http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Injection Mold Design Handbook will take the reader through the process of conceptualizing and designing an injection mold that will produce the desired plastic part. Since it all starts with the plastic part, the book will first focus on key features and details of the plastic part which are necessary for good mold design. The design of the main components of an injection mold will be discussed and good design practices will be shared. Finally the process of testing and gaining customer acceptance of the mold for production will be detailed. A comprehensive appendix and detailed drawings will provide the required detail for completing a mold design.
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
Description based upon print version of record.