EP0811558B1 - Dispositif de scellement transversal pour une machine d'emballage - Google Patents

Dispositif de scellement transversal pour une machine d'emballage Download PDF

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Publication number
EP0811558B1
EP0811558B1 EP19970303687 EP97303687A EP0811558B1 EP 0811558 B1 EP0811558 B1 EP 0811558B1 EP 19970303687 EP19970303687 EP 19970303687 EP 97303687 A EP97303687 A EP 97303687A EP 0811558 B1 EP0811558 B1 EP 0811558B1
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EP
European Patent Office
Prior art keywords
bag
making material
transverse
path
sealing
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.)
Expired - Lifetime
Application number
EP19970303687
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German (de)
English (en)
Other versions
EP0811558A3 (fr
EP0811558A2 (fr
Inventor
Masao c/o Ishida Co. Ltd. Fukuda
Yukio c/o Ishida Co. Ltd. Kakita
James Lewis
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Ishida Co Ltd
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Ishida Co Ltd
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Filing date
Publication date
Priority claimed from EP97302185A external-priority patent/EP0811557A3/fr
Application filed by Ishida Co Ltd filed Critical Ishida Co Ltd
Priority to EP19970303687 priority Critical patent/EP0811558B1/fr
Publication of EP0811558A2 publication Critical patent/EP0811558A2/fr
Publication of EP0811558A3 publication Critical patent/EP0811558A3/fr
Application granted granted Critical
Publication of EP0811558B1 publication Critical patent/EP0811558B1/fr
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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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/306—Counter-rotating devices

