Highsun Synthetic Fiber Technologies Co., Ltd

Quality Control

Nylon chip:

Including raw material testing, ingredients testing, casual inspection during the production process.

Quantity index of Chips:relative viscosity(N.s/m2),moisture(ppm), amino(mmol/kg),TiO2 (%),oxidation(%).

Nylon yarn:

Filtering is to remove the tail of the yarn surface.

Appearance inspection, a preliminary screening of the yarn of the balance room to check whether the label information is in accordance with the yarn.

Testing items: fuzziness, coil, knock over, color, scratch, oil, molding, weight, paper tube.

Physical inspection

Test items: Denier, breaking strength, elongation, yarn irregularity, OPU%, BWS%,network, coefficient of variation(CV%)

Uster testing (Testing machine: Uster Tester 5-C800)


For spandex, we have appearance inspection and laboratory inspection. Appearance inspection the same to those testing steps of naylon mentioned above. The scope of laboratory test is as follows:

Static tensile properties

Dynamic elongation




Chlorine resistance




Oil content

Stability in dry and damp


  • Appearance inspection
    Appearance inspection
  • Denier testing
    Denier testing
  • Uster Tester 5-C800
    Uster Tester 5-C800
  • Woven socks
    Woven socks
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