T/JYBZ 019-2021 Technical Specifications for Standardized School Uniforms for Primary and Middle School Students

Scope

Scope: This document specifies the terms and definitions, product classification, requirements, test methods, inspection rules, and packaging, storage, and labeling for standardized school uniforms for primary and secondary school students. This document applies to standardized school uniforms and their accessories, which are primarily made of textile fabrics and worn by primary and secondary school students on a daily basis at school, including standardized shirts, jackets, trousers, skirts, sweaters, ties, bow ties, and collars. Other standardized student uniforms may be implemented as a reference. Main technical content: The assessment indicators in this document are divided into two aspects: internal quality and appearance quality. Internal quality includes fiber content, formaldehyde content, pH value, odor, decomposable carcinogenic aromatic dyes, combustion performance, sharpness of accessories, drawstrings, residual metal needles, color fastness (water resistance, sweat resistance, dry and wet friction resistance, soap washing resistance, lightfastness, and appearance after washing), degree of dye transfer in washing solution, pilling, seam strength, distortion after washing, appearance after washing, bursting strength, tear strength, dimensional change after washing, accessories, and high visibility warning. Appearance quality includes color difference, fabric surface defects, mutual deviation in symmetrical parts, stripe and grid alignment, zippers, waistbands, front and back crotches, ironing yellowing, ironing burning, zippers, buttons and buttonholes, seams, sleeve sewing, collars, pockets, shoulders, hemline, and parts covered by adhesive linings.

Development Information

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