Mold Design

• Injection Molding Processes
  • (see Production Processes)
  • Other Molding Processes (see Production Processes)
• Injection Molding Machine Components
  • Hopper
  • Injection Cylinder
  • Screw Drive Motor
  • Barrel
  • Screw
    • Flights
  • Nozzle
  • Platens
    • Fixed Platen
    • Movable Platen
  • Mold
  • Clamp
• Moldable materials
  • Shrinkage Factors
  • Temperature Considerations
  • Fill Characteristics
    • See: Reference
• Mold Machine Options
• Molded Part Design Guidelines
  • Moldability
    • Tolerances
      • Dimensional Stability
  • Draft Angles
  • Wall Thickness
  • Features
    • Holes
    • Corners & Radii
    • Ribs
    • Gussets
    • Bosses
    • Threads
    • Undercuts
    • Snap Fits
• Injection Mold Design
  • Mold Material
  • Injection Molding Process
  • Mold Components
    • Mold Base
    • A side (typical)
      • Top Clamping Plate
      • Locating Ring
      • Sprue Bushing
      • Mold Cavity
    • B Side (typical)
      • Mold Core
      • Ejector Pins
      • Ejector Plate
    • Common
      • Vents
        • Purpose
        • Vent Land
        • Vent Relief
        • Pin Vents
      • Inserts
        • Date
        • Recycling
      • Runners
        • Configuration
          • Round
          • Half-Round
          • Trapezoidal
        • Cold Slug Wells
      • Gates (see)
        • Diaphragm Gate
        • Direct Gate
        • Edge Gate
        • Pin Gate
        • Ring Gate
        • Tab Gate
        • Fan Gate
        • Film Gate
        • Reverse Taper Sprue Gate
        • Submarine Gate
        • Winkle Gate
    • Cooling
      • See
        • (cooling systems)
        • Cooling
        • Die Mold Equipment
      • Insulator Sheets
      • Water Cascades/bubblers
      • Thermal Pins
      • Heat Transfer Pipes
      • Hoses
      • Fittings
      • Flow Meters
      • Regulators
      • Baffles
        • Straight
        • Spiral
        • Turbulent flow
    • Undercuts
      • Slides, Cores
        • Angle Pins
        • Collapsible cores
      • Unscrewing Mechanisms (see)
      • Bumpoffs
      • Pickouts, Inserts (see)
• Mold Surface Finish
  • Methods
    • Chemical Etching (see)
    • Media Blasting
    • EDM Etch
    • Laser Ablation (see)
  • Polish & Textures
    • Polish
    • Matte
    • Blasted
    • Geometric Lines
    • Etched
  • Disadvantages
    • Draft Angle Requirements
    • Difficult to repair
  • SPI Mold Surface
  • Mold Tech (Standex, see)
  • Yick Sang Textures (see)
  • VDI Standards
• Mold Configurations
  • MUD (Master Unit Die)
  • Two Plate
  • Three Plate
  • Hot Runner
  • Insulated Runner

References

Fattori, Jim. “Part 1: How to Properly Size Gates, Runners and Sprues.” Plastics Technology, www.ptonline.com/blog/post/part-1-how-to-properly-size-gates-runners-and-sprues.