Curtain Coating for Simultaneous Multi-Layer Application
topic
Curtain coating forms a free-falling curtain of coating compound or multiple compound layers from a slot die positioned above the moving substrate, with the curtain falling under gravity onto the substrate below at a defined curtain height that absorbs coating impact energy, enabling simultaneous multi-layer application of different compound formulations in a single coating pass at high production speeds above 200 metres per minute for photographic, inkjet, and specialty functional coating applications.
Role
Enables simultaneous multi-layer application of up to five different coating layers in a single pass at high speed through the free-falling curtain that coats the substrate without mechanical contact, with curtain coating providing the combination of multi-layer capability and high production speed that makes it the preferred method for high-value multi-functional coatings requiring precise layer thickness control for each component layer.
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