Definitions

  • This invention relates to a bag maker-packaging machine of the type adapted to concurrently make bags and fill them with articles such as food items for packaging.
  • this invention relates to a transverse sealer intended to be used in such a packaging machine for effecting thermal sealing of the bag-making material in the transverse direction.
  • So-called pillow-type packaging machines are a kind of bag maker-packaging machine capable of concurrently forming bags and filling these bags with articles to be packaged such as food items.
  • An elongated web of bag-making material (herein referred to as “the film”) is formed into a tubular shape by means of a device known as the former, and the film's mutually overlapping longitudinal side edges are sealed together first. While the tubularly formed film is pulled downward, it is thermally sealed in the transverse direction at the bottom by means of a transverse sealer comprising, for example, a pair of transverse seal jaws which may be disposed below a so-called filling cylinder used for filling the tubularly formed film with articles to be packaged. Because the formation of bags and the filling of the bags with articles to be packaged can be carried out concurrently and continuously, such bag maker-packaging machines are considered superior machines with high production efficiency.
  • Japanese Patent Publication Tokkai 63-30725 disclosed a bag maker-packaging machine of a so-called rotary driven type characterized as moving its pair of transverse seal jaws linearly along the direction of motion of the film while their heat-applying surfaces are contacted to the film such that the transverse sealing can be effected over a sufficiently extended period of time.
  • a transverse sealer of this type does not give rise to any problem, as the seal jaws B are moved towards each other as shown by arrows in Fig. 8A to effect transverse thermal sealing, if the internal volume of the bag S is sufficiently large compared to the bulk of the articles W inside. Depending on the kind or condition of the articles W to be packaged, however, their volume sometimes becomes too large compared to the bag. This can happen, for example, when the water content of potatoes to be packaged is unusually high. In such a situation, as depicted in Fig. 8B, portions of the articles W to be packaged may be caught between the seal jaws B as they are closed, yielding defective products as a result.
  • Such stripping means C are not necessarily effective for the purpose of reducing empty spaces inside the bag because they are intended merely to strip the articles W downward where the transverse sealing is to take place.
  • a transverse sealer for a bag maker-packaging machine, said bag maker-packaging machine having a former for bending an elongate web of bag-making material into a tubular form, wherein after articles to be packaged have been supplied into said tubularly formed bag-making material while transporting said bag-making material along a specified path, the sealer seals the said bag-making material transversely to said path, said transverse sealer comprising:
  • This invention provides an improved transverse sealer for a bag maker-packaging machine, capable of reducing empty spaces among the articles initially dropped into the tubularly formed bag-making material so as to prevent the articles from being caught between the seal jaws.
  • the articles dropped into the tubularly formed film can be pushed from opposite directions such that they can "settle" inside the bag being formed.
  • the bag becomes more effectively filled and the articles can be more dependably prevented from being caught between the seal jaws.
  • the transverse seal jaws are supported by rotary members.
  • Each of the cramming devices is adjustably supported by one of the rotary members by passing screws or bolts through elongated holes formed through either the rotary member or the cramming device itself.
  • the force applied to the articles inside the bag can thus be controlled.
  • the cramming device may comprise an elastically deformable bar such that the bar becomes elastically deformed as the articles in the bag are pressed thereby. This serves to prevent damages to the articles being pushed from outside or breakage of the film due to application of an excessive force from the cramming device.
  • the pair of stripping rods is attached to the transverse seal jaws, protruding farther towards each other than their heat-applying sealing surfaces which are in face-to-face relationship with respect to each other on opposite sides of the film.
  • a bag maker-packaging machine embodying this invention may be characterized as comprising a web-transporting means for transporting an elongated web of bag-making material ("the film”) along a specified path, a former disposed in this film path for bending this film into a tubular form, a longitudinal sealer for longitudinally sealing mutually overlapping side edge parts of the tubularly formed film, a hopper from which articles to be packaged are dropped into the film being made into a bag, and a transverse sealer of the kind described above as embodying this invention.
  • the film bag-making material
  • Fig. 1 shows a pillow-type bag maker-packaging machine incorporating a transverse sealer 10 embodying this invention. It is of a kind not requiring the so-called filling cylinder to guide articles into bags being formed.
  • a former 2 which is attached below an article receiving hopper 1, serves to bend an elongated web of bag-making material ("film”) S into a tubular form, while a pair of pull-down belts 3, disposed mutually opposite to each other below the former 2 and each provided with a suction chamber 4, serves to keep the film in the tubular form as longitudinal sealing is effected thereon by a longitudinal sealer 5 over its mutually overlapping side edges (indicated by letter a).
  • the transverse sealer 10 is disposed below the pull-down belts 3 and is adapted to seal the tubularly formed film S in the direction, indicated by arrows Y, transverse to the vertically downward direction of the film path, comprising a pair of transverse seal jaws (or transverse sealing means) 20 disposed mutually opposite each other with respect to the film path, a pair of rotary members 11 for causing the seal jaws 20 to rotate in synchronism with respect to each other while always oriented in the same direction, and pairs (left-hand side and right-hand side) of mobile outer frames 30 and inner frames 34 for causing the seal jaws 20 to move in approximately D-shaped trajectories in a vertical plane by moving axes of rotation of rotary arms 12 towards or away from each other.
