EP0727352A2 - Procédé pour la fabrication de sachets tenant debout - Google Patents

Procédé pour la fabrication de sachets tenant debout Download PDF

Info

Publication number: EP0727352A2
Authority: EP; European Patent Office
Prior art keywords: bag; fin; folded; seam; filling
Prior art date: 1995-02-16
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

EP96102025A

Other languages

German (de)

English (en)

Other versions

EP0727352A3 (fr

EP0727352B1 (fr

Inventor

Paul Utz

Gerald Schubert

Paul Wollmershäuser

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.)

Schubert Packaging Systems GmbH

Original Assignee

International Packaging Systems GmbH

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.)

1995-02-16

Filing date

1996-02-12

Publication date

1996-08-21

1996-02-12 Application filed by International Packaging Systems GmbH filed Critical International Packaging Systems GmbH

1996-08-21 Publication of EP0727352A2 publication Critical patent/EP0727352A2/fr

1997-11-19 Publication of EP0727352A3 publication Critical patent/EP0727352A3/fr

2000-08-09 Application granted granted Critical

2000-08-09 Publication of EP0727352B1 publication Critical patent/EP0727352B1/fr

2016-02-12 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/02—Machines characterised by the incorporation of means for making the containers or receptacles

Definitions

the invention relates to a method for producing, filling and closing a packaging bag and the packaging bag suitable for this.
Pure paper or coated paper is very often used as the bag material.
the bags used for filling can either be produced separately before the filling process in a separate system, usually by a specialized bag manufacturer, and entered into the system for filling and closing, or the bags can be found online, i.e. in the system directly upstream of the filling station, just-in-time made from sheet material from the roll and then filled, sealed and further packed.
the bags made from the roll online with the filling and packaging process usually have a fin which is formed and taped below the bottom of the bag and which represents the closure of the bag tube, but which is rather detrimental to the accuracy and durability of the bag bottom.
the bag in the bottom area is not simply pulled apart or pressed apart by the filling material, but the bottom area is actively shaped by means of a stamp and counter-punch, with the longitudinal edges of the bottom, which connect the two end gussets, above the inside of the bag arranged, raised fold edges and from the outside pressing, correspondingly shaped recesses.
this pressing of the bottom of the bag additionally works at an elevated temperature of the paper or its coating material, so that after the temperature has been reduced to normal ambient temperature after the pressing of the bottom region, additional stabilization occurs due to the cooled coating.
the temperature of the coating or of the paper reached in this case is lower than that of the individual sealing processes carried out during the production or sealing of the bag, in which the individual layers of the paper or its inner and outer coatings are bonded to one another.
sealing processes are partially carried out by means of the known method of heat sealing, at least the corresponding, affected coatings having to consist of a heat-sealable material, but at least some of the sealing processes, preferably even all sealing processes, are carried out by means of ultrasound, the coating materials concerned or the used surface material itself must connect when subjected to ultrasound, z. B. by at least pastry, preferably even become liquid, and thereby stick to one another, or also through increased material diffusion.
the fin forming the bottom closure of the packaging bag and striving downwards towards the outside is made relatively large, so that after it has been folded down into the plane of the bag bottom, with a central arrangement of the fin in the bag bottom, essentially a whole half of the Covers the bag bottom and is additionally stabilized by the subsequent connection to the bag bottom.
This connection also takes place using a counter-holder in the interior of the bag in order to no longer have a negative influence on the shape of the bag bottom which has already taken place.
Both the bottom form stamp, which is inserted into the inside of the bag for pressing the bottom of the bag, and the counter-holder, which is used when connecting the folded fin to the outside of the bag bottom, consists of more than one part, for insertion from the open top of the bag to facilitate her, and only shortly before reaching the bag bottom to expand these parts to the actual dimensions of the bag bottom.
the bottom die and the counterholder therefore preferably consist of two parts, which are almost as long as the length of the bag bottom, but can be moved relative to one another in the width of the bag.
both are preferably connected to the ends of a V-shaped scissor linkage, the center of which is coupled to a pneumatic unit mounted on the mechanism, so that shortly before the desired one is reached End position a spreading of the V-shaped linkage and thus a moving apart of the two parts of the bottom form punch or the counter-holder to the width of the bag bottom is achieved.
