Abstract: A machine for filling a tertiary container with secondary containers is provided. The machine includes a frame and a tray loading station positioned to receive a plurality of streams of the secondary containers. The machine also includes a front gate at an upstream end of the tray loading station, the front gate moveable between a first position, in which the secondary containers are obstructed from passing downstream, and a second position, in which the secondary containers are not obstructed. The machine further includes a back stop proximate a downstream end of the tray loading station, the back stop moveable between a first, upstream position and a second, downstream position. The tray loading station is sized such that when a first row of secondary containers is positioned against the back stop in the first position, a portion of an upstream row of secondary containers is positioned directly above the front gate.

Abstract: A blank for forming a tray includes a bottom panel, end panels, and side panels. A first divider panel assembly is defined within the bottom panel and an end panel. The first divider panel assembly includes an upper panel defined within the end panel and an inner panel defined within the bottom panel. The upper panel is configured to be at an angle to the bottom panel, and the inner panel is configured to be at an angle to the end panel in an erected configuration. A second divider panel assembly is defined within the bottom panel and a side panel. The second divider panel assembly includes an upper panel defined within the side panel and an inner panel is defined within the bottom panel. The panels of the second divider panel assembly are configured similarly to the panels of the first divider panel assembly in the erected configuration.

Abstract: An apparatus for making a film bag with reinforced bag seams includes a film extruder that produces a continuous tube of film. A flattener produces a continuous web of flattened film which has an upper surface and a lower surface. A fold maker has a receiving portion positioned above the web and a displacing portion is positioned below the web that moves cyclically upward to a first position to locate a portion of the web into the receiving portion, thereby forming a fold. A fold retention device prevents the fold from opening. A presser flattens the fold against the web. A sealer seals through the fold, forming a reinforced bag seam. A cutter severs a sealed portion from an unsealed portion of the web. A transport mechanism moves the film from the extruder, through the flattener, into the fold maker, beneath the presser, into the sealer and to the cutter.

Abstract: A tray forming apparatus forms a blank into a tray having a double glued side wall construction for providing a desirable strength to the tray. A platen drives the blank through a forming rails which fold the blank into a partially formed tray having bottom, end and side walls, and inside corner supports formed about the platen. The platen is retracted prior to folding arms further extended portions of the partially formed tray. A compression plate and the folding arms are biased against adhesive portions of the tray for forming a fully formed tray having a double glued side wall construction.

Abstract: A machine for intended use in feeding and completing a partially formed carton is disclosed. In one embodiment, the machine includes an overhead conveyor with selectively actuated, depending lugs that engage and convey the carton in a first direction while a first flap on a lid is folded and sealed. A takeaway conveyor includes selectively actuated, upstanding lugs that convey the carton in a second direction generally perpendicular to the first direction while second and third flaps are folded and sealed. The lugs on each conveyor may be closely spaced or overlapping to allow for selective actuation at a desired instant without the need for timing the corresponding chain or the carton feed to the machine. A diverter located at a transition between the forward and return runs of the overhead and takeaway conveyors actuates the lugs in a controlled fashion. Related methods of feeding and forming cartons are also disclosed.

Abstract: A tray forming apparatus forms a blank into a tray having a double glued side wall construction for providing a desirable strength to the tray. A platen drives the blank through a forming rails which fold the blank into a partially formed tray having bottom, end and side walls, and inside corner supports formed about the platen. The platen is retracted prior to folding arms further extended portions of the partially formed tray. A compression plate and the folding arms are biased against adhesive portions of the tray for forming a fully formed tray having a double glued side wall construction.

Abstract: The device for erecting flat-folded tubular blanks supplied in flat-folded form comprises a collecting group provided with first gripping means which are mobile between a pick-up station of the single tubular blanks from a store and an opening station of the single tubular blanks. An opening group is arranged in the opening station and provided with second gripping means for gripping the single flat-folded tubular blanks at a second surface thereof, opposite the first surface engaged by the first gripping means. The second gripping means are mobile between a gripping position of the single tubular blanks and a distanced opening position thereof. A folding organ is destined to progressively engage a free side of the single tubular blanks during the course of opening, for completing the erecting of the tubular blanks.

