Active packaging plays a crucial role in the preservation and quality maintenance of food products throughout the supply chain. Active packaging solutions have been developed to extend the shelf life of perishable foods, including antimicrobial films, oxygen scavengers and moisture absorbers. A newly synthesized silver(I) complex, underwent screening for antibacterial and antioxidant activities, demonstrating its potential as an antimicrobial and antioxidant agent for packaging applications. Plastic films were produced with or without the inclusion of Ag(mbtt)3 using a twin-screw extruder and a blow film extruder. Two types of films were fabricated: a) an 80 μm film of Linear Low Density Polyethylene (LLDPE), and b) an 80 μm film comprising 99.5% LLDPE with 0.5% added complex. The LLDPE/Ag complex showed remarkable antimicrobial activity for the bacterium X. campestris compared to that which did not carry the complex. Both films were analyzed regarding water vapor permeability, thermal and mechanical properties and compared. In terms of thermal properties, the presence of Ag(mbtt)3 led to a slight increase in the melting temperature (Tm, °C) during heating, as well as in the crystallization enthalpy (ΔHc, J/g) of LLDPE. However, the mechanical properties of the films remained unaffected by the inclusion of the complex. Additionally, crystallinity and water vapor permeability showed no significant changes with the addition of the complex. These findings indicate that the synthesized complex could effectively serve as an active packaging agent in various applications, contributing to the extension of the shelf life and preservation of the quality of packaged products.