This standard specifies the domestic washing and drying procedures for textile testing. This standard applies to domestic washing and drying of textile fabrics, garments or other textile products. GB/T 8629-2001 Domestic washing and drying procedures for textile testing GB/T8629-2001 Standard download decompression password: www.bzxz.net

GB/T8629—2001
This standard is based on ISO6330:2000 "Textiles - Home washing and drying procedures for textile testing" to revise GB/T8629—1988 "Home washing and drying procedures for textile testing". The main technical contents and test methods after the revision are equivalent to ISO6330:2000.
Compared with GB/T8629—1988, this standard has been revised as follows: 1. A2 type washing machine has been cancelled, A1 type washing machine has been changed to A type, and its technical requirements and washing procedures have been slightly revised; 2. The technical requirements and washing procedures of B type washing machine have been changed from the indicative appendix to the main text of the standard and revised; the position of B type washing machine detergent (WOB) in the standard has been adjusted; 3. The technical requirements for tumble dryers used with type A and type B washing machines are specified; 4. The detergent formula is modified, and the phosphorus-free formula is used instead of the phosphorus-containing formula; 5. The detergent dosage is modified;
6. The hardness of washing water is changed from the original 5mg/kg (ppm) to no requirement for water hardness in general tests, and the hardness of water for arbitration tests is 20mg/kg.
7. The accompanying washing items are modified.
Appendix A, B, and C of this standard are all standard appendices, and Appendix D is a reminder appendix. This standard, together with GB/T8628 Preparation, marking and measurement of fabric specimens and garments in tests for determining dimensional changes of textiles" and GB/T8630 Determination of dimensional changes of textiles after washing and drying" constitute a series of standards for test methods for dimensional changes after household washing and drying.
This standard replaces GB/T8629--1988 from the date of implementation. This standard is proposed by the State Textile Industry Bureau. This standard is under the jurisdiction of the Basic Branch of the National Technical Committee for Textile Standardization. This standard was drafted by the Textile Industry Standardization Research Institute and the Shanghai Textile Industry Technical Supervision Institute, with the assistance of the Zhongshan Exit-Entry Inspection and Quarantine Bureau.
The main drafters of this standard are Tong Jinzhu, Zhu Liang and Wang Shu. This standard was first issued in 1988 and revised for the first time in 2001. 54
GB/T8629-2001
ISOForeword
ISO (International Organization for Standardization) is an international alliance of national standards organizations (ISO members). International standards are usually prepared by ISO technical committees. Every member interested in a project established by a technical committee has the right to participate in the work of the committee. Official and non-official international organizations may also participate in the work by contacting ISO. ISO maintains a close collaborative relationship with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International standards are drafted in accordance with the provisions of Part 3 of the ISO/IEC Directives. The draft international standards adopted by the technical committee are circulated to the members for voting, and can only be published as international standards if more than 75% of the voting members agree. Please note that some of the contents of this International Standard may involve patent rights. ISO is not responsible for the identification of patent rights. International Standard ISO 6330 was prepared by Technical Committee ISO/TC 38/SC 2, Washing, finishing and water repellency testing. This second edition cancels and replaces the first edition (ISO 6330:1984), which has been technically revised. Annexes A to C are appendices to this International Standard. 55
1 Scope
National Standard of the People's Republic of China
Domestic washing and drying procedures for textile testing
Textiles
Textiles-Domestic washing and drying procedures for textile testing
GB/T 8629—2001
eqyIso 6330:2000
Replaces GB/T 8629—1988
1.1 This standard specifies domestic washing and drying procedures for textile testing. This standard applies to the domestic washing and drying of textile fabrics, garments or other textile products.
1.2 This standard specifies the following washing procedures: a) 10 washing procedures using a horizontal drum, front-loading washing machine (Type A washing machine), or b) 11 washing procedures using a top-loading, agitator washing machine (Type B washing machine). The test results of the two washing machines are not comparable. 1.3 Each washing procedure represents a type of domestic washing. 1.4 This standard specifies 6 drying procedures: A-hanging drying
B-drip
C-laying drying
-pressing
E-tumbling drying
F-oven drying
1.5 A complete test includes both washing procedures and drying procedures. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown are valid at the time of publication of this standard. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T7477—1987 Water quality Determination of total calcium and magnesium EDTA titration method (eqVISO6059:1984) GB/T8685—1988 Graphical symbols for instructions for use of textiles and clothing (negISO3758:1984) 3 Principle
The sample is washed and dried using a fully automatic washing machine according to the procedures specified in this standard. 4 Reagents
4.1 Standard detergent
4.1.1 AATCC1993 standard detergent WOB (without fluorescent brightener) for top-loading B-type washing machines. Its nominal composition is shown in Appendix A.
