Abstract: Apparatus (10) is for use in a cap applicator unit (12). The apparatus (10) comprises a spigot (14) comprising an elongate body (16) and a head (18) connected to one end of the elongate body (16), and an anvil (20) provided with a hole (22) therein, the elongate body (16) of the spigot (14) mounted in the hole (22) of the anvil (20). The size of the hole (22) of the anvil (20) is sufficiently greater than the size of the elongate body (16) of the spigot (14) to permit angular movement of the spigot (14) relative to the anvil (20). The apparatus (10) further comprises at least one tensioning device (24) and (36) arranged to provide a force tensioning the spigot (14) against the anvil (20).

Abstract: Techniques for corrugate and chipboard knocked-down case inspection and assembly are described herein. In one example, the disclosed techniques include a method to inspect and assemble a knocked-down case. In the example, a measurement of at least one aspect of the knocked-down case is obtained. A difference is determined between the obtained measurement and a standard measurement and/or a range of standard measurements. Programming of a case-handling tool is executed that is based at least in part on the determined difference. In an example, the programming is configured to adjust for and/or compensate for differences between the actual knocked-down case and a knocked-down case that is within a specification. A case-handling tool is operated responsive to the executed programming to at least partially erect the knocked-down case into an erected case.

Abstract: Discrete items are conveyed, preferably by a vacuum conveyor, in a machine direction toward a pair of rotating blades. A first intended target of folding, for instance a right portion of front and back panels of a diaper, travels up a ramp, raising the level of the intended target. A rotating blade passes under the intended target of folding, and folds the right portion of front and back panels of a diaper over. If desired, a second intended target of folding, for instance a left portion of front and back panels of a diaper, travels up a second ramp, raising the level of the intended target. A rotating blade passes under the second intended target of folding, and folds the left portion of front and back panels of a diaper over. The folded diaper then exits the folding system and travels downstream for further processing as desired.

Abstract: A paint roller manufacturing system and method are described. In an embodiment, an inner strip of material and an outer strip of material are wound about a mandrel in offset relation. The inner strip of material and the outer strip of material each comprise material that results in a final paint roller which shrinks by less than 2.5 percent of the final paint roller axial length, or which has shrinkage that varies by less +/?0.1%, upon hardening and setting. An adhesive is applied to at least a portion of the outer strip as it is wound about the mandrel. A length of fabric is wound about at least the outer strip to form a paint roller tube, and compression is applied to the paint roller tube while advancing the paint roller tube in a direction parallel to the mandrel. A precision measuring or sensing device is used to control a cutting device causing the cutting device to cut the advancing paint roller tube into pre-selected lengths prior to the paint roller tube hardening and setting.

Abstract: A machine for manufacturing flat bottom bags includes a drum for carrying along at least one blank having a flattened tubular shape in an advancing direction, a first scoring apparatus upstream of the drum for marking on the blank a first folding line which is transverse with respect to the advancing direction, a front gripper on the drum that grips a front edge of the blank on the drum, in an opening step, and and carries along the blank, a first lateral gripping means on the drum that grip the lateral edges of the blank in the region of the first folding line.

Abstract: A paint roller manufacturing system and method are described. In an embodiment, an inner strip of material and an outer strip of material are wound about a mandrel in offset relation. The inner strip of material and the outer strip of material each comprise material that results in a final paint roller which shrinks by less than 2.5 percent of the final paint roller axial length, or which has shrinkage that varies by less +/?0.1%, upon hardening and setting. An adhesive is applied to at least a portion of the outer strip as it is wound about the mandrel. A length of fabric is wound about at least the outer strip to form a paint roller tube, and compression is applied to the paint roller tube while advancing the paint roller tube in a direction parallel to the mandrel. A precision measuring or sensing device is used to control a cutting device causing the cutting device to cut the advancing paint roller tube into pre-selected lengths prior to the paint roller tube hardening and setting.

Abstract: It is aimed to provide a conveying device for absorbent articles capable of precisely sorting an absorbent article between a main conveyance path and a branch path and a conveyance method using the same. A path switching means includes a belt conveying unit with a conveying belt arranged along an annular path and configured to circulate along the annular path to be able to convey an absorbent article and a path switching mechanism configured to switch a conveyance path specified by the conveying belt between a path along which the absorbent article is transferrable from an upstream conveying mechanism to a downstream conveying mechanism and a path along which the absorbent article is guided along a sampling path from the upstream conveying mechanism.

