Troubleshooting the extrusion process: a systematic approach to solving plastic extrusion problems
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Munich [u.a.]
Hanser
2001
Cincinnati Hanser/Gardner |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | X, 158 S. Ill., graph. Darst. |
| ISBN: | 3446217665 1569903204 |
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MARC
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| 245 | 1 | 0 | |a Troubleshooting the extrusion process |b a systematic approach to solving plastic extrusion problems |c Chris Rauwendaal and Maria del Pilar Noriega E. |
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Record in the Search Index
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| adam_text | Contents
1 Requirements for Efficient Troubleshooting 1
1.1 Instrumentation 1
1.2 Understanding the Extrusion Process 2
1.3 Collection and Analysis of Historical Data (Time Line) 2
1.4 Team Building 4
1.5 Condition of the Equipment 4
1.6 Information about the Feed Stock 4
2 Tools for Troubleshooting 7
2.1 Temperature Measurement Devices 7
2.2 Data Acquisition Systems 7
2.2.1 Portable Data Collectors/Machine Analyzers 8
2.2.2 Fixed-Station Data Acquisition Systems 9
2.3 Light Microscopy 11
2.4 Thermochromic Materials 12
2.5 Thermal Analysis 13
2.5.1 Differential Thermal Analysis and Differential Scanning
Calorimetry 13
2.5.2 Thermogravimetric Analysis 15
2.5.3 Fourier Transform Infrared Spectroscopy 16
2.5.4 Thermomechanical Analysis 17
2.5.5 Torque Rheometer 17
2.5.6 Other Thermal Characterization Techniques 18
2.6 Miscellaneous Tools 19
3 Systematic Troubleshooting 21
3.1 Upsets versus Development Problems 21
3.2 Machine-Related Problems 21
3.2.1 The Drive System 21
3.2.2 The Feed System 23
3.2.3 The Heating and Cooling System 23
3.2.4 Wear Problems 24
3.2.4.1 Wear Mechanisms 25
3.2.4.2 Test Methods for Wear 26
3.2.4.3 Causes of Wear 30
3.2.4.4 Solutions to Wear Problems 36
3.2.4.5 Rebuilding Worn Screws and Barrels 41
3.2.5 Screw Binding 45
3.2.5.1 Introduction 45
3.2.5.2 The Mechanics of Screw Binding 45
3.2.5.3 Changes in Clearance Due to Temperature Differences 46
viii Contents
3.2.5.4 Analysis of Temperature Distribution in Extruder Screws ... 48
3.2.5.5 Change in Clearance Due to Compressive Load 49
3.2.5.6 Results from Analysis 49
3.3 Polymer Degradation 50
3.3.1 Types of Degradation 50
3.3.1.1 Thermal Degradation 51
3.3.1.2 Mechanical Degradation 51
3.3.1.3 Chemical Degradation 52
3.3.2 Degradation in Extrusion 54
3.3.2.1 Residence Time Distribution 54
3.3.2.2 Temperature Distribution Simple Calculations 58
3.3.2.3 Temperature Distribution Numerical Calculations 62
3.3.2.4 Reducing Degradation 70
3.4 Extrusion Instabilities 71
3.4.1 Frequency of Instability 71
3.4.1.1 High-Frequency Instabilities 72
3.4.1.2 Screw Frequency Instabilities 75
3.4.1.3 Low-Frequency Instabilities 76
3.4.1.4 Very Slow Fluctuations 77
3.4.1.5 Random Fluctuations 77
3.4.2 Functional Instabilities 79
3.4.2.1 Solids-Conveying Instabilities 79
3.4.2.2 Plasticating Instabilities 79
3.4.2.3 Melt-Conveying Instabilities 80
3.4.2.4 Devolatilization Instabilities 81
3.4.2.5 Mixing Related Instabilities 81
3.4.2.6 Distributive Mixing Sections 81
3.4.2.7 Dispersive Mixing Sections 86
3.4.2.8 Solving Mixing Problems 92
3.4.3 Solving Extrusion Instabilities 93
3.5 Air Entrapment 95
3.6 Gel Problems 96
3.6.1 Measuring Gels 97
3.6.2 Gels Created in the Extrusion Process 98
3.6.3 Removing Gels Produced in Polymerization 99
3.7 Die-Flow Problems 100
3.7.1 Melt Fracture 100
3.7.2 Die-Lip Buildup ( Die Drool ) 102
3.7.3 V-or W-Patterns 103
3.7.4 Specks and Discoloration 103
3.7.5 Lines in Extruded Product 104
3.7.5.1 Weld Lines 104
3.7.6 Optical and Appearance Properties 105
4 Case Studies 107
4.1 Film Coextrusion—Degradation in the Middle Layer 107
4.1.1 Description of the Problem 107
Contents ix
4.1.2 Analysis of the Problem 107
4.1.3 Solution 108
4.2 Film Coextrusion with Interfacial Problems 110
4.2.1 Description of the Problem 110
4.2.2 Analysis of the Problem 110
4.2.3 Solution Ill
4.3 Lines in the Extruded Film Ill
4.3.1 Description of the Problem Ill
4.3.2 Analysis of the Problem 112
4.3.3 Solution 112
4.4 Color Variation in Polypropylene Carpet Fiber 113
4.4.1 Description of the Problem 113
4.4.2 Analysis of the Problem 114
4.4.3 Solution 114
