FR2638419A1 - Forming/filling/sealing machine for manufacturing closable bags, and associated manufacturing method - Google Patents
Forming/filling/sealing machine for manufacturing closable bags, and associated manufacturing method Download PDFInfo
- Publication number
- FR2638419A1 FR2638419A1 FR8814147A FR8814147A FR2638419A1 FR 2638419 A1 FR2638419 A1 FR 2638419A1 FR 8814147 A FR8814147 A FR 8814147A FR 8814147 A FR8814147 A FR 8814147A FR 2638419 A1 FR2638419 A1 FR 2638419A1
- Authority
- FR
- France
- Prior art keywords
- sheet material
- bar
- bag
- bags
- closure strips
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/344—Stretching or tensioning the joint area during joining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/849—Packaging machines
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- 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
- B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
-
- 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
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
- B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
-
- 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
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
-
- 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
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
- B65B9/2035—Tube guiding means
-
- 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
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
- B65B9/2042—Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices
-
- 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
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
- B65B9/213—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4329—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms the joint lines being transversal but non-orthogonal with respect to the axis of said tubular articles, i.e. being oblique
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
Abstract
Description
La présente invention concerne des perfectionnements à une machine de formage/remplissage/ scellement d'emballage dans laquelle une feuille de matière plastique pour fabrication de sacs, comportant des bandes de fermeture séparables et refermables, est conditionnée sous la forme de parties de sac qui sont fixées et scellées séparément et qui contiennent un produit de remplissage. The present invention relates to improvements to a packaging forming / filling / sealing machine in which a plastic sheet for bag making, having separable and reclosable closure strips, is packaged in the form of bag parts which are attached and sealed separately and contain a filler.
On se référera aubrevet américain4 355494 pour l'art antérieur et les détails d'une machine de formage/remplissage/scellement pour sacs à bandes de fermeture refermables à laquelle sont apportés les perfectionnements faisant l'objet de l'invention. Reference is made to US Pat. No. 4,355,494 for the prior art and the details of a reclosable closure bag forming / filling / sealing machine to which the improvements subject of the invention are made.
La présente invention sert à perfectionner la production de sacs refermables contenant un produit grâce à la réalisation d'une machine de formage/ remplissage/scellement qui soit plus fiable et plus efficace pour mettre en oeuvre une feuille de matière plastique pour fabrication de sacs comportant des bandes de fermeture refermables. D'autres particularités et avantages résultant de l'invention seront reconnus par les spécialistes du domaine de l'emballage en sacs refermables et des machines connues de formage/ remplissage/scellement de matières de fabrication de sacs. The present invention serves to improve the production of reclosable bags containing a product through the realization of a forming / filling / sealing machine which is more reliable and more effective to implement a plastic sheet for manufacturing bags comprising resealable closure strips. Other features and advantages resulting from the invention will be recognized by specialists in the field of packaging in resealable bags and known machines for forming / filling / sealing of bag manufacturing materials.
Une matière en feuille ou film pour sacs, avec des profils de fermeture progressive ("zipper profiles" pour les anglo-saxons) fixés à des distances égales du bord de film dans la direction d'avancement, est dévidée d'une bobine jusqu'à une machine de formage/remplissage/scellement. La partie dévidée est agencée de façon à distribuer un film à profil ouvert ( ou éventuellement un film à profil fermé ) pour une mise en oeuvre dans la machine. Des rouleaux de guidage supportent le film jusqu'à un poste de dérivation à 900. A partir de celui-ci, le film pénètre dans un épaulement de formage qui centre et enroule le film autour d'un tube d'avancement vertical. A sheet material or film for bags, with zipper profiles ("zipper profiles" for the Anglo-Saxons) fixed at equal distances from the film edge in the direction of travel, is unwound from a reel until to a forming / filling / sealing machine. The unwound portion is arranged to distribute an open-profile film (or possibly a closed-profile film) for implementation in the machine. Guide rollers support the film to a shunt station at 900. From there, the film penetrates a forming shoulder which centers and wraps the film around a vertical advancement tube.
