BS ISO 20942:2019 pdf download.Leather – Full chrome upper leather – Specification and test methods.
Leather is widely used in the footwear industry. Although different tanning agents can be used to produce leather, chromium Ill is still the most important agent in the tanning of leather for footwear. BS ISO 20942 specifies requirements for various types of full chrome upper leather which are used in the footwear industry.
BS ISO 20942 specifies requirements, methods of test and methods of sampling for full chrome upper leather. BS ISO 20942 is applicable to upper leather which is used in general purpose sports footwear, school footwear, casual footwear, men’s town footwear, women’s town footwear, cold weather footwear, fashion footwear, infants’ footwear and indoor footwear.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2418. Leather — Chemical, physical and mechanical and fastness tests — Sampling location ISO 2588, Leather — Sampling — Number of items for a gross sample
ISO 3376, Leather — Physical and mechanical tests — Determination of tensile strength and percentage extension
ISO 3377-2, Leather — Physical and mechanical tests — Determination of tear load — Part 2:
Double edge tear
ISO 116412, Leather — Tests for colourfastness — Colourfastness to cycles of to-and-fro rubbing
ISO fl642, Leather — Tests for colourfastness — Colourfastness to water
1S.Oi4Z& Leather — Physical tmcl mechanical tests — Determination of water vapour permeability ISO__1707O Leather — Chemical tests — Determination of tetrachioro phenol-, trichioro phenol-, dichloro phenol-, m on och loroph enol-Isomers and pen tachioro phenol content
ISO 17075-i. Leather — Chemical determination of chromium( VI) content in leather — Part 1:
Colorimetric method
iSO 17075-2. Leather — Chemical determination of chromium(Vl) content in leather — Part 2:
Chromatographic method
ISO 172264. Leather — Chemical determination of formaldehyde content — Part 1: Method using high perfor,n once liquid chromatography
ISO 17229, Leather — Physical and mechanical tests — Determination of water vapour absorption
4.1 Physical characteristics
The full chrome upper leather shall meet the physical characteristics given in Table_1.BS-ISO-20942-2019