This document specifies a method for the determination of the apparent hardness of vulcanized- or thermoplastic-rubber roller covers, expressed as the Pusey and Jones indentation value.
The Pusey and Jones plastometer apparatus is used to measure the depth of indentation of an indentor under a specified force into the surface of the rubber. The indentation value should not be confused with hardness as measured by the international rubber hardness test method ISO 48, since in this method the rubber immediately adjacent to the indentor is precompressed. The Pusey and Jones indentation value is an inverse measurement of hardness, i.e. the harder the rubber the lower the Pusey and Jones indentation value.th edition 2017-08 Rubber-covered rollers — Determination of apparent hardness — Part 3: Pusey and Jones method Cylindres revêtus de caoutchouc — Détermination de la dureté apparente — Partie 3: Méthode Pusey et Jones Reference number ISO 7267-3:2017(E) ？ ISO 2017 ISO 7267-3:2017(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2017, Published in Switzerland A