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GB/T 12490-2014 PDF in English


GB/T 12490-2014 (GB/T12490-2014, GBT 12490-2014, GBT12490-2014)
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GB/T 12490-2014: PDF in English (GBT 12490-2014)

GB/T 12490–2014
GB
ICS 59.080.01
W 04
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing GB/T 12490-2007
Textiles - Tests for colour fastness - Colour fastness to
domestic and commercial laundering
(ISO 105-C06.2010, Textiles - Tests for colour fastness - Part C06. Colour
fastness to domestic and commercial laundering, MOD)
ISSUED ON. SEPTEMBER 03, 2014
IMPLEMENTED ON. MARCH 01, 2015
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1  Scope ... 5 
2  Normative references ... 5 
3  Principle ... 6 
4  Apparatus, materials and reagents ... 6 
5  Test specimen ... 10 
6  Test procedures ... 10 
7  Test report ... 12 
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 
4.1 Suitable mechanical device. It consists of a water bath containing a rotatable shaft
which supports, radially, stainless steel containers – the diameter is (75 ± 5) mm; the
height is (125 ± 10) mm; the capacity is (550 ± 50) ml; the bottom of the containers is (45 ±
10) mm from the centre of the shaft. The shaft/container assembly is rotated at a
frequency of (40 ± 2) r/min. The temperature of the water bath is thermostatically
controlled to maintain the test solution at the prescribed temperature ±2 °C.
6.6 For all tests, remove the composite specimen at the end of the wash and rinse twice
for 1 min in two separate 100 ml portions of water (4.8) at 40 °C.
6.7 In certain cases where the practice is to sour at the end of the washing operation,
the following optional operation may be conducted.
Treat each composite specimen in a 100 ml portion of acetic acid reagent (4.12) for 1 min
at 30 °C. Then, rinse each composite specimen in a 100 ml portion of water (4.8) for 1 min
at 30 °C.
6.8 For all methods, extract the excess water from the composite specimen.
6.9 For all methods, dry the specimen by hanging it in air at a temperature not exceeding
60°C, with the parts in contact only at the line of stitching.
NOTE. In case of uneven colour bleeding along interlining stitching line, take resample for test, tear off
the sample and the stitch, and dry them separately in the air.
6.10 Assess the change in colour of the specimen and the staining of the adjacent fabric
using the grey scales (4.9 and 4.10) or instrumentally.
6.11 If testing is performed at temperatures other than those listed in the method, it must
first be agreed upon between the interested parties and detailed in the report.
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;
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.