Aqueous Liquid PFA • Perfect for Acute Angles • 260 °C Continuous Use

Everflon™ Techyours™
PFA Water-Based Series

Advanced water-based PFA liquid topcoats designed for parts that are difficult to powder coat, such as acute angles and complex geometries. Delivering exceptional clarity, superior chemical resistance, and FDA compliance.

Acute Angle Coating

Ideal for parts with acute angles or intricate designs where traditional electrostatic powder coating cannot easily reach or provide thin uniform films.

260 °C Thermal Stability

Engineered for continuous operating temperatures up to 260 °C (500 °F), maintaining superior non-stick release and chemical inertness.

Flexible Film Build

Provides thin film build options (0.8–1.2 mil / 20–30 µm per coat) with total film builds up to 3 mil (75 µm) through multiple coats.

FDA Food Contact Compliance

Fully compliant with US FDA food contact regulations and EU Regulation (EC) No 1935/2004 when applied with recommended primer systems.

Liquid PFA Grade Portfolio

Everflon™ Techyours™ PFA 420 Series Product Line

High-performance water-based liquid PFA topcoat engineered for superior thin-film builds and complex geometries.

Grade 420-210 (Clear Topcoat) 20–30 µm / Coat

Aqueous Liquid PFA Clear Topcoat

Water-based PFA topcoat offering crystal clear appearance, viscosity of 250–750 cps, and optimized coverage of 6.91 m²/kg at 25 µm DFT. Designed for parts requiring thinner coatings than powder coats.

Key Targets: General industrial equipment, food processing machinery, office automation.

Grade 420-220 (Enhanced Build) Up to 75 µm Total

Multi-Coat High-Build Liquid PFA

Optimized for multi-coat applications allowing total film builds up to 3 mil (75 µm). Provides enhanced chemical barrier performance and exceptional release properties on complex metal substrates.

Key Targets: Chemical valves, agitators, semiconductor wet benches, high-corrosion environments.

Optimized Liquid PFA Coverage Efficiency

Theoretical coverage reaches 6.91 m²/kg (365 ft²/gal) at 25 µm (1.0 mil) dry film thickness for Grade 420-210, ensuring precise film control on intricate parts.

6.91 m² / kg Coverage

Liquid Rheology & Substrate Wetting

Precise Viscosity Control & Acute Angle Penetration

Engineered for flawless wetting on metals, glass, and ceramics, reaching complex geometries where powder coats fail.

Axial Flow Impeller Mixing

Gently mix for 15 minutes at 30–100 RPM using an axial flow impeller (propeller blade) sized 10–20 cm depending on container volume. Creates a visible vortex while ensuring homogeneous suspension without foaming.

• Maintains stable colloidal dispersion

100-Mesh Precision Filtration

Filtered through a 100 mesh (105 µm) stainless steel or nylon screen to eliminate micro-agglomerates, guaranteeing smooth atomization through standard spray gun tips.

• Ensures flawless atomization and zero clogging

Aqueous Clean-Up & Zero Dilution

Supplied at ready-to-spray viscosity (250–750 cps) requiring no additional dilution. Equipment clean-up is safely and cleanly performed using water.

• No hazardous thinners required

Engineering Datasheet (TDS)

Physical Constants & Cured Film Specifications (420-210)

Physical constants are averages only and may vary up to ±5%.

Liquid PFA Properties (420-210)

Product Code	420-210 Topcoat
Color / Appearance	Clear / Transparent
Coverage (@ 25 µm / 1.0 mil DFT)	6.91 m²/kg (365 m²/L)
Viscosity (Brookfield RVT)	250 – 750 centipoises (cps)
Volume Solids	20.8 – 24.8 %
Weight Solids	37.6 – 41.60 %
Density	1.29 kg/l (10.8 lbs/gal)
Flash Point (SETA closed cup)	None

Cured Film Performance & Operating Specs

Max In-Use Temperature	260 °C (500 °F) continuous
Recommended Product DFT	0.8 – 1.2 mil (20 – 30 µm) per coat
Total Film Build Capability	Up to 3 mil (75 µm) via multiple coats
Dielectric Breakdown Strength	> 50 kV / mm
Pinhole Spark Integrity (NACE SP0188)	Zero Failure @ 5 kV / mm
Surface Tension / Non-Stick	18 dynes/cm (Ultra Low Energy)
Clean-Up Solvent	Water
Recommended Primer	420G-70X series or 420-314 (8–10 µm)

Applicator Shop Floor Standard

Application Method, Drying & Curing Schedules

Precision liquid spray parameters for metals, glass, and ceramic substrates.

STEP 01

Substrate Preparation & Mixing

Apply to clean substrate free of residual oil. Mix well for 15 minutes with axial impeller (50–100 RPM). Filter through 100 mesh (105 µm) stainless steel or nylon screen.

STEP 02

Reduced Pressure / HVLP Spraying

Use Reduced Pressure, conventional, or HVLP gun. Nozzle: 1.0–1.4 mm. Air pressure: 2.0–3.0 bar. Apply over air-dried or force-dried primer (8–10 µm).

STEP 03

Drying Flash-Off

Dry coating for 10 minutes at 150 °C (300 °F) to evaporate water completely before high-temperature baking.

STEP 04

High-Temp Curing

Cure 5 or 10 min at 750 °F (400 °C). For multiple coats: first coat 15 min at 700 °F (370 °C), subsequent coats 5 or 10 min at 750 °F. Bakes at 800 °F reduce any brownish cast.

Recommended Spray Setup & Parameters (420-210)

Gun Type: Reduced Pressure / HVLP / Conventional

Fluid Nozzle: 1.0 – 1.4 mm

Atomizing Air Pressure: 2.0 – 3.0 bar

Filtration Screen: 100 Mesh (105 µm)

Equipment Clean-Up: Water

Industrial Deployment

Engineered for Acute Angles & High-Performance Topcoats

Trusted worldwide in general industrial manufacturing, food processing equipment, and office automation.

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General Industrial Components

Provides thin, uniform anti-stick barriers on parts with acute angles or intricate geometries where powder coatings cannot easily reach.

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Food Processing Equipment

FDA-compliant liquid PFA topcoat (420-210) offers pristine non-stick release for commercial baking molds, chutes, and food handling equipment.

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Office Automation & Rollers

Ensures smooth toner and paper handling in office automation equipment, preventing adhesive build-up and reducing friction on precision rollers.

Storage & Aqueous Shelf Life

Gently mix (15 min at 30 RPM) before use. Shelf life is 12 months at optimal storage conditions: 18 °C–27 °C (65 °F–80 °F). Maximum storage temperature 40 °C (105 °F).

• Water-Based Dispersion: Protect from freezing (Transport 5 °C–40 °C)

• Gentle Agitation Required Prior to Spray Application

Ensure all containers are securely sealed after use to prevent skinning or evaporation losses.

Regulatory Compliance & Food Contact

US FDA Food Contact

Fully compliant with US FDA food contact regulations when paired with compliant layers

EU Regulation 1935/2004

Meets EU requirements for materials intended to come into contact with food

GMP Compliance

Manufactured under Good Manufacturing Practices Regulation (EC) n° 2023/2006

ISO 9001:2015

Strict batch consistency and quality management systems

Everflon™ Techyours™ PFA Water-Based Series