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 bag-making and packaging machine includes a film supply unit that supplies film to a bag-making and packaging unit. The film supply unit has a film roll holding unit that rotatably holds a first film roll, a film temporary placement member on which a vicinity of a leading end portion of a first film wound into the first film roll is manually temporarily placed when attaching the first film roll to the film roll holding unit, a leading end portion detection sensor configured to detect that the leading end portion of the first film is positioned in a prescribed position, and a controller configured to control a rotating mechanism to convey the first film along a predetermined conveyance path until the leading end portion detection sensor detects that the leading end portion of the first film is positioned in the prescribed position.

A bag-making and packaging machine has a film supply unit that supplies film to a bag-making and packaging unit. The film supply unit has a film conveyance mechanism that conveys a first film so that a trailing end portion of the first film heads toward a film splicing position for splicing to a leading end portion of a second film, a first sensor detecting a mark on the first film, a second sensor detecting the mark at downstream, and a controller for the film conveyance mechanism. The controller judges, based on detection of the second sensor, that the trailing end portion of the first film has reached the splicing position and stops conveyance of the first film. The controller controls the conveyance mechanism so that the conveyance speed of the first film before the detection of the mark by the first sensor is faster than the speed after the detection.

A splicing assembly for rolled sheet material, including first and second shafts for support of sheet material and a drive assembly for selectively dispensing sheet material. The assembly further includes a splicing apparatus for uniting a replacement with a winding down roll, and an egress guide assembly for receipt of dispensed sheet material exiting the splicing apparatus and passage of same intermediate the shafts. The splicing apparatus includes first and second sealing elements, and first and second carriages adapted and disposed for translation towards their respective sealing elements, a free end portion of sheet material of the replacement roll supported upon the first/second shaft for selective retention by the second/first sheet material carriage, and for translation to, and thereafter with, a portion of sheet material of the winding down roll supported upon the second/first shaft for urged combined engagement with a corresponding sealing element.

The splicing device for splicing a trailing edge of a first web material to a leading edge of a second web material includes members defining a feed path of the web material. The device also includes a first cutting member and a second cutting member, cooperating with the first cutting member. One of the two cutting members is provided with a movement transverse to the feed path of the web material, to move the cutting member from an operating position, in which it is in front of the other cutting member, to an idle position, withdrawn with respect to the feed path of the web material.

The present invention relates to a method for splicing an upstream section and a downstream section of a multi-layered laminated sheet material wherein each section of the material comprises at least three layers each having first and second surfaces and wherein the at least three layers comprise first and second outer layers and at least one inner layer located between the first and second outer layers, comprising the steps of a) splicing together the upstream and downstream sections of both the first and second outer layers with a splicing material; b) removing the first outer layer from the multi-layered laminated sheet material to expose a surface of an inner layer; c) splicing the upstream and downstream sections of the exposed inner layer with a splicing material; and d) applying a replacement first outer layer to the exposed surface of the inner layer. A spliced multi-layered laminated sheet material produced according to the method is also provided. Also provided is an apparatus for splicing two sections of a multi-layered laminated sheet material wherein each section of the material comprises at least three layers each having first and second surfaces and wherein the at least three layers comprise two outer layers and at least one inner layer located between the two outer layers, the apparatus comprising: a first splicer configured to apply a splicing material to the two outer layers of the multi-layered laminated sheet material, a delaminator configured to remove a first outer layer, a second splicer located downstream of the delaminator configured to apply a splicing material to the exposed inner layer and an applicator located downstream of the second splicer configured to reapply an outer layer to the exposed inner layer.

A coil replacing device. Material tapes output by a first unreeling assembly and a second unreeling assembly can be alternately used as a working materials tape and a spare materials tape. When the unreeling of the working material tape by the first unreeling assembly is about to be finished, a first cutting assembly cuts off the working material tape fixed by a fixing mechanism and a first positioning assembly, and the spare material tape unreeled by the second unreeling assembly can be aligned with the working material tape fixed by the first positioning assembly. Then, a swing assembly drives an adhesive attaching driver to swing from an adhesive preparation position to an adhesive attaching position, and an adhesive attaching mechanism drives two suction plates to be folded, connecting the spare material tape with the working material tape to form a new working material tape.

A coil replacing device. When a first unreeling assembly at an unreeling station finishes unreeling, a fixing suction member can be driven by a first driver abutting against a first suction member clamping a working material tape, a first cutting assembly cuts off the working material tape, and the cut working material tape is sucked by the fixing suction member. Then, a vertical plate slides to make a second unreeling assembly enter the unreeling station, a material tape sucked by a second suction member will also enter the unreeling station as a spare material tape, and the first unreeling assembly will be removed from the unreeling station. The fixing suction member is driven by the first driver to abut against the second suction member, so as to realize coil replacing, and the first unreeling assembly can be loaded with a new material tape to serve as a spare material tape.

A method for cutting and connecting two bands end to end and which are at a stop, namely a first band ensuring the feed, and a second replacement band, in an unrolling machine including a cutting and connecting device including two connection assemblies arranged symmetrically with respect to a cutting and connection plane is provided. Utilizing the unrolling machine the method includes preparation of the second band, then immobilization of the bands in the plane, of simultaneous and transverse cutting of the latter, of disengagement of the cut portions not to be connected, and of end-to-end connecting of the cut portions thereof to be connected. A cutting and connecting device and a machine enabling the implementation of the method is also provided.

A splicing tape management system includes, in executing properly the management of a time limit of a splicing tape, a first storage section configured to store an identification code of a splicing tape for splicing a first carrier tape and a second carrier tape together and a usable time limit of the splicing tape while associating them with each other, and a management section configured to manage the use of the splicing tape based on the identification code and the usable time limit that are stored in the first storage section. The usable time limit is a timing when the use of the splicing tape is to be halted, the timing being determined based on a production time and a usable period after production of the splicing tape or based on a starting time in use and a usable period after starting time of the splicing tape.