PROCO-ETFE and PROCO-ETFE DA
PROCO-ETFE is a high-performance ETFE coating (ethylene tetrafluoroethylene) that is characterised by its outstanding resistance to almost all chemicals, acids, alkalis and organic solvents.
The chemical-resistant coating can withstand temperatures of up to 150 °C and is suitable for demanding applications in the chemical industry, semiconductor industry, electromobility and in mechanical and plant engineering.
The key properties of PROCO-ETFE include its high chemical resistance and temperature resistance. These are crucial for use under extreme process conditions.
PROCO-ETFE DA - White, FDA-compliant ETFE coating
With PROCO-ETFE DA, HÜNI+CO is expanding its portfolio with a white, FDA-compliant ETFE coating for regulated industries.
The coating is suitable for components in the food industry, pharmaceutical industry, chemical industry and semiconductor industry and combines the properties of ETFE with additional requirements for documentable processes.
PROCO-ETFE DA is resistant to a wide range of aggressive media such as acids, alkalis, solvents and industrial cleaning chemicals.
The key properties include
- Layer thicknesses from 300 to 800 µm: PROCO-ETFE DA creates design leeway where thinner coatings reach their geometric or mechanical limits. The high layer thicknesses increase resistance to mechanical stress and contribute to longer service lives.
- FDA conformity: PROCO-ETFE DA is FDA-compliant and therefore suitable for documented use in pharmaceutical and food production. This creates planning security for internal qualifications and external audits.
- Smooth, non-porous surface: The surface is closed and has no microcracks or deposits. Cleaning media can take full effect, which is particularly relevant in GMP environments and validated cleaning processes.
- Dielectric strength: The coating is suitable for applications in measurement technology and process analytics, for example for rod electrodes or measuring sensors.
The white version of PROCO-ETFE is a particularly suitable option where PROCO - E-CTFE DA in pearl white was previously used. A suitability test is recommended for new or unknown media, as colour changes may occur in individual cases. We would be happy to assist you with this process.
Properties of ETFE
| Type | ETFE |
|---|---|
| Characteristics: | Thermoplastic |
| Colour shade: | approx. RAL 6011 |
| pH range: | depending on the filling medium and temperature |
| Layer thickness: | 500 - 1000 μm |
| Shore hardness: | D 72 |
| Specific weight: | 1.7 g/cm3 |
| Melting point: | 267° C |
| Heat load dry: | up to 150° C |
| Heat load wet: | up to 150° C |
| Diffusion resistance: | Atlas Cell test; HCL 0.05N; 100° C Layer thickness 350 - 500 μm |
| < 72 h | |
| Pore test: | 5000 V/mm (according to DIN 55670-A) |
| Thermal conductivity: | 0.24 W/m k |
| Water absorption in 24 h: | < 0,03 |
| Pre-treatment: | Corundum radiation Sa 3 |
Features of PROCO-ETFE DA
PROCO-ETFE DA is a white, FDA-compliant variant of PROCO-ETFE for components in the chemical, pharmaceutical, food and semiconductor industries.
- White coating
- FDA-compliant
- Smooth surface
- High chemical resistance
- Coating thicknesses up to 800 µm
Certain media may cause optical changes (discolouration) to the white surface without impairing the protective function.
Properties of ETFE DA
| Type | ETFE |
|---|---|
| Characteristics: | Thermoplastic |
| Colour shade: | white |
| Layer thickness: | 400 - 800 μm |
| Shore hardness: | approx. D 72 |
| Application temperature: | 150 - 180°C (dry) |
| Thermal conductivity: | 0.24 W/m k |
| Surface: | smooth, non-porous |
| Abrasion resistance: | 14.3 mg (Taber/1 kg/1000 cycles) |
| Special features: | Suitability for contact with food - FDA 21 CFR 175.300 (up to 121°C) |
The guidelines of DIN EN 14879-1 apply to the planning and production of structures to be coated.
Apparatus engineering & mechanical engineering
Apparatus engineering:
Columns, reactors, pumps, valves, chemical containers, agitators, temperature sensors, centrifuges, laboratory equipment, water treatment plants (ozone-resistant), fittings, ultrapure water plants
Mechanical engineering:
Rollers, tubs, mixers, screw conveyors, moulds, slides, insulation, medical instruments, drying cabinets
Typical applications for PROCO-ETFE DA (white, FDA-compliant coating):
Agitators, pump housings, fittings, mixing containers, product carriers and transport baskets, dosing equipment, channels, lidded drums, nozzle rings, rod electrodes and components in process engineering
Let's talk about your project
Do you have a specific component or are you facing challenges with chemicals, temperature or service life?
We analyse your component, the medium used and the requirements in detail and find the right solution with the right ETFE coating - from the initial assessment to sampling.
PROCO-ETFE is a fluoropolymer coating system based on ETFE with high chemical and temperature resistance for industrial applications.
PROCO-ETFE DA is the white, FDA-compliant variant of PROCO-ETFE for components in the chemical, pharmaceutical, food and semiconductor industries.
PROCO-ETFE DA is the white, FDA-compliant version and is used in particular in regulated areas.
Yes, the coating is FDA-compliant and suitable for use in the food and pharmaceutical industries.
In most cases, yes. Components that were previously coated with PROCO - E-CTFE DA can usually be converted directly to PROCO-ETFE DA. For specific requirements, this is checked in advance.
With certain aggressive media, the white surface may show discolouration without the protective effect being impaired. For critical applications, a suitability test with the specific medium is recommended.
Depending on the requirements and component geometry, layer thicknesses between 300 and 1000 µm can be realised. The optimum design is determined as part of the technical coordination.
Yes, the dielectric strength makes the coating suitable for applications such as rod electrodes or measuring equipment.
The maximum operating temperature is around 150 °C.