GB/T 12490-2014Textiles -- Tests for colour fastness -- Colour fastness to domestic and commercial laundering (English PDF)

Foreword

This Standard is drafted according to the rules specified in GB/T 1.1-2009.

This Standard replaces GB/T 12490-2007 Textiles - Tests for colour fastness - Colour

fastness to domestic and commercial laundering. Compared with GB/T 12490-2007, the

main technical changes of this Standard are as follows.

— In Chapter 2, GB/T 7568.2, GB/T 7568.3 and GB/T 7568.7 are quoted; GB/T 7565, GB

11403 and GB 11404 are replaced; and GB/T 6682, FZ/T 01023, FZ/T 01024 and ISO

105-F07 are added;

— Note in 4.1 is adjusted to be the main body;

— Modify the composition and content of AATCC standard detergent WOB in 4.4;

— In 6.6, add the stipulation of water temperature at 40 °C; delete "then wash in running

water to clean";

— In 6.10, add the optional methods of sample discoloration evaluated by instrument

AND adjacent fabric staining;

— Add 6.11;

— Add 2 items of j) and k) in Chapter 7.

Using re-drafting method, this Standard modifies and adopts ISO 105-C06.2010 Textiles -

Tests for colour fastness - Part C06. Colour fastness to domestic and commercial laundering.

Compared with ISO 105-06.2010, the main differences in this Standard are as follows.

— International standards in the normative reference document was replaced by

corresponding Chinese standards, and the reference document GB/T 13765 is added;

— Note and footnote are added in Table 1;

— Notes about AATCC and ECE in 4.4.2 and 4.4.3 are deleted;

— Add 4.13;

— Add note in 6.9;

— Add item k) in Chapter 7.

This Standard was proposed by China Textile Industry Association.

This Standard shall be under the jurisdiction of the basic norm branch of National Textile

Technical Committee for Standardization (SAC/TC 209/SC 1).

Responsible drafting organizations of this Standard. Shanghai Entry-Exit Inspection and

Textiles - Tests for colour fastness – Colour

fastness to domestic and commercial laundering

1 Scope

This Standard specifies the methods for determining the colour fastness to domestic and

commercial laundering of various kinds of normal household articles. Industrial and

hospital articles may be subjected to special laundering procedures which may be more

severe in some aspects.

The colour loss and staining resulting from desorption and/or abrasive action in one single

(S) test closely approximates to one commercial or domestic laundering. The results of

one multiple (M) test may in some cases be approximated by the results of up to five

domestic or commercial launderings at temperatures not exceeding 70 °C. The M tests

are more severe than the S tests because of an increase in mechanical action.

These methods of this Standard do not reflect the effect of optical brightener that is

present in commercial washing products.

These methods of this Standard are designed for the detergents and bleach systems

given. Other detergents and bleach systems may require different conditions and levels of

ingredients.

2 Normative references

The articles contained in the following documents have become part of this Document

when they are quoted herein. For the dated documents so quoted, all the modifications

(including all corrections) or revisions made thereafter shall be applicable to this

document.

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 - Grey scale for assessing staining

(GB/T 251-2008, ISO 105-A03.1993,IDT)

GB/T 6151 Textiles - Tests for colour fastness - General principle of testing (GB/T

6151-1997, eqv ISO 105-A01.1994)

GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T

6682-2008, MOD ISO 3696.1987)

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 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 7568.7 Textiles - Tests for colour fastness - Standard adjacent fabrics - Part 7.

Multifibre (GB/T 7568.7-2008, ISO 105-F10.1989 MOD)

GB/T 13765 Textiles - Tests for colour fastness - Specification for STANDARD

adjacent fabric of linen and ramie

FZ/T 01023 Instrumental assessment of the degree of staining of adjacent fabrics

FZ/T 01024 Instrumental assessment methods of the degree of discoloration

ISO 105-F07 Textiles - Tests for colour fastness - Part F07. Specification for

secondary acetate adjacent fabric

3 Principle

A specimen of the textile in contact with specified adjacent fabric or fabrics is laundered,

rinsed and dried. Specimens are laundered under appropriate conditions of temperature,

alkalinity, bleaching and abrasive action such that the result is obtained in a conveniently

short time. The abrasive action is accomplished by the use of a low liquor ratio and an

appropriate number of steel balls. The change in colour of the specimen and the staining

of the adjacent fabric or fabrics are assessed by comparison with the grey scales or

instrumentally.

4 Apparatus, materials and reagents

7 Test report

The test report shall include the following information.

a) a reference to this Standard;

b) all details necessary for complete identification of the sample tested;

c) the instrumental and/or numerical grey scale rating for the change in colour of the

specimen;

d) if single-fibre adjacent fabrics were used, the instrumental and/or numerical grey

scale rating for staining of each kind of adjacent fabric used;

e) if a multifibre adjacent fabric was used, the type of multifibre adjacent fabric used

and the instrumental and/or numerical grey scale rating for staining of each type of

fibre in the multifibre adjacent fabric;

f) the number of the method of test used (as listed in Table 4);

g) whether steel balls were used in some of the A or B tests;

h) whether souring treatment in acetic acid reagent as described in 6.7 was

conducted;

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