4.1.2 Phosphorus-free ECE standard detergent (without fluorescent brightener), for use in type A and type B washing machines, its nominal composition is shown in Appendix B Approved by the State Administration of Quality and Technical Supervision on February 26, 200156
Implementation on September 1, 2001
GB/T 8629—2001
4.1.3 Phosphorus-free IEC standard detergent (with fluorescent brightener), suitable for use in situations other than assessing color fastness. It can be used in type A and type B washing machines, its nominal composition is shown in Appendix B.
4.2 Water hardness, measured in accordance with GB/T7477, expressed as calcium carbonate. The hardness of water used in arbitration tests shall not exceed 20 mg/kg. 5 Instruments
5.1 Fully automatic washing machines, meeting the following conditions: 5.1.1 Type A washing machines—front-door loading, horizontal tumble type Note 1: Other instruments that have been shown to produce the same test results may also be used. a) Front door feeding, horizontal roller type;
b) Inner roller diameter (51.5±0.5) cm; c) Inner roller depth (33.5±0.5) cm d) Distance between inner and outer rollers (2.8±0.1) cm; e) Lifting plates: three, each (5±0.5) cm high, extending to the entire depth of the inner roller, 120° apart; f) Rotational action:
1 (normal): clockwise (12±0.1) s, stop (3±0.1) s, counterclockwise (12±0.1) s, stop (3±0.1)s; 2 (gentle): clockwise (3±0.1)s, stop (12±0.1)s, counterclockwise (3±0.1>s, stop (12±0.1)s; g) Rotation frequency:
Washing: 52min-1
Dehydration: (500±20)min-1;
h) Normal water supply: (25±5)L/min, (20±5)C Note 2: When using water with a temperature different from that specified in this standard for testing, the actual water temperature should be indicated in the test report. i) Water filling time: less than 2min to fill to a height of 13cm; j) Drainage time: less than 1min to drain from a height of 13cm; k) Heating: electric heating, constant temperature control;
1) Heater power: (5.4±2%)kW. 5.1.2 Type B washing machine - top loading, agitation type Note 3: Other equipment that has been shown to produce equivalent test results may also be used. a) The washing machine consists of a drum with a porous cage inside, the diameter of the cage being (50 ± 5) cm and the depth being (30 ± 5) cm. b) Examples of alternative washing conditions.
Table 1 Example of washing conditions
Washing products
Positive belt/heavy cotton products
Durable pressing
Washing temperature
(30±3)℃
(40±3)℃
(50±3)℃
(60±3)℃
(70±3)℃
Washing products
Stirring speed
Washing time
Spin speed
Final spin time
GB/T 86292001
Example of washing machine program setting when there is no load
Full water level
(2. 983±0,033)s-)
[(179±2)r/min]
(12±1)min
<10. 75±0. 25>s-1
[(645±15)1/min]
(6±1)min
5.2 Rotary tumbling dryer, meeting the following requirements: light| |tt||Full water level
(1.983±0.033)s-1
[(119±2)r/min」
(8±1)min
(7.167±0.25)s-1
[(430±15)r/min]
(6±1)min
Note 4: It has been proven that the same test results can be obtained Other dryers may also be used. 5.2.1 Tumble dryers for use with Type A washing machines: a) Controlled air outlet temperature: Maximum 80°C (see 8.5); b) Peripheral centrifugal acceleration: 0.6g to 0.90g, Note 5: g = 5.6 nd/10°, where: n is the roller speed, r/mind is the roller diameter, mm. c) Roller volume: 80~120L;
d) Can the roller be reversed: Yes;
e) Roller diameter: minimum 55cm;
Durable pressing||tt| |Full water level
(2.983±0.033)s-)
[(179±2)r/min]
(10±1)min
(7. 167±0.25)8
[(430±15)r/min)
(4±1)min
(）Lifting plates: at least three, evenly distributed on the roller The inner side of the cylinder is either integrated with the drum or a detachable part. The lifting piece is an isosceles trapezoid, with a base width of 4~9cm, a vertical height of 4~8cm, and a top width of 1~2cm; g) Input heat: maximum 3.5kW;
h) Cooling time: at least 5min. | |tt||5.2.2 Tumble dryer for use with Type B washing machine: a) The dryer consists of a tumbler with a round cylinder-shaped rotating cage, with a diameter of (75 ± 5) cm and a depth of not less than (40 ± 5) cm. b) Tumble drying conditions are shown in Table 3.
