WO2008107495A1 - Système et procédé d'emballage vertical - Google Patents

Système et procédé d'emballage vertical Download PDF

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Publication number
WO2008107495A1
WO2008107495A1 PCT/ES2007/000125 ES2007000125W WO2008107495A1 WO 2008107495 A1 WO2008107495 A1 WO 2008107495A1 ES 2007000125 W ES2007000125 W ES 2007000125W WO 2008107495 A1 WO2008107495 A1 WO 2008107495A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
tube
sealing
transverse
product
Prior art date
Application number
PCT/ES2007/000125
Other languages
English (en)
Spanish (es)
Inventor
Haritz Arrieta Aguirre
Lander DIAZ DE GUEREÑU OLABARRI
Jon Aguirre Arteaga
Francisco Jose Etxaniz Beaskoetxea
Roberto Oses Fisac
Original Assignee
Ulma Packaging Technological Center, S. Coop.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ulma Packaging Technological Center, S. Coop. filed Critical Ulma Packaging Technological Center, S. Coop.
Priority to PCT/ES2007/000125 priority Critical patent/WO2008107495A1/fr
Publication of WO2008107495A1 publication Critical patent/WO2008107495A1/fr

Links

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
    • 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
    • B65B9/2014—Tube advancing means
    • B65B9/2028—Rollers or belts
    • 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
    • B29C66/01—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
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/044—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device
    • B65B31/045—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device of Vertical Form-Fill-Seal [VFFS] machines
    • 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
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
    • 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
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/40—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles
    • B29C53/42—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles using internal forming surfaces, e.g. mandrels
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a sinusoidal wave
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • B65B9/2007—Means for stripping or squeezing filled tubes prior to sealing to remove air or products from sealing area

