The light fastness of the masterbatch directly affects the fading of the product. The plastic packaging barrel is exposed to strong light when stored in the warehouse. The light fastness (light fastness) level requirement of the color masterbatch used is an important indicator. The light fastness level is poor. It will fade quickly during use. The light resistance grade selected for weather-resistant products should not be lower than six grades, preferably seven or eight grades, and indoor products can choose four or five grades. If necessary, improve the light resistance grade of the masterbatch, and add stabilizers such as ultraviolet absorption to the masterbatch. Or increase protective measures in the warehouse to minimize sun exposure.
https://www.fhpails.com/
