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This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 22798-2009 Test method for fiber fall off of towel product.
The following main changes have been made with respect to GB/T 22798-2009:
——the standard name is modified;
——the Clause “Principle” is added (see Clause 3);
——the types of ballasts are modified (see 5.1.1; 3.4 of Edition 2009);
——the types of standard detergents are added (see 5.1.2);
——the number of samples when the mass of a single sample is less than 100g is increased (see 7.1.1);
——the requirements of "pre-conditioning" are modified (see 7.1.2; 4.2 of Edition 2009);
—— the amount of standard detergent used in washing is added (see 8.1.2);
——"Method B - friction mass loss method” is added (see 8.2).
This standard was proposed by China National Textile and Apparel Council.
This standard is under the jurisdiction of the National Technical Committee on Household Textiles of Standardization Administration of China (SAC/TC 302).
The previous edition of this standard is as follows:
——GB/T 22798-2009.
Test method for fiber shedding of towel products
1 Scope
This standard specifies the test method for fiber shedding performance of towel products.
This standard is applicable to various towel products with textile fiber as raw materials.
2 Normative references
The following documents are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6529 Textiles - Standard atmospheres for conditioning and testing
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 8629-2017 Textiles - Domestic washing and drying procedures for textile testing
GB/T 21196.1-2007 Textiles - Determination of the abrasion resistance of fabrics by the Martindale method - Part 1: Martindale abrasion testing apparatus
GB/T 21196.4-2007 Textiles - Determination of the abrasion resistance of fabrics by the Martindale method - Part 4: Assessment of appearance change
3 Principle
3.1 Method A - washing mass loss method: re-condition the sample after conditioning, washing and drying, and determine and calculate the mass loss rate of the sample before and after washing.
3.2 Method B - friction mass loss method: abrade the sample by Martindale abrasion testing apparatus, and determine the mass loss of sample before and after abrasion after the specified number of revolutions.
4 Test conditions
Environmental conditions for conditioning and pre-conditioning shall meet the requirements of standard atmospheres specified in GB/T 6529.
5 Reagents and materials
5.1 Method A - washing mass loss method
5.1.1 Ballast: Type III (100% polyester fiber ballast) specified in GB/T 8629-2017 is adopted.
5.1.2 Detergent: standard detergent 3 (ECE standard detergent 98) specified in GB/T 8629-2017 is adopted.
5.2 Method B - friction mass loss method
5.2.1 Wool abrasive: according to GB/T 21196.1-2007, 6.1.
5.2.2 Woven wool felt: according to GB/T 21196.1-2007, 6.2.
5.2.3 Foam plastics: according to GB/T 21196.1-2007, 6.3.
6 Apparatus
6.1 Method A - washing mass loss method
6.1.1 Fully automatic washing machine, Type A standard washing machine (see GB/T 8629-2017, 5.1.1).
Note: Other apparatus that have been proved to obtain the same test results may also be used.
6.1.2 Rotary tumble dryer, which is used with Type A standard washing machine (see GB/T 8629-2017, 5.2).
Note: Other dryers that have been proved to obtain the same test results may also be used.
6.1.3 Balance: with a division of 0.01g.
6.2 Method B - friction mass loss method
6.2.1 Ventilated drying oven: ventilation may be of pressure type or convection type, with constant temperature control device, which can control the temperature at (105±3)℃.
6.2.2 Martindale abrasion testing apparatus: according to GB/T 21196.1-2007.
6.2.3 Disc sampler: 140 mm in diameter.
6.2.4 Disc sampler: 38 mm in diameter.
6.2.5 Balance: with a division of 0.001g.
6.2.6 Compressed air generator with air jet gun, with the compressed air pressure of 2×105Pa~3×105Pa and air jet gun aperture of 2.5mm.
Foreword i
1 Scope
2 Normative references
3 Principle
4 Test conditions
5 Reagents and materials
6 Apparatus
7 Samples
8 Test procedures
9 Test data processing
10 Test report
