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This standard was developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces Textiles — Domestic Washing and Drying Procedures for Textile Testing (GB/T 8629-2001). The following technical deviations have been made with respect to the GB/T 8629-2001 (the previous edition):
— In the scope of this standard, 3 different washing procedures of washing machine Type A are added; 7 different washing procedures of washing machine Type C are added; "flat dry" is added and "oven dry" is deleted; the notes of 1.4 and 1.5 are added (see Clause 1; Clause 1 of Edition 2001);
— GB/T 6529 is added in normative references, and GB/T 8685 is deleted (see Clause 2; Clause 2 of Edition 2001);
— Clause 3 "Terms and Definitions" is added, and the clause numbers extended accordingly (see Clause 3);
— Clause 4 of the original standard is adjusted to Clause 6 of this standard, and the types of reference detergent is changed from 3 to 6 (see Clause 6; Clause 4 of Edition 2001);
— Water hardness is revised from "water hardness for arbitration test shall not exceed 20 mg/kg" to "water hardness shall be lower than 0.7 mmol/L" (see 6.2.1; 4.2 of Edition 2001);
— The requirements of water pressure and water inlet temperature are added (see 6.2.2 and 6.2.3);
— Clause 5 "Apparatus" is revised as "Apparatus and Materials", and Tables 1 and 2 of the original standard are deleted (see Clause 5; Clause 5 of Edition 2001);
— Washing machine Type C is added; partial specifications of washing machine Type A and Type B are modified, and washing machine Type A is classified into washing machine Type A1 and Type A2; the specifications of washing machines are adjusted to corresponding annexes (see Clause 5; Clause 5 of Edition 2001);
— Table 3 and the requirements of dryer used with corresponding type of washing machine of the original standard are deleted; dryers are classified into Type A1 (vented), Type A2 (condenser) and Type A3 (large vented); the specification parameters of dryers are modified and the parameters are adjusted to corresponding annexes (see 5.2; 5.2 of Edition 2001);
— Specification parameters and selection method of ballast are modified, and the parameters are adjusted to corresponding annexes (see 5.6; 5.3 of Edition 2001);
— 5.7 "Oven" of the original standard is deleted (see 5.7 of Edition 2001);
— Clause 7 "Conditioning and Testing Atmosphere" is added (see Chapter 7);
— The provisions of wash load and ballast in Clauses 6 and 7 of the original standard are adjusted to Clause 8 of this standard (see Clause 8; Clauses 6 and 7 of Edition 2001);
— Partial provisions of washing procedures of washing machine Type A (Table 5 of the original standard) are modified; except simulated hand wash, the sequencing series number of “1A, 2A, 3A…” are revised as the code series number of the first digital, which represents wash temperature, plus the first letter of agitation type (Normal, Mild and Gentle), for example, original series number 5A is adjusted to 4N, and Table 5 of the original standard is adjusted to Annex B (see Annex B; Table 5 of Edition 2001);
— Partial provisions of washing procedures of washing machine Type B (Table 6 of the original standard) are modified, and Table 6 of the original standard is adjusted to Annex D (see Annex D; Table 6 of Edition 2001);
— Washing procedures of washing machine Type C are added (see Annex F);
— Dosage of reference detergent and applicable machine types are specified, and Table 1 is added (see 9.3);
— Main technical requirements of Clause 8 of the original standard are itemized, the setting requirements of the temperature of the exhaust from the drum are modified, and 10.1.4 and 10.2.4 are added (see Clause 10; Clause 8 of Edition 2001);
— The original Annex A to Annex C are adjusted to Annex I, Annex K to Annex P; Annex A to Annex H, Annex J and Annex Q are added; and the original Annex D is deleted (see Annex A to Annex Q; Annex A to Annex D of Edition 2001).
This standard has been redrafted and modified adoption of International Standard ISO 6330:2012 Textiles — Domestic Washing and Drying Procedures for Textile Testing (English version).
The technical deviations between this standard and the International Standard ISO 6330:2012 are as follows:
— Adjustment on technical differences had been made in "Normative References" of this standard so that the technical conditions in China are met; the adjustment situations embodied a concentrated reflection in Chapter 2 "Normative References", and the specific adjustments are as follows:
? GB/T 6529 is replaced by GB/T 6529, which is modified in relation to the international standard;
? ISO 6059 is replaced by GB/T 7477 which is identical to the international standard.
For the purposes of this standard, the following editorial changes have also been made:
— The note of 1.4 is added;
— IEC 60456 is deleted from the note of 6.2.1;
— The note of 8.3 and 10.2.3 are added;
— Due to clerical errors of the international standard, partial parameters of the washing machine Type A2 type Annex A (Normative) are corrected;
— The note of Annex B is added and Annex Q (Informative) is added;
— Bibliography of the international standard is deleted.
This standard was proposed by the China National Textile and Apparel Council.
This standard was prepared by SAC/TC 209/SC 1 (Basic Standard Subcommittee 1 of the National Technical Committee 209 on Textiles of the Standardization Administration of China).
The previous editions of the standard replaced by this standard are as follows:
— GB/T 8629-1988, GB/T 8629-2001.
Textiles — Domestic Washing and Drying Procedures for Textile Testing
1 Scope
1.1 This standard specifies domestic washing and drying procedures for textile testing. The procedures are applicable to textile fabrics, garments or other textile articles which are subjected to appropriate combinations of domestic washing and drying procedures. This standard also specifies the reference detergents and ballasts for the procedures.
