Knife-Over-Roll Coating Systems
topic
Knife-over-roll coating systems meter a controlled thickness of coating compound onto the fabric surface using a fixed knife blade positioned above a driven roll, with the gap between knife and fabric surface controlling coating weight from 20 to 500 grams per square metre for polyurethane, acrylic, PVC, and silicone coating compounds applied for waterproofing, blackout, and barrier applications on tent, banner, and technical textile fabrics.
Role
Provides the most versatile and widely used coating application method for medium to heavy coating weights on technical textiles by using a simple and adjustable knife gap to meter coating compound quantity, with knife coating being the primary method for producing waterproof and blackout coated fabrics for outdoor, marine, and technical applications where high coating weight and uniform coverage are the primary performance requirements.
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