General technical requirements for products with natural color cotton and mixture of natural color cotton
1 Scope
This document specifies the quality requirements, inspection rules, marking requirements, etc. for products with natural color cotton and products with mixtures of natural color cotton, and also describes the corresponding test methods.
This document is applicable to products with natural color cotton blended with other fibers.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions 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 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 - Color fastness to washing with soap or soap and soda
GB/T 3922 Textiles - Tests for colour 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 5713 Textiles - Tests for colour fastness - Color fastness to water
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 8427-2019 Textiles - Tests for color fastness - Color fastness to artificial light: Xenon arc
GB/T 8628 Textiles - Preparation, marking and measuring of fabric specimens and garments in tests for determination of dimensional change
GB/T 8629-2017 Textiles - Domestic washing and drying procedures for textile testing
GB/T 8630 Textiles - Determination of dimensional change in washing and drying
GB/T 17592 Textiles - Determination of the banned azo colourants
GB/T 17593.1 Textiles - Determination of heavy metals - Part 1: Atomic absorption spectrophotometry
GB 18401-2010 National general safety technical code for textile products
GB/T 19976-2005 Textiles - Determination of bursting strength - Steel ball method
GB/T 23344 Textiles - Determination of 4-aminoazobenzene
GB/T 24121 Textile products - Determination of the remains of broken sewing needle
GB/T 29862 Textiles - Identification of fiber content
GB 31701 Safety technical code for infants and children textile products
GB/T 42701 Textiles - Identification of naturally colored cottons - Chemical staining method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
natural color cotton
cotton with natural color cotton fibers
3.2
products with natural color cotton
fiber products with a natural color cotton fiber content of 30% or more
3.3
products with mixtures of natural color cotton
fiber products with a natural color cotton fiber content of less than 30%
4 Requirements
4.1 Color difference
The color difference of products with natural color cotton and products with mixtures of natural color cotton shall not be less than Grades 3-4.
Contents
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Instructions for use, packaging, transportation and storage
8 Others
Annex A (Normative) Test method for quantitative analysis of products with natural color cotton fibres blended with white cotton
