FEP Non-Stick Coating Services

Fluorinated ethylene propylene (FEP) coatings offers several advantages as a coating material. DuPont’s FEP coatings are a great option to use for non-stick, corrosion resistant, and chemical resistant applications. This coating is an excellent option for applications that require the advantages of PTFE coatings, but need a material to be easy to form into different shapes. Delta Coatings & Linings offers FEP coating services to a variety of industrial industries in the United States. FEP coatings are ISO 9001 certified.

Delta Coatings & Linings proudly uses Dupont's FEP because they originally invented FEP and are the industry leader of FEP.

What is FEP Non-Stick Coating?

Fluorinated ethylene propylene, also known as FEP, is a fluorocarbon-based polymer coating. It is an excellent option for applications that require non-stick, chemical resistance and high release properties.  This coating is non-porous because it melts and flows during the baking process which allows for superb chemical resistance. FEP coatings can be cut, thermoformed, heat sealed, and welded for many applications.

Although the PTFE coating is also non-stick, FEP film has a softer, more flexible coating. FEP coatings have a high release which melts at 260° C (450° F) and is resistant to sunlight.

DuPont™ FEP 959G-2XX Industrial Nonstick Coatings

DuPont™ FEP industrial coatings 959G-2XX are solvent based, one coat, finishes designed for use under moderate abrasion and where nonstick properties contribute to product performance. These nonstick finishes are designed for moderate cure temperature and the coatings can also be used as primers. FEP Coatings are also corrosion and chemical resistant.

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Property Data

¹ Physical constants are averages only and are not to be used as product specifi cations. They may vary up to 5% of the values shown

² Theoretical coverage at dry fi lm thickness (DFT) of 1.0 mils (25µ) based on 100% application effi ciency. It does not take normal production losses into account

³ Brookfield RVT (Measured with spindle 2 at 20 RPM/25 °C)

FEP Coating Applications

FEP film can be easily cut, thermoformed, heat sealed, and welded for applications such as diaphragms, gaskets, protective linings, or thermoformed containers. FEP Coatings are used in many industries including:

• Food & beverage appliances including industrial bakeware and other food grade applications. FEP coatings are acceptable for direct contact with food including cookies, bread and other pastries that bake at 300° F.

• Molding Industry for molds and molding components. FEP coatings eliminates the need for oil as a release agent during the molding process.
• Electrical Components for computers and aerospace industries. FEP’s dielectric properties make it an ideal coating for different electrical components.
• Outdoor Applications due to the FEP coatings resistance to sun exposure and harsh weather.
• Medical FEP coatings can provide low friction and biocompatibility which is very important in the medical industry. This coating is also FDA approved, non-porous, flexible and weldable.
• Chemical Processing due to FEPs non-porous coatings, it has a higher chemical resistance

Application Method

Substrate Any metal substrate except high copper containing alloys Substrate Preparation Degreasing, grit blasting is recommended, but not required. Pre-bake metal 15 min. at 343 °C (650 °F).Apply over clean, roughened surface. Application to food contact approved conversion coatings is suggested where grit blasting is not practical. Any residual oil on the surface will affect the color of the cured fi lm and will adversely affect adhesion.

Coating Preparation Stir well before use. Roll or mix with a propeller-type mixer until contents are homogeneous.

Filtering Strain through 150-mesh wire screen or cheese cloth.

Application Use conventional industrial spray equipment. Agitate during use of sprayed from a pressure pot. Manual or Automatic Spray: No reduction required. If lower viscosity is desired,reduce with TN-8595, NMP or MIBK.

Recommended DFT Film Thickness 15–30 µm (0.6–1.2 mil) DFT per coat. These products are recoatable. Maximum DFT in multiple coats: 64 µm (2.5 mil).

Curing (Metal Temperature) One Coat System Flash dry in air 1–5 min. prior to bake. Note: If humidity is 85% or above, do not air fl ash. Instead, place in oven immediately to minimize absorption of moisture which may cause pinholes and water blisters. Bake 15 min. at 150 °C (300 °F), followed by 15 min. at 345 °C (650 °F) Multiple Coats For dry fi lm builds greater than 30 µm (1.2 mil), bake initial coat and any intermediate coats: 15 min. at 150 °C (300 °F) Final bake: 15 min. at 345 °C (650 °F)

Clean up TN-8595

Thinner/Additive TN-8595

Handling and Storage *

• Storage life is 18 months maximum at room temperature.
• Storage temperature 18–27 °C.
• Roll for 30 minutes at 30 RPM once per month.
• Warm containers to room temperature and roll completely
• before use.
• Solvent-based product
• For medical application and development, please consult DuPont™

Food Contact

959G-203 and 959G-205 coatings are designed to be used in direct contact with food. Applied according to the below application method and instructions, the fully cured coating will comply with US FDA food contact regulations, 21.CFR, and can be sold and/or used for food contact applications for nonstick coatings in Europe following the national legislations of each European country, having specific regulations for this category of coatings (nonstick, high temperature resistant).

Any changes or variations of individual coating thickness from what is indicated in this fact sheet should be assessed for food contact applications prior to its use. For details and information please contact your DuPont representative.

• Incinerate only if incinerator operates at 800 °C or higher and is capable of scrubbing out hydrogen fluoride and other acidic combustion products.
• Industrial fluoropolymer waste containing additives such as solvents, primers or thinners must be regarded as special waste. Companies should contact their local waste disposal authorities for details of the relevant waste disposal regulations.
• Empty containers should preferably be cleaned and recycled. If this is not possible, the containers should be punctured or otherwise destroyed before disposal.

Disposal and Other Considerations

Please follow these guidelines as outlined in the “ Safety Handling Guidelines for Fluoropolymers.” For disposal, please follow these guidelines:

• All treatment, storage, transportation, and disposal of this product and/or container must be in accordance with applicable national and local regulations.
• Do not discharge aqueous dispersions to lakes, streams or waterways.
• Separate solids from liquid by precipitation and decanting or filtering. Dispose of dry solids in a landfill that is permit ted, licensed or registered to manage industrial solid waste. Discharge liquid filtrate to a wastewater treatment system.