How ETFE printing and adhesion durability lasts?

Architectural ETFE (Ethylene Tetrafluoroethylene) is a remarkably durable, lightweight, and transparent fluoropolymer material used in building envelopes. It provides exceptional strength, UV resistance, thermal performance, and design flexibility, making it ideal for innovative and sustainable architectural applications. Like other plastics, such as polyethylene and polypropylene, ETFE has chemically inert and nonporous surfaces with low surface tension, making them unreceptive to bonding with printing inks, coatings, and adhesives. Therefore, a Corona treatment (also known as air plasma) is a surface modification technique that employs a low-temperature corona discharge plasma to alter the properties of a surface. This plasma is generated by applying high voltage to an electrode with a sharp tip, where the plasma forms. A linear array of electrodes is often used to create a curtain of corona plasma. Materials like plastics, cloth, or paper can be passed through this corona plasma curtain to change their surface energy. All materials, including ETFE, possess inherent surface energy. Surface treatment systems are available for nearly any surface format, including dimensional objects, sheets, and roll goods handled in a web format. Corona treatment is a prevalent surface treatment method in the ETFE film, extrusion, and converting industries.

It is worth mentioning that printing on a transparent ETFE envelope is crucial for controlling solar heat gain through the envelope, and it is typically added only to the outer layer.

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