GB/T 22856-2018 in English

VALID

Gambiered canton silk fabrics

Issued on:2018-12-28
Implemented on:2019-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 22856-2018
Document status:	VALID
Title in English:	Gambiered canton silk fabrics
Title in Chinese:	莨绸
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-12-28
Implemented on:	2019-07-01
Superseding:	GB/T 22856-2009 Gambiered canton silk
ICS Classification:	59.080.30-Textile fabrics
Chinese Classification:	W43-Silk and silk textile products
Professional Classification:	GB-National Standard
Related Keywords:	gambiered canton silk fabrics introduction in-depth analysis mulberry silk fabrics silk analysis 22856-2018 silk tussah silk
Related Topics:	Poison Ranunculus GBT22856 GB/T 22856-2009 GB/T 22856-2018 Ranunculus silk gb/t 22856

《GB/T 22856-2018莨绸》由TC401（全国丝绸标准化技术委员会）归口，主管部门为中国纺织工业联合会。

Introduction

In-depth analysis of GB/T 22856-2018 national standard for silk

Analysis of the background of standard formulation and technological evolution

GB/T 22856-2018 Silk is a revision of the original GB/T 22856-2009 version, mainly for the quality assessment of mulberry silk fabrics and their products. This revision has expanded the scope of application of tussah silk and added a number of technical indicators, including tear strength, dry cleaning dimensional change rate and dry cleaning color fastness.

The new standard also adjusts the classification of internal quality and appearance quality, which is specifically reflected in Table 1 and Table 2. These changes are intended to more comprehensively reflect the quality characteristics of silk and align with international standards.

Item	Superior product	First grade product	Second grade product
Breaking strength (N)	200	150	120
Tolerance of fiber content (%)	In line with GB/T 29862 requirements
Color fastness/Grade M	4	3-4	3

Comparison of intrinsic quality requirements and technical indicators

According to Table 1, the intrinsic quality of silk is divided into seven key indicators: breaking strength, fiber content tolerance, slippage degree, tear strength, dimensional change rate after washing, dimensional change rate after dry cleaning and color fastness. Among them, color fastness is the most stringent, and the first-class products must reach color change level 4 and staining level 4.

Actual application case

For example, when testing color fastness to dry cleaning, the GB/T 5711 method is used. After a batch of tussah silk was dry-cleaned with tetrachloroethylene, there was no obvious color change, which met the requirements of first-class products.

Appearance Quality Assessment and Scoring Standards

Appearance quality includes three indicators: color difference, width deviation rate and appearance defects. According to Table 2, the color difference requirement for superior products is 4 levels, and the width deviation rate is ±2.0%.

Items	Superior Products	First-class Products	Second-class Products
Color Difference (Compared with Standard Sample)/Grade	4	3-4	3

Technical Evolution Analysis and Implementation Suggestions

Compared with the old standard, GB/T 22856-2018 mainly increases the scope of application of tussah silk, and adds tear strength, dry cleaning dimensional change rate and dry cleaning color fastness. These changes make the standard more comprehensive and more in line with the needs of the modern silk industry.

Implementation Suggestions

Enterprises should adjust their testing processes according to the new standards to ensure that product quality meets the standards.
It is recommended to strengthen employee training, especially the understanding and operation specifications of the newly added indicators.
During the production and inspection process, focus on monitoring key indicators such as color fastness and dimensional change rate.

More samples: DL/T 368-2010 GB 18306-2015 QC/T 942-2021

Sample only — not a preview of GB/T 22856-2018