EP3539882A1 - Dispositif d'emballage de produits - Google Patents

Dispositif d'emballage de produits Download PDF

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Publication number
EP3539882A1
EP3539882A1 EP19157821.0A EP19157821A EP3539882A1 EP 3539882 A1 EP3539882 A1 EP 3539882A1 EP 19157821 A EP19157821 A EP 19157821A EP 3539882 A1 EP3539882 A1 EP 3539882A1
Authority
EP
European Patent Office
Prior art keywords
forming
diffuser
feed
bag
bags
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.)
Withdrawn
Application number
EP19157821.0A
Other languages
German (de)
English (en)
Inventor
Jean-Claude CLAEYS
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.)
Messer Belgium NV
Original Assignee
Messer Belgium NV
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 Messer Belgium NV filed Critical Messer Belgium NV
Publication of EP3539882A1 publication Critical patent/EP3539882A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • 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or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied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or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device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or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device of Vertical Form-Fill-Seal [VFFS] machines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
    • 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it

Definitions

  • a device for packaging products comprising means for feeding an endless film, forming means for forming bags from the endless film having a forming portion forming the endless film into a tube, having a longitudinal sealing unit for longitudinally closing the tube and a tube
  • a transverse sealing and separating unit for forming bags from the tube, and separating the bags from the tube comprising means for feeding a product to be packaged into the bags, and means for supplying inert gas to a supply lance disposed within the forming section of the forming means equipped.
  • tubular bag machines Such devices for packaging products, in particular food products, are known by the term "tubular bag machines".
  • a tubular bag machine the packaging of a product takes place in such a way that a flat, endless packaging film is formed into a tube, from which longitudinal and transverse welding a sequence of bags is formed, which initially still each have an access opening for the product. After feeding the product, this is also closed by welding and the now closed bag separated from the rest of the hose.
  • Tubular bag machines are known in a vertical design, in which in particular a free-flowing or liquid product is metered into the bag under the action of gravity, or as a horizontal arrangement, in which a generally dimensionally stable product by means of a feeder, such as a conveyor belt, horizontal in the open bag is inserted.
  • the product is usually supplied via a device which comprises a hopper and a forming tube adjoining it, around which the film is guided in a tubular manner during operation of the machine.
  • a device which comprises a hopper and a forming tube adjoining it, around which the film is guided in a tubular manner during operation of the machine.
  • the product is filled into the bag under the force of gravity through the forming tube.
  • the closure of the bag is carried out by a renewed Transverse welding and then the separation of the closed bag from the subsequent film.
  • Such devices are particularly suitable for packaging lumpy or powdery products, in particular food products, such as cereal or cereal products such as rice, cereals or snacks such as potato chips, peanuts, peanut flips, spice powder, sausages, fruits, vegetables, French fries, various meat products, Potatoes and others.
  • cereal or cereal products such as rice
  • cereals or snacks such as potato chips, peanuts, peanut flips, spice powder, sausages, fruits, vegetables, French fries, various meat products, Potatoes and others.
  • tubular bag machines of this type can also be used for packaging liquid products, in particular liquid foods.
  • a shaping device in the form of two forming shoulders arranged laterally on the right and left of the feeding device is used instead of the forming tube.
  • the feeding device comprises, for example, a conveyor belt, via which the products to be packaged are transported into the bags, wherein the forming shoulders also serve for the lateral guidance of the products.
  • Horizontal tubular bag machines are particularly suitable for packaging individually packaged foods such as meat products, sausages, cheese or baked goods.
  • the packaging of food under a protective gas atmosphere is a well-known method for increasing the shelf life or improving the quality of the packaged product.
  • a protective gas atmosphere modified atmosphere
  • shielding gases suppress the oxidative changes to foods and the activity of microorganisms.
  • quality improvements such as a specific, desired surface coloration or an improved moisture content of the product.
  • tubular bag packaging In order to be able to produce a modified atmosphere in tubular bag packaging, it is known to flood it with a protective gas before, during or after the product has been introduced into the bag, with the surrounding atmosphere still being expelled in the bag. In most usual today tubular bag machines this is done by means of a tubular feed lance, the is arranged within the molding device, for example within the forming tube of a vertical tubular bag machine.
  • Another consideration is the direction of filling the protective gas in smaller quantities, but as a cold gas or even in the liquefied state in the bag.
  • the gas heats up quickly and, at the volume increase associated with the heating, quickly forces the ambient atmosphere remaining in the bag out of the bag.
  • Such arrangements are for example from the EP 1 538 082 A1 or the DE 10 2010 027 465 A1 known.