the stamp for shaping the base area can also be implemented beforehand.
the side parts of the bag are kept apart, preferably by means of suction cups distributed over their surface and attacking from the outside, the free upper edge of the bag preferably being additionally opened by means of mechanical openers in the form of cranked sheets which can be pivoted into the upper region of the bag being held.
the bag tube is made for the manufacture of a bag from the endless bag tube by means of a known K transverse seam and subsequent K seams locked. Due to the simple inward folding of the side areas of the later bag during the manufacture of the flat-folded, endless bag tube, two layers of paper lie one above the other in the central area over the cross-section of the flat-folded bag tube, but four layers in the side areas in which the side parts are folded.
the K-transverse seam which runs from one outer edge of the flat bag tube to the other, is successively from each side of the bag tube here once and thus executed twice.
a separating plate is inserted between the two middle layers of paper, so that only two layers of paper are connected to each other via their inner coating.
this transverse K cross seam does not - as usual - also form the lower free end of the fin, but due to the greater length of the fin, a further transverse seam is arranged along its free end, but this is no longer necessarily from both sides of the bag tube and so that must be run twice.
All the seams just described can be made using the conventional heat sealing technique, i.e. usually using electrically heated sealing jaws, which are pressed onto the flat folded bag tube for a limited time at the appropriate position either directly or via a teflon tape that prevents them from sticking.
the inner and outer coating of the paper used must be sealable or heat-sealable.
connection is not made by heating by means of heat conduction, but by exposure to ultrasound, as is already known for the welding of plastic films etc.
the depth effect of the ultrasound can be influenced by means of appropriate control of the ultrasound exposure, and the temperature at the sealing point, for example, can be influenced much more precisely than when sealing with hot, contracting sealing jaws below the fourth layer of the folded fin.
the ultrasonic waves are emitted by so-called sonotrodes, which are pressed under pressure on the bag - using a counterholder that presses against it from the other side - with 20 to 50, preferably 30 to 40 Kp.
a sealing seam that only extends in the two-layer, central area along the outer edge of the fin, and two sealing seams lying parallel to the width of the bag bottom along the front outer edge of the fin are used.
the longitudinal seam of the bag tube is also produced differently than previously:
the outer edges of the paper strip which are formed into a bag tube, not only overlap easily, but - as is also known in principle - three or even four times, by double-folding an edge area of the paper strip and therefore having three layers.
the uppermost layer of this overlapped area is overlapped by the other edge of the paper web and sealed with it by slowly pulling the endless bag tube under a heated sealing jaw and heating the longitudinal seam sufficiently.
a quickly replaceable Teflon tape is preferably arranged between the sealing jaw and the bag tube.
the protruding edge area and the underlying surface of the bag tube, which is used for opposite edge of the paper web is to be heated, additionally and separately, for example by means of a hot air blower, if necessary after establishing a sufficient distance between these two layers by means of a mechanical spacer wedge inserted between them.
the pressure rollers or other pressure devices arranged after the heat sealing can be made slightly wider and can thus also be used for pressing the overlapped edge area.
the remainder of the packaging bag protruding above the filling material is folded flat again, as in the production of the endless bag tube, the transition from the open, filled area to the flat-folded protrusion taking place to form a gable-shaped transition zone which should be as flat as possible for reasons of optics and packing space.
the flat-folded overhang area is folded several times inwards from the upper, free end, and is fixed in this position after repeated pounding inwards, which has hitherto usually been done by means of staples, hot glue or the like.
the formation of the gable-shaped transition zone is problematic when the excess of the bag is folded flat above the filling zone, since this again does not result in an exact shape the previously known procedures took place, and thus no exact final bag shapes could be achieved.
