Detail of FZ/T 73020-2019

Introduction of FZ/T 73020-2019

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces FZ/T 73020-2012 Knitted casual wear and the following main technical changes have been made with respect to FZ/T 73020-2012: ——the application scope of this standard is modified (see Clause 1; Clause 1 of Edition 2012); ——the normative references are adjusted (see Clause 2; Clause 2 of Edition 2012); ——the terms and definitions of mini shorts and fluorescent color are added (see 3.1 and 3.2); ——the designation principle of sizing beyond the range is added (see Clause 4); ——the requirements for net dry fiber content are canceled (see Table 1; Table 1 of Edition 2012); ——the assessment index of pilling is adjusted (see Table 1; Table 1 of Edition 2012); ——the requirements for the distortion rate after water washing for coats are adjusted (see Table 1; 4.3 of Edition 2012); ——the assessment index and test method of staining by washing liquor are added (see Table 1 and 6.1.11); ——the requirements for color fastness to printing (pressing) are deleted (see Table 1; Table 1 of Edition 2012); ——some assessment indexes of color fastness to rubbing, color fastness to light, color fastness to dry cleaning and color fastness to light of textiles wetted with artificial perspiration are adjusted (see Table 1; Table 1 of Edition 2012); ——the assessment on color fastness of lining is added (see Table 1); ——the assessment content of appearance quality after washing is added (see Table 1; Table 1 of Edition 2012); ——the assessment requirements for color fastness to light of fluorescent color garments are added (see 5.3.6); ——the assessment requirements for color fastness of natural-color and bleached products are added (see 5.3.12); ——the sewing requirements are simplified (see 5.4.4; 4.4.8 of Edition 2012); ——the relevant contents of one-piece dress and short skirt are deleted (see 4.4.5, 4.4.7.3, 4.4.7.4, 5.3.2.3.4 and 5.3.2.3.5 of Edition 2012); ——the requirements for sampling quantity are modified (see 7.1; 5.1 of Edition 2012); ——the relevant description for the measuring method of distortion rate after water washing is adjusted (see 6.1.10.2; 5.3.4.3 of Edition 2012); ——the test methods for color fastness to transfer in joints are modified (see 6.1.18; Annex A of Edition 2012); ——result judgment and single-piece judgment are added (see 8.1.3 and 8.2); ——the requirements of GB 31701 are added in product instructions (see 9.1; 7.1 of Edition 2012); ——Annex A is deleted (see Annex A of Edition 2012). This standard was proposed by China National Textile and Apparel Council. This standard is under the jurisdiction of the Subcommittee on Knitwear of National Technical Committee on Textiles of the Standardization Administration of China (SAC/TC 209/SC 6). The previous editions of this standard are as follows: ——FZ/T 73020-2004 and FZ/T 73020-2012. Knitted casual wear 1 Scope This standard specifies the terms and definitions, product sizing, requirements, test methods, sampling rules, judgment rules, product instructions, packaging, transportation and storage of knitted casual wear. This standard is applicable to identifying the quality of knitted casual wear mainly made of knitted fabrics through processing. This standard is not applicable to the garments for infants aged 36 months and below. 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 250 Textiles - Tests for color fastness - Grey scale for assessing change in color GB/T 251 Textiles - Tests for color fastness - Grey scale for assessing staining GB/T 1335 (All parts) Standard sizing systems for garments GB/T 2910 (All parts) Textiles - Quantitative chemical analysis GB/T 2912.1 Textiles - Determination of formaldehyde - Part 1: Free and hydrolyzed formaldehyde (water extraction method) GB/T 3920 Textiles - Tests for color fastness - Color fastness to rubbing GB/T 3921-2008 Textiles - Tests for colour fastness - Colour fastness to washing with soap or soap and soda GB/T 3922 Textiles - Tests for color fastness - Color fastness to perspiration GB/T 4802.1-2008 Textiles - Determination of fabric propensity to surface fuzzing and to pilling - Part 1: Circular locus method GB/T 4856 Package of cotton goods and knitwear GB/T 5296.4 Instructions for use of products of consumer interest - Part 4: Textiles and apparel GB/T 5711 Textiles - Tests for colour fastness - Colour