  • these devices require means for cooling the protective gas or for providing liquefied inert gas, which are not available everywhere.
  • Object of the present invention is therefore to provide a tubular bag machine with inert gas, which is characterized by a simple structure and compared to devices of the prior art reduced inert gas consumption.
  • the object of the invention is also to provide a method for packaging products under a protective gas atmosphere by means of a tubular bag machine, which has a reduced compared to methods of the prior art shielding gas consumption.
  • a device according to the invention of the type and purpose mentioned above is thus characterized in that the feed lance is equipped, at least in the region of an orifice section, with a diffuser having a plurality of flow channels.
  • the supply lance is thus a tubular supply line for a protective gas, which is arranged in the interior of the mold section, around which the endless film is formed into a tube and longitudinally sealed by means of the longitudinal sealing unit, or it is with its mouth portion of the Form section in the direction of the already longitudinally and simply transversely sealed bag before.
  • the mold section preferably serves as a task unit for feeding the product and directs the product into the forming bags. At least in the area of its mouth section, the feed lance with a Equipped with diffuser.
  • the diffuser has for the passage of the protective gas flow channels whose mean flow cross-sections are small compared to the cross section of the feed lance and which are arranged such that they have in their majority a to the longitudinal axis of the feed lance - seen in the flow direction - radially outwardly pointing direction component;
  • the feed lance on the outlet side preferably has no central outlet opening through which a substantial part of the gas could escape to the front, ie in the direction of the mouth.
  • the protective gas is thus introduced from the feed lance with a radial direction component directed toward the outside in essential parts to the bag.
  • the invention is based on the finding that the direction in conventional bagging machines from the feed lance, highly directed gas jet in the bag leads to the expression of turbulent flows that favor mixing of the protective gas with the oxygen-rich atmosphere present in the bag and beyond a suction of Ambient atmosphere from the environment of the bag cause.
  • a threshold value of a gas component for example oxygen
  • the invention avoids the occurrence of turbulent flows at least largely and therefore leads to a considerable saving in inert gas.
  • the diffuser has a mouth-side end portion of a porous material.
  • the diffuser is a shaped body made of a porous material arranged at the delivery lance on the outlet side and resting on the Feed lance is frontally mounted or connected to this and the mouth opening completely covered.
  • at least the mouth-side end portion of the diffuser made of sintered metal, for example, sintered bronze, sintered iron, sintered steel or sintered aluminum, or made of a ceramic material.
  • a mouthpiece made of plastic or metal, for example stainless steel, can be used, through which a multiplicity of flow paths are passed in such a way that the protective gas flowing through them is deflected at least partially in a radially outward-pointing direction
  • the diffuser may be integrally formed with the feed lance, and include, for example, incorporated in the mouth region of the feed lance radially arranged flow channels.
  • the diffuser is formed at least at its mouth-side end portion such that it tapers in the mouth direction.
  • the diffuser is conical or spherical cap-shaped.
  • the diffuser also has in its interior a flow-connected with the interior of the feed lance recess, the diffuser thus forms a to the interior of the feed lance out hollow body whose walls are penetrated by flow channels of the type described.
  • the protective gas coming from the feed lance flows out of the recess via the flow channels, which are preferably distributed uniformly over the surface of the diffuser. This causes a particularly uniform distribution of the protective gas.
  • this embodiment of the diffuser is a body of sintered metal that is conically shaped and equipped on the inside with a conical recess, for example.
  • the flow channels of the diffuser have a mean flow cross-section, or in the case of a sintered body, an average pore width, between 20 microns and 200 microns, preferably between 50 microns and 100 microns.
  • the invention can be used both in vertical and in horizontal tubular bag machines, wherein in both cases the feed lance is arranged within the mold section.
  • the mold section preferably comprises a forming tube adjoining a feed hopper for feeding the product, around which the film is guided and which at the same time serves as a feed unit for feeding the product into the bags.
  • the feed lance is arranged in this case in the interior of the forming tube and parallel to its longitudinal axis and equipped at its downwardly directed mouth with a diffuser of the type described.
  • the forming section comprises two forming shoulders, which are arranged laterally to a task unit, such as a conveyor belt, for transporting the products to be packaged, and around which the endless film is formed and closed longitudinally to form a tube.
  • the equipped with the diffuser feed lance is arranged in this case between the two forming shoulders.
  • a method of packaging products using a device wherein an endless film is formed into a tube on a forming section of a former, the tube is longitudinally closed by a longitudinal sealing unit and removed from the tube in a transverse sealing and severing unit a sequence of bags is formed, wherein in each bag a product and by means of a arranged within the forming section lance a protective gas is according to the invention is characterized in that the feed lance are equipped at least mouth side with a diffuser and the protective gas in an at least partially radially after outwardly directed flow discharged from the diffuser and is entered as an at least largely laminar, non-directional flow in the bag.
