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EP0052261A1 - Récipient pour produits coulants comprenant un dispositif d'ouverture refermable - Google Patents

Récipient pour produits coulants comprenant un dispositif d'ouverture refermable Download PDF

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Publication number
EP0052261A1
EP0052261A1 EP81108887A EP81108887A EP0052261A1 EP 0052261 A1 EP0052261 A1 EP 0052261A1 EP 81108887 A EP81108887 A EP 81108887A EP 81108887 A EP81108887 A EP 81108887A EP 0052261 A1 EP0052261 A1 EP 0052261A1
Authority
EP
European Patent Office
Prior art keywords
tube
pack
mandrel
cover
injection mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81108887A
Other languages
German (de)
English (en)
Other versions
EP0052261B1 (fr
Inventor
Wilhelm Reil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tetra Laval Holdings and Finance SA
Tetra Pak Developpement SA
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Pak Developpement SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tetra Laval Holdings and Finance SA, Tetra Pak Developpement SA filed Critical Tetra Laval Holdings and Finance SA
Priority to AT81108887T priority Critical patent/ATE18523T1/de
Publication of EP0052261A1 publication Critical patent/EP0052261A1/fr
Application granted granted Critical
Publication of EP0052261B1 publication Critical patent/EP0052261B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
    • B65D15/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made by winding or bending paper
    • B65D15/08—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made by winding or bending paper with end walls made of plastics material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/10—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having frangible closures
    • B65D47/103—Membranes with a tearing element

