CAPS & CLOSURES | INNOVATION


LyondellBasell’s Hostalen 5231H has very good impact strength and high FNCT (Full-Notch Creep Test, ISO 16770) values, as well as much better ESCR than reference grades on injection moulded caps (aCN: Notched Charpy, ISO 179; atN: Notched tensile impact, ISO 8256)


of packaging contents (especially important for bottled water). At the same conference, LyondellBasell discussed the advantages of its Hostalen 5231H high density polyethylene for caps and closures. The company says the material’s “outstanding balance of stiffness, toughness and environ- mental stress cracking resistance make it the choice of customers for the production of closures for water, CSD and many other types of food and non-food caps and closures.” Hostalen 5231H is a bimodal grade with a narrow molecu- lar weight distribution, produced using what LyondellBasell describes as a new catalyst concept – a hybrid catalyst with two components in a single reactor set-up that allows for adjustment of short chain branching. The narrow MWD translates into low shrinkage and warpage, which facilitates capping operations. Hostalen 5231H is characterised by low processing temperature (180-210°C), which leads to energy saving and the potential to cut cycle time by up to 20%. The grade also has high flow that enables downgauging, while its tailored additive package is claimed to provide excellent organoleptic properties in high-throughput operations, as well as low opening torque for the convenience of end-users.


CLICK ON THE LINKS FOR MORE INFORMATION: � www.engelglobal.com � www.sumitomo-shi-demag.eu � www.arburg.com � www.husky.co � www.athenaautomation.com � www.milacron.com � www.kraussmaffei.com � www.sabic.com � www.lyondellbasell.com


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