EP3867159A1 - Fardeleuse à flux vertical et procédé de production d'emballages à teneur réduite en gaz - Google Patents

Fardeleuse à flux vertical et procédé de production d'emballages à teneur réduite en gaz

Info

Publication number
EP3867159A1
EP3867159A1 EP19783553.1A EP19783553A EP3867159A1 EP 3867159 A1 EP3867159 A1 EP 3867159A1 EP 19783553 A EP19783553 A EP 19783553A EP 3867159 A1 EP3867159 A1 EP 3867159A1
Authority
EP
European Patent Office
Prior art keywords
compression means
cross
package
compression
wrapper
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.)
Pending
Application number
EP19783553.1A
Other languages
German (de)
English (en)
Inventor
Peter Wilhelmus Henricus Rietjens
Rudy VAN GULIK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Food Solutions Weert BV
Original Assignee
GEA Food Solutions Weert BV
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 GEA Food Solutions Weert BV filed Critical GEA Food Solutions Weert BV
Publication of EP3867159A1 publication Critical patent/EP3867159A1/fr
Pending legal-status Critical Current

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
    • 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
    • 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
    • B65B9/2007—Means for stripping or squeezing filled tubes prior to sealing to remove air or products from sealing area
    • 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
    • B65B9/12—Subdividing filled tubes to form two or more packages by sealing or securing involving displacement of contents

