ClearStar is a double doctor for the suction couch roll, which prevents water that has been carried along from bleeding through onto the paper web. A higher dry content is thus possible.
ClearStar consists of a new stainless steel pan for the suction couch roll with integrated attachment points for the doctor holder. A maximum dry content can be achieved by two doctors arranged one after the other. Deflections of the pan and roll can be compensated for and water can therefore be prevented from bleeding through onto the paper. An existing high-pressure shower can be reused. When the holes are continuously cleaned, a longer roll service life is possible, and a more uniform moisture cross profile is also achieved.
ClearStar is used for doctoring on suction couch rolls. It can be installed while using an existing pan or as a completely new unit with a new stainless steel pan.