1.2 This standard specifies the following washing procedures:
a) 13 different washing procedures based on the use of the reference washing machine Type A: horizontal axis, front-loading type;
b) 11 procedures based on the use of the reference washing machine Type B: vertical axis, top-loading agitator type;
c) 7 procedures based on the use of the reference washing machine Type C: vertical axis, top-loading pulsator type.
1.3 Each washing procedure represents a single domestic wash.
1.4 This standard also specifies six drying procedures:
A — Line dry
B — Drip line dry
C — Flat dry
D — Drip flat dry
E — Flat press
F — Tumble dry
Note: When decided through consultation between all parties concerned, oven drying procedure may be used, see also Annex Q.
1.5 A complete test consists of a washing and drying procedure.
Note: Use of different parameters (washing machine type, detergent type and type of tumble drier) may affect test results for any test using this standard. Therefore, parties using this standard are strongly encouraged to agree on the parameters to be used.
2 Normative References
The following referenced documents are indispensable for the application of this document. 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 6529-2008, GB/T 6529:2005, MOD)
GB/T 7477 Water Quality — Determination of the Sum of Calcium and Magnesium — EDTA Titrimetric Method (GB/T 7477-1987, eqv ISO 6059:1984)
3 Terms and Definitions
For the purpose of this document, the following terms and definitions apply.
3.1
ambient conditions
temperature and relative humidity in the test environment not differing from the normal indoor condition or the normal outdoor condition in the region where the test is performed
3.2
ballast
textile load (cotton, cotton/polyester or polyester) to be added to the specimen under test in order to achieve the specified weight in the reference washing machines
3.3
controlled humidity device
control unit in a tumble dryer capable of measuring the humidity of the load and ending the drying operation at a predetermined residual moisture level
3.4
overdrying
prolonged drying operation where the load is dried until all remaining moisture in the load has been removed
3.5
reference detergent
detergent with specified formulations to be used for testing purposes
3.6
reference washing machine
washing machine with defined engineering specifications to be used for testing purposes
3.7
washing procedure
cycle of the washing action including water supplying, washing, and repeated rinsing, spinning and water supplying and ended by spinning as predetermined on the washing machine
3.8
spinning process
water-extracting process in the washing machine by which water is removed from the textiles by centrifugal action as a part of the washing procedure
3.9
still air
air not influenced by any natural wind or mechanical device giving it a forced flow
3.10
total air-dry mass
total weight of the specimen under test and the ballast in a conditioned state according to GB/T 6529
4 Principle
A specimen is washed in an automatic washing machine and dried according to specified procedures.
5 Apparatus and Materials
5.1 Automatic washing machines
5.1.1 Reference washing machine Type A — Horizontal axis, front-loading type
The specification for reference washing machine Type A is given in Annex A.
5.1.2 Reference washing machine Type B — Vertical axis, top-loading agitator type
The specification for reference washing machine Type B is given in Annex C.
5.1.3 Reference washing machine Type C — Vertical Axis, top-loading pulsator type
The specification for reference washing machine Type C is given in Annex E.
Foreword III
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Apparatus and Materials
5.1 Automatic washing machines
5.2 Tumble dryers
5.3 Electrically (dry) heated flat-bed press
5.4 Line drying
5.5 Drying racks
5.6 Ballasts
6 Reagents
6.1 Reference detergents
6.2 Water
7 Conditioning and Testing Atmosphere
8 Wash Load
8.1 Total wash load
8.2 Number of specimens
8.3 Selection of ballast
8.4 Ratio of load to ballast
9 Washing Procedure
10 Drying Procedure
10.1 Open-air dry
10.2 Tumble dry
11 Test Report
Annex A (Normative) Specification for Reference Washing Machine Type A — Horizontal Axis, Front-loading Type
Annex B (Normative) Specification for Wash Procedures for Reference Washing Machine Type A
Annex C (Normative) Specification for Reference Washing Machine Type B — Vertical Axis, Top-loading Agitator Type
Annex D (Normative) Specification for Washing Procedures for Reference Washing Machine Type B
Annex E (Normative) Specification for Reference Washing Machine Type C — Vertical Axis, Top-loading Pulsator Type
Annex F (Normative) Specification for Washing Procedures for Reference Washing Machine Type C
Annex G (Normative) Specification for Tumble Dryers
Annex H (Normative) Specifications for All Ballast Types Used in Washing
Annex I (Normative) Nominal Percentage Composition for Non-phosphate Powder Reference Detergent
Annex J (Normative) Nominal Percentage Composition for Non-phosphate Reference Detergent
Annex K (Normative) Nominal Percentage Composition for Non-phosphate Reference Detergent
Annex L (Normative) Nominal Percentage Composition for Reference Detergent
Annex M (Normative) Nominal Percentage Composition for Non-phosphate Liquid Reference Detergent
Annex N (Normative) Nominal Percentage Composition for Powder Reference Detergent
Annex O (Normative) Distribution and Mixing of Reference Detergent 2, 3 or
Annex P (Normative) Determination of Cycle Drying Time for Tumble Dryers With a Timer Device
Annex Q (Informative) Drying Procedure — Oven Dry
