(Plastics Today) -- Total Petrochemicals has shared some details on a new SB 1461 grade of high-density polyethylene that is formulated to run at better than 1700 bottles/cavity/hour rates, on Sidel's stretch blowmolding (SBM) machinery.
According to Total, trials with HDPE SB 1461 on different equipment from Sidel have been performed with positive results. Total says the stretch blowmolded HDPE bottles show a clear increase of rigidity in comparison to extrusion blowmolded ones. This rigidity combines with drop test resistance to allow for further down gauging, so that HDPE dairy bottles produced by SBM can be about 20% lighter than extrusion blowmolded dairy bottles currently in commercial use.
In addition, reports Total, high definition mold engraving even improves the design flexibility and bottle look.
The newly developed grade is compatible with the established HDPE recycling stream. The grade is targeted especially towards dairy and other food/beverage applications but Total says it already is working on a new HDPE grade with the necessary Environmental Stress Crack Resistance (ESCR) for household chemicals and personal care packaging.