Definitions

  • the invention relates to a pack for flowable filling goods, consisting of side walls and end walls connected in tubular fashion to one another via at least one longitudinal sealing seam; which are attached to the ends of the tube, form the bottom and lid of the pack and of which an end wall is made of thermoplastic material without backing material, is injection-molded along its outer edge on the side walls and one inside the outer contour of the Pack has folded pouring device, the side walls made of at least one side with thermoplastic plastic coated carrier material, such as cardboard.
  • the type of packaging that has currently become the most popular for the transport of liquids, in particular milk and fruit juices, is a parallelepipedic package consisting of a tube made of a carrier material coated on both sides with ribs at the ends in the area of the end walls is closed and brought into a parallelepiped shape, so that there are two opposite, double-walled triangular flaps on each end wall, which first protrude outward from the end walls of the pack and are finally folded over against adjacent side walls or the end walls of the pack.
  • the pouring opening is formed by punching perforation lines or other lines of weakness in the outer pack layer, which are torn off after the corresponding triangular flap has been unfolded.
  • a g already from the Packun sMaterial punched opening which is covered liquid-tightly by a strip. The cover strip is grasped and pulled up via a free grip section which is not fastened to the side wall, and the tear-open opening arranged on the inside of the triangular tab is then exposed in the form of a round or elongated hole.
  • the pouring in this known package does not take place in the desired jet in order to avoid spilling the filling material.
  • a liquid pack is known from DE-OS 2 210 013, in which the side walls also consist of cardboard coated with thermoplastic, while the lid and base are made of thermoplastic without a carrier material.
  • this pack is designed such that the lid is injection-molded along its four edges, but the bottom is only injection-molded onto the side walls along one edge to fill the pack.
  • Such a pack is inexpensive to produce, practical in construction and reliable in use. Similar to the mostly used and known parallelepipedic liquid pack, this known pack also has an exact shape with good stability and shrinkage possibility for collective containers.
  • the package known from the publication mentioned is, so to speak, upside down for filling; because the lid provided with the opening device in one piece is initially arranged at the bottom, while the base, which is only molded along its one side edge, with the tube of the ready-to-fill pack which is open next to it, is arranged at the top.
  • the manufacture of such an opening device no longer requires complicated injection molds for injecting the thermoplastic end walls, and the tools can also be easily pulled out or pushed out of the tube.
  • the well-known package After filling, the well-known package is closed on its bottom. Difficulties in centering and precisely liquid-tight welding can sometimes arise here, or at least the mechanical expenditure involved in closing the end wall forming the base is not insignificant, although the main centering work has already been done by spraying this base onto a side wall.
  • the invention is therefore based on the object of creating a package of the type specified in the introduction, in which a stable package with good sealing properties can be produced with optimal saving of material, which can be easily opened and closed again by the end user without special instructions.
  • the aim of the invention is also to provide a method for producing such a package and an apparatus for carrying out this method.
  • the new package according to the invention is characterized in that the end wall, which is made only of thermoplastic, forms the lid and the end wall which represents the bottom is square, and a transverse sealing seam is also provided on an adjacent wall has folded triangular lobes.
  • an eluent pack is created in which a hitherto unusual combination of completely different closure walls is used on the end walls.
  • the end wall forming the lid should consist of pure thermoplastic material;
  • the floor on the other hand, is to be closed by a transverse sealing seam, as in the conventional packs, and is to be shaped in a manner known per se by folding over the triangular flaps to form one of the customary end wall designs, the opening of which has repeatedly been difficult in the past.
  • the new principle according to the invention which is to create a front wall as a pure plastic cover and the base in the classic square shape, it is possible to produce plasticizer packs in the form of cubes, cuboids or other designs.
  • the lid and the cross section of the pack are round at least in the area of the lid and that the shape of the lid is the form of use during and immediately after the spraying process.
  • the last-mentioned feature means that the lid, which is only made of thermoplastic, is injection molded in the shape of its use.
  • thermoplastic generally has the tendency in its H Creation mold return, after having been previously deformed.
  • the lid is injection molded with an end device forming end walls so that the form of transport is immediately obtained. Then, after filling and closing, the package can be immediately transferred to a collecting container and handed over to the transport.
  • the round cover and the round design of the cross-section of the pack in the area of the cover make it possible to produce particularly simple tools, and yet the pack equipped in this way still has the advantages of stability, good use of space, combination in collecting containers and tightness.
  • the pouring device has an outwardly projecting ring collar, the upper edge of which is connected to a sealing plug with a welded gripping ring and lies within the outer contour of the pack for transport.
  • the grip ring also protrudes somewhat from the sealing plug in the manufacturing spray design, so that the user can easily grasp it sen, pull with it the pouring device in the form of use and the opening G by tearing of the stopper along the upper edge of Rin can open the collar.
  • the gripping ring preferably protrudes laterally by 180 ° against the sealing plug.
  • the coated carrier material is first pre-grooved, fed to bending and folding stations by a roll in the form of a web, and pulled against an outer ring under tension to produce a tube. Only then is the tube closed by longitudinal sealing.
  • a tube which is later closed by longitudinal sealing, in such a way that a pre-embossed material web, after being cut accordingly, is passed through the inside of an outer ring with such tension that this tube is shaped such that puts the material web on the ring and thus gets a circular cross-section. If you use this development now Proposals for achieving the object according to the invention, then the tube is expediently drawn onto a calibration mandrel.
  • the longitudinal sealing takes place according to the invention between this and outer jaws.
  • a section length of the tube is withdrawn from the calibration mandrel in cycles, transferred to an injection mold lower part and moved to the side out of the feed direction into position relative to an injection mold upper part.
  • the lid is injected and cooled while being connected to the end of the tube section.
  • This tube section which is closed on one side, is then pulled off the lower part of the injection mold.
  • the pack is closed after filling by welding the block bottom to the bottom.