Abstract: Folding device for folding paper, cardboard, plastic, corrugated cardboard or similar material blanks running in a folding-gluing machine: a tool (30) installed above the passage plane for the blanks for folding a front flap (21?) of a blank (20?), in which the folding tool (30) is movable alternately between an initial position where the folding tool (30) is able to go through the passage plane for the blanks without interacting with said blanks and a final position where the folding tool (30) is able to press against a lower face (20b?) of the blank (20?) to fold the front flap (21?) into the space located above the passage plane for the blanks.

Abstract: An apparatus for forming a tray from a blank of sheet material is provided. The apparatus includes a platen configured to move along a path between a first position and a second position to drive the blank downstream from the first position and a first folding arm configured to fold an outside corner support member of the blank to form the blank into a partially formed tray including at least a portion of the outside corner support member being substantially parallel to the bottom panel. The apparatus further includes a fixed plate and a movable plate spaced from and movable with respect to the fixed plate. The fixed plate and the movable plate define a passage therebetween. The fixed plate guides the outside corner support member through the passage to a position adjacent a side panel and/or an end panel.

Abstract: An apparatus automatically forms a paperboard blank into a container having a double glued side wall construction for providing an enhanced strength to the container. A platen drives the blank through mechanically powered forming rails for an initial folding of the blank into a partially formed container having a bottom, end and side walls, and inside corner supports. A compression plate and folding arms are biased against adhesive portions of the partially formed container for forming a fully formed container having a double glued side wall construction.

Abstract: An apparatus automatically forms a paperboard blank into a container having a double glued side wall construction for providing an enhanced strength to the container. A platen drives the blank through mechanically powered forming rails for an initial folding of the blank into a partially formed container having a bottom, end and side walls, and inside corner supports. A compression plate and folding arms are biased against adhesive portions of the partially formed container for forming a fully formed container having a double glued side wall construction.

Abstract: An apparatus in a folding box gluing machine has a catch hook mounted such that it can rotate about an axis in order to initiate a leading fold in a product. The apparatus further has a restoring device for the catch hook. The restoring device has at least one elastic element, the axis of the catch hook is connected to the elastic element by a rolling belt.

Abstract: An apparatus for sealing the bottom of a bag includes a frame through which a bag to be folded is longitudinally advanced. The apparatus includes a pair of cooperating grippers carried by a reciprocably movable gripper carrier. The grippers are operated to opposite edges of the bag, and laterally tension the bag. The apparatus includes a vertically reciprocable fold plate which then is moved downwardly to engage and downwardly fold a leading end portion of the bag. Adhesive is applied thereto, and the bag advanced, by movement of the gripper carrier, for advancement of the folded bag to at least one pair of intermittently-driven nip rollers. The grippers are released, and the nip rollers thereafter operated to compress and complete sealing of the bag bottom.

Abstract: Herein described is a device for closing the rear flap in a self-dimensioning machine for closing the upper flaps of parallelepiped boxes of the type comprising a base with support surface for the boxes, a couple of drive belts that can be motorised placed at the two sides of said support surface and that can be brought close to each other to make a drive engagement with the sides of the boxes and a head above said support surface, that carries devices for closing the front, rear and side flaps of the boxes and can be commanded to descend from a rest position to engage the above-mentioned devices with the upper flaps of the boxes and to close them.

Abstract: An apparatus and method for automatically forming at least two sheets of material into an article, such as a flower pot cover, is provided. The apparatus includes a first roll of sheet material, a second roll of sheet material, a female die and a male die. A first sheet of material and a second sheet of material are automatically formed from the first and second rolls of sheet material, respectively, and the first and second sheets of material are positioned between the male die and the female die. The male and female dies are shaped such that at least a portion of the male die is receivable in the opening of the female die to form the article. The formed articles are automatically stacked.

