Product Overview
This is a high-precision 1*4 cavity injection mold, purpose-built for manufacturing medical-grade PA12 connectors and fluid path components. Constructed with premium 1.2083ESR mold steel heat-treated to HRC 48-52, this tooling meets the strictest requirements for cleanliness, durability, and precision in medical device production. Featuring a direct side gate system and a hybrid surface finish of SPI-A3 polished finish and partial VDI-18 texture, the mold delivers flawless, biocompatible surfaces ideal for medical applications. The design incorporates precision slider mechanisms to produce complex undercut geometries, ensuring leak-tight connections and dimensional consistency across all parts. Optimized specifically for PA12’s medical-grade properties, this mold effectively addresses common molding challenges such as material degradation, flash, and dimensional drift, making it an ideal solution for high-volume manufacturing of critical medical connectors.
Core Product Specifications
| Specification Item | Detailed Parameters |
|---|
| Mold Cavity | 1*4 Multi-Cavity, 4 identical parts per cycle for balanced, high-efficiency production |
| Applicable Material | PA12 (Polyamide 12), medical-grade, biocompatible, and suitable for fluid path components |
| Gating System | Direct Side Gate, clean feeding, minimal gate residue, and balanced melt flow across all cavities |
| Mold Steel Grade | 1.2083ESR Mold Steel, ESR-refined for ultra-clean, defect-free medical-grade tooling |
| Steel Hardness | HRC 48-52, vacuum heat-treated for exceptional wear resistance and long-term dimensional stability |
| Surface Finish | Hybrid finish: SPI-A3 high-gloss polish + partial VDI-18 texture, meeting medical device appearance standards |
| Mold Mechanism | Precision slider mechanism for complex undercut geometries in medical connectors |
| Molded Application | Custom medical connectors, fluid path components, and biocompatible plastic parts |
| Production Compatibility | Cleanroom-ready design, compatible with medical-grade injection molding machines |
Advanced Mold Design & Manufacturing
1. 1*4 Multi-Cavity Layout for Medical Production
The 1*4 cavity design ensures balanced melt flow and cooling conditions for all four parts, eliminating the risk of dimensional variation common in multi-cavity molds. This configuration is optimized for cleanroom production, with minimal dead space and easy mold cleaning to meet medical hygiene standards.
2. 1.2083ESR Mold Steel Construction
Built with ESR-refined 1.2083 mold steel and heat-treated to HRC 48-52, this tooling offers exceptional corrosion resistance, wear resistance, and thermal stability. The ESR process removes impurities, ensuring the mold surface is ultra-clean and free of defects that could compromise medical part quality. This steel is ideal for medical applications, as it prevents material degradation and ensures consistent part quality even after millions of cycles.
3. Direct Side Gate System for Medical Components
The direct side gate is strategically placed to feed material into non-critical areas of the connector, ensuring no gate marks appear on sealing or fluid path surfaces. This design minimizes gate residue, reducing post-processing requirements and ensuring the parts meet the highest standards for cleanliness and biocompatibility. The balanced flow path prevents material degradation, preserving PA12’s medical-grade properties.
4. Hybrid SPI-A3 & VDI-18 Surface Finish
The mold features a precision hybrid surface finish:
SPI-A3 High-Gloss Polish: Applied to critical fluid path and sealing surfaces, ensuring smooth, burr-free, and easy-to-clean interiors that prevent contamination.
Partial VDI-18 Texture: Applied to exterior non-critical surfaces, providing a subtle matte finish that hides minor molding marks while maintaining a professional appearance.
5. Precision Slider Mechanism for Complex Geometries
The mold incorporates precision slider mechanisms to produce the complex undercut geometries required for secure, leak-tight medical connectors. These sliders are engineered with tight tolerances to eliminate flash and ensure consistent fit and function across all molded parts. The design also minimizes wear on critical moving components, extending the mold’s service life.
Material Adaptability & Core Advantages
PA12 is a medical-grade polyamide prized for its biocompatibility, chemical resistance, and flexibility, making it ideal for fluid path components and connectors. This custom mold is purpose-built to leverage these properties:
Biocompatibility: The clean mold steel, balanced gating, and polished surfaces ensure the PA12 material remains free of contamination and degradation during molding.
Leak-Tight Performance: The precision slider mechanism and tight dimensional tolerances ensure connectors form secure, leak-proof seals in medical applications.
Consistent Quality: The 1.2083ESR steel construction and heat treatment maintain mold precision, ensuring uniform part quality across millions of shots.
Regulatory Compliance: The cleanroom-ready design, smooth surfaces, and minimal post-processing support compliance with medical device manufacturing standards.
Key Applications
This high-precision injection mold is designed for manufacturing a wide range of PA12 medical connectors and fluid path components, including:
IV and fluid administration set connectors
Medical device luer locks and adapters
Surgical instrument fluid path components
Custom biocompatible plastic parts for healthcare and pharmaceutical applications
Quality Assurance & After-Sales Support
Every medical-grade injection mold undergoes a rigorous multi-stage quality control process, including:
Steel material and ESR purity verification
Hardness testing and heat treatment validation
Dimensional accuracy checks of all critical mold features, including slider mechanisms and sealing surfaces
Surface finish inspection of SPI-A3 polished and VDI-18 textured areas
Mold trial runs to validate part quality, gate performance, and dimensional consistency
We provide comprehensive after-sales support, including mold maintenance guidance, technical troubleshooting, and modification services, to ensure your production runs smoothly and meets all medical device manufacturing requirements.