Des attaches de guidage du tube d'avancement maintiennent la rectitude du film pendant qu'il est avancé par un dispositif de scellement, mobile verticalement et comportant des mâchoires de scellement. Les mâchoires de scellement produisent un scellement inférieur et un scellement supérieur sur des sacs consécutifs. Le profil de fermeture ouvert est fermé pendant la période d'indeXage du cycle, tandis qu'une période d'arrêt permet un scellement latéral et un soudage ultrasonique par points des parties de contact du profil. Le sac rempli et formé est séparé en bas de la course verticale du dispositif de scellement mobile au moyen d'une lame de découpage qui est synchronisée pour maintenir une longueur précise des sacs.Advancement tube guide clips maintain the straightness of the film as it is advanced by a vertically movable sealing device with sealing jaws. The sealing jaws produce a lower seal and a top seal on consecutive bags. The open closure profile is closed during the cycle indeXage period, while a shutdown period permits lateral sealing and ultrasonic spot welding of the profile contact portions. The filled and shaped bag is separated at the bottom of the vertical stroke of the movable sealing device by means of a cutting blade which is synchronized to maintain a precise length of the bags.
Un gaz inerte est insufflé dans la partie à produit et la partie de tête séparés par la fermeture progressive à intervalles synchronisis, ou bien selon une vitesse constante pendant le processus. An inert gas is blown into the product portion and the head portion separated by the progressive closure at synchronous intervals, or at a constant speed during the process.
D'autres caractéristiques et avantages de l'invention seront mis en évidence dans la suite de la description, donnée à titre d'exemple non limitatif, en référence aux dessins annexés dans lesquels la figure 1 est une vue en élévation partielle montrant la partie d'amenée de feuille à la machine de formage/ remplissage/scellement de la présente invention. Other features and advantages of the invention will be demonstrated in the remainder of the description, given by way of non-limiting example, with reference to the accompanying drawings in which FIG. 1 is a partial elevational view showing the part of FIG. feeding sheet to the forming / filling / sealing machine of the present invention.
La figure 2 est une vue en coupe d'un rouleau de guidage expansible, faite selon les lignes II-II de la
Figure 1.FIG. 2 is a sectional view of an expandable guide roller made along the lines II-II of FIG.
Figure 1.
La figure 3 est une vue en perspective partielle de la partie de guidage, rainurée en spirale, de la barre de déviation.Figure 3 is a partial perspective view of the spiral grooved guide portion of the deflection bar.
La figure 4 est une vue en coupe faite selon les lignes
IV-IV de la figure 3. FIG. 4 is a sectional view taken along the lines
IV-IV of Figure 3.
La figure 5 est une vue en coupe et en élévation latérale de la partie supérieure du tube d'avancement.Figure 5 is a sectional and side elevational view of the upper portion of the feed tube.
La figure 6 est une vue en coupe faite selon les lignes
VI-VI de la figure 5.FIG. 6 is a sectional view taken along the lines
VI-VI of Figure 5.
La figure 7 est une vue en coupe faite selon les lignes
VII-VII de la figure 5.Figure 7 is a sectional view taken along the lines
VII-VII of Figure 5.
La figure 8 est une vue en élévation latérale de la partie inférieure du tube d'avancement et du poste de remplissage et séparation de sac.Figure 8 is a side elevational view of the lower portion of the feed tube and the bag filling and separating station.
La figure 9 est une vue en coupe faite selon les lignes
IX-IX de la figure 8.Figure 9 is a sectional view taken along the lines
IX-IX of Figure 8.
La figure 10 est une vue en coupe faite selon les lignes
X-X de la figure 8.FIG. 10 is a sectional view taken along the lines
XX of Figure 8.
