FZ/T 12023-2021 English PDF

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FZ/T 12023-2021: Meta-aramid fiber grey yarn
Status: Valid

FZ/T 12023: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
FZ/T 12023-2021	209	Add to Cart	3 days	Meta-aramid fiber grey yarn	Valid
FZ/T 12023-2011	519	Add to Cart	3 days	Poly-m-phenylene isophthalamide spun grey yarns	Obsolete

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FZ/T 12018   FZ/T 01085   FZ/T 10007   FZ/T 12022   FZ/T 12032   FZ/T 12029   

Basic data

Standard ID: FZ/T 12023-2021 (FZ/T12023-2021)
Description (Translated English): Meta-aramid fiber grey yarn
Sector / Industry: Spinning & Textile Industry Standard (Recommended)
Classification of Chinese Standard: W12
Word Count Estimation: 9,997
Issuing agency(ies): Ministry of Industry and Information Technology of the People's Republic of China

FZ/T 12023-2021: Meta-aramid fiber grey yarn

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Meta-aramid fiber grey yarn ICS 59.080.20 W12 People's Republic of China Textile Industry Standard Replace FZ/T 12023-2011 Meta-aramid natural yarn Released on 2021-04-19 2021-07-01 implementation Issued by the Ministry of Industry and Information Technology of the People's Republic of China

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces FZ/T 12023-2011 "Aramid 1313 Natural Yarn", compared with FZ/T 12023-2011, the main technical changes as follows. ---The file name is adjusted to "Meta-aramid Natural Yarn"; ---Increase the evaluation index of the linear density range of meta-aramid natural yarn "6.0tex~6.9tex" and "7.0tex~7.9tex" (see Table 1); ---The single yarn index adds the "kilometer neps (200%)" assessment item, and the strand index adds the "twist variation coefficient" assessment item (See Table 1, Table 2,.2011 Edition of Table 1, Table 2); ---Adjusted the single yarn breaking strength and the variation coefficient of single yarn evenness. (See Table 1, Table 2,.2011 Edition of Table 1, Table 2); --- Deleted the technical requirements for aramid 1313 fiber (cotton type) natural yarn (see Table 3 and Table 4 of the.2011 edition); --- The sampling regulations have been deleted, and the number and frequency of tests shall be implemented in accordance with the requirements of each test method (see Table 5 in the.2011 edition); ---Deleted the numerical rounding rules for calculated values (see Table 6 of the.2011 edition); ---The informative appendix A of the original document was deleted, and appendix B of the original document was adjusted to appendix A of the current document. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China National Textile and Apparel Council. This document is under the jurisdiction of the Cotton Textile Subcommittee of the National Textile Standardization Technical Committee (SAC/TC209/SC10). Drafting organizations of this document. Dezhou Huayuan Ecological Technology Co., Ltd., Beijing Bangweiputai Protective Textile Co., Ltd., Beijing Intratech Co., Ltd., Yantai Taihe New Material Co., Ltd., Zhejiang Jiushun Textile Co., Ltd., Changshu Baofeng Special Fiber Co., Ltd., Anhui Junhan Textile Technology Co., Ltd., Anhui Hanlian Mélange Co., Ltd., Anhui Hengshuo Textile Co., Ltd., Shanghai Textile Industry Technology Supervision Office, China Cotton Textile Industry Association. The main drafters of this document. Li Xiangdong, Wang Lijun, Jing Jing, Ding Zhixin, Zhou Xubo, Hu Weijun, Wang Xinhua, Zhang Yi, Zhang Heng, Song Juan, Duan Lihui and Li Jiguo. The previous versions of this document and the documents replaced are as follows. ---FZ/T 12023-2011. Meta-aramid natural yarn

1 Scope

This document specifies the terms and definitions, product classification, marking, requirements, test methods, inspection rules and signs, package. This document is applicable to ring-spun natural yarns produced with medium and long meta-aramid staple fibers.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 2543.1 Determination of yarn twist in textiles Part 1.Direct counting method GB/T 3292.1 Textile yarn unevenness test method Part 1.Capacitance method GB/T 3916 Determination of breaking strength and breaking elongation of single yarn of textile package yarn (CRE method) GB/T 4743-2009 Determination of the linear density of the skein of the textile package yarn GB/T 8170 Numerical rounding rules and the expression and determination of limit values FZ/T 01050 Classification and Inspection Method of Textile Yarn Defects Capacitive Type FZ/T 10007 Cotton and chemical fiber pure spinning, blended natural yarn inspection rules FZ/T 10008 Cotton and chemical fiber pure and blended yarn marking and packaging

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Meta-aramidfiber Polymeta-xylylene isophthalamide fiber. Aramid 1313 A linear macromolecule composed of amide groups connected to the meta-benzene ring, in which at least 85% of the amide bonds are directly connected to the two benzene rings Between between. [Source. GB/T 31889-2015, 3.1] 3.2 Thermalstability Changes in the shape of the yarn under the influence of a certain temperature.

4 Product classification and marking

4.1 Meta-aramid natural yarns are classified in different linear densities. 4.2 The raw material code of meta-aramid natural yarn is FL1313. ......

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