Test apparatus and method of measuring mar resistance of film or coating
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United States of America Patent
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Feb 18, 2003
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N/A
app pub date -
Aug 3, 2000
filing date -
Mar 11, 1998
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Abstract
This invention concerns a test apparatus and procedure used for quantitative and qualitative characterization of scratch and mar behavior of films or coatings, more particularly automotive coatings. The apparatus includes a micro-indentor that penetrates and scratches the coating to be characterized together with interrelated components for measuring the force applied, the length and depth of the indentor penetration, the geometry of the disturbed coating surface as well as a system for measuring, analyzing and comparing test results.
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