE?\u003cbr\u003e9.4 Resources\u003cbr\u003e9.4.1 How Much Does it Cost?\u003cbr\u003e9.4.2 Consultants \u003cbr\u003e9.5 OR Chapter 9 Appendix: Extended Illustration\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e10. Case studies\u003cbr\u003e10.1 Unexpected Housing Shrink and Combing of the Glass Fibers\u003cbr\u003e10.2 Changing Materials Triggers Warpage \u003cbr\u003e10.3 Thin-Molded Lids\u003cbr\u003e10.4 Oversize Part Injection Molding Alkyd Thermoset\u003cbr\u003e10.5 Inadequate Mold: Baby Dish\u003cbr\u003e10.6 Gas Entrapment: Baby Dish\u003cbr\u003e10.7 Sprue and Runners\u003cbr\u003e10.8 Spool Mold \u003cbr\u003e10.9 Thermoplastic Engineering Design Study \u003cbr\u003e10.10 CDs\u003cbr\u003e10.11 Flat Parts\u003cbr\u003e10.12 Electronic Connectors\u003cbr\u003eData\u003cbr\u003eGlossary\u003cbr\u003eAbbreviations \u003cbr\u003eReferences\u003cbr\u003eIndex\u003cbr\u003e\u003cbr\u003e\n\u003ch5\u003eAbout Author\u003c\/h5\u003e\nJerry Fischer, CEO of Tools and Troubleshooting, Inc., brings to this handbook over 35 years experience as a mold designer and builder and consultant on mold shrinkage and warpage conditions. In the 1980s, Jerry published two books with McGraw-Hill on computer-aided design.","published_at":"2017-06-22T21:13:50-04:00","created_at":"2017-06-22T21:13:50-04:00","vendor":"Chemtec Publishing","type":"Book","tags":["2002","blow molding","book","compression molding","cooling","extrusion","fabrication","fillers","fluoropolymers","gate types","injection molding","injection rate","melt-processible","mold design","mould","moulding","p-processing","polymer","polymerization","reinforcement","rotational molding","shrinkage","tooling","transfer molding","tube","warpage","wire"],"price":26000,"price_min":26000,"price_max":26000,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":43378376452,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Handbook of Molded Part Shrinkage and Warpage","public_title":null,"options":["Default Title"],"price":26000,"weight":1000,"compare_at_price":null,"inventory_quantity":1,"inventory_management":null,"inventory_policy":"continue","barcode":"1-884207-72-3","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/chemtec.org\/cdn\/shop\/products\/1-884207-72-3.jpg?v=1499442251"],"featured_image":"\/\/chemtec.org\/cdn\/shop\/products\/1-884207-72-3.jpg?v=1499442251","options":["Title"],"media":[{"alt":null,"id":355727966301,"position":1,"preview_image":{"aspect_ratio":0.776,"height":499,"width":387,"src":"\/\/chemtec.org\/cdn\/shop\/products\/1-884207-72-3.jpg?v=1499442251"},"aspect_ratio":0.776,"height":499,"media_type":"image","src":"\/\/chemtec.org\/cdn\/shop\/products\/1-884207-72-3.jpg?v=1499442251","width":387}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch5\u003eDescription\u003c\/h5\u003e\nAuthor: Jerry M. Fischer \u003cbr\u003eISBN 1-884207-72-3 \u003cbr\u003e\u003cbr\u003eTools and Troubleshooting, Inc., USA\u003cbr\u003e\u003cbr\u003epages 252, figures : 302\u003cbr\u003e\n\u003ch5\u003eSummary\u003c\/h5\u003e\nThis is the first and only handbook to deal with these fundamental problems. \u003cbr\u003e\u003cbr\u003eThe handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effects of the molding process conditions, and reveals why you never can have a single \"correct\" shrinkage value. But, that's not all. The handbook shows you how to alleviate problems by careful design of the molded part and the mold, careful selection of materials, and proper process techniques. It examines computer-aided methods of forecasting shrinkage and warpage. And, most important of all, the handbook provides representative data to work with. \u003cbr\u003e\u003cbr\u003eThis is the most comprehensive collection of shrinkage data ever compiled in a book and includes hard-to-find multi-point information on how materials, part design, mold design processing, and post mold treatment affect the part's shrinkage and warpage. This book for all people who live and work with mold and shrinkage and warpage.