Method and device for perforating material webs
AssigneeHeidelberger Druckmaschinen AG
InventorsBernard Ganneval, Pierre Hoynant
Life of this patent
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Abstract
A method of producing folds on signatures separated from a material web stream, including a multilayer material web stream, includes the method steps of disposing two cutting and perforating devices, respectively, in a web travel direction; cutting the material web stream in the region of a first longitudinal fold by a first cutting device assigned to the fold; perforating/cutting the material web stream in the region of a crossfold forming material bridges; and providing that at least one of the cutting or perforating tools is adjustable in relation to the material web stream. The invention also includes a device for performing the method; and a folder, and more specifically, a pinless folder having the device.
Claims22
A method of producing folds on signatures separated from a material web stream, including a multilayer material web stream, which comprises the method steps of disposing two cutting and perforating devices, respectively, in a web travel direction;
- cutting the material web stream in the region of a first longitudinal fold by a first cutting device assigned to the fold;
- perforating/cutting the material web stream in the region of a crossfold forming material bridges;
- and providing that at least one of the cutting or perforating tools is adjustable in relation to the material web stream.
A device for producing folds in signatures which are separated from a material web stream, including a multilayer material web stream, having a first longitudinal folding device for producing a first longitudinal fold, and a folding cylinder for producing a crossfold, comprising an infeedable cutting device for cutting the material web stream along the first longitudinal fold, and a further perforating/cutting device disposed downline therefrom, and being provided with regions for at least one of perforating the material web stream and cutting the material web stream, respectively.
A folder having a device for producing folds in signatures which are separated from a material web stream, including a multilayer material web stream, having a first longitudinal folding device for producing a first longitudinal fold, and a folding cylinder for producing a crossfold, comprising an infeedable cutting device for cutting the material web stream along the first longitudinal fold, and a further perforating/cutting device disposed downline therefrom, and being provided with regions for at least one of perforating the material web stream and for cutting the material web stream, respectively.
A pinless folder having a device for producing folds in signatures which are separated from a material web stream, including a multilayer material web stream, having a first longitudinal folding device for producing a first longitudinal fold, and a folding cylinder for producing a crossfold, comprising an infeedable cutting device for cutting the material web stream along the first longitudinal fold, and a further perforating/cutting device disposed downline therefrom, and being provided with regions for at least one of perforating the material web stream and for cutting the material web stream, respectively.
Dependencies are inferred from the claim text.