TAPPI T-489 Standard Test for Flexural Strength of Paper and Board

EUROLAB, with its state-of-the-art accredited laboratories and expert team, offers precise and rapid testing services within the scope of the TAPPI T-489 test. This testing method covers a procedure used to measure the bending resistance of paper and cardboard.

This test method is used to determine the bending moment required to deflect the free end of a 50 mm (1,97 in) wide vertically clamped specimen by 38° from the centerline when the load is applied 1,5 mm (15 in) from the specimen. Bending strength is calculated from the bending moment.

TAPPI T 566 "Bending Strength (Hardness) of Paper (Taber-Type Tester in a 0 to 10 Taber Hardness Unit Configuration)" describes a modification of the device described in this test method for measurements in the 0 to 10 Taber hardness range only, which requires a smaller test sample . The modified procedure may be recommended for papers that are low weight, highly flexible, or both.

Test results obtained using modifications of the basic Taber-type apparatus such as those described in TAPPI T 566 "Bending Strength (Hardness) of Paper (Taber-Type Testing Apparatus in a 0 to 10 Taber Hardness Unit Configuration)" have been reported to be % of those obtained using this test method Since there are 40 different variations, such variations should not be used when this test method is specified.

EUROLAB assists manufacturers with TAPPI T-489 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.