Edge crush tester is widely used product in industries where corrugated fibre boards are manufactured and used. They are widely used in making if cartons and thus considered as secondary packaging. Secondary packaging is responsible for keeping the contents packed safe during transit, handling and storage. Crush test is very important to assess the properties of the raw material. With one machine, different properties of the CFB can be assessed, ring crush test, edge crush test and flat crush test. All tests are basically being performed on the corrugators of the board. A CFB has corrugators packed between two linear boards. The height and density of corrugators determine the different properties.
To perform the test, a sample is prepared with the predefined dimensions. To perform the flat crush test, the sample is placed flat while ridges and furrows facing up. A top load is applied on the sample until deformity occurs. In ring crush test, a horizontal strip of sample is prepared and its edges are joined to form a ring. This ring is placed on the platform and a top load is applied until deformity occurs. In edge crush test, a top load is applied on the sample while the corrugators standing tall. All these tests are performed with one machine by just changing the fixture of the machine.