4.1 This test method simulates the flexing received by upholstery leather in service, and correlation with service is believed to be good. Both the resistance of the finish to cracking and adhesion of the finish to the leather can be evaluated.

4.2 The flexing action received by the leather in this method is more severe than that given by methods for shoe upper leather. The less severe tests have little utility in the evaluation of upholstery leather finishes.

4.3 This test method is suitable, and has been useful, in research, development, and manufacturing control. It is used as a method of test for specification acceptance. Since this is a subjective test, proper correlation should be established by interlaboratory experience prior to use for specification acceptance.

1.1 This test method covers the determination of the flexibility and adhesion of a finish on upholstery leather.2 This test method does not apply to wet blue.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.