  • the path for forming the tube is drawn from the inside against an outer ring and thereby brought into the shape of a circle in cross section
  • the above features additionally provide for the tube formed in this way to be drawn onto a calibration mandrel .
  • the longitudinal seal seam is created in batches between the calibration mandrel and one or more outer jaws, so that the tube to be closed lengthways is arranged between the mandrel and the jaws.
  • the tube is pulled off the calibration mandrel and transferred to another mandrel, which is simultaneously designed as an injection mold.
  • the section length of the tube is moved out of the feed direction and into the spraying machine after separation, where the end wall forming the cover is molded onto the still open edge of the tube section becomes.
  • This spraying technique is mastered in technology, and in this way there is good adhesion between the thermoplastic plastic of the cover and the side walls coated with plastic, and thus a perfect one. - Guaranteed free tightness.
  • the freshly sprayed lid which is in the form of the use form, is then cooled, after which the tube section is pulled off the lower part of the injection mold.
  • the advantage of the method according to the invention over the production of the known package with the two end walls consisting only of thermoplastic plastic is that it is easier to close after filling. While in the known case the welding of the three free edges of the end wall forming the bottom is difficult because, among other things, the machine elements have to grasp the pack precisely and the individual tools have to be manufactured and moved very precisely, and furthermore the space inside the pack above the Filling level is very scarce, in order to ensure the correct engagement for the machine elements and welding jaws and still too much air space must remain in this area of the pack next to the filling material, are by the measure according to the invention given significantly better conditions and premises.
  • the liquid level or the upper level of the filled bulk material can be brought up to a desired upper edge, the fluid level is far enough away from the welding point that with certainty no filling material gets between the tools or the surfaces to be welded when cross-sealing.
  • the sides are folded together at the relevant edge of the tube without touching the filling material, so that the weld seam can be easily applied after folding.
  • the triangular flaps are then folded over in a known manner and welded to an adjacent wall, preferably the end wall itself, which forms the bottom. It goes without saying that, in order to carry out the block bottom shaping and then the block bottom weld, the cross-section of the packing must be square in the region of this end wall which later forms the bottom.
  • the invention is advantageously further developed in that the axis of the tube is provided in the conveying direction. It is indeed conceivable and in practice even customary to arrange the axis of the tube transversely to the conveying direction, the production of the pack according to the new method according to the However, the invention permits greater production speed and fewer relative movements of the individual tube sections from one work station to the next if the tube axis lies in the conveying direction.
  • the device according to the invention have particular advantages in that the pre-embossed paper web is pre-embossed with such a width that two or even three pack blanks could be produced next to one another if only two or three devices were used to carry out the method described above be arranged side by side.
  • the device for carrying out the method described above is characterized in that, in alignment with and coaxial with an outer form ring, a calibration mandrel is attached, next to which a longitudinal sealing jaw is movably provided, that behind it in the conveying direction - at least one transport jaw is oscillating in the conveying direction and a cutting device is arranged behind the calibration mandrel, next to which a rotatable mandrel wheel with at least three radially protruding mandrel-shaped injection mold lower parts is provided, an injection device with an injection mold upper part is arranged at an angular distance from the axis of the calibration mandrel and a conveyor is located under the mandrel wheel a filling and a closing station are provided with spaced-apart, open top form drivers.
  • the device constructed in this way can be relatively confined space; as all stamping, cutting and longitudinal sealing stations can be located upstream or downstream of guide rollers, so that the calibration mandrel in the desired position, for example, may be arranged at an inclination angle of 45 0 to the horizontal, next to the mandrel wheel and yet charged in the desired conveying direction without difficulty .
  • one or two pairs of rollers in the form of circular knives are provided between the web winding and the calibration mandrel for separating the web into two or three partial webs, so that during continuous or batch operation the web pulled off the winding continuously into the correct width is separated. Further folding stations can optionally be arranged behind these circular knives, for example in order to impress package edges.
  • the relevant station can also be arranged in front of one, possibly the last deflecting roller in front of the calibration mandrel.
  • a sealing strip is placed on the later inside of the coated paper web in the area of the later longitudinal sealing seam, so that an uncoated surface due to the cut on the side edge of the web does not come to lie opposite the filling material, in particular the liquid. Otherwise the liquid could penetrate the cut edge, which is not protected by plastic, and soften the package there. For this reason, cover strips or sealing strips have been provided for the cut edge so that these are also coated with plastic and the difficulties mentioned above are avoided.
  • the coated paper web treated in this way is expediently guided through a deflection roller in such a way that the completely prepared paper web leads to the one described.
  • one or two longitudinal sealing jaws are arranged to be movable.
  • the longitudinal seam is sealed with the aid of this longitudinal sealing jaw, which acts on the outside or acts on the outside, on the calibration or forming mandrel.
  • Sealing the cut edge can not only be done by applying a corresponding cover strip, as described above, but can also be done later on the mandrel wheel, namely when the end wall that later forms the lid is molded on Welding of the longitudinal seam and the correctly positioned further processing can be carried out, an annular stop is provided on a mandrel-shaped injection mold lower part, against which the tube section is pushed after the longitudinal seal seam has been completed when the calibration mandrel is pushed down and transferred to the mandrel-shaped injection mold lower part.
  • This pushing in takes place by means of transport jaws arranged behind the longitudinal sealing jaws in the conveying direction, one or more transport jaws being provided here, which oscillate in cycles.
  • the conveying device has two transport jaws arranged diametrically opposite one another outside the hollow-shaped calibration mandrel and an inner part which can be moved in the middle therebetween in a longitudinal slot of the calibration mandrel.
  • the conveying device has two transport jaws arranged diametrically opposite one another outside the hollow-shaped calibration mandrel and an inner part which can be moved in the middle therebetween in a longitudinal slot of the calibration mandrel.
