QB/T 2464.23-1999 PDF English
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Determination Method for Color Fastness of Leather to Perspiration
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QB/T 2464.23-1999: PDF in English (QBT 2464.23-1999) QB/T 2464.23-99
LIGHT INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
Classification No.: Y 45
Record No.: 4248-1999
eqv ISO 11641:1993
Leather - Tests for Color Fastness -
Color Fastness to Perspiration
ISSUED ON: OCTOBER 14, 1999
IMPLEMENTED ON: MARCH 1, 2000
Issued by: China Light Industry Bureau
Table of Contents
Foreword ... 3
ISO Foreword ... 4
1 Scope ... 5
2 Normative References ... 5
3 Principle ... 5
4 Apparatus and Materials ... 6
5 Sample ... 7
6 Test Procedures ... 7
7 Test Report ... 8
Foreword
This Standard equivalently adopts international standard ISO 11641:1993 Leather -
Tests for Color Fastness - Color Fastness to Perspiration.
This Method adopts artificial perspiration solution to simulate the action of human
perspiration for tests. During the tests, the color of leather might change; the adjacent
fabrics might be stained.
Generally speaking, freshly produced human perspiration is weakly acidic, then,
microorganisms would trigger it to change; pH is usually weakly alkaline (pH 7.5 ~ 8.5).
Alkaline perspiration has a greater effect on the color of leather than acid perspiration.
Therefore, alkaline perspiration is usually used, instead of acid perspiration, to
simulate the most common conditions in practice.
Since the perspiration of different people varies, it is impossible to design a generally
effective method. However, the result of artificial alkaline perspiration test stipulated in
this Standard is consistent with most natural perspirations.
In the international standard ISO 11641:1993, Appendix A recommends commercial
sources for apparatus and materials used in the test method in this Standard; Appendix
B states the title and serial No. of IUF international standards that are related with this
Standard, and they are not quoted in this Standard.
This Standard was proposed by Industry Management Division of China Light Industry
Bureau.
This Standard shall be under the jurisdiction of National Technical Committee on
Leather of Standardization Administration of China.
The responsible drafting organization of this Standard: China Leather Industry
Research Institute.
The main drafters of this Standard: Zhao Liguo, Weng Yizhao, Liying.
Leather - Tests for Color Fastness -
Color Fastness to Perspiration
1 Scope
This Standard stipulates the determination method for leather’s color fastness to
perspiration.
This Standard is applicable to all leather in various processing stages, especially
clothing, gloving and lining leathers. Meanwhile, it is also applicable to leather for the
uppers of unlined shoes.
2 Normative References
Through the reference in this Standard, the clauses contained in the following
standards become clauses of this Standard. When this Standard is published, all the
indicated versions are valid. Since all the standards might be amended, all parties
adopting this Standard shall probe into the possibility of using the latest version of the
following standards.
GB 250-1995 Gray Scale for Assessing Changing in Color;
GB 251-1995 Gray Scale for Assessing Staining;
GB/T 6682-92 Water for Analytical Laboratory Use - Specification and Test
Methods;
GB 11404-89 Textiles - Tests for Color Fastness - Specification for Standard
Adjacent Fabrics: Multifiber;
*QB/T 3812.2-99 Leather - Conditioning of Test Pieces for Physical Tests
NOTE: “*” signifies: see GB 4689.2-84 for the content of the standard.
3 Principle
Respectively soak leather sample and adjacent fabrics in artificial perspiration solution.
Then, closely cling the sample to the adjacent fabrics to make a composite sample;
place it in a suitable apparatus. Maintain it at a certain temperature and pressure;
reserve it for a specified time. Then, dry the leather sample and the adjacent fabrics.
Use standard gray scale to assess the degree of color change of the leather sample
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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