The raw material structure of polyester short fibers is short and woolly, while the raw material structure of polyester long fibers is long and smooth. After twisting, the breaking strength of polyester long fibers is higher than that of short fibers. Due to the smoothness of the material, the woven product has good breathability, while polyester short fibers have dense and poor breathability due to the raw material being woolly

Testing items

Network degree, breaking elongation, breaking strength, appearance inspection, cylinder weight, cylinder weight test, linear density unevenness

Testing standards

Polyester drafting silk GB/T8960-2015 6.2

Polyester drafting silk GB/T8960-2015

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

Function of testing report:

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100% inspection and testing process:

1. Telephone communication and confirmation of requirements

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6. If urgent or priority processing is required

Testing and testing characteristics:

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

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