Cost Effective Co-extruded Film Structures with Improved Tear and Optical Properties Using sLLDPE Resins, 2014 PLACE Conference

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Single-site catalyzed octene linear low density polyethylene (sLLDPE) resins possess unique properties. The films blown from these resins at higher draw-down ratios and thinner gauges show increased the machine direction (MD) and the transverse direction (TD) tear resistance. This attribute can be exploited to construct cost-effective co-extruded film structures having improved tear and optical properties. The present study shows that the co-extruded structures designed using sLLDPE resins in combination with lower cost PE resins allow for the production of cost effective films with enhanced properties. These films show synergy in tear resistance and optical properties over the control films made from the individual resins. Further, blending LDPE in the layers for improved processability can be achieved without significantly sacrificing the film properties.