\u003cbr\u003e\u003cbr\u003e\n\u003ch5\u003eTable of Contents\u003c\/h5\u003e\n1. Introduction to Plastics Processing\u003cbr\u003e1.1. Interactivity Basics \u003cbr\u003e1.2. Thermodynamic Principles Governing Injection Molding\u003cbr\u003e1.2.1 Filling\u003cbr\u003e1.2.2 Holding\u003cbr\u003e1.2.3 Cooling \u003cbr\u003e\u003cbr\u003e2. Shrinkage and Warpage\u003cbr\u003e2.1 Mold Shrinkage \u003cbr\u003e2.1.1 Determination of Shrinkage\u003cbr\u003e2.1.2 Molded-in Stress\u003cbr\u003e2.2 Warpage \u003cbr\u003e2.2.1 Common Causes of Non-Uniform Shrinkage\u003cbr\u003e2.2.2 principles of Minimizing Warpage \u003cbr\u003e2.3 Post-Mold Shrinkage \u003cbr\u003e\u003cbr\u003e3. Causes of Molded Part Variation - Part Design \u003cbr\u003e3.1 Wall Thickness\u003cbr\u003e3.2 Ribs\u003cbr\u003e3.3 Bosses\u003cbr\u003e3.4 Example of Proper Part Design\u003cbr\u003e3.5 Other Design Consideration \u003cbr\u003e\u003cbr\u003e4. Causes of Molded Part Variation - Material \u003cbr\u003e4.1 Amorphous and Semi-Crystalline Resins \u003cbr\u003e4.1.1 Amorphous Materials\u003cbr\u003e4.1.2 Semi-Crystalline Materials\u003cbr\u003e4.2 Effects of Fillers, Reinforcements, Pigments, Time and Stress\u003cbr\u003e4.2.1 Effects of Fillers and Fibers\u003cbr\u003e4.2.2 Minimizing the Effects of Fiber Reinforcements\u003cbr\u003e4.2.3 Effects of Pigments\u003cbr\u003e4.2.4 Effects of Time and Stress\u003cbr\u003e4.3 Shrinkage Prediction : Pressure-Volume-Temperature (PVT) Behavior \u003cbr\u003e4.3.1 PVT System Properties\u003cbr\u003e4.3.2 Predicting Mold Shrinkage\u003cbr\u003e4.3.3 Accuracy of Shrinkage Prediction \u003cbr\u003e\u003cbr\u003e5. Causes of Molded Part Variation - Mold Design \u003cbr\u003e5.1 Cavity Dimensions and Design Factors \u003cbr\u003e5.2 Gate Types\u003cbr\u003e5.2.1 Sprue Gate\u003cbr\u003e5.2.2 Pin, Pinpoint, Tunnel, and Submarine Gates\u003cbr\u003e5.2.3 Edge and Straight Gates\u003cbr\u003e5.2.4 Fan, Film, Diaphram, Ring, Disk, Cone, and Double-Sided Gates\u003cbr\u003e5.2.5 Multiple Gates\u003cbr\u003e\u003cbr\u003e5.3 Gate Location \u003cbr\u003e5.3.1 Side and End gates\u003cbr\u003e5.3.2 Determining Gate Position \u003cbr\u003e5.4 Gate Size \u003cbr\u003e5.5 Gate Design Systems\u003cbr\u003e5.6 Runner Design \u003cbr\u003e5.6.1 Multiple Cavity Molds\u003cbr\u003e5.6.2 Poor Ejection\u003cbr\u003e5.7 Mold Cooling Design\u003cbr\u003e5.7.1 Cooling Channels\u003cbr\u003e5.7.2 Effects of Corners\u003cbr\u003e5.7.3 Thickness Variations\u003cbr\u003e5.7.4 Runnerless Molds\u003cbr\u003e5.7.5 Slides\u003cbr\u003e5.7.6 Venting \u003cbr\u003e5.8 Mold Construction Materials\u003cbr\u003e5.9 Annealing \u003cbr\u003e5.10 Gas Assist \u003cbr\u003e5.11 Pitfalls to Avoid \u003cbr\u003e\u003cbr\u003e6. Causes of Molded Part Variation - Processing \u003cbr\u003e6.1 Molding Conditions\u003cbr\u003e6.1 (Injection melt Temperature) - if should be a separate section, renumber as 6.2 and renumber subsequent sections)\u003cbr\u003e6.2 Injection Rate\/Pressure\u003cbr\u003e6.2.1 Injection Speed\u003cbr\u003e6.2.2 Injection Pressure\u003cbr\u003e6.3 Holding Pressure\/Time\u003cbr\u003e6.3.1 Holding Pressure \u003cbr\u003e6.3.2 Holding pressure Time\u003cbr\u003e6.4 Mold Temperature\u003cbr\u003e6.4.1 