Why plastic transparent products turn yellow and how to improve?

Due to the high transmittance of transparent plastics, the requirements for plastic products are strict, and there should be no defects such as all patterns, air vents, whitening, halo, small black spots, color fading, and poor gloss. In the whole process of processing, we must pay great attention to and clearly put forward strict regulations on the design of raw materials, machinery and equipment, molds, and products.

Because transparent plastics often have high melting point and poor flowability, in order to ensure the process performance of the product, it is usually necessary to make small adjustments to the main processing parameters such as higher temperature, injection working pressure, injection rate, etc., so that the injection molding can be filled. It is not easy to cause thermal stress and cause product deformation and cracking.