SG 80/24
China has issued an updated version of its national product standard for knitted t-shirts – GB/T 22849-2024. This revised standard will become effective on October 1, 2024.
The Standardization Administration of China issued national product standard GB/T 22849-2024 – Knitted T-shirt – as part of China’s No. 1 announcement on the approved national standards in 2024. The new standard replaces the previous version, GB/T 22849-2014, and will become effective on October 1, 2024.
Scope
This document is applicable to t-shirts made mainly from knitted fabrics. It is not applicable to knitted t-shirts intended for infants who are not older than 36 months.
Main physical and chemical contents
The document includes provisions relating to fiber content, formaldehyde content, pH value, decomposable carcinogenic aromatic amines, odor, bursting strength, dimensional change after laundering/drycleaning, spirality after laundering, colorfastness to washing with soap or soap and soda, colorfastness to water, colorfastness to perspiration, colorfastness to rubbing, colorfastness to artificial light, colorfastness to drycleaning, colorfastness to transfer in joints, colorfastness of textiles wetted with artificial perspiration (alkaline), washing solution staining, pilling and appearance after laundering/drycleaning. Knitted t-shirts intended to be worn by children from three years to 14 years must also comply with the requirements in GB 31701.
Main technical changes
Compared with GB/T 22849-2014, GB/T 22849-2024 contains many updates, including:
Additions:
- Term and definition for ‘fluorescence color’
- Labeling rule for over-range sizing systems
- Natural color or bleached products are not tested for colorfastness to washing with soap or soap and soda, colorfastness to water, colorfastness to perspiration, colorfastness to rubbing and colorfastness to drycleaning
- Requirements for children’s knitted t-shirts
- Requirements and explanation for dimensional change after drycleaning, colorfastness to drycleaning, and appearance after drycleaning
- Test method for dimensional change after drycleaning
- Test method for appearance after drycleaning
- Test method for colorfastness to drycleaninRequirements and explanation for washing solution staining
- Test method for washing solution staining
- Judgment rules for test results and assessment for single sample
Revisions:
- Requirements for appearance defects
- Requirements for instruction for use
- Requirements for dimension difference in symmetrical position
- Requirements for sewing area
- Test methods for colorfastness to transfer in joints
- First grade requirement for colorfastness to transfer in joints
- Test explanation for spirality after laundering
- Requirements for spirality after laundering
- Requirements for appearance after laundering
Deletions:
- Previous test method for colorfastness to transfer in joints (see GB/T 22849-2014, annex A)
- Requirements for colorfastness of printed (or pyrographic) area
Details of the technical content
For more information, please refer to the China National Standard GB/T 22849-2024 – Knitted T-shirt – or contact SGS directly.
China’s GB national standards set requirements for product quality, safety and performance. SGS Global Softlines’ global network, including 10 laboratories in China, offers a wide range of CNAS and CMA accredited services for textiles, apparel, footwear and accessories to help your company demonstrate compliance with Chinese requirements. Contact us for more information or visit our website. In the end, it’s only trusted because it’s tested.