Definitions

  • the invention encompasses in the field of vertical product packaging systems, for example, of products comprising liquid.
  • machines and installations for vertical bag forming are known for packaging - for example, unit or bulk - of products.
  • it is based on a film that is sealed longitudinally to obtain a tube of film, which is divided into individual packages by means of transverse seals. A cut of the tube can be made in correspondence with the transverse seal, to separate a container from the next.
  • WO-A-03/086869 describes a machine in which a film is passed through a diverter or former, which directs the film on the periphery of a forming tube.
  • Conveyor belts drag the film sheet down, while a sealing head performs a longitudinal seal, thus forming a tube of the film.
  • a sealing and cutting head performs the transverse sealing of the tube, to form the base of the container and in turn cut an already formed lower container, so that it can be separated from the film tube.
  • the top container is filled through a central hole in the forming tube and subsequently the opening is closed. upper of said upper container by means of the sealing and cutting head.
  • Longitudinal and transverse sealing is carried out by applying pressure and heat (for example, using, in the case of transverse seals, cutting jaws with electrical resistors), and the elements can be controlled with pneumatic systems, with cam-based systems and motor, with servomotors, etc.
  • these packaging systems may be useful for packaging many products, for example, for the packaging of bulk products (for example, for the packaging of seeds, nuts, etc.), they can present problems for packaging of liquid products or those comprising liquid, for example, food products that are stored in a liquid such as oil, etc.
  • a problem is due to the fact that the liquid can splash the inner surfaces of the film tube, which makes it difficult or prevents the correct transverse sealing by heat sealing by applying pressure and heat in a conventional manner (for example, by means of resistance jaws with resistances electrical), since, for said sealing systems to work satisfactorily, the film surfaces to be joined should be clean (i.e. free of liquid splashes). Otherwise, the risk of defects in the transverse seal increases.
  • a first aspect of the invention relates to a vertical product packaging machine or system, comprising: a feeding tube (which can be a substantially vertical tube through which the product to be packaged - which can comprise solid and / or liquid elements - moves by gravity); film feeding means (for example, similar to those described in WO-A-03/086869) configured to apply a film on said feeding tube, so that the film surrounds at least a part of said feeding tube and so that the film travels along at least a portion of said feed tube, towards an outlet end of said feed tube (for example, as in WO-A-03/086869); longitudinal sealing means of the film, configured to seal the film longitudinally by means of a longitudinal sealing, to form a tube of film that wraps at least a part of said tube of feeding (for example, in line with that described in WO-A-03/086869); and transverse sealing means of the film, configured to perform a transverse sealing of the film tube in a position posterior to the outlet end of said
  • This transverse seal may constitute the base of a container and / or the "" upper closure "'of a previous container (ie, of a container that received its sealed base in a previous transverse sealing phase, and which has now been filled with the corresponding product and that must be closed in this next phase of transversal sealing).
  • the transverse sealing means of the film comprise ultrasonic sealing means having opposite sealing surfaces configured to come into contact with the film tube to produce the transverse sealing. It has been proven that the use of ultrasonic welding sealing allows to overcome, at least to some extent, the problems caused by splashing of liquid on the inner surface of the film tube. Ultrasonic welding also works well to weld the film through drops and spots of liquid, since the vibrations displace the liquid, moving it away from the sealing area.
  • the invention allows the vertical packaging, by gravity, of liquid and / or oily products, sauces and mixed products (for example, solid products submerged in liquid or accompanied by liquid, such as cheese in oil) with a maximum reliability, despite the possible splashing of liquid on the inside of the film.
  • sauces and mixed products for example, solid products submerged in liquid or accompanied by liquid, such as cheese in oil
  • the problems that the hot surfaces of conventional transverse sealing means can be avoided.
  • This system of the invention based on the use of ultrasonic welding for, at least, transverse sealing, is also economical and, in addition, is not very demanding in terms of the cleaning conditions of the production environment.
  • the longitudinal sealing means of the film and the transverse sealing means of the film are configured such that the longitudinal sealing is at one end of the transverse sealing. In this way, it is achieved that between the sonotrode and the anvil of the ultrasonic welding system, there are never more than two layers of film. Traditionally, as seen in WO-A-
  • the longitudinal sealing means of the film can be configured to perform the longitudinal sealing so that two areas of the same face or surface of the film are joined. For example, when the tube is formed, the "inner" surfaces of two ends or longitudinal edges of the film can be joined, so that a longitudinal weld is established in which the free longitudinal ends or edges of the film are juxtaposed, directed " ' ' out '' 1 of the tube. In this way, a very homogeneous surface is achieved on which the transverse sealing is then performed. That is, the longitudinal sealing means of the film can be configured such that said two areas of the same film surface is joined near respective longitudinal edges of the film, so that a longitudinal weld is created in correspondence with said longitudinal edges.
  • the system can be configured so that in the area of the transverse seal, there is no area with more than two layers of film superimposed.
  • the system may additionally comprise stretching means configured to stretch the film tube in correspondence with said sealing surfaces.