  • a cutting device is arranged behind the calibration mandrel - when looking in the conveying direction of the tube - which, in a special embodiment of the invention, preferably has a rotating ring which is arranged around the circumference and carries a cam-controlled knife.
  • the packaging machine therefore works in such a way that first the longitudinal weld seam is created on the calibration mandrel, then the tube is moved a section length further towards the mandrel wheel, so that the longitudinal seal seam can cool and harden. During this movement, the next front section length was transferred from the calibration mandrel to the lower part of the injection mold, specifically via a gap in which the cutting device described is arranged.
  • the tube must be separated or separated into the individual section lengths, because otherwise the mandrel-shaped injection mold lower part cannot move laterally out of the transport device on the mandrel wheel by rotation.
  • the rotatable mandrel wheel arranged next to the cutting device has at least three, preferably eight, radially projecting, mandrel-shaped injection mold lower parts which are arranged at a corresponding angular distance from one another.
  • the mandrel wheel rotates in cycles, just as the entire device works in cycles.
  • the described tube section length, separated by the cutting device is moved by a certain angular rotation of the mandrel wheel under the injection machine, in particular the lower part of the injection mold, so that the lower part and the upper part of the injection machine are exactly aligned with one another. In this state, the end wall that later forms the cover can be injected.
  • the mandrel wheel and thus the tube section under consideration continues to move intermittently until the conveyor, which is preferably arranged horizontally under the mandrel wheel, is reached.
  • This can be one of the known chain conveyors, which offers sufficient rigidity and resistance, so that the stop described above, ie the ring that is movable relative to the mandrel-shaped injection mold lower parts, can strip off the tube section under consideration with the meanwhile hardened lid and can be placed down so firmly that all parts protruding beyond the end line perpendicular to the tube axis at the end of the tube, in particular the opening device on the cover, are pushed in in the transport configuration.
  • the scraper ring which was also a stop, moves on the mandrel-shaped injection mold lower part during the next intermittent rotation in the direction of the center of the mandrel wheel in order to stop the next tube section as a stop once the angular position described above has been reached.
  • the package which is initially still upside down, is placed with the lid on the conveyor and with the bottom open at the top by the conveyor, for example the so-called station chains, under a piston filler or the like, in which the package is filled with the filling material .
  • mold drivers on the conveyor which are preferably open at the top and, in a further other preferred embodiment, have at least two parts which can be moved relative to one another and which, according to the invention, are in the retracted state Specify a round cross-section at least in the area of one lower end and a square cross-section at the other upper end. This specifies the prerequisites for the block bottom molding and then the block bottom welding.
  • form drivers are expediently attached to the conveyor at a distance from one another in such a way that they move with it and are always in alignment under the mandrel-shaped Injection mold lower parts to take over the tube section that is closed on one side.
  • An expedient embodiment of the device has a cycle of two seconds and eight mandrel-shaped injection mold lower parts evenly distributed around the circumference of the mandrel wheel.
  • the axis of the calibration mandrel is inclined at 45 ° to the horizontal
  • the longitudinal axis of the injection mold is at an angular distance of 45 ° to the calibration mandrel such that the lower and upper injection mold parts are arranged approximately vertically under the injection machine
  • the freshly sprayed cover has a time of 3 working cycles from its next position, turned out of the injection molding machine by 45 ° to the stripping position, and transferring the tube section into the mold driver which is open at the top, ie 3 x 2 seconds, for cooling the lid a total of -6 seconds.
  • the paper web ie the backing material
  • the paper web only needs to be provided with a thinner plastic layer, and the longitudinal welding and also the attachment of the transverse sealing seam are nevertheless perfectly guaranteed; because it is a dry weld when welding the bottom of the block.
  • the simple processing and the small number of structural units in the device is further favored by the pre-stamping of the material web to be processed during its manufacture. Due to the thinner plastic coating of the carrier material web, a higher extruder running speed is advantageously possible. We can draw on years of experience in material production.
  • the pack is first described with reference to FIGS. 1 to 6, then the device for producing the pack and with reference to FIGS. 7 and 8 and finally a possible mode of operation of the device.
  • the finished pack for flowable filling goods shown in FIGS. 1 and 2 consists of side walls, denoted overall by 1, because in the embodiment shown here, a round cross section is provided in the area of the cover 2 (because the cover 2 is also circular in plan view) , so that one could distinguish between four side walls at most on the end wall side forming the bottom 3.
  • the side walls 1 are referred to in the present description.
  • These are formed into a tube as shown in FIGS. 1 to 4 and connected along the longitudinal sealing seam 4 for the final formation of the closed tube.
  • the longitudinal sealing seam 4 extends into the bottom 3. This results from the cutting, as can also be seen in FIG. 4.
  • This tube has the height H in the shape of FIG. 2, which, taking into account the shaping shown in FIG. 4, can be seen to be smaller than the section length A from the free top edge 5 of the tube to the top edge 6 of the cover before completion of the base 3 2 is.
  • the upper edge of the finished package results from the line labeled 7, which is shown in FIGS. 2 to 4. Due to the different fold or embossing lines not shown and shown in FIG denformen the double cardboard strip 8 (Fig. 3) is formed, in which the located in Fig. 2 and barely visible cross seal 9 is located.
  • the triangular lobes 10 are also formed here.
  • the base 3 is created from the state of FIG. 4 via that of FIG. 3 to that of FIG. 2. First, the corners, the later tips of the triangular lobes 10, are drawn in the direction of the arrows 11 ( Fig. 4) moved outward in the direction shown and pulled until the state of FIG. 3 is reached. Then the double cardboard strip 8 is pressed together, the transverse sealing seam 9 is applied, the triangular flaps 10 are folded onto the floor and are attached there, for example by point heating, so that the state of FIG. 2 is then reached.
  • the lid 2 is already sealed liquid-tight on the lower side of the pack in FIGS. 2 to -4.
  • the cover 2 which is preferably, but not necessarily, round, is constructed only from thermoplastic plastic and without a carrier material. Therefore, the cover can be injection molded along the outer edge 12 of the tube or the side walls 1 shown in FIG. 5, in the form of the use form, as shown in FIG. 1.
