T/HNAS 002-2021 High-end bedding

Scope

This document specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation, and storage for high-end bedding products. This document applies to bedding products such as sets with 100% long-staple cotton or 100% silk fabrics as the outer and inner layers, and products filled with large goose down or 100% silk, including quilts (cores) and pillows (cores). This document does not apply to bedding products for infants and young children aged 36 months and below. Quality Requirements for Long-Staple Cotton Sets Serial No. Item Requirements 1 Fiber Content Complies with GB/T 29862 2 Formaldehyde Content a/ (mg/kg) Not detected 3 pH Value 5.5~7.5 4 Odor None 5 Wash Dimensional Change Rate /% -4.0~+2.0 6 Breaking Strength / N Warping: ≥1000 Weft: ≥450 7 Tear Strength / N ≥20 8 Pilling Grade ≥3 9 Air Permeability / (mm/s) ≥100 10 Drape Performance Drape Coefficient / % ≤56.0 Drape Wave Number / Pieces ≥7 11 Total Weft and Warp Density / (Roots/10 cm) ≥1200 12 Yarn Breaking Strength / (cN/tex) Warping: ≥22 Weft: ≥19 13 Yarn Line Density Warping: ≤6.0 tex×2 14 Sweat Resistance Fastness / Grade Discoloration: ≥4 Stain: ≥4 15 Soap Wash Fastness / Grade Discoloration: ≥4 Stain: ≥4 16 Liquid Stain Degree / Grade ≥4 (Dark: 3–4) 17 Friction Fastness / Grade Dry: ≥4 Wet: ≥3–4 (Dark: 3) 18 Light Fastness / Grade ≥4 Note: According to GB/T 4841.3 standard, colors darker than 1/12 dye standard depth are considered dark, and colors not darker than 1/12 dye standard depth are considered light. a The detection limit is 20 mg/kg. Quality Requirements for Silk Sets Serial No. Item Requirements 1 Fiber Content Complies with GB/T 29862 2 Formaldehyde Content a/ (mg/kg) Not detected 3 pH Value 5.5~7.5 4 Odor None 5 Wash Dimensional Change Rate /% -3.0~+2.0 6

Development Information

Related Standards