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GB/T 3920-2008 (GBT3920-2008)

GB/T 3920-2008_English: PDF (GBT 3920-2008, GBT3920-2008)
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BASIC DATA
Standard ID GB/T 3920-2008 (GB/T3920-2008)
Description (Translated English) Textiles - Tests for colour fastness - Colour fastness to rubbing
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard W04
Classification of International Standard 59.080.01
Word Count Estimation 6,694
Date of Issue 2008-08-06
Date of Implementation 2009-06-01
Older Standard (superseded by this standard) GB/T 3920-1997
Quoted Standard GB/T 251; GB/T 6151; GB/T 6529; GB/T 7568.2; ISO 105-X16
Adopted Standard ISO 105-X12-2001, MOD
Drafting Organization Jiangsu Menglan Group Ltd.
Administrative Organization Textile -based branch of the National Standardization Technical Committee
Regulation (derived from) National Standard Approval Announcement 2008 No.12 (Total No.125)
Proposing organization China Textile Industry Association
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies test methods for all types of textiles stick rubbing fastness. This standard applies to all types made ??from the fiber, yarn dyed or printed, fabrics and textiles, including carpets and other textile velvet fabric. Each sample is to do two tests. Use a dry cloth rubbing, rubbing a wet cloth.

Standards related to: GB/T 3920-2008

GB/T 3920-2008
GB
ICS 59.080.01
W 04
NATIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
Replacing GB/T 3920-1997
Textiles - Tests for colour fastness –
Colour fastness to rubbing
(ISO 105-X12. 2001, MOD)
ISSUED ON. AUGUST 6, 2008
IMPLEMENTED ON. JUNE 1, 2009
Jointly issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China (AQSIQ);
Standardization Administration of China (SAC).
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Principle ... 5 
4 Apparatus and materials ... 6 
5. Test specimens ... 6 
6 Procedure ... 7 
7 Evaluation ... 8 
8 Test Report ... 8 
Foreword 
This Standard modifies and adopts ISO 105-X12.2001 Textiles - Tests for colour fastness -
Part X12. Colour fastness to rubbing.
This Standard is formulated according to ISO 105-X12. 2001. Compared with ISO 105-X12.
2001, the differences of this Standard are as follows.
1. In the normative references, the Chinese standards corresponding to international
standards are quoted. In which, GB/T 7565 replaces ISO 105-F09.
2. Note of AATCC instrument is added in 4.1.2;
3. Proposed waterproof polishing paper specification is added in 4.3 notes;
4. The specific temperature and humidity provisions of conditioning treatment are deleted. It
directly quote the provisions of GB/T 6529 in which the temperature and humidity are
the same;
5. The calibration test in 4.4 is adjusted to be content of notes;
6. For sample that has little colour area and runs together, add "Refer to the provisions of
this clause" in 6.1;
7. Add note 2 in 6.3;
8. Add clause D in Chapter 8.
This Standard replaces GB/T 3920 1997 Textiles - Tests for colour fastness - Colour fastness
to rubbing. The major differences are as follows.
1. Add GB/T 6529 and ISO 105-X16 in normative references.
2. Add the rubbing cloth dimension, round friction head dimension as well as friction head
pressure margin tolerance;
3. Change the rectangle rubbing head dimension from 19mm×25mm to 19mm× 25.4mm;
4. Change the rubbing head movement from 100mm to 104±3 mm;
5. Change the sample size from 50mm×200mm to not-less-than 50mm× 140mm;
6. Add the optional samples that is cut at certain angle to fabric’s warp direction or weft
direction;
7. Add the description of small area printing sample;
Textiles - Tests for colour fastness –
Colour fastness to rubbing
1    Scope 
This Standard specifies a test method for determining the colour fastness to rubbing of
various types.
This Standard is applicable to textiles made from all fibers in the form of yarn or fabric,
including textile floor coverings, whether dyed or printed.
Two tests may be made, one with a dry rubbing cloth and one with a wet rubbing cloth.
2    Normative references 
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this Standard. For dated references, subsequent amendments or
revisions of these publications do not apply. However, parties who enter into agreements
based on this Standard are encouraged to investigate the possibility of applying the most
recent editions of the normative documents indicated below. For undated references, the latest
edition of the normative document referred to applies.
GB/T 251 Textile Tests for Colour Fastness Gray scale for assessing staining (GB/T
251-2008, ISO 105-A03. 1993, IDT)
GB/T 6151 Textile Tests for Colour Fastness general rules (GB/T 6151-1997, eqv ISO
105-A01. 1994)
GB/T 6529 Textiles - Standard atmospheres for conditioning and testing (GB/T
6529—2008, ISO 139. 2005, MOD)
GB/T 7568.2 Textiles - Tests for colour fastness - Standard adjacent fabrics - Part
2.Cotton and viscose(GB/T 7568.2-2008, ISO/DIS 105-F02. 2008, MOD)
ISO 105-X16 Textiles - Tests for colour fastness - Part X16. Colour fastness to rubbing -
Small areas
3    Principle   
Specimens of the textile are rubbed with a dry rubbing cloth and with a wet rubbing cloth.
Weigh a conditioned piece of cloth. Thoroughly soak in distilled water. Reweigh the rubbing
cloth its moisture rate to be 95 % ~ 100 %. The follow the instructions in 6.2.
Note 1. As the level of soak of the rubbing cloth may dramatically affect ratings, other moisture rate
may be used. An example of a very commonly used moisture rate is (65 ± 5) %.
Note 2. It may use adjustable liquid removal system or other proper device to adjust the moisture
percentage of rubbing cloth.
6.4 Drying
Air dry the test cloth.
7    Evaluation 
7.1 Place 3 layers of rubbing cloth on the back of each rubbing cloth to be evaluated, while
evaluating (4.2).
7.2 Assess the staining of the cotton rubbing cloths with the grey scale for staining (4.4),
under suitable illumination (see GB/T 6151).
8    Test Report 
The test report shall contain the following information.
a) Number of this Standard i.e., GB/T 3920-2008;
b) The rubbing finger used in the test;
c) Whether it is dry or wet rubbing. If wet rubbing, indicate the moisture rate;
d) Metal net, or waterproof fine abrasive paper and its specifications;
e) The conditioning time of the specimens and rubbing cloth;
f) The long direction of the specimen, i.e., warp, weft or oblique;
g) The numerical rating for staining for each test specimen.
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