An interleaving unit, comprising a pair of rolls (1, 2) set alongside one another and counter-rotating and provided with respective first and second folding tools (3, 4; 5, 6) set at a distance from one another along the circumferential development of the respective peripheral surfaces so as to operate in a common point of tangency (Z) on a succession of sheets (7a, 7b) fed between the two rolls, said tools (3, 4; 5, 6) being set on respective mobile cylinder sectors (8, 9, 10, 11) to enable positioning thereof at an adjustable distance apart along the circumferential development of a corresponding roll (1, 2), said interleaving unit comprising means (M1, M2, U) for independently adjusting the speed of rotation of one or more of said sectors according to their angular position in order to reduce or increase the peripheral speed of said sectors with respect to a speed of feed (Vm) of said sheets.

Apparatuses and methods of forming sheets having different lengths are provided. The apparatuses and methods may also be used to form panel lengths of different values using a same processing roll. In some embodiments, the diameter of the roll need not change. In some embodiments, the spacing between adjacent rolls need not be changed when transitioning from one sheet length to another sheet length. In some embodiments, the processing roll includes an excess material receiving component that can be active or deactivated to switch between different sheet sizes.

Apparatuses and methods of forming sheets having different lengths are provided. The apparatuses and methods may also be used to form panel lengths of different values using a same processing roll. In some embodiments, the diameter of the roll need not change. In some embodiments, the spacing between adjacent rolls need not be changed when transitioning from one sheet length to another sheet length. In some embodiments, the processing roll includes an excess material receiving component that can be active or deactivated to switch between different sheet sizes.

A folding or interfolding unit includes first and second folding or interfolding rolls to fold or interfold the sheets of paper according to a predetermined folding or interfolding configuration. The first and second folding or interfolding rolls include, respectively, a tubular body configured to rotate in a predetermined direction of rotation about a longitudinal rotation axis, and gripping groups, each of which includes a mechanical gripping member configured to move, at a gripping point, from an opening position to a closing position, which is arranged to mechanically hold the sheets up to a releasing point. Each gripping group includes at least one suction hole associated to each mechanical gripping member. A vacuum distribution device selectively pneumatically connects at least one suction hole at a time to a device for generating a predetermined vacuum degree, to cause the sheets of paper to adhere between starting and ending positions.

A folding or interfolding unit includes first and second folding or interfolding rolls to fold or interfold the sheets of paper according to a predetermined folding or interfolding configuration. The first and second folding or interfolding rolls include, respectively, a tubular body configured to rotate in a predetermined direction of rotation about a longitudinal rotation axis, and gripping groups, each of which includes a mechanical gripping member configured to move, at a gripping point, from an opening position to a closing position, which is arranged to mechanically hold the sheets up to a releasing point. Each gripping group includes at least one suction hole associated to each mechanical gripping member. A vacuum distribution device selectively pneumatically connects at least one suction hole at a time to a device for generating a predetermined vacuum degree, to cause the sheets of paper to adhere between starting and ending positions.

The invention relates to a fabric organization device for collecting, gathering, folding, organizing, stacking and storing sheets of flexible materials including fabrics, textiles, and other flat, sheet-form, bendable, flexible and foldable woven, non-woven and textile materials, embodiments of the invention enabling pieces and sheets of materials to be collected in an organized, uniform and stackable manner to facilitate the display, handling and storage of textile materials in a convenient and economical manner.

The invention relates to a fabric organization device for collecting, gathering, folding, organizing, stacking and storing sheets of flexible materials including fabrics, textiles, and other flat, sheet-form, bendable, flexible and foldable woven, non-woven and textile materials, embodiments of the invention enabling pieces and sheets of materials to be collected in an organized, uniform and stackable manner to facilitate the display, handling and storage of textile materials in a convenient and economical manner.

Provided is a lay-flat book block production apparatus. The apparatus comprises a glue dispenser, the glue dispenser to transition between an active state in which glue is to be provided to one side of the web which is to be guided past the glue dispenser and an inactive state in which glue is not to be provided to the web which is to be guided past the glue dispenser. The apparatus further comprises a folding unit, wherein the folding unit is to fold the web along a plurality of crease lines wherein each of a plurality of flat portions of a side of the folded web faces another of the plurality of flat portions of a same side.

Provided is a lay-flat book block production apparatus. The apparatus comprises a glue dispenser, the glue dispenser to transition between an active state in which glue is to be provided to one side of the web which is to be guided past the glue dispenser and an inactive state in which glue is not to be provided to the web which is to be guided past the glue dispenser. The apparatus further comprises a folding unit, wherein the folding unit is to fold the web along a plurality of crease lines wherein each of a plurality of flat portions of a side of the folded web faces another of the plurality of flat portions of a same side.

A machine configured to produce stacks of folded pop-up wipes includes a holder, a first tension unit, a folding unit, and a control unit. The folding unit includes two or more folding rollers each including a hub including grippers to grip and release the material and infeed plates to feed the tissue to respective grippers of the other roller. Positions of the infeed plates are adjustable in relation to positions of the grippers Distances between the grippers and the infeed plates adapt a width of the produced stacks of wipes. The control unit is communicatively coupled to the first tension unit and the folding unit and includes a processor, and a memory. The memory contains instructions executable by the processor. The material is threaded along a path through the machine via the first tension unit and the folding unit. Executing the instructions causes the control unit to control the machine.