When a remaining amount of a sheet on one original sheet roll is equal to or less than a predetermined remaining amount, a pair of holding pads is brought into a first posture where holding surfaces are opened, and the holding surface of one holding pad is pressed to a joining end portion from the outside of the original sheet roll in a radial direction of another original sheet roll. Further, the holding pad is moved such that the joining end portion is separated toward the outside of the original sheet roll in the radial direction. Further, the posture of the pair of holding pads is changed into a second posture where the holding surfaces approach each other, and the joining end portion is conveyed to a joining part in a state where the joining end portion is sandwiched between the holding surfaces of the pair of holding pads.

A supply (22) of sheet stock material (24, 34) for a dunnage conversion machine (26) that is readily spliced to another supply includes (a) one or more plies of sheet material (24, 34) having (i) multiple longitudinally-extending sections, including a center section (42) bounded by lateral sections (40), where the lateral sections (40) are folded over a common face of the center section (42) along longitudinal fold lines (44) at lateral edges of the folded sheet material, and (ii) a leading end (60) and a trailing end (62) at respective longitudinally-opposite ends of the sheet material, where the lateral sections (40) are separated from the center section (42) adjacent the leading end (60) and adjacent the trailing end (62) along respective lines of separation; and (b) a splicing adhesive (76) applied to the sheet material adjacent the leading end (60) or the trailing end (62) on both the center section (42) and each of the lateral WO 2020/092578 A1 sections (40) to facilitate splicing each section to respective sections of two supplies.

The present application relates to a roll replacing device and an adhesive tape sticking equipment. The roll replacing roll device replacing includes an unwinding member, a roll replacing member, a cutting member, and an end pressing member, which can realize automatic roll replacing of a work strip and a spare strip and reduce staffing, thereby reducing labor cost.

A roll changing apparatus, a winding device and a gluing device. The roll changing apparatus comprises: an unwinding assembly (10), which comprises first unwinding mechanism (11) and a second unwinding mechanism (12); a roll changing assembly, which comprises a mounting base (21), a first adsorption mechanism (22), a second adsorption mechanism (23) and a cutting mechanism (24). The first adsorption mechanism (22) comprises a first adsorption base (221), and the second adsorption mechanism (23) comprises a second adsorption base (231); the first adsorption base (221) and the second adsorption base (231) are arranged along a first direction and are configured such that at least one thereamong may approach relative to the other or be away from one another in the first direction; a side of the first adsorption base (221) facing the second adsorption base (231) is provided with a first adsorption area (2211) and a second adsorption area (2212) which are arranged along a second direction which is perpendicular to the first direction; the first adsorption area (2211) is used for adsorbing a first material belt, and the second adsorption area (2212) is used for adsorbing a second material belt; and the cutting mechanism (24) is used for cutting off the first material belt between the second adsorption mechanism (23) and the first adsorption area (2211) or the second material belt between the second adsorption mechanism (23) and the second adsorption area (2212). Automatic switching of a first material belt and a second material belt may be achieved, which greatly reduces downtime and improves production efficiency compared with a manual roll changing method.

An applicator head for applying an adhesive tape on a surface or substrate, wherein the adhesive tape comprises a material and at least one removable liner, the applicator head comprising: an application tip; a cutting mechanism positioned adjacent an outer most point of the application tip; a positioning device is configured such that the cutting mechanism severs the material while maintaining the at least one removable liner intact.

A system and method for the splicing transversely wound webs is provided. A web diverter unit includes a web retaining assembly movable between a first position where the web retaining assembly is not in contact with the running web and a second position where the web retaining assembly is in contact with the running web. With the web retaining assembly in the second position, the web retaining assembly temporarily holds the running web being unwound off of the running web material roll at a constant transverse position to enable precise alignment of the running web with the waiting web for splicing therebetween.

A method for splicing two sheets of material containing alkaloids is provided, the method including: providing a first sheet of material containing alkaloids wound in a first bobbin; providing a second sheet of material containing alkaloids wound in a second bobbin; unwinding the first sheet wound in the first bobbin; evaluating one or more of the following parameters of the unwound first sheet: moisture, thickness, width, stickiness, and presence or absence of holes or tears; and depending on a value of the evaluated one or more parameters, unwinding the second sheet wound in the second bobbin, and splicing the first sheet and the second sheet. A system for splicing two sheets of material containing alkaloids is also provided.

Unwinder of a thin ply product wound on a roll, of the type with automatic switching of the unwinding roll with a spare roll, said unwinder comprising—a first roll-holder assembly equipped with a first unwinding rod for a respective roll, on which the roll is adapted to be supported, and which has an axis of rotation transversal to the direction of movement of the ply unwound from the roll, —a second roll-holder assembly equipped with a second unwinding rod for a respective roll, on which the roll is adapted to be supported, said second rod being parallel to said first unwinding rod of the first roll-holder assembly, said second roll-holder assembly facing said first roll-holder assembly in an unwinding zone, wherein of said two roll-holder assemblies, one assembly holds the unwinding roll and the other assembly holds the spare roll to be switched, —a ply splicing assembly placed above said first and second facing roll-holder assemblies, —a ply accumulation unit to allow automatic switching between a roll being unwound in one said roll-holder assembly and a spare roll provided in the other roll-holder assembly, —a transversal position correction system for the side edges of the plies on the rolls present in said roll-holder assemblies.

A system comprising: a source of a tape comprising a material associated with an adhesive and at least one removable liner; an applicator head; a cutting mechanism; at least one drive feeding mechanism configured to index the tape from the source to the applicator head at a controlled rate; wherein the applicator head is controllable to apply the material on a surface or a substrate; and wherein the applicator head comprises a cutting mechanism configured to sever the material while leaving the at least one removable liner intact.

A feeding system configured to transport a material to a tape applicator, the feeding system comprising: a flexible conduit coupled between a spool unloading device and a tape applicator, wherein the flexible conduit receives the material from a source; and a fluid amplifier coupled to the flexible conduit to facilitate movement of the material therein by creating a vacuum effect.