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ASTM D5650-97(2007)

ASTM D5650-97(2007)

Standard Test Method for Resistance to Bending of Paper of Low Bending Stiffness (Taber-Type Tester in 0 to 10 Taber Stiffness Unit Configuration) (Withdrawn 2010)

2010-05-01 /Withdrawn
No replacement
Significance and Use:

Bending resistance of paper relates to a number of end use applications including wrapping, printing, copy machine performance, high speed mechanical handling of documents, and other applications.


1.1 This test method covers a procedure used to measure the resistance to bending of papers which are of low grammage or high flexibility, or both, and which exhibit bending stiffness in the range from 0 to 10 Taber stiffness units.

1.2 The bending moment required to deflect the free end of a 38-mm (1.5-in.) wide vertically clamped specimen 15° from its center line when the load is applied 10 mm (0.39 in.) away from the clamp is determined. The resistance to bending is calculated from the bending moment.

1.3 The instrument used in this test method is identical to that described in Test Method D 5342, used in the modified configuration described in Section 9.

1.4 Test results obtained using the Taber-Type tester as described in this test method have been reported to be as much as 40 % different from those obtained using Test Method D 5342, and this test method shall not be used where Test Method D 5342 is specified.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

bending; flexible paper; low grammage paper; paper; resistance to bending; stiffness; Taber stiffness
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