Product Overview
This precision injection molding service specializes in transparent PC medical components such as sight glasses, fluid chambers, pump housings, cuvettes and protective covers. Tools are built on KLM standard bases with S136 ESR or NAK80 cavities polished to optical clarity, achieving ±0.02 mm tolerances and bubble-free transparency for critical medical functions.
Molding runs in a dust-controlled workshop with process parameter monitoring, so every part delivers consistent clarity and dimensional accuracy.
Key Features
- ±0.02 mm precision: tight tolerances suit mating assemblies and press-fit medical joints.
- Optical-grade polishing: SPI A1 mirror cavities produce transparent parts without visible flow marks.
- KLM standard mold base: proven, interchangeable base system shortens build and maintenance time.
- Bubble-free molding: optimized venting and screw profile eliminate trapped air in optical sections.
- Medical grade PC: autoclavable and gamma-stable grades available for device sterilization.
- Clean workshop: dust-controlled molding area protects optical surfaces from contamination.
Technical Specifications
| Parameter | Specification |
|---|
| Product Material | Transparent PC, PMMA |
| Mold Steel | S136 ESR or NAK80 |
| Mold Base | KLM standard series |
| Dimensional Tolerance | ±0.02 mm |
| Cavity Number | 1-4 cavities |
| Surface Finish | Optical clear SPI A1 |
| Sterilization Support | Autoclave, EO and gamma compatible grades |
| Mold Life | 500,000+ shots |
Applications
Transparent PC components from this service equip infusion pumps, dialysis machines, respiratory devices, diagnostic analyzers, laboratory instruments and surgical lighting. Optical clarity enables fluid level viewing, sensor light transmission and inspection windows, while PC toughness protects delicate internal mechanisms.
Company Strength
Xiamen KDT Technology Co., Ltd. has delivered precision molds and molded components since 2007. Our integrated plant includes high-speed CNC, wire EDM, optical polishing and injection machines from 90 to 650 tons, with 40 to 50 experienced staff. We export 80% to 90% of production to medical and laboratory equipment makers in Europe, North America and Japan.
Product Solutions
Each precision program starts with DFM analysis focused on gate placement, weld line avoidance and optical surface protection. Mold flow simulation verifies filling balance and predicts sink marks in thick sections. We manufacture with documented steel certification, validate through OTS and golden samples, and provide full dimensional and cosmetic reports for device qualification files.
Minimum Order Quantity & Production Cycle
| Item | Standard Lead Time |
|---|
| DFM analysis and design | 3-5 days |
| Mold manufacturing | 30-35 days |
| Sample delivery | 7 days after mold completion |
| Mass production | 3 weeks |
| Minimum order quantity | 500 pieces for parts, 1 set for mold |
Industry Cases
A Japanese laboratory instrument maker uses our 2-cavity NAK80 mold for a transparent fluid chamber, holding ±0.02 mm on sealing bores across 200,000 parts per year with zero leakage complaints. A European infusion pump company adopted our optical PC sight glass, eliminating cloudiness issues and passing all clarity inspections on the first production audit.
Frequently Asked Questions
| Question | Answer |
|---|
| Can you achieve optical clarity in PC? | Yes, with SPI A1 polished cavities, optimized gating and controlled melt temperature. |
| What tolerances can you hold? | ±0.02 mm on critical dimensions with CMM verification. |
| Do you support sterile packaging? | Yes, we can supply parts suitable for EO or gamma sterilization with validated materials. |
| Can you mold parts with undercuts? | Yes, using side actions and lifters while preserving optical surfaces. |
| What documentation do you provide? | Material certs, dimensional reports, process records and DFM documentation. |
| How do you prevent bubbles in thick sections? | Mold flow analysis, venting design and screw profile optimization eliminate trapped air. |
Packaging & Quality Assurance
Optical components are individually wrapped in anti-static film, packed in foam-insert cartons and shipped with humidity indicators. Every lot is inspected under controlled lighting against the approved optical standard, with AQL 2.5 final inspection. Contact our precision engineering team with your drawings for a DFM review and quotation.
