There is provided a sheet post-processing apparatus capable of performing eco-stapling processing to prevent a decrease in binding force by the thickness of a sheet with a simple arrangement by changing a stapling count depending on the grammage and size of a sheet and the number of sheets in consideration of the change in binding force caused by the sheet size.

A sheet processing device includes: a stacking unit configured to stack a plurality of sheets to obtain a sheet bundle; a stitched-sheet number acquiring unit configured to acquire a number of sheets in the sheet bundle, which is a target to be stitched; a permanent stitching unit configured to permanently stitch the sheet bundle; a temporary stitching unit configured to be capable of temporarily stitching a plurality of areas of the sheet bundle; a selecting unit configured to select any one of the permanent stitching unit and the temporary stitching unit to be used; and a stitching-process control unit configured to, when the temporary stitching unit is selected by the selecting unit, control the temporary stitching unit so as to change a number of areas that are stitched by the temporary stitching unit.

A process and system for making a domed product by forming domes or protrusions into a sheet. The process including: moving a die set comprising one or more domes or protrusions, wherein the die set selectively registers with the sheet; latching the die set to the sheet after the selectively registering; and pressing the one or more domes or protrusions of the die set into the sheet for a period to obtain the domed product, wherein the die set moves independently from the sheet prior to the latching.

The invention relates to an apparatus (10, 80) and method (160) for cutting, printing or embossing a continuous sheet (26) of material. The apparatus (10, 80) comprising a tool element (12), at least two anvils 14, 16 which are co-operable with the tool element (12), and a phase adjustment device (24). The tool element (12) is configured to have a constant surface speed during operation of the apparatus (10, 80). The apparatus (10, 80) is adapted to receive the continuous sheet (26) at a constant speed into the apparatus (10, 80), and being adapted to output the continuous sheet (26) at a constant speed from the apparatus (10, 80). The phase adjustment device (24) is operable to adjust a speed of the continuous sheet (26) within the apparatus (10, 80) in order to adjust a phase of alternate parts of the continuous sheet (26) to be cut, printed or embossed by each anvil (14, 16) as it co-operates with the tool element (12).

A sheet processing apparatus includes a first binding unit configured to bind a sheet bundle; a second binding unit with greater number of bindable sheets than number of bindable sheets of the first binding unit; and a number-of-sheets determining unit configured to determine whether number of to-be-bound sheets exceeds the number of bindable sheets of the first binding unit. The first binding unit moves to a binding position, and if the number-of-sheets determining unit determines that the number of to-be-bound sheets exceeds the number of bindable sheets of the first binding unit, the first binding unit moves away from the binding position. When the number-of-sheets determining unit determines that the number of to-be-bound sheets exceeds the number of bindable sheets of the first binding unit, the second binding unit moves to the binding position.

A machine for embossing, including at least one pair of embossing nips for plies of paper, at least one laminating nip to bond the plies of paper, a pair of embossing cylinders, each having on its surface a respective plurality of embossing protrusions, each defining a wrap angle for the at least one ply of paper, and defining therebetween a transfer nip, a pair of pressure cylinders, each associated with a respective one of the embossing cylinder, the embossing nip being defined between each pair formed of embossing cylinder and pressure cylinder, a laminating device for bonding the plies delivered from the transfer nip, at least one distribution device of material to facilitate ply-bonding arranged upstream of the laminating device, and at least one heating device for at least one of the embossing cylinders.

A sheet post-processing apparatus includes a binding unit that crimps a predetermined position on a sheet for binding, and a setting unit that sets the number of binding points at which to bind the sheet. The binding unit applies binding to the sheet at different positions as many as the number of binding points set by the setting unit.

The embossing device includes one or more cameras with respective lighting and image acquiring systems to acquire images of one or more plies of the produced cellulose web material. The images can be used to detect any defect in the produced material and to alarm, or signal the need for intervention on an embossing device. Based on the defects on the product detected by processing the acquired images, it is also possible to directly intervene on functional units of the embossing device, to remove or reduce the defects.

An embossing device comprises a first embossing roller and a second embossing roller forming a passage for a web of wrapping material to be embossed, which has a main line of extension and a direction of feed; the first embossing roller comprises on its outer surface toothings to make an imprint on the web; a first toothing having a first impression to imprint on said web a first segment of a reference for identifying a section of the web and a second toothing to imprint a decorative pattern on the web; the second toothing comprises a zone without teeth for defining on the web a second, unembossed segment of the reference; the first toothing and the zone without teeth are offset from each other along a directrix of the first roller.

A sheet binding device includes a pressurizing unit that pressurizes a sheet bundle to bind the sheet bundle, a pressurizing section that is disposed in the pressurizing unit and configured to be moved from a waiting position separated from the sheet bundle to a pressurizing position at which the pressurizing section pressurizes the sheet bundle, a drive motor that actuates the pressurizing unit, and a controller that controls the drive motor such that the pressurizing section is engaged with the sheet bundle at a predetermined setting velocity.