The invention discloses an antibacterial food packaging film, which is made of the following raw materials in parts by weight: 60–70 parts of modified polypropylene, 2–3 parts of antibacterial agent, 1.8–2 parts of zinc stearate, and 0.5–0.7 parts of antioxidant. The processing technology of the food packaging film is as follows: Step 1: firstly preparing plastic masterbatch from 10% by weight of modified polypropylene, antibacterial agent and additives; Step 2: preparing the packaging film from the plastic masterbatch and the remaining modified polypropylene. By modifying polypropylene and preparing a composite antibacterial agent, the invention introduces acid chloride groups into the polypropylene molecular chain. The acid chloride groups have extremely high reactivity with -OH and can interact with unreacted -OH on the silica surface in the antibacterial agent, promoting the uniform dispersion of the antibacterial agent in the PP matrix to exert an antibacterial effect uniformly and stably. Moreover, the modified PP has a strong chemical bonding effect with the antibacterial agent, making the antibacterial agent molecules not easy to fall off and enhancing the antibacterial durability, which is suitable for food packaging.
Country Code: CN
Application Number: CN202010275522.8
