[Abstract] On the basis of introducing how to use the stacking strength analysis of TOPS Pro packaging design software TOPS Pro to carry out the analysis of stacking strength in transport packaging design, the McKee formulae for calculating the compressive strength of corrugated cardboard boxes for outer packaging are described in detail. Application of TOPS Pro Stacking Strength Analysis.
Key words: corrugated carton transport packaging; McKee formula; compressive strength
CLC number: TIM82; TP391 Document ID: B Article ID: 1001-3563 (2004) 05-0030-03
1 TOPS Pro Overview
TOPS Pro is the world's most widely used packaging structure optimization design software introduced by the US TOPS company. One of its functions is the stacking strength analysis in the design of corrugated carton transport packages. After the user has finished inputting the relevant parameters of the corrugated box and pallet, he selects the “Stacking Strength” screen and the dialog box for calculating the stacking strength immediately pops up (Fig. 1). The user enters (or selects) in each box: calculation method (ring pressure method, edge pressure method, Keli Carter formula method), box specification (structure size, weight, gap between tongues, product support force, direction) ), Environmental conditions (storage time, relative humidity, number of stacking trays), assembly status (stacking style, number of box supports when pallet stacking is high), and printing status (print amount, ink type).
After the parameters are defined, the stacking strength analysis results (see Figure 2) are displayed. Figure 2 consists of two parts:
1) List of all palletizing scheme stacking strength analysis results. Including: cardboard grade and structure, rake type, compressive strength theoretical and actual values, safety factors and margins, stack height trays, edge pressure value, unit area price.
2) Statistics of the stacking strength analysis results of the selected palletization plan. Including: the transport box and pallet parameters that have been entered, the stack palletizing format, and the pressure on the bottommost carton.
The stacking strength refers to the maximum pressure load that can withstand the container without damage under certain circulation environment conditions. The ability of the corrugated box container to withstand the upper load is affected by the structure of the container itself and its circulation environment, the inner packaging structure supporting the load, the inner partition, the corner support, and the like. The compressive strength of corrugated boxes is related to the stacking strength.
The TOPS Pro software uses the McKee formula to calculate the stacking strength of 0201 corrugated cardboard boxes.
(to be continued)
