Multi-colour keypads
Keys in one colour, mat in another.
Two-shot moulding · Two-colour silicone
Two-colour and dual-hardness 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 face and a firm body.
The detail
Two zones, one part
Silicone bonds to silicone well, so combining two colours or two hardnesses in one part is very achievable. The challenge is the line where they meet: keeping it crisp, in the right place, and consistent from part to part.
Depending on the part and volume, we mould the second zone in the same tool or a second tool, or build the colour separation into compression moulding with pre-forms.
Where it fits
Typical two-zone parts
Straps and bands
Contrasting inner and outer faces.
Dual-hardness seals
A soft sealing face on a firmer body.
How we run it
How we do it
Line definition
Where the two zones meet, designed so it can be moulded crisply.
Process choice
Two-shot, two-stage or compression pre-form, based on volume.
Colour recipes
Both colours matched and recorded.
Visual inspection
Line position and cleanliness checked per batch.
To quote it
To quote it
The part with zones marked
Colour or hardness boundaries.
Colour references
Physical samples.
Volume
Decides the process.
Tolerance for line variation
How crisp the boundary must look.
Questions
What people usually ask.
Can two colours bleed into each other?
Poorly controlled, yes. Good tool design and process control keep the line crisp.
Is dual-hardness worth it?
When a single hardness forces a compromise between sealing and structure, often yes.
Keep exploring
More from two-shot moulding.
Rigid-soft two-shot
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…
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