High-volume consumer parts
Grips, caps and housings in steady large volumes.
Two-shot moulding · Rigid-soft two-shot
Rigid-soft two-shot moulding.
The rigid part and the silicone are moulded in one tool, one after the other, without ever leaving the machine. It's the most integrated way to combine hard and soft.
The detail
When two-shot beats overmoulding
Overmoulding takes a finished rigid part and adds silicone in a second tool. Two-shot does both in one machine. At high volumes, that removes handling, reduces contamination risk and gives a more consistent bond.
The price is tooling complexity: two-shot tools and machines cost more, and the design must suit both materials. We usually recommend two-shot only once volumes are well established. Below that, substrate overmoulding is often more sensible.
Where it fits
Where rigid-soft two-shot fits
Medical components
Integrated seals on rigid device parts.
Housings with seals
Seals formed directly on enclosure parts.
How we run it
How we deliver it
Material pairing
Thermoplastic and LSR grades chosen to bond and to survive each other's process.
Tool design
Rotating or transfer tool design, through our partner network where needed.
Process setup
Thermal separation between the hot silicone side and the cooler plastic side.
Bond checks
Batch bond tests recorded.
To quote it
To quote it
Both part designs
Rigid and soft.
Annual volume
Two-shot needs genuine volume to pay back.
Material preferences
Plastic grade if already chosen.
Bond requirement
How the part will be stressed.
At a glance
The idea in a picture.
How overmoulding works
Swipe to see the whole diagram
Questions
What people usually ask.
Do you run two-shot in-house?
We run it through a combination of our own capability and trusted partners, depending on the machine size needed. We'll be clear which applies to your part.
Can any plastic be used?
No. The plastic must tolerate silicone cure temperatures and bond to the chosen grade. We'll recommend suitable pairs.
Keep exploring
More from two-shot moulding.
Two-colour silicone
One silicone part, two colours or two hardnesses, with a clean line between them. Useful for keypads, straps, grips and seals with a soft…
Open this variantTwo-shot moulding overview
Two materials moulded in a single cycle on a press configured for both — usually a rigid plastic first, then silicone bonded onto it,…
Back to the overviewDesigned and developed in the UK. UK moulding capability, with some higher-volume production placed with trusted partners where that's the right commercial answer.
Get in touch
Tell us the part, the volume, and the timeline.
Rough annual volume, target unit price, and any deadlines. That's enough to work out whether compression, LSR injection or something else is the right tool.
Real people, a real workshop
You deal with the people who make it.
No call centre and no middlemen. When you contact TCI Products, you speak to the team who design, build and check your mould.
- A real Warwickshire workshopUnit 15, Waterloo Park, Bidford-on-Avon, Alcester B50 4JG.
- Real people on the phoneCall the team on 01789 224228, Monday to Friday.
- The same team on every jobDesign, production and aftercare come from the people you see here.
- Part of TCI GroupFive specialist brands, one engineering team. Visit TCI Group.
Thomas LaneManaging Director
George PrestonDesign & Project Manager
Kelly BallingerHead of Partnerships
Jim AndertonProduction Manager
TheodoreEmployee Welfare