PPS Injection Mold

Coolant Temp Sensor Housings

Designed to withstand continuous exposure to 120°C ethylene glycol. High-precision core pins create flawless O-ring sealing surfaces without flash.

Fuel Rail Connectors

Taking advantage of PPS's unmatched resistance to hydrocarbons. Molds feature deep-draft ejection to preserve dimensional accuracy of internal clip geometries.

LED Reflector Cups

Molded with 40% glass-filled PPS to resist the concentrated heat of high-output LEDs. Tooling involves SPI high-finish polishing for optimal light geometry.

Industrial Pump Impellers

Multi-cavity tooling managing complex undercut blade shapes. Engineered for highly crystalline PPS structures to resist abrasive chemical slurries.

Hardened Tool Steel (52+ HRC)

To combat extreme abrasion from 40% GF content, we machine cavities using H13 or premium M390 powder metallurgy steel (see our injection mold steel selection guide), heat-treated to 52-56 HRC for extending tool life beyond 500,000 shots.

High-Temperature Oil Heating

Maximum PPS crystallinity and strength require mold temperatures of 130°C–150°C. We design specialized high-flow hot oil circuits with high-temp O-rings and insulated platens.

Aggressive Gas Venting

PPS generates significant outgassing during high-temp injection. We engineer deep primary vents (0.015mm-0.02mm) with large secondary dump channels to prevent diesel burning and short shots.

Rapid Injection for Thin Walls

PPS flashes easily due to low melt viscosity but requires fast injection speeds to fill thin sensor walls before freezing. We optimize gate sizes and utilize Makino V33i (±0.002mm precision machining methods) for tight parting line shutoffs.

We simulate fiber orientation to map high-stress zones and modify wall thicknesses for uniform shrinkage (how DFM analysis cuts mold modification costs), preventing warpage in long or flat components.

PPS's low viscosity demands specialized gate designs. We specify anti-stringing valve gates or thermal tip hot runners engineered for 340°C melt stability.

Hard milling of 52+ HRC steel using Makino V33i centers and Sodick AG40L EDM machines, ensuring absolute parting line integrity to eliminate PPS micro-flash.

Strict pre-drying protocols are enforced (120°C for 3+ hours in desiccant dryers) to achieve <0.02% moisture, preventing hydrolytic degradation during molding.

Initial samples are run with 140°C oil controllers. We employ Zeiss ACCURA CMMs to verify all critical sensor dimensions before providing First Article Inspection (FAI) reports and moving to production (T1 vs T2 trial expectations).