1;Contents;82;1 Principles of Mold Design;122.1;1.1 Types of Injection Molds;122.2;1.2 Types of Runners and Gates;132.2.1;1.2.1 Solidifying Systems;132.2.2;1.2.2 Hot Runner Systems;172.2.3;1.2.3 Cold Runner Systems;212.3;1.3 Temperature Control in Injection Molds;252.4;1.4 Types of Ejectors;272.5;1.5 Types of Undercuts;292.6;1.6 Special Designs;292.6.1;1.6.1 Molds with Fusible Cores;292.6.2;1.6.2 Prototype Molds of Aluminum;292.6.3;1.6.3 Prototype Molds Made of Plastics;302.7;1.7 Status of Standardization for Injection Molds;302.7.1;1.7.1 Standardized Mold Components (as of Mid-2005);312.7.2;1.7.2 Standardized Electrical Connections for Hot Runner Molds;312.7.3;1.7.3 Terminology Standards for Injection Molds;312.7.4;1.7.4 DIN ISO 16916 "Tools for Molding - Tool Specification Sheet for Injection Molds";332.8;1.8 Standard Mold Components;332.9;1.9 Injection Mold for Producing Test Specimens from Thermoplastic Resins;332.10;1.10 Materials Selection;342.10.1;1.10.1 General Requirements for Materials;342.10.2;1.10.2 Tool Steels;352.10.3;1.10.3 Non-Ferrous Metals;382.10.4;1.10.4 Anorganic Nonmetallic Materials;402.10.5;1.10.5 Surface Treatment Methods;402.11;1.11 Materials Properties under Mechanical Stress;432.11.1;1.11.1 Notch Effect under Static Stress;432.11.2;1.11.2 Notch Effect under Dynamic Stress;442.12;1.12 Thermal Insulation and Reflector Plates;452.13;References in Chapter 1;462.14;1.13 Further Reading on Injection Mold Construction;463;2 Special Design Features of the Example Molds;484;3 Examples;524.1;3.1 Single-Cavity Injection Mold for a Polyethylene Cover;524.2;3.2 Two-Cavity Injection Mold for Elbow Connector Made from PA 66;544.3;3.3 Injection Mold for the Body of a Tape-Cassette Holder Made from High-Impact Polystyrene;574.4;3.4 Five-Cavity Injection Mold for Tablet Tubes Made from Polystyrene;594.5;3.5 Four-Cavity Injection Mold for a Polyamide Joint Element;614.6;3.6 Mold Base with Interchangeable Inserts to Produce Standard Test Specimens;634.7;3.7 Two-Cavity Rotary Core Mold for a Polyacetal Pipe Elbow;654.8;3.8 Hot Runner Injection Mold for Car Front Fender;694.9;3.9 Injection Mold for Magnifying Glass Frame with Handle;714.10;3.10 16-Cavity Hot-Runner Mold for Cover Caps with Segmented Internal Contours Made from Polypropylene (PP) or Polyethylene (PE);734.11;3.11 Four-Cavity Injection Mold for a Housing Made from Acrylonitrile-Butadiene-Styrene (ABS);754.12;3.12 Four-Cavity Injection Mold for a Nozzle Housing Made from Polyamide;774.13;3.13 Single Split Cavity Mold for a Threaded Plug Made from Polyacetal (POM);794.14;3.14 Demolding a Polyethylene Container with External Undercuts;814.15;3.15 Injection Mold with Reduced Opening Stroke for Milk Crates from Polyethylene;814.16;3.16 Two-Cavity Injection Mold for Recessed Refrigerator Handles Made from Polyamide;834.17;3.17 Injection Mold for a Grass Catcher Made from Polypropylene;864.18;3.18 Injection Mold for Hose Connectors Made from Polyamide 6.6;884.19;3.19 Two-Cavity Injection Mold for the Coil Form of an Auxiliary Relay;904.20;3.20 Single-Cavity Hot-Runner Mold for Business Card Boxes Made from Polypropylene;924.21;3.21 8-Cavity Injection Mold for Threaded Rings Made from Polyacetal (POM);944.22;3.22 Mold for a Pump Housing and Pump Piston Made from Polyacetal;964.23;3.23 Hot-Runner Injection Mold for Two Film Spools Made from High-Impact Polystyrene;984.24;3.24 Injection Mold for an Angle Fitting from Polypropylene;1014.25;3.25 Mold for Bushings from Polyamide with Concealed Gating;1014.26;3.26 Injection Mold for the Valve Housing of a Water-Mixing Tap Made from Polyacetal;1024.27;3.27 Mold for a Lid with Three Threads Made from Polyacetal;1044.28;3.28 Two-Cavity Injection Mold for Coupling Sleeves Made from Polyamide;1064.29;3.29 Injection Mold for the Housing of a Polypropylene Vegetable Dicer;1084.30;3.30 Two-Cavity Injection Mold for a Polypropylene Toy Tennis Racket;1124.31;3.31 Two