1 Scope
This standard of GB/T 7568 specifies the general requirements for evaluating uncolored multifibre accompanying fabric among the stained in tests for textile colour fastness.
2 Normative References
The following documents contain provisions which, through reference in GB/T 7568, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigenda), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.
GB/T 250 Textiles—Tests for colour fastness—Grey scale for assessing change in colour (GB/T 250—2008, ISO 105-A02: 1993, IDT)
GB/T 251 Textiles—Tests for colour fastness—Gray scale for assessing staining (GB/T 251—2008, ISO 105-A03: 1993, IDT)
GB/T 3921—2008 Textiles—Tests for colour fastness—Colour fastness to soaping (GB/T 3921—2008, ISO 105-C10: 2006, MOD)
GB/T 7568.1 Textiles--Tests for colour fastness--Specification for wool adjacent fabric (GB/T 7568.1—2002, ISO 105-F01: 2001, MOD)
GB/T 7568.2—2008 Textiles—Tests for colour fastness—Standard adjacent fabrics Part 2: Cotton and viscose
GB/T 7568.3 Textiles—Tests for colour fastness—Standard adjacent fabrics Part 3: Polyamide (GB/T 7568.3—2008, ISO 105-F03: 2001, MOD)
GB/T 7568.4 Textiles--Tests for colour fastness--Specification for polyester adjacent fabric (GB/T 7568.4—2002, ISO 105-F04: 2001, MOD)
GB/T 7568.5 Textiles--Tests for colour fastness--Specification for acrylic adjacent fabric (GB/T 7568.5—2002, ISO 105-F05: 2001, MOD)
GB/T 7568.6 Textiles--Tests for colour fastness--Specification for silk adjacent fabric (GB/T 7568.6—2002, ISO 105-F06: 2000, MOD)
GB/T 8424. 2 Textiles--Tests for colour fastness--Instrumental assessment of relative whiteness (GB/T 8424. 2—2001, eqv ISO 105-J02: 1997)
FZ/T 01023 Instrumental assessment of the degree of staining of adjacent fabrics (FZ/T 01023—1993, neq ISO 105-A04: 1989)
FZ/T 01024 Instrumental assessment of the discoloration degree of sample (FZ/T 01024—1993, neq ISO 105-A05: 1992)
3 General Requirements
3.1 Each component of fiber composing multifibre accompanying fabric shall possess similar staining performance with the fiber of single fibre adjacent fabric specified in corresponding part of GB/T 7568. The staining performance of multifibre accompanying fabric shall be determined by methods in Annex A.
3.2 The description of two types of multifibre accompanying fabric is listed in Table1.
Wool and acetate fibre shall not be used for some tests for colour fastness. In this case, the DW type multifibre accompanying fabric may be replaced by TV type.
