Abstract: A vertical sealing device for a packing machine includes a pair of feed units for feeding a cylindrical-formed packaging material and a center heat sealer for the heat-sealing of a vertical seam of the packaging material. When the operation of the machine is halted, the feed units feed the packaging material from a steady speed mode to a deceleration mode. During this deceleration mode, the operation of the center heat sealer is stopped. On the other hand, when the operation of the packing machine is restarted, the feed units feed the packaging material in an acceleration mode, and during this acceleration mode, the center heat sealer starts operating.

Abstract: Methods for making packages having improved openable and reclosable interlocking seals from a continuous web of composite packaging film, the seal having male and female portions of arrowhead shape in cross section, snap detents, and being formed transversely to the direction of film flow during package formation at line speed. The packaging film is provided at package length intervals with thermoformable strips secured thereto transversely to the running length of the film, and is fed to a modified standard vertical form, fill and seal packaging machine where the film is formed into a bag with the thermoformable strip inside in ends abutting folded facing relationship at the upper end of the bag, product deposited into the bag, the bag sealed, the reclosable interlocking seal formed, and the bag severed from the next bag being formed.

Abstract: A bag packaging apparatus includes a forming mechanism, a pull down belt mechanism, a longitudinal seal mechanism, a latitudinal seal mechanism, and a settling mechanism. The forming mechanism forms films into tubular shape. The pull down belt mechanism conveys the tubular film F. The longitudinal seal mechanism seals the tubular film F in a longitudinal direction. The latitudinal seal mechanism seals the tubular film F in a latitudinal direction. The settling mechanism is disposed between the forming mechanism and the latitudinal seal mechanism, and between the longitudinal mechanism and the latitudinal mechanism. The settling mechanism presses a portion of the tubular film F that is going to become an upper end of a bag and a bottom end of a following bag, while seal jaws 78 seal the tubular film F. The sealed portion becomes a bottom end of the bag. The following bag follows the bag, whose bottom end is the sealed portion.

Abstract: A vertical pillow type form-fill-seal packaging machine with transverse sealers incorporates a timing controller for adjusting the timing for clamping a tubularly formed film with the sealers such that articles being dropping in to be packaged will not be caught in between. A display device displays a time axis or parallel axes along which markers indicate the times of arrival of the falling articles to be packaged and the sealers at the clamping position for the sealers. As the user moves the marker for indicating the arrival time of the sealers, the timing controller adjusts the operating mode of the sealers such that the sealers will clamp the film at the time specified by the user according to the displayed time of arrival of the articles.

Abstract: A packaging machine moves its heater unit for longitudinal sealing of a tubularly formed film between a sealing position at which the heater unit contacts the film and a retracted position at which it is separated from the film. In addition to the mechanism for this motion, an air cylinder is provided for controlling the compressive force with which the heater unit at its sealing position compresses the film. A pressure controlling system regulates the air pressure supplied to the air cylinder. If the mechanism for moving the heater unit also employs another air cylinder, a higher pressure for moving the heater unit and a lower pressure for controlling its compressive force may be generated from a single air source and supplied to the two air cylinders by a switching mechanism. A single air cylinder with two air chambers may be used for the both functions.

Abstract: A method of manufacturing a liquid container of plastic coated boxboard, laminated cardboard or the like having a straw therein is disclosed. A method for attaching a holder/straw assembly to a carton in a continuous form, fill and seal process including the following steps: unrolling a rolled sheet material being comprised of a plurality of carton sections, each carton section having a hole formed therein; sealingly attaching the holder/straw assembly to the sheet material over said hole; attaching a strip to the holder/straw assembly; forming the sheet into a columnar sleeve; sealing a longitudinal seal along the columnar sleeve; adding the beverage into the sealed columnar sleeve; forming a top and bottom transverse seal across the columnar sleeve and through the beverage; cutting each carton from the columnar sleeve; and forming a parallelepipedic carton having a drinking straw therein.

