Copenhagen-based Aller Tryk A/S, one of the largest producers of printed products in Scandinavia, already uses two high-performance Tempo saddle stitchers from Muller Martini. Managing Director Jesper Jungersen says: "Using the Supra, we hope to reduce production times for our weekly magazines even further." The Supra has a unique stitching system with two counter-rotating stitcher carriages (boxer principle). With this principle, the two stitching units move against each other, thereby increasing the inertia forces. Each stitching unit only stitches every second product. This halves the stitching speed, allowing the Supra to achieve up to 30,000 cycles per hour. Thanks to automation of the key axes and the ability to save job data for repeat jobs, changeover times with the Supra are very fast. When the size is input, the feeder, the stitching machine and the downstream machines are automatically synchronized on a product-specific basis. The infeed and spine length (head and foot trim) are automatically preset in the crank trimmer.

PrintRoll – The Key to Fully Automatic Processing
Aller Tryk will predominantly be using the new Supra line, with six feeders, two merchandise tippers, Robusto stacker and Fontana pallet dispenser, for magazines with glued-in cards and inserts. The less time-critical signatures will be printed a few days before the ongoing sections of the magazine and buffered in a PrintRoll roller system. For this reason, to complement the Supra, Aller Tryk has also invested in a PrintRoll system with four double winding stations and 16 double unwinding stations, plus 400 new PrintRoll frames. The compact double winding station and the double unwinding station both comprise two PrintRoll units. Wheel changes are carried out automatically without production stoppages or manual intervention. All this makes PrintRoll the key to fully automatic processing and is the primary reason for the Supra's high cycle capacity. "It gives us the flexibility we need to produce our magazines," Jesper Jungersen points out. The Supra and the PrintRoll system will be installed this coming August/September.

 
 
With the new high-performance Supra saddle stitcher and the PrintRoll system, Aller Tryk A/S in Copenhagen can benefit from increased flexibility for the production of weekly magazines.