http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Intro -- The Author -- Preface -- Contents -- 1 The Injection Molding Process -- 1.1 Process Flow -- 1.2 The Machine and Plant Technology -- 1.2.1 Clamping Unit -- 1.2.2 Injection Unit -- 1.2.3 Drive -- 1.2.4 Controls -- 2 Technical Jargon -- 2.1 Injection Molding Machine -- 2.2 Mold -- 2.3 Injection Molding Process -- 2.4 Plastic Material -- 3 Setting the Process Variables -- 3.1 Basic Information for the Initial Settings -- 3.1.1 Shot Weight -- 3.1.2 Flow Path Length -- 3.1.3 Average Wall Thickness -- 3.1.4 Plastic to Be Processed -- 3.1.5 Class of Molded Part
3.1.6 Projected Area of the Molded Part -- 3.2 Initial Setting -- 3.2.1 Temperature -- 3.2.1.1 Melt Temperature, Processing Temperature -- 3.2.1.2 Mold Temperature -- 3.2.1.3 Nozzle Temperature/Hot Runner Temperature -- 3.2.2 Metering -- 3.2.3 Injection and Holding Pressure -- 3.2.3.1 Injection Process -- 3.2.3.2 Switchover to Holding Pressure -- 3.2.3.3 Holding Pressure Process -- 3.2.4 Cooling Time -- 3.3 Correcting the Initial Settings -- 3.3.1 First Correction Step (without Holding Pressure) -- 3.3.2 Second Correction Step (with Holding Pressure) -- 3.4 Optimization of the Initial Settings
3.4.1 Incomplete Cavity Filling -- 3.4.2 Sink Marks -- 3.4.3 Flash -- 3.4.4 Visible Weld Lines -- 3.4.5 Jetting -- 3.4.6 Grooves (Vinyl Record Effect) -- 3.4.7 Surface Streaks -- 3.4.8 Burn Marks (Diesel Effect) -- 3.4.9 Dull Spots Near the Gate -- 3.4.10 Differences in Surface Gloss -- 4 Plastic Properties Relevant to Injection Molding -- 4.1 Flow Properties of Plastics -- 4.1.1 Relationship between Pressure and Velocity (Hagen-Poiseuille) -- 4.1.2 Viscosity -- 4.1.2.1 Influence of the Shear Rate on the Viscosity -- 4.1.2.2 Influence of Temperature on Viscosity
4.1.3 Combined Influence of Speed and Temperature (Bathtub Curve) -- 4.1.4 Fountain Flow -- 4.1.5 Troubleshooting with Flow Trace Analysis -- 4.2 Process Sequence for Injection and Holding Pressure -- 4.2.1 Relationship between Specific Pressure, Volume and Temperature (pvT Diagram) -- 4.2.2 Pressure-Time Graph, Pressure Curves -- 4.2.3 Injection Speed -- 4.2.4 Holding Pressure Phase -- 4.2.4.1 Holding Pressure Time -- 4.2.4.2 Holding Pressure Level -- 4.3 Design of Molded Parts -- 4.3.1 Flow-Path/Wall-Thickness Ratio -- 4.3.2 Filling Pattern -- 4.3.2.1 Weld Lines and Flow Lines -- 4.3.2.2 Folds
4.3.2.3 Burners/Diesel Effect -- 4.3.2.4 Poorly Filled Areas -- 4.4 Inner Properties of Plastics -- 4.4.1 Orientations -- 4.4.2 Stresses -- 4.4.3 Crystallization -- 4.5 Temperatures and Heat Processes in Plastics -- 4.5.1 Cooling (Calculation) -- 4.5.2 Cooling Properties, Weld Line Strength -- 4.5.3 Influence of Mold Temperature on Molded Part Dimensions -- 4.5.4 Temperature Equilibrium -- 4.5.5 Melting Temperature, Processing Temperature -- 4.5.6 Influence of Temperature on Demolding and General Demolding Problems -- 4.5.7 Dwell Time and Material Degradation
Description based upon print version of record.