an exact gable formation is achieved in that, in addition to the positional fixation of the longitudinal side parts by means of outer plates attached to the outside, possibly with suction cups engaging on the bag, the narrow side parts are also held by means of outer plates and suction cups, and correspondingly gable-shaped swivel plates in the gable-shaped transition area attack the narrow-sided side parts and fold them in to form the gable, in that the swivel plates can be folded inwards from a position parallel to the narrow side part about a swivel axis running parallel to the width of the bag bottom.
a suction cup can also be arranged approximately in the middle of each of the two swivel plates, which holds the corresponding area of the respective side part.
the edges of the swivel plate that face upwards form the upper end edges of the gable-shaped area of the narrow side parts of the bag.
the upper end of the gable is now additionally fixed and, at the same time, the bag is hygienically closed by pulling an upper transverse seam from one to the other outer edge of the protruding part of the bag, which is now folded flat again.
This upper transverse seam is also sealed by means of ultrasound, it being additionally achieved by appropriate choice of the coating materials that only the inner coatings of the bag tube, which are directed against one another, are sealed against one another, and thus in the edge area, in turn by four layers of the bag tube lie one above the other, only the two outer layers are sealed against each other, but not the two middle layers against each other, which are in contact with one another with their outer coatings.
the coating arranged on the inside of the bag tube has a lower melting point or a lower temperature from which the coating becomes doughy and can stick together.
Another intended effect is that after opening the bag for the first time by tearing this transverse seam, not all of the paper and thus the bag in the region of this upper transverse seam is damaged, but only its inner coating.
the paper itself remains intact, so that even after opening and thus tearing open this upper transverse seam, it is possible to re-close it by wrapping the prefabricated, multiple envelope in the upper area, since the paper is not completely torn.
the transverse seam present above the filling material is formed in a zigzag shape by the Sonotrode and / or the anvil acting as a counter-holder have such a zigzag shape.
the tines point up or down in the standing bag and should be as pointed as possible, preferably with an intermediate angle of less than 100 °, preferably less than 70 °. Since the tearing takes place by pulling apart from above, a flat tearing is started from the top teeth and is only conveyed in the coating material on the inside, without tearing through the paper which acts as a carrier material.
Fixing the multiple wrapping in the same direction, especially at its edge areas, which - depending on the number of wrapping - thus comprises a multiple of four layers, is preferably done again by ultrasound, because despite the large number of paper layers available due to the adjustable Depth effect a sealing in the desired depth range is possible.
the goal is to fix the multiple wrap at the upper end of the bag by connecting the respective outer coatings of the bag tube, while the underlying transverse seam, which is arranged directly above the filling material, should only seal by means of the inner coating.
the area above the internal sealing transverse seam can also be provided with a different outer coating and / or different inner coating than the area below, and thus the area in which this occurs inside sealing cross seam.
the cross seam directly above the filling material only adheres or sticks with the inner coating, the overlying seals of the wrap at the upper end, however, only with the outer coatings.
the melting temperature or dough temperature of the inner coating should be significantly higher in the lower area than that of the outer coating, while the reverse must apply in the upper area.
Preferred layer thicknesses are 20 microns of polyethylene on the inside and 15-20 microns of polypropylene on the outside of the later bag tube, so-called low-density polyethylene is preferably used as the polyethylene on the inside, which then only has a layer thickness of about 15 microns . With this choice, a low paper weight of only around 60 g / m 2 is also preferred.
Such a material uses ultrasound in the range of approximately 40 kHz. If the contact areas of the sonotrodes are usually narrow, almost linear, with a contact area width of 1 to 5 mm, the length of the contact areas of the sonotrodes should not exceed 150 mm. Instead of a bar-shaped configuration of the sonotrode, a narrow, zigzag-shaped design also offers advantages from this point of view.
the frequency must be reduced to about 20 kHz, in which case the maximum length of the sonotrodes may be up to about 300 mm.
the maximum length of the sonotrodes may be up to about 300 mm.
the sonotrodes can also be cooled, e.g. liquid-cooled or cooled to room temperature by means of compressed air, whereby the control of the sealing process can be improved.
the sealing jaws are supplied with a constant current and are constantly heated.
