GB/T 8629-2017 English PDF (GBT8629-2017)

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GB/T 8629-2017: Textiles -- Domestic washing and drying procedures for textile testing
GB/T 8629-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.01
W 04
Replacing GB/T 8629-2001
Textiles - Domestic Washing and Drying Procedures for
Textile Testing
(ISO 6330:2012, MOD)
ISSUED ON: MAY 12, 2009
IMPLEMENTED ON: DECEMBER 01, 2010
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the
People’s Republic of China;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4 
1 Scope ... 7 
2 Normative References ... 8 
3 Terms and Definitions ... 8 
4 Principle ... 9 
5 Apparatus and Materials ... 9 
5.1 Automatic washing machines ... 9 
5.2 Tumble dryers ... 9 
5.3 Electrically (dry) heated flat-bed press ... 10 
5.4 Line drying ... 10 
5.5 Drying racks ... 10 
5.6 Ballasts ... 10 
6 Reagents ... 10 
6.1 Reference detergents ... 10 
6.2 Water ... 12 
7 Conditioning and Testing Atmosphere ... 12 
8 Wash Load... 12 
8.1 Total wash load ... 12 
8.2 Number of specimens ... 12 
8.3 Selection of ballast ... 12 
8.4 Ratio of load to ballast ... 13 
9 Washing Procedure ... 13 
10 Drying Procedure ... 14 
10.1 Open-air dry ... 14 
10.2 Tumble dry ... 15 
11 Test Report ... 16 
Annex A (Normative) Specification for Reference Washing Machine Type A —
Horizontal Axis, Front-loading Type ... 18 
Annex B (Normative) Specification for Wash Procedures for Reference Washing
Machine Type A ... 19 
Annex C (Normative) Specification for Reference Washing Machine Type B —
Vertical Axis, Top-loading Agitator Type ... 22 
Annex D (Normative) Specification for Washing Procedures for Reference Washing
Machine Type B ... 23 
Annex E (Normative) Specification for Reference Washing Machine Type C —
Vertical Axis, Top-loading Pulsator Type ... 24 
Annex F (Normative) Specification for Washing Procedures for Reference Washing
Machine Type C ... 25 
Annex G (Normative) Specification for Tumble Dryers ... 26 
Annex H (Normative) Specifications for All Ballast Types Used in Washing ... 27 
Annex I (Normative) Nominal Percentage Composition for Non-phosphate Powder
Reference Detergent 1 ... 28 
Annex J (Normative) Nominal Percentage Composition for Non-phosphate Reference
Detergent 2 ... 30 
Annex K (Normative) Nominal Percentage Composition for Non-phosphate
Reference Detergent 3 ... 31 
Annex L (Normative) Nominal Percentage Composition for Reference Detergent 4 . 32 
Annex M (Normative) Nominal Percentage Composition for Non-phosphate Liquid
Reference Detergent 5 ... 33 
Annex N (Normative) Nominal Percentage Composition for Powder Reference
Detergent 6 ... 35 
Annex O (Normative) Distribution and Mixing of Reference Detergent 2, 3 or 6 ... 36 
Annex P (Normative) Determination of Cycle Drying Time for Tumble Dryers With a
Timer Device ... 38 
Annex Q (Informative) Drying Procedure — Oven Dry ... 40 
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.
5.2.1 Type A1 tumble dryer – Vented
The specification for Type A1 tumble dryer is given in Annex G.
5.2.2 Type A2 tumble dryer – Condenser
The specification for Type A2 tumble dryer is given in Annex G.
5.2.3 Type A3 tumble dryer – Large vented
The specification for Type A3 tumble dryer is given in Annex G.
5.3 Electrically (dry) heated flat-bed press
If this method of drying is used, the type of press shall be specified among the interested parties.
5.4 Line drying
For procedure for line drying, see 10.1.1; for drip line drying, see 10.1.2.
5.5 Drying racks
Use screen drying racks of approximately 16 mesh stainless steel or plastic for flat drying (see
10.1.3) or drip flat drying (see 10.1.4).
5.6 Ballasts
5.6.1 Type I, 100% Cotton ballast
The nominal composition of 100% Cotton ballast is given in Annex H.
5.6.2 Type II, 50% Cotton/50% Polyester ballast
The nominal composition of 50% Cotton/50% Polyester ballast is given in Annex H.
5.6.3 Type III, 100% Polyester ballast
The nominal composition of 100% Polyester ballast is given in Annex H.
6 Reagents
6.1 Reference detergents
6.1.1 Reference detergent 1
Reference detergent 1 is a non-phosphate powder detergent without enzymes and is available both
with and without optical brightener. [Other designations are 1993 AATCC standard reference
detergent without optical brightener (WOB) and 1993 AATCC standard reference detergent with
optical brightener.]
Reference detergent 1 can only be used in machine Type B. The nominal composition of reference
detergent 1 is given in Annex I.
6.1.2 Reference detergent 2
Reference detergent 2 is a non-phosphate powder detergent with optical brightener and with
enzymes (another designation is IEC reference detergent A∗). Reference detergent 2 can be used
in both machine Type A and Type B. The nominal composition of reference detergent 2 is given in
Annex J. For distribution and mixing, see Annex O.
6.1.3 Reference detergent 3
Reference detergent 3 is a non-phosphate powder detergent without optical brightener and without
enzymes (Another designation is ECE reference detergent 98). Reference detergent 3 can be used
in both machine Type A and Type B. The nominal composition of reference detergent 3 is given in
Annex K. For distribution and mixing, see Annex O.
6.1.4 Reference detergent 4
Reference detergent 4 is a non-phosphate powder detergent with optical brightener and with
enzymes. [Another designation is JIS K 3371 (Category 1).]. Reference detergent 4 can only be
used in washing machine Type C. The nominal composition of reference detergent 4 is given in
Annex L.
6.1.5 Reference detergent 5
Reference detergent 5 is a non-phosphate liquid detergent and is available both with and without
optical brightener (WOB) (Other designations are 2003 AATCC standard reference liquid
detergent with optical brightener and 2003 AATCC standard reference liquid detergent without
optical brightener). Reference detergent 5 can only be used in washing machine Type B. The
nominal composition of reference detergent 5 is given in Annex M.
6.1.6 Reference detergent 6
Reference detergent 6 is a non-phosphate powder detergent with optical brightener and without
enzymes....