Abstract: A gluing machine has, for transporting the blanks therethrough a roller belt mounted upon a roller cheek and an upper belt mounted upon a roller rail, both the roller cheek and roller rail being shiftable transversely to the direction in which the blanks are conveyed through the machine. The roller cheek is coupled to the roller rail by an endless cable or belt which has a lower loop extending transversely below the roller cheek and an upper loop above the roller rail. The roller cheek is rigidly connected to one strand of the lower loop while one strand of the upper loop is clamped to the roller rail.

Abstract: An apparatus and method for automatically forming at least two sheets of material into an article, such as a flower pot cover, is provided. The apparatus includes a first roll of sheet material, a second roll of sheet material, a female die and a male die. A first sheet of material and a second sheet of material are automatically formed from the first and second rolls of sheet material, respectively, and the first and second sheets of material are positioned between the male die and the female die. The male and female dies are shaped such that at least a portion of the male die is receivable in the opening of the female die to form the article. The formed articles are automatically stacked.

Abstract: A wrapping wheel of a continuous cigarette packing machine has at least one seat for a respective group of cigarettes having two end surfaces and enclosed in a tubular wrapping having two projecting tubular end portions, each having two minor walls; the wheel moves each end surface along a relative path crosswise to the relative two minor walls, which are each folded onto the end surface by a relative folding device, which has an outer surface tangent to the end surface, and is mounted for rotation about a respective axis converging towards a plane defined by the path traveled by the end surface.

Abstract: A container erecting apparatus and methods are provided which advantageously increase the efficiency and production speed of erecting and sealing containers. The apparatus preferably includes a dispenser positioned to dispense one of a plurality of collapsed containers to be transported along a first predetermined path of travel and collapsed container erecting means positioned downstream from the dispenser for erecting the collapsed container. The apparatus also includes a first bottom panel folder and a container advancer positioned downstream from the container erecting means along the first predetermined path of travel. A second panel folder is positioned downstream and on a second predetermined path of travel which is transverse to the first predetermined path of travel.

Abstract: An apparatus for bending a box sheet along a fold formed at a predetermined position in the box sheet comprising a hook which can hang a tip of the sending box sheet, a sensor which can detect said tip of the sending box sheet, and a lifting means which can lift a part between said tip and a first fold of the sending box sheet up, wherein a tip of said hook is positioned above a sending route of the box sheet, and wherein, when said sensor detects said tip of the sending box sheet, said lift means can lift said part between the tip and the first fold of the sending box sheet up to said position of said hook.

Abstract: The cardboard blanks for conversion into hinged-lid packets for arrays of cigarettes are dimensioned and configurated in such a way that an elongated reinforcing strip at the inner side of the front panel of the lid is longer than the front panel. Those terminal sections of the reinforcing strip which extend beyond the ends of the front panel in a blank are bent prior to or during the folding of the reinforcing strip against the inner side of the front panel so that they do not adversely affect the configuration of the lateral panels of the lid and the appearance of a finished packet because the lateral panels are not caused to bulge outwardly.

Abstract: The device for turning a front panel of a platelike workpiece within a folder-gluer comprises a retaining plate 20 extending across and somewhat above the traveling plane of the workpiece and a series of lifting fingers 30 positioned transversely below the travelling plane and somewhat upstream of the retaining plate 20. The lifting fingers are actuated by a piston from a resting position below the travelling plane to a raised slanted raised position, at the arrival of the blank's front panel. The front panel includes a partially separated flap that must be parted. The device also comprises at least one pusher 40 that is substantially perpendicular to the plate 20, the pusher 40 being actuated by an actuator 44 in order to separate the flap when the panel reaches maximum height against the plate 20.

