
Injection Overmolding Services
Enhancing the ergonomics and aesthetic appeal of a product often requires the combination of different materials, which is where our professional injection overmolding services excel. Overmolding is a sophisticated process where a "soft" material (usually TPE or TPU) is molded directly onto a "hard" plastic or metal substrate. This isn't just about glue; it's about a chemical and mechanical bond that creates a seamless, durable finish. We have mastered this technique to provide our clients with "soft-touch" grips for home appliances and vibration-dampening seals for industrial equipment. In a recent project for a robotic dog component, we utilized "injection overmolding services" to bond protective nylon rollers with a high-friction outer layer, ensuring the robot could navigate smooth surfaces without slipping.
The challenge with overmolding is preventing delamination and ensuring a perfect seal at the parting line. Our factory's 11 years of experience allow us to calibrate the exact temperatures and pressures needed to achieve a permanent bond. We utilize high-precision CNC machining to create the complex molds required for "injection overmolding services," ensuring that the insert is perfectly positioned every time. This level of detail is why major automotive brands trust us for their interior components and buffer caps. By integrating multiple parts into a single overmolded component, we help our customers reduce assembly costs and eliminate potential points of failure, delivering a product that feels premium and performs reliably in the field.

Specifications
|
Common Hard Base Materials |
ABS, PC, PP, POM, Nylon |
|
Common Overmold Materials |
TPE, TPU, TPV |
|
Machine Type |
Two-shot or standard with specialized inserts |
|
Quality Check |
Peel test before production, 100% final check |
|
Sample Time |
1 day minimum for simple samples |
|
Lead Time |
~15-20 days for complex overmold tools |
Application Areas
Our overmolding capabilities are vital for the power tool industry (grips and handles), medical device housings that require a sealed, non-slip exterior, and high-end home appliances like electric kettle lids with integrated seals. It is also widely used in automotive interiors to provide a soft-touch feel to plastic dashboard components.
Customization Capability
We offer full ODM support for overmolding projects. Our engineers can help you choose the right material pair (e.g., PC+TPE) to ensure maximum adhesion. We can customize the shore hardness of the "soft" layer to meet your specific tactile requirements, from "gel-like" softness to a firm, rubberized grip.
Packaging & Logistics
Overmolded parts often have sensitive surface finishes. We use individual cell packaging or protective film to ensure that the soft-touch surfaces are not marred or stained during transit. We offer flexible shipping terms including FOB and EXW to meet your logistics needs.
FAQ
Q: Can you overmold onto metal parts?
A: Yes, we frequently overmold plastic onto hardware components, which is a common requirement for robotic parts and industrial hand tools.
Q: What is the typical MOQ for overmolded parts?
A: While we can do small runs (MOQ 1), the process is most cost-effective at quantities over 1,000 units due to the complexity of the secondary molding setup.
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