Abstract: The invention relates to a system for completely destroying documents having been shredded by document shredders, wherein the system comprises: collecting means for shredded documents, burning means being arranged together with collecting means, and the burning means having a burning chamber for burning the shredded documents. The burning chamber has an outlet with a filter unit and an air exhaust for remains of shredded documents that have been burnt.

Abstract: The invention relates to a system for completely destroying documents having been shredded by document shredders, wherein the system comprises:

Abstract: A document shredder can be equipped with a shredding system for very high security. The shredding system can be made up of a first cutting stage with two corresponding cutting cylinders. After the first cutting stage a second cutting stage is provided for material cut in the first cutting stage. The second cutting stage can be made up of another pair of cutting cylinders. Alternatively, the second cutting stage can be made up of a third cutting cylinder reaching into one of the cutting cylinders of the first cutting stage, thereby establishing the second cutting stage.