Overmolding is often called two-shot injection molding since it consists of molding of one material over other(s) forming a multilayer part. The process involves injecting resin into a mold (substrate) to solidify, then using a second injection unit to apply resin over the already-hardened layer. Common applications include parts with rubber handles where rubber is injected over plastic substrates.
Materials commonly used
- Acrylonitrile Butadiene Styrene (ABS)
- High-density Polyethylene (HDPE)
- Polyether Ether Ketone (PEEK)
- Polyamide (Nylon)
- Polycarbonate (PC)
- Polyethylene (PE)
- Polyetherimide (PEI)
- Polybutylene Terephthalate (PBTR)
- Acrylic (PMMA)
- Polyoxymethylene (POM)
- Polypropylene (PP)
- Silicone (SI)
- Thermoplastic Elastomers (TPE)
- Thermoplastic Polyurethane (TPU)
- Thermoplastic Rubber (TPR)