  • These stretching means (which can be pneumatically operated, for example) can comprise at least two tweezers configured to stretch the film tube in opposite directions (for example, substantially horizontal) and / or so that the film tube is substantially flat in a direction parallel to the transverse sealing surfaces.
  • the pliers may comprise at least two pairs of pliers that each comprise a clamp located higher than the sealing surfaces and a clamp located lower than said sealing surfaces (when the feeding tube is arranged vertically, that is, in the usual operating position of this type of system).
  • the described system may additionally comprise a suction subsystem for removing air and, optionally, part of a product from a package (for example, part of a liquid product) before transverse sealing of the container.
  • This suction subsystem may comprise at least one suction tube that can extend through the feed tube and protrude through the outlet end of the feed tube, extending toward a point lower than said outlet end (when the feed tube is arranged vertically, in its usual operating position).
  • the suction subsystem may comprise a shutter subsystem (which may comprise, for example, two activated traders pneumatically) configured to exert pressure on the film tube and "" close it "in a position between the outlet end of the feed tube and a suction end of the suction tube (or tubes), to hinder the entry of air in the container from the outside, during the phase of suction of air through the suction tubes, that is, during the phase of elimination of air from the container prior to the lock thereof by the transverse seal. or the suction tubes) may end up in a position higher than the transverse sealing surfaces, so as not to interfere with the transverse sealing
  • the feeding tube in correspondence with the outlet end of the feeding tube there may be two or more stretching rods configured to deflect the film tube transversely in two opposite directions, to initiate a flattening of the film tube.
  • These rods can be fixed or pneumatically activated, and can be located in correspondence with the suction tubes.
  • a compaction subsystem comprising two opposite plates (which can be pneumatically operated) configured to exert pressure on the film tube at a position lower than the transverse sealing surfaces, when the feed tube is arranged vertically
  • the system can be configured to feed the film and to perform transverse sealing in a synchronized manner with a feeding of products by the feeding tube, so that each product to be packaged is housed in a bag defined by the film tube and with a base defined by a transverse seal of the film tube.
  • the system may be - S -
  • Another aspect of the invention relates to a method of vertical product packaging, comprising the steps of: applying a film on a feeding tube and forming a film tube from said film by means of a longitudinal sealing; Sequentially perform a product feed through the feed tube and a transverse seal of the film tube, to produce packages comprising portions of film tube sealed with the transverse seal and containing the corresponding product.
  • transverse sealing is performed by ultrasound.
  • the longitudinal sealing of the film and the transverse sealing are carried out so that the longitudinal sealing is at one end of the transverse sealing. What has been described regarding the system is also applicable to the method, mutatis mutandis.
  • the method may, for example, comprise the following steps that are carried out after the entry of the product to be filled into a portion of the film tube, through the feed tube, and before a vertical seal is made to close said portion. of the film tube above the product:
  • pressure Prior to air suction, pressure can be applied on the film tube to hinder the entry of air into the part of the film tube portion that contains the product.
  • Figures 1-4.- Show schematic elevational views of the system according to a preferred embodiment of the invention, in four successive operational phases.
  • Figures 5-6 You show two schematic views of the film tube, with longitudinal sealing (figure 5) and longitudinal and transverse sealing (figure 6).
  • Figures 7-10 Samples viewed in perspective of different components or subsystems of the apparatus or system of the invention.
  • Figure 11.- Shows a perspective view of the machine or system of the invention.
  • Figures 12 and 13.- Shows two side elevation views of the machine or system of the invention (one of the views reflects the system rotated 90 ° around a vertical axis with respect to the other view).
  • Figures 1-4 reflect various moments of the operation of a system according to a preferred embodiment of the invention.
  • the system comprises a feeding tube 1 and film feeding means (which can come from a film reel and pass through trainers 2 to be applied on the feeding tube, and then be dragged down , that is, towards the outlet end 11 of the feed tube, by means of a drag system 3 with its corresponding drag belts), for example, in the same way as in WO-A-03/086869.
  • means 4 for longitudinal sealing of the film that can be of any conventional type (for example, based on electrical resistors) and which are configured to seal the film longitudinally by sealing longitudinal 100 (see figures 5 and 6), to form a film tube 102 that wraps at least a part of the feeding tube 1.
  • means 5 of transverse sealing of the film configured to make successive transverse seals 101 (see Figure 6) of the film tube 102 in a position posterior to the outlet end 11 of the feed tube 1, that is, below the outlet end 11.
  • transverse sealing means 5 comprise sealing means by ultrasounds having opposite sealing surfaces 51 and 52, which, as is conventional in ultrasonic sealing systems, may comprise an anvil (corresponding to one of the sealing surfaces 52) and a sonotrode (corresponding to the other sealing surface 51), which, conventionally, can be activated from a generator of an electrical signal with the appropriate frequency (for example, in the order of 15-40 kHz), a converter that converts the electrical signal in a mechanic and a booster.
  • a generator of an electrical signal with the appropriate frequency for example, in the order of 15-40 kHz
  • converter that converts the electrical signal in a mechanic
  • booster for example, in the order of 15-40 kHz
