A first shaft control section is configured to control rotation of a first support shaft supporting a first roll such that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section is configured to execute a first rotation control of regulating a rotational speed of a second support shaft supporting a second roll such that a peripheral speed of the second roll coincides with the predetermined running speed of the sheet of the first roll. The second shaft control section is configured to regulate the rotational speed of the second support shaft by acceleration or deceleration such that an adhesive on an outer peripheral surface of the second roll arrives at a pressing position when a target joining portion of the sheet of the first roll meets the pressing position.

In steady control, a shaft control unit (922) adjusts rotation speed of a first support shaft (31) to cause a first roll (R1) to have peripheral speed equal to predetermined conveyance speed by maintaining a sheet storage amount in a storage mechanism (5) in a first storage amount as a reference. In storage amount adjustment control, the shaft control unit (922) accelerates the rotation speed of the first support shaft (31) to increase the peripheral speed of the first roll (R1) higher than the conveyance speed, until the sheet storage amount in the storage mechanism (5) reaches a predetermined second storage amount that is larger than the first storage amount. A calculation unit (911) calculates an outer diameter of the first roll (R1) based on the conveyance speed when the steady control is performed, and calculates the outer diameter of the first roll (R1) based on the sheet thickness calculated from a decrease amount of the outer diameter of the first roll (R1) in the steady control when the storage amount adjustment control is performed.

Devices, methods, and systems for splicing a trailing edge of an outgoing roll with a leading edge of a replacement roll with a lapless butt splice on-the-fly during converting and printing production. A first strip of adhesive tape may be placed partially under the leading edge, such that a portion of the adhesive tape remains exposed beyond the leading edge. The replacement roll may be accelerated to match the speed of the outgoing web's movement, a trailing edge of the outgoing web may be cut free from the outgoing roll, and the trailing edge of the outgoing roll may be positioned over the exposed portion of the adhesive tape. A second strip of adhesive tape may be applied over the leading edge and trailing edge using a splicer roller timed to apply the tape when the edges pass proximate to the splicer roller.

A supply of stock material for a dunnage conversion machine includes two plies of sheet stock material wound into a roll or fan-folded into a stack. Each ply has disposed on a corresponding leading or trailing end thereof an adhesive layer and a removable release liner covering the adhesive layer. When applied to a leading end of the supply, the adhesive layer is applied to opposing, outwardly-facing surfaces of the respective plies. When a supply of stock material is almost spent, the operator removes the release liners from both plies to expose respective adhesive layers, and then interposes the leading end of a new supply between the plies of the trailing end of the almost-spent supply and presses the layers together to attach the plies of the new supply to respective plies of the almost-spent supply, for conversion into dunnage.

An electrode roll connection automation apparatus is configured for uniformly maintaining the width of electrode tabs in a process of connecting electrode sheets to each other and for automatically connecting the electrode sheets to each other. The electrode roll connection automation apparatus includes first and second supply units, a connection unit, and an electrode tab sensing unit. The first and the second supply units are configured to supply first and second electrode sheets, respectively, on which electrode tabs are formed. The connection unit is configured to connect the first electrode sheet and the second electrode sheet to each other. The electrode tab sensing unit is disposed between the first supply unit and the connection unit. The electrode tab sensing unit is configured to measure the distance between the electrode tabs.

In a method for packaging products, the products are packaged with a packaging material on a packaging line. The packaging material is first of all drawn off a first packaging-material reel and fed to the packaging line. When the first packaging-material reel has been at least partially used up, an initial portion of a second packaging-material reel is made to overlap with a packaging-material portion already drawn off the first packaging-material reel and is joined to the latter packaging-material portion. After the two packaging-material portions have been joined together, the packaging material is drawn off from the second packaging-material reel and fed to the packaging line. The two above-mentioned packaging-material portions are joined together by a stamping operator of a stamping device. There is also described a packaging installation for carrying out the method.

A first shaft control section controls a first support shaft so that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section executes an adjustive control of adjusting at least one of a rotation start time and a rotational acceleration of the second support shaft so that, when a first joining target mark on the sheet of the first roll moves to a first reference position, a second joining target mark on an outer peripheral surface of the second roll arrives at a second reference position in a rotational direction thereof, and a peripheral speed of the second roll coincides with the running speed of the sheet of the first roll.

A first shaft control section controls a first support shaft so that a sheet is unwound from the first roll at a predetermined running speed. A second shaft control section executes an adjustive control of adjusting at least one of a rotation start time and a rotational acceleration of the second support shaft so that, when a first joining target mark on the sheet of the first roll moves to a first reference position, a second joining target mark on an outer peripheral surface of the second roll arrives at a second reference position in a rotational direction thereof, and a peripheral speed of the second roll coincides with the running speed of the sheet of the first roll.

The present invention relates to an electrode connection apparatus including a transfer unit configured to transfer a start portion of a standby electrode roll in a state of gripping the start portion, a leading unit configured to move upwards in a state of gripping the start portion of the standby electrode roll transferred by the transfer unit, a first connection unit configured to fix the standby electrode roll transferred by the leading unit, a second connection unit configured to fix an end portion of a moving electrode roll, and a taping unit configured to connect the standby electrode roll and the moving electrode roll to each other, whereby it is possible to automatically connect the electrode rolls to each other during an electrode manufacturing process performed as a roll-to-roll process.

Splicing method and unit for a packaging machine, whereby a first film is spliced to a second film which is a spare film. The splicing is performed by means of an adhesive element with two opposing adhesive surfaces, one for each film, and a longitudinal adhering element. First an adhesive surface is adhered to the adhering element and said adhering element moves so that the other adhesive surface comes into contact with the second film and adheres to it. Then the adhering element is separated from said second film, the adhesive element being adhered to said second film, and the first film is caused to come into contact with said adhesive element already adhered to the second film.