Abstract: A nonconforming product removing unit is disposed between a folding unit and a counter ejector of a box making machine, and includes a sort-out unit that conveys a corrugated board box whose joint is judged to be good by a judging unit to the counter ejector, and on the other hand discharges a corrugated board box whose joint is judged to be bad by the judging unit. Accordingly, only the conforming corrugated board box can be conveyed to the counter ejector. Therefore, the nonconforming board box can be removed easily, without requiring complicated work of taking out the nonconforming corrugated board box from among corrugated board boxes sorted into a predetermined number of batches by the counter ejector, and re-sorting only the conforming corrugated board boxes into a predetermined number of batches.

Abstract: An inclined position of a product, leaving a nip between two folding rollers of a longitudinal folding machine, is corrected. The product is pressed into the nip between the rollers by a folding blade that can be moved up and down relative to a folding table. The product thus leaves the nip between the rollers and is transported in a direction of transport. The time of passage of a leading or a trailing edge of a product is detected at two measurement points which are spaced apart from each other and which are arranged transversely to the direction of transport of the product to be folded. Based on the times of passage that are detected by the two measurement points, and on commutation and/or data processing techniques, a deviation between a time offset detected during the passage of the corresponding product edge at the two measurement points, and a nominal time offset, is determined and analyzed.

Abstract: The present disclosure relates to a method for redirecting cut web products and/or rejecting cut web products. The method comprises advancing a plurality of cut web products along a first path and providing a redirecting or folding device for folding the plurality of cut web products and/or delivering the folded cut web products to a second path. Prior to reaching the folding device, the cut web products may be determined to be defective. The folding device can be accelerated, decelerated, or substantially stopped, such that a selected cut web product is not delivered to the second path, thereby rejecting the selected cut web product. The present disclosure additionally comprises an apparatus for redirecting and/or rejecting cut web products.

Abstract: A system and process for monitoring a continuous element being incorporated within a cigarette filter includes a light source and a photoresponsive device facing each other and on opposite sides of a measuring gap, and passing the continuous element through the measuring gap and detecting movement of the continuous element by the effect of the movement on at least one light beam present between the light source and the photoresponsive device. Individual lengths of the continuous cigarette filter rod being produced can be selectively rejected based on a determination of whether the continuous element has a break or a knot along its length.

Abstract: The present invention relates to a device for folding continuous medium including a swing arm pivotable about an axis at one end of the swing arm. The continuous medium is guided by the swing arm and accordion-folded with equal widths as a result of the swinging operation of the swing arm. The swing arm has a telescopic structure for varying the length of the swing arm over a range of a swing of the swing arm.

Abstract: A bag packaging system includes a bag packager and a defect detection device that receives bags manufactured by the bag packager and conveys the bags while checking for defects. The defect detection device includes a first conveyor belt that is arranged below the bag packager, a line sensor that is arranged adjacent to a downstream end of the first conveyor belt, and a controller. The line sensor sends a detection signal when it detects an object that is conveyed by the first conveyor belt. The controller stores the size of a proper bag that is being manufactured. The controller finds a defective bag based on the size of the proper bag, the conveying speed of the first conveyor belt, and duration of the detection signal from the line sensor. The defect detection device can detect defects in bags promptly after the bags are manufactured by the bag packaging machine.

Abstract: An apparatus is arranged to successively make plastic bags each of which has a shape of circumference. The apparatus comprises web feeding means by which a web material is intermittently fed for a length along a longitudinal feeding path. The web material comprises two or more layers of plastic film. Web cutting means is disposed along the feeding path. The web cutting means has a shape corresponding completely or incompletely to the shape of circumference of plastic bag so that the web material can be cut into the shape of circumference of plastic bag by the web cutting means whenever the web material is intermittently fed and temporarily stopped, to successively make the plastic bags with a waste kept continuous. The web cutting means comprises partially cutting means. The plastic bag has an upstream edge along which the web material is partially cut by the partially cutting means so that the plastic bag can be kept connected with the waste at the upstream edge of plastic bag.

Abstract: Known folded box gluing machines for producing folded boxes (1) from blanks comprise—a folding station (3), in which the parts of blanks provided with an adhesive strip are folded,—an adjoining transfer station (5) which is configured as a transport device and has at least two conveyer belt pairs, each consisting of an upper and a lower belt (7, 8) and a device for ejecting defective boxes (11) and—a collection and pressing device (6), in which the flat folded boxes are pressed together, in order for the adhesive to bind.