fastness to dry cleaning using perchloroethylene solvent GB/T 5713 Textiles - Tests for color fastness - Color fastness to water GB/T 6411 A series of size of knitted underwear GB/T 7573 Textiles - Determination of pH of aqueous extract GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 8427-2008 Textiles - Tests for color fastness - Color fastness to artificial light: Xenon arc fading lamp test GB/T 8629-2017 Textiles - Domestic washing and drying procedures for textile testing GB/T 8878 Knitted cotton underwear GB/T 14576 Textiles - Tests for color fastness - Color fastness to light of textiles wetted with artificial perspiration GB/T 14801 Test method for skewness and bow in woven and knitted fabrics GB/T 15557-2008 Standard terminology relating to apparel GB/T 17592 Textiles - Determination of the banned azo colorants GB 18401 National general safety technical code for textile products GB/T 19976-2005 Textiles - Determination of bursting strength - Steel ball method GB/T 29862 Textiles - Identification of fiber content GB/T 31127-2014 Textiles - Tests for colour fastness - Colour fastness to transfer in joints GB 31701 Safety technical code for infants and children textile products FZ/T 01026 Textiles - Quantitative chemical analysis - Mulitinary fibre mixtures FZ/T 01057 (All parts) Test method for identification of textile fibers FZ/T 01095 Textile - Test method of elastane fibre content FZ/T 01101 Textile test method - Fiber content - Quantitative physical analysis FZ/T 80007.3-2006 Dry wash resistance test method for garments used adhesive interlining GSB 16-1523 Knitted fabric fuzzing and pilling sample photograph GSB 16-2159 Knitwear standard depth scale (1/12) GSB 16-2500 Color sample photos of surface defect on knitted fabrics 3 Terms and Definitions For the purpose of this document, the following terms and definitions apply. 3.1 mini shorts shorts that extend to the mid-thigh length or above [GB/T 15557-2008, Definition 3.33] 3.2 fluorescence color color of some substances when they are excited to emit visible light after absorbing incident light of a certain wavelength Note: the color showing fluorescence after being irradiated by an ultraviolet lamp. 4 Product sizing It shall be implemented in accordance with GB/T 6411 or GB/T 1335 (all parts), and the sizing beyond the standard range may be increased or decreased in sequence according to the grading principles specified in the standard. 5 Requirements 5.1 Specific requirements The requirements involve two aspects, i.e. inherent quality and appearance quality. Inherent quality includes the indexes such as fiber content, formaldehyde content, pH value, peculiar smell, decomposable carcinogenic aromatic amine dyes, bursting strength, pilling, dimensional change rate in water washing, dimensional change rate by dry cleaning, distortion rate after water washing, staining by washing liquor, color fastness to soaping, color fastness to water, color fastness to perspiration, color fastness to rubbing, color fastness to light, color fastness to dry cleaning, color fastness to transfer in joints, color fastness to light of textiles wetted with artificial perspiration, and appearance quality after washing. Appearance quality includes the indexes such as surface defect, specification and dimension deviation, dimensional difference in symmetric parts and sewing requirements. 5.2 Grading requirements 5.2.1 The products are classified into superior products, first-grade products and acceptable products in terms of the quality grade. 5.2.2 The products are graded by batches in terms of inherent quality and by pieces in terms of appearance quality, and the lower grade shall prevail in case of a combination of both. 5.2.3 For all inherent quality indexes, the worst inspection result is regarded as the grading basis for this batch of products. 5.2.4 Where appearance quality problems of different product grades are found on the same product, the product shall be graded according to the lowest quality grade. For one product, only two limit surface defects of the same grade are allowed to exist; otherwise, it shall be degraded by one grade.

Contents of FZ/T 73020-2019

Foreword i 1 Scope 2 Normative references 3 Terms and Definitions 4 Product sizing 5 Requirements 6 Test methods 7 Sampling rules 8 Judgment rules 9 Instructions, packaging, transportation and storage