On va maintenant donner une description des réalisations préférées. We will now give a description of the preferred embodiments.
La figure 1 représente une partie d'amenée de feuille 10 pour la machine de formage de sacs de l'invention. De façon analogue à la machine de formage de sacs décrite dans le brevet américain 4355 494, une feuille de matière plastique stratifiée pour fabrication de sacs, pourvue de profils de fermeture progres sive refermables et verrouillables ensemble, est dévidée d'une bobine ( non représentée ) et est transférée sur des rouleaux de guidage rainurés jusqu'à un poste 11 à tube vertical d'avancement comportant un épaulement de profilage 12 à son extrémité supérieure, comme le montre la figure 5.A la différence du système décrit dans le brevet américainprécité, la présente invention est cependant utilisable avec une feuille de matière plastique stratifiée S pour sacs, comportant des profils mâle et femelle P placés au centre et nécessitant des dispositifs de scellement latéral et
inférieur pour former le sac.Fig. 1 shows a sheet feed portion 10 for the bag forming machine of the invention. In a similar manner to the bag forming machine described in US Pat. No. 4,355,494, a sheet of laminated plastic material for bag manufacture, provided with closure profiles that are reclosable and lockable together, is unwound from a reel (not shown). ) and is transferred on grooved guide rollers to a vertical feed tube station 11 having a profiling shoulder 12 at its upper end, as shown in FIG. 5. Unlike the system described in the US Pat. however, the present invention can be used with a laminated plastic sheet S for bags, having male and female P profiles placed in the center and requiring side sealing devices and
lower to form the bag.
La feuille S pour sacs est dévidée de la bobine en passant autour d'un premier ensemble de rouleaux de guidage 13. Au moins un de ces rouleaux de guidage est de préférence réalisé avec une gaine circonférentielle de diamètre variable afin de maintenir une tension correcte dans la feuille dévidée. Comme le montrent les figures 1 et 2, la gaine extérieure d'un rouleau de guidage expansible est un manchon creux comportant des parties incurvées flexibles 14 qui sont disposées concentriquement autour d'un arbre 15 du rouleau au moyen de bagues 16 en forme de coin qui sont coaxiales avec l'arbre. The sheet S for bags is unwound from the spool by passing around a first set of guide rollers 13. At least one of these guide rollers is preferably made with a circumferential sheath of variable diameter in order to maintain a correct tension in the rolled sheet. As shown in FIGS. 1 and 2, the outer sheath of an expandable guide roll is a hollow sleeve having flexible curved portions 14 which are concentrically disposed about a shaft 15 of the roll by means of wedge-shaped rings 16. which are coaxial with the tree.
Les bagues 16 peuvent être disposées de façon réglable sur l'arbre afin d'augmenter le diamètre du rouleau sur les bords de la feuille en vue de compenser une contraction possible de matière dans une zone adjacente à la partie centrale à profil de la feuille de matière
qui peut se produire par suite du processus d'extrusion des bandes de profil lors de la fabrication de la matière en feuille ).The rings 16 may be adjustably disposed on the shaft to increase the diameter of the roll on the edges of the sheet to compensate for a possible contraction of material in an area adjacent to the central portion of the sheet. material
which may occur as a result of the extrusion process of the profile strips during the manufacture of the sheet material).