  • the transport configuration is shown in FIG. 5, in which the pouring device, generally designated 13, is folded inward within the outer contour of the package such that no individual parts of the pouring device 13 protrude beyond the outer edge 6. This ensures perfect stability and good outer packaging (using shrink films or the like).
  • the pouring device 13 is seated centrally on the cover 2 in the form of an annular collar 14 which stands upwards outwards, as shown in FIG Plug 16 is connected to welded gripping ring 17.
  • the exact shape after the cover 2 has been sprayed can be seen clearly from FIG. 6.
  • the upper edge 6 of the cover 2 is practically only a ring, on the outside of which a support wedge 18 is formed such that the top of the tube or the side wall 1 is below the edge 12 shown in FIG. 5 comes to lie around this support wedge 18.
  • This provides a particularly strong and rigid connection between cover 2 and side wall 1.
  • a weakening line 22 is arranged in a ring, which forms an almost 360 ° weak point around the sealing plug 16 so that it can be easily torn out to open the package .
  • connection point 23 (FIG. 1) of the gripping ring 17, next to which a bulge 24 projecting inwards from the ring collar 14 toward the center is provided so that the wall this curvature 24 extends inwards according to FIG. 6 and is separated from the surroundings only by the weakening line 22. If the user then tears open the weakening line 22 by tearing the gripping ring 1-7 (upwards according to FIG. 6), then this breaks in the area of the bulge 24 first, so that air can advantageously get into the space under the cover 2 .
  • the hinge 25 for the closure plug 16 is formed in the vicinity of the point designated 21, so that the closure plug 16 can, according to FIG. 6, around the hinge 25 moved clockwise, ie rotated in the opening direction without that the plug 16 tears off immediately.
  • This enables advantageous resealability, especially since the sealing plug 16 has an edge 26 which runs approximately parallel to the ring collar 14 and is only closed by the flat bottom 27.
  • the device for producing this pack has in detail a spraying machine 30 shown in FIG. 8, the upper part 31 and lower part 32 of which are enlarged and shown in section in FIG. 7.
  • a spraying machine 30 shown in FIG. 8, the upper part 31 and lower part 32 of which are enlarged and shown in section in FIG. 7.
  • the exact contour of the two mutually facing surfaces of the upper and lower parts 31, 32 results from machining in accordance with the design of the cover 2, so that it is sufficient to mention a few parts here: for example the funnel 33 for injecting plastic into the Cavity, the holder 34 for the die 35 and the calibration and sealing pieces. 36 for sealing the plastic, preferably polyethylene, against lateral squeezing out past the mandrel-shaped lower part 32 of the injection mold.
  • an injection mold lower part 32 of one length can be replaced by one of a different length without the cover 2 having a different design and the other injection molding machine having to have other parts.
  • FIG. 8 On a frame 40, on the left is the winding 41 of the carrier material web 42, which is thinly coated on both sides with plastic, preferably polyethylene, and is rotatably supported here on the bearings 43.
  • an endless conveyor 44 is shown schematically, which is provided with drives in a manner known per se and can be a station chain conveyor.
  • the upper and lower runs of the conveyor 44 are horizontal and at a distance to the right of the paper roll 41 a holder 45 is attached, on the left side of which knives in the form of round knives 46 are rotatably mounted, with which the webs of the carrier material 42 can be separated.
  • a pre-bending station for creating packaging edges, behind which a first deflection roller 48 is arranged, above which a second deflection roller 49 is located.
  • a sealing jaw 50 In between is schematically shown a sealing jaw 50 with a counterpart, which is not described in any more detail, with the aid of which a plastic strip 52 pulled off a roll 51 is sealed along the cut edge for LS protection so that a direct contact edge between paper and liquid is not possible there when packaging liquids is.
  • the tube forming station 53 is attached between the last-mentioned LS sealing station 50-52 and the injection molding machine 30 fastened to the holder 45 on the right, which will be described in more detail below.
  • An essential element here is the calibration mandrel 54, which is hidden by the tube shown here and which is designated 54 at the location of its arrangement under the tube. This axis of the calibration mandrel 54 lies at 45 ° to the horizontal.
  • the mandrel wheel, generally designated 55 with the eight mandrel-shaped injection mold lower parts 32 is arranged.
  • the piston filler 56 is arranged on the holder 45 and furthermore, to the right, only schematically the block bottom welding station designated 57.
  • a form driver 58 is shown schematically only at two points, which is attached to the conveyor 44 at a distance a from the respectively adjacent form driver and is advanced with it in the direction of arrow 59 under the block bottom welding or closing station 57.
  • the tube forming station 53 consists in detail of a holder 60, likewise arranged at 45 ° to the horizontal which the shaping or calibrating mandrel 54 is fastened via the mandrel curvature part 61.
  • the coated paper web 42 in the form of a shell which is open at the bottom is placed around this curvature part 61 on the right below the deflection roller 49. The lower right end of this shell rests under tension within the outer ring 62, which is also attached coaxially to the calibration mandrel 54.
  • a longitudinal sealing jaw 63 is provided behind the outer ring 62 and a transport jaw 64 is arranged at a distance further behind.
  • the latter oscillates with the cycle of the entire device in accordance with the double arrow 65.
  • the calibration mandrel 54 extends a section length A further in the conveying direction, namely up to the cutting device 66, which is indicated schematically here in the form of two knives, but actually a circular knife can be with an internal counter knife to exercise a scissor effect.
  • the mandrel wheel 55 is connected downstream of the tube forming station 53. It is in the direction of the illustrated arrow, ie in the clockwise direction, rotatably around the central axis, namely intermittently, that is intermittently, each -a clock a thorn-shaped injection molding tool lower part 32 45 0 continues to move in the clockwise direction.
  • Each lower part 32 carries an annular stop 70 which is driven in an oscillating manner in the axial direction of the mandrel-shaped injection mold lower part 32 in order to exert a scraper effect. In the lowest position, designated III, the stop or scraper ring 70 is in its lowest position.
  • the respective injection mold lower part 32 stands vertically below the injection machine 30, as in the arrangement according to FIG. 7.
  • the injection mold upper part 31 can move vertically upwards and downwards with one stroke (so that it is released with the freshly sprayed lid 2 can be lifted off the respective lower part 32), which is larger than the oscillation stroke of the injection cylinder 80 with dosing plunger 81 and granule container 82.
  • the closing station 57 with the device 90 for closing the bottom side, the device 91 for preparing the triangular tabs 10 for contacting the bottom 3, the device 92 for heating the triangular tabs 10 and the device 93 with the pressure stamps for the triangular lobes 10.
