Fischer & Krecke Gmbh & Co.

Bobst Bielefeld Gmbh

Fred Rostalski

Wilfried Kolbe

Klaus Schirrich

Diethard Obermeier

Dieter Obermeier

Ewald Steinweg

A method for the determination of print parameters of a printing machine, particularly a flexographic printing machine, comprises the following steps: First, a print form () is provided and mounted on a print cylinder (). Then, at least one high-resolution image of the surface of the print form () is recorded by means of a 3D camera (). On the basis of the at least one high-resolution image a height profile of the print form () is determined and then a simulated print image is calculated on the basis of the height profile and an initial set of print parameters. Finally, optimized print parameters are determined by checking and/or varying the print parameters of the initial set. For this purpose, a simulated print image is calculated again after the print parameters have been varied. In addition, a test stand is specified on which such a method can be carried out.

Method for determining print parameters of a printing machine and test stand

A method for producing bags (12) with carrying handles (48), for which the starting material for the carrying handles is supplied as endless material and at least two carrying handles are affixed to each finished or still unfinished bag, in which the starting material for the several carrying handles (48) belonging to one bag (12), to begin with, are supplied in the form of a single strip (20) of material, which then is divided up continuously into several parallel partial strips (38, 40) for the individual carrying handles.

Method and apparatus for producing bags with carrying handles by using a

A method for manufacturing bags (18) with strap shaped handles (16) which provides for the handles to be bonded to the outside faces of the bags by attachment portions (24) at the free ends of their parallel legs, in which assembling and bonding of the handles (16) is effected during continuous transport of the bags (18), with their bottoms (20) forward, from a bag making machine (10) in which the bags without handles are produced, to a stacker station; the handles are folded such that their portions (26) protruding beyond the bag marginal edge while in the usage position are folded over forwardly as viewed in bag transport direction; and the handle portions (26) as folded over are detachably tacked to the bags (18) and/or the attachment portions (24) before the bags are entering the stacker station (14).

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Bielefeld, Germany

Fred Rostalski