the sealing temperature generated by the sealing jaws in the bag material is influenced by a number of additional factors, for example the cycle time of the seals, since energy is extracted from the sealing jaw during each sealing process. If there is therefore an acceleration or deceleration of the cycle, for example a failure-related, short standstill of the sealing device, then the temperature at the sealing point is significantly different, e.g. B. higher than intended.
the bags according to the invention are used in particular for the packaging of individual products which have a low dimensional stability, in particular of stacked individual products.
the packaging bag is not only kept open by suction cups on all four side walls, but in addition the top, open edges of the bag are held open by longitudinal and frontal retaining flaps, which partially swivel into the bag from above, and at the same time provide sliding surfaces for those to be lowered Single product stack.
the number of stacks to be introduced during a filling process can be changed in accordance with the packaging bags to be filled at a time.
a bag tube which is endless in principle, is created from the sheet material, usually coated paper, which is usually on a roll.
the strip-like sheet material hereinafter simply referred to as paper 2
a shaped plate 36 which is only about half as wide as the strip of paper 2 coming from the roll.
the laterally protruding edge regions of the paper become turned over by means of corresponding guide devices, guide plates, etc., so that the shaped plate is completely covered by paper and overlaps the latter in one area in order to be able to produce a longitudinal seam 19 in this overlapped area 20 by connecting the outer edge areas of the paper strip to one another.
the production of this longitudinal seam 19 is shown in FIGS. 1:
the edge areas of the paper strip not only simply overlap, but one of the edge areas is bent into a U-shape and is therefore in two layers.
This two-ply area of one paper edge is overlapped by the other paper edge.
the bag tube moving continuously perpendicular to the plane of FIG. 1 is heated and pressed at the same time by means of a stationary heated sealing jaw 23 lying in the direction of the longitudinal seam 19, so that the inner coatings 4 of the paper 2, which consist of heat-sealable plastics, are so far are heated so that they become doughy or liquid and stick together.
the sealing jaw 23 In order to avoid damage to the visible outer coating 3 of the layer 27 of the paper 2 lying outside in this overlapped area 20 by pulling under the standing sealing jaw 23, the sealing jaw 23 is not applied directly but with the interposition of a Teflon tape 37, and the pressure regulated so that a sufficient There is heat transfer for effecting the bond, but not so great sliding friction between the outer coating of the paper 2 and the Teflon tape 37 that this coating is damaged.
the U-shaped fold of the inner paper edge at the longitudinal seam 19 serves to increase the security of the bond, since the additional paper layers provide a slight increase in the area of the longitudinal seam 19 compared to the other areas on the same side of the shaped plate 36.
the pressing sealing jaw 23 is at most as wide as the U-shaped, overlapping area 20 of the longitudinal seam 19. However, the outer edge of the paper web projects slightly beyond this overlapping area 20 and forms a projecting edge area 21 around the actual longitudinal seam 19 to cover optically.
this protruding edge area is not glued in the prior art - since it is not in the area of the sealing jaw 23 - and is therefore loosely projecting, can thus be pulled up and damaged, and is clearly visible even with a simple twist due to the then visible inside of the paper 2 or the inner coating 4, which is usually has a different color than the outer coating 3.
the coatings themselves are usually colorless, on the outside of the paper 2, however, the desired outer color and the printing of the packaging bag 1 are initially arranged under the outer coating 3.
the protruding edge region 21 of the outer layer 27 in the region of the longitudinal seam 19 is also glued to the underlying bag tube 7.
the protruding edge region 21 is first brought to a distance from the underlying paper 2 of the bag tube 7 by means of a guide wedge 38, which is stationary, as is the sealing jaw 23, and hot air is blown into this space by means of a heating fan 39, so that at least the inner coating 4 of the protruding edge area 21 and the underlying outer coating 3 of the bag tube 7 are heated to such an extent that when the two coatings are subsequently pressed against one another by means of a pressure roller 40 or the like - as shown in FIG. 1b - the protruding edge area 21 is glued.
an endless bag tube 7, closed in cross section, is thus available. This is also simply turned inwards by means of devices known per se on its side parts 6, i.e. from the outer edges 22 of the bag tube 7, so that the distance between the side edges 22 is reduced, and in the outer areas of the bag tube 7 the paper the E-shaped fold is four-ply, as can be seen better in FIGS.
