Effects of the Temperature and Relative Humidity on the Compression Strength of Corrugated Cardboard BoxReport as inadecuate




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Cardboard is very sensitive material to the environmental conditions, especially moisture. The paper evaluated the compression strength of corrugated cardboard boxes. The mechanical performance test was carried out under a controlled atmosphere that the temperature was from 20℃ to 50℃ and the relative humidity RH levels from dry conditions50%RH to severe conditions 90%RH. The results tested showed that the maximum compressive load of empty corrugated cardboard box sealed exposed to moisture content decreased with the increase of temperature and relative humidity. The parameter was reduced nonlinearly. The strength of cardboard specimens measured conditioned with temperature 20℃, 30℃,40℃ and 50℃ dropped by 36.32%, 38.36%, 40.58% and 36.36% respectively when the relative humidity changed from 70% RH to 90% RH. When the temperature went up from 20℃ to 30℃, the compression value dropped quickly. The fall percentage was 6%,6% and 4% respectively, corresponding the relative humidity was 40% RH,80%RH, 90%RH. Finally, the compression strength calculated was carried by mean of the TOPS Pro software. Comparing the data tested in the lab with that computed by Mckee formula, the rule was discovered that the former was bigger than the latter.

KEYWORDS

corrugated cardboard, compression strength, relative humidity, Mckee formula

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Author: Meihua Liu, Chuanmin Yang, Dongai Wang, Hongwei Ji

Source: http://www.scirp.org/



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