Table 3 Tumble Drying Conditions for Selection
Drying Materials
Normal/Heavy Cotton Fabrics
Durable Pressing
Thin Products||tt ||Outlet temperature
(66±5)℃
(66±5)℃
<60℃
Cooling time
5.3 Washing
5.3.1 Washing articles for A-type washing machines
GB/T 8629-2001
are pure polyester textured filament knitted fabrics with a unit area mass (310 ± 20 ) g/m2, made of four pieces of fabric overlapped, sewn along the four sides, and reinforced with stitches on the corners. The shape is square, the size is (20±4) cm×(20±4) cm, and each piece is sewn together. The weight of the laundry is (50 ± 5) g. Alternatively, folded pure cotton bleached woven fabric or 50/50 polyester-cotton plain bleached woven fabric may be used, both with a mass per unit area of ​​(155 ± 5) g/m2 and dimensions of (92 ± 5) cm × (92 ±5) cm. 5.3.2 For laundry items used in Type B washing machines
, see Table 4.
Table 4 Washing materials for type B washing machines
Characteristics of washing materials
Yarn (ring yarn), tex (N.)
Fabric density, root/ cm
Mass of fabric per unit area, g/m
Size of washing sheet, cm
Mass of washing sheet, g
Type, pure cotton||tt| |37×1(16/1)
210X(190±20)
155±5
92×(92±2)
130±10|| tt||5.4 Electric (dry heat) flat-plate press, the type of press shall be determined by the relevant stakeholders through consultation. 5.5 Hanging drying (see 8.1) or drip drying (see 8.2) facilities, such as ropes, plastic rods, etc. 5.6 Spread out and dry on a screen drying rack, about 16 mesh, made of stainless steel or plastic (see 8.3). 5.7 Oven: Drying temperature is 60℃±5℃. 6 Samples
Sample quantity according to Determined by the purpose of the sample or the requirements of the product standard. 7 Washing program
Type day, 50/50 polyester/cotton
18.6×2(30/2)
190×(190± 20)
155±5
92×(92±2)
130±10
7.1 Select the washing program of type A washing machine from Table 5. Select the washing program of type B washing machine in 6. 59
GB/T 8629—2001
Procedure number
Agitation during washing and rinsing
1) Rinse with cold water:
GB/T8629—2001|| tt||Table 6 Agitator washing machine
Total load
(dry mass), kg
Temperature, °C
Paint washing program for type B washing machine||tt| |Full water level
full water level
full water level
full water level
full water level
full water level
full water level
full water level
full water level
Full water level
Full water level
Full water level
Washing time, min
7.2 If a single sample, finished product or garment is tumble dried, , should be weighed before washing. Flushing
Liquid level 1
Full water level
Full water level
Full water level
Full water level
Full water level
Full Water level
Full water level
Full water level
Full water level
Full water level
Dehydration time
7.3 Load the samples to be washed into the washing machine (see 5.1.1 or 5.1.2) and add enough trapping material (5.3) so that the dry mass in the air of all the loads to be washed reaches the total load value specified by the selected washing program. If the dimensional stability is to be determined, the amount of the sample should not exceed half of the total load. Add sufficient detergent (selected according to 4.1.1 to 4.1.3) to obtain a good stirring foam. The foam height is within the detergent. No more than (3±0.5) cm at the end of the cycle.
Before loading the wash load into the B-type washing machine, fill the washing machine with water at the selected temperature. Add (66±1)g1993AATCC standard detergent, or add IEC or ECE detergent, add The number of people should be controlled to obtain good stirring foam, and the foam height should not exceed (3 ± 0.5) cm at the end of the washing cycle.
7.4 After the last dehydration of the washing process, take out the sample and be careful not to stretch it. Or wring, dry according to a dry medium procedure specified in Chapter 8.
