Film Tear Monitoring in Packaging Machines with Retro-Reflex Sensors for Transparent Objects

In packaging systems with horizontal and vertical packaging machines, a continuous supply of film material must be ensured. If the (semi-)transparent films tear during the packaging process, this leads to faulty packaging. To detect this, the presence of the film between two deflection rollers is checked via special retro-reflex sensors for transparent objects. If the sensor reports a crack in the film, the affected areas of the system switch off immediately. Thanks to the dynamic switching threshold readjustment, the sensors work reliably even in the event of contamination.