Definitions

  • the invention relates to improvements of a vertical flow-wrapper, which produces packages, with a frame/housing, at which a form-fill-tube, a longitudinal-sealing means and a cross-sealing means and a cutting means.
  • the invention also relates to a method to produce a package from a plane film.
  • a common method of making packages out of a film web is the use of a vertical flow- wrapper.
  • a packaging machine receives a continuous flat sheet, for example a film of plastic material, e.g. a thermoplastic material, which is transported continuously or intermittently and passed downwardly over a form shoulder and is then shaped into a tubular form, i.e. into a film tube, by being wrapped around a vertical form-fill tube of the packaging machine.
  • the film web After being wrapped around the vertical form-fill tube, the film web is longitudinally closed by means of a longitudinally extending seal which is applied to the film especially by heat sealing the lateral/longitudinal margins of the film web or by heat sealing in the vicinity of these margins thereby joining them.
  • the film tube has conventionally a rectangular, elliptical or a circular cross-sectional area.
  • the film tube is closed by cross-sealing means, preferably in a direction perpendicular to the direction of flow, i.e. transversely.
  • individual packages are defined out of the continuous film tube.
  • a product such as a foodstuff, is introduced by dropping the product through a form-fill tube and into the film tube surrounding the form-fill- tube.
  • the film tube is transversely open at its upper end, i.e. not cross-sealed.
  • the film tube together with the product is moved downwardly and then a top cross-seal is formed above the product and thereby a
  • hermetically closed package produced.
  • the package is separated from the film tube by cutting means.
  • a gas normally air is also enclosed in the package, which is undesirable.
  • the purpose of the invention is therefore to provide a vertical flow-wrapper and a method, which allows to reduce the amount of gas in the package.
  • a vertical flow-wrapper which produces packages, with a frame/housing, at which a form-fill-tube, a longitudinal-sealing means and a cross-sealing means and a cutting means are provided, wherein it further comprises compression means, which at least partially compress each package prior to and/or during providing a cross seal to the package.
  • compression means which at least partially compress each package prior to and/or during providing a cross seal to the package.
  • the present invention relates to a vertical flow-wrapper with a frame and/or a housing, which receives a continuous flat sheet, e.g. a film of plastic material, e.g. a thermoplastic material, which is transported continuously or intermittently and passed downwardly over a form shoulder and is then shaped into a tubular form, i.e. into a film tube, by being wrapped around a vertical form-fill tube of the packaging machine.
  • the film web is longitudinally closed by means of a longitudinally extending seal which is applied to the film especially by heat sealing the lateral/longitudinal margins of the film web or by heat sealing in the vicinity of these margins thereby joining them.
  • the film tube has conventionally a rectangular, elliptical or a circular cross-sectional area.
  • the film tube is closed by cross-sealing means, preferably in a direction perpendicular to the direction of flow, i.e. transversely.
  • individual packages are defined out of the continuous film tube.
  • a product such as a foodstuff, is introduced into the film tube by dropping the product through a form-fill tube and into the film tube surrounding the form-fill tube and onto a lower-, first cross seal.
  • the film tube is transversely open at its upper, top end, i.e. not cross-sealed.
  • the film tube together with its product is moved downwardly and then a top cross-seal is formed above the product and thereby the hermetically closed package produced.
  • the package is separated from the film tube by cutting means.
  • the inventive vertical flow wrapper further comprises compression means, which at least partially compress each package prior to and/or during providing a cross seal to the package. Due to the compression, gas, e.g. air, within the package is removed, so that the volume of the package and/or the amount of oxygen in the package is reduced.
  • gas e.g. air
  • the compression means is preferably displaced towards the film tube.
  • two, more preferably two parallel compression means are provided, whose distance relative to each other is reduced in order to remove gas out of the package.
  • the compression means are at least partially made from flexible material, preferably a flexible plastic and/or rubber material.
  • a preferred flexible material is silicon.
  • the silicon may have charge to repel the film material.
  • the compression means can be molded and or printed.
  • the compression means are at least partially hollow.
  • the hollow section can be partially or completely filled with a gas and/or a fluid, wherein a gas, preferably air in the hollow section is preferred.
  • the pressure in the hollow part is preferably adjustable.
  • the compression means is a bellows.
  • the compression means may have a round, oval, polygonal, more preferably rectangular or square cross section.
  • the cross section is constant over the entire length of the compression means, at least at ambient pressure in the hollow section.
  • the bellows preferably has a constant wall thickness over its length.
  • the compression means is connected to a pressure source, which maintains and/or changes an internal pressure within the compression means, particularly within the hollow section, which hence preferably acts as a pressure chamber.
  • the pressure source preferably provides at least temporarily a pressure above and/or below ambient pressure, i.e. the pressure that surrounds the inventive vertical flow wrapper.
  • the pressure source is controlled, more preferably such that it is maintained constant within the hollow section, even if the compression means is deformed.
  • the pressure source can be used to alter the shape of the flexible compression means, e.g. increase its size by increasing the pressure in the hollow section or vice versa.
  • the cross section of the compression means preferably the bellows changes with the length of the compression means when the hollow section is pressurized.
  • the compression means is provided parallel to the cross-sealing means.
  • the compression means is provided as a longitudinal bar, which preferably is provided parallel to the cross-sealing means and even more preferably below the cross sealing means relative to the direction of the gravitational force.
  • the bar preferably has a square- or rectangular cross section, which more preferably is constant over its entire length.
  • the shape of the compression means at least partially follow the shape of the tip of the pile that the product forms within the package.
  • the compression means can be formed like the tip of an arrow or the segment of an arch.
  • the compression means is attached to the cross-sealing means. In case there are two compression means, preferably one compression means is connected to each side of the cross-sealing means, which as well comprises two parts which co-act during cross sealing. More preferably, each compression means comoves with the respective part of the cross-sealing means.
  • the compression means are preferably directly driven by the cross- sealing means.
  • the surface of the compression means comprises anti-sticking means, preferably one or more bulge(s).
  • the bulges preferably extend out of the surface of the compression means, preferably the bellows.
  • the bulges are preferably provided according to a pattern and or equidistantly. During compressin, the bulges are in contact with the film.
  • the compression means can be provided in different heights, i.e. the extension of the compression means in the transport direction of the film.
  • the compression means are preferably exachangeable, preferably depending on the length of the bag, i.e. extension of the bag in the transport direction of the film.
  • each compression means comprises an identification, so that the machine can recognize that the correct compression means has been mounted for a specific bag.
  • the problem is also solved with a method to produce a package from a plane film, which is formed around a form-fill tube into a film tube, whose distal ends are connected by a longitudinal sealing means with a longitudinal seal, wherein a first cross seal is provided at the film tube by cross-sealing means and wherein the film tube is filled with a product before a second cross seal is provided at the film tube and the filled package are separated from the film tube by cutting means, characterized in, that prior and/or during the provision of the second cross seal, a gas is pressed out of the package by compression means.
  • This embodiment of the present invention relates to a method to operate a vertical flow- wrapper with a frame and/or a housing, which receives a continuous flat sheet, e.g. a film of plastic material, e.g. a thermoplastic material, which is transported continuously or intermittently and passed downwardly over a form shoulder and is then shaped into a tubular form, i.e. into a film tube, by being wrapped around a vertical form-fill tube of the packaging machine.
  • the film web After being wrapped around the vertical form-fill tube, the film web is longitudinally closed by means of a longitudinally extending seal which is applied to the film especially by heat sealing the lateral/longitudinal margins of the film web or by heat sealing in the vicinity of these margins thereby joining them.
  • the film tube has conventionally a rectangular, elliptical or a circular cross-sectional area.
  • the film tube is closed by cross-sealing means, preferably in a direction perpendicular to the direction of flow, i.e. transversely.