Abstract: A cushioning conversion system and method for transferring a dunnage pad are disclosed. The conversion system includes a cushioning conversion machine and a pad support. The conversion machine produces cushioning dunnage pads and discharges the pads in a predetermined discharge direction. A pad support is movable between a pad receiving position and a pad discharge position. In the pad receiving position, the pad support is oriented relative to the conversion machine to receive thereon dunnage pads discharged from the conversion machine in the discharge direction. In the pad discharge position, the pad support is tilted relative to horizontal for discharge of the dunnage pad from the pad support.

Abstract: There is provided a paper cutting apparatus for a folder, the folder for a web rotary press being provided with a forming roller pair and at least one nipping roller pair on a downstream side of the forming roller pair in a paper passage between a former and a folding cylinder group, and provided with a paper jam detector S for detecting an occurrence of a paper jam at least in the folding cylinder group, including a first cutter A provided so as to be capable of cutting a paper 1 running between the forming roller pair under the former and a nipping roller pair just on the downstream side of the forming roller pair; a second cutter B provided so as to be capable of cutting the paper running between the folding cylinder group and the nipping roller pair just on the upstream side of the folding cylinder group; and control unit D which receives a paper jam signal generated from the paper jam detector S and sends a cutting signal to the first cutter A and the second cutter B.

Abstract: Apparatus for producing (folding) cartons or for closing the same by applying adhesive strips (13) to folding flaps (11) during an upward movement of the cartons (10) by a closing conveyor (21), the closed cartons (10) being transferred in the region of an upper transfer station (33) to a removal conveyor (22) and defective cartons (43), previously detected by monitoring, being able to be conveyed past the removal conveyor (22) into the region of a transfer station for such defective cartons (43).

Abstract: A folder for processing a stream of printed signatures from a printing press and related method. The signatures have a desired path with a path edge and each signature has a lead and trail edge. The folder comprises a plurality of sensor sets, each sensor set for determining if the lead and/or trail edge of the signature deviates from the path edge by more than a certain tolerance.

Abstract: The present invention relates to a method and an apparatus for producing foil bags, wherein two foils are supplied for forming the side walls of the foil bag, wherein furthermore a bottom foil is supplied to have holes punched thereinto, said holes being spaced apart in the supply direction of the bottom foil at a distance corresponding to the width of a foil bag, wherein a measurement is carried out during the supply process for determining whether punched holes have been produced, and wherein subsequently the side foils and the bottom foil are placed one upon the other and connected to each other, and the foil layer sequence is then cut to form individual foil bags.

Abstract: The method is disclosed for checking the accuracy of folding a parallelepiped box made from a cardboard blank (1) comprising four adjacent panels (Pa, Pb, Pc, Pd), at least some edges of the panels being associated with flaps (Ra1, Ra2, Rb1, Rb2, Rc1, Rc2, Rd1, Rd2) for closing the top and bottom surfaces of the box. Slots (5, 6) with parallel edges are formed between the adjacent flaps. In the method, the spacing between the edges of the slots (5, 6), produced between the flaps (Ra1, Rd1 Ra2, Rd2) when the outer panels are folded together, is compared with a predetermined standard spacing between the edges of the slots (5, 6) to determine whether the folded box is defective.

Abstract: A cushioning conversion machine located below a work table includes a stock supply assembly, a conversion assembly for converting the stock material into a cushioning product and providing it through a machine exit, and a pad transferring system including an upper series of rollers arranged in a path, a lower series of rollers arranged in a path and a motor for powering the rotation of the drive elements, the upper and the lower series of rollers defining a path therebetween leading from the machine exit to a passage in the work table.

Abstract: A method and system for determining the bonding quality of a bonded area of a flapped boxmaking blank in a boxmaking apparatus at an assembling station of a production line, where opposite end portions of the blank are bonded together with confronting edges of companion end flaps defining a required gap, in terms of the outline of the gap. The quality determination is accomplished by irradiating sheetlike light onto the bonded area across the gap, forming an image of the irradiated light as a light image line composed of discrete segments which are arranged along a reference line for the flap portions and include at least one line segment located off the reference line, computing a ratio of a length of the off-line segment to the entire length of the light image line to obtain a width of the gap, and comparing the width of the gap with a preset reference value.

