Borstar® Technology - Product Strengths   Overcoming Extrudability Limitations   The popularity of polyolefins traditionally comes from their attractive cost / performance ratio. In most applications, good mechanical properties come from high molecular weights.   A major challenge for polyolefin producers is to combine high mechanical strength and good processability, since high molecular weight alone generally leads to poor extrudability.   The Borstar® process can overcome the extrudability difficulty by tailoring the molecular structure to produce bimodal products.   More Value Added Qualities   Borstar® yields a number of special property and structural benefits. These include high environmental stress-cracking resistance (ESCR), low shrinkage and long-term creep/burst resistance.   The characteristics of bimodal PE compared to conventional processes are shown in the diagram below.   The Borstar® process offers simultaneous improvements in conversion economics and in key environmental aspects, such as source reduction and recyclability.