Overview:
The OEM Silicone Rubber Keypads with Overmolded Plastic Keycaps for POS Systems deliver a blend of soft-touch tactile response and rugged keycap durability, engineered for high-traffic point-of-sale terminals. The silicone keypad substrate is manufactured via precision compression molding, then transferred to multi-shot injection molds where ABS (or PC) keycaps are overmolded directly onto the silicone, creating a seamless, bonded assembly that resists delamination, wear, and chemical exposure. As a seasoned OEM supplier, we offer end-to-end customization—key layouts, silicone durometer, plastic keycap colors, and integrated legends—ensuring each keypad meets your exact POS hardware requirements and industry standards.
Product Specifications:
| Attribute | Details |
|---|---|
| Place of Origin | Xiamen, China |
| Brand Name | OEM |
| Application | Point-of-Sale Terminals, Kiosk Interfaces, Access Control Panels |
| Item Name | Silicone Rubber Keypad with Overmolded Plastic Keycaps |
| Substrate Material | 50–70A Shore Food-Grade Silicone Rubber |
| Keycap Material | ABS or Polycarbonate (PC) Injection Molded |
| Keycap Finish | Matte or Glossy, Textured Grip Options |
| Legend Printing | Pad Printing or Laser Etching on Plastic Keycap Faces |
| Color Options | Silicone: Any Pantone-Matched; Keycaps: RAL/Pantone |
| Logo Integration | Debossed or Embossed into Silicone Substrate |
| Sample | Available upon request (3–5 days lead time) |
| Certifications | ISO 9001, IATF 16949, RoHS, REACH |
| Technology | Silicone Compression Molding + Multi-Shot Plastic Overmolding |
| MOQ | Flexible (Small Batch Prototyping to Large Volume Production) |
| Lead Time | 20–30 Days (Based on Tooling and Order Volume) |
| Temperature Resistance | –40 °C to +200 °C (Silicone); –40 °C to +120 °C (ABS/PC) |
| Chemical Resistance | Resists Common Cleaning Solvents and Hand Sanitizers |
Surface & Finishing Options:
- Textured Keycap Surfaces: Micro-texturing via mold inserts for enhanced finger grip.
- Selective Overmold Masking: Allows backlighting through transparent or translucent plastic windows.
- UV-Stable Pigmentation: Prevents color fading under prolonged UV exposure in retail environments.
Production Process:
- Tooling Design & Validation:
- CAD finalization and flow simulation for both silicone and plastic molds; CNC and EDM fabrication to ±0.01 mm.
- Silicone Substrate Molding:
- Compression molding of silicone under 180 °C and 10–15 MPa to form the keypad base.
- Substrate Demolding & Transfer:
- Automated pick-and-place to transfer substrate into multi-shot injection mold.
- Plastic Overmolding:
- Injection of ABS/PC at 230–260 °C onto activated silicone surface, creating inseparable keycaps.
- Cooling & Ejection:
- Controlled cooling cycle to prevent stress and ensure flatness, followed by ejection.
- Legend Application:
- Pad printing or laser etching on plastic keycap faces for durable, high-contrast legends.
- Final QA & Packaging:
- Dimensional checks (CMM), durometer tests, bonding strength evaluation, functional key-actuation cycles, then ESD-safe packaging.
Quality Assurance:
Backed by ISO 9001 and IATF 16949 certifications, our QA protocol includes:
- Raw-Material Verification: FTIR for silicone purity; MFI testing for plastic resin consistency.
- In-Process Monitoring: 3D optical projectors for dimensional accuracy; Shore A durometers and Rockwell testers for material hardness.
- Bond Strength Testing: Peel and shear tests to confirm overmold adhesion.
- Functional Endurance: Automated key-press cycling (100,000+ actuations) to validate tactile longevity.
- Chemical & Environmental Resistance: Solvent immersion and temperature-humidity chamber tests.
- 100% Final Inspection: Visual and electrical continuity checks before shipment.
Our Factory:
Our ISO-certified manufacturing complex houses advanced 5-axis CNC machining, mirror and wire EDM for mold fabrication, and multi-shot molding presses for integrated silicone/plastic overmolding. We operate 15 rubber compression presses and 8 multi-shot injection machines, supported by automation such as AutoDryers and precision die-cutters. Our QC team employs CMMs, optical comparators, durometers, and elasticity gauges to enforce stringent standards at every stage, delivering high-performance custom keypads tailored for the most demanding POS environments.
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