PE (polyethylene) filler masterbatch is a material used in the production of mulch films, which are agricultural films placed on the soil's surface to help improve crop yields and manage weed growth.

PE filler masterbatch can enhance the opacity of mulch films, reducing the penetration of sunlight and preventing weed growth underneath the film. It can also contain UV stabilizers to protect the film from UV degradation over time, extending its lifespan.

The addition of filler masterbatch can improve the tensile strength, tear resistance, and puncture resistance of mulch films. This makes the films more durable and less susceptible to damage during installation and use.