KROENERT expands its portfolio with a coating unit for simultaneous double-sided siliconizing


A coating unit for simultaneously siliconizing both sides of a web (photo: KROENERT)
A coating unit for simultaneously siliconizing both sides of a web (photo: KROENERT)

KROENERT GmbH & Co KG (Hamburg, Germany), a global leader in the manufacture of customised coating, printing and laminating systems, is introducing the first coating unit for simultaneously siliconizing both sides of a web with solvent-free silicones. Expanding its range of products, KROENERT has redesigned a roll-to-roll system especially for this purpose. This coating unit can be included in new plants or retrofitted in existing facilities.  Retrofits offer a special advantage: the flotation dryer already installed in many plants can be used for the non-contact transport of webs and combined with a non-contact air turn in front of the dryer. This feature cuts down on costs for equipment and operations and minimises environmental impact. The process of double-sided siliconizing is especially suitable for paper webs used as release liners for adhesive tapes, for example, and for graphic products.

The simultaneous coating of the front and back of paper webs substantially prevents paper from drying out and the coating machine can be considerably shorter in length, taking up less space. Moreover, the system requires fewers operators, allowing one person to oversee two coatings at the same time. As only one dryer is needed, this process is very resource-efficient and consumes less energy. The siliconizing unit can also be utilised for one-sided coating and operate flexibly with other substrates and silicones at any time.

“Our new siliconizing unit, which simultaneously coats both sides of a web using roll-to-roll technology, has proven successful in practice and is an outstanding addition to our portfolio of top-quality products, which to date includes systems primarily with gravure rollers for double-sided coating,” says Wolfram Szczepaniak, Head of Technology at KROENERT. “The expansion of our product lines of efficient coating solutions is an ongoing process and we are already testing the next developments in our Technology Centre.”