Abstract: A machine for forming a variety of different sturdy, stackable three-part fiberboard containers having a depth dimension greater than their width dimension, and which are suitable for holding bags filled with liquid. The machine includes a slidable, removable mandrel which cycles between a fiberboard hopper area and a container forming compression area. Each of two side bins provides a fiberboard end panel which comes into contact with independently slidable edge picks on the mandrel. Just before the mandrel cycles forward, the edge picks push the fiberboard end panels forward where they are bent by the action of two folding elements. Meanwhile, a fiberboard body matt is brought into position in front of the retracted mandrel from an overhead feed unit. Adhesive material is sprayed onto selected parts of the body matt as it is placed into position in front of the mandrel.

Abstract: An apparatus for manufacturing a paper protector comprises an upper mold, a lower mold, and a central mold. The lower mold includes a frame section and support surface, while the upper mold includes a peripheral rim and guide projections fitted into the lower surface of the peripheral rim.

Abstract: Automated apparatus for forming paperboard packaging from an integral paperboard blank includes a blade for gathering a central portion of the paperboard blank, causing the width of the blank to contract. A reciprocating mandrel rams the blank into a hollow tubular former having an opening of reduced size, causing portions of the blank to form side walls properly positioned with respect to a floor portion of the blank. Pistons within the mandrel apply pressure to overlapping portions of the formed blank, to seal those portions together.

Abstract: A tray forming apparatus and method are provided which advantageously increase the efficiency and production speed of tray-type containers formed thereby. The apparatus preferably includes a loader for loading one of a plurality of blanks to be transported along a predetermined path of travel and front and rear panel lifters positioned downstream from the loader for foldingly lifting front and rear panels of the one blank upwardly and inwardly during travel along the predetermined path. Adhesive applicators preferably are positioned adjacent the folders for applying adhesive only to selected portions of the folded front and rear panels of the one blank. Side panel folders are positioned downstream from the front and rear panel folders and the adhesive applicators for folding side panels of the one blank upwardly and inwardly into abutting contact with the selected portions of the folded front and rear panels having adhesive applied thereto.

Abstract: An apparatus for periodically feeding a packaging machine with semi-finished packages formed from flat blanks (2), provided with a magazine (6) for storing such blanks (2), a feed path (11) extending in a feed plane (13) with a pair of feed dogs (16), spaced from each other at a distance corresponding to the size of the blank (B), periodically entering the feed path. In cooperation with a transfer apparatus (24-34) reciprocally moving in the feed direction (A) the pair of feed dogs (16) shapes a blank (2) withdrawn from the magazine (6) to a semi-finished package suitable for being filled, and then feeds the semi-finished package to stations in the packaging machine where it is filled and completed. To prevent faulty transfers or deposits, the blanks (2) are stored within their magazine (6) in an upright orientation such that those blank sections (B,F) first entering into the feed path (11) extend above the feed plane (13).

Abstract: An article of manufacture, such as letter envelopes, paper bags, shipping uches, and the like is manufactured continuously on a production line that includes a back folding or so-called zig-zagging station which folds back one of the bottom flaps, first in a direction opposite to the continuing feed advance and then in the direction of the feed advance, whereby the formation of so-called bed bottoms or stand-up bottoms for these articles is facilitated. A cross strip (43) of a front or back portion of the article and respective precreases are used as a folding arm and fold lines in the formation of the zig-zag fold.

Abstract: Unitary blank includes a shroud blank and a tray blank connected by webs therebetween. The unitary blank is folded along a first line of demarcation so that the web overlaps the shroud blank, then along a parallel second line of demarcation so that the tray overlaps the web and the shroud. End portions are then folded toward a center line running perpendicular to the lines of demarcation to form a unitary preform for a two part shipping and display container. According to one embodiment the tray blank is provided with handles and the unitary blank is folded so that the tray blank is outside the shroud blank.

Abstract: A pack for cigarettes and a process and apparatus for the production thereof is described. Due to several reasons (cigarette) packs quite often have greater (inner) dimensions than the pack contents (cigarette block 23). In order to fill a cavity formed hereby within the pack, a filling piece (39) is provided which is formed from a flat blank (40) folding up outer blank portions. The filling piece is formed to have a three-dimensional shape by being displaced in a folding shaft (57) with laterally arranged folding members. The filling pieces (39) produced in this way are conveyed along a filling piece track (78) and are introduced into a block track (79) in transverse direction so they can each be united with a cigarette block (23).

