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Significance and Use
5.1 This test method is designed to determine the cracking resistance of the grain or finish surface of leather on a pass/fail basis. This test method attempts to replicate the conditions that may be encountered by leather that is bent around a buckle frame or other anchoring device, folded over in seams or welts, and so forth. The cracking resistance of leather is influenced by many factors such as quantity, location, and type of fatliquoring materials; moisture content; thickness; the presence of defects or scar tissue, or both; the presence of processing damages to the skin or hide tissue; finish system formulation, and so forth. This test method is useful for manufacturing control in the tannery, specification acceptance, and quality control in the end product manufacturing plant.
1.1 This test method covers the determination of the resistance of leather to cracking when the leather is bent or folded with the grain (or finish) surface on the outside of the bend. Heavy leathers (for example, harness, belt, strap, bag, case, and so forth) are usually bent around a mandrel using either mechanical resistance (for example, clamp, vise, and so forth) or by hand. Lighter leathers (for example, shoe upper, upholstery, garment, glove, and so forth) are usually given a sharp double-fold (crosswise) bend after cooling to a low temperature. This test method does not apply to wet blue.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1517 Terminology Relating to Leather
D1610 Practice for Conditioning Leather and Leather Products for Testing
D1813 Test Method for Measuring Thickness of Leather Test Specimens
ICS Number Code 59.140.30 (Leather and furs)
UNSPSC Code 11162300(Leathers)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D6075-13, Standard Test Method for Cracking Resistance of Leather, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top