A controller includes a shaft control unit that controls driving of a shaft drive source such that a standby side roll is rotated, and a unit control unit that presses a pressing roller against an outer peripheral surface of the standby side roll via a sheet of a supply side roll by performing torque control on a unit drive source in a state in which the pressing roller is positioned in an area from a control switching position to the outer peripheral surface of the standby side roll together with performing position control on the unit drive source in a state in which the pressing roller is positioned in an area farther away from the standby side roll than the control switching position away from the outer peripheral surface of the standby side roll by a preset distance while the standby side roll is rotated by the shaft control unit.

Provided are a sheet supply device and a sheet supply method capable of keeping the precision of a sheet separating operation constant regardless of differences in diameter dimensions of rolls. A second guide roller is disposed at an opposite side of a standby side roll with respect to a tangential line to the outer peripheral surface of the standby side roll at a pressing position in a state in which the pressing roller is pressed against the pressing position, and guides a sheet such that the sheet is guided from the pressing roller in a direction away from the standby side roll. Furthermore, the second guide roller is fixed to a moving unit so as to be configured to approach and move away from the standby side roll together with the pressing roller.

Provided is a sheet supply device capable of reliably joining sheets by accurately transmitting force for joining the sheets. A joining mechanism includes a pressing roller that presses a sheet of a supply side roll against the outer peripheral surface of a standby side roll; and a moving unit that supports the pressing roller such that the pressing roller is configured to approach and move away from the standby side roll supported by a support shaft disposed at a splice position in the radial direction of the standby side roll. The moving unit supports the pressing roller such that the center of the pressing roller is movable on a straight line passing through the center of a rotation shaft and the center of the support shaft disposed at the splice position.

A controller includes: an adhesion member position determination unit that determines a position of an adhesion member in a rotation direction of a roll on the basis of the result of detection from an adhesion member detector in a state in which the roll has been rotated by a shaft control unit; and an outer diameter determination unit that determines an outer diameter of the roll in a portion where the adhesion member is positioned, the determination being performed on the basis of the result of detection from an outer diameter detector in a state in which driving of shaft drive sources are controlled by the shaft control unit such that the adhesion member is positioned within a detection range of the outer diameter detector on the basis of the position of the adhesion member determined by the adhesion member position determination unit.

Disclosed is a feedstock device (1) to deliver film (2) to a bundle-wrapping machine and including, on the one hand, at least one reel (3) to receive a roll (4) of the film (2) to be delivered, and, on the other hand, a joining unit (5) to attach the next film (2) to the film (2) that is currently being fed. This device includes a support (6) on which the at least one reel (3) is mounted, with the support (6) being mobile in relation to the joining unit (5) to bring the delivered film (2) to the latter. The invention also has as its object a machine and a corresponding method.

A sheet-feeding system includes a holding part which holds an end portion of a sheet, a nozzle part for discharging an adhesive agent for joining sheets to each other, and a nozzle moving unit which supports the nozzle part such that the nozzle part is made movable within a region including both temporarily holding parts, in which when a sheet joining condition is established where a remaining amount of the sheet on one original sheet roll becomes equal to or below a predetermined remaining amount, an end portion of the sheet on the other original sheet roll is conveyed to the temporarily holding part by the holding part and, thereafter, the nozzle part is moved to the temporarily holding part, and the adhesive agent is discharged to the end portion of the sheet from the nozzle part.

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 the other 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.

The sheet connection device (1) includes: adhesive rollers (10, 10); a joining unit (20) and a cutting unit (30); and feed rollers (40, 40). The cutting unit (30) is capable of forming a connected end portion (SE2) by cutting the second bonding sheet (S2). The adhesive rollers (10, 10) separate the first bonding sheet (S1) into an adhesive sheet (SA) and a release sheet (SP) to form a separated portion (50) by feeding the first bonding sheet (S1) while holding a connecting end portion (SE1) of the first bonding sheet (S1). The feed rollers (40, 40) inserts the connected end portion (SE2) into the separated portion (50) by feeding the second bonding sheet (S2) toward the connecting end portion (SE1). The joining unit (20) connects the connecting end portion (SE1) and the connected end portion (SE2) to each other by adhesion or welding.

The invention provides a device for connecting together two flat tubular sheaths, the device including: a blocker (22a, 22b, 22c, 22d) for blocking one end of a first sheath, the blocker having means for opening an end of the first sheath; an adhesive-applicator system for applying adhesive to the inside of the open end of the sheath; the blocker being arranged to authorize closure of the end of the first sheath, once adhesive has been applied thereto, on an end of the second sheath.

The invention also provides a corresponding roll of adhesive and a corresponding connection method.

Apparatus for splicing expiring and replenishing webs of a web material includes first and second spaced platens having respective facing inner surfaces defining a passageway for transit of the expiring web, where the platens are adapted for displacement toward and away from one another in a reciprocating manner. The first platen is adapted to engage an end of the replenishing web, while the second platen is adapted to engage and position the moving expiring web. Moving the platens together with their respective inner surfaces in close proximity to one another causes a cutting die on the first platen to sever the expiring web forming outfeeding and infeeding ends of the expiring web, and to attach the expiring web's outfeeding end to the replenishing web. Attached to the second platen in facing relation to the first platen and engaging the expiring web is an ironing pad to ensure firm contact and adhesion of expiring web to the replenishing web. During web splicing, the cutting die is transferred from the first platen to the second platen to free the replenishing web from the first platen, with the cutting die engaging and collecting or holding the expiring web's infeeding end.