Specialized injection molding techniques / edited by Hans-Peter Heim.
Special Injection Molding Techniques covers several techniques used to create multicomponent products, hollow areas, and hard-soft combinations that cannot be produced with standard injection molding processes. It also includes information on the processing techniques of special materials, including...
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| Online Access: |
Full Text (via ProQuest) |
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| Other Authors: | |
| Format: | eBook |
| Language: | English |
| Published: |
Oxford, UK :
William Andrew is an imprint of Elsevier,
[2015]
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| Series: | PDL handbook series.
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| Subjects: |
Table of Contents:
- Front Cover; Specialized Injection Molding Techniques; Copyright Page; Contents; List of Contributors; Preface; 1 Multicomponent Technologies; 1.1 Introduction; 1.2 Motivation; 1.3 Basic Bonding Mechanism; 1.3.1 Adhesion; 1.3.2 Diffusion; 1.3.2.1 Diffusion Theory-The Einstein Equation; 1.3.2.2 The Reptation Model; 1.4 Influences of Material and Process Control on the Basic Bonding Mechanism; 1.4.1 Interface Compatibility; 1.4.1.1 Surface and Interface Tension; 1.4.1.2 Crystallinity; 1.4.1.3 Molecular Weight; 1.4.1.4 Polarity; 1.4.1.5 Molecular Orientations.
- 1.4.1.6 Thermodynamic Compatibility/Miscibility1.4.1.7 Surface Pretreatment; 1.4.2 Interface Temperature; 1.4.2.1 Mass Temperature/Injection Sequence; 1.4.2.2 Mold Temperature; 1.4.2.3 Intermediate Cooling Time; 1.4.2.4 Contact Time; 1.4.3 Interface Stresses; 1.4.3.1 Shrinkage; 1.4.3.2 Connection Design/Interface Geometry; 1.4.3.3 Surface Roughness; 1.4.3.4 Mold Design; 1.4.3.5 Thermal Expansion Behavior; 1.4.3.6 Injection and Holding Pressure; 1.4.3.7 Injection Speed; 1.5 Machines and Processes; 1.5.1 Material Combination-The Example of Assembly Injection Molding.
- 1.5.2 Point of Material Joining1.5.2.1 Joining Materials in the Tool-The Example of Bi-injection; 1.5.2.2 Joining the Materials in the Nozzle or in the Barrel in Front of the Screws-The Sandwich Technique; 1.5.2.2.1 Sandwich Technique-General Information; 1.5.2.2.2 The Basic Sandwich Method; 1.5.2.2.3 Monosandwich Method; 1.5.2.3 Combining Materials via the Material Feed-The Marbling Technique; 1.5.3 Injection Sequence; 1.5.3.1 Simultaneous Process Control; 1.5.3.2 Sequential Process Control; 1.5.4 Tool Technologies; 1.5.4.1 Slider Technology; 1.5.4.2 Transfer Process; 1.5.4.3 Rotary Disk.
- 1.5.4.4 Index Plate1.5.4.5 Linear Systems; 1.5.4.6 Horizontal Turning Technologies (Stack Turning Technologies); References; 2 Foam Injection Molding; 2.1 Why Foam Injection Molding?; 2.1.1 General Idea; 2.1.2 Typical Applications; 2.2 Foaming Mechanism; 2.2.1 Solubility and Diffusion; 2.2.2 Nucleation; 2.2.3 Cell Growth; 2.2.4 Stabilizing Effects; 2.2.5 Physical and Chemical Blowing Agents; 2.2.5.1 Physical Blowing Agents; 2.2.5.2 Chemical Blowing Agents; 2.2.6 Morphology of Foams; 2.2.7 Mechanical and Optical Properties; 2.2.7.1 Mechanical Properties; 2.2.7.2 Optical Properties.
- 2.3 Process Route2.3.1 From Granules to Technical Parts; 2.3.1.1 Foaming Using Chemical Blowing Agents; 2.3.1.2 Foaming Using Physical Blowing Agents; 2.3.1.3 Static Mixing Elements for Distributing Gas in the Melt; 2.3.1.4 Standard Tool Technique; 2.3.2 Most Relevant Process Parameters; 2.3.2.1 Types of Blowing Agents; 2.3.2.1.1 Chemical Blowing Agent; 2.3.2.1.2 Physical Blowing Agents; 2.3.2.2 Blowing Agent Concentration; 2.3.2.3 Mass Temperature; 2.3.2.4 Mold Temperature; 2.3.2.5 Injection Speed; 2.3.2.6 Back Pressure; 2.4 Variants of Foaming Techniques; 2.4.1 Tools with Decompression.