This standard specifies a method for determining the wet or dry flex resistance of leather and finishes applied to leather.
This standard is applicable to all types of leather below 3.0 mm in thickness.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 6682-1992 Water for analytical laboratory use — Specification and test methods
QB/T 2706-2005 Leather — Chemical physical and mechanical and fastness tests — Sampling location (ISO 2418:2002, MOD)
QB/T 2707-2005 Leather — Physical and mechanical tests — Sample preparation and conditioning (ISO 2419:2002, MOD)
3 Principle
A test piece is folded with the surface to be tested inwards and clamped in an upper moveable clamp and with the surface to be tested outwards in a lower fixed clamp. Movement of the upper clamp causes a fold in the test piece to run along it. The test piece is examined periodically for damage.
