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GB/T 18886-2002 English PDF (GBT18886-2002)

GB/T 18886-2002 English PDF (GBT18886-2002)

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GB/T 18886-2002: Textiles -- Tests for fastness -- Colour fastness to saliva

This Standard specifies a test method for colour fastness to saliva of textile. This Standard is applicable to various type of textiles.
GB/T 18886-2002
GB
ICS 59. 080. 01
W 04
NATIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
Textiles - Tests for Fastness ?€?
Colour Fastness to Saliva
ISSUED ON. NOVEMBER 22, 2002
IMPLEMENTED ON. MARCH 1, 2003
Jointly Issued by. General Administration of Quality Supervision,
Inspection and Quarantine (AQSIQ);
Standardization Administration (SAC) of the People's
Republic of China.
Table of Contents
FOREWORD ... 3
1 SCOPE ... 4
2 NORMATIVE REFERENCES ... 4
3 PRINCIPLES ... 4
4 REAGENTS AND MATERIALS ... 5
5 INSTRUMENTS ... 5
6 SAMPLE PREPARATION ... 6
7 PREPARATION OF THE TEST SOLUTION ... 6
8 OPERATION PROCEDURE ... 6
9 TEST REPORT ... 7
Foreword
This Standard was proposed by China National Textile and Apparel Council. This Standard shall be under the jurisdiction of the National Textile Standardization Technical Committee.
This Standard is responsibly drafted by Standardization Institute of Textile Industry Chief drafting staffs of this Standard. Li Zhen, and Li Chun.
This Standard is issued for the first time.
Textiles - Tests for Fastness ?€?
Colour Fastness to Saliva
1 Scope
This Standard specifies a test method for colour fastness to saliva of textile. This Standard is applicable to various type of textiles.
2 Normative References
The following documents contain provisions which, through reference in this Standard, constitute provisions of this Standard. For dated reference, subsequent amendments (excluding corrections) or revisions of these publications do not be applied. However, the parties who enter into agreement according to these specifications are encouraged to research whether the latest editions of these references are applied or not. For undated references, the latest edition of the normative document is applicable to these specifications.
GB 250 Grey scale for assessing change in colour (idt ISO 105/A02)
GB 250 Grey scale for assessing staining (idt ISO 105/A03)
GB/T 3922 Textiles - Testing method for colour fastness to perspiration (eqv ISO 105/E04)
GB 7564~7568 Textiles - Tests for colour fastness - Specification for standard adjacent fabric (neq ISO 105/F)
GB 11404 Textiles - Tests for colour fastness - Specification for standard adjacent fabric. Multi-fiber (neq ISO/DIS 105/F10)
3 Principles
Adhere the specimen and the specified adjacent fabric together; remove the test solution after the treatment in artificial saliva; place it between two pieces of flat plates inside the test equipment; apply the specified pressure; then dry the specimen and adjacent fabric respectively; evaluate the discolouration of the specimen and staining of the adjacent fabric.
12.5kPa.
8.2 Put the instrument with composite-specimen in the thermo-tank. Place it for 4h at the temperature of 37??C ?? 2??C.
8.3 Remove all the sutures on the composite-specimen except one short side. Unfold the composite-specimen; and hang it at the temperature of not exceeding 60??C for drying.
8.4 Use grey scale to evaluate the discolouration of the specimen and the staining of one side of the adjacent fabric that is contacted with the specimen.
9 Test Report
Respectively make reports on the change in colour of the specimen AND the staining level of each kind of adjacent fabrics.

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