  • a protective gas is filled into the bag and the bag is then sealed gas-tight immediately.
  • the supply of the protective gas via the feed lance takes place in such a way that the flow of the protective gas is supplied to a diffuser at least in a mouth section of the feed lance, in which the protective gas is partially forced outwards in a direction pointing radially outwards relative to the axis of the feed lance.
  • the protective gas spreads evenly in the bag and displaces the atmosphere still present in the bag, without any appreciable extent resulting in turbulent flows or intermixing.
  • the preferred protective gas used in the device according to the invention or in the method according to the invention is nitrogen, carbon dioxide, nitrogen oxide, oxygen, hydrogen, a noble gas, in particular argon, banana gas or a mixture of one or more of these gases.
  • device 1 is a vertical bagging machine.
  • the device 1 comprises in known manner a molding device 2 with a vertically arranged forming tube 3, on which an endless film 4, which is fed from a feed device not shown here continuously or in batches, formed into a tube and by means not shown here Longitudinal sealing unit laterally, for example by welding, is closed.
  • the formed to the hose, guided in the direction of arrow 5 on the forming tube 3 endless film 4 is by means of a transverse sealing unit 6 at regular intervals transverse to the direction, for example by means of a Weld seam 7 sealed and separated from the following hose.
  • the forming tube 4 serves not only to form a tube from the endless film 4, but at the same time as a task unit for supplying a product to be packaged 9 to the bags 8.
  • the product 9, in particular a powdery or lumpy Good, is on one at the top Filled front end of the forming tube 3 arranged hopper 10 and then falls through the interior of the forming tube 3 through under the action of gravity in the bag 8 into it.
  • the bags 8 can each be assigned a predetermined amount of product 9. After the product 9 has been introduced into the bag 8, it is closed by means of the transverse sealing unit 6 along a line 11 and subsequently separated.
  • the device 1 is clocked so that the bags 8 always have the same length L and are filled with the same amount of product 9.
  • a protective gas from a source is introduced via a gas supply line 12 during the packaging process.
  • the gas supply line 12 terminates in a feed lance 13, which is arranged within the forming tube 3, parallel to its longitudinal axis and opens out in a lower region of the forming tube 3 or just below the forming tube 3.
  • the feed lance 13 is equipped with a diffuser 14, which serves to produce a laminar flow in the supply of the protective gas.
  • the diffuser 14 in the exemplary embodiment produced here is a shaped body made of a porous material, for example sintered metal or sintered ceramic.
  • the diffuser 14 comprises a connecting portion 15 and an insertion portion 16, which are interconnected or integrally formed of a sintered body.
  • the tubular connecting portion 15 includes a connecting member for connecting to the feeding lance 13, for example, a External thread 17 which is screwed into a corresponding internal thread of the feed lance 13.
  • the entry portion 16 is conically formed in the outer periphery and tapers in the direction of its end remote from the feed lance 13 end. On the inside, the entry section 16 has an approximately conical recess 18, which is open to the interior of the feed lance 13, but otherwise completely surrounded by the sintered body of the entry section 16.
  • the entry section Due to its porous structure, the entry section has a multiplicity of flow channels which have an average pore width of 50 to 100 micrometers.
  • the flow channels are distributed uniformly over the surface of the shaped body and emerge at the surface of the entry section 16 at least partially with a direction radial to a longitudinal axis 19 of the insertion lance 13 radial direction.
  • protective gas is introduced via the feed lance 13 before or simultaneously with the feed of the product 9.
  • the supply of the protective gas into the bag 8 takes place exclusively via the pores of the sintered body in the entry section 16 of the diffuser 14.
  • the protective gas exits via the surface of the entry section 16 distributed and sinks in a largely laminar flow into the bag 8. Turbulent flows and caused by this strong mixing of the supplied protective gas with in the bag 8 still existing atmosphere can be avoided. This achieves a rapid construction of a predominantly consisting of inert gas atmosphere in the bag 8. The displaced by this atmosphere escapes through the forming tube 3; a suction is not required.
  • a diffuser 14 consisting of a sintered body, as shown in the drawings, other types of diffusers may also be provided, which allow the formation of a substantially laminar, non-directional flow and the protective gas as it emerges from the diffuser into a diffuser Force radially outward broadening flow.
  • the diffuser can also have a screen or grid arrangement, or comprise a mouthpiece made of plastic or metal, in which corresponding flow channels are incorporated.
  • the delivery lance 13 equipped with a diffuser 14 of the type described is incidentally not only suitable for vertical tubular bag machines, but can also be used in horizontal tubular bag machines.
  • the invention is particularly suitable for retrofitting existing devices that are equipped with a feed lance for introducing inert gas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP19157821.0A 2018-03-14 2019-02-18 Dispositif d'emballage de produits Withdrawn EP3539882A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018002058.5A DE102018002058A1 (de) 2018-03-14 2018-03-14 Vorrichtung zum Verpacken von Produkten