Predicting mold Temperature Effects\u003cbr\u003e6.4.2 Relationship Between Mold Temperature and Wall Thickness\u003cbr\u003e6.5 Demolding Temperature\u003cbr\u003e6.6 Molded-in Stresses\u003cbr\u003e\u003cbr\u003e7. Factors Affecting Post-Mold Shrinkage\u003cbr\u003e7.1 Effects of Temperatures on Dimensions\u003cbr\u003e7.2 Effects of Moisture on Dimensions\u003cbr\u003e\u003cbr\u003e8. How to Control Mold and Post-mold Shrinkage and Warpage \u003cbr\u003e8.1 Find the Cause\u003cbr\u003e8.2 Part Geometry\u003cbr\u003e8.2.1 Overall Part Dimensions\u003cbr\u003e8.2.2 Wall Thickness\u003cbr\u003e8.2.3 Shrinkage Restricting Features\u003cbr\u003e8.3 Material Consideration\u003cbr\u003e8.3.1 Filler or Reinforcement Content\u003cbr\u003e8.3.2 Degree of Moisture Absorption\u003cbr\u003e8.4 Tooling Considerations \u003cbr\u003e8.4.1 Gate Locations\u003cbr\u003e8.4.2 Types and Sizes of Gates\u003cbr\u003e8.4.3 Runner Systems\u003cbr\u003e8.4.4 Mold Cooling Layout\u003cbr\u003e8.4.5 Tool Tolerances \u003cbr\u003e8.4.6 Draft Angles \u003cbr\u003e8.4.7 Ejection system Design\u003cbr\u003e8.4.8 Elastic Deformation of Mold\u003cbr\u003e8.4.9 Mold Wear\u003cbr\u003e8.4.10 Mold Contamination\u003cbr\u003e8.4.11 Position Deviations of Movable Mold Components\u003cbr\u003e8.4.12 Special Issues with Gears\u003cbr\u003e8.5 Processing Considerations\u003cbr\u003e8.5.1 Melt Temperatures and Uniformity \u003cbr\u003e8.5.2 Mold Temperatures and Uniformity \u003cbr\u003e8.5.3 Filling, Packing, and Holding Pressures\u003cbr\u003e8.5.4 Filling, Packing, and Holding Times\u003cbr\u003e8.5.5 Part Temperature at Ejection\u003cbr\u003e8.5.6 Clamp Tonnage\u003cbr\u003e8.5.7 Post-Mold Fixturing\/Annealing\u003cbr\u003e8.5.8 Special Problems with Thick Walls and Sink Marks\u003cbr\u003e8.5.9 Nozzles \u003cbr\u003e8.5.10 Excessive or Insufficient Shrinkage\u003cbr\u003e8.5.11 Secondary Machining\u003cbr\u003e8.5.12 Quality Control\u003cbr\u003e8.6 Controlling Warpage \u003cbr\u003e\u003cbr\u003e9. Computer Analysis\u003cbr\u003e9.1 How It Works\u003cbr\u003e9.1.1 Assumptions \u003cbr\u003e9.1.2 Generic Elements and Potential Limitations\u003cbr\u003e9.2 Does It Work \u003cbr\u003e9.2.1 Machine Settings and Controls\u003cbr\u003e9.2.2 Different Parts, Different Problems \u003cbr\u003e9.2.3 Differing Capabilities of Software\u003cbr\u003e9.3 What are Realistic Expectations of CAE?\u003cbr\u003e9.4 Resources\u003cbr\u003e9.4.1 How Much Does it Cost?\u003cbr\u003e9.4.2 Consultants \u003cbr\u003e9.5 OR Chapter 9 Appendix: Extended Illustration\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e10. Case studies\u003cbr\u003e10.1 Unexpected Housing Shrink and Combing of the Glass Fibers\u003cbr\u003e10.2 Changing Materials Triggers Warpage \u003cbr\u003e10.3 Thin-Molded Lids\u003cbr\u003e10.4 Oversize Part Injection Molding Alkyd Thermoset\u003cbr\u003e10.5 Inadequate Mold: Baby Dish\u003cbr\u003e10.6 Gas Entrapment: Baby Dish\u003cbr\u003e10.7 Sprue and Runners\u003cbr\u003e10.8 Spool Mold \u003cbr\u003e10.9 Thermoplastic Engineering Design Study \u003cbr\u003e10.10 CDs\u003cbr\u003e10.11 Flat Parts\u003cbr\u003e10.12 Electronic Connectors\u003cbr\u003eData\u003cbr\u003eGlossary\u003cbr\u003eAbbreviations \u003cbr\u003eReferences\u003cbr\u003eIndex\u003cbr\u003e\u003cbr\u003e\n\u003ch5\u003eAbout Author\u003c\/h5\u003e\nJerry Fischer, CEO of Tools and Troubleshooting, Inc., brings to this handbook over 35 years experience as a mold designer and builder and consultant on mold shrinkage and warpage conditions. In the 1980s, Jerry published two books with McGraw-Hill on computer-aided design."}