Knife Over Roll Coaters
Knife Over Roll Coaters / Applicator
Elevate Your Coating Process with our Knife Over Roll Coaters
At U.S. Webcon, we offer a complete line of knife-over-roll coaters and knife over air coater and coating heads developed to meet your production needs with unmatched precision and efficiency.
Our knife-over-roll coater are specifically engineered to perform gap coating on textiles, nonwovens, and other web materials and seamlessly present them to an oven for quick drying. This coating method is particularly effective for high-viscosity coatings such as plastisols.
Comprehensive Equipment List
Our knife-over-roll coater have cutting-edge features and options to ensure optimal performance and customization to fit your specific requirements. Our equipment list includes:
– Unwind Stand with Load Cell Tension Control
– Unwind Accumulator with Integral Pull Roll
– Driven Knife-Over-Roll Coater
– Rewind Accumulator with an Integral Pull Roll and Interleaf Unwind
– Center-Driven Rewind Stand with Load Cell Tension Control
Advanced Features for Superior Performance
Our knife-over-roll coater boast various features that enhance productivity and quality in your coating process. Some of these features include:
– Continuous roll-to-roll operation for uninterrupted production.
– Hazardous location design for added safety and compliance.
– Integrated control system utilizing touch screen HMIs for effortless operation.
– Integrated pull rolls for consistent web tension control.
– Center-driven rewind stand with load cell tension control for precise rewinding.
Versatile Coating Head Configurations
We offer a wide range of coating head configurations to cater to different coating requirements. Our coating head configurations include:
When it comes to high-quality and efficient coating, choose U.S. Webcon’s knife-over-roll coaters. Experience the difference in your production process by trusting our precision-engineered equipment. Contact us today to discuss your coating needs and discover the perfect solution for your business.
What is a knife-over-roll coater?
- A knife-over-roll coater is a type of coating machine used in manufacturing processes to apply thin, uniform layers of coating material to a substrate. The coating material is applied by a doctor blade (or knife) that sits over a rotating roller, which spreads the coating evenly across the surface of the material.
- The substrate is passed through a nip (the gap between two rollers), with the coating material being applied via the knife or doctor blade positioned above a rotating roller. The excess coating material is scraped off by the knife, leaving a thin, uniform layer on the substrate.
What are knife-over-roll coaters used for?
Knife-over-roll coaters are primarily used for applying coatings such as adhesives, varnishes, inks, paints, or other functional or protective layers to substrates like paper, plastic films, or metal sheets. They are widely used in industries like packaging, textiles, automotive, and electronics.
What are the advantages of using a knife-over-roll coater?
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Precision: Knife-over-roll coaters offer excellent control over the coating thickness, which can be adjusted for different application needs.
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Uniformity: They produce a very uniform coating layer, which is critical for high-quality products.
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High-speed production: Knife-over-roll coaters are designed for high-speed processing, making them suitable for large-scale manufacturing.
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Versatility: These coaters can be used for a wide variety of coating materials and substrates.
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What types of coatings can be applied with a knife-over-roll coater?
A knife-over-roll coater can be used to apply a variety of coatings, including:
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Solvent-based coatings
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Water-based coatings
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UV coatings
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Varnishes
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Adhesives
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Inks
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What other types of Knife Coaters are there?
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Knife-over-Air: Applied in air gaps, great for delicate substrates, and precise coatings.
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Knife-over-Plate: Flat plate application for more control over thickness, suitable for high-viscosity coatings.
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Knife-over-Substrate: Direct application to substrate, simpler design for thin coatings.
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Knife-over-Back Roller: Uses a back roller to assist in uniform application and coating control.
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