the shaped plate 36 should have a groove on its narrow longitudinal sides - dashed in FIG. 1b - for receiving the E-shaped fold-in.
this transverse K-transverse seam 9 not only increases the security against gluing in the central area, but also means that an intermediate plate 42 is pushed in from the sides when the oblique K-seams 10 are created, so that the K- Seams 10 in each case only the two uppermost layers of paper 2 are glued to one another by means of their inner coatings 4 lying opposite one another. Sealing from both sides
the two middle layers are not glued to one another by means of their outer coating 4, in contrast to the transverse K transverse seam 9, which firmly connects all four layers in the edge region 31, and thus also the two middle layers to one another.
the K-seam 9 is not placed very close to the lower end of the bag 1, but at such a distance that the protruding fin 8 produced by the K-seam 9 has an extension in the longitudinal direction of the bag tube 7 that is approximately half corresponds to the later width of the bag.
the free end of the fin 8 is finally simply sealed by means of a further sealing jaw 23 '' 'with a further transverse seam 18 at the end, whereby, however, no secure, tight closure of all layers of the flat bag tube 7 against one another is guaranteed, but a connection which is firm enough to ensure that to facilitate later handling of this fin 8.
the packaging bags 1 created in this way are then passed through suitable handling devices, preferably by means of suction cups 28 and preferably already in the correct, vertical position, opened by the suction cups 28, 28 'engaging on the opposite side parts 6 on the outside, and moving them apart, as a result of which the packaging bag 1 merges into the open state.
suitable handling devices preferably by means of suction cups 28 and preferably already in the correct, vertical position, opened by the suction cups 28, 28 'engaging on the opposite side parts 6 on the outside, and moving them apart, as a result of which the packaging bag 1 merges into the open state.
the fin 8 projects downwards in the middle with a length which corresponds to approximately half the width of the bottom 15 of the bag.
a vertically movable mechanism is inserted into the packaging bag 1 from the upper, open side, to which a multi-part bottom form stamp 11 is fastened via a scissor linkage 1.
the two parts 11a, 11b of the bottom die 11 have a length corresponding to the length of the bottom longitudinal edges 16 of the bag bottom 15 (or can be extended telescopically up to this length), but together they result in a substantially smaller width than the width 5 of the bag bottom 15.
the two parts 11a, 11b are each articulated when inserted into the bag 1 at the end of a strut 43a, 43b of the scissors linkage 43, the intermediate angle 44 of which is relatively small when the bottom shaping stamp 11 is inserted into the bag to prevent the bottom shaping stamp 11 from being inserted to facilitate the bag bottom 15.
This intermediate angle is then increased. in that the hydraulic cylinder arranged on the mechanics pushes apart the struts 43a, b mounted on the mechanics until the parts 11a, b of the base mold stamp attached to them have reached the outer edges of the bag interior.
the two parts 11a, 11b of the bottom die 11 have raised fold edges 13a, 13b along their outer, lower, longitudinal edges directed towards the bag bottom 15. Shortly before reaching the bag bottom 15, the parts 11a, 11b of the bottom shape stamp 11 are brought to a distance by enlarging the intermediate angle 44 so that the folded edges 13a, 13b rest on the rear sides of the bottom longitudinal edges 16 and are held in this position with the aid of the bottom shape stamp 11 including the scissors linkage 43 supporting device.
bottom molds 12a, 12b are now approximated from the underside of the bag bottom 15 against the parts 11a, 11b of the bottom die 11 and the bag bottom 15 is pressed in between.
the bottom molds 12a, 12b have depressions 14a, 14b corresponding to the raised fold edges 13a, 13b, so that the longitudinal edges 16 of the bag bottom 15 in particular are given a permanent shape by this pressing process.
the bag After removing the bottom form stamp 11 and the bottom form backdrop 12, which preferably takes place after the paper 2 has partially cooled again, the bag has an exactly shaped bag bottom 15.
the folded fin 8 is welded with one half of the bag bottom by means of ultrasound, by pressing ultrasonic sealing jaws 53, 53 'against the fin 8 from below.
Counterholders 17a, 17b which are inserted into the inside of the bag 1 and serve as counterholders, are fastened to an analog scissor linkage 43a, 43b like the bottom form stamp 11a, 11b.
These counterholders 17a, 17b can therefore be inserted into the open bag 1 from above in a relatively approximated state, and are only moved apart by increasing the intermediate angle between the scissor arms 43a, 43b when they reach the bottom of the bag so that they are on the inside of the bag Bottom 15 and the inside of the bottom longitudinal edges 16 of the bag 1 and apply the necessary counterforce for the ultrasonic sealing jaws 53, 53 '.
