Rub Proofness Tester, measures how effectively printing ink adheres to paper or board. Conforming to BS 3110, the instrument evaluates the extent of colour transfer from printed or coated materials due to rubbing - a condition which frequently,...
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...