4.5 Plastic Film with Poor Transparency 116
4.5.1 Description of the Problem 116
4.5.2 Analysis of the Problem 116
4.5.3 Solution 118
4.6 Wear Problem in Film Extrusion 118
4.6.1 Description of the Problem 118
4.6.2 Solution 119
4.7 Multilayer Film—Several Appearance Problems 119
4.7.1 Problem Description 119
4.7.2 Analysis of the Problem 120
4.7.3 Solution 120
4.8 Dispersion Problem in a High-Density Polyethylene Bottle 121
4.8.1 Description of the Problem 121
4.8.2 Analysis of the Problem 122
4.8.3 Solution 122
4.9 Polymer Degradation 124
4.9.1 Description of the Problem 124
4.9.2 Analysis of the Problem 124
4.9.3 Solution 126
4.10 Heat-Sealing Problems in a Coextruded Film 128
4.10.1 Problem Description 128
4.10.2 Analysis of the Problem 128
4.10.3 Solution 129
4.11 Output Problem in a Blown Film Line 130
4.11.1 Description of the Problem 130
4.11.2 Analysis of the Problem 131
4.11.3 Solution 132
4.12 Master Batch Selection 133
4.12.1 Description of the Problem 133
4.12.2 Analysis of the Problem 134
4.12.3 Solution 135
4.13 Pipe Extrusion Problem 136
4.13.1 Description of the Problem 136
4.13.2 Analysis of the Problem 136
4.13.3 Solution 136
x Contents
References 139
Appendices 143
Appendix 1 Systematic Problem Solving 143
Appendix 2 Machine Troubleshooting and Maintenance 145
2.1 Check the Oil 145
2.2 Unusual Noises 146
2.3 Vibration Monitoring 146
2.4 Drive Motors and Belts 147
2.5 Spare Parts 148
2.6 Screw and Barrel 148
2.7 Extruder Maintenance Checklist 148
Appendix 3 Setting Extruder Temperatures 153
Index 155
|
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| dewey-raw | 668.4/13 |
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| dewey-tens | 660 - Chemical engineering |
| discipline | Chemie / Pharmazie Werkstoffwissenschaften Chemie-Ingenieurwesen Werkstoffwissenschaften / Fertigungstechnik |
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| indexdate | 2024-07-09T18:53:11Z |
| institution | BVB |
| isbn | 3446217665 1569903204 |
| language | English |
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| publisher | Hanser Hanser/Gardner |
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| spelling | Rauwendaal, Chris Verfasser aut Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems Chris Rauwendaal and Maria del Pilar Noriega E. Munich [u.a.] Hanser 2001 Cincinnati Hanser/Gardner X, 158 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Plastics Extrusion Extrudieren (DE-588)4071089-0 gnd rswk-swf Fehlersuche (DE-588)4016615-6 gnd rswk-swf Störung (DE-588)4133232-5 gnd rswk-swf Extrudieren (DE-588)4071089-0 s DE-604 Störung (DE-588)4133232-5 s Fehlersuche (DE-588)4016615-6 s Noriega Escobar, Maria del Pilar Verfasser aut HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009475105&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Rauwendaal, Chris Noriega Escobar, Maria del Pilar Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems Plastics Extrusion Extrudieren (DE-588)4071089-0 gnd Fehlersuche (DE-588)4016615-6 gnd Störung (DE-588)4133232-5 gnd |
| subject_GND | (DE-588)4071089-0 (DE-588)4016615-6 (DE-588)4133232-5 |
| title | Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems |
| title_auth | Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems |
| title_exact_search | Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems |
| title_full | Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems Chris Rauwendaal and Maria del Pilar Noriega E. |
| title_fullStr | Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems Chris Rauwendaal and Maria del Pilar Noriega E. |
| title_full_unstemmed | Troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems Chris Rauwendaal and Maria del Pilar Noriega E. |
| title_short | Troubleshooting the extrusion process |
| title_sort | troubleshooting the extrusion process a systematic approach to solving plastic extrusion problems |
| title_sub | a systematic approach to solving plastic extrusion problems |
| topic | Plastics Extrusion Extrudieren (DE-588)4071089-0 gnd Fehlersuche (DE-588)4016615-6 gnd Störung (DE-588)4133232-5 gnd |
| topic_facet | Plastics Extrusion Extrudieren Fehlersuche Störung |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009475105&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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