Correlation of peel and burst tests for pouches

Theoretical equations based enforce diagrams were developed in order to exp lain pouch behaviour during a restrained burst test. According to the resul ting equation, P = 2 S/D, the burst pressure (P) increases directly with se al strength (S) and inversely with the distance between the restraining pla tes (D), After performing a restrained burst test and a peel test on Tyvek/ plastic pouches, it was found that the theoretical development did not exac tly explain burst test results in terms of peel rest values. The test resul ts demonstrate that even though the peeling times for the peel and burst te sts were controlled to be the same, the theoretical formula (P = 2 S/D) ten ds to overestimate the burst pressure. The overestimation increases at smal ler gaps. These results are an indication that the formula is not universal and they suggest that it is an oversimplification. It might work for some materials at a particular set of testing conditions but not for others. Cop yright (C) 2001 John Wiley & Sons, Ltd.