Teeth cut black tipping film is a specific type of black tipping film used in the manufacturing of paper bags. The term "teeth cut" refers to the serrated edge of the film, which resembles the edge of teeth. This type of edge provides a better grip on the paper bag, preventing the tipping film from slipping off the edge of the bag. The black color of the film is used for aesthetic purposes, as it provides a clean and professional look to the bag. Additionally, the film helps to reinforce the top edge of the paper bag, preventing tearing and fraying, which can improve its overall strength and durability.