High-quality overmolding for pilot runs, low-volume production, and bridge tooling
Need overmolded parts that are truly custom? LK Tools supports overmolding programs from early prototypes through repeat low-volume production. We help you select compatible materials, confirm bonding strategy, and choose a tooling approach that matches your timeline and target quantity.
Overmolding combines two (or more) materials into one finished component. Most commonly, a soft elastomer (such as TPE/TPV) is molded onto a rigid substrate (often a thermoplastic). A familiar example is a tool or toothbrush handle that has a stiff core with a soft-touch grip. Overmolding improves ergonomics, sealing, grip, vibration damping, and cosmetics while reducing secondary assembly steps.
LK Tools can support more complex projects including insert loading, side actions (project-dependent), and designs that require careful gating, venting, and cosmetic control. Share your CAD, target use environment, and bonding/feel requirements and we’ll recommend a practical material + process path.
Overmolding material selection depends on required grip/durometer, chemical exposure, temperature, and the bonding method to the substrate (mechanical interlock, chemical adhesion, or both).
Common combinations (examples):
If you have a preferred resin grade or compliance requirement, include it in your request so we can confirm feasibility and availability.
Polish levels commonly used for molded parts—helpful for controlling gloss and appearance on rigid regions.
Standard molded surface based on tooling and resin; good for functional parts and quick-turn programs.
Texture options to improve grip, hide scuffs, reduce glare, or meet cosmetic targets (texture availability depends on design and tool).
Mold plastic around metal or threaded inserts to improve strength and reduce assembly steps.
Choose from millions of possible combinations of materials, finishes, tolerances, markings, and certifications for your order.
Get your parts delivered right to your door without the hassle of sourcing, project management, logistics, or shipping.
We are ISO 9001:2015, AS9100D, and ISO 13485 certified. Only the top molding shops that apply to become Suppliers make it through our qualification process.
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