Abstract: Bags (13) with welded edges (21) are created by means of a vertical tubular bagging machine (1). The bags (13) are flat on top and are relatively wide at the bottom. Only one edge-welding device (15) to create a top seam (30) is for this purpose provided on one side of the fill pipe (7). Two edge-welding devices (15) on the opposite side (29) of the fill pipe (7) are used to create two bottom seams (37) stabilizing the bag (13).

Abstract: The invention relates to a supporting structure of a bag packaging machine for the vertical forming, filling, and sealing of tubular bags.

Abstract: The present invention provides a first transfer unit instead of a stationary chute. The first drive unit drives the first transfer unit and is controlled to maintain a bag ejection interval or bag posture. Thus, variation of the bag-to-bag pitch and bag posture even in a high-speed operation with an improved bag-forming capacity is prevented.

Abstract: The present invention relates to a method of manufacturing packaging bags having lateral bellows, the method being characterized by the fact that it comprises the steps consisting in: forming respective cutouts (150, 160) in each of the two lateral, bellows-forming zones of a packaging bag sheet (100) so that the bag has only two thicknesses superposed at the mouth of said bellows, at least over a portion of its width; and heat-sealing (184, 186) the adjacent edges of the sheet to the peripheries of the cutouts (150, 160) to close the bag. The invention also provides apparatus for implementing the method and bags obtained thereby.

Abstract: In a heat seal device of a filling and packaging machine, wherein a continuously fed film F is vertically sealed by a vertical seal mechanism 19 and the laterally sealed by lateral seal mechanisms 20, 21, contents W, W1, W2 are filled in the film formed in the bottomed cylindrical shape and, while the film F is fed, a portion of the film F which forms a bag opening part side is sealed laterally by the lateral seal mechanisms 20,21 for continuously packaging as pouches P, the vertical seal mechanism 19 comprises a pair of rotating shafts 25 incorporating heaters H and mounted rotatably and two pairs of vertical seal rolls 31, 34 which are mounted in pairs on the rotating shafts 25 with a given distance in the axial direction of the rotating shafts 25 and have seal portions 30,35 protruded in a flange shape around outer peripheral portions thereof respectively, the heaters H incorporated in the rotating shafts 25 are disposed movably along the axial direction of the rotating shafts 25 with the position of the h

Abstract: A web position matching system for matching marks provided on a web of packaging material with a pitch corresponding to the length of one container, to a reference position comprises sensor means for detecting the displacement of the mark from the reference position, setting means for setting a usual amount of feed obtained by adding a predetermined amount of advance to a predetermined reference amount of feed corresponding to the length of one container when the displacement detected by the sensor means is smaller than a predetermined allowable displacement or setting a corrected amount of feed obtained by subtracting a predetermined amount of delay from the reference amount of feed when the detected displacement are not smaller than the allowable displacement, and means for correcting the usual amount of feed and the corrected amount of feed based on a pattern of frequencies with which the usual amount of feed and the corrected amount of feed are set by the setting means.

Abstract: A packaging machine comprises a filling device 13 for filling a tube T of packaging material having an open upper end and a closed lower end with contents in a predetermined amount at a time, and a device 14 for forming containers C by sealing and cutting the filled tube T transversely thereof into a length corresponding to one container at a time. The amount of contents to be filled into the container and the capacity of the container are so determined that the capacity is greater than the amount of contents to be filled.

Abstract: Methods of making slide-zippered reclosable packages are provided. In one embodiment, a pair of opposing film extensions are provided on each package between which a zipper and slider are attached. In another embodiment, sliders are inserted on to zippered packages output from a form-fill-seal machine or the like. In yet another embodiment, during package formation a reclosable zipper is sealed to each package and then a slider is inserted on to the zipper. In yet another embodiment, during package formation a reclosable zipper is sealed to each package and a slider is inserted on to each zipper, either before or after zipper sealing.

