Mullen Burst strength tester (C type rapid hydraulic clamp) No.2020

In TAPPI Standard, burst strength is specified as a value of pressure that is necessary to burst the paper sheet, by applying pressure to it with a certain speed and deforming the paper into the shape of a 30.5 mm diameter ball. This machine is designed to measure burst strength of paper, paperboard, film or the like of 0.64 mm or less in thickness. The pressure gauge reads a value of pressure at the moment the specimen bursts under the pressure generated via a rubber diaphragm by the movement of a motorized plunger. Clamping pressure of a specimen affects the burst strength, but with this machine, it is possible to fix the specimen easily at a certain level of pressure, by reading the pressure gauge on the hydraulic cylinder of the clamping handle and by controlling the pressure.