Since recently, the Cargo Centre has been the heart of logistics on the exhibition premises in Frankfurt. “We have chosen the technology with utmost care”, says Oliver Schell. “As far as the doors are concerned, we have decided for Efaflex products. Doors are the strategically most critical spot in the Cargo Centre.” The construction department of the trade fair company had already fared well with these high-speed doors. The specifications which were to comply with by the door specialist from Bruckberg (Lower Bavaria) were nevertheless quite numerous. High reliability, fast opening and closing as well as the possibility to adjust the door design to the architectural concept of the building – these were only some of the selection criteria. The trial operation of the new Cargo Centre took place during the IAA 2007. “During this event, 25,000 m³ of empties were stored in the hall. During the Heimtextil fair, we had 200 tons of piece goods there”, says Oliver Schell. Such quantities of empties must be distributed smoothly to the stands, immediately after the end of the fair and within just a few hours. If something gets stuck, this causes expensive waiting times for exhibitors and forwarders. Therefore, the highest level of reliability was important for the planners, and the manufacturer had to guarantee that the doors can also be opened if electronic equipment or power fails. In the beginning, until everything was configured correctly, there had been some minor doubts. “But during operation, we could rather early see that our decision for these doors had been absolutely the right one”, says Schell. He explains that the temperature within the 5,500 m² hall always has to be at 18 degrees centigrade. Exhibits and brochures may not be exposed to changing temperatures and must all the more not become damp. “Our Efaflex spiral doors ensure that we achieve this aim quite easily. The total resistance to heat flow of the 60 mm thick laths is 0.9 W/m²K.” The insulation effect of the laths additionally reduces noise by 25 dB. Thanks to an opening speed of 1.2 m/sec and a closing speed of 1.0 m/sec, the direct area around the doors does not cool down as much as with conventional industrial doors.