Slot Die and Curtain Coating Technology
topic
Slot die coaters extrude coating compound through a precision-machined slot of defined lip geometry directly onto the moving fabric surface without mechanical contact, providing coating weights from 5 to 200 grams per square metre with across-width uniformity of plus or minus 2 percent from the hydrodynamically controlled slot die geometry, while curtain coaters use gravity-fed curtain flow for multi-layer simultaneous application.
Role
Provides superior coating weight uniformity and multi-layer simultaneous application capability for precision technical coatings where the non-contact application eliminates the mechanical disturbance from knife contact and the hydrodynamic slot die design achieves the coating weight uniformity required for high-performance barrier, optical, and functional coatings on technical textile substrates.
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