Abstract: A carton flap opening assembly for use in a carton conveying apparatus having a frame and a conveyor. The assembly includes a horizontally disposed arm having a mounting portion at one end and a flap engaging portion extending therefrom. The flap engaging portion has a generally planar trailing edge section at its outer end, and a depending arcuate leading edge portion with an upwardly extending end section therebehind. A rotating mechanism has mounting means supporting the mounting portion of the arm for rotation of the arm about a vertical axis spaced to one side of the conveyor path. A vertical motion mechanism supports the rotating mechanism and thereby the arm for movement vertically relative to the plane of the associated conveyor path and a control mean for operating the rotating and vertical motion mechanisms in response to the position of a carton moving along the conveyor path.

Abstract: The machine comprises: a first assembly (2) with receiving, pressure and feed elements (3, 5), through which the part-finished item is fed, and downstream of these two elements a first folder roller (9) with a line of bristles, for folding and glueing the first front flap, and a pair of pressure rollers; a second assembly (20) with receiving, pressure and feed elements in the opposite direction, with a second folder roller (29) and a pair of pressure rollers (39) for folding the second flap, now the front flap; downstream of the second assembly (20) there is an assembly (219) with a transverse conveyor (320) for moving the part-finished item in two opposite directions (fC, fD), with two assemblies (220, 222) for successively folding and glueing the remaining two flaps of the paper.

Abstract: A carton blank support member is mounted above a traveling carton blank in a folder gluer machine. The support member is cyclicly driven between an inoperative position above the carton blank to an operative position engaging the top surface of the blank adjacent a score line formed in the blank. The score line defines a flap which is folded upwardly when the support member is in engagement with the top surface of the carton blank to form a side wall of the carton. The support member prevents the flap from buckling during the folding operation, especially when recycled paperboard is used as the carton blank.

Abstract: The machine is used to fold and glue paper covering borders onto cardboard or other materials and includes a folding element (9) with a symmetrical row of bristles for folding and gluing the borders passing through in both directions and capable of acting alternately in the two opposite directions; and, on both sides of the mechanism, symmetrical receiving, pressing and advancing elements (1, 3, 5, 7; 21, 25, 27), between which the semi-finished article is fed in a first direction of advance (fA) which is orthogonal to one side of the semi-finished article, and which are capable of operating alternately in two opposite directions (fA, fB) to carry out the folding of the two parallel and opposite borders of the article; a single article may be inserted twice in orientations orthogonal to each other for the folding of the four borders.

Abstract: A method of and apparatus for the production of packages each comprising a unit of product having opposite ends and a wrapper wrapped around the unit, the wrapper being wider than the length of the unit from end-to-end and initially extending outwardly beyond the ends of the unit, each end of the wrapper being folded over on said end of the product to form four closure flaps overlying said end, a first flap constituting a first side flap, a second flap constituting a first end flap, a third flap constituting a second end flap, and a fourth flap constituting a second side flap, the method of folding over the second end flap, wherein packages are fed forward one after another with the ends of the wrapper extending laterally outwardly at opposite sides of their path of travel, and the second end flaps are folded over at both ends of the package by flexible folding members which are brought into engagement with the trailing side of the trailing portion of each extending end of the wrapper and moved forward at hig

Abstract: Apparatus for a paper box folding machine for folding the trailing panels of carton blanks about fold lines as the blanks travel individually and successively along a paper line. A servomotor running continuously at a relatively constant nominal angular velocity drives the input shaft to an indexer that controls, for each position of its input shaft, the angular position of its output shaft. The indexer converts continuous input from the servomotor to discontinuous motion of its output shaft. The output shaft lies below and transverse to a paper line. Radially extending fingers mounted on the output shaft are positioned below a trailing panel as the carton blank passes. The indexing means output shaft and fingers rotate rapidly so the fingers engage and fold the trailing panel and then dwell to allow the blank to exit the apparatus. Then the shaft and fingers move below the paper line to allow another blank to enter and rotate to engage a next blank in sequence.

