GB/T 22890-2008 in English

《GB/T 22890-2008皮革 物理和机械试验 柔软皮革防水性能的测定》由TC252（全国皮革工业标准化技术委员会）归口，主管部门为中国轻工业联合会。
本标准规定了皮革动态防水性能的测定方法。
本标准适用于鞋面革等各种类型的柔性皮革。

1 Scope

This standard specifies a method for determining the dynamic water resistance of leather.

This standard is applicable to all flexible leathers such as leathers intended for footwear uppers.

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.

GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods (GB/T 6682 - 2008, ISO 3696:1987, MOD)
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 test piece is formed into the shape of a trough and flexed whilst partially immersed in water. The time taken for water to penetrate through the test piece is measured. The method also allows the percentage mass of water absorbed and the mass of water transmitted through the test piece to be determined.

Foreword i
1 Scope
2 Normative References
3 Principle
4 Apparatus
5 Sampling and Sample Preparation
6 Procedure
7 Expression of Result
8 Test Report