Sheet in ECTFE 2000x1000 mm natural

ECTFE is a fluoropolymer that belongs where the chemistry is at its toughest. The material is a copolymer of ethylene and chemically bound chlorine and fluorine, and that chemical structure is the reason so few liquids bite on it. The sheet stands up to strong acids, bases, solvents and oxidizing media, and keeps its properties across a wide temperature span. The density is around 1.68 g/cm³, which is high compared with ordinary construction plastics and a direct result of the fluorine content. This is a material you choose for a defined reason, not because it is the cheapest.

The central thing about ECTFE is the chemical resistance. Few media break down or discolor the material, and the surface is smooth and dirt repellent, which makes it hard for coatings and deposits to stick. The material takes up practically no moisture, so the sheet does not move dimensionally with the humidity and does not build up stresses in wet places. ECTFE also takes a high working temperature compared with everyday plastics, and has good resistance to UV and weather. Together that means the material lasts a long time even in exposed installations, both indoors in closed equipment and out in the open where other plastics crumble.

In sheet form ECTFE is used above all as lining and internal cladding in tanks, vats and troughs holding aggressive chemicals. It works as a barrier between a load-bearing substrate, often steel or a cheaper plastic, and the medium that would otherwise attack the structure. Guard screens, splash guards and dividers in surface treatment plants are another common area. The material also shows up as process parts, shelves and work surfaces in the semiconductor and chemical industries, where both cleanliness and chemical resistance are decisive and where an ordinary plastic would contaminate or break down. Where other materials discolor or crumble, ECTFE holds its shape and function, which means the lining lasts for years instead of needing replacement.

On machining, the sheet can be cut, drilled and worked, and it can be welded to build tight linings and structures. Because it is a fluoropolymer it differs from everyday plastics in how it should be handled. Welding needs the right temperature and technique and should be done by someone used to the material, preferably with a matching welding rod in the same material so the joint keeps the same chemical resistance as the sheet. Prepare and clean the surfaces carefully; the material is rewarding but does not forgive sloppiness in the joint. A test weld on offcuts before you go at the real structure is time well spent.

The thickness you choose governs both the protection and how the sheet behaves during welding and forming against a substrate. Thicker material takes more mechanical load and abrasion, thinner follows shapes more easily and is simpler to join against complex surfaces. Think through how the lining is going to be fastened and where the joints end up before you order. We cut the material to your dimensions. If you want to know whether ECTFE is the right fluoropolymer for your chemical and temperature, or whether another grade or another fluoropolymer suits better, get in touch and we will go through the conditions together before you commit.

ECTFE belongs to the fluoropolymer family, and within that family it is one of the mechanically tougher ones. It is not as slippery as some purer fluoropolymers, but it takes abrasion and impact better, which makes it suitable as a lining where there is also mechanical action from flow, stirring or particles. It is that combination of chemical and mechanical resistance that justifies the choice of material.

In the manageable 2000x1000 mm format the unbacked ECTFE sheet suits smaller lining jobs and components. Natural in color and weldable on site.

When fitting, you clad the sheet against a load-bearing substrate of steel or a cheaper plastic, and weld the joints together into a tight cladding. Keep in mind that the substrate has to be clean and stable, and that the lining needs to be completely free of holes and poor joints, because otherwise the medium finds its way in behind the layer. So plan the joints to end up where you can reach to inspect and repair them.