Advanced PEEK Film Manufacturing
Dalian Allstar Material utilizes an advanced casting process to manufacture high-performance semi-crystalline and amorphous PEEK (Polyetheretherketone) thermoplastic films, offering excellent chemical resistance and uncompromising mechanical strength.
≤260°C
Continuous Service Temp
≥190 kV/mm
Dielectric Strength
0.025 – 1.0mm
Thickness Range
1200mm
Maximum Width
Technical Comparison: Amorphous vs. Semi-crystalline
| Property | Amorphous PEEK Film | Semi-crystalline PEEK Film |
|---|---|---|
| Crystallinity | Typically <5% | Typically 25% – 35% |
| Appearance | Transparent / Amber | Beige / Light Brown / Opaque |
| Glass Transition (Tg) | ~143°C | ~143°C |
| Continuous Use Temp | ≤140°C (Modulus drops above Tg) | 250 – 260°C (Retains modulus above Tg) |
Summary of Physical Mechanisms Behind Performance Differences
The difference in mechanical properties between crystalline and amorphous states essentially originates from the differences in molecular chain packing:
Crystalline Region (Lamellae / Spherulites)
Molecular chains are tightly folded and ordered, shortening the interchain distance and increasing the density of secondary bonds (van der Waals + π-π stacking). This creates a “physical cross-linking” effect, which comprehensively improves strength, modulus, heat resistance, creep resistance, and fatigue resistance.
Amorphous Region (Disordered Entanglement)
A larger free volume of molecular chains and high segmental mobility result in better ductility, toughness, impact resistance, and transparency. However, once the temperature approaches Tg (143°C), the chain segments unfreeze, leading to a precipitous drop in performance.
Semi-crystalline Structure
Crystalline region (reinforcing phase) + Amorphous region (connecting phase): This can be understood as a “molecular-level self-reinforcing composite material.”
Targeted Application Scenarios
Optimize your manufacturing process by selecting the right PEEK film morphology for your specific industry requirements.
Copper Clad Laminate Substrates
High ductility, easy thermoforming, excellent transparency. Ideal for secondary hot pressing lamination.
Transparent Medical Device Packaging
Elongation at break >120%, capable of deep drawing for complex packaging components.
Motor Slot Insulation (Class H/N/R)
Long-term continuous use at 250°C, maintaining a highly stable high-temperature modulus.
Lithium Battery Separators & Capacitors
Superior high temperature resistance, excellent creep resistance, and strict dimensional stability.
Aerospace Cable Wrapping
Outstanding wear resistance, fatigue resistance, and robust chemical resistance for harsh environments.
Flexible Circuit Board (FCC) Dielectric
Perfectly balances initial manufacturing processability with ultimate final heat resistance.
Premium PEEK Film Variations
Dalian Allstar Material manufactures high-performance PEEK films in tailored color and thickness configurations to meet your exact industrial applications.
Natural (Unfilled) PEEK Film
Retains the pure beige/amber transparency of the raw resin. Ideal for applications requiring high purity and visual inspection.
Black PEEK Film
Enhanced with specific additives for UV resistance and aesthetic integration. Perfect for outdoor or light-sensitive technical components.
What color and thickness do you need for your next project?
Contact Richard and our Dalian engineering team to discuss your specific technical requirements, custom cutting, and global shipping options.
Contact Our EngineersPEEK Film vs. Alternatives
| Property | Dalian AllStar PEEK Film | Kapton (PI) | PTFE Film |
|---|---|---|---|
| Continuous Use Temp | 260°C | 260°C | 260°C |
| Tensile Strength | 100 MPa | 165 MPa | 25 MPa |
| Chemical Resistance | Excellent | Good | Outstanding |
| Thermoformable | ✔ | ✖ | ✖ |
| Biocompatibility | ✔ FDA | ⚠ | ✔ |
Technical FAQ
1. What is PEEK film used for?
PEEK film is widely used in demanding applications including aerospace insulation, electronics (flexible printed circuits), medical device packaging, and automotive components due to its exceptional thermal and chemical resistance.
2. What is the maximum operating temperature of PEEK film?
PEEK film generally offers a continuous operating temperature of up to 260°C (500°F), making it ideal for extreme high-temperature environments.
3. Is PEEK film FDA approved for medical use?
Yes, specific grades of our unfilled natural PEEK film comply with FDA regulations for food contact and certain medical applications. Please verify exact grade requirements with our team.
4. What thickness of PEEK film do you offer?
We provide a comprehensive thickness range, typically starting from ultra-thin 0.025mm up to 3.0mm, depending on whether you require amorphous or semi-crystalline forms.
5. What is the difference between amorphous and crystalline PEEK film?
Amorphous PEEK film is transparent, highly thermoformable, and ideal for deep drawing. Semi-crystalline PEEK film is opaque/beige and offers superior wear resistance, chemical resistance, and high-temperature dimensional stability.
6. What is the MOQ for PEEK film orders?
Our Minimum Order Quantity (MOQ) varies depending on the specific thickness and customization requirements. Please contact our sales team for a precise quote.
7. How does PEEK film compare to Kapton polyimide film?
While both are high-temperature plastics, PEEK film offers superior moisture resistance, better chemical resistance to certain solvents, and is thermoformable, unlike standard Kapton (PI) film.
8. Can PEEK film be thermoformed or laser-cut?
Yes, amorphous PEEK film is excellent for thermoforming. Both amorphous and semi-crystalline forms can be precision laser-cut or die-cut to meet specific dimensional tolerances.
9. What is the lead time and shipping method?
Standard lead times range from 1 to 3 weeks depending on inventory and custom slitting requirements. We offer global shipping via express couriers (DHL/FedEx) or air/sea freight.
10. Do you provide free samples of PEEK film?
We can provide A4-sized samples for standard thicknesses so you can evaluate the material’s properties for your specific application. Shipping costs may apply.
Ready to Upgrade Your Manufacturing Process?
Discuss your specific thickness, color, and morphology requirements directly with Richard and our Dalian engineering team. We provide rapid technical support, custom slitting, and competitive B2B pricing for global clients.
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