This standard specifies the test method for the color fastness to rubbing of various textiles, including textile carpets and other velvet fabrics. This standard is applicable to various textile carpets, fabrics and yarns. GB/T 3920-1997 Textiles - Test for color fastness - Color fastness to rubbing GB/T3920-1997 Standard download decompression password: www.bzxz.net

GB/T3920—1997
This standard is based on GB3920—83 in accordance with ISO105-X12:1993 and GB/T1.1—1993. It is equivalent to the international standard in terms of technical content and slightly modified in editing. Compared with GB3920~-83, this standard is unified with the international standard in terms of title, adds the provisions of special friction head for velvet fabrics, laboratory water, and liquid squeezing device, and cancels the provision that the friction cloth and the warp and weft directions of the sample are at a 45\ angle. This standard replaces GB3920--83 from the date of entry into force. This standard is proposed by the China National Textile and Apparel Council.
This standard is under the jurisdiction of the Standardization Research Institute of the China National Textile and Apparel Council. This standard was drafted by the Jiangsu Provincial Technical Supervision Textile Dye Auxiliary Product Quality Inspection Station. The main drafters of this standard are Wang Junlan and Yang Qifen. This standard was first issued in November 1983. This standard is entrusted to the Jiangsu Provincial Technical Supervision Textile Dye Auxiliary Product Quality Inspection Station for interpretation. 37
GB/T3920—1997
ISOForeword
ISO (International Organization for Standardization) is an international federation of national standards organizations (ISO members). The preparation of international standards is usually done by ISO technical committees. Members have the right to participate in the committees for which they are interested. Official and unofficial international organizations, in contact with ISO, may also participate in the work. ISO maintains close links with the International Electrotechnical Commission (IEC) in all matters of electrotechnical standardization.
Draft international standards adopted by technical committees are circulated to members for voting, and those that receive more than 75% approval are published as international standards. International Standard ISO105-X12 was developed by ISO/TC38/SC1 Technical Committee on Textiles, Subcommittee on Testing of Colored Textiles and Dyes. This fourth edition is a technical revision of the third edition, canceling and replacing the third edition (ISO105-X12:1987). ISO105 has currently published 13 "parts", each represented by a letter (such as "Part A"), with publication dates ranging from 1978 to 1985. Each part consists of a series of "articles". Each article belongs to the corresponding part and is indicated by a two-digit series number (such as "A01\article". These articles are now published as separate documents, and their original "parts" and letter headers remain unchanged. The directory of these parts is given in ISO105-A01.
1 Scope
National Standard of the People's Republic of China
Textiles
Colour fastness test
Colour fastness to rubbing
Textiles--Tests for colour fastnessColour
fastness to rubbingwww.bzxz.net
GB/T3920-1997
eqy IS0 105-x12:1993
Replaces GB3920~-83
1.1 This standard specifies the test methods for colour fastness to rubbing of various textiles, including textile carpets and other velvet fabrics. 1.2 This standard is applicable to various textile carpets, fabrics and yarns. 1.3 Each sample shall be tested twice. One with a dry rubbing cloth and one with a wet rubbing cloth. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB251-1995 Grey scale for assessing staining (idt ISO105-A03:1993) GB/T6151--1997 Textiles - Tests for colour fastness - General test rules (eq ISO105-A01:1994) GB7565-87 Textiles - Tests for colour fastness - Cotton and viscose standard fabrics (neq ISO105-F02:1985) 3 Principle
The sample is rubbed with a dry rubbing cloth and a wet rubbing cloth respectively. Two different sizes of rubbing heads are used for velvet fabrics and other textiles. The staining of the rubbing cloth is assessed with a grey scale. 4 Equipment and Materials
4.1 Friction fastness tester: The equipment has two different sizes of friction heads, the vertical pressure of the friction head is 9N, the linear reciprocating stroke is 100mm, the reciprocating speed is 60 times/min,
4.1.1 For velvet fabrics (including textile carpets), the friction head has a rectangular friction surface with a size of 19mm×25mm. 4.1.2 For other various textiles
Friction head with a circular friction surface with a diameter of 16mm. 4.2 Cotton cloth for friction, in accordance with the provisions of GB7565, is desized, bleached, and does not contain any finishing agent. It is cut into a square of 50mmX50mm for the circular friction head, or cut into a rectangle of 25mm×100mm for the rectangular friction head. 4.3 A drip net with a stainless steel wire diameter of 1mm and a mesh width of about 20mm, or an adjustable squeezing device. 4.4 The grey scale for assessing staining shall comply with GB251. 4.5 Grade 3 water (see 8.1 in GB/T 6151-1997). 5 Preparation of test samples
5.1 If the textile to be tested is a fabric or carpet, two groups of samples not less than 50mm×200mm must be prepared. Two pieces in each group. One group has its length parallel to the warp yarn for dry and wet rubbing in the warp direction; the other group has its length parallel to the weft yarn for dry and wet rubbing in the weft direction. When testing textiles with multiple colors, the position of the sample should be carefully selected so that all colors can be rubbed. If the area of ​​each color is large enough, all samples must be taken. 5.2 If the textile to be tested is yarn, weave it into a fabric and ensure that the size of the sample is not less than 50 mm × 200 mm. Or wind the yarn parallel to a cardboard with the same size as the sample. 6 Operating procedures
6.1 Fix the test sample to the bottom plate of the testing machine with a clamping device so that the length direction of the sample is consistent with the direction of the instrument's stroke. 6.2 Dry friction: Fix the friction cloth (4.2) on the friction head of the testing machine (4.1) so that the warp direction of the friction cloth is consistent with the running direction of the friction head. In the length direction of the dry friction sample, rub 10 times within 10 seconds, with a reciprocating stroke of 100 mm and a vertical pressure of 9 N. 6.3 Wet friction: Replace the sample and repeat the operation described in 6.2 with a wet friction cloth. The wet friction cloth must be soaked with grade 3 water (4.5) and placed on a drip net (4.3) or using a squeeze device (4.3) to make its water content between 95% and 105%. After the friction is completed, dry it at room temperature. 6.4 Remove the sample fibers from the friction cloth.
6.5 Use the grey scale (4.4) to evaluate the staining degree of the friction cloth. 7 Test report
The test report should include the following:
a) The number of this standard, i.e.: GB/T3920-1997; b) Detailed specifications of the sample;
c) The staining degree of the product in the dry and wet friction in the warp and weft directions. 40
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.