Elastomeric Over-Molding
Create models that look like they just came off the production line.
Elastomeric Over-Molding
Elastomeric over-molding (elastomer over-molding) is a process in which a softer layer of material is bonded to harder substrate or structural component of a part. It can be used to improve functionality or to change the look of a part.
Overmolding can deliver a wide range of product benefits such as:
- Textures that make hand held items easier to hold and use.
- Vibration and noise reduction.
- Greater electrical resistance.
- Increase shock absorbency.
Over-Molding Part Design Considerations
- The wall thickness of the substrate and over-mold should be as uniform as possible.
- Keeping 0.5 MM minimum in corners reduces localized stresses.
- Avoid deep or un-ventable blind pockets or ribs.
- Transitions between wall thicknesses should be gradual to reduce flow problems.
- The elastomeric over-molding section should be less thick than the substrate to prevent warpage, especially critical for long, flat geometries.
- Design in a mechanical interlock when possible.
