WO2009131449A1 - Dispositif permettant d’emballer des produits - Google Patents

Dispositif permettant d’emballer des produits Download PDF

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Publication number
WO2009131449A1
WO2009131449A1 PCT/NL2009/050214 NL2009050214W WO2009131449A1 WO 2009131449 A1 WO2009131449 A1 WO 2009131449A1 NL 2009050214 W NL2009050214 W NL 2009050214W WO 2009131449 A1 WO2009131449 A1 WO 2009131449A1
Authority
WO
WIPO (PCT)
Prior art keywords
product
grippers
film
conveyor
displacement
Prior art date
Application number
PCT/NL2009/050214
Other languages
English (en)
Inventor
Gerarda Maria Van Der Stam
Original Assignee
Gerarda Maria Van Der Stam
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 Gerarda Maria Van Der Stam filed Critical Gerarda Maria Van Der Stam
Publication of WO2009131449A1 publication Critical patent/WO2009131449A1/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
    • B65B9/13—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 preformed tubular webs being supplied in a flattened state
    • B65B9/135—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 preformed tubular webs being supplied in a flattened state for palletised loads

Definitions

  • the present invention relates to a device for enclosing at least one product, such as a box, a packaged product or a product per se, with at least three corners, in a substantially resiliently stretchable and tubular film, comprising: grippers, one of which is arranged at each of the corners of the product for together engaging at least a free peripheral edge of the tubular film; moving means which co-act with the grippers to selectively move the grippers one of toward each other and away from each other; and displacing means which co-act with the grippers for displacement thereof at least along the product in a position moved apart relative to each other, therein arranging the tubular film round the product.
  • Such devices are known from for instance GB-I, 555, 235 and
  • the known devices have drawbacks during use.
  • a pulling force must be generated on the film to move it off the hook-like grippers.
  • This is usually only possible by closing the tubular film into a bag shape and arranging the single open side over the product. The closed side then ensures, when it abuts the product, that material of the film slides off the hook-like grippers.
  • this involves the use of appreciable quantities of film material, and it is precisely a crucial objective in the packaging industry to optimize and preferably reduce the quantities of packaging material.
  • the known art does not however provide any possibility of doing so, and large quantities of film material are required here to cover not only the sides, but also an end surface of the at least one product, in particular with the bottom of the tubular film closed in a bag shape.
  • For the purpose of closing the tubular film in a bag shape use can be made according to the prior art of welding blades, a cut and seal mechanism with heatable clamping or jaw parts and/or a measure or component in general based on thermowelding.
  • the present invention has for its object to obviate, or at least alleviate, the drawbacks of the known art, for which purpose the device according to the invention is distinguished from the known art in that at least one of the grippers comprises: a conveyor; and a drive for the conveyor, wherein the drive for the conveyor of the gripper transports film away from the grippers at a speed adapted to a speed of displacement of the grippers along the product and releases the film to close round the product .
  • a chosen length of tubular film need only be severed, cut or otherwise provided without having or needing to close an outer end.
  • the device can moreover also be simplified since no closing means (welding blades or the like) need be provided to close a tubular piece of packaging material in a bag shape.
  • Conveyors can moreover also be very favourable when arranging the tubular film round the grippers. A tubular film is much easier to position round and on the grippers using conveyors, even if the grippers are not disposed at a mutual distance corresponding exactly with the dimensions of the film.
  • a device according to the invention can thus have the feature that the conveyor comprises a belt which is tensioned in an endless loop round reversing wheels and against which the film lies during use. This is a very simple embodiment which is technically easy to realize.
  • the device according to the invention can further comprise: feed means for providing the tubular film to the grippers.
  • Film can thus be provided to the grippers without the intervention of closing, adhering or welding means, thus realizing a further optimization and simplification of the device.
  • the feed means comprise: severing or cutting means for separating a preselected length of the tubular film. Such a length is then preferably chosen, or in any case can be chosen, in accordance with the size of the product to be packaged, optionally in combination with considerations relating to a degree of stretch of the film obtained or to be obtained in order to realize optimum saving of packaging material.
  • the drive is adapted to unroll the film from the conveyor of the gripper and to release the film to close round the product at a speed lower than a speed of displacement of the gripper along the product realized with the displacing means. Stretch of the film in said direction can thus be determined to far-reaching extent by the interplay between displacing means and the controlled release of the film by means of the conveyor or conveyors of the grippers.
  • the device can have the feature that the severing or cutting means are adapted to separate a length of the tubular film which is shorter than, or at most at least approximately as long as, the size of the at least one product in the direction of displacement of the grippers along the product . The saving to be made on packaging material is thus demonstrated compared to previous techniques, where considerably much more material is required to also cover an end surface of the product with that part of the bag-like film where the film is closed with for instance a welded seam.
  • a device has the feature that the length of the film arranged round the product is longer than the dimension of the at least one product in the direction of displacement of the grippers along the product.
  • less packaging material can still be required than in the known art, and even considerably less material, particularly when the defined measure relates to a situation where the film is stretched in said direction and is not allowed to return to a shorter state.
  • the device has the further feature that the moving means are adapted to move the grippers over a greater distance than the dimension of the at least one product in the direction of displacement of the grippers along the product. A shorter length of film can then be utilized to cover and package more than the length of the at least one product in said direction.