Abstract: An apparatus and method for inspecting skived glue, hemming and skew, and backfold of cartons by means of real time image comparison. The apparatus comprises channel sensors, means for measuring conveyor travel distance, a system controller coupled to the channel sensors, a memory for storing images, a processor coupled to the outputs of the system controller and the memory and a bad carton locator means. A known good carton is passed through the channel sensors and a reference synthetic image is stored in a memory. A test carton is passed through the channel sensors producing a real time image which is compared to the stored reference synthetic image for detecting defects.

Abstract: To improve the efficiency of powerful packaging machines for cigarettes or the like, the blanks (10) for wrapping the cigarettes or the like are monitored in respect of correct formation whilst being conveyed along a blanks path (27) to a revolving folding unit (28). Bifurcate photoelectric barriers are positioned on side regions of the blanks path (28) as monitoring units (40, 41). These barriers monitor the state of folding flaps (19. .24), arranged at the side, of the transported blanks (10).

Abstract: A cushioning conversion system includes a cushioning conversion machine which converts stock paper into a plurality of cut pads, and a conveyor system positioned to receive pads produced by the cushioning conversion machine and including a conveyor which conveys the pads away from the machine and at least one moveable gate having an open position allowing a pad to pass therethrough and a closed position for stopping progress of a pad along the conveyor when there is insufficient space on the conveyor downstream of the gate to permit a pad to progress substantially through the gate.

Abstract: A cushioning conversion system includes a cushioning conversion machine which converts stock paper into cut pads, a conveyor system positioned to receive a pad produced by the cushioning conversion machine and to move the pad to a staging area, the staging area including a sensor for sensing the presence of a pad in the staging area and generating a representative signal, and a pad retrieval system for retrieving the pad from the staging area, wherein the cushioning conversion machine produces a pad when the representative signal indicates that a pad is not present in the staging area and the retrieval system retrieves a pad when the representative signal indicates a pad is in the staging area.

Abstract: A flap opening apparatus wherein envelopes are sequentially conveyed past a jet nozzle, which delivers timed blasts of air to open the flaps of each envelope. A computer controller tracks the position of the envelopes by a shaft encoder, and activates the jet nozzle when each envelope is correctly positioned. The opened flaps of the envelopes are held in an open position by a plate so that mail materials may be inserted into the envelopes.

Abstract: Machine for folding a web (3) in a zigzag manner includes a transport mechanism (2) for the web (3), a receiving device (5) at the bottom for collecting the folded web, a folding mechanism (4) mounted between the transport mechanism (2) and the receiving device (5) and a detection device (19,20) to detect improper folds mounted under the folding mechanism (4), wherein the machine includes a device arranged to move the web (3) backward in the folding mechanism (2) and a control device (22) connected to the backward moving device and the detection means (19,20), so that, at least upon a first detection of an improper fold, the web (3) is moved backward in the folding mechanism (4) by said backward moving device over such a distance that the improper fold is entirely unfolded and so as to afterwards allow again for the normal forward movement of the web (3) through the folding mechanism (4).

Abstract: An applicator and accompanying feed mechanism attaches spouts and other fitments to paperboard cartons and the like in automated packaging equipment. The applicator features a rotatable and translatable anvil having a plurality of radially extending lobes. A mandrel or other engagement mechanism on each lobe engages and holds spouts for attachment to a container. The anvil inserts a spout into a container hole, and an ultrasonic sealer ultrasonically vibrates the carton wall against the anvil to weld the spout to the carton.

Abstract: A web separator is provided that cuts a web at predetermined separation locations. Downstream of the cutting, the web is folded at predetermined fold locations. A continuously swinging director, downstream of the folding, guides advancing sections of web to opposing fold edges of a supported zig-zag stack. The web is driven into the continuously swinging director by a driving member. The driving member is deactivated selectively by a clutch, while other elements of the separator continue to operate. A central drive motor may be interconnected with each of the drive member, swinging director, folding and support elements. Fold and separation locations may be determined by a bar code detector and selectively operable upper and lower conveyor belts may be disposed below the supported zig-zag stack.

