Scope

This standard specifies the terms and definitions, technical requirements, test methods, inspection rules, packaging, and marking of self combing outer wool tops. This standard is applicable to identifying the quality of self combing outer wool tops The following documents are essential for the application of this document. All dated references. The dated version only applies to this document. For undated references, the latest version (including all amendments) applies to this document

GB/T 3291.1 Terminology for Performance and Testing of Textile Materials - Part 1: Fibers and Yarns

GB/T 3291.3 Terminology for Performance and Testing of Textile Materials - Part 3:, General

GB/T 6500 Test Method for Moisture regain of Plush Fibers - Oven Method

GB/T 8170 Rules for Rounding off Values and Representation and Determination of Limit Values

GB/T 10685 Test Method for Wool Fiber Diameter - Projection Microscopy Method

GB/T 21293 Method for Determination of Fiber Length and Distribution Parameters - Almite Method

GB/T 2322 Determination of Textile Surfactants - Alkylphenol and Alkylphenol Polyoxyethylene Ether

GB/T 24443 Wool Top, Cleaning of wool defects and weight test methods

FZ/T 20002 Determination of oil content in wool textiles

Terms and definitions

GB/T 3291.1. The terms and definitions defined in GB/T 3291.3 are applicable to this document

Technical Requirements

1.1 Grading Regulations

4.1.1

The self combed outer wool top is classified according to the fineness of the wool, and the specifications are represented by 13.5 pm.14.5 pm.15.5 pm, etc Example: A fineness specification of 14.5 pm indicates an average fineness range between 14.1 pm and 15.0 pm When the average fineness of the wool top does not meet the specified index range, it should be adjusted according to its corresponding fineness

4.2 Grading Regulations

4.2.1 The grade of the self combed outer hair top shall be comprehensively evaluated based on its physical indicators and inspection results of appearance defects. The lowest item shall be rated at

level. It shall be pided into two crystal grades: first and second, and products below second grade shall be considered as substandard products 4.2.2 The unit weight and unit weight tolerance of wool tops are guarantee conditions for the production factory. Those that do not meet the regulations should be treated as substandard products. Both supply and demand

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