  • Yet another embodiment of a device according to the invention can comprise at least four grippers positioned diametrically opposite each other. Optimally distributed stretching forces can thus be exerted on the film by the grippers.
  • a device with at least one conveyor, in particular a belt can have the further feature that the conveyor, or in particular belt, of the gripper is based on vacuum and/or is a vacuum conveyor which can at least be connected to a vacuum source, such as a pump, in order to enable a suction force to be exerted on the film. Using such a suction force an even more controlled or at least controllable release of film can be realized.
  • a vacuum source such as a pump
  • the invention thus relates to a device based on a new method, wherein stretch film is arranged on or round a single unit or product or a set of individual units placed together to form a stack.
  • the stretch film in tubular form is stretched in radial direction as well as in longitudinal direction of the displacing means .
  • the novelty is that the film is stretched in a controlled manner in the longitudinal direction.
  • a further feature is that the whole can form a secondary packaging round a set of units or products, where these may already be packed per se.
  • Fig. 1 shows an exploded view of main components and constituents of a device according to the invention in a starting situation; and each of the figures 2-9 shows a sequentially following situation of the device and the components thereof during packaging of a set of units which are per se already packed and form products .
  • the device according to the invention functions as follows.
  • the stretch film, which is rolled up as a flat tube (fig. 1) is opened (fig. 2) and then brought by means of vacuum conveyors to a specified length (fig. 3) . If desired ⁇ though this is not essential) , the film is sealed at the top and also severed so that a separate secondary packaging is created (fig. 4) .
  • the film is subsequently stretched radially by a diagonal movement of the vacuum conveyors in four directions (fig.
  • the film is then moved over a stack ⁇ fig. 6) .
  • the film is released via the vacuum conveyors with a controlled movement (fig. 7+8) .
  • the degree of stretch in the direction of movement is determined by the controlled release.
  • Figure 1 shows a selected number of parts and components of a device 1 according to the present invention.
  • Device 1 comprises a feed 2 in the form of a roll 3 with film 4 which can be unwound from roll 3 and then guided via guide rollers 5 to grippers 6.
  • Device 1 further serves for the purpose of packaging in tubular film 3 a set of boxes 7 as embodiment of units or products according to the invention. Boxes 7 are stacked in close-fitting manner in a stack 8 and have to be packaged in film. Stack 8 with boxes 7 has a length L, a width W and a height H.
  • Boxes 7 can contain random products, and in such a case the film can be deemed as a secondary packaging.
  • the invention is likewise applicable in circumstances wherein one, or more than one product must be packaged directly in film without primary packaging.
  • Film 4 on roll 3 is a tubular stretch film which is wound in flat state, i.e. as a flat tube, onto roll 3. As shown in figure 2, tubular film 4 is opened at grippers 6 and unrolled to a specified length. The film need not be sealed, although this is not precluded, and is severed or cut and optionally sealed at the desired specified length. Prior or subsequent thereto the film is unrolled round grippers 6.
  • Each of the grippers 6 comprises a belt 9 trained in an endless loop round two reversing wheels 10. At least one of the reversing wheels has a drive in the form of a motor 11, such as an electric motor, coupled for the purpose of setting into motion the associated reversing wheel 10, and thereby also belt 9. At least one of the grippers 6 in this way comprises a drive in the form of motor 11.
  • a motor 11 such as an electric motor
  • Figure 4 shows how the severed film 4 is arranged round belts 9 of grippers 6.
  • Film 4 is subsequently stretched radially as shown in figure 5 by a diagonal movement of grippers 6 with the conveyors formed by belts 9 in four directions, designated schematically with arrows D.
  • Grippers 6 are connected for this purpose to moving means for moving grippers 6 away from and toward each other in the directions designated with arrows D.
  • the moving means are stopped.
  • Displacing means then come into operation in order to displace grippers 6 with film 4 therearound over stack 8.
  • the film remains stretched in a controlled manner by means of grippers 6. In figure 6 an upper edge of the film 4 round the grippers reaches the top side of stack 8.
  • belts 9 continue moving in the direction of arrows F and the grippers can then continue to move in the direction of arrows E in for instance figure 6, and although such a further movement is not essential it is hereby possible to bring about with more certainty that a strip 12 of film 4 will be folded under stack 8 when the stretch therein is released, as indicated with arrows G in figure 9.
  • the grippers 6 can herein or hereafter be moved toward each other again by means of the moving means, as indicated with arrows H in figure 9.
  • the stack 8 can be place beforehand on a plate or tray. This can be co-packaged in the film.
  • the plate can also be provided under stack 8 later once stack 8 has been packaged in the film.
  • the invention preferably relates to a method and application for the use of stretch film as secondary packaging.
  • the above described embodiment of the invention relates to a device based on a method in an application wherein stretch film is arranged from a roll onto a set of individual units which have been placed together to form a stack or entity.
  • a single product optionally packaged in its own packaging can likewise be packaged in the film in a device according to the invention.
  • the stretch film is stretched in diagonal direction using the grippers.
  • the grippers can comprise random conveyors, although the use of (vacuum) conveyors has been found to produce a good grip of the grippers on the film. Unrolling of the unstretched film and subsequent release of the stretched film takes place by means of the same (vacuum) conveyors with the purpose of realizing a controlled stretch in longitudinal direction.
  • the stretch in radial direction is obtained by the diagonal movement of the (vacuum) conveyors in four directions. 6) The longitudinal stretch is obtained during the movement over the stack by controlled, consistent release of the film. 7) The stretch film is fixed on the underside by the diagonal movement of the vacuum conveyors inward and under the stack.