Abstract: A quality monitoring system employing vision processing equipment to photograph at least one of the edges of every folded-over box blank as it is conveyed through a box forming machine is used to determine in-line whether the blanks, when unfolded, will produce square boxes having essentially all 90.degree. angles between adjacent sides. The folded-over blanks have a manufacturer's gap between adjacent box side panels. The electronic images are electronically digitized and the resulting data processed by computer to calculate critical parameters of the folded-over blank, including gap width, longitudinal taper of the gap width, and alignment of the lateral edges of the panels surrounding the gap in relation to the lateral edge of the gap. Comparison of these measured critical parameters with corresponding parameters for an idealized box stored in the computer indicates the quality of the formed box and whether the quality falls within acceptable parameters.

Abstract: A phase difference is determined between a signature detection sensor signal and a reference timing signal from a rotary encoder and displayed as a deviation amount to determine a tendency of the deviation, and the printing press can be adjusted according to the tendency to prevent paper jamming.

Abstract: A rotary accumulator for folded beams of corrugated paperboard with adhesive applied thereto, such as pallet stringers or decking members, comprises a conveyor for feeding the beams longitudinally with spaces therebetween, a generally circular array of beam holders mounted to a rotary framework for receiving each beam in one holder, for holding such beam in a desired configuration for a finite time to allow adhesive applied thereto to cure, and for releasing such beam thereafter, a mechanism for indexing the holders in a generally circular path, and a longitudinal member for removing each beam from the beam holder holding such beam when such beam engages such members as the holders are being indexed. The mechanism is powered by a pneumatically powered piston-cylinder mechanism, which drives an escapement mechanism, or by an electric motor. Certain sensing and detecting devices are provided for controlling the mechanism.

Abstract: In apparatus for forming cut lengths of tube by winding one or more strips of material into a continuously advancing spiral wound tube and periodically cutting off lengths of the tube, lengths of tube containing splices present in the strips are rejected at a rejection point downstream from the cut-off point by monitoring the strips for splices prior to winding, waiting until enough strip has passed the splice monitoring point to extend from the splice monitoring point to the rejection point, and rejecting the length of tube at the rejection point when that amount of strip has passed the splice monitoring point.

Abstract: In a spiral tube winder, the plies going to the winding mechanism are monitored to make sure that no ply is broken. If any ply breaks, the machine is stopped so that the broken ply does not become entangled in the apparatus, especially in the glue applying portion of the apparatus. The ply break detection system is automatically activated for each ply lane that is in use so that plies can be added while the machine is in operation, with the result that the ply break protection for each such added ply comes on automatically after that ply has been added.

Abstract: In apparatus for forming cut lengths of tube by winding one or more strips of material into a continuously advancing spiral wound tube and periodically cutting off lengths of the tube, lengths of tube containing splices present in the strips are rejected at a rejection point downstream from the cut-off point by monitoring the strips for splices prior to winding, waiting until enough strip has passed the splice monitoring point to extend from the splice monitoring point to the rejection point, and rejecting the length of tube at the rejection point when that amount of strip has passed the splice monitoring point.

Abstract: Apparatus for removing defective knocked down carton blanks, from a carton erecting machine. In one embodiment opposed sets of tractors for clamping the selected unit and driving it from the conveyor line with moving tractive belts. A sensing device detects carton blanks to be ejected by determining if they can be erected by the machine. Non-conforming blanks are returned to an unerected condition and a control device activated by the sensing device controls activation of the ejecting mechanism to quickly and automatically eject the defective carton blank.

Abstract: Conventionally, large-volume carton packs are constructed in such a way that two mutually opposite walls (bottom wall 19 and cover wall 20) are formed from folding tabs (15 to 18) overlapping one another. The folding tabs are connected to one another by adhesive bonding. Furthermore, an adhesive strip (51) can be affixed in the region of a parting line (25) between the outer tabs (17, 18) butting against one another. The connection between the folding tabs or the arrangement of the adhesive strip (51) may be defective. Thus, according to the invention, in order to check the carton pack (10) in terms of a correct construction, pressure is exerted on the walls (bottom wall 19 and cover wall 20) formed from folding tabs, in such a way that any inadequate connections result in a springing open of the respective walls. The change in shape of the carton pack (10) is detected by sensors, especially by photosensors (87, 88).

Abstract: Apparatus for removing defective knocked down carton blanks, from a carton erecting machine. In one embodiment opposed sets of tractors for clamping the selected unit and driving it from the conveyor line with moving tractive belts. A sensing device detects carton blanks to be ejected by determining if they can be erected by the machine. Non-conforming blanks are returned to an unerected condition and a control device activated by the sensing device controls activation of the ejecting mechanism to quickly and automatically eject the defective carton blank.