  • the package shown on the upper run of the conveyor 44 is, so to speak, upside down; because you can see the cover -2 below, while the end wall 3 that later forms the bottom is located above. For this reason, after the ready-filled and closed package has been removed, the package is turned in the direction of arrow 59 so that the top side comes up.
  • the machine is operated in such a way that the paper web 42 is separated, for example by the roller knives 46, into three separate webs lying next to one another, each of which is fed to the same device as is shown overall in FIG. 8 becomes.
  • the paper web 42 is pre-bent by the device 47 into the edges which have not yet been pre-embossed, then deflected by the roller 48 and guided into the edge protection station 50, where the plastic strip 52 pulled off the roller 51 is pulled off the plastic edge on the edge 42 of the web 42 is sealed with the help of the sealing jaw 50.
  • the paper web prepared in this way is deflected over the deflection roller 49 to the bottom right so that the direction of transport now points from the upper outer circumference of the deflection roller 49 through the axis of the calibration mandrel 54 to the center of the mandrel wheel 55. Due to the tension, which is generated by the transport jaws 64, the paper web 42 first wraps around the mandrel attachment 41 like a bowl open at the bottom and then around the potash To completely enclose the brierdorn 54 under the inner system on the outer ring 62.
  • This enclosing provides the tube shape and takes place in such a way that the two free edges of the tube overlap to a certain extent, so that the longitudinal sealing seam 4 can be applied at this overlap point with the aid of the sealing jaws 63.
  • the tube section with length A is stationary.
  • the transport jaws 64 pull the next front tube section towards the mandrel wheel 55 by a section length A, as a result of which the tube section under consideration, in which the longitudinal sealing seam has just been completed, comes to the lower right end of the calibration mandrel 54.
  • the cutting device 66 is now used to separate it from that part which has just been pushed onto the mandrel-shaped injection mold lower part 32 up to the stop 70 by the activity of the transport jaws 64 described last.
  • the tube section under consideration is then pushed over by the die device 66 onto the mandrel-shaped injection mold lower part 32 in position I.
  • the lower part 32 has a diameter that is approximately 0.5 mm smaller than the calibration mandrel 54.
  • the mandrel wheel 55 now rotates by one cycle, i.e. 45 ° clockwise so that the tube section under consideration now reaches station II under the injection machine 30.
  • the injection mold upper part 31 now moves into the position shown in FIG. 7 by gripping the upper edge of the tube or the side wall 1. In this way, the cover 2 is injection molded directly onto the upper edge 12 of the side walls 1. Then the injection mold upper part 31 or the further spray mandrel 35 moves off the cover 2, and the mandrel wheel 55 can then move through 180 ° into the position III, the cover being cooled with the fresh molded part at the same time.
  • the mandrel wheel 55 is set and synchronized with the other stations 52, 30 and with the form driver 58 so that there are exactly identical positions between the axes of the opposite parts in the individual stations, in particular stations I, II and III.
  • the annular stop 70 works as a scraper and pushes the tube section under consideration, which is closed on one end side by the cover 2, downwards in the direction of the conveyor 44, namely into the form driver 58.
  • This is initially in the embodiment as shown in Fig. 1, i.e. with a round lid and square bottom, opened to allow the more protruding or larger area 2 to pass, and then closes on the smaller square area.
  • the ring 70 presses the lid with the aid of the rigid side wall 1 onto the upper run of the conveyor 44 such that the lid 2 folds into the transport configuration shown in FIG. 5. This folding in is no problem because the package is still empty.
  • the station chain conveyor 44 now conveys the pack, which is still open at the top and ready to fill, in the direction of the arrow 59 to the right, a form driver 58 taking a distance a from the next one.
  • the pack passes under the filling station 56, which is designed as a piston filler, and is filled up to the upper edge 7.
  • the filling station 56 which is designed as a piston filler, and is filled up to the upper edge 7.
  • the bottom side of the state of FIG. 4 is closed in that of FIG. 3.
  • the triangular flaps 10 are then prepared for application after transverse sealing, heated in the station 92 and attached to the floor 3 by means of pressure stamps so that the shape of FIG. 2 results.
  • the triangular tabs mentioned can be folded over onto the floor itself or a side wall, depending on the design of the block bottom closure.
  • the lid which is made only of thermoplastic, is arranged, the ring collar of which can be circular, oval, polygonal or the like and protrudes outwards.
  • the ring collar In the truncated cone shape of the cover shown in the figures, it is expedient if the ring collar is arranged in the center. With other lid shapes, the ring collar can also be arranged laterally near the edge so that the pouring edge has to be closer to the edge of the lid when pouring.
  • all parts of the opening device are preferably inside the outer contour of the package, because this provides an optimal design for transport.
  • the embodiment shown in the figures shows a gripping ring which is raised at an angle of 30 ° and is molded onto the sealing plug.
  • an embodiment which is not shown in the figures and in which the gripping ring is injection-molded rotated through 180 ° is particularly expedient.
  • the main plane lies in the gripping ring parallel to the outer edge of the pack or parallel to the plane which runs through the edge of the lid. Nevertheless, the grip ring is still in its transport configuration within the outer contour of the pack.
  • the arrangement of the gripping ring in the position rotated by 180 ° out of the sealing plug is expedient because in this way the injection mold for creating the cover can be made simpler.
  • the choice of the lid shape can be subjected to certain variations according to the injection mold.
  • the pouring opening could be formed on an accordion or bellows-shaped device.
  • the main thing is the "bottom cover form" for the transport of the pack or the "cover form” when pouring.
  • the invention is especially for that consist only of thermoplastic material the lid was given the opportunity to create many desired opening arrangements while also utilizing the cold deformation options in order to give the lid various shapes, for example the optimal shape for transport on the one hand and the optimal shape for the pouring process on the other. In this sense, cold deformation can be understood as pushing the cover into the transport shape or pulling it out into the use form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Making Paper Articles (AREA)
  • Closing Of Containers (AREA)
  • Packages (AREA)
  • Cartons (AREA)
EP81108887A 1980-11-15 1981-10-24 Récipient pour produits coulants comprenant un dispositif d'ouverture refermable Expired EP0052261B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108887T ATE18523T1 (de) 1980-11-15 1981-10-24 Packung fuer fliessfaehige fuellgueter mit wiederverschliessbarer oeffnungsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3043134A DE3043134C2 (de) 1980-11-15 1980-11-15 Packung für fließfähige Füllgüter
DE3043134 1980-11-15

