The disclosure relates to a device for shredding strip-shaped material comprising a housing with at least one feed opening for the strip-shaped material and a discharge opening for the shredded material, a blade holder which is mounted to be rotatable about an axis within the housing, at least one blade which is attached to the blade holder, at least one counter blade which is attached to the housing, and a drive configured to rotate the blade holder in a first direction of rotation and a second direction of rotation, opposite to the first direction of rotation, about the axis. The disclosure further relates to a method for operating a device for shredding strip-shaped material. Under the method, at least one blade holder mounted to be rotatable in a first direction of rotation, as well as in a second direction of rotation, is employed by the device.

A paper shredder capable of feeding paper laterally, a paper holder, a curved paper box, a paper pick-up assembly, and a paper shredding assembly. The paper holder connects with the curved paper box. A paper holding plate is disposed on an upper surface the paper holder close to the curved paper box, and the first paper holding plate and/or the second paper holding plate incline downwards toward the paper inlet. The paper pick-up assembly is disposed in the first paper holding plate and is close to the paper inlet. The paper shredding assembly is disposed below the paper inlet, and the end, away from the curved paper box, of the paper is driven by a paper pick-up assembly to enter the paper shredding assembly through the paper inlet.

A coarse crushing device including a rotary cutter portion tearing off a fiber-containing sheet in a first direction, a roller portion pinching the fiber-containing sheet, and a tearing portion provided between the rotary cutter portion and the roller portion, and having a plurality of blades tearing off the fiber-containing sheet in a second direction intersecting the first direction, in which the rotary cutter portion includes a first rotating shaft member rotating about a first axis, a second rotating shaft member rotating reversely to the first rotating shaft member about a second axis parallel to the first axis, a plurality of first rotary cutters provided on the first rotating shaft member and rotating together with the first rotating shaft member, and a plurality of second rotary cutters provided on the second rotating shaft member and rotating together with the second rotating shaft member, and the first rotary cutter and the second rotary cutter are separated from each other.

An accumulation device that is operable in a feeding arrangement of a granulator, for accumulating flat material to be granulated, includes a first guiding device and a second guiding device. The accumulation device further includes a rotational shaft arranged to connect the accumulation device to the feeding arrangement. The first and the second guiding device are fixedly arranged in relation to each other so that when the accumulation device is rotated around its rotational shaft, the first guiding device as well as the second guiding device is rotated around the rotational shaft. A feeding arrangement and a granulator including such an accumulator device are also provided.

Disclosed is an accumulation device (150) operable in a feeding arrangement (110) of a granulator, for accumulating substantially flat material to be granulated. The accumulation device (150) comprises a first guiding device (152) and a second guiding device (154). The accumulation device (150) further comprises a rotational shaft (156) arranged to connect the accumulation device (150) to the feeding arrangement (110). The first and the second guiding device (152, 154) are fixedly arranged in relation to each other so that when the accumulation device (150) is rotated around its rotational shaft, the first guiding device (152) as well as the second guiding device (154) is rotated around the rotational shaft (156). Disclosed are further a feeding arrangement (110) and a granulator comprising such an accumulator device (150).

The present invention relates to a roll film shredding device, and more specifically to a roll film shredding device which rapidly and effectively shreds a long object rolled up into a roll shape, and in particular twists and crumples an object and then performs a shredding operation, thereby effectively shredding an object even though the object is thin, flexible and viscid. The roll film shredding device according to the present invention includes a support frame; an object-to-be-shredded introducing member coupled to the support frame; an object-to-be-shredded twisting unit rotatably installed to the object-to-be-shredded introducing member and performing a twisting operation for an object to be shredded; a rotary driver driving the object-to-be-shredded twisting unit to rotate and perform the twisting operation; and a cutter cutting the object twisted by the object-to-be-shredded twisting unit.

An auto-feed paper shredder is configured for placement below the surface of a desk. The auto-feeder consists of a drawer located on the front surface of the shredder. This drawer is slid out to insert a stack of documents to be shredded. When the door is slid back into the shredder and the shredding system is activated, feed rollers draw sheets of paper either from the top or the bottom surface of the stack and feed the sheets into a conventional paper shredding mechanism. An input slot is provided to insert single sheets of paper when the auto-feeder is not being used.

The invention relates to a granulator having a cutting device which is driven by a drive device and to which a material strand can be supplied, for example by means of a conveying device. The drive device is accommodated in a granulator housing. The cutting device and optionally also the conveying device are arranged in a separate module housing, which is connected in a detachable manner to the granulator housing and can be removed from same. The cutting device and/or the conveying device are connected to the respective drive device via detachable couplings. The cutting device and optionally also the conveying device can be removed from the granulator housing as a unit together with the module housing.

An auto-feed paper shredder is configured for placement below the surface of a desk. The auto-feeder consists of a drawer located on the front surface of the shredder. This drawer is slid out to insert a stack of documents to be shredded. When the door is slid back into the shredder and the shredding system is activated, feed rollers draw sheets of paper either from the top or the bottom surface of the stack and feed the sheets into a conventional paper shredding mechanism. An input slot is provided to insert single sheets of paper when the auto-feeder is not being used.

A paper shredder with counter-rotating shredder blades coupled to a shredder motor, including a paper tray having a floor and being shaped to receive paper. The floor has an offset slot therein adjacent to the counter-rotating shredder blades. The engagement wheels partly protrude through floor, adjacent to the offset slot. The engagement wheels frictionally engage paper and turn towards the offset slot to force paper into the shredder blades. Also, a dentate catch disposed in each corner of the paper tray temporarily holds an affixment while a sheet of paper held by the affixment is being frictionally engaged by the engagement wheels to enter the slot for comminution. A PAPER FULL sensor, a DOOR OPEN sensor, an OVERLOAD sensor, an OVERHEAT sensor, a paper-in-tray sensor, a paper-at-entry sensor, a SAFETY LOCK sensor, and a cover door open/closed sensor are provided, as are AUTO and MANUAL modes of operation.