Abstract: The packaging apparatus comprises a former for forming a film sheet to a cylinder, a vertical chute pipe coaxially disposed in the former, support members for supporting the chute pipe disposed on load cells fixed on a frame separately in structure, a vertical heat sealer for sealing the film sheet into a cylinder, a controller for calculating the weight of goods to be put in the cylinder, a weighing unit for putting the goods in the cylinder while being controlled by the controller, a lateral heat sealer for sealing the cylinder under the end of the chute pipe for closing the cylinder filled with the goods and separating it by cutting while remaining a bottom portion of a next bag, wherein the controller controls a sequential steps of operation of the apparatus.

Abstract: The invention relates to a method and a device for shaping and portioning a soft, pasty product within a tubular casing made of foil material, the encased product being supplied to a shaping and portioning station. The product leaves said shaping and portioning station divided into portions. The invention further comprises a metering station arranged directly upstream of the shaping and portioning station. The metering station meters the quantity of the product supplied to shaping and portioning station per unit of time.

Abstract: A cutter cleaning apparatus for a filling machine which prevents liquid food adhering to the cutting knife from dirtying cut ends of packaging material. A web-shaped packaging material is continuously sealed in the longitudinal direction thereof to be formed into a tubular shape, a liquid food is charged into the tubular packaging material (11), and the tubular packaging material (11) is nipped from opposite lateral sides at a position below the surface of the liquid food, so that a laterally sealed portion (S) is formed. Subsequently, the laterally sealed portion (S) is cut in order to obtain an original-shape container. The cutter cleaning apparatus includes a cutting knife (21) for cutting the laterally sealed portion (S), and cleaning medium supply means for supplying a cleaning medium to the tip end of the cutting knife (21).

Abstract: A bagging and packaging machine for forming a bag from a strip of bag material and introducing an article into the bag includes a gas supply unit for supplying an inert gas into the bag to substitute for air contained in the bag and a gas supply control means for controlling supply of the inert gas by the gas supply means into the bag. The bagging and packaging machine is designed to allow the inert gas to be supplied under high pressure at a flow rate sufficient to increase the gas replacement rate in the bag when the machine is started, to be supplied under low pressure at a flow rate lower than the high pressure flow rate during a bagging and packaging operation subsequent to the start of the machine.

Abstract: A tubular bagging machine in which expanding elements projecting away from the fill pipe are provided in order to create bags with welded edges. A separate longitudinal welding device for welding of an area adjacent to the edge of the tube is provided. It is thus possible to produce directly side-by-side a longitudinal seam and a welded edge. A bag-opening aid or a reclosing aid can be integrated into the longitudinal seam or the edge.

Abstract: The multi-layer film structure having an inner sealing layer which comprises metallocene resin, a core which includes polypropylene copolymer and an outer layer and wherein the multi-layer film structure has a thickness within a range between about 50 and 70 microns (2.0-2.75 mil). By utilizing this thin film with specific properties the sealers may be operated at lower temperatures thereby resulting in an energy saving and they produce seals having improved seal strength of 30% to 50% as compared with known prior mono-layer polyethylene film. The seal initiation temperature is reduced by 10° C. to 15° C. and the film exhibits an improved machine direction tensile strength of 25% to 40% and an improvement of 30% to 50% in puncture resistance as compared with a 76 microns (3 mil) mono-layer polyethylene film. This results in a reduction in the sealing cycle time and an increase in the throughput of the machine.

Abstract: A form-fill-seal packaging machine has a pull-down mechanism for advancing an elongated bag-making film, a longitudinal sealer for sealing the film in the longitudinal direction to make a tube and a transverse sealer for sealing the film transversely to form the bottoms and the tops of the bags, and is controlled such that the longitudinal sealer is activated for a specified length of time whenever a ready signal is outputted to the weigher to request a discharge of articles to be packaged but the operations of the pull-down mechanism and the transverse sealer are not started unless a signal is received from the weigher, indicating that it has discharged articles as requested.

