This standard specifies terms and definitions, product classification, requirements, test methods, judgment rules as well as product instruction, packaging, transportation and storage.
This standard is applicable to appraise the quality of chemical fiber pressure socks and pressure socks interwoven of cotton (wool and chemical fiber blended yarn) and chemical fiber. Other fiber pressure socks may be referred to this standard.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigenda), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document applies.
GB/T 250 Textiles - Tests for Colour Fastness - Grey Scale for Assessing Change in Colour (GB/T 250-2008, ISO 105-A 02: 1993, IDT)
GB/T 251 Textiles - Tests for Colour Fastness - Grey Scale for Assessing Staining (GB/T 251-2008, ISO 105-A 03: 1993, IDT)
GB/T 2910 (All Parts) Textiles - Quantitative Chemical Analysis
GB/T 2912.1 Textiles - Determination of Formaldehyde - Part 1: Free and Hydrolized Formaldehyde (Water Extraction Method)
GB/T 3920 Textiles - Tests for Colour Fastness - Colour Fastness to Rubbing (GB/T 3920-1997, eqv ISO 105-X 12: 1993)
GB/T 3921 Textiles - Tests for Colour Fastness - Colour Fastness to Washing with Soap or Soap and Soda (GB/T 3921-2008, ISO 105-C10: 2006, MOD)
GB/T 3922 Textiles - Testing Method for Colour Fastness to Perspiration (GB/T 3922-1995, eqv ISO 105-E 04:1994)
GB/T 4856 Package of Cotton Goods and Knitwear
GB 5296.4 Instructions for Use of Products of Consumer Interest - Instructions for Use of Textiles and Apparel
GB/T 5713 Textiles - Tests for Colour Fastness - Colour Fastness to Water (GB/T 5713-1997, eqv ISO 105-E 01: 1994)
GB/T 7573 Textiles - Determination of pH of the Aqueous Extract (GB/T 7573-2002, ISO 3071: 1980, MOD)
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgment of Limiting Values
GB 18401 National General Safety Technical Code for Textile Products
GSB 16-2159-2007 Knitwear Standard Depth Scale (1/12)
FZ/T 01053 Textiles - Identification of Fiber Content
FZ/T 01057 (All Parts) Test Method for Identification of Textile Fibers
FZ/T 01095 Textile - Test Method of Elastane Fiber Content
3 Terms and Definitions
For the purpose of FZ/T 73031-2009, the following terms and definitions apply.
3.1
Pressure socks
The socks, with the pressure (mmHg) in the gradient decrease from the ankle to the sock top, which gives people a sense of pressure when wearing and a sense of relaxation during the movement.
