Desiccant masterbatch is a type of additive used in the blow molding process to remove moisture from plastic materials and improve the quality of the final products. Moisture in plastic resins can lead to various problems, including reduced product transparency, surface defects, decreased mechanical properties, and poor processability.

In applications where transparency or clarity is crucial, such as beverage bottles and food packaging, desiccant masterbatch can enhance the optical properties of the plastic material by reducing haziness caused by moisture.