La feuille pour sacs S, à partir du premier ensemble de rouleaux de guidage 13, passe dans un poste 17 de dérivation à 90 , comportant une barre stationnaire de dérivation 18 orientée approximativement à 45 par rapport à la direction de dhplmement de la feuille vers et à partir d'elle, et sur laquelle la feuille de matière passe. Une barre de dérivation est couramment utilisée dans l'industrie de l'emballage cependant, puisqu'une feuille de matière plastique stratifiée comporte fréquemment des bords libres, et puisque la feuille de matière est pourvue ici de parties profilées relativement épaisses, il pourrait se poser un prlème de guidage ou pistage ("tradking" pour les anglo
Saxons). Pour remédier à cet inco, la barre de dérivation 18 est pouvue d'unepartie spéciale deguidage 19, rainurée en spira- le, pour maintenir et contrôler le guidage. Comme le montrent en détail les figures 3 et 4, les profils P pénètrent dans les rainures en spirale 20 de la partie de guidage 19, et sont guidés par les rainures au cours de la dérivation de la feuille autour de la barre 18. La partie de guidage permet à la feuille de changer efficacement sa direction de mouvement. Un léger réglage angulaire de la barre stationnaire 18 amène la rainure de la partie de guidage 19 dans des positions différentes, si nécessaire, au cas où la position des prof ilsvarierait entredifférentes bobines de feuille.The bag sheet S, from the first set of guide rollers 13, passes into a 90 bypass station 17, having a stationary bypass bar 18 oriented at approximately 45 with respect to the direction of displacement of the sheet towards and from it, and on which the sheet of matter passes. A bypass bar is commonly used in the packaging industry, however, since a laminated plastic sheet frequently has free edges, and since the sheet of material is provided here with relatively thick profiled parts, it could arise a prleme of guiding or tracking ("tradking" for Anglo
Saxons). To remedy this inconvenience, the bypass bar 18 is provided with a special portion 19, grooved spiral, to maintain and control the guidance. As is shown in detail in FIGS. 3 and 4, the P-profiles penetrate the spiral grooves 20 of the guide portion 19, and are guided by the grooves during the derivation of the sheet around the bar 18. The guide allows the sheet to effectively change its direction of movement. A slight angular adjustment of the stationary bar 18 brings the groove of the guide portion 19 into different positions, if necessary, in case the position of the profiles varies between different reels of sheet.
La feuille ainsi dérivée est guidée sur d'autres rouleaux de guidage 13, et revient sur la partie de dérivation 17 de façon à passer autour de lépaulexrent de profilage 12. En référence à la figure 5, l'épaulementde profilage 12 est agencé comme décrit dans le brevet américain 4 355 494. Un dispositif 21 à plaque de guidage chargée par ressort est monté sur la surface extérieure avant de l'épaulement 12 de façon à guider une ou les deux bandes P du profil de fermeture dans une rainure. La sollicitation élastique du dispositif à plaque de guidage 21 est de préférence réglable à l'aide de vis 21A afin de commander et de maintenir la tension dans la feuille de matière S.La feuille de matière passe autour de l'épaulement de profilage, puis elle se déplace vers le bas à l'intérieur de la partie creuse de l'épaulement, sous la forme d'un produit intermédiaire de profil tubulaire, autour d'un tube d'avancement 22 disposé verticalement. The sheet thus derived is guided on other guide rollers 13, and returns to the branch portion 17 so as to pass around the profiling shoulder 12. Referring to Figure 5, the profiling shoulder 12 is arranged as described in US Patent 4,355,494. A spring-loaded guide plate device 21 is mounted on the front outer surface of the shoulder 12 to guide one or both of the closure profile strips P into a groove. The resilient biasing of the guide plate device 21 is preferably adjustable by means of screws 21A to control and maintain the tension in the sheet of material S.The sheet of material passes around the profiling shoulder, then it moves downwardly inside the hollow portion of the shoulder, in the form of an intermediate product of tubular profile, around a feed tube 22 arranged vertically.
La partie 22A du tube d'avance 22 a, à l'intérieur du creux de l'épaulement 12 et légèrement en dessous de l'épaulement, une forme cylindrique, comme le montre la figure 6. La partie inférieure 22B du tube d'avancement 22 change de configuration, pour présenter un profil relativement polygonal, comme le montre la figure 7. The portion 22A of the feed tube 22 has, inside the recess of the shoulder 12 and slightly below the shoulder, a cylindrical shape, as shown in Figure 6. The lower part 22B of the tube progress 22 changes configuration, to present a relatively polygonal profile, as shown in Figure 7.
