An apparatus, and a related method, for unwinding reels and for joining a ply between two reels including a first unwinder adapted to unwind a first reel, a second unwinder adapted to unwind a second reel, a joining device adapted to join a first ply belonging to the first reel with a second ply belonging to the second reel, the joining device including a first pulling bar is able to pull a flap of the first ply along a joining path with the second ply, a second pulling bar is adapted to pull a flap of the second ply along a joining path with the first ply, joining means configured to join, in a joining point along the joining path, the flap of the first ply with the second ply or the flap of the second ply with the first ply, first cutting means configured to cut the first ply or the second ply upstream of the joining point where the joint is performed between the first ply and the second ply, and second cutting means configured to cut the flap of the first ply or the flap of the second ply downstream of the joining point.

An assembly for feeding backing ribbon for adhesive labels for labeling products to be labeled, comprising a splicing device and at least two supporting elements for the backing ribbon, the splicing device being intended to perform on command the splice between a first splicing region, formed on a first backing ribbon being unwound from a first supporting element, and a second splicing region, formed on a second backing ribbon wound on a second supporting element, the first backing ribbon supporting a plurality of adhesive labels which are arranged, mutually spaced, on the face directed toward the second splicing region; the first backing ribbon having, when associated with the respective first supporting element, at least one portion that is free from self-adhesive labels and forms the first splicing region; the portion is located substantially at the end of the first backing ribbon that is associated with the first supporting element.

An assembly for feeding backing ribbon for adhesive labels for labeling products to be labeled, comprising a splicing device and at least two supporting elements for the backing ribbon, the splicing device being intended to perform on command the splice between a first splicing region, formed on a first backing ribbon being unwound from a first supporting element, and a second splicing region, formed on a second backing ribbon wound on a second supporting element, the first backing ribbon supporting a plurality of adhesive labels which are arranged, mutually spaced, on the face directed toward the second splicing region; the first backing ribbon having, when associated with the respective first supporting element, at least one portion that is free from self-adhesive labels and forms the first splicing region; the portion is located substantially at the end of the first backing ribbon that is associated with the first supporting element.

A roll changing apparatus, a winding device, and a gluing device are disclosed in the present application. The roll changing apparatus includes an unwinding assembly including a first unwinding mechanism and a second unwinding mechanism; and a roll changing assembly including a first adsorption mechanism, a second adsorption mechanism, and a cutting mechanism. The cutting mechanism is used to cut off a first material strip between the second adsorption mechanism and a first adsorption area or a second material strip between the second adsorption mechanism and a second adsorption area.

The invention relates to a device and a method for connecting finite webs of material for the energy cell producing industry, wherein the device comprises a holding device adapted to hold the new web of material by means of negative pressure in the second guide section, as well as a backing element and a cutting element, downstream in the conveying direction of the holding device. The backing element and the cutting element are adapted to cut the stationary new web of material to produce a new leading end of the new web of material. The device also comprises an applicator for applying an adhesive strip to the new leading end of the new web of material and a ram and a cutting device, wherein the cutting device is adapted to cut the stationary running-out web of material to produce a new trailing end of the running-out web of material. The ram is adapted to press the trailing web end of the running-out web of material onto the adhesive strip and against the applicator in order to connect the new leading end of the new web of material to the new trailing end of the running-out web of material.