ExxonMobil introduces novel HDPE grade

ExxonMobil has developed a novel high density polyethylene (HDPE) grade, ExxonMobil HD7165L, for Machine Direction Oriented (MDO) PE film applications. Designed for recyclability, HD7165L can help converters create mono-material laminates to replace multi-material laminate structures which can be difficult to mechanically recycle. 

Offering optical properties and mechanical properties, ExxonMobil HD7165L is well suited to help enable mono-material laminated packaging that can be used to package products such as nuts, crackers, condiments, granola bars, and potato chips. 

Nilesh Savargaonkar, principal customer and application development engineer, ExxonMobil, said: ‘The development of new HD7165L has been driven by market demand from brand owners and processors looking to develop all-PE packaging which, in turn, has created a need for print webs made of blown MDO-PE films.’ 

ExxonMobil HD7165L can help enable converters to produce blown MDO-PE films with 60-70 percent HDPE for enhanced stiffness and high heat resistance. High output rates more than 400kg/hr are possible, while bubble stability is maintained. 

High MDO stretch ratios as high as 7:1, with high stiffness (1 percent secant modulus as high as >200 kpsi) can be achieved. The new grade offers haze less than ten percent and gloss higher than 60 percent. Used as a print web of a PE-PE laminate, ExxonMobil HD7165L offers high heat resistance, stiffness for a lack of extensibility, and printability. 

In blown MDO-PE film applications, ExxonMobil HD7165L offers high, uniform orientation, gauge stability, and low gels for easy processability.  

Compared to a market reference HDPE grade (density 0.962 g/cm³), ExxonMobil HD7165L (density 0.961 g/cm³) delivers better shear thinning behavior and extrudability, higher melt strength for bubble stability, excellent orientability, and gauge uniformity. 

‘Brand owners and the value chain globally have ambitious goals around the development of packaging that can be recycled,’ said Justin Schmader, CANUSA market development manager. ‘Our ongoing innovation to develop new  polyethylene grades that can help enable the creation of mono-material packaging structures is one step in helping them potentially achieve those goals.’