Foreword
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing document.
This document replaces GB/T 8878-2014 Knitted cotton underwear. In addition to editorial changes the following main technical changes have been made with respect to GB/T 8878-2014:
——The “Scope” has been changed (see Clause 1 hereof; Clause 1 of Edition 2014);
——The designation principle of sizing beyond the range has been added (see Clause 4 hereof; Clause 3 of Edition 2014);
——The assessment requirements for pilling have been added (see 5.2.1 hereof);
——The assessment requirements for dimensional change rate in water washing have been changed (see 5.2.1 hereof; 4.3.1 of Edition 2014);
——The assessment requirements for staining by washing liquor have been added (see 5.2.1 hereof);
——The assessment requirements for appearance quality after water washing have been added (see 5.2.1 hereof);
——The detailed requirements for bursting strength have been changed (see Footnote a to 5.2.1 hereof; 4.3.2 of Edition 2014);
——The detailed requirements for pilling assessment have been added (see Footnote b to 5.2.1 hereof);
——The detailed requirements for dimensional change rate in water washing have been changed (see Footnote c to 5.2.1 hereof; 4.3.3 of Edition 2014);
——The range of color fastness of natural-color or bleached products which is not assessed has been added (see Footnote d to 5.2.1 hereof);
——The detailed assessment requirements for staining by washing liquor have been added (see Footnote e to 5.2.1 hereof);
——The defect requirements for bonding technology in the provisions on surface defect grading have been added (see 5.3.1.1 hereof);
——The assessment requirements for color difference of acceptable products have been changed (see 5.3.1.1 hereof; 4.4.1.1 of Edition 2014);
——The requirements for straying end of products of plain color have been added (see 5.3.1.1 hereof; 4.4.1.1 of Edition 2014);
——The requirements for stitch dropping for the bottom edge have been changed (see 5.3.1.1 hereof; 4.4.1.1 of Edition 2014);
——The provisions on main and auxiliary fabrics of ready-to-wear garments have been added (see 5.3.1.1 hereof);
——Some assessment indicators of specification and dimension deviation have been changed (see 5.3.2 hereof; 4.4.2 of Edition 2014);
——Some assessment indicators of dimensional difference at symmetric parts have been changed (see 5.3.3 hereof; 4.4.3 of Edition 2014);
——The sewing regulations have been deleted (see 4.4.4 of Edition 2014);
——The requirements for test methods for pilling, staining by washing liquor and appearance quality after water washing have been added (see 6.1.2.7, 6.1.2.13 and 6.1.2.14 hereof);
——The test conditions of dimensional change rate in water washing have been changed (see 6.1.2.8.3.1 hereof; 5.1.2.7.3.1 of Edition 2014);
——The inspection conditions for appearance quality have been changed (see 6.2.1 hereof; 5.2.1.1 of Edition 2014);
——The figure of vest measurement parts has been added (see 6.2.2.3).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by China National Textile and Apparel Council.
This document is under the jurisdiction of SAC/TC 209 National Technical Committee on Textiles of Standardization Administration of China.
This document was issued in 1988 for the first time, its first revision was issued in 1997, second revision in 2002, third revision in 2009, fourth revision in 2014, and this is the fifth revision.
Knitted underwear
1 Scope
This document specifies the sizing, requirements, test, sampling rules, judgment rules, product instruction, packaging, transport and storage of knitted underwear.
This document is applicable to knitted underwear mainly made of knitted fabrics.
This document is not applicable to garments and adornments for infants and young children aged 36 months or below.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 250 Textiles - Tests for colour fastness - Grey scale for assessing change in colour
GB/T 251 Textiles - Tests for colour fastness - Grey scale for assessing staining
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 colour fastness - Color 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 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 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 8629-2017 Textiles - Domestic washing and drying procedures for textile testing
GB/T 14801 Test method for skewness and bow in woven and knitted fabrics
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
GB/T 38015 Textiles - Quantitative chemical analysis - Mixtures of elastane and certain other fibers
GSB 16-1523 Knitted fabric fuzzing and pilling sample photograph
GSB 16-2159 Knitwear standard depth scale (1/12)
GSB 16-2500 Color sample photos of surface defect on knitted fabrics
FZ/T 01026 Textiles - Quantitative chemical analysis - Mulitinary fibre mixtures
FZ/T 01057 (all parts) Test method for identification of textile fibers
FZ/T 01101 Textile test method - Fiber content - Quantitative physical analysis
3 Terms and definitions
No terms and definitions are listed in this document.
4 Sizing
The sizing of knitted underwear shall be as specified in GB/T 6411 or GB/T 1335 (all parts), and those beyond range may be increased or decreased in sequence according to the grading principles specified in the standard.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Sizing
5 Requirements
6 Test
7 Sampling rules
8 Judgment rules
9 Product instruction, packaging, transport and storage
