Molding Guidelines
RTP Company provides complete technical support for our specialty compounds, through experienced staff located at each of our eight worldwide plants. Our technical service personel can evaluate mold design and setup, optimize processing conditions based on material, assist with handling new materials, and investigate and resolve problems.
- Standard Molding Equipment
- Machine Type
- Machine Size
- Molding Conditions
- Drying
- Barrel Temperature
- Melt Temperature
- Mold Temperature
- Injection Pressure
- Back Pressure
- Injection Speed
- Screw RPM
- General Processing Tips
- Compounds with Fillers
- Compounds with Fibers
- Tips to Improve Mechanical Properties
- Tensile Strength
- Tensile Elongation
- Flexural Modulus
- Flexural Strength
- Notched IZOD Impact
- Shrinkage
- Warpage
- Regrind Usage
- Tips to Improve Surface Conductivity
- Compounds with Conductive Fillers
- Compounds with Conductive Fibers
- Thermoplastic Elastomer Molding Guidelines
- Long Fiber Compounds Molding Guidelines
- Foaming Agent Molding Guidelines
Mold Design
Injection molds must be properly designed to ensure quality plastic components. Mold design impacts productivity and profitablity of your molding operation. This section offers guidelines for designing an effcient injection mold.
- Sprue/Cold Material Trap
- Runner Design
- Gate Design
- Submarine or Tunnel Gate
- Pinpoint or Restricted Gate
- Fan or Edge Gate
- Tab Gate
- Sprue Gate
- Flash Gate
- External Ring Gate
- Internal Ring Gate
- Thick to Thin Wall Gating
- Adjoining Walls
- Ribs
- Bosses & Gussets
- Two Plate Mold
- Three Plate Mold
- Insulated Runner Mold
- Venting & Cooling Design
- Living Hinge Design
Guidelines for Plastic Design
Overview of application and/or part design considerations that should be taken into consideration working with thermoplastic compounds and the injection molding process to eliminate common problems.

![[Trouble Guide]](../../graphics/callout/molding-trouble2.gif)
![[Processing Guide]](../../graphics/callout/molding-quick2.gif)
![[Molding Guides]](../../graphics/callout/molding-guides2.gif)