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TAPPI T834
- Determination of Paperboard Roll Hardness
- standard by Technical Association of the Pulp and Paper Industry, 05/01/2002
- Publisher: TAPPI
$45.00$90.00
This test method describes the procedure for use of a hardness test hammer to evaluate the hardness of rolls of paperboard. When pressed against the surface of a roll of paperboard the hammer in this device is released from a calibrated spring. The hammer is caught on the rebound from the surface. The amount of rebound is indicative of the hardness at the point of impact. A rider on the scale of the instrument indicates the maximum rebound, hence, a measure of the roll hardness.
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