SERVICES
PEEK Injection Molding
We mold PEEK at 360–400 °C — a melt window so narrow that a 2 °C drift can embrittle an entire batch. That is why we run it on automated presses with ±1.5 °C closed-loop control, molding unfilled, 30 % glass-fiber-reinforced and medical-grade PEEK for functional, structural and aesthetic parts — from low-volume bridge runs to high-volume production.
THE REAL DECISION
Small-Batch Sourcing, Done Right vs. Done Wrong
Low-volume buyers usually hit one of two paths. The wrong one costs months and doubles the budget; the right one gets real production parts in your hand in weeks. Here is what separates them.
The wrong path: thermal degradation in the barrel
PEEK must stay molten at 360–400 °C, but long residence times or unstable barrel heating degrade the polymer — the melt yellows, crystallinity drifts, and parts come out embrittled with lost chemical resistance. The damage often only surfaces at testing — or in service.
The wrong path: standard machines pressed into PEEK service
A conventional press cannot reach — or hold — the 360–400 °C barrel and 150–200 °C mold window PEEK demands. Cold molds breed cold slugs and amorphous, weak parts; undersized heaters turn every cycle into a lottery on the most expensive resin in the shop.
WHAT WE OFFER
The Route That Fits Your Order
Cost & Process Realities of PEEK
What makes PEEK expensive — and how we keep the cost under control.
Material cost is high
PEEK resin costs multiples of engineering plastics — part design, gating and scrap control decide the bill.
- Net-shape molding
- Minimal runner waste
- Regrind strategy with supplier approval
Tooling must run hot
Molds run at 150–200 °C with hot runners and hardened steel; cold slugs destroy quality.
- Hot runner systems
- High-temperature mold steel
- Modular PEEK-dedicated designs
Processing demands precision
A 2 °C deviation can crystallize and embrittle an entire batch — machines must hold ±1.5 °C.
- Automated presses
- Closed-loop temperature
- First-shot success 92 %+
Alternatives when budget bites
PEKK needs only 10–15 °C more than PEEK; PEI (Ultem) covers continuous use to 170 °C at medium cost.
- PEKK upgrade path
- PEI for sub-170 °C service
- PPS for heat and chemical balance
Surface & tolerance control
PEEK parts hold tight tolerances with 0.1–0.5 % shrinkage; we verify with first-article measurement.
- 0.1–0.5 % shrinkage
- First-article verification
- GD&T reporting
PEEK vs PEI: Which High-Temperature Resin Fits?
Where PEEK Injection Molding Pays
Aerospace
Satellite components, oil seals and high-load bushings that must keep properties above 200 °C.
Medical
Surgical instruments, minimally invasive tools with walls under 0.1 mm, and FDA-certified implantable components.
Semiconductor
Wafer carriers, chamber components and high-temperature process hardware.
Oil & gas
Deep-well exploration seals rated to 150 MPa pressure.
Robotics & industrial
Joint and wear components where creep resistance and self-lubrication beat metal.
Automotive & motorsport
High-temperature seals, thrust washers and sensor components under the hood.
Downhole & subsea
Insulators, connectors and seals that face high pressure and aggressive fluids.
PEEK: The Ultra-High-Performance Thermoplastic
MOLDITQUICK runs PEEK on automated presses with closed-loop temperature control; property values follow industry PEEK reference data.
Continuous service at 260 °C with short-term tolerance to 300 °C — the highest of melt-processable thermoplastics.
Tensile strength 90–100 MPa and about 4× the wear resistance of PTFE.
Low shrinkage (0.1–0.5 %) with a thermal expansion coefficient close to aluminum — dimensionally stable across temperature.
Biocompatible — FDA-certified grades used in long-term implants without rejection.
Cryogenic resistance — retains strength down to −60 °C.
Chemical resistance — survives strong acids (except concentrated H₂SO₄) and organic solvents.
Radiation resistance — PEEK tolerates gamma sterilization and nuclear environments, useful in medical and aerospace.
Low outgassing — suitable for semiconductor vacuum and cleanroom applications.
PEEK Grades We Mold — From Unfilled to 30 % GF
Grade families selected at DFM against your thermal, mechanical and regulatory requirements — all molded on-site on dedicated high-temperature machines.
PEEK Processing Parameters We Control
Melt stability is the difference between a good and a scrap PEEK part. The windows below follow industry PEEK processing data and are verified on-site on our presses.
| Parameter | Recommended Range | Why It Matters |
|---|---|---|
| Barrel temperature | 340–400 °C (: 360–400 °C) | Melt must stay hot and stable; deviations of even ~2 °C can cause crystallization and embrittlement. |
| Mold temperature | 150–200 °C (typical 160–180 °C) | Hot molds prevent cold slugs and promote crystallinity for maximum strength. |
| Mold shrinkage | 0.1–0.5 % | Very low and predictable — close to metal-like dimensional stability. |
| Melt stability | ±1.5 °C closed-loop control | Closed-loop control delivers first-shot success above 92 % on thin-wall PEEK with automated machines. |
| Drying | 150 °C, ~3 h | PEEK absorbs little moisture, but surface moisture must be driven off before molding. |
FAQ
PEEK Injection Molding — FAQ
Can you help with product development?
Yes. From design review and material selection to prototyping, tooling and mass production — our engineers support you through the entire product lifecycle.
Do you ship internationally?
Yes. We ship worldwide via air and sea freight, with export packing, documentation and delivery tracking handled by our team.
What quality inspections do you perform?
First article inspection, dimensional measurement, material verification and surface checks — with inspection reports provided per batch. Full details are agreed before production.
What is the difference between rapid and production tooling?
Rapid tooling uses softer materials and simplified construction for fast, low-cost validation runs (hundreds to low thousands of parts). Production tooling uses hardened steel for high-volume, long-life programs.
How long does injection mold making take?
Rapid tooling prototypes can be ready in days; production tooling typically takes several weeks depending on complexity, cavity count and steel grade. We confirm a detailed schedule with your quotation.
Do you provide DFM feedback?
Yes. Every quotation includes a design-for-manufacturing review: draft angles, wall thickness, gate and weld-line locations, tolerance recommendations and cost-saving suggestions — before any tooling is cut.
What file formats do you accept?
We accept STEP, IGES, STL, X_T and 2D drawings (PDF or DWG). A 3D model lets us quote most accurately; 2D drawings are used to confirm critical tolerances and specifications.
How do I get a quote?
Upload your 3D file (STEP, IGES, STL or X_T) through the quote page, or email it directly. Our engineers review the design, run a DFM check and send you a detailed quotation — usually within one business day.
Ready to Start Your PEEK Injection Molding?
Factory-direct pricing, ISO-certified quality and rapid lead times. Send your spec and volume, get a quote within 24 hours — DFM review included.