DIAB Divinycell H sandwich composite trailer

Innovative Carbon Fiber Sandwich Reefer Trailer from TTT - The Team Composite

TTT The Team Composite AG (Stade, Lower Saxony, Germany) is a highly skilled team of engineers who have developed innovative commercial vehicle solutions using carbon fiber reinforced plastics (CFRP). Two of its developments are already on the road – a tipper semi-trailer and mega curtain-sider trailer. Both of these developments have been well received and have won several design awards for technical innovation.

Following on from this success TTT has developed a reefer trailer that makes extensive use of carbon fiber sandwich composites based on Diab’s Divinycell H grade polymer cores. A prototype has already been built by Hatecke GmbH who is perhaps better known as one of the world’s leading producers of lifeboats and high speed rescue craft. Hatecke will also be fabricating the production versions of the trailer at its main production facility that is located in Drochtersen, Lower Saxony.

Many government bodies and freight organizations are convinced that this new trailer has the capability to make a substantial contribution to the reduction in the CO2 footprint of commercial vehicles. The development has already been recognized with TTT winning a JEC Innovation Award.

Aldi Sued, the pan-European supermarket chain, will be taking delivery of the first production versions of the trailer.

By choosing to produce the trailer chassis and deck in carbon fiber sandwich composites using infusion molding TTT has been able to substantially reduce the weight of the trailer while still meeting the required levels of strength and stiffness. With TTT’s optimized design the trailer is approximately 3,500 kg (3.85 US tons) lighter than an equivalent trailer made from steel. Also the design freedom provided by sandwich composites has allowed TTT to produce a more aerodynamic shape.

These two factors mean that the diesel consumption is cut by up to 25%, vehicle stability has been improved and life cycle costs have been reduced. Also total cargo volume has been increased by using a new kind of insulation that is embedded in a CFRP frame work and the cover sheets in the reefer body. Vehicle stability has also been improved. Other design features of the new trailer include integrated under run protection and under deck storage for up to 36 Euro pallets.


Louise Eriksson Jacka
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