Measuring and testing – Hardness – By penetrator or indentor
Patent
1991-09-16
1994-02-01
Noland, Tom
Measuring and testing
Hardness
By penetrator or indentor
73 79, 162198, G01N 348, G01N 352
Patent
active
052823822
ABSTRACT:
An apparatus and process is provided for testing the hardness of paper rolls. The apparatus includes a tester that is selectively moveable across a roll of paper. The tester includes an impact anvil which strikes the paper at a selected frequency and which determines the hardness of the paper roll based on forces encountered by the impact anvil. The tester further includes an encoder wheel for identifying relative positions on the paper roll at which each test is performed. The impact anvil and the encoder wheel are operatively connected to a computer which receives signals and calculates hardness at each of the plurality of positions tested. The computer provides output of data on the most recent traversal of a paper roll and on plural sequentially tested rolls to assess trends in the hardness of paper rolls produced by a particular machine.
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Brandl Gregory P.
Fiore Leonard F.
Voit Allen R.
Champion International Corporation
Noland Tom
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