Overmolding Services in Canada
Overmolding bonds a second material onto a first in a controlled molding process — typically a softer elastomer (TPE, TPU, silicone) molded over a rigid plastic substrate. The result is a single integrated part with multiple functional zones: a hard structural core with a soft grip, a metal threaded insert with a sealed plastic body, or a co-molded gasket integrated into a housing. Canadian overmolding capacity supports consumer products, medical devices, automotive components, and industrial tooling.
Overmolding in Canada
Overmolding is what makes modern consumer products feel premium. A toothbrush handle’s soft grip, a power tool’s rubberized housing, a medical device’s gasket — these are all overmolded parts where a softer, grippier, sealing material has been molded directly onto a rigid plastic core. Canadian overmolding capacity is concentrated in Ontario and Quebec, with strong support from the automotive and consumer products industries.
Where Overmolding Wins
Soft-touch grips and ergonomic surfaces. Power tools, kitchen utensils, electronics housings, and sporting goods all use overmolded TPE or TPU for tactile quality.
Integrated seals and gaskets. Co-molded silicone or TPV gaskets eliminate assembly steps and ensure consistent seal placement.
Multi-material consumer products. Toothbrushes, razors, kitchen appliances, and personal care items where soft and rigid zones improve function and feel.
Medical device housings. Soft-touch handles on surgical instruments, sealed enclosures for electronic medical devices, biocompatible silicone overmolds on PEEK or rigid plastic substrates.
Two-Shot vs. Insert Overmolding
| Method | Volume | Tooling Cost | Consistency |
|---|---|---|---|
| Two-shot (2K) | High volume | High | Excellent |
| Insert overmolding | Low-medium | Moderate | Good |
For high-volume consumer products, two-shot tooling pays back in cycle-time and yield. For low-to-medium volumes, insert overmolding lowers the up-front investment.
Canadian Overmolding Network
Our Canadian overmolding network includes shops with two-shot machines for high-volume consumer products, insert-overmolding cells for medium-volume industrial work, and ISO 13485-certified medical molders for biocompatible silicone-on-PEEK and similar applications.
Overmolding at a Glance
- ISO 9001:2015
- ISO 13485 (Medical)
- IATF 16949 (Automotive)
- FDA Compliant Materials
- USP Class VI
Available Materials
Industries We Serve
Frequently Asked Questions
What's the difference between overmolding and two-shot molding?
How do I know which materials will bond?
Can metal inserts be overmolded into plastic parts?
What's a typical tooling cost for overmolding?
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