Abstract: A method and apparatus is disclosed for flattening perforated web fed materials so that when cut into sheets they stack easily without a tendency to fall to one side. The method and apparatus is particularly adapted to be installed on a web fed printing press equipped for forming perforations in the printed web, the apparatus being located between the perforating and sheeting and stacking stations of the press.

Abstract: Apparatus for aligning a wicketer frame with an edge of a tubular or semitubular plastic web. The positions of the edges of the web are sensed and the wicketer frame is transversely displaced in response to and in dependence on the sensed deviation of the edges of the web from an initial position. The wicketer frame is provided with at least one transverse rail, which is supported on rollers or sliding surfaces of an underlying carrying frame to permit transverse movement of the wicketer frame relative to the web. The wicketer frame is connected by a beam to an end frame, which carries the downstream end of a stacking conveyor and is supported on a base frame. The end frame is longitudinally displaceable and is rotatable through a small angle relative to the base frame. A rack and pinion arrangement is provided for transversely moving the wicketer frame.

Abstract: A method and apparatus for operating a diaper-producing machine where a series of unfolded diapers are advanced along a path containing a plurality of stackers each having a folding blade, the apparatus having means for periodically altering the movement of one blade to permit diaper movement past that stacker to a subsequent one, thereby continuing stacking while a previously completed stack is removed.

Abstract: In a bag-making macine where a base is formed on an end of a tube section by folding and successively folded tube sections are conveyed transversely at intervals with the main part of each tube section flattened and its folded base perpendicular thereto, photocells are provided to scan the leading and trailing folded edges of each base. The photocells and a light source are disposed on opposite sides of each base and an arcuate disc rotatable about its center of curvature at a circumferential speed equal to the conveying speed of the tube sections bridges the intervals between the bases of successive tube sections so that the photocells remain unexposed unless the bases are deformed.

Abstract: Bag sections that pass through a machine are scanned as to their spatial positions within the machine. The measuring points have been arranged at distances corresponding to the stroke of the machine, so that it is possible to intervene in the operation of the machine when a deviation from a given nominal position occurs, before a stopper formation occurs. Each bag section that comes into the machine triggers a subsequent comparison of nominal and actual values in a manner such that the signals of defects that are generated by the lack of work pieces, are neutralized.

Abstract: A method and apparatus for transversely folding diapers which includes advancing a series of unfolded diapers along a horizontal path, orbiting a tucker blade for each diaper through said horizontal path to fold the diaper and deliver the now-folded diaper to a vertical path, and displacing the orbit of the tucker blade upwardly out of the horizontal path whenever a defective diaper appears in the series.

Abstract: Case erector and bottom sealer apparatus having a pick up assembly for grippingly engaging a flat folded case blank on the top of a plurality of case blanks in vertical stacked relationship and elevating and moving the picked up blank forwardly, an infeed conveyor assembly for receiving the picked up case blank in its forward position and moving it to an erector station, an erector assembly at the erector station for grippingly engaging opposite sides of the blank and opening the case blank, folder assemblies movable between retracted and folded positions for first folding the bottom minor flaps of the erected blank and then partially folding the bottom major flaps to retain the bottom minor flaps in a folded condition, a walking stick assembly for moving the erected case from the erector station to a compression station, a glue gun assembly for applying adhesive to the bottom minor flaps as the erected case is moved to the compression station, a compression assembly at the compression station to complete the

Abstract: Apparatus for applying gum to spaced portions of an envelope is provided with means for sensing the absence of an envelope on a conveyor belt feeding the envelopes to the gummer apparatus. In response to sensing the absence of an envelope on the conveyor belt, a gummer cylinder containing spaced gummer pads for applying gum to the flap and body of the envelope is precluded from rotating by disengagement of a clutch between the gummer cylinder and its drive and simultaneous contact of a brake with the cylinder.

Abstract: A system for handling and transferring plastic bags between folding stations including control means for monitoring the folding accuracy and alignment of each bag while advancing along a predetermined path and means responsive to the control means for diverting each improperly registered bag from such path.

Abstract: An air operated electrically controlled machine using constant speed motors and known per se is provided with electronic counter and clock pulse generator control which eliminates uneven folding and over and under folding characteristics of the known machine and wherein separate photocell circuits control the folding operation while enabling much longer lengths of materials to be folded and eliminating jamming characteristics of the known machine.