๐จ Overmolding Services
Soft-Touch Surfaces | Enhanced Ergonomics | Multi-Material Design
Overview
Overmolding is a specialized injection molding process where a layer of material (typically soft TPE or TPU) is molded over a rigid substrate to create a single integrated part. This process adds soft-touch surfaces, improves grip, provides sealing, and enhances product aesthetics without secondary assembly operations.
Our overmolding capabilities serve consumer electronics, automotive, medical devices, and industrial tools. We work with various substrate materials including plastics, metals, and existing molded parts to add functional or decorative overmold layers.
โ Key Advantages
- Enhanced User Experience: Soft-touch grip, improved comfort
- Water Resistance: Integrated seals and gaskets
- Vibration Dampening: Reduced noise and vibration transmission
- Aesthetic Appeal: Premium look and feel, brand differentiation
Overmolding Capabilities
| Parameter | Capability | Application |
|---|---|---|
| Substrate Materials | Plastic, Metal, Existing Parts | Various bases |
| Overmold Materials | TPE, TPU, Silicone, Rubber | Soft-touch applications |
| Shore Hardness | Shore A 10 โ 90 | Ultra-soft to firm |
| Overmold Thickness | 0.5mm โ 10mm | Thin films to thick grips |
| Bond Strength | Chemical + Mechanical | Permanent adhesion |
๐ง Overmolding Process
Method 1: Two-Shot Overmolding
Completed in a single cycle using a rotary molding machine. The substrate is molded first, then the mold rotates and overmold material is injected. Best for high-volume production with excellent registration.
Method 2: Pick-and-Place Overmolding
Pre-molded substrates are placed into the mold manually or robotically, then overmold material is injected. Suitable for lower volumes or when substrates are metal/existing parts.
Method 3: Manual Insert Overmolding
For prototypes and low volumes, inserts are placed manually before overmolding. Cost-effective for small batches and design validation.
๐ก Design Tip
Mechanical interlocks (dovetails, undercuts, holes) significantly improve bond strength. Our engineers provide free DFM analysis to optimize your overmold design for maximum adhesion.
๐ฆ Material Combinations
Plastic + TPE/TPU
- PP + TPE: Consumer products, grips, seals
- ABS + TPU: Electronics housings, protective cases
- PC + TPE: Medical devices, wearable products
- PA + TPU: Automotive components, industrial tools
Metal + Plastic
- Aluminum + TPE: Tool handles, consumer products
- Stainless Steel + PPS: High-temperature applications
- Brass + PBT: Electrical connectors, valves
๐ฏ Industry Applications
| Industry | Typical Parts | Benefits |
|---|---|---|
| ๐ฑ Electronics | Phone cases, grips, buttons | Soft-touch, drop protection |
| ๐ Automotive | Steering wheels, knobs, seals | Comfort, vibration dampening |
| ๐ฅ Medical | Surgical tools, grips, housings | Ergonomics, sealing |
| ๐ง Tools | Tool handles, grips | Comfort, slip resistance |
๐ Get Your Free Quote Today!
Submit your overmolding requirements within 24-48 hours.
๐ง Email: [email protected]
๐ฑ WhatsApp: +8613037600603