Bursting Strength Tester This equipment confirms to TAPPI standards and is suitable to test the Bursting Strength (BS) of : Paper, Kraft Board and Corrugated Fiber Board Definition : Bursting strength of a material is defined as the maximum hydrostatic pressure required to produce rupture of the material when a controlled and constantly increasing pressure is applied through a rubber diaphragm to a circular area. Significance : For Paper (TAPPI T 403): Bursting strength is widely used as a measure of resistance to rupture in many kinds of paper. The test is relatively easy and inexpensive to make and appears to simulate some end use requirements. For Kraft Board (TAPPI T 807): The bursting strength test of paperboard, including linerboard, is a composite measure of certain properties of the sheet structure, principally tensile strength and elongation. In general, bursting strength is dependent on the type, proportion, preparation, and amount of fibers present in the sheet and on their formation, internal sizing, and, to some degree, the surface treatment. While bursting strength is an empirical property, this test, in combination with grammage (basis weight), serves to define “standard grades” in commerce. For Corrugated Fiber Board (TAPPI T 810): The bursting strength of combined board is primarily an indication of the character of the materials used in manufacturing a fiberboard box and has value in this respect. Bursting strength of combined board is an optional requirement of the various carrier regulations for shipping containers. The bursting strength of the component paperboard is an important control test in the paperboard mill since the conformity of the finished container is generally controlled by the bursting strength of the paperboard. Triple-wall corrugated board cannot be tested suitably by the bursting method. Testing of double-wall board is of questionable accuracy since it is rarely possible to get sufficiently simultaneous bursts of the multiple facings. The test is simple and rapid to execute, but it must be recognized that it is subject to serious errors if instrument, diaphragm, and gages are not properly maintained or if improper procedures are used Capacities Available : Paper Tester : 0 - 6 kg/cm2 Kraft Board Tester : 0 - 10 kg/cm2 Corrugated Board Tester : 0 - 10 & 0 - 25 kg/cm2 Models available : Various models starting from Economy Analog models to the high-end Fully Automatic Computerized models. This equipment is relevant to : Paper Mills. Carton Manufacturers. Heavy End-Users of Paper and Cartons. Research Institutions. Packaging Development centers.