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FZ/T 21004-2021 English PDF

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FZ/T 21004-2021: Domestic fine wool and its modified wool top
Status: Valid

FZ/T 21004: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
FZ/T 21004-2021	English	189	Add to Cart	3 days [Need to translate]	Domestic fine wool and its modified wool top	Valid	FZ/T 21004-2021
FZ/T 21004-2009	English	319	Add to Cart	3 days [Need to translate]	Domestic fine wool and its modified wool tops	Obsolete	FZ/T 21004-2009
FZ/T 21004-1998	English	319	Add to Cart	3 days [Need to translate]	Domestic fine wool and its modified tops	Obsolete	FZ/T 21004-1998

PDF similar to FZ/T 21004-2021

Standard similar to FZ/T 21004-2021

FZ/T 70009 FZ/T 20018 FZ/T 21006 FZ/T 21005 FZ/T 21002

Basic data

Standard ID	FZ/T 21004-2021 (FZ/T21004-2021)
Description (Translated English)	Domestic fine wool and its modified wool top
Sector / Industry	Spinning & Textile Industry Standard (Recommended)
Classification of Chinese Standard	W21
Word Count Estimation	8,816
Issuing agency(ies)	Ministry of Industry and Information Technology of the People's Republic of China

FZ/T 21004-2021: Domestic fine wool and its modified wool top

---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.
Domestic fine wool and its modified wool top ICS 59.060.10 W21 People's Republic of China Textile Industry Standard Replace FZ/T 21004-2009 Domestic fine wool and its improved wool top 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 21004-2009 "Domestic Fine Wool and Its Improved Tops". Compared with FZ/T 21004-2009, the main The technical changes are as follows. ---Modified the normative reference documents (see Chapter 2, Chapter 2 of the.2009 edition); ---Added the requirements for the classification of heterogeneous tops (see Table 1); --- Modify the technical requirements for coarse cavity gross rate and weight unevenness (see Table 2, Table 2 of the.2009 edition); ---Added requirements and test methods for alkylphenol polyoxyethylene ethers (see 4.3, 4.4, 5.2.4); ---Modified the test method of moisture regain (see 5.2.5, 5.4 of the.2009 edition); ---Added packaging requirements (see 7.1.2). This document was proposed by the China National Textile and Apparel Council. This document is under the jurisdiction of the Wool Textile Subcommittee of the National Textile Standardization Technical Committee (SAC/TC209/SC3). This document was drafted by. Shanghai Textile Group Testing Standard Co., Ltd., Lanzhou Sanmao Industrial Co., Ltd., Qinghai Fiber Inspection Bureau. The main drafters of this document. Liu Weiqing, Li Wenquan, Lu Yang, Tan Xiaoyi, Zheng Xia. The previous releases of this document and the documents it replaced are as follows. ---FJ423-1981; ---FZ/T 21004-1998, FZ/T 21004-2009. Domestic fine wool and its improved wool top

1 Scope

This document specifies the technical requirements, test methods, inspection rules, packaging, markings, etc. of domestic fine wool and its improved tops. This document is suitable for identifying the quality of domestic fine wool and its improved tops.

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 6500 Test method for moisture regain of plush fiber Oven method GB/T 6501 Wool fiber length test method carding method GB/T 9994 Textile Material Conventional Moisture Regain GB/T 10685 Wool fiber diameter test method Projection microscope method GB/T 23322 Determination of surface active agents for textiles-Alkylphenol and alkylphenol polyoxyethylene ether GB/T 24443 Tops, Washed Defects and Weight Test Method FZ/T 20002 Determination of fat content of wool textiles

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 Technical requirements

4.1 Classification and classification regulations 4.1.1 Domestic fine wool and its improved tops are divided into two types. homogeneous tops and heterogeneous tops. Homogeneous tops are based on the average fineness of wool According to the degree of classification, the heterogeneous wool tops are classified according to the coarse cavity wool rate of the wool. See Table 1 for details. Table 1 Classification and classification regulations Category Homogeneous Wool Classification Mark Average fineness range μm Classification of heterogeneous hair Coarse cavity gross rate Homogeneous wool 18 17.6~18.5 19 18.6~19.5 20 19.6~20.5 21 20.6~21.5 22 21.6~22.5 23 22.6~23.5 24 23.6~25.0 --

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