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GB/T 22849-2024: Knitted T-shirt Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 22849: Historical versions
Similar standardsGB/T 22849-2024: Knitted T-shirt---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT22849-2024GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 59.080.30 CCS W 63 GB/T 22849-2024 Replacing GB/T 22849-2014 Knitted T-shirt Issued on. MARCH 15, 2024 Implemented on. OCTOBER 01, 2024 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 8 4 Product size... 8 5 Requirements... 8 6 Tests... 12 7 Sampling rules... 19 8 Judgment rules... 19 9 Product instructions, packaging, transportation and storage... 20 Knitted T-shirt1 ScopeThis document specifies the product size, technical requirements, sampling rules, judgment rules, product instructions, packaging, transportation and storage requirements of knitted T-shirts, and describes the corresponding test methods. This document applies to the identification of the quality of various types of knitted T- shirts made mainly of knitted fabrics. This document does not apply to knitted T-shirts for infants and young children aged 36 months and below.2 Normative referencesThe 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 colour fastness - Grey scale for assessing change in colour GB/T 251 Textiles - Tests for colour 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 colour fastness - Colour 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 colour fastness - Colour fastness to perspiration GB/T 4802.1-2008 Textiles - Determination of fabric propensity for fuzzing and pilling - Part 1.Circular locus method GB/T 4802.3 Textiles - Determination of fabric propensity to surface fuzzing and to pilling - Part 3.Pilling box method3 Terms and definitionsFor the purpose of this document, the following terms and definitions apply. 3.1 fluorescence color The color that certain substances exhibit when they absorb incident light of a certain wavelength and are excited to emit visible light.4 Product sizeAccording to the provisions of FZ/T 70014 or GB/T 1335 (all parts).5 Requirements5.1 Grading regulations 5.1.1 The quality grades are divided into superior products, first-class products and qualified products. 6.1.1.2 Before the tests of dimensional change rate after washing and distortion rate after washing, the humidity shall be adjusted according to the standard atmosphere specified in GB/T 6529, and the test can be carried out after the humidity adjustment meets the requirements. 6.1.2 Test methods 6.1.2.3 pH value According to the provisions of GB/T 7573. 6.1.2.4 Odor According to the provisions of GB 18401. 6.1.2.5 Decomposable carcinogenic aromatic amine dyes According to the provisions of GB/T 17592. 6.1.2.6 Bursting strength According to the provisions of GB/T 19976-2005, the diameter of the steel ball is (38 ± 0.02) mm. 6.1.2.7 Dimensional change rate after washing 6.1.2.8 Dimensional change rate after dry cleaning Carry out according to the provisions of 8.1 conventional dry cleaning method in FZ/T 80007.3-2006, and the number of test pieces is 1.Measure according to the test method for dimensional change rate after washing. 6.1.2.9 Distortion rate after washing 6.1.2.17 Color fastness to light of textiles wetted with artificial perspiration Carry out according to the provisions of GB/T 14576. 6.1.2.18 Degree of staining after washing with detergent Prepare and wash the sample according to the conditions of Method A (1) in Table 2 of GB/T 3921-2008, and then filter with qualitative filter paper (medium speed) to remove impurities in the residual soap solution, and pour the filtered soap solution into a colorimetric tube with a diameter of 25 mm. 6.1.2.19 Pilling Carry out according to the provisions of parameter E in Table 1 of GB/T 4802.1-2008, the grading is based on the fabric style and pilling shape according to the requirements of GSB 16-1523. 8.1.1.1 If one or more items of internal quality do not meet the requirements of 5.2, the batch of products shall be judged as unqualified. Among them, if the color fastness item does not meet the requirements, the batch of products shall be judged as unqualified by color. 8.1.1.2 If the inspection results of the appearance quality after washing indicate that at least 2 pieces meet the requirements, the batch of products shall be judged as qualified, otherwise the batch of products shall be judged as unqualified. 8.1.3 Result judgment If the batch of products is qualified according to 8.1.1 and 8.1.2, it is judged as qualified. 8.2 Single piece judgment If the number of inspected products is lower than the number of sampling pieces for batch judgment, the internal quality and appearance quality shall be judged only for the inspected products according to 8.1, and shall be noted in the inspection report. 8.3 Others There shall be no defects that seriously affect the performance of wearing. 8.4 Re-inspection 8.4.1 If any party has objections to the inspection results, it may request re-inspection. 8.4.2 The re-inspection results shall be implemented in accordance with the provisions of 8.1, 8.2 and 8.3, and the judgment shall be based on the re-inspection results.9 Product instructions, packaging, transportation and storage9.1 Product instructions shall comply with the provisions of GB/T 5296.4, and children’s products shall comply with the provisions of GB/T 5296.4 and GB 31701. 9.2 Product packaging shall comply with the provisions of GB/T 4856 or agreements. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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