1 Scope

This standard specifies the specifications, requirements, inspection rules, judgment rules, product instructions, packaging, transportation, and storage of warp knitted double needle bed velvet fabrics This standard is applicable to the evaluation of the quality of warp knitted double needle bed down fabrics for clothing and home textiles

2 Normative References

The following documents are essential for the application of this document.

. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document

GB/T 2910 (All Parts) Quantitative Chemical Analysis of Textiles

GB/T 2912.1 Textiles - Determination of Formaldehyde - Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method)

GB/T 3920 Textiles - Tests for Color Fastness to Rubbing

GB/T 3921-2008 Textiles - Tests for Color Fastness to Soap

GB/T 3922 Textiles - Test Method for Color Fastness to Sweat

GB/T 4669-2008 Textiles - Determination of Mass per Unit Length and Mass per Unit Area of Woven Fabrics

GB/T 4856 Packaging of Cotton Knitted Fabrics

GB5296.4 Instructions for Use of Consumer Goods - Part 4: Textiles and Clothing

GB/T 5713 Textiles - Color Fastness test - Color fastness to water

GB/T 6529 Textiles - Standard atmospheres for humidity control and testing

GB/T 7573 Textiles - Determination of pH value of water extraction solution

GB/T 8170 rounding rules and representation and determination of limit values

GB/T 8427-2008 Textiles - Color fastness test - Color fastness to artificial light: Xenon arc

GB/T 8628 Textiles - Preparation of fabric samples and clothing for testing dimensional changes Marking and Measurement

GB/T 8629-2001 Household Washing and Drying Procedures for Textile Testing

GB/T 8630 Textiles - Determination of Dimensional Change after Washing and Drying

GB 9994 Textile Materials - Determination of Fixed Moisture regain

GB/T 17592 Textiles - Determination of Prohibited Azo Dyes

GB 18401 National Basic Safety Technical Specifications for Textile Products

GB/T 19976-2005 Textiles - Determination of Breaking Strength - Steel Ball Method

GB/T 22846 Knitted Fabric (Quarterly) Appearance inspection

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

100% inspection and testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Testing and testing characteristics:

1. The testing industry is fully covered, meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China