Bobst’s die cutting formats have been increased to 1300 by 1700mm (+ 25.6%) for the Mastercut 1.7 and to 1300 by 2100mm (+ 5.8%) for the Mastercut 2.1 and the feed has been increased to 1300mm.
This makes it possible to modify the layout of certain work to incorporate several extra blanks per sheet. This new format was arrived at by statistical analysis of a range of boxes produced by several customers, says Bobst.
Bobst has also increased the speed of the platens to 7500 sheets/hour (+ 11%) for the Mastercut 1.7 and 7000 sheets/hour for the Mastercut 2.1
(+ 27%).
The two platens are equipped with the linear motor driven power register feeder, which by reading the edge of the sheet, or printed marks, guarantees unequalled precision of die cutting.
Bobst says the passage of the sheet through the machine has also been studied in detail to avoid unnecessary stops in production. A special device makes it possible to avoid the interruption of production during batch delivery.
Other features include; deformations of the platen have been reduced to a minimum, guaranteeing excellent quality of die cutting with very little make ready; the cam and sector chain drive system has been extensively studied to ensure better control of the accelerations and decelerations of the sheet and to give these machines the ability to transport sheets using fewer nicks.
The machines are fully automatic. The Mastercut feeders are suitable for the addition of an automatic loader, while the separation of blanks and their arrangement into the desired layers can be entirely automatic.
A layer doubler ensures operation at the highest possible rates while palletisation delivers perfectly arranged piles.
The company says that as a large amount of corrugated board packaging is printed flexo in two or three colours, in-line manufacture, printing and cutting in one pass, which means the finished packaging can be produced on ’just in time’ basis, removing intermediate stocks.
The company says it is entirely possible to run this highly automated line with just two operators and yet produce more than 20 million square meters of corrugated packaging a year.
