Chemical fibers are fibers with textile properties made from natural polymer compounds or artificially synthesized polymer compounds through processes such as preparing spinning solution, spinning, and post-processing. The length, thickness, whiteness, and luster of fibers can be adjusted during the production process. And they have advantages such as light resistance, wear resistance, easy washing and drying, non moldy and non insect infestation. Widely used in the manufacturing of clothing fabrics, filter fabrics, conveyor belts, water hoses, ropes, fishing nets, electrical insulation wires, medical stitching, tire curtain fabrics, and parachutes. Polymer compounds can generally be made into solutions or melts, pressed out of the fine holes of the spinneret, and then solidified into fibers. The product can be continuous filaments, short fibers cut into a certain length, or uncut tow. The trade name of chemical fibers is temporarily stipulated in China to be "nylon" (such as nylon and polyester) for synthetic short fibers, "fiber" for cellulose short fibers (such as viscose and copper ammonia fibers), and the word "silk" is added at the end of long fibers, or "nylon" or "fiber" is changed to "silk"

There are several types of conventional testing items for chemical fibers in general testing laboratories:

Linear density test: Chemical fiber filament linear density test method GB/T14343-2008

Single fiber number test: Determination of filament number in textile fiber yarns and multi fiber fabrics ABNTNBR15291-2005

Twist test: Chemical fiber filament twist test method GB/T14345-2008

Breaking strength and elongation at break Testing: Test method for tensile properties of chemical fiber filaments GB/T14344-2008

Moisture regain test: Test method for moisture regain of chemical fibers GB/T6503-2017

Oil content test: Test method for oil content of chemical fibers GB/T6504-2017

Heat shrinkage test: Test method for heat shrinkage of chemical fiber filaments (after treatment) GB/T6505-2017

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