HunterLab Polyester Slicing YI Yellowness Index Meter

Polyester has a wide range of applications, including fibers, various containers, packaging materials, films, films, engineering plastics, and more. Because of this huge market, there are currently many manufacturers producing polyester chips in China, and of course, the competition is also very fierce. The yellowness index is an important indicator in our polyester chip production process.

The color effect of polyester comes from changes in some catalysts, extinction agents, and PTA raw materials. It will also be affected by changes in production processes. Once the yellowing of polyester chips increases, it will affect the quality of its later products, causing the fibers to turn yellow and affecting its appearance, especially in the case of degradation or discoloration caused by metal catalyst ions, which can easily increase viscosity during the spinning process and cause fluctuations in spinning production. Therefore, controlling the yellowing of polyester chips is very important.

Agera, The geometric structure of 0 °/45 ° circular reception is an optical geometric structure that can replicate the color perception of the human eye. Secondly, circular reception avoids the directionality of color measurement, providing testing accuracy and consistency. The instrument comes with a UV filter that provides UV testing and UV removal testing. Standard testing methods are provided for samples containing fluorescent substances. In addition, its light source has been upgraded to a full spectrum LED light source, which provides more stable light energy and excellent instrument repeatability. Secondly, the instrument provides a 60 degree gloss test, which complies with ASTM D523 and ISO2813 international standards. Agera is also equipped with a large touch screen that can be directly operated on the instrument. Its built-in 5-megapixel camera can assist you in placing samples more accurately and capturing images.