http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Intro -- Preface -- Acknowledgments -- The Author -- Contents -- 1 Introduction -- 1.1 Benefits of Injection Molding -- 1.2 The Injection Mold -- 1.2.1 The Role of the Injection Mold -- 1.3 What Is an Injection Mold? -- 1.3.1 Elements of an Injection Mold -- 1.4 Classification of Molds -- 1.5 Continued Innovation in Molds and Hot Runners -- 1.6 The Injection Molding Machine -- 2 Overview of Plastics for Mold Design -- 2.1 What Is Plastic? -- 2.2 Plastics Terminology -- 2.3 Polymer Orientation -- 2.3.1 Shrinkage -- 2.3.2 Multiple Shrinkages -- 2.4 Additives
2.5 Mechanical Properties of Plastics -- 2.6 How Molten Plastics Behave -- 2.6.1 How Plastics Flow -- 2.6.2 Plastic Flow in Runners and Cavities -- 2.7 Degradation -- 2.8 Selection and Requirements for Plastic Materials -- 3 Plastic Part Design for Mold Designers -- 3.1 Plastic Part Drawing -- 3.2 Product Shape: How Can the Product Best Be Molded? -- 3.3 Parting Line (P/L) -- 3.4 Uniform Wall Thickness -- 3.5 L/t Ratio (Length of Flow Divided by Wall Thickness) -- 3.6 Drafts -- 3.7 Corners, Fillets, and Chamfers -- 3.8 Ribs and Bosses -- 3.9 Rim Designs -- 3.10 Stripped Undercuts
3.11 Sidewall Windows in the Part -- 3.12 Gate Location and Number of Gates -- 3.12.1 CAE Filling Analysis for Gate Location Optimization -- 3.12.2 Two or More Gates per Cavity - Large Products -- 3.12.3 Gate Dimple -- 3.12.4 Recessed Gate -- 3.12.5 Deep Undercuts and Mold Design Complexity -- 3.13 Re-Design of the Product to Avoid the Need for Side Cores -- 3.13.1 Selecting Other than the Conventional Parting Line -- 3.14 Shape of Threads and Undercuts -- 3.15 Need for Multi-Stage Ejection -- 3.16 Post-Molding Operations versus Mold Complexity
3.17 Plastic Part Tolerances and Effect on Mold Design -- 3.17.1 General and Specific Plastic Part Tolerances -- 3.17.2 Are Special Fits with Matching Products Required? -- 3.17.3 Tolerances for the Filling Volume -- 3.18 Stacking of Products and Free Dispensing -- 3.19 Deliberate Mismatches for Easy Mold Design -- 3.19.1 Mismatch at the Parting Line -- 3.19.2 Mismatch between Two Matching Pieces, such as Box and Lid -- 3.20 Surface Finish -- 3.20.1 Finish of Molding Surfaces -- 3.20.2 Texturing of Surfaces -- 3.21 Fitting Surfaces of Mold Parts -- 3.22 Engravings
3.22.1 Engravings versus Applied Labels -- 3.22.2 Two-Color and Two-Material Engraving -- 3.22.3 Depth of Engravings -- 3.22.4 Font Style and Size of Artwork -- 3.22.5 Polarity of Engraving -- 3.22.6 Are the Locations Selected for Engraving Practical? -- 3.22.7 Engravings in the Walls and Bottoms of Products -- 3.23 General Appearance of the Product -- 3.23.1 Flatness -- 3.23.2 Sinks and Voids -- 3.23.3 Witness Lines -- 3.23.4 Weld Lines -- 3.23.5 Surface Defects (Flow Marks, Splay, Record Grooves, Haze, Jetting, Hooks, and Ripples) -- 3.24 Identification of the Molded Piece
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