  • individual packages are defined out of the continuous film tube.
  • a product such as a foodstuff, is introduced into the film tube by dropping the product through a form-fill tube and into the film tube surrounding the form-fill tube and onto a lower-, first cross seal.
  • the film tube is transversely open at its upper, top end, i.e. not cross-sealed.
  • the film tube together with its product is moved downwardly and then a top cross-seal is formed above the product and thereby the hermetically closed package produced.
  • the package is separated from the film tube by cutting means.
  • a gas is pressed out of the package by compression means.
  • the film tube is compressed in the vicinity of the second/upper cross seal and/or in the vicinity of the upper end of the package.
  • the package is compressed over its entire extension parallel to the upper cross seal.
  • the region of the package above the level of the packaging item, relative to the direction of the gravitational force is compressed.
  • the compression means are preferably at least partially made from synthetic and/or rubber material, preferably a flexible material. This material is preferably a material which at least partially comprises silicon.
  • the compression means can be moulded or printed.
  • the compression means are mounted to a frame which is preferably connected to the cross sealing means.
  • the compression means are at least partially hollow.
  • This hollow section which is filled with a gas, e.g. air, and/or a fluid, e.g. water, preferably comprises a
  • connection/opening which can for example be connected to a pressure source, or via which the hollow section can be vented, so that a constant pressure can be maintained in the hollow section, even if the compression means is deformed during operation.
  • the size of the compression means preferably the volume of the hollow section can be in- and/or increased as needed.
  • the compression means deform during the compression of the package.
  • the volume of the hollow section becomes smaller, particularly during coaction of two compression means, each connected to one part of the cross sealing means.
  • the pressure in the compression means is maintained constant during the compression of the package.
  • Figure 1 shows schematically the vertical flow-wrapper according to the
  • FIGS 2 and 3 depict the compression means'! 0.
  • Figures 4, 5, 5a show the connection of the compression means to the cross sealing means.
  • Figure 5b shows a preferred embodiment of the shape of the compression
  • Figure 6 shows a combination of a bellow and O-rings as compression means
  • Figure 7 show the package being compressed by the compression means
  • FIG. 1 the vertical flow-wrapper 1 according to the invention is schematically shown.
  • a vertical flow wrapper is a packaging machine, which forms a plane film web into a film tube, which is transported along a form-fill tube 4. Two ends of this film tube are sealed together by a longitudinal sealing means 5. Subsequently, the packaging item is filled into the film tube and a cross-seal is applied to the film tube to close the package. Simultaneously or after applying the cross-seal, the finalized packages are cut off the film tube.
  • the vertical flow wrapper comprises a frame/housing 8, at which a form shoulder 3, a form-fill tube 4 and longitudinal sealing means 5 and cross-sealing means 6 are provided.
  • the vertical flow- wrapper may comprise gusset- forming means to form the bottom and/or the top of each package.
  • a web of a film 4, especially a weldable plastic film 4 is supplied from a reel 9, which supplies the plane film continuously or intermittently to a form shoulder 3, which shapes the film web into a rather tubular form around a form-fill tube 2.
  • a“tubular form” of the packages or of the film means any cross-sectional form including a circular form or another form, and especially a rectangular or generally a polygonal form.
  • cross seals extending preferably perpendicularly to the direction of flow of the film, are applied, especially by means of cross-sealing means 6.
  • These cross sealing means 6 apply to the package 7 not only an upper/second cross-seal closing the top of the package 7, but these cross-sealing means 6 advantageously also provide, preferably simultaneously a lower/first cross-seal defining the bottom of the subsequent, upstream package 7.
  • the packages 7 produced are separated from one another by a cutting means, which are preferably incorporated into the cross-sealing means 6.
  • the package is filled with the product, preferably an edible product.
  • the product preferably an edible product.
  • package/film tube is compressed, so that a gas, e.g. air, in the package is removed.
  • a gas e.g. air
  • Figures 2 and 3 show the compression means 10, which are in the present case provided as a bar, which is preferably provided horizontally and/or parallel to the cross sealing means.
  • the compression means 10 is here depicted as a bellows.
  • the compression means 10 can be connected to a frame 11 , preferably by a reversible connection, which can be provided without tools. Two of these compression means co-act during the compression of the package/film tube.
  • the compression means, particularly its jacket 15 is preferably made from a flexible material, such as silicon and/or rubber, particularly the part of the jacket that is contact with and/or faces towards the package/film tube. In the present case, the
  • compression means has a constant cross section over its entire length, which can be square or rectangular, round or oval.
  • Figure 3 depicts a cut through the compression means according to Figure 2.
  • the compression means can, at least partially, be hollow, so that it comprises a hollow section/pressure chamber 14.
  • This hollow section preferably with a constant cross section over its entire length, preferably comprises a connection 13 which connects the hollow section to a pressure source and/or through which the hollow section can be vented.
  • the hollow section is preferably constant over the entire length of the compression means.
  • the pressure source can be vacuum or excess pressure, so that the volume of the hollow section 14 can be in- and/or decreased.
  • the compression means is preferably compressed.
  • the pressure in the hollow section 14 is preferably maintained constant, at least after a certain pressure level has been achieved.
  • the surface of the compression means 10, particularly the part of its jacket that comes in touch with the package/film tube can comprise anti-sticking means 16, like projections 16.
  • the projections are preferably provided as rows, preferably equidistant rows.
  • the projections in the rows are preferably equidistant.
  • FIGS 4 and 5 depict the cross sealing/cutting means 6 and the compression means 10 connected to it.
  • the cross sealing/cutting means 6 comprises two members, which are move towards each other to apply the cross seal and away from each other to open the passage, as depicted by the double arrows.
  • One compression means 10 is connected to each member 6 via the frame 11 , which co-moved together with the members.
  • Connection means 23, here pins 23, are used to connect the compression means 10 the frame 1 1.
  • the frame 11 comprises an array of holes which are preferably arranged equidistantly, so that the compression means 10 can be provided at different distances relative to the cross sealing means 6 and/or the compression means can be exchanged easily, preferably without tools.
  • a scale 17 can be provided to assist attaching the compression means 10 to the frame.
  • Figure 5a shows a preferred embodiment to fix the compression means 10 to the cross sealing/cutting means 6 and/or to the frame 11.
  • fixation means 24 which are provided inside the compression means, here inside the hollow bellow and/or outside fixation means 25 are provided.
  • a preferred means to fix the compression means 10 to the cross sealing/cutting means 6 and/or to the frame 11 is without tools, preferably utilizing one or more magnets.
  • means are provided which fix the compression means 10 to the cross
  • sealing/cutting means 6 and/or to the frame 11 at the desired position are sealing/cutting means 6 and/or to the frame 11 at the desired position.
  • Figure 5b shows a preferred embodiment of the shape of the compression means 10.
  • the lower end, the end 26 that is directed towards the product is arch-shaped and can preferably follow the pile of a product filled into the bags.
  • the arch may have the contour of the segment of a circle, the segment of a an ellipse and/or of a polygon.
  • Figure 6 shows a preferred embodiment of the compression means 10, here a combination of a bellows and one or more O-ring(s) 29.
  • two poles 27, are provided around which an O-ring is stretched.
  • the O-ring can be held in position by grooves 28, which accommodate the O-ring 29.
  • seven O-rings can be provided in the seven parallel grooves 28.
  • Figure 7 depict the package 7 and the compression means 10.
  • the bag 7 comprises a longitudinal seal, not depicted, a lower, first cross seal 18 and a second, upper cross seal 19. “Upper” and“lower” relates to the direction of force of gravity.
  • the cross seals 18, 19 are preferably provided perpendicular to the direction of motion of the film tube or package.
  • the cross seals 18, 19 extend into and out of the paper plane.
  • the package is filled with a packing item 21.
  • the cross seals extend horizontally during production.
  • the compression means 10 preferably extend also horizontally and are preferably provided such that they compress the region between the second horizontal seal and the packing item, the upper end of the packing item. For the compression of the film-tube/package, the
  • compression means 10 move towards each other as depicted by the arrow 22.
  • the compression preferably takes place before the package 7 is hermetically sealed.