Abstract: In a folder gluer collapsable box making machine, a self-driven endless chain is mounted on sprockets on a small frame and is equipped with push plates and lifters such that when pre-cut box board moves along the conveyor of a box-making machine, the front of the pre-cut box board hits a pusher and moves the chain in a forward direction while the folder lifter arm abuts the rear portion of the box board and folds over the rear ends and/or flaps.

Abstract: A carton leading and trailing end panel folding mechanism for use with a tubular carton blank mounted on a mandrel, with the end closure panels extended beyond the face of the mandrel. The main folding mechanism is a single freely rotatable roller which serves to first fold the leading panel rearwardly as the latter rotates therepast, and then to engage and fold the trailing panel forwardly as it rotates therepast. The roller may be stationary until contacted by the leading panel.

Abstract: The automatic machine comprises a magazine, dispensing die-cuts pre-creased longitudinally with fold lines providing divisions between at least four side panels and a securing flap, suckers by which the die-cuts are picked up from the magazine, and a revolver with radial grippers. In addition, use is made of a conveyor by which the die-cut is transferred forcibly from the suckers to the revolver and bent into U-shape at the same time, and the jaws of each gripper incorporate suction passages emerging along the edges parallel to and farthest from the axis of rotation of the revolver, which firmly withstand the action of first and second folders used to press down the securing flap and the end panel; thus, the die-cut is positively handled and conveyed during its entire passage through the machine.

Abstract: In a machine for packaging articles in a tubular wrap-around carrier formed from a blank having a pair of walls adjoined together along a fold line and having a pair of article retaining and blank reinforcing flaps disposed astride the fold line, and which includes means for advancing a blank and its associated articles along a predetermined path, a mechanism for engaging and folding the pair of flaps and to fold such flaps inwardly of the carrier. The folding mechanism comprises a pivotal folder `f` adapted to execute a folding movement thereby progressively to enter an aperture in the blank to fold the flaps and to retract therefrom during feed movement of the blank and the pivotal folder together through a folding station of the machine.

Abstract: The invention relates to a multiple pot comprising individual pots interconnected by connector portions so as to be capable of being pulled out. The multiple pot is used to raise and transplant seedlings of plants. The invention also relates to a method of fabricating the pot. The pot is designed especially to promote growth of roots across the side walls of the individual pots after transplantation. Also, the resistance encountered when the multiple pot is unfolded is reduced. Further, the individual pots are uniform in size. These feature arise from the facts that the connector portions are formed by applying a waterproof paste discontinuously and that a water-soluble paste is not applied around the edges of the individual pots created when the multiple pot is unfolded. Hence, a coating of the paste is formed in none of these portions. The multiple pot is fabricated by continuously carrying out three steps.

Abstract: In a folder gluer collapsable box making machine, a self-driven endless chain is mounted on sprockets on a small frame and is equipped with push plates and lifters such that when pre-cut box board moves along the conveyor of a box-making machine, the front of the pre-cut box board hits a pusher and moves the chain in a forward direction while the folder lifter arms abuts the rear portion of the box board and folds over the rear ends and/or flaps.

Abstract: An apparatus for joining and folding container sections to form a hinged container. Two container sections are transported in end-to-end relation on a conveyor and the downstream section is engaged with a stop while a pusher member is pivoted into engagement with the trailing edge of the upstream section to force the sections together and engage snap fitted hinge elements on the two sections. The hinged container is then discharged from the first conveyor onto a second conveyor located at a level beneath the first conveyor and operating at a slower speed than the first conveyor. As the leading section of the hinged container falls from the upper conveyor onto the lower conveyor the increased speed of the upper conveyor will fold the trailing section over the leading section to provide a closed hinged container. The closed container then passes under a spring loaded pressure member which ensures that locking elements on the two container sections are fully engaged.

