Burst resistance
The rupture strength of corrugated cardboard refers to the maximum pressure per unit area that can be sustained perpendicular to the surface of the sample under certain testing conditions. The unit is Kpa.
Burst determination of the commonly used sample chuck system, the test will be placed on the film and the sample with the sample clamp, and then evenly pressure, the sample was measured to prevent the slide, the sample chuck should have Not less than 690kPa clamping force. Under pressure, the sample and the film are free to bulge until the sample ruptures, and the bursting strength of the sample is the maximum force applied at this time.
Sampling should be taken without watermark, break, wrinkles, damage, size 140mmx140mm sample 12, that is, from the three sample boxes, each take four, one side of the sample should be parallel to the corrugation direction. Bursting strength test, the sample is divided into two groups, one group to the rubber membrane affixed to the front, the other group affixed to the rubber membrane for testing, when the sample was crushed, read the test values. In order to ensure the accuracy of the results, the arithmetic mean of all the measured values ??can be used to indicate the degree of bursting strength. The precision of the result depends on the uniformity of the sample and other factors such as the error of the pressure gauge, the clamping force, the rate of pressurization, the presence of air in the system, the condition of the film, and the like. Cardboard box manufacturers,Custom Cardboard Boxes, Folding Carton Manufacturers, Cardboard boxes suppliers China, Carton box manufacturers, www.cardboard-box-manufacturers.com
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