Landscapes

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

Abstract

L'invention concerne des améliorations apportées à une fardeleuse à flux vertical, qui produit des emballages, avec un cadre/logement, au niveau desquels un tube de remplissage, un moyen de scellement longitudinal et un moyen de scellement transversal et un moyen de découpe. L'invention concerne également un procédé de production d'un emballage à partir d'un film plan.
EP19783553.1A 2018-10-19 2019-10-14 Fardeleuse à flux vertical et procédé de production d'emballages à teneur réduite en gaz Pending EP3867159A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18201583 2018-10-19
PCT/EP2019/077734 WO2020078879A1 (fr) 2018-10-19 2019-10-14 Fardeleuse à flux vertical et procédé de production d'emballages à teneur réduite en gaz

Publications (1)

Publication Number Publication Date
EP3867159A1 true EP3867159A1 (fr) 2021-08-25

Family

ID=63965167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19783553.1A Pending EP3867159A1 (fr) 2018-10-19 2019-10-14 Fardeleuse à flux vertical et procédé de production d'emballages à teneur réduite en gaz

Country Status (3)

Country Link
US (1) US20210380298A1 (fr)
EP (1) EP3867159A1 (fr)
WO (1) WO2020078879A1 (fr)

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CA3108334C (fr) * 2018-08-05 2024-03-12 David Paul Goodrich Produits de protection, tels que des enveloppes, presentant une combinaison unique de rembourrage interieur de papier en feuille a fente etendue et de doublure exterieure de papie r gaufre
JP7212356B2 (ja) * 2018-12-27 2023-01-25 株式会社イシダ 製袋包装機

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