Leather
Leather manufacturing standards cover the chemicals and processes used to manufactured tanned leather and leather products. In addition, many specifications of the physical properties of leather are addressed in the ISO 17076 series, and others go over topics including stitch tear strength, determination of chemical content including chromium, ethoxylated alkylphenols, and abrasion resistance.
ONORM EN ISO 11644:2023
Leather - Test for adhesion of finish (ISO 11644:2022)
This document determines a procedure for determining the adhesive strength of the coverage of the leather or the adhesive resistance between two striking layers of the attribution. The process is valid for all flexible leather with a smooth surface that can be glued to a carrier without the adhesive penetrating the cover. Preliminary tests may be necessary to clarify whether these conditions are met. This test method is to be applied for covered leather with a thick coating. The procedure specified in this document is not for pigment -free articles or articles without an averted coating, such as - Nubucel leather, - Anilin leather, - fat leather, - Veloursleder, - Perforated leather.
ISO 5402-1:2022
Leather - Determination of flex resistance - Part 1: Flexometer method
This document specifies a method for determining the dry or wet flex resistance of leather and finishes applied to leather. It is applicable to all types of flexible leather below 3,0 mm in thickness.
ASTM F696-06(2019)
Standard Specification for Leather Protectors for Rubber Insulating Gloves and Mittens
1.1 This specification covers leather protector gloves and leather protector mittens to be worn over electrical workers' rubber insulating gloves and rubber insulating mittens.
1.2 It is intended that the gloves specified herein shall fit snugly and without undue wrinkles over rubber insulating gloves and rubber insulating mittens specified in Specification D120.
1.3 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.
ISO 23702-1:2018
Leather - Organic fluorine - Part 1: Determination of the non-volatile compound content by extraction method using liquid chromatography/tandem mass spectrometry detector (LC-MS/MS)
This document specifies a test method for detection and quantification of extractable neutral, ionic, long, medium and short chain perfluorinated and poly-fluorinated substances in leather and coated leather.
This document, taking into account the three-dimensional distribution of the fibres within leather, makes the evaluation of the perfluorinated and poly-fluorinated substances with respect to the mass.
Classes of regulated compounds listed in Annex A, Table A.1, include acids, telomers, sulfonates and sulphonamide alcohols. Classes of other non-regulated compounds that can be determined by this document are defined in Annex B, Table B.1.
ASTM D4705-18
Standard Test Method for Stitch Tear Strength of Leather, Double Hole
1.1 This test method is intended for use in determining the stitch tearing resistance of leather using a double hole tear. It is particularly applicable to lightweight leathers. This test method does not apply to wet blue.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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.
ISO 19071:2016
Leather - Chemical tests - Determination of chromium (VI) and the reductive potential for chromium tanning agents
ISO 19071:2016 specifies a test method for the determination of chromium (VI) content in chromium tanning agents. The results give information about the reductive potential of the chromium tanning agent.
ISO 4044:2017
Leather - Chemical tests - Preparation of chemical test samples
ISO 4044:2017 specifies how to prepare a test sample of leather for chemical analysis. The test sample can be either ground or cut into small pieces. Unless specified in this document, the method to be used depends on the size of leather sample available for testing.
ISO 18218-2:2019
Leather - Determination of ethoxylated alkylphenols - Part 2: Indirect method
This document specifies a method for determining alkylphenols (nonylphenol and octylphenol) and alkylphenol ethoxylates (nonylphenol ethoxylate and octylphenol ethoxylate) in leather and process auxiliaries. The analysis is based on high-performance liquid chromatography (HPLC) or gas chromatography-mass spectrometry (GC-MS).
The analysis of the alkylphenol ethoxylate is made by cleaving the alkylphenol ethoxylate and measuring the released alkylphenol.
NOTE ISO 18218-1 and this document use different solvents for the extraction of the ethoxylated alkylphenols from leather. Consequently, the two analytical methods are expected to give similar trends but not necessarily the same absolute result for the ethoxylated alkylphenol content in leather.
ISO 2418:2017
Leather - Chemical, physical and mechanical and fastness tests - Sampling location
ISO 2418:2017 specifies the location of a laboratory sample within a piece of leather and the method of labelling and marking the laboratory samples for future identification.
It is applicable to all types of leather derived from mammals irrespective of the tanning used.
It is not applicable to leathers derived from birds, fish, reptiles or furs.
ISO 17076-1:2020
Leather - Determination of abrasion resistance - Part 1: Taber® method
This document specifies a method of determining the abrasion resistance of leather using a Taber® apparatus.
