Custom LCP Injection Mold Tooling China
Specialized micro-precision injection mold manufacturing for Liquid Crystal Polymer (LCP) components. Delivering 0.15mm thin-wall capabilities, zero-flash parting lines, and tight-tolerance micro gating for high-density electronic connectors and automotive terminals.
Micro Gating & Flash Control for Ultra-Low Viscosity LCP
LCP exhibits shear-thinning behavior and ultra-low viscosity at melt temperatures, easily causing flash at parting line gaps as small as 0.005mm. Our toolroom engineering strictly controls shut-offs and venting:
| Flash Control Challenge | Standard Molding Approach | Axiom Molds Precision Solution |
|---|---|---|
| Parting Line Seal-Offs | Standard CNC milling and bench fitting, leaving 0.01mm gaps | Sodick linear motor mirror EDM achieving sub-micron fit (see precision machining methods for ±0.002mm accuracy) |
| Core Pin Deflection | Standard H13 pins that bend under high injection pressure | PG-ground tungsten carbide core pins with extreme rigidity and wear resistance |
| Trapped Gas & Short Shots | Standard peripheral parting line vents prone to clogging | Active vacuum cavity evacuation and porous steel inserts for micro-venting |
| Micro Gate Freezing | Cold runner sub-gates that restrict LCP flow and orientation | Optimized micro pin-point gating with thermal control to sustain high flow |
0.15mm Thin Wall Capability & Injection Specifications
Micro-pitch connectors demand extreme thin-wall flow. We leverage LCP's highly anisotropic fiber orientation and specialized mold metallurgy to ensure complete cavity filling without warpage.
0.15mm Minimum Wall Thickness
Engineered flow channels and gating to prevent premature freezing in micro-ribs and connector pitch dividers.
Thermal Management Parameters
Designed for LCP melt temperatures of 280-350°C and active mold temperature control between 120-180°C via oil heating.
High-Speed Injection Profile
Mold structures heavily reinforced to withstand injection speeds of 600-800mm/s required for rapid thin-wall filling.
62-64 HRC Tooling Steel
High-hardness powder metallurgy steels (Elmax, M390, CD650) combat abrasive wear from 30-40% glass fiber LCP blends — review our injection mold steel selection guide.
LCP Micro Molding Case Studies
Real-world engineering applications of our precision LCP tooling capabilities, delivering extreme tolerances and rapid turnarounds for the electronics industry:
0.35mm Pitch Server B2B Connector
Ultra-fine 0.35mm pitch with 0.2mm wall sections. Utilized mirror EDM seal-offs and custom tungsten carbide punches for the mating terminal progressive die.
0.4mm Pitch FPC ZIF Connector
High-flow LCP molding requiring perfect cavity balance to prevent warpage across long multi-pin spans and maintain precise actuator fit.
RF Coaxial Housing (FAKRA)
LCP dielectric housing requiring strict dimensional stability for 50Ω impedance control. Delivered with PPAP documentation and CMM FAI.
800V EV High-Voltage Terminal
Vertical rotary insert molding of heavy copper busbars with high-temp LCP overmolding. Multi-point positioning eliminates high-voltage micro-voids.
High-Precision LCP Tooling: Prototyping to Export Roadmap
LCP micro-pitch connector tooling demands rigorous verification from initial DFM through FAT testing — review our detailed guide on how to design micro connector molds for sub-0.4mm pitch applications:
DFM & Moldflow Analysis (24h)
Rapid evaluation of wall thicknesses, gate locations, and LCP flow dynamics (how DFM analysis cuts mold modification costs) to identify potential short shots, weld lines, or warpage risks.
3D Tooling Design
Full 3D mold layout incorporating HASCO/DME standards, optimized conformal cooling, and sub-micron venting structures tailored for LCP.
Precision Machining (CNC/EDM/PG)
In-house manufacturing using Makino CNC, Sodick wire cut, and mirror EDM to achieve ±0.002mm tolerances on core pins and cavities.
T1 Trial & 100% CMM FAI
Initial sampling typically within 15-25 days. Samples undergo rigorous inspection using Zeiss CMM and optical microscopy for a complete First Article Inspection report.
Export Delivery & Spare Parts
Final FAT approval, rust-proof vacuum packing, and delivery of the mold alongside a customized package of consumable tungsten carbide and steel spare parts.
Related Engineering Guides & Technical Resources
How to Control Flash in LCP Thin-Wall Connector Molding
0.003-0.005mm flash gap thresholds, kiss-off preload blocks, and Bohler M390/S136 ESR cavity steel.
Submarine vs Edge vs Pin Gate: How to Choose for LCP Connector Molds
Gate shear rates up to 45,000 s^-1, anisotropic shrinkage alignment, and automated sub-gate degating.
PPS vs PEEK vs LCP: Which High-Performance Plastic for Your Connector
SMT 260°C reflow endurance, thin-wall flow limits, high-frequency dielectric constant (Dk/Df), and material cost.
Frequently Asked Questions
How thin can you mold LCP connector parts (minimum wall thickness)?+
How do you control flash in LCP high-flow injection molding?+
Do you have experience with LCP micro-pitch connector molds?+
Ready for Precision LCP Molding?
Upload your connector 3D CAD files for a free DFM review, flow analysis, and export tooling quote within 24 hours.