Device for compacting hollow bodies (100.1), in particular bottles of e.g. plastic and/or cans of e.g. metal, having a) a pressing device for flattening and optionally perforating a hollow body (100.1), wherein b) an upsetting device is arranged downstream of the pressing device in the direction of passage for upsetting the flattened, plate-shaped hollow body (100.2) in one of the directions of the main plane of the plate (100.2), wherein the pressing device contains - at least one rotatably drivable pressing roller for gripping and drawing a hollow body (100.1) through a pressing slot formed between the pressing roller and a pressing counter-element in the direction of passage, whereby the flattening takes place, the upsetting device contains - at least one rotatably drivable first upsetting roller for gripping and drawing a flattened hollow body (100.2) through an upsetting slot formed between the upsetting roller and an upsetting counter-element in the direction of passage, characterised in that - the at least one pressing roller has teeth distributed over the circumference and projecting radially beyond a base diameter of the pressing roller in an active region (1.1), - the teeth are formed within a plurality of axially spaced tooth annular regions, and - scrapers project into the axial spacings between the tooth ring regions with their scraper surface approximately tangentially to the circumference of the base body of the pressing roller and against the direction of passage. a) a pressing device for flattening and optionally perforating a hollow body (100.1), wherein b) an upsetting device is arranged downstream of the pressing device in the direction of passage for upsetting the flattened, plate-shaped hollow body (100.2) in one of the directions of the main plane of the plate (100.2), wherein the pressing device contains - at least one rotatably drivable pressing roller for gripping and drawing a hollow body (100.1) through a pressing slot formed between the pressing roller and a pressing counter-element in the direction of passage, whereby the flattening takes place, the upsetting device contains - at least one rotatably drivable first upsetting roller for gripping and drawing a flattened hollow body (100.2) through an upsetting slot formed between the upsetting roller and an upsetting counter-element in the direction of passage, characterised in that - the at least one pressing roller has teeth distributed over the circumference and projecting radially beyond a base diameter of the pressing roller in an active region (1.1), - the teeth are formed within a plurality of axially spaced tooth annular regions, and - scrapers project into the axial spacings between the tooth ring regions with their scraper surface approximately tangentially to the circumference of the base body of the pressing roller and against the direction of passage. wherein the pressing device contains - at least one rotatably drivable pressing roller for gripping and drawing a hollow body (100.1) through a pressing slot formed between the pressing roller and a pressing counter-element in the direction of passage, whereby the flattening takes place, - at least one rotatably drivable pressing roller for gripping and drawing a hollow body (100.1) through a pressing slot formed between the pressing roller and a pressing counter-element in the direction of passage, whereby the flattening takes place, the upsetting device contains - at least one rotatably drivable first upsetting roller for gripping and drawing a flattened hollow body (100.2) through an upsetting slot formed between the upsetting roller and an upsetting counter-element in the direction of passage, - at least one rotatably drivable first upsetting roller for gripping and drawing a flattened hollow body (100.2) through an upsetting slot formed between the upsetting roller and an upsetting counter-element in the direction of passage, characterised in that - the at least one pressing roller has teeth distributed over the circumference and projecting radially beyond a base diameter of the pressing roller in an active region (1.1), - the teeth are formed within a plurality of axially spaced tooth annular regions, and - scrapers project into the axial spacings between the tooth ring regions with their scraper surface approximately tangentially to the circumference of the base body of the pressing roller and against the direction of passage. - the at least one pressing roller has teeth distributed over the circumference and projecting radially beyond a base diameter of the pressing roller in an active region (1.1), - the teeth are formed within a plurality of axially spaced tooth annular regions, and - scrapers project into the axial spacings between the tooth ring regions with their scraper surface approximately tangentially to the circumference of the base body of the pressing roller and against the direction of passage.