  • the longitudinal sealing means of the film and the transverse sealing means of the film are configured so that the longitudinal sealing is at one end of the transverse sealing.
  • the longitudinal sealing is performed so that two areas of the same surface of the film are joined and so that these two areas are joined near respective longitudinal edges of the film.
  • a longitudinal weld is created in correspondence with the longitudinal edges, and in the transverse seal 101 there is no area with more than two layers of film superimposed, as can be seen in Figures 5 and 6.
  • a reliable cross closure can be achieved by ultrasonic welding.
  • stretching means 6 are provided which are illustrated in more detail in Figure 7 (see also Figures 11 and 13) and comprising two pairs of pliers (61, 62) configured to stretch the film tube in correspondence with the sealing surfaces (51, 52) of the transverse sealing means, in substantially horizontal opposite directions (when the feeding tube is in its vertical operating arrangement ), so that the film tube 102 is substantially flat in a direction parallel to the sealing surfaces.
  • Each pair of pliers comprises a clamp located higher than the sealing surfaces and a clamp located lower than the sealing surfaces.
  • the clamps are pneumatically actuated and configured to grip the film tube and to stretch it in opposite directions, so that the film tube is substantially flat in the area where the transverse seal occurs.
  • the packaging system additionally comprises a suction subsystem for removing air and, optionally, part of a product (for example, a liquid product) from a package before transverse sealing of the package, that is, to produce a vacuum at least partially in the package, something that can serve to improve the preservation of the product.
  • This suction subsystem comprises in this case two suction tubes 71 (see Figures 1-4, 11-13 and, especially, 8) which extends through the feeding tube 1 and protrudes through the outlet end 11 of the tube of feeding. These suction tubes are connected to a suction device (not shown) that can be of any conventional type. It is not considered necessary to describe it here in more detail.
  • a sealing subsystem 73 with two shutters 731 (basically, treadmills with flexible contact surface) (see, for example, Figures 1-4 and 9) which are pneumatically activated and which are pneumatically activated they are configured to exert pressure on the film tube in a position between the outlet end 11 of the feed tube and the suction ends 711 of the suction tubes 71, crushing it to prevent or hinder the entry of air. In this way, the entry of air into the package from the outside is difficult, during the air suction phase through the suction tubes 71 and before the transverse sealing.
  • the suction tubes terminate in a position higher than the sealing surfaces (51, 52) of the transverse sealing means, so that they do not obstruct the transverse ultrasonic sealing.
  • two stretching rods 8 are arranged which serve to deflect the film tube transversely in two opposite directions. This serves to initiate a flattening of the film tube, which facilitates the subsequent actuation of the stretching tongs (61, 62), and / or to facilitate packaging.
  • a compaction subsystem comprising two opposite plates 9 (see, for example, figures 9 and 12), pneumatically operated, and which serve to exert pressure on the film tube below the sealing surfaces (51 , 52) of the transverse sealing means 5.
  • the product can be compacted and / or reorganized before the transverse seal that superiorly closes the container occurs, and reduces, for example, the risk of air pockets remaining inside the package.
  • the system is configured to feed the film and to perform the transverse sealing in a synchronized manner with a product feed by the feeding tube 1, so that each product - or part of the product - to be packaged is it is housed in a bag defined by the film tube and with a base defined by a transverse seal of the film tube. After a product to be packaged has been received on the sealed base, the film is fed and a new transverse seal is made above the product, determining a new sealed base on which the next product to be packaged can be deposited.
  • the system can operate according to the following method or sequence of steps:
  • the film is applied to the tube and fed in a conventional manner, with a longitudinal weld or seal 100 that establishes a film tube 102.
  • the transverse seals 101 are produced by ultrasonic welding, and each package 103 is closed by the longitudinal seal. 100 and by two transverse seals 102, as seen in Figures 5 and 6.
  • this transverse seal serves as the "base" of a new package
  • the product 200 is introduced through the feed tube, as can be seen in Figure 1, in which look at the product 200 deposited in the lower part of the film tube, closed inferiorly by a transverse seal.
  • the traders 731 are in their removed position, just like the compaction plates 9.
  • the compaction plates 9 approach each other and there is a compaction and / or a reorganization / reconfiguration of the product 200.
  • the suction of air (and, optionally, a part of the product) is activated through the suction tubes 71. Since the footsteps 731 prevent or hinder the entry of air from above, a vacuum occurs (at least partial) inside the film tube under said treadmills (this phase can be seen in figure 3). Now you can activate the stretching clamps (61, 62), which grip respective parts of the tube (already crushed by the pressure of the outside air against the internal partial vacuum) and throw them out, in opposite directions, to avoid wrinkles that could make cross sealing difficult. Subsequently, the sealing surfaces (51, 52) of the anvil and sonotrode approach each other and come into contact with the film tube, to produce the transverse seal in the corresponding area.
  • Properly sealed containers can then be separated from the rest of the film tube in a conventional manner.
  • the invention is not limited to the specific embodiments that have been described but also covers, for example, the variants that can be made by the average person skilled in the art (for example, in terms of the choice of materials, dimensions , components, configuration, etc.), within what follows from the claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