  • the rotary members 11 are adapted to rotate (in directions indicated by arrows R) such that the direction of motion of the seal jaws 20 and the direction of motion of the film S will coincide when the seal jaws 20 are mutually proximal and on linear sections of their generally D-shaped trajectories.
  • each of the pair of rotary members 11 is generally U-shaped with the pair of (left-hand side and right-hand side) arms 12 connected together by a connector bar 13.
  • One of the rotary arms 12 (the one on the left-hand side in Fig. 2) is affixed to a shaft-supporting member 14 which protrudes inwardly from one on the left-hand side of the mobile frames 30, 34.
  • the other of the rotary arms 12 (the one on the right-hand side in Fig.
  • each U-shaped rotary member 11 can rotate around an axis of rotation defined by the shaft-supporting member 14 and the power-input shaft 15, by a driving power communicated thereto through the power-input shaft 15.
  • one of the transverse seal jaws 20 for sealing the tubular film S transversely is attached to sleeves 17 which are rotatably supported by the connector bar 13.
  • a sun gear 24, having a specified number of teeth, is fastened to one end of a fixed shaft 23 which penetrates the shaft-supporting member 14.
  • a planet gear 21, having the same number of teeth as the sun gear 24, is unitarily attached to one end of one of the sleeves 17. The planet gear 21 and the sun gear 24 engage with each other through an idler gear 22 in between.
  • rotary motion of drive shafts 27, adapted to be driven by an arm-rotating servo motor 29, is communicated to corresponding one of the power-input shafts 15 through a Schmidt coupling mechanism 25 of a known kind with three disks 25a, 25b and 25c mutually connected with links 26, the first disk 25a being connected to the drive shaft 27 and the third disk 25c connected to the power-input shaft 15, such that the rotation of the drive shaft 27 can be communicated to the corresponding power-input shaft 15 without causing slips in the angle of rotation or torque, independently of the distance between their axes of rotation.
  • the two drive shafts 27, each corresponding to-one of the pair of rotary members 11, are coupled to each other through mutually engaging gears 28 such that the pair of rotary members 11 will rotate in mutually opposite directions, as shown by arrows R in Fig. 1.
  • trajectory-forming means H Those of the components described above which serve to move the seal jaws on specified D-shaped trajectories will be hereinafter referred to as the trajectory-forming means H.
  • the rotary members 11, the trajectory-forming means H and the Schmidt coupling mechanism 25 will be referred to as the power-transmitting means P.
  • the drive shafts 27, the mutually engaging gears 28 therefore and the arm-rotating servo motor 29 are referred to as the driving means Q.
  • a generally U-shaped stripping rod 42 having leg parts 42a extending perpendicularly from both ends of its transversely extended stripping part 42b, is attached to each seal jaw 20 for stripping down articles to be packaged inside a bag being formed immediately before its upper edge is transversely sealed such that they will not be caught where the sealing takes place.
  • the leg parts 42a of the stripping rod 42 are inserted into brackets 43 which are attached to inner walls of the rotary arms 12 and are biased by springs 44, as schematically shown in Fig. 5, such that the stripping part 42b protrudes towards the film S from the frontal heat-applying sealing surface M of the sealing jaw 20.
  • the trajectory-forming means H is adapted to cause the stripping parts 42b of the pair of stripping rods 42 to sandwich the film S therebetween before the mutually opposite sealing surfaces M of the pair of seal jaws 20 come to contact each other and to move in the direction of motion (indicated by letter A in Fig. 1) of the film S, such that the articles which have been dropped inside the bag being formed are stripped downward from the area where the sealing takes place.
  • the transverse sealer 10 is further provided with a pair of cramming devices 50, each attached to one of the rotary arms 12 as shown in Fig. 4, for pushing the articles downwards so as to "settle" inside the bag-shaped film S by stroking and pressing the film S from outside without purposely closing it prior to the stripping by the stripping rods 42 on an upper part of the bag being made such that the bag will come to be more tightly packed.
  • Each cramming device 50 comprises a cramming bar 52 made of a coil spring extended in the Y-direction with its ends engaged to protrusions 53 on both ends of a generally U-shaped holder 54.
  • the pair of cramming bars 52 is adapted to push the bag being made both from the front and from the back in the X-directions (or the forward-backward directions), as shown also in Fig. 5, while being elastically deformed.
  • the holder 54 is fastened at one end to a supporting member 56 by screws 55.
  • the supporting member 56 is in turn fastened to one of the rotary arms 12 and is provided with elongated holes 58 for adjusting its position of attachment.
  • the rotary arm 12, to which the supporting member 56 is to be thus attached adjustably, is provided with screw holes (not shown).
  • Tightening means such as bolts or screws 59, are inserted through the elongated position-adjusting holes 58 into these screw holes to adjustingly fasten the supporting member 56, and hence the cramming bar 52, to the rotary arm 20.
  • the position of the cramming device 50 with respect to the rotary arm 20 can be appropriately varied to the extent of these elongated position-adjusting holes 58, according to the desired force with which the loaded bag should be pushed for cramming.
  • Fig. 4 shows an embodiment wherein the elongated position-adjusting holes 58 are provided to the supporting member 56, it is equally practical to provide the rotary arm 20 with elongated holes and the supporting member 56 with screw holes.
  • the mobile outer and inner frames 30 and 34 are for supporting the pair of rotary members 11 such that the distance between the axes of rotation of the rotary arms 12 can be varied.
