1 Scope
This standard specifies a method for determining the thickness of surface coating.
It is applicable to all types of leather with coating.
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 (excluding corrections), or revisions, of any of these publications do not apply to this standard. 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.
QB/T 2706 Leather - Chemical physical and mechanical and fastness tests - Sampling location (QB/T 2706-2005, ISO 2418: 2002,MOD)
QB/T 2707 Leather - Physical and mechanical tests - Sample preparation and conditioning (QB/T 2707-2005, ISO 2419: 2002, MOD)
3 Principle
A section of leather is taken perpendicular to the coated surface. The thickness of the surface coating is measured using a microscope and expressed both as a thickness and as a percentage to the total thickness.
4 Apparatus
Foreword i
1 Scope
2 Normative references
3 Principle
4 Apparatus
5 Sampling and sample preparation
6 Procedure
7 Expression of results
8 Test report
Annex A (Informative) Comparison of the clauses of this standard and ISO 17186: 2002
Annex B (Informative) Main technical differences between this standard and ISO 17186: 2002 and the relevant reasons
1 Scope
This standard specifies a method for determining the thickness of surface coating.
It is applicable to all types of leather with coating.
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 (excluding corrections), or revisions, of any of these publications do not apply to this standard. 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.
QB/T 2706 Leather - Chemical physical and mechanical and fastness tests - Sampling location (QB/T 2706-2005, ISO 2418: 2002,MOD)
QB/T 2707 Leather - Physical and mechanical tests - Sample preparation and conditioning (QB/T 2707-2005, ISO 2419: 2002, MOD)
3 Principle
A section of leather is taken perpendicular to the coated surface. The thickness of the surface coating is measured using a microscope and expressed both as a thickness and as a percentage to the total thickness.
4 Apparatus
Contents of GB/T 22889-2008
Foreword i
1 Scope
2 Normative references
3 Principle
4 Apparatus
5 Sampling and sample preparation
6 Procedure
7 Expression of results
8 Test report
Annex A (Informative) Comparison of the clauses of this standard and ISO 17186: 2002
Annex B (Informative) Main technical differences between this standard and ISO 17186: 2002 and the relevant reasons
