Tribological Assessment
Frictional property measurements on plastic films and paperboard substrates establish the force required to initiate and maintain sliding contact between surfaces. Compliance with ISO 8295 friction testing establishes both static and kinetic coefficients of friction using a horizontal sled apparatus. A motorized sled wrapped with test material moves across a stationary bed at a constant velocity, while a force transducer records peak resistance and average sliding force.
Dynamic Analysis
Smooth movement through high-speed packaging machinery depends on balanced friction characteristics to prevent double-feeding or line jams. Conducting ISO 8295 friction testing involves placing a two-hundred-gram sled onto the test substrate and pulling it across a flat platen at a constant speed of one hundred millimeters per minute. The initial force peak required to overcome stationary contact yields the static coefficient of friction, whereas the mean force recorded during steady sliding determines the kinetic coefficient.
Test results guide converting operations, ensuring film-to-film and film-to-metal friction levels match automated packaging equipment requirements. Environmental humidity shifts alter surface energy and moisture adsorption, changing friction values across storage periods.
Machine Interface
Inconsistent friction coefficients cause misfeeds in automated carton folder-gluers. Excessively high friction stops container movement, whereas low friction causes slipping during transport.