  • the pairs of outer and inner frames 30 and 34 are respectively connected to each other near the back ends (away from the path of the film S) by a connecting plate 31 or 35, respectively, to form generally U-shaped, or three-sided, frame structures. They are assembled together such that the outer frames 30 can slide in the forward-backward directions (shown by arrows X) on a main body frame 46 (shown in Fig. 1) and that the inner frames 34 can each slide inside one of the outer mobile frames 30 also in the forward-backward directions.
  • a turnbuckle 38 is provided for moving the outer and inner frames 30 and 34 in the forward-backward directions in a mutually coordinated manner such that each of the seal jaws 20 can be moved in a desired D-shaped rotary trajectory including a linear section.
  • this turnbuckle 38 is axially supported by a frame structure 45 affixed to the main body frame 46 and has a right-handed screw part 38a and a left-handed screw part 38b.
  • the right-handed screw part 38a engages through a linear bearing 32 to the connecting plate 31 for the outer frames 30, and the left-handed screw part 38b engages through another linear bearing 36 to the other connecting plate 35 for the inner frames 34 such that the outer and inner frames 30 and 34 can be moved in mutually opposite directions to cause the pair of rotary members 11 to move towards or away from each other by turning the turnbuckle 38 selectively in one direction or the other.
  • the linear bearings 32 and 36 may be of a known kind having many balls which engage with the screw parts 38a and 38b so as to add torque to an arm-shifting motor 40, or to turn the turnbuckle 38 when a force is applied to the frames 30 and 34 in the forward-backward direction by the reaction to the sealing pressure.
  • the arm-shifting motor 40 may be an AC servo motor capable of freely switching between torque-control and speed-controlled modes of operation, connected to the turnbuckle 38 through a timing belt 39.
  • torque-control mode of operation the torque of the motor 40 is kept at a specified level independent of its speed but this specified level can be varied suitably.
  • speed-controlled mode of operation its rotational speed can be made constant independent of the torque.
  • the arm-shifting motor 40 is controlled by a control circuit (not shown herein) so as to be able to rotate in either direction in coordination with the arm-rotating servo motor 29 such that the transverse seal jaws 20 will each travel in the specified generally D-shaped trajectory as shown at 81 in Fig. 5.
  • the pair of rotary members 11 are caused to rotate around the shaft supporting member 14 and the power-input shaft 15 through the Schmidt coupling mechanism 25 (or the axis of rotation of rotary arm 12), and this causes the planet gear 21 to rotate both around the sun gear 24 and around itself, allowing the transverse seal jaws 20 to undergo a rotary motion while remaining oriented constantly in the same horizontal, mutually opposite direction towards each other.
  • the mobile outer and inner frames 30 and 34 engaging separately with the right-handed screw part 38a and the left-handed screw part 38b of the turnbuckle 38 repeat their reciprocating linear motions away from and towards each other, in accordance with the rotations of the arm-shifting motor 40 in the positive and negative directions in synchronism with the rotation of the rotary members 11 such that the transverse seal jaws 20 supported thereby undergo rotary motions on the specified generally D-shaped trajectories 81 as shown in Fig. 5.
  • the stripping rods 42 which protrude towards each other from the frontal sealing surfaces M of the pair of seal jaws 20, come into contact with the film S and substantially with each other, sandwiching it between their transversely extended stripping parts 42b and beginning the stripping operation, as explained in detail in aforementioned US Patent-5,347,795 issued September 20, 1994, to strip down the articles W inside the bag, thereby preventing pieces of the articles W from remaining at the sealing area over which the film S is to be sealed between the seal jaws 20.
  • the seal jaws 20 are brought together, as shown in Fig.
  • each stripping rod 42 is disposed much more closely to the sealing surface M of the corresponding seal jaw 20 than the cramming bar 52.
  • Fig. 7 shows another cramming device 70 embodying this invention, which may be used instead of the cramming device 50 described above, having a cramming bar 72 made of a resin or metallic material, which may not be elastically deformable, and extending in the transverse direction (Y-direction).
  • a cramming bar 72 made of a resin or metallic material, which may not be elastically deformable, and extending in the transverse direction (Y-direction).
  • One end of the cramming bar 72 is attached to one of the pair of the rotary arms 12 through a holder 74.
  • the end of the cramming bar 72 is firmly attached to the holder 74, but the holder 74 is attached to the rotary arm 12 so as to be movable in a selected direction indicated by arrow Z in Fig. 7, perpendicular to the Y-direction.
  • a pair of elongated holder supporting members 76 is provided, each rotatably attached to the rotary arm 12 and to the holder 74, and connected so as to remain parallel to each other.
  • the direction indicated by arrow 2 is determined by the relative positions of the axes of rotation of the supporting members 76 with respect to the rotary arm 12.
  • One of the supporting members 76 is provided with a biasing spring 78 such that the cramming bar 72 normally protrudes towards the film S when the rotary members 11 are at the start-cramming position.
  • the cramming bar 72 itself does not elastically flex but, since its holder 74 can be displaced easily by elastically compressing the spring 78, a cramming operation can be effected equally satisfactorily, without breaking the articles W being packed or damaging the film S.
  • the disclosure is intended to be interpreted broadly.
  • the cramming devices according to this invention unlike means for stripping, is primarily intended to cause the articles to settle. For this reason, they are not intended for closing the bag while stroking and pushing the film from outside.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (14)

