This standard specifies the method for determining the dimensional change of textiles after washing and drying. This standard is applicable to the determination of fabrics, garments and other textile products. Various factors need to be considered when interpreting test results for textile products or materials that are easily deformed. GB/T 8630-2002 Determination of dimensional change of textiles after washing and drying GB/T8630-2002 standard download decompression password: www.bzxz.net

ICS_ 59. 080. 01
National Standard of the People's Republic of China
GB/T 8630—2002
/8635—1988
Textiles-Determination of dimensional change in washing and drying (ISO507:1984.OD) Issued on October 16, 2002 General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Implementation on April 7, 2003 CBT8630-2002 This standard is modified and adopted 1505077:1964 <Determination of dimensional changes of textiles after washing and drying>. This standard is revised from B/86201SB Determination of dimensional changes of textiles after washing and drying>. This standard is optimized and improved from GB/8650-196B. Compared with GB/18630-1S, the main changes of this standard are as follows: a) Regarding the test sample, 6.2 will be changed to "according to the test results" The number of test specimens is determined according to the sales requirements of the results (whether A is recorded in the Appendix) or the provisions of the product standard. + The explanation of Source 6.3 "In some cases, the number of test specimens is also called "4^" has been deleted: The calculation method of dimensional change rate has been modified. The original method of using the average size measured value to calculate the total size change has been changed to calculating the size change at each location without opening. The total average value of the size change rate is calculated; (C) The name of Appendix A "internal number of requirements" is changed to "confidence limit of the average size change of the longitudinal object". This standard is different from 15G7713 as follows: www.bzxz.net
A) In 6.2, in addition to retaining the current provision of 1S05077\determining the requirements for the precision of the test results (4 per hundred)\, it has been added that the number of test specimens can be determined according to the provisions of the product standard. The book is missing) 50 ~ in some cases, the test sample can be less than 4" description;
) 5.2, the dimensional change rate of 105077 is about 0.5 reported to be about U.1%. The standard is consistent with GB/T6626-2G61&Collar fabric length standard test fabric sample preparation, marking technology measurement, G8629-001≤Collar fabric, test state home washing and drying procedures> Common class family washing and ten rubbing after ten rubbing test method system List of standard groups.
This standard is a human-made data appendix:
This standard is proposed by the China National Textile and Apparel Association. The national standard is issued by the National Textile Standardization Technical Committee, and this standard is under the jurisdiction of the Textile Industry Standardization Research Institute and the Industrial Technology Supervision Institute. The main drafters of this standard are: British Society of Textiles, Shiji. This standard was first issued in 19k. This is the first revision. 1 Scope
Washing Determination of dimensional change after washing and drying
Textiles
This standard specifies the method for determining the dimensional change of textiles after washing and drying. This standard is mainly used for the determination of fabrics, garments and other textile products. Various factors should be considered when interpreting the test results of textile products or easily deformed materials. 2 Normative references
GR/TB6302002
The clauses in the following documents become clauses of this standard through reference in this standard. For the documents of their production period, the following documents shall apply to the following documents: All trend changes (excluding auxiliary inner wear) or revisions are not applicable to this standard. However, the parties to the agreement are encouraged to study whether to use the latest versions of these documents. For any out-of-date reference documents, the latest version shall apply to this standard. GH6529 Standard sieve for fabric strength adjustment and testing (GB65291986.6IS) 139: 1973 CB 2628 Preparation, marking and measurement of test garments in product size change test (G/86252G91c 19 59:1554
/F629 Test data of household textiles and household paint and ten series (415/T8539--2u01.Eq1S()63302C03 Treatment
Test performance summary Washing and the standard atmosphere household readings are all measured, the sample is dried and then humidified again, the sample is measured and the size change rate is calculated,
4 Equipment and reagents
According to the relevant provisions of G3/T862R (k/8629) 5 Meteorological conditions
Pre-test and test according to GR atmospheric pressure %529. 6 Samples
6-1 Selection, marking and measurement of test molds shall be carried out in accordance with 6B/828. 6.2 According to the requirements for test results, the number of test specimens shall be determined according to the provisions of the reference price limit record or product standard. In this test, it is recommended that each product be tested 4~ in each state, and washed twice. Each washing process requires a test group: the number of repetitions for each test is 2. 7 Test steps
7.1 Pre-humidify the test rod and reduce the plate size according to the method specified in (3/1828. Determine the initial length and initial width of the test rod. 7.2 After the relevant stakeholders agree to use a washing sequence specified in 6B/59, the test column 7.3 Test the paint, and after washing, measure the size and change rate of the sample according to the method specified in GR8. 8 Result expression 8.1 According to the provisions of 3R625, the average value of the dimensional change rate of the specimen in the universal direction and the arbitrary direction is calculated by formula (1) and formula (2): GB/T 8630-2002 Length change (%) Final length Initial length × 100 Final length Final length (%) = Initial width × 10.
8.2 The average value of the dimensional change rate is about (1/83). Page number (a) indicates the minimum shrinkage of the dimension, and (+) indicates the maximum shrinkage of the dimension. 9. Test report
The test report shall include the following contents:
a! State the standards, markings and measurements of the specimens or the measurements made in accordance with this standard, and list any additional measurement items paid: 6! The selection and process used, other adjustments and methods 1:) The number of tests selected:
For fabric specimens, report the average dimensional change in the length direction (warp or transverse) and the average dimensional change in the width direction (approximately 2/4 or transverse direction):
The type, marking and size of the test garment! The manufacturer shall state the average dimensional change rate of each measurement position of the garment and the appropriate dimensional change rate at each measurement position. 2
|(Informative Appendix)
Confidence limits of average size change rate of fabric samples in Table A.1 are estimated limits of average size change rate of fabric samples under the condition of probability % of this standard. GA/T8630-2002
Table A.1 is the result of a joint test organized by the laboratory in 1973-1971. The results of the joint test of the laboratory are slightly different from those of this standard. The confidence interval of this standard may be slightly narrower than that of Table A.1.
Table A.1 is the confidence limit of average size change rate of fabric samples under the condition of probability % of this standard. The confidence interval of this standard may be slightly narrower than that of Table A.1.
Table A.1 is the confidence limit of average size change rate of fabric samples under the condition of probability % of this standard. The confidence interval of each test is ±23. Note that the middle digit is not applicable to the case of size change exceeding 5. +6.
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