Abstract: In a multiple automatic packing machine comprising a slitter for slitting a wide sheet-like packing material supplied from a take-up roll into a plurality of packing films, a heat sealing device for seal molding each of the packing films into an elongated bag-like configuration by a vertical heat sealer and a lateral heat sealer, and a material filling device for filling a material to be packed into each of the packing films which has been seal molded into an elongated bag-like configuration through a feed pipe with a filling screw disposed therein which screw is rotatable by a motor, the slitting, heat sealing and material filling operations being repeatedly performed in a consecutive manner by the slitter, heat sealing device and material filling device, respectively, thereby a plurality of stick-like packing products are seal molded at a time automatically and in a consecutive manner, a packing film feeder for the multiple automatic packing machine being characterized in that the feed pipes constituting th

Abstract: A downwardly acting air-outlet nozzle (8) is provided in a device (1) for packaging between a funnel (2) and a fill pipe (5) for the purpose of producing an air stream and to thus enable filler to fall quicker through the fill pipe (5). In order to be able to determine and regulate the pressure (P) in the lower area of the foil tube, the pressure P is determined by means of a measuring device (26) and a measured-value indicator (27). The measuring device (26) can include a hollow pipe (29), which guides the pressure (P) to a measuring device (28). Tubular bags with a specific interior pressure can be manufactured with the device (1).

Abstract: A forming, filling and sealing machine comprises three sealing mechanisms for heat sealing a film, a folding mechanism for inwardly folding the width direction middle part of the film along the longitudinal direction of the film, and an injection pipe for injecting in filling materials. A first sealing mechanism heat seals a long sheet film to be carried downwards with both side ends overlapped with each other, the heat sealing being applied to the overlapped both side ends along the longitudinal direction of the film. A second sealing mechanism heat seals at least the top of two ridge portions formed by the folding mechanism in the film along the longitudinal direction of the film. A third sealing mechanism is disposed below the injection pipe for horizontally heat sealing the film and cutting the heat sealed portion.

Abstract: A pair of pull-down belts pulls longitudinally a tubularly formed elongated bag-making film along a filling cylinder of a bag maker-packaging machine. A pair of members supporting the pull-down belts can move towards or away from each other depending on the size of the former, and elastic springs for providing each of the pull-down belts with a force which depends on their relative positions with respect to the corresponding belt-supporting members. An adjustment motor moves the pull-down belts initially to specified reference positions separate from the tubularly formed film and therefrom towards the filling cylinder. The distance traveled by the pull-down belts from their reference positions towards the filling cylinder is monitored. The distance by which the pull-down belts must be moved for each of different kinds of former is measured and stored in a memory device.

Abstract: A method for manufacturing a plurality of containers from a tube of flexible packaging material includes transversely severing the tube into a plurality of individual containers, each having a main body with two opposed pointed lower corners, pinching each pointed lower corner to collapse the corner into a flattened triangular shape while adding heat to the same in order to well the corner together in the flattened condition, and bending each flattened corner to lie under its respective main body, while the flattened corner still retains heat.

Abstract: A form-fill-seal packaging machine has a halting device above its transverse sealer below a cylindrical chute through which articles to be packaged are dropped cyclically in batches. A film is bent into a tubular form and pulled down around the chute to the transverse sealer. The halting device serves to squeeze the film such that the free-falling articles are temporarily halted before reaching the transverse sealer such that the articles can pass through the transverse sealer in a more compactly bunched batches. This makes it less likely for any of the articles to be caught between sealing devices of the transverse sealer and the work efficiency of the packaging machine can be improved.