I1 est prévu le long dutube d'avancement 22, parallèlement àcelui-ci, une partie de fermeture deprofil 23 qui est formée par un guide rainuré stationnaire, qui guide graduellement les profils complémentaires mâle et femelle jusque dans unecondition de contact mutuel lorsqu'fus atteignent la zone X, comme le montre la figure 5. Un gaz inerte, comme du gaz carbonique ou de l'azote, est de préférence amené sous pression dans la zone X à partir d'un tube de soufflage 24,due de façon à pénétrer dans une partie de tête du sac qui est adjacente aux profils. Ce gaz inerte est également insufflé dans le tube d'avancement 22 pour évacuer l'intérieur du sac en train d'être formé qui correspond à la partie de réception du produit.Le gaz inerte peut être insufflé dans les parties du sac à intervalles synchronisés, ou bien selon une vitesse constante, pendant le processus. There is provided along the feed pipe 22, parallel thereto, an airfoil closure portion 23 which is formed by a stationary grooved guide, which gradually guides the complementary male and female profiles into a mutual contact condition when it reaches the zone X, as shown in FIG. 5. An inert gas, such as carbon dioxide or nitrogen, is preferably brought under pressure into the zone X from a blowing tube 24, so as to penetrate in a head portion of the bag that is adjacent to the profiles. This inert gas is also blown into the feed tube 22 to evacuate the inside of the bag being formed which corresponds to the receiving portion of the product. The inert gas can be blown into the bag portions at synchronized intervals. or at a constant speed during the process.
De l'autre côté du tube d'avancement 22, deux plaques de scellement à chaud 25 sont montées parallèlement au tube. Les bords libres opposés de la feuille de matière S sont rapprochés l'un de l'autre dans l'espace existant entre les plaques de scellement. On the other side of the feed tube 22, two hot sealing plates 25 are mounted parallel to the tube. The opposite free edges of the sheet of material S are brought closer to each other in the space between the sealing plates.
Pendant une période d'arrêt du mouvement de la feuille, un scellement latéral pour le sac en train d'être formé est réalisé par les plaques 25. Egalement, pendant cette période d'arrêt, un soudage ultrasonique par points des bandes de profils maintenant engagés est réalisé à l'aide d'une soudeuse ultrasonique par points 26, schématisée sur la figure 5. Les points de soudure sont formés aux extrémités opposées des bandes de profils refermables pour le sac en train d'être formé de façon à obtenir des sacs étanches aux fuites, qui sont ainsi utilisables pour des produits périssables. Du fait que les profils sont accrochés, le soudage par points les maintient dans la relation d'accrochage mutuel aux extrémités, qui constituent les côtés de chacune des parties supérieures de sac.Comme cela est évident, du fait que les bandes sont maintenues accrochées à leurs extrémités, il sera facile pour l'utilisateur de pousser les profils l'un contre l'autre sur leur longueur pour fermer le sac.During a period of stopping the movement of the sheet, a lateral seal for the bag being formed is produced by the plates 25. Also, during this period of stopping, an ultrasonic spot welding of the strips of profiles now engaged is performed using a spot welder 26, shown schematically in Figure 5. The weld points are formed at opposite ends of the reclosable profile strips for the bag being formed to obtain leakproof bags, which are thus usable for perishable products. Because the profiles are hooked, the spot welding keeps them in the interlocking relationship at the ends, which are the sides of each of the upper parts of the bag. As is obvious, because the strips are held hooked to their ends, it will be easy for the user to push the profiles against each other along their length to close the bag.
