The State Administration of Supervision approved the release of 5 national standards in the field of chemical fiber

admin — Fri, 29 Jul 2022 08:38:15 +0000

Latest News: Recently, according to the Announcement No. 6 of 2022 issued by the State Administration for Market Regulation (National Standardization Administration), GB/T
14337-2022 “Test method for tensile properties of chemical fiber staple fibers”, GB/T 14338-2022 “Test method for crimp performance of chemical fiber staple fibers”, GB/T
14344—2022 “Test method for tensile properties of chemical fiber filaments”, GB/T
14463-2022 Four standards of “Viscose Staple Fiber” are released, which will be implemented from November 1, 2022;
The 41671-2022 “Determination of Chemical Fiber Solvent Residues” standard was released, which will be implemented on February 1, 2023.

GB/T 14337—2022 “Test methods for tensile properties of chemical fiber staple fibers”

This document describes the testing of individual fiber tensile properties of manmade staple fibers. This document applies to chemical staple fibers with a nominal length of not less than 20 mm.

Shanghai Textile Industry Technical Supervision Institute, Guangzhou Inspection and Certification Group Co., Ltd., Xiamen Xianglu Chemical Fiber Co., Ltd. and other units are responsible for drafting.

GB/T 14338—2022 “Test method for crimping properties of chemical fiber staple fibers”

This document describes a test method for the crimp performance of manmade staple fibers. This document applies to manmade staple fibers.

Shanghai Textile Industry Technical Supervision Institute, Sinopec Shanghai Petrochemical Co., Ltd., Ningbo Dafa Chemical Fiber Co., Ltd. and other units are responsible for drafting.

GB/T 14344—2022 “Test methods for tensile properties of chemical fiber filaments”

This document describes test methods for tensile properties of manmade fiber filaments. This document applies to chemical fiber filaments, excluding spandex and carbon fibers.

Shanghai Textile Industry Technical Supervision Institute, Jiangsu Hengli Chemical Fiber Co., Ltd., Suzhou Shenghong Fiber Co., Ltd. and other units are responsible for drafting.

GB/T 14463—2022 “Viscose Staple Fiber”

This document specifies the classification and identification, technical requirements, test methods, inspection rules and marks, packaging, transportation and storage of viscose staple fibers. This document is applicable to the linear density of 0.66～6.67 produced with cotton pulp and wood pulp as raw materials
The natural color of dtex is glossy viscose staple fiber. Other raw materials and specifications of viscose staple fiber refer to use.

Weifang Xinlong Biomaterials Co., Ltd., Tangshan Sanyou Group Xingda Chemical Fiber Co., Ltd., Shandong Yinying Chemical Fiber Co., Ltd. and other units are responsible for drafting.

GB/T 41671—2022 “Determination of Solvent Residues in Chemical Fibers”

This document describes the test methods for the residues of 7 kinds of organic solvents (see Appendix A) and 2 kinds of inorganic solvents (sodium thiocyanate, concentrated sulfuric acid) in chemical fibers. Appendix B gives the test method for solvent residues in wet-spun UHMWPE fibers. This document applies to some solution spinning chemical fibers, including spandex, acrylic, polyimide, meta-aramid, polyvinyl alcohol, ultra-high molecular weight polyethylene, lyocell, and polyacrylonitrile-based carbon fibers. Silk, para-aramid. Other solution spinning chemical fibers can be used for reference.

Shanghai Textile Industry Technical Supervision Institute, Shanghai Textile Group Testing Standards Co., Ltd., Nantong Fiber Inspection Institute and other units are responsible for drafting.

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The State Administration of Supervision approved the release of 5 national standards in the field of chemical fiber