GB/T 7568.3-2008Textiles -- Tests for colour fastness -- Standard adjacent fabrics -- Part 3: Polyamide (English PDF)

Foreword

GB/T 7568 is divided into 7 parts:

- Part 1: Wool;

- Part 2: Cotton and viscose;

- Part 3: Polyamide;

- Part 4: Polyester;

- Part 5: Acrylic fabric;

- Part 6: Silk fabric;

- Part 7: Multi-fiber.

This part is the part 3 of GB/T 7768.

It modifies and uses the ISO 105-F03:2001 Textiles - Tests for color fastness -

Part F03: Specification for polyamide adjacent fabric (English version).

The main differences between this part and ISO 105-F03:2001 are as follows:

- REPLACE the international standards in normative references by the

national standards; ADD the GB/T 251, FZ/T 01023, FZ/T 01024;

- ADD the requirements for the performance of polyamide-stained reference

fabric;

- ADD the requirements for the number of folding layers when measuring the

whiteness;

- ADD the use of instrument grading method to evaluate the tested adjacent

fabric and reference adjacent fabric after staining;

- DELETE the foreword, notes, references of ISO 105-F03:2001.

This part replaces the GB 11403-1989 Textiles - Tests for color fastness -

Specification for standard adjacent fabric: Polyamide. As compared with GB

11403-1989, the main changes are as follows:

- CHANGE the standard name into "Textiles - Tests for color fastness -

Standard adjacent fabrics - Part 3: Polyamide";

- CHANGE it from mandatory standard into recommended standard;

Textiles - Tests for color fastness -

Standard adjacent fabrics - Part 3: Polyamide

1 Scope

This part specifies the specifications and requirements for the unstained

polyamide standard adjacent fabric suitable for use in assessing staining in

color fastness tests.

The staining characteristics of the polyester adjacent fabric to be tested shall,

together with the polyamide reference adjacent fabric, be determined by

comparing with polyamide-stained reference fabric. Both reference fabrics shall

be obtained from the prescribed supply.

2 Normative references

The provisions in following documents become the provisions of this part

through reference in this part of GB/T 7568. For the dated references, the

subsequent amendments (excluding corrections) or revisions do not apply to

this part; however, parties who reach an agreement based on this part are

encouraged to study if the latest versions of these documents are applicable.

For undated references, the latest edition of the referenced document applies.

GB 250 Textiles - Tests for color fastness - Grey scale for assessing change

in color (GB 250-2008, ISO 105-A02:1993, IDT)

GB 251 Textiles - Tests for color fastness - Grey scale for assessing staining

(GB 251-2008, ISO 105-A03:1993, IDT)

GB/T 3921-2008 Textiles - Tests for color fastness - Color fastness to

washing with soap or soap and soda (ISO 105-C10:2006, MOD)

GB/T 4669 Textiles - Woven fabrics - Determination of mass per unit length

and mass per unit area (GB/T 4669-2008, ISO 3801:1977, MOD)

GB/T 7573 Textiles - Determination of pH of the aqueous extract (GB/T 7573-

2002, ISO 3071:1980, MOD)

GB/T 8424.1 Textiles - Tests for color fastness - General principles for

measurement of surface color (GB/T 8424.1-2001, eqv ISO 105-J01:1997)

GB/T 8424.2 Textiles - Tests for color fastness - Instrumental assessment of

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