En référence à la figure 8, et en aval des plaques de scellement 25 et de la soudeuse par points 26, dans la direction de déplacement de la feuille à partir du tube d'avancement, le produit intermédiaire de forme tubulaire passe sur des doigts de guidage 27 servant à maintenir la forme de la feuillequiesttubulaire dans l'ensemble. Un dispositif de scellement 28, mobile verticalement, est disposé en dessous des doigts de guindage. Comme dans la machine décrite dans le brevet américain 4 355 494, le dispositif de scellement mobile 28 comporte deux barres transversales 29, 30 de scellement à chaud qui sont mobiles d'une manière appropriée pour maintenir la feuille de forme tubulaire dans son déplacement vertical, de telle sorte qu'un scellement transversal soit réalisé dans la matière du sac.Les barres 29 et 30 libèrent ensuite la feuille, et le dispositif de scellement 28 revient vers le haut pour commencer une course de descente ultérieure. La période d'arrêt du mouvement de la feuille S dans la machine de formage/remplissage/scellement se produit pendant ce mouvement de retour vers le haut du dispositif de scellement. Un produit de remplissage est amené par l'intermédiaire du tube d'avancement dans le sac en train d'être formé, après que le scellement transversal a été réalisé et pendant la période d'arrêt. Ce scellement transversal formé sur le sac tubulaire sert à obturer les extrémités inférieures et supérieures ouvertes de sacs adjacents en train d'être formés.Le dispositif de scellement 28 comporte une lame de découpage 31 qui se déplace dans l'intervalle ménagé entre les barres 29 et 30 à la fin de la course de descente du dispositif de scellement 28 > et après que le scellement transversal a été réalisé afin de séparer un sac inférieur fini d'un sac supérieur adjacent à remplir. Referring to Fig. 8, and downstream of the sealing plates 25 and the spot welder 26, in the direction of travel of the sheet from the feed tube, the tubular intermediate product passes over guide 27 for maintaining the shape of the tubular sheet as a whole. A sealing device 28, vertically movable, is disposed below the gripping fingers. As in the machine described in US Pat. No. 4,355,494, the movable sealing device 28 has two heat sealing cross bars 29, 30 which are suitably movable to maintain the tubular shaped sheet in its vertical movement. such that a transverse seal is made in the material of the bag. The bars 29 and 30 then release the sheet, and the sealing device 28 returns upwards to start a subsequent downstroke. The period of stopping the movement of the sheet S in the forming / filling / sealing machine occurs during this upward movement of the sealing device. A filler is fed through the feed tube into the bag being formed, after the cross seal has been made and during the shutdown period. This transverse seal formed on the tubular bag serves to seal the open lower and upper ends of adjacent bags being formed. The sealing device 28 has a cutting blade 31 which moves in the gap between the bars 29. and at the end of the descent stroke of the sealer 28> and after the cross seal has been made to separate a finished lower bag from an adjacent upper bag to be filled.
A la différence de la machine décrite dans le brevet américain4 355494, il est prévu sur le haut des barres de scellement 29 et 30 des pinces opposées 32, sollicitées par ressorts, pour agir sur la feuille tubulaire, commelemontreles figures 8et 10, afin de répartir plus uniformément la force de tirage produisant le dévidage de la feuille de matière. Cela est nécessaire sans quoi la charge de tirage exerce sur les parties à profils serait alors différente de celle exercée sur les parties restantes, moins épaisses, de la feuille de matière. Egalement, comme le montrent les figures 9 et 10, des paires de biellettes pivotantes d'écartement 33 et 34, sollicitées par ressorts, sont respectivement montées directement sur le haut de chacune des barres de scellement 29 et 30. Unlike the machine described in US Pat. No. 4,355,494, there are provided on the top of the sealing bars 29 and 30 opposed tongs 32, spring loaded, to act on the tubular sheet, as shown in FIGS. 8 and 10, in order to distribute more uniformly the pulling force producing the unwinding of the sheet of material. This is necessary otherwise the draw load on the profile parts would then be different from that exerted on the remaining parts, less thick, of the sheet of material. Also, as shown in FIGS. 9 and 10, pairs of spring-biased pivotal rods 33 and 34 are respectively mounted directly on top of each of the sealing bars 29 and 30.
