Textiles - Tests for colour fastness - Method for the instrumental assessment of staining of adjacent fabrics
1 Scope
This standard specifies an instrumental method for assessing the degree of staining of adjacent fabrics in any color fastness test of textiles.
This standard is applicable to the assessment of staining in the color fastness test of various fabrics, and also applicable to other textile materials.
2 Normative references
The following referenced document is indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 3978 Standard illuminants and geometric conditions
GB/T 7568 (All parts) Textiles - Tests for colour fastness - Standard adjacent fabric
GB/T 8424.3 Textiles - Tests for colour fastness - Calculation of colour differences (GB/T 8424.3-2001, eqv ISO 105-J03:1995)
GB/T 13765 Textiles - Tests for colour fastness - Specification for standard adjacent fabric of linen and ramie
3 Principle
Determine the color of the adjacent fabrics in contact with the specimen and that not in contact with the specimen in the color fastness test, respectively. The color difference between them shall be calculated in CIE LAB units and converted into a staining-scale rating by means of a formula.
4 Apparatus
Spectrometer or colorimeter: With illumination conditions of standard illuminant D65 or standard illuminant A, capable of measuring the color on single group of fibres and single fibre (GB/T 7568.1 to GB/T 7568.6, GB/T 13765) in a multifibre adjacent fabric (see GB/T 7568.7), the illumination and observation conditions of the apparatus shall comply with the relevant requirements of GB/T 3978.
Foreword i
1 Scope
2 Normative references
3 Principle
4 Apparatus
5 Specimen
6 Operating procedures
7 Test report
