The using of biopolymers as packaging materials is limited because they have low mechanical, thermal and barrier properties. This limitation can be eliminated by adding fillers to the biopolymers to prepare bionanocompo sites. In this study, PCL/HAL films were prepared by solvent casting method by mixing 0.5% (w/v) and halloysite (HAL) to pure PCL. Structural (ATR-FTIR and XRD), thermal (TGA) and mechanical (tensile strength, hardness) analysis were performed on these films. Tmelting, hardness and tensile strength of PCL/HAL films increased compared to pure PCL films. To investigate the antimicrobial effect of PCL films, boric acid, citric acid and ascorbic acid (% 0.25) were added to PCL/HAL films. The antimicrobial effect of these films was investigated against gram positive Staphylococcus aureus 29213 and gram negative Escheria coli 35218 bacteria. As a result of the antimicrobial activity test, it was observed that the amount of boric acid, citric acid and ascorbic acid added to the films did not show sufficient inhibition effect. As a result, the addition of HAL to pure PCL caused an increase in the mechanical properties of the films. Therefore it is thought to have potential to be used as packaging material.