Chaque biellette d'écartement comporte une partie 35 en forme de bras qui est montée sur un pivot 38, et qui est poussée par un ressort 37 de façon à entrer en contact avec la feuille de matière s'étendant dans l'intervalle existant entre les barres de scellement 29 et 30. Chaque biellette d'écartement coopère avec une biellette d'écartement disposée sur l'autre barre de scellement,sse içon à établir le contact avec la feuille de matière entre leurs bras. Each spacer rod has an arm-shaped portion 35 which is mounted on a pivot 38, and which is urged by a spring 37 so as to contact the sheet of material extending in the gap between them. sealing bars 29 and 30. Each spacer rod cooperates with a spacer rod disposed on the other sealing bar, so as to make contact with the sheet of material between their arms.
Les bras des biellettes d'écartement opposées, prévues sur les différentes barres de scellement 29 et 30, agissent mutuellement en contact avec la feuille de matière, et allongent le sac en train d'être formé transversalement, comme le montre la figure 10, avant que le scellement transversal soit réalisé. L'action exercée par les biellettes d'écartement 33 et 34 permet de réaliser en toute sécurité un joint soudé acceptable et exempt d'ondulations sur les bords du sac.The arms of the opposing spacer links, provided on the various sealing bars 29 and 30, interact with the sheet of material, and lengthen the bag being formed transversely, as shown in FIG. that the transverse seal is made. The action exerted by the spacing rods 33 and 34 makes it possible to safely produce an acceptable weld-free weld at the edges of the bag.
La présente invention perfectionne les machines connues de formage vertical/remplissage/ scellement d'emballage afin de permettre un fonctionnement efficace, fiable et continu avec utilisation d'une feuille de matière pour sacs comportant des profils de fermeture refermables, notamment une feuille de matière stratifiée. The present invention improves the known machines for vertical forming / filling / sealing of packaging to enable efficient, reliable and continuous operation using a sheet of bag material having reclosable closure profiles, especially a sheet of laminated material .
Bien entendu l'invention n'est pas limitée aux exemples de réalisation ci-dessus décrits et représentés, à partir desquels on pourra prévoir d'autres modes et d'autres formes de réalisation, sans pour cela sortir du cadre de l'invention. Naturally, the invention is not limited to the embodiments described above and shown, from which we can provide other modes and other embodiments, without departing from the scope of the invention.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR8814147A FR2638419B1 (en) | 1988-10-28 | 1988-10-28 | FORMING / FILLING / SEALING MACHINE FOR MANUFACTURING CLOSABLE BAGS, AND MANUFACTURING METHOD THEREOF |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8814147A FR2638419B1 (en) | 1988-10-28 | 1988-10-28 | FORMING / FILLING / SEALING MACHINE FOR MANUFACTURING CLOSABLE BAGS, AND MANUFACTURING METHOD THEREOF |
Publications (2)
Publication Number | Publication Date |
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FR2638419A1 true FR2638419A1 (en) | 1990-05-04 |
FR2638419B1 FR2638419B1 (en) | 1992-01-03 |
Family
ID=9371402
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Application Number | Title | Priority Date | Filing Date |
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FR8814147A Expired - Lifetime FR2638419B1 (en) | 1988-10-28 | 1988-10-28 | FORMING / FILLING / SEALING MACHINE FOR MANUFACTURING CLOSABLE BAGS, AND MANUFACTURING METHOD THEREOF |
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FR (1) | FR2638419B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2716160A1 (en) * | 1994-02-14 | 1995-08-18 | Flexico France Sarl | Machine for forming filling and closing packages made of flexible film |
