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In this standard, the products are divided into superior products, first-class products and qualified products according to GB/T 12707-1991 Directives for the Grading of Industrial Product Quality. According to the product characteristics, fiber content deviation, dry weight deviation per square meter, marble bursting strength, dimensional change rate in water washing, color fastness and appearance quality are assessed in this standard.
This standard was proposed by State Bureau of Textile Industry.
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.
Finished Knitted Fabric
1 Scope
This standard specifies the specification, requirements, appearance quality inspection, test methods, inspection rules and product marking of finished knitted fabric
This standard is applicable to bleached and dyed, printed and yarn-dyed warp and weft knitted fabric, excluding polyester knitted fabric, wool knitted fabric and silk knitted fabric.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, all the editions listed are valid. All standards are subject to revision, and all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these standards apply.
GB 250-1995 Gray Scale for Assessing Change in Color
GB 251-1995 Gray Scale for Assessing Staining
GB/T 2910-1997 Textiles - Binary Fibre Mixtures - Quantitative Chemical Analysis
GB/T 2911-1997 Textiles - Ternary Fiber Mixtures - Quantitative Analysis
GB/T 3920-1997 Textiles - Tests for Color Fastness - Color Fastness to Rubbing
GB/T 3921.3-1997 Textiles - Tests for Color Fastness to Washing: Test 3
GB/T 3922-1995 Textiles - Tests for Color Fastness - Color Fastness to Perspiration
GB/T 4667-1995 Textiles - Woven Fabrics - Measurement of Width of Pieces
GB 5296.4-1998 Instructions for Use of Products of Consumer Interest - Instructions for Use of Textiles and Apparel
GB/T 8170-1987 Rules for Rounding off of Numerical Values
GB/T 8628-1988 Textiles - Preparation, Marking and Measuring of Fabric Specimens and Garments in Tests for Determination of Dimensional Change
GB/T 8629-1988 Textiles - Domestic Washing and Drying Procedures for Textile Testing
GB/T 14801-1993 Test Method for Skewness and Bow in Woven and Knitted Fabrics
FZ/T 73011-1998 Knitted Binder
3 Specification
The specification of the finished knitted fabric is written as: yarn linear density × dry weight per square meter × width, where, the linear density is expressed in Tex, if the yarns with different specifications are interwoven, they shall be arranged based on the proportion from large to small, with a multiple sign among them; the dry weight per square meter is expressed in grams; the width refers to the width for a single layer, expressed in centimeters.
4 Requirements
4.1 The quality of finished knitted fabric includes inherent quality and appearance quality. The requirements for inherent quality are shown in Table 1, including 5 items, i.e. fiber content deviation, dry weight deviation per square meter, marble bursting strength, dimensional change rate in water washing and color fastness; the requirements for appearance quality are shown in Table 2, including 7 items, i.e. local defects, scattered defects, width deviation, grain skew, color difference with the standard specimen, color difference of the same roll and color difference of the same batch. Local defects are counted in the unit of piece, and the limit requirements for each piece ar shown in Table 3.
4.2 Finished knitted fabric is in the unit of roll and is classified into superior products, first-class products and qualified products according to the assessment on the lowest item in inherent quality and appearance quality.
4.3 The inherent quality is graded by batch according to the assessment on the lowest item of the five; the appearance quality is graded by roll according to the assessment on the lowest item of the seven.