the counterholders 17a, 17b also overlap somewhat in the moved-apart state, the one counterholder 17b having an underside 46 lying directly against the bag bottom 15, which corresponds in cross-sectional representation to at least the dimensions of the folded fin 8.
the ultrasonic sealing jaws 53, 53 ' are guided against the bag 1 with approximately 30 to 40 kg of pressing force.
the ultrasonic sealing jaws 53 attach to the folded fin 8 on the side edges thereof, in which the fin has four layers due to the lateral turning inwards. Using ultrasound, it is nevertheless possible to seal at least the lowest position of the fin 8 with the base 15, which is closest to the base 15.
the ultrasonic sealing jaw 53 'seals part of the longitudinal edge 32 at the free end of the fin 8, and only in its central region, in which the fin 8 is formed only in two layers, so that the sealing there is to be carried out by means of ultrasound with other setting parameters.
the packaging bag 1 is thereby suction cups 28 resting against the side walls kept open, and additionally by longitudinal and frontal retaining flaps 29, 30, which are curved in cross section, and can be pivoted about a pivot axis outside the packaging bag 1 in the vicinity of its upper, free edge so that in the pivoted-in state, the retaining flap extends over the corresponding one
the upper edge of the open packaging bag 1 extends slightly into the inside of the bag, thereby protecting the free edge of the bag from damage.
the curved outer surface of the holding flaps 29, 30, which additionally point into the interior of the packaging bag 1 slightly misdirected fillings are still guided into the interior of the bag 1.
the bags 1 are far from being filled up to the upper, open edge, since the protrusion of the bag 1 over the filling serves to close the bag 1.
the supernatant has been brought back into the flat-folded state, with the side parts 6 folded inwards, as when the bag tube 7 was manufactured, so that a gable 54 must be created as a transition between the filled area and the protruding area.
pivot plates 25 close and parallel to the side parts 6, the upper end of which has the intended gable shape and which is parallel to the bag bottom 15, just above the filling on the side parts 6 of the packaging bag 1 extending pivot axis are pivotable so that their upper, gable-shaped end moves into the interior of the bag and thereby folds the side part 6 in a gable shape.
the swivel plates 25 have suction devices 26 directed against the side parts 6 in order to ensure a defined folding of these side parts.
the bag can continue to be provided by further, adjacent suction cups 28 as well as stabilizing plates resting on the longitudinal outer surfaces - with or without attacking the bag Suction cups - be kept in a stable open position in the area of the filling.
sealing takes place immediately at the lower end of the folded-over projection 60 of the bag 1, by a counter-holder 59 being brought from one side and an ultrasonic sealing jaw 58 being brought to this projection 60 approximately parallel to the bag bottom 15 and against one another from the other side be pressed.
Both parts extend over the entire length of the bag 1, as a result of which the inner coatings 4 of the individual layers 27 take place, as can be seen in FIG. 5e, in that the ultrasonic sealing jaw 58 and / or the counter-holder 59 are zigzag-shaped, with tips pointing upwards and downwards are formed and / or the energy supplied and other parameters that can be set for the ultrasound sealing, such as exposure time, contact pressure, etc., are regulated so that in the middle, two-layer area of the projection 60, the two outer layers 27a, 27b, which are only present there, with their inner coatings 4 with one another are welded by means of ultrasound, but in the region of the four-layer edge regions 31 only the two outer layers 27a, 27c and 27d, 27b are in turn connected to one another by means of their inner coatings. A connection of the two middle layers 27c, 27d by means of the outer coatings 3 lying against one another does not take place and is also not desired.
the pivoted-in swivel plates 25 are brought out of contact with the bag 1.
the upper protrusion 60 is turned over several times in the same direction, and then this rolled-up upper edge 61 is fixed by again, essentially horizontally, an ultrasonic sealing jaw 58 'and a counter-holder 59' from opposite sides be brought up to the rolled up upper edge and fix it under pressure using ultrasound.
an ultrasonic sealing jaw 58 'and a counter-holder 59' from opposite sides be brought up to the rolled up upper edge and fix it under pressure using ultrasound.
Not all, but only a few, preferably only one of the outer coatings are connected to one another, but not over the entire length of the rolled edge 61, but possibly only in its lateral, outer regions.
the sealing jaws 58 and 58 'and the counterholders 59 and 59' with the bag which has been transported further preferably move in order to simultaneously use the transport time for the sealing.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Making Paper Articles (AREA)