Publications (2)

Publication Number Publication Date
EP0052261A1 true EP0052261A1 (fr) 1982-05-26
EP0052261B1 EP0052261B1 (fr) 1986-03-12

Family

ID=6116859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108887A Expired EP0052261B1 (fr) 1980-11-15 1981-10-24 Récipient pour produits coulants comprenant un dispositif d'ouverture refermable

Country Status (8)

Country Link
US (1) US4604850A (fr)
EP (1) EP0052261B1 (fr)
JP (1) JPS57115335A (fr)
AT (1) ATE18523T1 (fr)
AU (1) AU546646B2 (fr)
CA (1) CA1171387A (fr)
DE (2) DE3043134C2 (fr)
ES (1) ES274381Y (fr)

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EP0078403A3 (en) * 1981-10-07 1983-08-03 Tetra Pak Developpement Sa Container for fluids provided with a plastics closure
EP0093849A3 (en) * 1982-05-07 1984-10-03 Tetra Pak Developpement Sa Package for fluid materials with a reclosable opening
DE3439492A1 (de) * 1984-10-27 1986-05-07 Altstädter Verpackungsvertriebs Gesellschaft mbH, 6102 Pfungstadt Fluessigkeitspackung mit griff
EP0144736A3 (en) * 1983-12-02 1986-09-10 Tetra Pak Developpement Sa Package for liquids
EP0358083A3 (en) * 1988-09-06 1990-10-17 Tetra Pak Finance & Trading S.A. Package for a food product
WO2008006907A1 (fr) * 2006-07-13 2008-01-17 Sig Technology Ag Emballage composite en carton/matière plastique avec couvercle extractible ainsi que procédé et dispositif pour sa fabrication
US7387217B2 (en) 2001-09-12 2008-06-17 Tetra Laval Holdings & Finance S.A. Method of molding plastic part to container made of flexible web material, a device therefor, and container having plastic part molded thereto

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JPS61188910U (fr) * 1985-05-20 1986-11-25
DE3531663A1 (de) * 1985-09-05 1987-03-12 Altstaedter Verpack Vertrieb Verfahren zur herstellung einer fluessigkeitspackung und vorrichtung zur durchfuehrung des verfahrens
FI854818A0 (fi) * 1985-12-04 1985-12-04 Yhtyneet Paperitehtaat Oy Foerfarande foer framstaellning av en foerpackning.
US4788811A (en) * 1986-05-17 1988-12-06 Dai Nippon Insatsu Kabushiki Kaisha Process and apparatus for assembling and liquor-charging of packages of paper and the like
US4909434A (en) * 1988-05-20 1990-03-20 The Procter & Gamble Company Moisture impervious carton having one-piece pouring spout sealed to innermost and outermost surfaces
US4895193A (en) * 1988-10-14 1990-01-23 Elopak Systems A.G. Container filling system
US4988016A (en) * 1989-01-30 1991-01-29 James P. Hawkins Self-sealing container
CH678846A5 (fr) * 1989-02-22 1991-11-15 Tetra Pak Romont
CH680279A5 (fr) * 1989-03-21 1992-07-31 Tetra Pak Romont
DE3917609A1 (de) * 1989-05-31 1990-12-06 Tetra Pak Gmbh Packung fuer fliessfaehige fuellgueter mit angespritztem griff, verfahren zum anspritzen des griffes und vorrichtung hierfuer
CH679147A5 (fr) * 1989-06-07 1991-12-31 Tetra Pak Romont
DE3927199A1 (de) * 1989-08-17 1991-02-21 Tetra Pak Gmbh Vorrichtung zur herstellung einer fliessmittelpackung
US5125886A (en) * 1989-12-15 1992-06-30 The Procter & Gamble Company One piece pouring spout sealed to innermost and outermost surfaces of moisture impervious carton
US5100369A (en) * 1990-08-24 1992-03-31 International Paper Company System for continuous high speed application of fitments to carton blanks
US5219320A (en) * 1991-02-20 1993-06-15 Capitol Spouts, Inc. Method of and apparatus for attaching a spout to a planar portion of a container
SE9100921L (sv) * 1991-03-27 1992-09-28 Tetra Alfa Holdings Oeppningsanordning foer en foerpackningsbehaallare samt saett att framstaella densamma
GB9112964D0 (en) * 1991-06-15 1991-08-07 Odin Dev Ltd Packaging
US5353573A (en) * 1992-09-16 1994-10-11 Unique Packaging, Inc. Apparatus and method for forming, filling and sealing closed individual pinch pouches
JPH07501997A (ja) * 1992-09-30 1995-03-02 テトラ　レックス　パッケイジング　システムズ　インコーポレイティド 注入部材取付け方法及び装置
US5624528A (en) * 1992-09-30 1997-04-29 Tetra Rex Packaging Systems, Inc. Apparatus for attaching a spout to a carton
WO1995010408A1 (fr) * 1993-10-15 1995-04-20 Portola Packaging, Inc. Appareil et procede pour la fixation d'ensembles verseurs sur des cartons
US5601669A (en) * 1994-10-04 1997-02-11 Portola Packaging, Inc. Apparatus and method for attaching fitments to cartons
US5867966A (en) * 1996-04-25 1999-02-09 Tetra Laval Holdings & Finance Sa Method and apparatus for forming the top of a container
US5704541A (en) * 1996-04-25 1998-01-06 Tetra Laval Holdings & Finance S.A. Flat-top container with an opening fitment
US5829228A (en) * 1996-04-25 1998-11-03 Tetra Laval Holdings & Finance, Sa Method and apparatus for forming the top of a container
US5943840A (en) * 1996-04-25 1999-08-31 Tetra Laval Holdings & Finance, Sa Method and apparatus for forming the top of a container with a fitment thereon
US5759143A (en) * 1996-11-01 1998-06-02 Portola Packaging, Inc. Fitment applicator
SE511170C2 (sv) 1997-01-29 1999-08-16 Tetra Laval Holdings & Finance Sätt att hantera, fylla och försluta förpackningsbehållare
US6047525A (en) * 1998-11-25 2000-04-11 Thatcher Tubes Llc Plant for manufacturing and packing thermoplastic tubes
US6431434B1 (en) 1999-09-23 2002-08-13 Keith Louis Haughton Individual beverage carton with a straw therein and a method of manufacture
US6354062B1 (en) 1999-05-13 2002-03-12 Bevtek Inc. Method of manufacture of individual beverage carton with a straw therein
EP1261526A1 (fr) * 2000-03-08 2002-12-04 Crystal B.V. Boite etanche et son procede et dispositif de fabrication
USD448286S1 (en) 2000-04-06 2001-09-25 Tetra Laval Holdings & Finance S.A. Packaging container
USD447941S1 (en) 2000-04-06 2001-09-18 Tetra Laval Holdings & Finance S.A. Packaging container
USD447940S1 (en) 2000-04-06 2001-09-18 Tetra Laval Holdings & Finance S.A. Packaging container
USD448285S1 (en) 2000-04-06 2001-09-25 Tetra Laval Holdings & Finance S.A. Packaging container
JP4354128B2 (ja) * 2001-04-26 2009-10-28 株式会社細川洋行 口部付き袋の製造方法
USD480965S1 (en) 2001-06-05 2003-10-21 Tetra Laval Holdings & Finance S.A. Packaging
USD494861S1 (en) 2001-11-30 2004-08-24 Tetra Laval Holdings & Finance Sa Packaging container
SE524052C2 (sv) * 2002-01-21 2004-06-22 Tetra Laval Holdings & Finance Förpackningsmaskin, enkelt omställbar för tillverkning av olika förpackningstyper
USD491801S1 (en) 2002-05-17 2004-06-22 Tetra Laval Holdings & Finance Sa Multipack
USD501397S1 (en) 2002-05-24 2005-02-01 Tetra Laval Holdings & Finance S.A. Package for liquids
USD489974S1 (en) 2002-07-03 2004-05-18 Tetra Laval Holdings & Finance S.A. Packaging
ITBO20020485A1 (it) * 2002-07-25 2004-01-26 Azionaria Costruzioni Acma Spa Impianto per formare contenitori , in particolare contenitori per prodotti alimentari
ITBO20020486A1 (it) * 2002-07-25 2004-01-26 Azionaria Costruzioni Acma Spa Macchina per formare contenitori , in particolare contenitori per prodotti alimentari
US20040206052A1 (en) * 2003-04-17 2004-10-21 Gary Shean Food packaging system
USD537726S1 (en) 2003-05-09 2007-03-06 Tetra Laval Holdings & Finance S.A. Packaging
WO2005009843A2 (fr) * 2003-07-17 2005-02-03 Induflex Robert Morgan Dispositif tournant
USD532687S1 (en) 2003-12-09 2006-11-28 Tetra Laval Holdings & Finance S.A. Container
USD538155S1 (en) 2003-12-09 2007-03-13 Tetra Laval Holdings & Finance S.A. Container
ITBO20040312A1 (it) * 2004-05-18 2004-08-18 Azionaria Costruzioni Acma Spa Macchina per formare contenitori.
GB0503892D0 (en) * 2005-02-25 2005-04-06 Elopak Systems Improvements in or relating to packaging
GB0605136D0 (en) * 2005-05-02 2006-04-26 Elopak Systems Apparatus and method
JP2007008532A (ja) * 2005-06-30 2007-01-18 Nihon Tetra Pak Kk 包装容器
SE529720C2 (sv) * 2006-03-10 2007-11-06 Tetra Laval Holdings & Finance Metod att tillverka en förpackning
JP4973979B2 (ja) * 2006-09-25 2012-07-11 日本テトラパック株式会社 包装容器製造方法
DE102008041102A1 (de) * 2008-08-07 2010-02-11 Robert Bosch Gmbh Verfahren und Vorrichtung zur Herstellung einer Verpackung
ITBO20100049A1 (it) * 2010-01-27 2011-07-28 Ica Spa Confezionatrice di sacchetti con giostra intermittente a mandrini verticali
DE102010027617A1 (de) * 2010-07-20 2012-01-26 Bernd Hansen Verfahren und Vorrichtung zum Herstellen und Befüllen von Behältern aus thermoplastischem Kunststoff sowie derart hergestellter Behälter
WO2016073943A1 (fr) * 2014-11-06 2016-05-12 Rodella Kristina Bouchon et récipient d'emballage de boissons en carton