L'invention concerne un système et un procédé d'emballage vertical de produits, qui consiste en un tube d'alimentation (1) et des moyens de fermeture longitudinale et transversale. Les moyens (5) de fermeture transversale du film comprennent des moyens de fermeture par ultrasons qui présentent des surfaces de fermeture (51, 52) opposées configurées de manière à entrer en contact avec le tube de film (102) pour entraîner la fermeture transversale, et les moyens de fermeture longitudinale et transversale du film étant conçus de manière que la fermeture longitudinale reste à une extrémité de la fermeture transversale.
PCT/ES2007/000125 2007-03-08 2007-03-08 Système et procédé d'emballage vertical WO2008107495A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2007/000125 WO2008107495A1 (fr) 2007-03-08 2007-03-08 Système et procédé d'emballage vertical

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2007/000125 WO2008107495A1 (fr) 2007-03-08 2007-03-08 Système et procédé d'emballage vertical

Publications (1)

Publication Number Publication Date
WO2008107495A1 true WO2008107495A1 (fr) 2008-09-12

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Application Number Title Priority Date Filing Date
PCT/ES2007/000125 WO2008107495A1 (fr) 2007-03-08 2007-03-08 Système et procédé d'emballage vertical

Country Status (1)

Country Link
WO (1) WO2008107495A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012006656A (ja) * 2009-11-25 2012-01-12 Sanko Kikai Kk 自動包装機の超音波しごき機構
CN109367830A (zh) * 2018-12-05 2019-02-22 广州市铭科包装机械有限公司 超声波垂直螺杆下料包装装置
CN109625372A (zh) * 2018-12-17 2019-04-16 昆山迈格金相机械设备有限公司 一种超声波包装袋成型机

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139174A (en) * 1983-02-24 1984-11-07 David William Openshaw Filling of flexible packages
EP0959397A2 (fr) * 1998-05-18 1999-11-24 Ishida Co., Ltd. Commande de temps et machine d'emballage équipée d'une telle commande
US6000197A (en) * 1998-03-10 1999-12-14 Illinois Tool Works Inc. Process and machine for forming bags having a fastener assembly with transverse profiles
US6179015B1 (en) * 1998-11-12 2001-01-30 Rovema Verpackungsmaschinen Gmbh Device and method for packaging
EP1228964A1 (fr) * 2001-02-06 2002-08-07 Orihiro Engineering Co., Ltd. Procédé de fabrication de sacs flexibles, et machine verticale de fabrication, de remplissage et de scellage
US6631605B1 (en) * 1999-05-14 2003-10-14 Glopak Inc. Use of a multilayer film in a high-speed pouch forming, sealing and filling machine, and method of operation
US6655110B2 (en) * 2001-03-28 2003-12-02 Tna Australia Pty Limited Apparatus to aid in forming a package
EP1474989A1 (fr) * 2003-05-03 2004-11-10 Poly-clip System GmbH & Co. KG Procédé de fabrication d'emballages de portion à partir d'une feuille tubulaire
DE10347015A1 (de) * 2003-10-07 2005-04-28 Hastamat Verpackungstechnik Gm Verfahren und Vorrichtung zum kontinuierlichen Schweißen/Siegeln von Längsnähten

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139174A (en) * 1983-02-24 1984-11-07 David William Openshaw Filling of flexible packages
US6000197A (en) * 1998-03-10 1999-12-14 Illinois Tool Works Inc. Process and machine for forming bags having a fastener assembly with transverse profiles
EP0959397A2 (fr) * 1998-05-18 1999-11-24 Ishida Co., Ltd. Commande de temps et machine d'emballage équipée d'une telle commande
US6179015B1 (en) * 1998-11-12 2001-01-30 Rovema Verpackungsmaschinen Gmbh Device and method for packaging
US6631605B1 (en) * 1999-05-14 2003-10-14 Glopak Inc. Use of a multilayer film in a high-speed pouch forming, sealing and filling machine, and method of operation
EP1228964A1 (fr) * 2001-02-06 2002-08-07 Orihiro Engineering Co., Ltd. Procédé de fabrication de sacs flexibles, et machine verticale de fabrication, de remplissage et de scellage
US6655110B2 (en) * 2001-03-28 2003-12-02 Tna Australia Pty Limited Apparatus to aid in forming a package
EP1474989A1 (fr) * 2003-05-03 2004-11-10 Poly-clip System GmbH & Co. KG Procédé de fabrication d'emballages de portion à partir d'une feuille tubulaire
DE10347015A1 (de) * 2003-10-07 2005-04-28 Hastamat Verpackungstechnik Gm Verfahren und Vorrichtung zum kontinuierlichen Schweißen/Siegeln von Längsnähten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012006656A (ja) * 2009-11-25 2012-01-12 Sanko Kikai Kk 自動包装機の超音波しごき機構
CN109367830A (zh) * 2018-12-05 2019-02-22 广州市铭科包装机械有限公司 超声波垂直螺杆下料包装装置
CN109625372A (zh) * 2018-12-17 2019-04-16 昆山迈格金相机械设备有限公司 一种超声波包装袋成型机

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