Bellmer installs TURBOCoater: first of its new coater line
Bellmer GmbH, Germany says the heart of its new coater system – the application head – comes from the Swiss coating nozzle specialist TSE Troller AG. It combines simultaneous application of several layers with the highest quality and economical use of resources.
Curtain coating is a process in which the coating is applied by passing a paper web under a falling curtain of liquid. This predosed coating process has the benefit of precise and uniform application. The simultaneous application of several layers increases the productivity of the system and facilitates the development of new products.
The core of the plant is a four-metrewide, multi-layered cascade nozzle. The production of the nozzles requires a level of precision which, depending on the working width and customer requirements, is up to ±0.25 microns. By comparison, a human hair is about 50 microns thick or 100 times wider.
The curtain cascade nozzle for this project is designed to apply two coats simultaneously. Preparations are already in hand to expand the nozzle to three layers in the future.
For over 50 years, TSE Troller has specialized in pre-dosed coating systems. It has delivered over 600 nozzles worldwide in a wide variety of industries, including over 100 curtain nozzles for paper and board manufacturers.
Bellmer designs and manufactures all the peripheral technology for the coater and contributes its know-how and knowledge of paper and board production. An infrared drying extension is part of the delivery as is the workstation for the application media with ventilation, web guiding and engineering.