1 Scope

This standard specifies the terms and definitions, specifications, requirements, sampling, testing methods, judgment rules, product instructions, packaging, transportation, and storage of knitted yarn-dyed jacquard velvet fabrics.

This standard is applicable to the identification of weft knitted yarn dyed velvet fabrics interwoven with colored yarns and chemical fibers (yarns), as well as weft knitted yarn dyed velvet fabrics such as striped velvet fabrics and large cycle tuned velvet fabrics

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 modification orders) applies to this document

GB/T251 Textiles - Evaluation of Color Fastness - Grey Sample Card for Staining

GB/T2910 (All Parts) - Quantitative Chemical Analysis of Textiles

GB/T2912.1- Determination of Formaldehyde in Textiles - Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method)

GB/T3920 Textiles - Tests for Color Fastness to Rubbing

GB/T3921-2008 Textiles - Tests for Color Fastness to Soap

GB/T3922 Textiles - Test Method for Color Fastness to Sweat

GB/T4802.3 Textiles - Determination of Pilling and Pilling Performance of Fabrics - Part 3: Pilling Box Method

GB/T4856 Packaging of Cotton Knitted Fabrics

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

GB/T5713 Textiles - Color Fastness Test - Water Resistance

Color Fastness

GB/T7573 Textiles - Determination of pH Value of Water Extraction Solution

GB/T8170 Rules for Rounding off Values and Representation and Determination of Limit Values

GB/T8427-2008 Textiles - Tests for Color Fastness to Artificial Light - Color Fastness to Xenon Arc

GB/T8628 Textiles - Preparation of Fabric Samples and Clothing for Testing Dimensional Changes Marking and Measurement

GB/T8629-2001 Household Washing and Drying Procedures for Textile Testing

GB/T8630 Textiles - Determination of Dimensional Changes after Washing and Drying

GB/T17592 Textiles - Determination of Prohibited Azo Dyes

GB18401 National Basic Safety Technical Specification for Textile Products

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