EP96102025A 1995-02-16 1996-02-12 Procédé pour la fabrication de sachets tenant debout Expired - Lifetime EP0727352B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19505300A DE19505300C2 (de)	1995-02-16	1995-02-16	Standfeste Tüte
DE19505300		1995-02-16

Publications (3)

Publication Number	Publication Date
EP0727352A2 true EP0727352A2 (fr)	1996-08-21
EP0727352A3 EP0727352A3 (fr)	1997-11-19
EP0727352B1 EP0727352B1 (fr)	2000-08-09

Family

ID=7754188

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP96102025A Expired - Lifetime EP0727352B1 (fr)	1995-02-16	1996-02-12	Procédé pour la fabrication de sachets tenant debout

Country Status (2)

Country	Link
EP (1)	EP0727352B1 (fr)
DE (2)	DE19505300C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102023122623A1 (de) *	2023-08-23	2025-02-27	Syntegon Technology Gmbh	Vorrichtung zum Aufhalten der Öffnung eines Beutels

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3120089A (en) *	1960-11-07	1964-02-04	Ex Cell O Corp	Machine for forming plastic coated paperboard containers
DE1290473B (de) *	1963-12-30	1969-03-06	Vogt Clarence W	Vorrichtung zum Herstellen, Fuellen und Verschliessen von Verpackungen
US3855907A (en) *	1973-05-18	1974-12-24	Rexham Corp	Method and machine for forming flat bottom bags having side gussets
US3988970A (en) *	1974-05-22	1976-11-02	Violet M. Hanson	Apparatus for forming flat bottom plastic bags
CH608755A5 (fr) *	1976-09-30	1979-01-31	Sig Schweiz Industrieges
IT1156568B (it) *	1982-03-18	1987-02-04	Ica Spa	Macchina confezionatrice verticale per sacchetti a tensostruttura autoportante erettile a fondo piano
US4614079A (en) *	1984-03-30	1986-09-30	Toppan Printing Co., Ltd.	Automatic packaging system
DE3926728A1 (de) *	1989-08-12	1991-02-21	Kodron Rudolf S Dipl Ing	Verpackungsbeutel fuer feste, rieselfaehige oder fluessige fuellgueter
DE4105452C2 (de) *	1991-02-21	1995-07-06	Icoma Packtechnik Gmbh	Vorrichtung zum Formen von Seitenfaltensäcken oder -beuteln mit Falzboden
DE4234857A1 (de) *	1992-10-15	1994-04-28	Goerig Verpackungsmasch Gmbh	Verfahren und Vorrichtung zum Herstellen von einseitig offenen, trommel- oder beutelartigen Behältern

1995
- 1995-02-16 DE DE19505300A patent/DE19505300C2/de not_active Expired - Fee Related
1996
- 1996-02-12 EP EP96102025A patent/EP0727352B1/fr not_active Expired - Lifetime
- 1996-02-12 DE DE59605690T patent/DE59605690D1/de not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP0727352A3 (fr)	1997-11-19
EP0727352B1 (fr)	2000-08-09
DE19505300C2 (de)	1998-02-19
DE19505300A1 (de)	1996-08-22
DE59605690D1 (de)	2000-09-14

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