7.5 When the sample is dripping dry, stop the machine and remove the test material before the last dehydration, taking care not to stretch or wring. Drying procedure
8.1 Procedure A: Hang to dry
Hang the dehydrated specimen on a rope or rod (5.5) as specified in 8.2 and dry it according to the procedure specified in 8.2. 8.2 Procedure B—Drip Drying
Remove the specimen from the washing machine and, without draining, hang it on a rope or rod (5.5) to dry in still air at room temperature. The longitudinal direction should be in a vertical position. The product should be hung in the direction of use. 8.3 Procedure C—Lay flat and dry
Place the sample flat on a horizontal screen drying rack (5.6), smooth out the wrinkles with your hands, and do not stretch it. 8.4 Procedure D - Flatbed Pressing
Place the sample on the pressing plate (5.4). Smooth out any wrinkles by hand and lower the press head according to the sample requirements. Press the specimen for one or more short cycles until dry. The temperature of the press head should be appropriate for the specimen being pressed. Record the temperature and pressure used. 8.5 Procedure E -
—Tumble Dry at || tt||Note 6: Procedure E is not applicable to products containing temperature-sensitive fibers. At the end of the washing and dehydration process, immediately load the samples and washware into a tumble dryer (5.2). Tumble dry the fabric as specified below. 61
GB/T 86292001
When it is necessary to measure the temperature of the fabric during tumble drying, a temperature indicator label that can display the temperature can be fixed on the fabric. The temperature range of the temperature indicator label is (40～90)℃.
Tumble dry the fabric at normal temperature (higher temperature) and the test time calculated in Appendix C. At the end of the test, the moisture content of the sample will be equivalent to the moisture content of the conditioned textile (0% moisture content at 20℃ and 65%). When using a weighing scale, first place the tumble dryer on the weighing platform of the scale and measure the mass of the dryer; then load the weighed sample or garment, including the laundry, into the dryer; turn on the machine and dry until constant weight. Turn off the heating. Continue tumbling for at least 5 minutes without heating and measure the mass of the sample. Continue drying the material until the moisture content of the sample is 0~~-2% for synthetic fibers and 0~~-5% for cellulose fibers, or until the test material has a constant weight. For the dryer specified in 5.2.2 and used with a Type B washing machine, the tumble outlet temperature should be set at no more than 70°C for normal fabrics and no more than 50°C for durable press fabrics or thin fabrics. Turn on the machine and heat until the material is dry. After stopping the heating, continue tumbling for 5 minutes and immediately remove the sample. 8.6F Procedure—Oven Drying Place the sample on the screen in the oven and flatten it. Remove the wrinkles by hand, taking care not to stretch or deform it. The oven temperature is 60°C ± 5°C, and then dry it.
9 Test Report
The test report should include the following contents:
a) the number and year of this standard, i.e. GB/T8629--2001, b) the type of washing machine used and the washing program; c) the drying program used, if a dryer is used, indicate the type of dryer; d) the type of detergent used
e) the total dry mass (humidified mass) of the sample and the laundry; f) the laundry used;
g) any details of deviation from this standard.
Standard ingredients of detergents
GB/T 8629—2001
Appendix A
(Appendix to the standard)
AATCC1993 standard detergent WOB
(Phosphorus-free formula does not contain fluorescent brightener)
Linear alkylbenzene sulfonate (LAS)
Solid sodium aluminosilicate
Sodium carbonate
Solid sodium silicate
Sodium sulfate
Polyethylene glycol
Sodium acrylate
Organic silicon defoaming agent
Appendix B
(Appendix to the standard)
Proportion, %
Phosphorus-free ECE and IEC standard detergents
ECE Detergent,%
Sodium linear alkylbenzene sulfonate (average chain length C11.s) Ethoxylated fatty alcohol C12~a (7EO)
Sodium soap (chain length C12~17: 46%C18~20: 54%) 8% antifoam on inorganic carrier
Sodium aluminosilicate (zeolite 4A)
Sodium carbonate
Sodium salt of acrylic acid and maleic acid
Sodium silicate (SiO, : NaO = 3. 3 : 1Carboxymethylcellulose
Ethylenetriaminepentafluoro(methylphosphonic acid)
Fluorescent brightener (stilbene type)
Sodium sulfate (additive)
Sodium perborate tetrahydrate
Ethylenediaminetetraacetic acid
IEC detergent, %
Distribution and mixing
The detergent consists of three mutually separate parts: a) detergent base powder;
b) sodium perborate tetrahydrate:
c) bleach activator ethylenediaminetetraacetic acid.