Abstract: A device for folding a rear flap on a box blank characterized by the rotating members and their shaft being mounted in a cradle which is shifted in the frame relative to the path of the blank having the flap being folded. The shifting of the cradle is controlled by a stepping motor. The rotation of the folding members, as well as the position of the drive shaft for the folding members is controlled in accordance to the position of a hitting point of contact for the ends of the hook members with the flap relative to the creasing line.

Abstract: A trailing panel folding system for use in a blank folding machine. The system includes a rotatable shaft mounted below the pass path of the blanks and transverse thereto. A motor is connected to drive this shaft and an arm assembly is mounted on the shaft and includes an arm extending away from the shaft and a folding head for folding a trailing panel of a blank. An encoder is interconnected with the drive means to provide a pulsed output related to the velocity at which the blanks are moving along the path, and a blank sensor provides a trailing edge signal when the trailing edge of the sensed blank leaves the location.

Abstract: A machine for feeding a collapsed beverage can carrier sleeve to a flight bar conveyor and introducing the sleeve in fully open condition to the pocket of the conveyor. After leaving the feed rolls the collapsed carrier sleeve is moved through a fixed guide by lugs on a movable chain. The end flaps on the upwardly facing side panel are held in place on the guide while the end flaps on the downwardly facing side panel are moved downwardly by a fixed cam surface. The substantially opened sleeve is then either given a final kick by rotating arms or is propelled by the feed lugs to accelerate it into the pocket while at the same time fully straightening and opening the sleeve. The carton dimension corresponding to the length of the pocket is the same as the length of the pocket, resulting in more pockets per conveyor length and permitting operation at slower conveyor speeds.

Abstract: A machine for forming open ended cartons from flat die cut blanks of flexible material. The machine includes a magazine adapted to contain a supply of the blanks, and first, second and third forming stations through which the blanks are successively shifted by automatically operable transfer mechanisms. The blanks are progressively folded as they progress through the forming stations. At a final stage in the forming process, adhesive is selectively applied to the undersides of exposed side flaps, and these side flaps are then folded to produce the desired end product. At various stages during the forming process, the partially erected blanks are supported both internally and externally in order to avoid deformation or collapsing of open ends, and to insure precise bending along fold lines.

Abstract: A case making machine is provided with an apparatus for folding rear portion of a feeding case blank and the apparatus comprises a claw mechanism for folding the rear portion of the case blank along the folding line. The claw mechanism is rotated at an angular speed which is changed by a cam mechanism operated by a driving source through a drive shaft and a link mechanism. An electromagnetic valve is further provided for controlling the operation of the claw mechanism. The valve is actuated by an electric circuit such that the electromagnetic valve can be operated in synchrony with the advancing speed of the blank. This result is achieved by increasing pulse numbers inputted into the circuit to account for the rise time interval of the electromagnetic valve.

Abstract: Multi-layered corrugated containers having at least one flat side, have at least one foldable flap attached at the fold line to the flat side. In the past the fold line has been scored or crushed after the box is formed, and this represents an additional manufacturing step. The container includes a multi-layered sleeve with at least one flap on one end of the sleeve and a fold line separating the flap from the sleeve, the fold line having a strip with no corrugations therein permitting the flap to be bent about the fold line.

Abstract: An automatic envelope sealing device wherein envelopes of different sizes can be sealed without adjustment any component of the device. A size of an enveloped supplied into the device is detected by a sensor, and in response to a signal from the sensor, a movable stopper is alternatively extended into a plane in which the envelope is to be fed or retracted in order to stop the large size envelope thereat or retracted therefrom to allow the small size envelope to be fed until it is stopped by a fixed stopper. A flap of the envelope is then bent positively and paste in a controlled amount is applied to the flap whereafter the envelope is fed reversely until it is discharged outside the device. During the reverse feeding, the flap is pressed to be adhered to the envelope by cooperating rollers which act as feeding means.