Abstract: A fruit-packaging machine includes a plastic bag web outputting device mounted to a frame for supplying a plastic bag web that is enclosed at two lateral sides thereof when it passes through a side-enclosing device. A fruit-conveying device conveys fruit to be packaged into a plastic tube that is then enclosed by a final enclosing device. An operative plate is secured to an enclosing seat of the final enclosing device. The operative plate is operably connected to an actuating plate that pivots a shaft extension of a pivotal shaft by a follower rod. A receiving plate is connected to the pivotal shaft to pivot therewith, thereby receiving the packaged fruit and conveying the packaged fruit to a conveyor.

Abstract: In a vertical form, fill, seal machine that produces liquid-filled stand-up pouches, a flat vertical fill tube is surrounded by an envelope of thermoplastic film that is closed along one longitudinal edge and open along the opposite longitudinal edge. A main drive assembly includes drive members that press opposite sides of the envelope against the flat fill tube. An auxiliary film drive assembly is responsive to film tension. Stand-up base cups are formed seriatim along the closed longitudinal edge of the envelope. Fitments are inserted seriatim into the open longitudinal edge, in correspondence with respective cups, and are sealed to the thermoplastic film, first by a spot-sealer and then by a top sealer. End seal/cut-off assemblies provide a seal transversely of the envelope that is bisected by a knife to release a leading pouch that has been formed, filled, and sealed.

Abstract: A bag forming apparatus and method with single drive unit operating a drive roller and a cross-cut mechanism with the drive motor assembly being internalized within the drive roller. The apparatus is particularly designed for feeding, solely through use of a full film width contact drive roller, film material derived from a single supply roll of two ply film material. The arrangement avoids tracking problems, as well as any requirement for a supply roll driving, braking and tension monitoring. The supply roll can be laid in position on underlying, passive support rollers prevented from inertia induced over-rolling by a passive friction device which tension in the film material being fed between the single, cylindrical drive roller and an opposing pair of spaced, driven rollers in a pinching relationship with the film material being fed past the drive roller.

Abstract: A container forming apparatus to form fluid filled containers from a tube of flexible packaging material includes a fluid delivery conduit to deliver fluid into the tube. A heat sealing mechanism receives the tube and forms spaced seals across the tube between which fluid is located. The seals are formed in a downstream to upstream succession and are non-orthogonal with respect to a longitudinal axis of the tube. Hydraulic equalization supports associated with the heat sealing mechanism support the tube indirections generally orthogonal to the longitudinal axis adjacent the seals as the seal is formed.

Abstract: An object of the present invention is to provide a control method for a box motion type end-sealing carried out by a longitudinal type or lateral type bag forming, filling and packaging machine, which can permit the end sealing time period to be set as long as possible even if a linear section (a sealing length of a predetermined stroke) is made constant. There is provided a method of controlling an end-sealing time period for a bag forming, filling and packaging machine.

Abstract: A machine for producing cushioning product is provided which allows a user to select a length of product to be produced from a plurality of selectable lengths.

Abstract: In a tubular bagging machine with two cross-sealing jaws 1, 2, which are movable toward one another and thereby cross-weld a foil tube, product that moves between the cross-sealing jaws 1, 2, interferes with the cross seam, and results in a leaky cross-seam of a tubular bag. In order to reliably recognize entrapped product 10, it is suggested to measure the performance resistance of the servomotor on the cross-sealing jaws 1, 2, which are moved by a servomotor drive 4, in order to determine product entrapment. The machine controller 8 can additionally receive from the drive 4 a value for the jaw position, which position value corresponds to a desired momentary jaw pressure. A product entrapment is determined from a high or measured performance resistance value from the desired value. A reliable product entrapment recognition is achieved through the use of the light-metal cross-sealing jaw.

Abstract: A container for fluids or liquids is formed of flexible material such as plastic and includes a body having an internal reservoir and a tubular spout extending upwardly from the body. The spout has an internal passage in fluid communication with the body. A constriction in the container creates a low pressure zone in the passage downstream of the constriction as liquid flows along the internal passage. Means are also provided to inflate the spout as fluid flows along the internal passage. A method of forming fluid-filled containers from a tube of flexible material and a method of forming a self-supporting fluid-filled container are also disclosed.