Mix as follows before use:
GB/T 8629--2001
Pre-dissolve the detergent base powder, sodium perborate and bleach activator in a ratio of 77:20*3: first dissolve the base powder and sodium perborate in tap water at about 40°C, cool the solution to 30°C, and add the bleach activator before injecting the final solution into the washing machine (see 7.3).
If the effect of enzymes needs to be evaluated, the following enzymes may be added selectively, while the amount of detergent base powder is reduced in the same proportion: Name
Protease
Lipase
Amylase
Cellulase
C1 Method for estimating the test time
Savinase 12T
Lipolase 100T
Termamyl 60T
Celluzyme 0. 7T
Appendix ℃
(Standard Appendix)
Determination of the degree of dryness in tumble drying
C1.1 Carry out the test using a load consisting of 100% of the laundry (see 5.3). First determine the conditioned mass of the load. C1.2 Wash according to the washing procedure specified in Chapter 7. Weigh the load after dehydration (initial mass). C1.3 Set the drying time of the dryer (see 5.2) to more than 80 minutes and start the machine. Stop the machine after 30 minutes (preferably 60 minutes if possible) and take out the load and weigh it. Calculate the amount of water evaporated. Calculate the drying rate a by dividing the evaporated water by the drying time. C1.4 Add the same amount of water as in 7.1 to the washing machine to soak the load again, and then move the washing program to the last spin for dehydration. After dehydration, weigh the load. From the mass and the drying rate a, calculate the pre-drying time by dividing the water content by the drying rate (a). C1.5 Reinstall the load into the dryer and set a safety time that exceeds the pre-drying time. Start the machine. C1.6 When the pre-drying time is reached, stop the machine immediately and take out the load and weigh it. Calculate the amount of evaporated water, and according to the evaporated water and pre-drying time, use the evaporated water divided by the actual drying time to calculate the "drying rate\. C1.7 Calculate the test time according to formula (1), and perform the test according to the time setting. Initial mass - humidification mass × 60 + cooling time test time =,
The following is the method for calculating the test time.
Humidification mass of the load
Initial mass of the load (C1.2)
Mass of water contained
Drying rate (6)
If the actual evaporation of water after 30 minutes is
or the actual evaporation of water after 60 minutes is
then: Drying rate (a)
Pre-drying time
If the actual evaporation of water after 81 minutes is
then: Drying rate (6)
Test time =
GB/T 8629--2001
=3.5/2.6=1.35 h(i.e. 81 min)
=3.34/1.35=2.47kg/h
Moisture content
×60+5minCooling time
Drying rate(6)
In this example, it is: 3.5/2.47)×60+5=90minAs can be seen from the above example, using the drying rate to calculate the test time will underestimate by 5%. Therefore, a second test is required to make up for the shortfall. If the temperature and relative humidity of the ambient atmosphere can remain roughly stable, the drying rate b only needs to be determined once. If the atmosphere changes, a new drying rate should be determined under the new conditions. The test time estimated by the above method is different from the actual test time measured using a precision scale. The difference is within 2%. This level of accuracy is sufficient to compensate for the deviation caused by over-drying of some fibers due to differences in fiber properties when drying different types of fibers in the same feed.
C2 Effect of tumble drying on wrinkles
For some textiles, tumble drying is beneficial for removing wrinkles produced during the washing process. C3 Repeat test
When multiple tests are conducted, after one test is completed, the dryer is cooled to ambient temperature before the next test is conducted. The cooling step can be repeated for cooling.
C4 Drying end pointbZxz.net
When the ratio of the difference between the loading mass and the humidification mass to the humidification mass is 0 to 2% for synthetic fibers,For cellulose fibers, when the content is 0-5%, the drying end point is reached.
Drying end point (%) II
Load mass at the drying end point,
Moisturizing mass
Appendix D
(Suggestive Appendix)
Examples of selection of washing programs for type A washing machines
For clothing and other finished products, wash according to the washing conditions in the instructions. For non-finished products, it is recommended to select the required washing program from the standard according to the fiber properties of the sample. The following are examples of selection. 1A Bleached cotton and linen fabrics without special finishing. 2A Cotton, linen or viscose fabrics without special finishing. 3A Bleached nylon, bleached polyester-cotton blended fabrics. 4A Specially finished cotton and viscose fabrics, dyed nylon, polyester, acrylic blended fabrics, dyed polyester-cotton blended fabrics. 5A Cotton, linen or viscose fabrics.
Acrylonitrile, acetate and triacetate, as well as their blended fabrics with wool, and their blended fabrics with paint and wool. 6A
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