Testing standards:
GB/T 250 Textiles - Color Fastness Test - Evaluation of Discoloration - Grey Sample Card GB/T 5706-1985 Textile Terminology (Wool Part)
GB 9994 Common Moisture regain of Textile Materials
GB 18401 National Basic Safety Technical Specification for Textile Products GB/T 29862 Identification of Textile Fiber Content FZ/T 20017 Wool Yarn Test Method
Terms and DefinitionsThe terms and definitions defined in GB/T 5706 and the following are applicable to this document p>
3.1
Sirofil woven wool yarn
A long filament is fed from the front draft area of the spinning frame (behind the front upper roller), and the short fiber strands that have been drawn meet downstream of the front roller jaws to form a twisted triangular area, which is then twisted and spun into a double stranded wool yarn for machine weaving.
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Technical Requirements
4.1 Safety Requirements
The safety technical requirements for Sirofil woven wool yarn should comply with the provisions of GB 18401.
. 4.2 Grading RegulationsThe quality of Sirofil woven wool yarn is evaluated on a batch basis based on the inspection results of internal quality and appearance quality, and the lowest one is graded. It is pided into first-class products, first-class products, and qualified products p>
4.3 Internal Quality Requirements
4.3.1 The evaluation of the internal quality of Sirofil woven wool yarn is based on the batch, and is comprehensively evaluated based on physical indicators and dyeing fastness, with the lowest one being rated.
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