Abstract: A packaging machine (11) in which tubular bag material (16) is driven through the machine and caused to vibrate in the general direction of movement of the tubular bag material to aid in settling products so that the product occupies a minimum volume during formation of bags containing the product.

Abstract: A forming, filling and sealing machine comprises three sealing mechanisms for heat sealing a film, a folding mechanism for inwardly folding the width direction middle part of the film along the longitudinal direction of the film, and an injection pipe for injecting in filling materials. A first sealing mechanism heat seals a long sheet film to be carried downwards with both side ends overlapped with each other, the heat sealing being applied to the overlapped both side ends along the longitudinal direction of the film. A second sealing mechanism heat seals at least the top of two ridge portions formed by the folding mechanism in the film along the longitudinal direction of the film. A third sealing mechanism is disposed below the injection pipe for horizontally heat sealing the film and cutting the heat sealed portion.

Abstract: In the production of a strand-form hotmelt adhesive wrapped in a tubular film which is suitable for simultaneous melting with the hotmelt adhesive and which does not have any surface tackiness at normal storage temperatures, the heated liquid hotmelt adhesive is introduced into the cooled tubular film and the tube is subsequently cooled in a cooling bath. During introduction of the hotmelt adhesive, the shape of the tubular film is stabilized by providing an excess gas pressure and/or a guide inside the tube. The outside of the tube is cooled by a cooling liquid, the tubular film is brought into a substantially horizontal position after immersion in the cooling bath and is kept in that position in the cooling bath at least until the contents of the tubular film in proximity with said liquid hotmelt adhesive have at least partly solidified. Strands of any diameter and any length can readily be produced without significant effort in an economically and industrially useful manner.

Abstract: An apparatus for cross sealing a continuously moving plastic tube, such as to form bags for packaging in a form-fill-seal packaging machine is disclosed, along with a related method. The tube is fed continuously between a pair of opposed sealing jaws that move toward and away from each other in a polygonal path. Substantially continuous sealing pressure is provided between the jaws during a sealing pattern of movement along the path, with the remainder of the path including a return pattern of movement away and back towards the sealing zone. Each sealing jaw is carried on a bridge extending between dual gear assemblies. The sealing pattern of movement along the path is substantially linear so as to provide highly efficient sealing. The polygonal path is established by an offset point on an output shaft/pinion; the locus defining the path being selected from the group of hypotrochoids and epitrochoids.

Abstract: A form-fill-seal packaging machine has not only the basic elements such as devices for transporting a film and longitudinally and transversely sealing it but also a former and a chute formed integrally together as a former unit which is made detachably attachable to the frame structure of the packaging machine by an attachment mechanism. The former unit has wedge-shaped members, and the attachment mechanism includes a mobile member constrained to move linearly and a lever which is attached to the frame structure such that a one-touch operation to rotate this lever causes this mobile member to move towards or away from the wedge-shaped members on the former unit and to engage with them or disengage from them.

Abstract: A protective foam cushion-making apparatus dispenses reactive foam components into an interior space between two panels of plastic film to form protective foam cushions. The apparatus includes a supply of plastic film and a film a driving assembly, such as two pliable rollers. A foam component dispensing assembly is interposed between the film panels and injects reactive foam components into the interior space where they are mixed together to form a mass of expandable foam. The plastic film forms a flexible mixing chamber in the area between the two pliable rollers in which the reactive foam components are mixed together after they are dispensed from the foam dispensing assembly.

Abstract: A packaging machine has a roll supporting device with a support shaft rotatably supporting a film roll which extends in an axial direction, an elongated bag-forming film being wrapped around the film roll, a bag forming device which pulls out the film from the film roll and forms the film into a shape of a bag, a packaging device for filling the bag-shaped film with articles to be packaged and sealing the film to produce a package, a roll displacing mechanism for displacing the roll supporting device in the axial direction, and a roll position controller for controlling the roll displacing mechanism to adjust the position of the roll supporting device. The bag forming device includes a former for bending the film into a tubular form and a former roller for guiding the film to the former.

