Standard No.:	GB/T 21977-2022
English Name:	Camel hair
Chinese Name:	骆驼绒
Chinese Classification:	W10    Cotton textile in general
Professional Classification:	GB    National Standard
ICS Classification:	59.060.10 59.060.10    Natural fibres 59.060.10
Source Content Issued by:	SAMR; SAC
Issued on:	2022-7-11
Implemented on:	2023-2-1
Status:	valid
Superseding:	GB/T 21977-2008 Camel wool
Target Language:	English
File Format:	PDF
Word Count:	7500 words
Translation Price(USD):	225.0
Delivery:	via email in 1 business day

GB/T 21977:2022 Camel hair 1 Scope This document specifies the technical requirements, test methods, inspection rules, packaging, marking, storage and transportation for camel hair. This document is applicable to raw camel hair, scoured camel hair and dehaired camel hair. 2 Normative references The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6500 Test method for moisture regain of hair fibers - Oven method GB/T 6529 Textiles - Standard atmospheres for conditioning and testing GB/T 6977 Test method for ethanol extractives, ash, vegetable matter, total ali-insoluble impurities in scoured wool GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 10685 Wool - Determination of fiber diameter - Projection microscope method GB/T 21030 Test method for the mean and distribution of fibre diameter of wool and other animal fibre - Optical Fibre Diameter Analyser (OFDA) GB/T 35935 Measurement of the mean and distribution of animal fibre diameter - Laserscan fibre diameter analysis method GB/T 40826 Test method for hand-arranging staple length of dehaired cashmere - Flatbed scanner method 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 camel hair hair fibers obtained from camels Note: raw camel hair, scoured camel hair and dehaired camel hair are included, among which those with diameter of 40μm and below belong to hair fibers.   3.2 raw camel hair unprocessed hair fibers that are naturally shed or collected from camels 3.3 scoured camel hair raw camel hair that meets certain quality requirements after being scoured 3.4 dehaired camel hair camel hair from which a large amount of course hair and foreign matters have been removed after washing and industrial dehairing 3.5 coarse camel hair fibers in camel hair with a diameter exceeding 40μm 3.6 heterotypical camel hair fibers in camel hair with a diameter of 40μm or less at one end and 40μm or more at the other end Note: any fiber with one end having a diameter of 40μm or less and a length of more than one-half of the total length of the fiber is recorded as hair (fiber). 3.7 mane on upper legs, neck-to-chin and shoulders coarse long hair fibers collected from upper legs, neck-to-chin and shoulders of camels 3.8 coarse camel hair content percentage of fibers with a diameter greater than 40μm in dehaired camel hair (including any heterotypical fiber with a diameter greater than 40μm at one end and a length exceeding half of the total length of the fiber) to the total mass 3.9 foreign content percentage of dander, soil and sand, plant material and other foreign matters picked out by physical method to the total mass of camel hair samples 3.10 short camel hair content percentage of the number of hair fibers with a length of 20mm or less to the total number of fibers in the pure camel hair 3.11 yield percentage of the conventional mass of scoured raw camel hair to the mass of the raw camel hair prior to scouring

Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 5 Test methods 6 Sampling methods and inspection rules 7 Inspection report 8 Packaging, marking, storage and transportation