This standard specifies the specification, requirements, test, judgment rules, product instruction, packaging, transportation and storage of knitted mask.
This standard is applicable to identify the quality of mask mainly made of knitted fabric.
This standard is not applicable to surgical mask and labor protection mask. This standard is not applicable to the garment for infants of 36 months or below.
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 - Tests for colour fastness - Colour fastness to perspiration
GB/T 4856 Package of cotton goods and kintwear
GB 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 7573 Textiles - Determination of pH of aqueous extract
GB 9994 Conventional moisture regains of textile materials
GB/T 17592 Textiles - Determination of the banned azo colourants
GB 18401 National general safety technical code for textile products
GB/T 18886 Textiles - Tests for fastness - Colour fastness to saliva
GB/T 29862 Textiles - Identification of fiber content
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
GSB 16-2500 Color sample photos of surface defect on knitted fabrics
3 Specification
The main specification of knitted mask is expressed as: length×width, where, the length and width are expressed in centimeter.
4 Requirements
4.1 Requirement content
The requirements consist of inherent quality and appearance quality. Inherent quality includes pH value, formaldehyde content, peculiar smell, decomposable carcinogenic aromatic amine dye, fiber content, color fastness to washing with soap, color fastness to water, color fastness to saliva, color fastness to rubbing, color fastness to perspiration, air permeability and other indicators; appearance quality includes surface defect, sewing requirements and other indicators.