Abstract: The apparatus and method attaches a section of unsupported interlocking zipper transversely to portion of film drawn around a fill tube of a form fill and sea machine. This includes the steps of driving and guiding said zipper horizontally around the outside of the film formed around the tube in a direction transverse to direction of movement of the film, after the formation of the fin seal. An alternative embodiment drives and guides the zipper horizontally around the inside of the film formed around the tube prior to the formation of the fin seal. A retractable ledge may be used to guide the zipper in the alternative embodiment. A slider operated zipper can also be used in this alternative.

Abstract: A downwardly acting air-outlet nozzle is provided in a device for packaging between a funnel and a fill pipe for the purpose of creating air flow and to thus cause a fill material to drop quicker through the fill pipe. It is possible through the special arrangement of the air-outlet nozzle to utilize common funnels and fill pipes in such a device and to achieve positive fill material acceleration.

Abstract: A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product; the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which cooperate with and grip the tube (14) to heat-seal the tube at successive cross sections (54) by means of induction heating elements (29) on the jaws (12); and each jaw (12) has a pair of movable elements (60) for interacting with and correcting supply of the tube (14), and the travel of which is controlled by a control assembly (95) in response to a signal (107) related to the position of designs (31) on the packaging material.

Abstract: A bag making and packaging machine has a pair of transverse sealing members on opposite sides of a film path for transversely sealing a bag-making film moving longitudinally along this path. A pair of support members supports these transverse sealing members and is driven so as to bring the transverse sealing members towards each other to contact with the film and away to separate them from each other. At least one elastic member is interposed between at least one of the support members and the corresponding one of the transverse sealing members. This elastic member is in a contracted condition when the transverse sealing members are in contact with the film on the film path and thereby applying on the film a sealing pressure corresponding to the distance by which the elastic member is contracted.

Abstract: The formation of a tubular web in a form-fill process is achieved by drawing the web along a tapering guide (6) and then along a forming tube (20) the axis of which is at a small angle to the guide plate and intersects the guide. The web is drawn along the guide and tube by opposed drive rollers (24) at a station along the length of the forming tube, the rollers gripping the edges of the web together. The side margins of the web are folded over from a central portion when the web travels along the guide plate but the side edges are brought together only after they reach the forming tube. The drive rollers (24) or sealing rollers (26) further along the forming tube seal the edges together to form a closed tube.

Abstract: A zipper strip for a reclosable package having a transverse zipper is provided. The zipper strip comprises a male interlocking profile and a female interlocking profile. Each profile includes an interlocking member and an integral web which defines a trailing flange. One or both of the profiles are provided with high compression members which allow one or both of the interlocking members to be sealed to thermoplastic film without being crushed or distorted.

Abstract: A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product; the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which interact with and grip the tube (14) to heat-seal the tube at successive cross sections by means of induction heating elements (29) on the jaws (12); and each counter-jaw (13) has a push bar (35) fitted to a main body (20) of the counter-jaw via the interposition of springs (75) defining the gripping pressure exerted on the packaging material.

Abstract: A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product and fed along a vertical supply path (A); the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which interact with the tube (14) to grip and heat-seal the tube at successive cross sections and so define a strip (25) of packages (2) connected to one another by respective transverse sealing bands (26); and the unit (1) also has a first and a second cutting member (54, 55) located beneath the conveyors (10, 11) and symmetrically on opposite sides of the supply path (A), rotating synchronously and in opposite directions about respective axes of rotation (G, H) crosswise to the supply path (A), and cooperating with the strip (25) of packages (2) to cut the strip (25) along the sealing bands (26) and draw the packages (2) away from the chain conveyors (10