QB/T 2882-2023 English PDF (QBT2882-2023)

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QB/T 2882-2023: Footwear - Test methods for uppers,linings and insocks - Colour fastness to rubbing and bleeding
QB/T 2882-2023
QB
LIGHT INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 61.060
CCS Y 78
Replacing QB/T 2882-2007
Footwear - Test methods for uppers, linings and insocks -
Color fastness to rubbing and bleeding
(ISO 17700:2019, Footwear - Test methods for upper components and insocks - Color
fastness to rubbing and bleeding, MDO)
ISSUED ON: JULY 28, 2023
IMPLEMENTED ON: FEBRUARY 01, 2024
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 7
4 Test equipment and materials ... 7
5 Sampling and environmental conditioning ... 12
6 Test method ... 13
7 Test report ... 21
Appendix A (Informative) General test conditions for Method B ... 23
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
"Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents".
This document replaces QB/T 2882-2007 "Footwear - Test methods for uppers, linings
and insocks - Color fastness to rubbing". Compared with QB/T 2882-2007, in addition
to structural adjustments and editorial changes, the main technical changes are as
follows:
a) CHANGE the scope of application of the document (see Chapter 1; Chapter 1 of
the 2007 edition);
b) ADD a new test method C, changing the original method C to method D (see 4.3,
5.3, 6.1.2, 6.2.3, 7.2);
c) CHANGE the requirements for the moving distance of the metal platform in
method A (see 4.1.1.2; 4.1.1.2 of the 2007 edition);
d) CHANGE the requirements for the felt block in method A (see 4.1.2; 4.1.2 of the
2007 edition);
e) CHANGE the requirements for preparing alkaline sweat in method A and method
B (see 4.1.6, 4.2.9; 4.1.6 and 4.2.9 of the 2007 edition);
f) CHANGE the thickness requirement of felt block in Method B (see 4.2.2; 4.2.2 of
the 2007 edition);
g) CHANGE the size requirement of multi-fiber standard lining fabric, alkaline
sweat preparing requirement, acid sweat preparing requirement in Method D (see
4.4.3, 4.4.9, 4.4.10; 4.3.3, 4.3.9, 4.3.10 of the 2007 edition);
h) ADD the water absorption requirement of wet rubbing felt block and the liquid
absorption requirement of alkaline sweat rubbing felt block in Method A [see
6.2.1.3 a) and 6.2.1.4 c)];
i) ADD the requirements for removing excessive water from felt block in the alkaline
sweat rubbing test in Method A and Method B [see 6.2.1.4 b) and 6.2.2.4 b)];
j) ADD the requirements for the control felt block of method A [see 6.2.1.6 a)];
k) CHANGE the requirements for the water absorption of the felt block in wet
rubbing test of method B, as well as the temperature requirements for the dry felt
block and the specimen [see 6.2.2.3 d), 6.2.2.3 f); 6.2.2.3 d) and 6.2.2.3 f) of the
2007 edition];
Footwear - Test methods for uppers, linings and insocks -
Color fastness to rubbing and bleeding
1 Scope
This document describes three methods for evaluating the surface color migration of
materials in dry and wet rubbing (methods A, B, C), as well as a method for determining
the possibility of color bleeding (method D).
This document is applicable to the determination of color fastness to rubbing and
bleeding uppers, linings and insoles of footwear made of various materials. Method D
is also applicable to the determination of color fastness of color bleeding of stitches and
shoelaces.
The methods are as follows:
- Method A: Square head reciprocating rubbing color fastness;
- Method B: Rotating rubbing color fastness;
- Method C: Round head reciprocating rubbing color fastness;
- Method D: Bleeding color fastness.
2 Normative references
The contents of the following documents constitute the essential clauses of this
document through normative references in the text. Among them, for dated references,
only the version corresponding to that date is applicable to this document; for undated
references, the latest version (including all amendments) is applicable to this document.
GB/T 250 Textiles - Tests for color fastness - Grey scale for assessing change in
color (GB/T 250-2008, ISO 105-A02:1993, IDT)
GB/T 251 Textiles - Tests for color fastness - Grey scale for assessing staining (GB/T
251-2008, ISO 105-A03:1993, IDT)
GB/T 6151 Textiles - Tests for color fastness - General principles of testing (GB/T
6151-2016, ISO 105-A01:2010, MOD)
GB/T 6682-2008 Water for analytical laboratory use - Specification and test
methods (GB/T 6682-2008, ISO 3696:1987, MOD)
the pH before use and adjust it as needed. If solid precipitate appears, discard the
solution.
5 Sampling and environmental conditioning
5.1 Method A
5.1.1 The rectangular specimen is required to be large enough to be firmly clamped on
the test platform (4.1.1.1). The specimen can be taken in any direction of the material.
In general, the minimum size of the specimen shall be 100 mm × 25 mm. If it is a tensile
material, it should take sample from the direction with less elasticity.
When using a test machine with a test platform width of 25 mm, the specimens are
grouped according to the number of rubbings or test conditions.
For test machines with a wider test platform, the rubbing head (4.1.1.5) can be adjusted
and installed at different positions of the platform width; wider specimens can be used
so that separate rubbing tracks can be used side by side.
5.1.2 Before the test, place the specimen in the standard environment specified in GB/T
22049 for at least 24 hours.
Note: Samples can be taken from shoe materials, molded uppers or finished shoes.
5.2 Method B
5.2.1 The specimen size shall be large enough to be firmly fixed on the test platform
(4.2.1.1). In general, the specimen shall be a 60 mm × 60 mm square, or a 60 mm
diameter circle; or a 60 mm wide strip specimen can be used for multiple tests.
For raw materials, samples are taken from a series of positions throughout the available
width and length of the sheet. For materials with a woven structure, either of these two
specimens should not have the same warp or weft.
For the upper surface, avoid sampling at seams, perforations, and other locations where
flat specimens cannot be taken.
5.2.2 Before the test, place the specimen in the standard environment specified in GB/T
22049 for at least 24 hours.
5.3 Method C
5.3.1 Two representative specimens, each with a size of not less than 140 mm × 50 mm.
One for dry rubbing and the other for wet rubbing. For tensile materials, the specimen
should be taken from the direction with less elasticity.
5.3.2 Before the test, place the specimen in the standard environment specified in GB/T