EP0775633A1 (en) | 1995-11-27 | 1997-05-28 | Flexico-France | Unfolding device for machines for the automatic making, filling and closing of packages in flexible film |
EP1339610A1 (en) * | 2000-07-31 | 2003-09-03 | Cryovac Australia Pty Ltd | Sealing assembly |
EP0912327B1 (en) * | 1997-01-29 | 2004-03-31 | Flexico-France | Method and device for making packaging bags and resulting bags |
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FR1323348A (en) * | 1962-02-19 | 1963-04-05 | Flexico France Sarl | Improvements to articles, such as bags or sachets, provided with flexible closures, and to elements, methods and devices for making such articles |
US3200560A (en) * | 1960-09-29 | 1965-08-17 | Ralph S Randall | Machine for vacuum sealing bags |
DE2145638A1 (en) * | 1971-09-13 | 1973-03-22 | Franco Toss | HOSE BAG MACHINE |
FR2429663A1 (en) * | 1978-06-28 | 1980-01-25 | Flexico France Sarl | METHOD AND APPARATUS FOR MAKING RECLOSABLE BAGS |
EP0023817A1 (en) * | 1979-08-06 | 1981-02-11 | Roeder Industrial Holdings Limited | Form-fill-seal apparatus and method of making reclosable bags |
US4534159A (en) * | 1982-11-12 | 1985-08-13 | General Packaging Equipment Company | Apparatus for forming, filling and sealing bags with fluid contents |
US4589145A (en) * | 1983-10-31 | 1986-05-13 | Signode Corporation | Packaging material and package |
EP0319995A2 (en) * | 1987-12-10 | 1989-06-14 | Zip-Pak Incorporated | Guide for a foil having a zip-fastener and a tensioning apparatus for making packages |
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Publication number | Priority date | Publication date | Assignee | Title |
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US3200560A (en) * | 1960-09-29 | 1965-08-17 | Ralph S Randall | Machine for vacuum sealing bags |
FR1323348A (en) * | 1962-02-19 | 1963-04-05 | Flexico France Sarl | Improvements to articles, such as bags or sachets, provided with flexible closures, and to elements, methods and devices for making such articles |
DE2145638A1 (en) * | 1971-09-13 | 1973-03-22 | Franco Toss | HOSE BAG MACHINE |
FR2429663A1 (en) * | 1978-06-28 | 1980-01-25 | Flexico France Sarl | METHOD AND APPARATUS FOR MAKING RECLOSABLE BAGS |
EP0023817A1 (en) * | 1979-08-06 | 1981-02-11 | Roeder Industrial Holdings Limited | Form-fill-seal apparatus and method of making reclosable bags |
US4534159A (en) * | 1982-11-12 | 1985-08-13 | General Packaging Equipment Company | Apparatus for forming, filling and sealing bags with fluid contents |
US4589145A (en) * | 1983-10-31 | 1986-05-13 | Signode Corporation | Packaging material and package |
EP0319995A2 (en) * | 1987-12-10 | 1989-06-14 | Zip-Pak Incorporated | Guide for a foil having a zip-fastener and a tensioning apparatus for making packages |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2716160A1 (en) * | 1994-02-14 | 1995-08-18 | Flexico France Sarl | Machine for forming filling and closing packages made of flexible film |
EP0775633A1 (en) | 1995-11-27 | 1997-05-28 | Flexico-France | Unfolding device for machines for the automatic making, filling and closing of packages in flexible film |
US5857310A (en) * | 1995-11-27 | 1999-01-12 | Flexico-France | Unpleating system for machines for molding, filling, and automatic closing of flexible-film-based wrappings |
EP0912327B1 (en) * | 1997-01-29 | 2004-03-31 | Flexico-France | Method and device for making packaging bags and resulting bags |
EP1339610A1 (en) * | 2000-07-31 | 2003-09-03 | Cryovac Australia Pty Ltd | Sealing assembly |
EP1339610A4 (en) * | 2000-07-31 | 2009-04-01 | Cryovac Australia Pty Ltd | Sealing assembly |
Also Published As
Publication number | Publication date |
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FR2638419B1 (en) | 1992-01-03 |
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