Physico-Mechanical Properties of Filled Polyethylene Films

The mechanical, optical and electrical properties of low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) films with and without fillers have been studied. The variation of properties resulting from the addition of inorganic fillers included an increase in haze, diffusion of light, and tear strength for films made with both LDPE and LLDPE, while increasing the burst strength and elongation of the LDPE films only. The tensile strength, melt flow rate, and usually the seal strength were decreased with the addition of fillers. The coefficient of friction (COF) was decreased when silica or commercial grade mica were added to both LDPE and LLDPE films.