This standard specifies the method for the determination of the folding fastness of dry or wet leather and leather coatings. This standard applies to the determination of the folding fastness of various types of leather with a thickness less than 3.0 mm.
GB/T 39368-2020 Referenced Document
GB/T 39364 Leather—Chemical, physical, mechanical and fastness tests—Sampling location
GB/T 39364-2020 Leather—Chemical, physical, mechanical and fastness tests—Sampling location
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 6682-2008 Water for analytical laboratory use.Specification and test methods
ISO 2419:2012 Leather - Physical and mechanical tests - Sample preparation and conditioning
QB/T 2707 Leather-Physical and mechanical tests - Sample preparation and conditioning
QB/T 2707-2018 Leather-Physical and mechanical tests - Sample preparation and conditioning
GB/T 39368-2020 history
2020GB/T 39368-2020 Leather—Physical and mechanical tests—Determination of flex resistance:Vamp flex method