  1. Scelleuse transversale (10) pour machine à faire des sacs d'emballage, ladite machine à faire des sacs d'emballage ayant un formeur (2) pour donner une forme tubulaire à une bande allongée (S) de matière de confection de sacs, dans laquelle, après que des articles (W) à emballer ont été introduits dans ladite matière de confection de sacs mise sous une forme tubulaire pendant le transport de ladite matière de confection de sacs sur un trajet donné, la scelleuse scelle transversalement audit trajet ladite matière de confection de sacs, ladite scelleuse transversale comprenant :
    une paire de moyens de scellage transversal (20), disposés en aval dudit formeur par rapport audit trajet et de part et d'autre dudit trajet, pour sceller thermiquement ladite matière de confection de sacs dans une direction transversale par rapport audit trajet ;
    une paire de tiges de séparation (42), disposées en aval dudit formeur par rapport audit trajet et de part et d'autre dudit trajet ;
    un moyen de transmission d'énergie (P) servant à transmettre de l'énergie pour amener ladite paire de moyens de scellage transversal à subir des mouvements de rotation dans des sens mutuellement opposés, ledit moyen de transmission d'énergie comportant un moyen de formation de trajectoire (H) pour amener chacun desdits moyens de scellage transversal à suivre une trajectoire donnée et pour amener lesdites tiges de séparation à prendre entre elles et de ce fait à sensiblement fermer entre elles ladite matière de confection de sacs juste avant que lesdites surfaces de scellage ne commencent à sceller transversalement ladite matière de confection de sacs et pour séparer ladite matière de confection de sacs en déplaçant ladite paire de tiges de séparation sur ledit trajet tout en maintenant ladite matière de confection de sacs sensiblement fermée entre elles, caractérisée par
    des dispositifs de bourrage (50) couplés audit moyen de transmission d'énergie pour subir un mouvement rotatif de révolution différent tout autour d'une autre trajectoire donnée en boucle fermée en coordination avec ledit mouvement de rotation desdits moyens de scellage transversal pour solliciter et comprimer ladite matière de confection de sacs des deux côtés de celle-ci sans sensiblement fermer ladite matière de confection de sacs mise sous une forme tubulaire, afin de réduire de la sorte les espaces vides entre lesdits articles présents à l'intérieur de ladite matière de confection de sacs mise sous une forme tubulaire.
  2. Scelleuse transversale selon la revendication 1, dans laquelle ledit moyen de transmission d'énergie (P) comporte en outre des organes rotatifs couplés auxdits moyens de formation de trajectoire pour faire tourner lesdits moyens de scellage transversal, lesdits dispositifs de bourrage étant supportés par lesdits organes rotatifs.
  3. Scelleuse selon la revendication 2, dans laquelle les organes rotatifs (12) tournent autour d'un axe, les dispositifs de bourrage (13) étant placés du côté opposé de l'axe par rapport aux moyens de scellage.
  4. Scelleuse transversale selon la revendication 2 ou la revendication 3, dans laquelle lesdits dispositifs de bourrage (50) comportent des moyens de fixation réglables (54, 58) pour fixer de manière réglable lesdits dispositifs de bourrage chacun à l'un, correspondant, desdits organes rotatifs.
  5. Scelleuse transversale selon la revendication 4, dans laquelle chaque moyen de fixation réglable comporte au moins un trou allongé (58) ménagé à travers un dispositif de bourrage ou ledit organe rotatif, et un/des moyens de fixation (54) à faire passer dans ledit/lesdits trous allongés pour ainsi fixer ledit dispositif de bourrage audit organe rotatif.
  6. Scelleuse transversale selon l'une quelconque des revendications précédentes, dans laquelle lesdits dispositifs de bourrage (50) comportent des barres (52) à déformabilité élastique conçues pour pousser des deux côtés ladite matière de confection de sacs sur ledit trajet tout en subissant une déformation élastique dans lesdites directions vers l'avant-vers l'arrière.
  7. Scelleuse selon la revendication 6, dans laquelle les barres comportent des ressorts hélicoïdaux (52).
  8. Scelleuse transversale selon l'une quelque des revendications précédentes, dans laquelle lesdits moyens de scellage transversal ont des surfaces de scellage, en regard l'une de l'autre, et la paire de tiges de séparation (42) font normalement saillie l'une vers l'autre au voisinage immédiat desdites surfaces de scellage.
