You can determine the B.F value of Paper and B.S. value of any corrugated box from this equipment. This insrument according to national and international standard....
A test piece, placed over a circular elastic diaphragm, is rigidly clamped at the periphery but free to bulge with the diaphragm. Hydraulic fluid is pumped at a constant rate, bulging the diaphragm until the test piece ruptures. The bursting strength of the test piece is the...