FZ/T 72026-2019 in English

VALID

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$136.00

Standard No:	FZ/T 72026-2019
Document status:	VALID
Title in English:	Elastic knitted fabrics for vamps
Title in Chinese:	鞋面用弹力针织布
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-12-24
Implemented on:	2020-07-01
ICS Classification:	59.080.30-Textile fabrics
Chinese Classification:	W62-Knitted grey fabrics
Professional Classification:	FZ-Textile
Related Keywords:	elastic fiber content fz/t single-layer product double-layer product spacer product bursting strength requirement vamps introduction analysis 16-2159 compliance implementation recommendations production process key control points color fastness system
Related Topics:	elastic knitted fabric National standard inspection of knitted fabrics

本标准规定了鞋面用弹力针织布的规格、分类、要求、抽样规则、试验方法、检验规则、产品使用说明、包装、运输和贮存。
本标准适用于以纺织材料为主要原料并加入弹性纤维，采用针织工艺生产的各种鞋类帮面用弹力针织布。
本标准不适用于年龄在36个月及以下的婴幼儿产品。

Introduction

Analysis of standard technical framework

Technical dimensions	Single-layer product	Double-layer product
Bursting strength requirement (N)	≥250	≥400
Abrasion resistance (dry grinding/times)	Front side ≥35,000 times Back side ≥25,000 times
Elongation deviation at fixed force	Vertical/lateral ≤±20%

The standard sets strict specifications for upper materials produced by circular knitting machines and other equipment:

Fiber content detection must comply with five supporting standards including GB/T 29862
Yellowing resistance test adopts HG/T 3689-2014 A method, and light-colored products are required to be ≥ Grade 4
Color fastness system includes 6 major tests, and dark-colored products are allowed to reduce their wet friction color fastness by half a grade

Compared with traditional shoe material standards, this standard innovatively introduces:

1. Special assessment indicators for products with spacer structure

2. Control requirements for elongation at constant force under dynamic load

3. Color depth grading system based on GSB 16-2159

Production process	Key control points	Testing methods
Raw material procurement	Verification of elastic fiber content	FZ/T 01095
Weaving process	Metric gram weight deviation ≤±5%	FZ/T 70010
Finishing	pH value 4.0-8.5	GB/T 7573