GB/T 21294-2024 English PDF (GBT21294-2024)

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GB/T 21294-2024: Testing methods of physical and chemical performance of garments
GB/T 21294-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 61.020
CCS Y 75
Replacing GB/T 21294-2014
Testing Methods of Physical and Chemical Performance of
Garments
ISSUED ON: MARCH 15, 2024
IMPLEMENTED ON: OCTOBER 1, 2024
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative References ... 6
3 Terms and Definitions ... 11
4 Determination of Basic Properties ... 11
5 Determination of Functional Performance ... 20
6 Determination of Safety Performance ... 22
Testing Methods of Physical and Chemical Performance of
Garments
1 Scope
This document describes the test methods for physical and chemical performance of garments.
This document is applicable to the inspection of physical and chemical performance technical
indicators of garment products produced with textile woven fabrics as the main fabric.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change in Color
GB/T 251 Textiles - Tests for Color Fastness - Grey Scale for Assessing Staining
GB/T 2910 (all parts) Textiles - Quantitative Chemical Analysis
GB/T 2912.1 Textiles - Determination of Formaldehyde - Part 1: Free and Hydrolyzed
Formaldehyde (water extraction method)
GB/T 3917.1 Textiles - Tear Properties of Fabrics - Part 1: Determination of Tear Force Using
Ballistic Pendulum Method (Elmendorf)
GB/T 3917.2 Textiles - Tear Properties of Fabrics - Part 2: Determination of Tear Force of
Trouser-shaped Test Specimens (single tear method)
GB/T 3920 Textiles - Tests for Color Fastness - Color Fastness to Rubbing
GB/T 3921-2008 Textiles - Tests for Color Fastness - Color Fastness to Washing with Soap or
Soap and Soda
GB/T 3922 Textiles - Tests for Color Fastness - Color Fastness to Perspiration
GB/T 3923.1 Textiles - Tensile Properties of Fabrics - Part 1: Determination of Maximum Force
and Elongation at Maximum Force Using the Strip Method
GB/T 3923.2 Textiles - Tensile Properties of Fabrics - Part 2: Determination of Maximum Force
Using the Grab Method
Non-volatile Compounds by Extraction Method Using Liquid Chromatography
3 Terms and Definitions
The terms and definitions defined in GB/T 21295 are applicable to this document.
4 Determination of Basic Properties
4.1 Fiber Composition and Content
The fiber composition and content of the raw materials used in finished products shall be tested
in accordance with the methods described in FZ/T 01057 (all parts), GB/T 40271, GB/T 2910
(all parts), GB/T 16988, FZ/T 30003, FZ/T 01101 and FZ/T 01144, etc.
4.2 Color Fastness
4.2.1 Color fastness to washing with soap
The color fastness of finished products to washing with soap shall be tested in accordance with
the methods described in GB/T 3921-2008, and Method A (1) shall be adopted.
4.2.2 Color fastness to drycleaning
The color fastness of finished products to drycleaning shall be tested in accordance with the
method described in GB/T 5711.
4.2.3 Color fastness to rubbing
The color fastness of finished products to rubbing shall be tested in accordance with the method
described in GB/T 3920.
4.2.4 Color fastness to perspiration
The color fastness of finished products to perspiration shall be tested in accordance with the
method described in GB/T 3922.
4.2.5 Color fastness to saliva
The color fastness of finished products to saliva shall be tested in accordance with the method
described in GB/T 18886.
4.2.6 Color fastness to water
The color fastness of finished products to water shall be tested in accordance with the method
described in GB/T 5713.
4.2.7 Color fastness to light
The color fastness of finished products to light shall be tested in accordance with the method
described in GB/T 8427-2019, in which, the normal conditions shall be used for sun exposure,
and the sun exposure shall be carried out to the first stage in accordance with Method 3.
4.2.8 Color fastness to hot pressing
The color fastness of finished products to hot pressing shall be tested in accordance with the
method described in GB/T 6152, and the tidal pressure method shall be adopted. When users
have special requirements for the products, the demand-side and the supply-side may separately
negotiate.
4.2.9 Color fastness to storage
The color fastness of finished products to storage shall be tested in accordance with the method
described in GB/T 32008-2015, and the test conditions 2 shall be adopted.
4.2.10 Color fastness to transfer in joints
The color fastness of finished products to transfer in joints shall be tested in accordance with
the method described in GB/T 31127-2014, and Method A shall be adopted.
4.2.11 Color fastness to lotion staining
In accordance with the method described in Method A (1) of GB/T 3921-2008, prepare and
wash the specimen. Then, pour the residual washing liquid filtered to remove impurities into a
colorimetric tube (with a diameter of 25 mm). Use the soap solution that has not been washed
and has the same temperature as the test as a reference sample. Under the D65 standard light
source, use non-fluorescent white cardboard as the background to assess the staining degree of
the lotion in accordance with GB/T 251. During the rating, the white cardboard shall be close
to the colorimetric tube or single-row colorimetric tube rack, and the rating shall be completed
within 15 minutes after washing is completed.
4.2.12 Color fastness to light of textiles wetted with artificial perspiration
The color fastness to light of textiles wetted with artificial perspiration shall be tested in
accordance with the method described in GB/T 14576.
4.2.13 Color fastness to phenolic yellowing
The color fastness of finished products to phenolic yellowing shall be tested in accordance with
the method described in GB/T 29778.
4.2.14 Color fastness to light yellowing
The color fastness of finished products to light yellowing shall be tested in accordance with the
method described in GB/T 30669-2014, and the irradiation time is 12 hours.
4.2.15 Color fastness to ozone
shall be recorded in the test report.
4.3.2.2 Test method
Adjust the spacing between the 2 clamps of the tensile machine to 100 mm  1 mm, the clamp
width to at least 60 mm, and the clamp operating speed to 100 mm/min  1 mm/min. Then,
respectively clamp both ends of the specimen into the clamps of the tensile machine, with the
stitch line located 1/2 between the vertical lines of the 2 jaws (the pre-tension is 2 N). Start the
test program, until the stich line breaks.
Record the test value of each specimen. Take the arithmetic mean of the test values of 3
specimens as the final result. The calculation result shall be rounded off to 1 N in accordance
with GB/T 8170.
If 2 or more specimens in the test values of 3 specimens are qualified, take the average value
of the qualified specimens as the final result of the test part and the test part will be determined
as qualified in the indicator; if 2 or more specimens...