Crush Tester

Definition : The ring crush resistance of paper and paperboard is the maximum compressive force that a test piece will sustain without being crushed, the test piece being in the form of a cylinder, standing on one end, and the force being applied to the other end under specified conditions.

Standardization : ISO 13805 , ISO 13192 , ISO 13192 , TAPPI T808 , T809 , T811 , T818 , AFNOR 23035 etc.

Device Description : The edgewise compression strength of corrugated board is a principal element in determining the dynamic compression strength of the container made from that board. Since fiberboard shipping containers are frequently subjected to loads which are resisted by compression strength, this property is an important measure of the performance characteristic of corrugated board, useful in controlling the manufacturing process and in measuring the quality of the finished product. The compact , one spindle crush tester shows the measuring value on the four line digital display . the accuracy is 1+- % in a range of 10-5000 N . the measuring values are displayed in Newton.

Test Description : the operator pushes the quick button to drive the plates to the initial position to the desired tests . the sample is placed between the pressure plates , and the start button is pressed . the upper testing plates descend with the preset speed and compresses the sample . A sudden drop in the force shows the simple break. The values are displayed and plate is returned to initial position . after having taken out the sample , the instrument is ready for another test.