ISO 48-7 Rubber - Vulcanized or Thermoplastic - Determination of Hardness - Part 7: Apparent Hardness of Rubber Lined Rollers by Shore Type Durometer Method

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 48-7 testing. This standard specifies a method for determining the apparent hardness of vulcanized or thermoplastic-rubber roller coatings, expressed as Shore hardness, for measurements where only moderate accuracy is required.

The method and apparatus used are essentially those described in ISO 48-4; in this case, measurements are made on the curved surface of the conditioned rubber-coated roller rather than a flat test piece. Shore type A and type D instruments are specified, the latter being used for measurements on high hardness rollers.

The hardness of a roll coating is traditionally determined on the finished roll because it is this hardness that is critical for correct operation of the roll in its final application. Therefore, the term "apparent hardness" is used to distinguish between the values ​​obtained by the methods described in the various sections of this standard and the values ​​that would be obtained for rubber if it were possible to use standard test methods for the standard test.

It has not been possible to standardize on a single test method, given the fact that rollers vary significantly in size, construction and end use, and hardness determinations are made for different purposes such as specification and factory process control.

EUROLAB assists manufacturers with ISO 48-7 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.