The film-forming solution was applied onto a 21 cm * 30 cm casting plate at 10 g of total solids of dried films per plate to minimize thickness variations between formulations. The plates containing the film-forming solution were placed on a level surface and dried at 40 C until films could be peeled from the casting surface. All films were HPMC film (HPMC) and HPMC-based composite films (HPMC + Clay, HPMC + Beeswax and HPMC + Beeswax + Clay) and the final film thicknesses were 0.104 ± 0.002, 0.118 ± 0.003, 0.142 ± 0.005 and 0.115 ± 0.005, respectively.