Overview:
Our Medical Grade Polishing Overmolding Molding Tooling Mold with Multi-Cavity Solutions is specifically designed for high-precision manufacturing of medical components that demand superior surface finish, biocompatibility, and dimensional stability. Built to meet the rigorous standards of medical-grade production, these molds are engineered for overmolding applications involving multi-material integration—such as LSR (Liquid Silicone Rubber) over thermoplastics—to produce components like syringe parts, valve seals, connectors, and wearable medical devices.
Constructed from premium-grade stainless tool steels including S136, H13, and NAK80, each mold offers outstanding polishability, corrosion resistance, and durability under high-temperature sterilization conditions. Utilizing advanced CNC machining, mirror EDM, precision grinding, and slow-speed wire cutting, we achieve optical-grade surface finishes (Ra ≤ 0.05 μm), ensuring flawless part aesthetics and sealing performance.
Optimized multi-cavity and hot runner system designs guarantee uniform filling, tight dimensional tolerances, and high-volume production efficiency. Combined with DFM (Design for Manufacturability) and mold-flow analysis, our molds support stable overmolding performance, reduced cycle times, and zero flash production—ideal for demanding medical device applications.
Basic Information:
| Specification | Details |
|---|---|
| Material Options | S136, H13, NAK80, 420SS, 718H |
| Process | CNC Machining, Mirror EDM, Precision Grinding, Wire Cutting, Polishing |
| Surface Finish | Optical-Grade Mirror Polish (Ra ≤ 0.05 μm) |
| Mold Type | Multi-Cavity, Overmolding (LSR + Plastic), Hot Runner |
| Lead Time | Prototype: 10–20 Days / Production: 4–6 Weeks |
| Tolerance | ±0.005 mm |
| Molding Materials | LSR, PC, PEEK, PP, ABS (Medical-Grade) |
| Cavity Number | Customizable (2–16 Cavities) |
| Certification | ISO 9001, ISO 13485, FDA, CE, RoHS |
| Applications | Medical Valves, Syringe Components, Fluid Seals, Diagnostic Devices |
Key Advantages:
- Medical-Grade Compliance: Designed and manufactured in accordance with ISO 13485 and FDA quality standards.
- High-Precision Overmolding: Achieves seamless bonding between LSR and thermoplastics for leak-proof performance.
- Ultra-Smooth Surface Finish: Mirror-polished cavity surfaces eliminate micro-defects and ensure biocompatibility.
- Multi-Cavity Efficiency: Optimized layout for high-volume, consistent part replication with minimal variation.
- Durability & Stability: Premium tool steels with anti-corrosion coatings withstand repeated sterilization cycles.
- Complete OEM/ODM Capability: DFM, prototyping, mold validation, and full production support available.
Surface Treatment Options:
- Mirror Polishing (SPI A1/A2): Ensures optical-grade transparency and smoothness for medical contact parts.
- Nitriding & Hard Chrome Plating: Extends mold life and improves corrosion resistance against medical-grade silicones.
- Texturing (VDI, MT): Available for non-contact areas to enhance grip or component functionality.
- Electroless Nickel Plating: Provides superior wear resistance and dimensional stability in high-humidity environments.
Quality Assurance:
Every mold undergoes comprehensive dimensional and surface validation using ZEISS CMMs, 3D optical profilers, and laser surface analyzers to ensure perfect cavity alignment and polish quality. We perform mold-flow simulation, gate balance analysis, and functional sampling tests to confirm consistent overmolding performance and bonding integrity.
Our strict adherence to ISO 9001 and ISO 13485 standards guarantees full traceability from material sourcing to final mold acceptance. Each tool is inspected for optical clarity, parting line precision, and sealing surface uniformity, ensuring it meets the stringent hygiene and performance requirements of the medical industry.
Our Factory:
Our state-of-the-art manufacturing facility integrates over 20 CNC machining centers, 8 EDM and mirror EDM units, and automated polishing systems dedicated to medical-grade tooling. Equipped with cleanroom mold assembly zones and temperature-controlled polishing rooms, we maintain dust-free, contamination-controlled conditions to preserve surface integrity.
Through fully digitalized CAD/CAM/CAE integration, real-time process monitoring, and advanced mold validation systems, we deliver molds with consistent optical precision and repeatable overmolding quality.
By combining technical expertise, precision machining, and certified medical-grade processes, we help our clients achieve reliable, high-performance molding solutions for complex, multi-material medical components—setting the benchmark for excellence in medical manufacturing.