Patent ID: 8864047

Claim:
A process of cleaning-in-place a drying oven after producing a multilayer composite within a coating installation, comprising the following steps: applying one or more layers to a substrate by coating with one or more liquid components, drying the coated multilayer composite in a drying oven having multiple drying segments with each of said drying segments having a separate outer housing, the drying oven air circulation is set entirely to fresh air supply during the drying of the coated multilayer composite in the drying oven, rolling up the dried multilayer composite, and cleaning-in-place the drying oven as a final step, including the interior of the outer housing and all fixtures of each of the drying segments of the drying oven having no dead spaces wherein the interior of the outer housing and all fixtures have not been cleaned and the entirety of the interior of the outer housing of each of the drying segments and all fixtures are cleaned without disassembly via a cleaning-in-place technique due to a system integrated into the drying oven, wherein the system includes each of said drying segments of said drying oven comprising transport rollers to move the coated multilayer composite through said drying segment within the drying oven, and said transport rollers are formed from hollow shafts equipped with spray nozzles for emitting cleaning fluid directed to and for contacting and cleaning without obstruction of the entirety of the interior of the outer housing of each of said drying segments and all fixtures therein without any dead spaces.