Measurement of changes in torsional stiffness of press‐formed paperboard packages induced by heat load utilizing a developed measuring device

The press-forming process and the effects of parameter variation on forming have attracted great interest lately. dimensional accuracy formed trays rigidity stability packages are crucial factors for functionality in packaging lines, especially fast operating machinery. torsional stiffness must be at a sufficient level to ensure subsequent processes logistics. objective this study was develop build device measuring whole tray packages, verify its investigate effect heat load transferred paperboard material trays. operation novel tester confirmed, found suitable thermal response sample materials fibre direction. Thus, analysed does not need homogeneous property since differences noticeable measurement results. In addition, results indicate that blanks should die cut machine direction paperboard. increases, outer dimensions decrease as function input. first feature is desirable second can compensated by competent design. To conclude, use higher mould temperatures recommendable if integrity package compromised.