Flexible Insulating Foils


Flexible insulating substrates used today in electronic components are typically polymers that have limited stability under harsh processing conditions, such as high temperatures and vacuums. Cerablak® insulating coatings on stainless steel foil provide thermally-stable electrical insulation on a flexible substrate and are ready to serve the emerging needs of the electronics industry.

 

Limitations of Polymers 

An industry push toward higher-performance devices also means harsher production conditions, including higher temperatures, extreme atmospheres, and tighter tolerances. Despite recent advances in polymer foil, harsh production environments can tax them beyond their limits; thermal decomposition, dimensional instability, water absorption, and outgassing can be monumental hurdles in high-performance flexible electronic and roll-to-roll processing.

 

Inorganic Insulator on Metal Foil
ATFI’s proprietary Cerablak® UTF provides planarization and insulation to flexible substrates.  Applied to polished or unpolished stainless steel, substrate roughnesses can be dramatically reduced to Ra levels below 10nm without the complications and costs associated with fine polishing.

 

The electrically-insulating coating is stable in high vacuum environments and can withstand temperatures above 800°C while providing stable surface roughness and insulation resistance, thus providing an ideal buffer layer for use in CIGS solar modules, displays, next-generation lighting and battery technologies, and other flexible electronics.