Ultra-Clear Processable FEP Film For Industrial & Optical Applications

Ultra-clear processable FEP film: -240℃ to 205℃ thermal range, 250kV/mm dielectric strength, 90%+ UV transmittance. Heat-sealable, weldable & non-stick-ideal for electronics, optics, and chemical processing.

Ultra-Clear Processable FEP Film is a high-performance non-stretch fluoropolymer film manufactured via melt extrusion of fluorinated ethylene propylene (FEP) resin-a copolymer of tetrafluoroethylene (85%) and hexafluoropropylene (15%). As a premium member of the fluoropolymer family (alongside PTFE, PVDF, and ETFE), it combines the chemical inertness of traditional fluoroplastics with exceptional processability (heat sealing, thermoforming, metallization) and ultra-high clarity. Designed for industrial, optical, and electronic applications, this film balances mechanical toughness, thermal stability, and electrical performance, making it a versatile solution for environments requiring durability, precision, and material reliability.

Features (F)
1.Material & Manufacturing PrecisionFEP film is produced from high-purity FEP resin via a tightly controlled melt extrusion process: specialized equipment melts the resin, then extrudes it into a thin film with uniform thickness (tolerance ±2% across rolls), clarity, and mechanical properties. The film is cooled rapidly to preserve its structural integrity, then wound into rolls (on paper cores) or cut into sheets-packed in carbon boxes with end protectors to prevent damage during transport.

2.Core Performance MetricsValidated by third-party lab tests, the film's key properties align with industrial standards:

3.● Chemical Resistance: Chemically inert to 99% of industrial chemicals (only reactive with molten alkali metals/gaseous fluorine at extreme conditions); low permeability to liquids/gases.
● Thermal Range: Long-term service temperature: -240℃ to 205℃ (maintains toughness at cryogenic temperatures).
● Electrical Performance: 250 kV/mm dielectric strength (0.025mm film); low dielectric constant; no electrical tracking/charring.
● Optical & Mechanical Traits: 90%+ transmittance for UV/visible light (blocks far-infrared); high impact/tear resistance; non-stick surface (friction coefficient ≤0.04).

4.Processability AdvantagesUnlike rigid PVDF sheets or less-formable PTFE films, this FEP film supports diverse secondary processes: heat sealing, thermoforming, vacuum forming, welding, metallization, and lamination. This flexibility eliminates the need for custom fabrication tools, expanding its usability across industries.

Advantages (A)
1.Versatility Over Competing Fluoropolymers
● Compared to ETFE film: Offers higher dielectric strength (250 vs. ~160 kV/mm) for electronic applications.
● Against PVDF film: Delivers wider thermal range (-240℃ vs. ~-40℃) and better optical transmittance.
● vs. PTFE film: Far easier to process (heat-sealable/weldable) and more cost-effective for large-scale production.

2.Cost-Effective DurabilityIts 10+ year service life (outdoor/industrial environments) reduces replacement frequency-lowering long-term maintenance costs. The uniform extrusion process also minimizes material waste (≤1% scrap rate), optimizing project budgets.

3.Safety & ReliabilityNon-toxic (compliant with industrial safety standards) and non-charring under electrical stress, it mitigates risks of chemical leakage (in processing equipment) or electrical failure (in electronics).

Benefits (B)
1.Electronics Industry: Enhanced Insulation & FlexibilityFor flexible flat cables or aircraft electronic components, the film's 250 kV/mm dielectric strength ensures reliable insulation. Its formability allows custom shaping for compact circuit designs, reducing assembly time by 20% vs. rigid alternatives.

2.Optical & Solar Applications: High Light EfficiencyAs a protective layer for solar collectors or optical displays, its 90% UV/visible transmittance maximizes energy capture/display clarity. Outdoor weather resistance (no yellowing after 5+ years) eliminates the need for frequent film replacement.

3.Chemical Processing: Leak-Proof ProtectionFor tank/pipe linings, the film's chemical inertness prevents corrosion and fluid contamination. Its heat-sealable joints reduce leakage points by 60% compared to glued/bolted connections.

Evidence (E)
● Electronics Case Study: A aerospace supplier used 0.025mm FEP film for aircraft circuit insulation. Testing confirmed no electrical failure after 1,000 hours of 150℃ operation-meeting FAA safety standards.
● Solar Project: A 10MW solar farm adopted the film as collector covers; 2-year data showed 8% higher energy capture vs. standard PET films (due to better UV transmittance).
● Lab Validation: Third-party tests (ASTM D149) confirmed the film's dielectric strength (250 kV/mm) exceeds industry requirements for high-voltage components.

CTA (Call to Action)
Ready to integrate ultra-clear, processable FEP film into your project?
1.Request a free sample (custom thickness: 0.025mm–0.5mm) for lab testing.
2.Get a custom quote tailored to your roll/sheet size and order volume (no MOQ for small trials).
3.Consult our engineering team for application-specific process guidance (e.g., thermoforming parameters).

As a China-based manufacturer of fluoropolymer products (including FEP tubing and PVDF sheet), we guarantee on-time delivery and factory-direct pricing. Inquire now to lock in your order!

25kg/woven bag, 800kg/pallet

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