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078403A3 (en) * 1981-10-07 1983-08-03 Tetra Pak Developpement Sa Container for fluids provided with a plastics closure
EP0093849A3 (en) * 1982-05-07 1984-10-03 Tetra Pak Developpement Sa Package for fluid materials with a reclosable opening
EP0144736A3 (en) * 1983-12-02 1986-09-10 Tetra Pak Developpement Sa Package for liquids
DE3439492A1 (de) * 1984-10-27 1986-05-07 Altstädter Verpackungsvertriebs Gesellschaft mbH, 6102 Pfungstadt Fluessigkeitspackung mit griff
EP0180028A3 (en) * 1984-10-27 1988-08-03 Tetra Pak Developpement Sa Liquid-package with a handle
EP0358083A3 (en) * 1988-09-06 1990-10-17 Tetra Pak Finance & Trading S.A. Package for a food product
US7387217B2 (en) 2001-09-12 2008-06-17 Tetra Laval Holdings & Finance S.A. Method of molding plastic part to container made of flexible web material, a device therefor, and container having plastic part molded thereto
WO2008006907A1 (fr) * 2006-07-13 2008-01-17 Sig Technology Ag Emballage composite en carton/matière plastique avec couvercle extractible ainsi que procédé et dispositif pour sa fabrication

Also Published As

Publication number Publication date
JPS57115335A (en) 1982-07-17
US4604850A (en) 1986-08-12
AU7707881A (en) 1983-05-26
EP0052261B1 (fr) 1986-03-12
DE3043134A1 (de) 1982-06-03
CA1171387A (fr) 1984-07-24
DE3043134C2 (de) 1986-06-19
AU546646B2 (en) 1985-09-12
JPS629019B2 (fr) 1987-02-26
DE3174075D1 (en) 1986-04-17
ES274381U (es) 1984-01-16
ES274381Y (es) 1984-08-16
ATE18523T1 (de) 1986-03-15

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