Two-cavity container mold
A compact two-cavity tool for cups and containers, with balanced cooling and a polished cavity finish for a clean visible surface.
Products · Overmolding parts
Plastic and silicone over-moulded part
A rigid moulding with a soft silicone element bonded in place — two materials, one component, no assembly step.
Also searched asOvermolding · over-molding · two-shot molding · insert molding · TPE overmold · silicone overmolding
Over-molding a soft element onto a rigid part removes an assembly step and stops the soft part from falling off in use. The engineering is in the bond: material pair, wall thickness over the substrate, surface preparation and the mould temperature at the interface.
We design the substrate, the second-shot tool and the mechanical interlock as one system, and specify both materials with you before design approval. The part in the photograph pairs a rigid housing with a soft elastomer insert.
Typical applications
- Grip and handle components
- Seals moulded onto rigid parts
- Kitchen and household tools
- Soft-touch consumer products
Specification
What this class of part is built to
One tool, two materials. The table below is what we confirm line by line on the design approval sheet before machining starts.
| Construction | Two-shot tool, insert overmold or transfer overmold — chosen by volume |
| Substrate | ABS, PC, PA, PBT, POM, or a metal insert / bush / PCB |
| Second material | TPE, TPU, TPR or LSR / HTV silicone, 30–80 Shore A |
| Bond | Mechanical interlock plus chemical adhesion; both materials agreed in DFM |
| Mold work tolerance | ±0.01 mm |
| Tooling | P20, 718H, NAK80 or S136, with hardened inserts at the shut-offs |
| Molding | 30 presses from 20T to 300T, in the same building |
| Verification | Swiss Hexagon CMM and Zeiss Contura; pull and peel checks at T1 |
Values above are our standard capability, not fixed figures for a specific project. Both materials, the interlock geometry and the test plan are agreed before steel is cut.
Related products · Overmolding Parts
More from the Overmolding Parts range
Injection mold with polished cavity and core
A two-plate production mold with mirror-polished cavity and core plates, built for visible Class-A surfaces.
Injection mold with side-action slides
Undercuts solved with cam-driven slides rather than a redesign — for parts with side holes, clips, snap hooks or external features.
Next step
Ask for a DFM review and a price for your part
STEP/IGES/X_T files, the resin, your annual volume and target market are enough to get a mold price, a cycle estimate and the risks we can see — usually in 1–2 business days.