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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces FZ/T 73032-2009 Knitted Jeanswear; the main technical changes have been made with respect to FZ/T 73032-2009:
——the application scope of this standard is modified (see Chapter 1; Chapter 1 in 2009 edition);
——the assessment indexes of bursting strength are adjusted (see Table 1; Table 1 in 2009 edition);
——the indexes of dimensional change rate in water washing are adjusted (see Table 1; Table 1 in 2009 edition);
——the indexes of spirality after water washing are adjusted (see Table 1; Table 1 in 2009 edition);
——the indexes of color fastness to saliva are deleted (see Table 1 in 2009 edition);
——the assessment indexes and test method of pilling are added (see Table 1 and 6.2.10);
——the indexes and test method of color fastness to soaping are added (see Table 1 and 6.2.14);
——the abrasion resistance index and test method are added (see Table 1 and 6.1.16);
——the assessment indexes and test method of appearance quality after washing are added (see Table 1 and 6.2.17);
——the assessment requirements for fiber content are modified (see Table 1; Table 1 in 2009 edition);
——the surface defect spot grading requirements are subdivided (see Table 2; Table 2 in 2009 edition);
——the assessment requirements for dimensional difference at symmetric parts are adjusted (see Table 3; 5.4.4 in 2009 edition);
——the test method for back crotch seam strength is modified (see 6.2.7; 6.2.2 in 2009 edition);
——the calculation formula for dimensional change rate in water washing is added (see 6.2.8.4);
——example for measuring parts of dress before and after water washing as well as that for measuring parts of dress in appearance quality are added (see Figures 3 and 10).
This standard was proposed by China National Textile and Apparel Council.
This standard is under the jurisdiction of the Technical Subcommittee on Knitwear of the National Technical Committee on Textiles of the Standardization Administration of China (SAC/TC 209/SC 6).
The previous edition replaced by this standard is as follows:
——FZ/T 73032-2009.
Knitted Jeanswear
1 Scope
This standard specifies the terms and definitions, product size, requirements, test methods, judgment rules, and instructions for use of products, packaging, transportation and storage of knitted jeanswear.
This standard is applicable to appraise the quality of knitted jeanswear.
This standard is not applicable to knitted jeanswear for infants aged 36 months and below.
2 Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change in Color
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 Color Fastness - Color 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 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 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 8878 Knitted Cotton Underwear
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 21196.2 Textiles - Determination of the Abrasion Resistance of Fabrics by the Martindale Method - Part 2: Determination of Specimen Breakdown
GB/T 29862 Textiles - Identification of Fiber Content
GB 31701 Safety Technical Code for Infants and Children Textile Products
FZ/T 01026 Textiles - Quantitative Chemical Analysis - Quaternary Fiber Mixtures
FZ/T 01031-2016 Knitted Fabric and Elastic Woven Fabric - Determination of Maximum Force to Seam Rupture and Elongation - Grab Method
FZ/T 01057 (All Parts) Test Method for Identification of Textile Fibers
FZ/T 01095 Textile - Test Method of Elastane Fiber Content
FZ/T 01101 Textile Test Method - Fiber Content - Quantitative Physical Analysis
FZ/T 80002 Marking, Packaging, Transportation and Storage for Garments
GSB 16-1523 Knitted Fabric Fuzzing and Pilling Sample Photograph
GSB 16-2500 Colorful Sample Photos of Surface Defect on Knitted Fabrics
3 Terms and Definitions
For the purposes of this document, the following term and definition applies.
3.1
knitted jeanswear
jeans-style water-washed garments produced with knitting method and woven jean dyeing process
4 Product Size
4.1 The size of knitted jeanswear shall comply with GB/T 1335 (all parts) or GB/T 6411.
4.2 The specifications of main parts of finished product are designed independently in accordance with the requirements of product style.
5 Requirements
5.1 Requirement contents
The requirements are divided into inherent quality requirements and appearance quality requirements. Inherent quality includes indexes such as formaldehyde content, peculiar smell, pH value, decomposable carcinogenic aromatic amine dyes, fiber content, bursting strength, back crotch seam strength, dimensional change rate in water washing, spirality after water washing, pilling, color fastness to water, color fastness to perspiration, color fastness to dry rubbing, color fastness to soaping, color fastness to light, abrasion resistance, appearance quality after washing, etc.; while appearance quality includes indexes such as surface defect spot, dimensional difference at symmetric parts, specification and dimension deviation at main parts of finished product, sewing requirements, etc.
5.2 Grading requirements
5.2.1 Knitted jeanswear is classified into high-grade product, first-grade product and acceptable product based on quality grade.
5.2.2 Quality grading of knitted jeanswear: inherent quality is graded by batch and appearance quality graded by piece, the minimum grade shall prevail while the above two methods are used in combination.
5.2.3 As for various indexes of inherent quality, the worst inspection result is used as the grading basis to this batch of products.
5.2.4 Appearance quality is graded according to the grades of surface defect spot, dimension difference in itself, specification and dimension deviation at main parts of finished product and sewing requirements, and the minimum grade shall prevail. Only two limit surface defect spots of the same grade are allowed to exist on the same product, those beyond the requirement shall be lowered by a grade.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Product Size
5 Requirements
6 Test Method
7 Judgment Rules
8 Instructions for Use of Products, Packaging, Transportation and Storage
Annex A (Normative) Sampling Parts for Back Crotch Seam Strength Test
