Dynamic Strain Rate Modeling for Multi Ply Boxboard under Rapid Compression
Dynamic strain rate modeling predicts multi-ply boxboard Z-direction compression and interlayer shear collapse during high-speed converting and package drops.
Die Cutting Speed
Production Rate
Maximizing throughput in carton converting facilities depends on the velocity at which the sheets are stamped. The die cutting speed represents the frequency of the reciprocating dies as they strike the substrate to create creases and cuts. It determines the output of the converting line.
Operational Boundary
Operating the equipment at high velocity increases the likelihood of board cracking and register misalignment. The die cutting speed must be balanced against the board weight and the complexity of the box layout to prevent waste. When the tooling strikes the paperboard too fast, the fibres can rupture unevenly along the crease lines, which weakens the hinges of the finished carton.
This rapid action generates excess heat that can also degrade the steel rules and ejector pads, leading to frequent tooling replacement.
Mechanical Limit
Modern automatic platen presses utilize sophisticated feeder and delivery systems to maintain high run rates. Sustaining a high die cutting speed requires precise adjustment of the sheet registers to ensure each sheet lands in perfect alignment under the tooling. When the board grade is changed, the press operator must re-calibrate the speed to prevent jam-ups and feeding failures.
This calibration is particularly delicate when handling lightweight or recycled boards that exhibit lower stiffness.