Update | sustainability
Norway’s TINE dairy adopts bio-based HDPE carton closure
Norway’s TINE dairy is the first company in Europe to use a bio-based version of Tetra- Pak’s Lightcap 30 closure for its Tetra Brik Aseptic (TBA) Edge cartons. The closure is produced in HDPE manufactured by Braskem of Brazil from sugar cane ethanol. It will be used on packaging for TINE’s vanilla sauce, iced coffee and chocolate milk drinks. “As one of Norway’s largest
users of packaging, it is important that we use our resources optimally and prioritise sustainability. This is a business imperative for us. Tetra Pak’s TBA Edge, which is
made from about 75% renewable resources, now comes with bio-based cap, offering us the opportunity to further enhance the environ- mental profile of our products”, says Björn Malm, sustainability manager at TINE.
TetraPak was one of the
first major packaging firms to adopt Braskem’s bio-based HDPE, which it manufactures from sugar cane ethanol at a plant at Triunfo in Brazil. The packaging giant committed back in 2011 to take 5,000
tonnes/year of the polymer for use in production of caps and closures, equivalent to around 5% of its HDPE requirement at the time. Nestle Brazil was one of the
first to use bio-based Stream- Cap closures on TBA packag- ing for its Ninho dairy brands. l Last month, TetraPak said it would also trial Braskem’s bio-based LDPE polymer when it comes on stream next year. It will use the polymer on a trial basis in its Brazilian carton plants, which have a total capacity of around 13bn units a year. ❙
www.tetrapak.com ❙
www.braskem.com.br
Mercedes drives for renewability
Mercedes Benz selected a 70% renewable content grade of EcoPaxx polamide 4,10 from DSM Engineering Plastics for production of the engine cover for petrol versions of its latest A-Class car.
The cover, which measures
575mm by 550mm, is produced in a glass fibre and mineral reinforced grade of EcoPaxx (Q-HGM24) and is injection moulded at the Bautzen-based Kunststoffwerk Neuteichnitz
Baier (KNB) subsidiary of BBP Kunststoffwerk Marbach Baier. Marbach, Germany-based
processing group BBP is an established manufacturer of automotive engine covers and has supplied around 40 projects to date in high flow PA6 resins.
BBP says the key require-
ments for the material were high surface quality, thermal stability to 220˚C (the compo- nent is positioned just 5cm from the turbocharger), good acoustic damping, and the ability to be ultrasonic welded. The EcoPaxx Q-HGM24 grade provides a heat deflection temperature under 1.8MPa loading of 200˚C, sufficient to withstand continuous use at
www.injectionworld.com
that temperature and short term exposure up to 235˚C, according to DSM. “EcoPaXX is 70% bio-based,
but its “green” credentials come at no cost to perfor- mance. It combines superb mechanical properties with excellent chemical resistance in various media. It also has the highest melting point of any bio-based aliphatic polyamide,” says Kees Tintel, EcoPaxx business manager at DSM.
The 1.32kg EcoPaxx part is moulded on a 1,300 tonne KraussMaffei injection moulding machine on a fully automated cycle of around one minute. ❙
www.dsmep.com
July/August 2013 | INJECTION WORLD 41
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