Scope

This standard specifies the terms and definitions, classification and identification, technical requirements, test methods, inspection rules, markings, packaging, transportation, and storage requirements of Poly (Terephthalate) (PTT) bulk filament (BCF) This standard is applicable to natural color network polyethylene terephthalate extruded filaments with a linear density ranging from 1000 dtex to 2400 dtex, a trilobal cross-section, and glossy, semi dull, and fully dull properties This standard is applicable to natural color twisted and shaped polyethylene terephthalate extruded filaments with a linear density of 2200 dtex to 4000 dtex, a trilobal cross-section, and glossy, semi dull, and fully dull properties Other types of polyethylene terephthalate expanded filaments can be used as reference 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/T 250 Textile Color Fastness Testing - Grey Sample Card for Evaluating Discoloration

GB/T 2828.1-2012 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Plan for Batch Inspection Retrieved by Acceptance Quality Limit (AQL)

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

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

GB/T 4146 (All Parts) Textile Chemical Fibers

GB/T6502 Sampling Methods for Chemical Fiber Filaments

GB/T6503- Test Method for Moisture regain of Chemical Fibers

GB/T 6504 Test Method for Oil Content of Chemical Fibers

GB/T 6505 Test Method for Thermal Shrinkage of Chemical Fiber Filaments (After Treatment)

GB/T6508 Test Method for Dyeing Uniformity of Polyester Filament

GB/T 8170-2008 Rules for rounding off numerical values and expression and determination of limit values

GB/T 14343 Test Method for Linear Density of Chemical Fiber Filament

GB/T 14344 Test Method for Tensile Properties of Chemical Fiber Filament

GB/T 14345 Test Method for Twist of Chemical Fiber Filament

FZ/T50001 Test Method for Network Degree of Synthetic Fiber Filament

FZ/T 50008 Test Method for Dyeing Uniformity of Nylon Filament

FZ/T 50027, Test Method for Titanium Dioxide Content in Chemical Fibers

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