This standard specifies the product sizing, requirements, test methods, sampling rules, judgment rules, product instructions, packaging, transportation and storage of knitted thermal underwear.
This standard is applicable to quality identification for thermal underwear products made of knitted fabrics with an insulation rate of 30% or above.
This standard is not applicable to flocculent thermal underwear products.
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 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 - Testing method for colour 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 5453 Textiles - Determination of permeability of fabrics to air
GB/T 5713 Textiles - Tests for colour fastness - Colour fastness to water
GB/T 6411 A series of size of knitted underwear
GB / T 6529 Textiles - Standard Atmospheres for Conditioning and Testing
GB/T 7573 Textiles - Determination of pH of aqueous extract
GB/T 8629-2001 Textiles - Domestic washing and drying procedures for textile testing
GB/T 8878 Knitted cotton underwear
GB/T 11048-1989 Testing method for warmth retention property of textiles
GB/T 17592 Textiles - Determination of the banned azo colourants
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 31701 Safety technical code for infants and children textile products
FZ/T 01026 Textiles - Quantitative chemical analysis - Multinary 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
GSB 16-1523 Knitted fabric fuzzing and pilling sample photograph
GSB 16-2159 Knitwear standard depth scale (1/12)
3 Product specification
The product sizing of knitted thermal underwear shall comply with GB/T 6411, and the sizing beyond the standard range may be increased or decreased in sequence according to the grading principles specified in the standard.
4 Requirements
4.1 Specific requirements
FZ/T 73022-2019 The following standards are cited：