Publications (1)

Publication Number Publication Date
EP3539882A1 true EP3539882A1 (fr) 2019-09-18

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EP19157821.0A Withdrawn EP3539882A1 (fr) 2018-03-14 2019-02-18 Dispositif d'emballage de produits

Country Status (2)

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EP (1) EP3539882A1 (fr)
DE (1) DE102018002058A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4089018A1 (fr) * 2021-05-11 2022-11-16 Messer SE & Co. KGaA Procédé et dispositif d'emballage de produits

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433188A (en) * 1977-08-18 1979-03-10 Daido Oxygen Method and device for replacing inert gas in airtight packing
EP0755875A1 (fr) * 1995-06-30 1997-01-29 Orihiro Co., Ltd. Emballages et leur procédé de fabrication
US20060213153A1 (en) * 2005-03-03 2006-09-28 Sanfilippo James J Device and system for modified atmosphere packaging
JP2008133041A (ja) * 2006-11-28 2008-06-12 Kawashima Packaging Mach Ltd ガス置換袋包装における置換ガス吹出し用ノズル及びそれを用いた製袋充填ガス置換包装機

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1786137C3 (de) 1968-08-22 1974-01-03 Fr. Hesser Maschinenfabrik Ag, 7000 Stuttgart Schlauchbeutelfüllmaschine mit einem der Schlauchbildung dienenden Formrohr und einem vom Formrohr umgeschlossenen Füllrohr
DE29820364U1 (de) 1998-11-13 1999-02-25 Merz Verpackungsmaschinen GmbH, 35423 Lich Form- und Füllrohr
FR2819235B1 (fr) 2001-01-08 2003-07-04 Air Liquide Dispositif de conditionnement de produits dans des emballages et installation d'emballage comportant un tel dispositif
EP1538082A4 (fr) 2002-07-30 2009-09-09 Ishida Seisakusho Machine a empaqueter, procede et systeme d'empaquetage
DE102010027465A1 (de) 2010-07-17 2012-01-19 Messer Austria Gmbh Verfahren zum Verpacken von Lebensmitteln in nicht formstabilen Verpackungseinheiten unter Schutzgas
JP5918980B2 (ja) 2011-02-04 2016-05-18 株式会社イシダ 製袋包装機
DE102012220730A1 (de) 2012-11-14 2014-05-15 Robert Bosch Gmbh Schlauchbeutelmaschine mit einer Gaseinstellvorrichtung sowie Gaseinstellvorrichtung für eine derartige Schlauchbeutelmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433188A (en) * 1977-08-18 1979-03-10 Daido Oxygen Method and device for replacing inert gas in airtight packing
EP0755875A1 (fr) * 1995-06-30 1997-01-29 Orihiro Co., Ltd. Emballages et leur procédé de fabrication
US20060213153A1 (en) * 2005-03-03 2006-09-28 Sanfilippo James J Device and system for modified atmosphere packaging
JP2008133041A (ja) * 2006-11-28 2008-06-12 Kawashima Packaging Mach Ltd ガス置換袋包装における置換ガス吹出し用ノズル及びそれを用いた製袋充填ガス置換包装機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4089018A1 (fr) * 2021-05-11 2022-11-16 Messer SE & Co. KGaA Procédé et dispositif d'emballage de produits
DE102021002484A1 (de) 2021-05-11 2022-11-17 Messer Se & Co. Kgaa Verfahren und Vorrichtung zum Verpacken von Produkten

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Publication number Publication date
DE102018002058A1 (de) 2019-09-19

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