  9. Scelleuse transversale selon la revendication 8, dans laquelle lesdites tiges de séparation séparent ladite matière de confection de sacs après que lesdits dispositifs de bourrage ont sollicité et comprimé ladite matière de confection de sacs.
  10. Scelleuse transversale selon la revendication 6, dans laquelle lesdits moyens de scellage transversal ont des surfaces de scellage, en regard l'une de l'autre, et une paire de tiges de séparation faisant normalement saillie vers la surface de scellage correspondante, lesdits moyens de formation de trajectoire servant à amener lesdites tiges de séparation à prendre entre elles et de ce fait à sensiblement fermer entre elles ladite matière de confection de sacs juste avant que lesdites surfaces de scellage ne commencent à sceller transversalement ladite matière de confection de sacs et pour séparer ladite matière de confection de sacs en déplaçant ladite paire de tiges de séparation sur ledit trajet tout en maintenant ladite matière de confection de sacs sensiblement fermée entre elles, lesdites surfaces de scellage étant situées sensiblement plus près desdites tiges de séparation que desdites barres déformables desdits dispositifs de bourrage.
  11. Scelleuse transversale selon l'une quelconque des revendications précédentes, dans laquelle lesdits dispositifs de bourrage (50) suivent chacun entièrement une trajectoire en forme de D tronqué.
  12. Scelleuse transversale selon au moins la revendication 2, dans laquelle lesdits organes rotatifs et lesdits dispositifs de bourrage sont tous aptes à tourner tout autour d'axes de rotation qui se rapprochent et s'éloignent les uns des autres.
  13. Scelleuse transversale selon l'une quelconque des revendications précédentes, dans laquelle lesdits moyens de scellage transversal se déplacent sur une trajectoire qui comporte une portion linéaire sur ledit trajet.
  14. Machine à faire des sacs d'emballage, comprenant :
    un moyen de transport de bande pour amener une bande allongée de matière de confection de sacs à être transportée sur un trajet donné ;
    un formeur disposé sur ledit trajet pour donner une forme tubulaire à ladite matière de confection de sacs ;
    une scelleuse longitudinale pour sceller longitudinalement des bords latéraux à chevauchement mutuel de ladite matière de confection de sacs mise sous une forme tubulaire ;
    un moyen pour verser des articles à emballer dans ladite matière de confection de sacs mise sous une forme tubulaire ; et
    une scelleuse transversale selon l'une quelconque des revendications précédentes pour sceller ladite matière de confection de sacs mise sous une forme tubulaire transversalement par rapport à la direction dudit trajet pendant le transport de ladite matière de confection de sacs sur ledit trajet donné par ledit moyen de transport de bande.
EP19970303687 1996-06-04 1997-06-02 Dispositif de scellement transversal pour une machine d'emballage Expired - Lifetime EP0811558B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19970303687 EP0811558B1 (fr) 1996-06-04 1997-06-02 Dispositif de scellement transversal pour une machine d'emballage

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US65795896A 1996-06-04 1996-06-04
US657958 1996-06-04
EP97302185 1997-03-27
EP97302185A EP0811557A3 (fr) 1996-06-04 1997-03-27 Dispositif de scellement transversal pour une machine d'emballage
EP19970303687 EP0811558B1 (fr) 1996-06-04 1997-06-02 Dispositif de scellement transversal pour une machine d'emballage

Publications (3)

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EP0811558A2 EP0811558A2 (fr) 1997-12-10
EP0811558A3 EP0811558A3 (fr) 1998-12-30
EP0811558B1 true EP0811558B1 (fr) 2003-11-05

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732033A1 (de) * 1987-09-23 1989-04-13 Rovema Gmbh Siegelvorrichtung
DE3837709A1 (de) * 1988-11-07 1990-05-10 Rovema Gmbh Schlauchbeutelmaschine
US5279098A (en) * 1990-07-31 1994-01-18 Ishida Scales Mfg. Co., Ltd. Apparatus for and method of transverse sealing for a form-fill-seal packaging machine

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EP0811558A3 (fr) 1998-12-30
EP0811558A2 (fr) 1997-12-10

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