Landscapes

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

Abstract

La présente invention concerne un dispositif permettant d'envelopper au moins un produit, tel qu'une boîte, un produit emballé ou un produit tel quel tout simplement, ayant au moins trois angles, dans un film essentiellement tubulaire et étirable de manière élastique, comportant : des organes de préhension (6), dont l'un est disposé au niveau de chacun des angles du produit afin d'entrer ensemble en prise avec au moins un bord périphérique libre du film tubulaire ; des moyens d'avance qui coopèrent avec les organes de préhension (6) pour faire avancer les organes de préhension de manière sélective l'un vers les autres et l'un à distance des autres ; et des moyens de déplacement qui coopèrent avec les organes de préhension pour faire déplacer ceux-ci au moins le long du produit dans une position éloignée par rapport aux autres, pour ainsi disposer le film tubulaire autour du produit. Au moins l'un des organes de préhension (6) comporte également : un convoyeur ; et un entraînement pour le convoyeur, l'entraînement pour le convoyeur de l’organe de préhension éloignant le film des organes de préhension à une vitesse adaptée à une vitesse de déplacement des organes de préhension le long du produit et relâchant le film pour renfermer et entourer le produit. Le film peut ainsi être disposé autour d'au moins un produit (ou une pile de produits) plus facilement et avec une économie de matière.
PCT/NL2009/050214 2008-04-23 2009-04-22 Dispositif permettant d’emballer des produits WO2009131449A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1035332 2008-04-23
NL1035332A NL1035332C2 (nl) 2008-04-23 2008-04-23 Methode en toepassing voor het gebruik van rekfolie als secundaire verpakking.

Publications (1)

Publication Number Publication Date
WO2009131449A1 true WO2009131449A1 (fr) 2009-10-29

Family

ID=40834483

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2009/050214 WO2009131449A1 (fr) 2008-04-23 2009-04-22 Dispositif permettant d’emballer des produits

Country Status (2)

Country Link
NL (1) NL1035332C2 (fr)
WO (1) WO2009131449A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075451A1 (de) * 2011-05-06 2012-11-08 Illinois Tool Works Inc. Verfahren und Vorrichtung zum Aufreffen eines Schlauchfolienabschnitts auf die Refffinger einer Verpackungsanlage
WO2022249521A1 (fr) * 2021-05-27 2022-12-01 日立グローバルライフソリューションズ株式会社 Réfrigérateur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961459A (en) * 1974-04-16 1976-06-08 Bemis Company, Inc. Method of and apparatus for wrapping a load in a wrapper of stretchable material
US4454705A (en) * 1981-03-06 1984-06-19 Benno Edward L Packaging method
DE9001321U1 (fr) * 1990-02-06 1990-04-12 Develog, Reiner Hannen & Cie, Corgemont, Ch
EP1059233A1 (fr) * 1999-04-16 2000-12-13 Kl- Lachenmeier A/S Procédé et dispositif pour emballer des objets dans une housse en feuille
FR2893005A1 (fr) * 2005-11-10 2007-05-11 Thimon Sa Procede et machine de preparation et de depose d'un manchon d'emballage sur une charge palettisee.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1814742A1 (de) * 1968-12-14 1970-07-09 Intra Maschb Und Handels Gmbh Maschine zum fortlaufenden UEberzichen von Verpackungsgut
FR2316127A1 (fr) * 1975-07-04 1977-01-28 Hurdequint Louis Procede de suremballage d'un fardeau par une gaine etirable, et dispositif de mise en oeuvre du procede
US4050219A (en) * 1976-02-19 1977-09-27 Comptex, Inc. Bagging machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961459A (en) * 1974-04-16 1976-06-08 Bemis Company, Inc. Method of and apparatus for wrapping a load in a wrapper of stretchable material
US4454705A (en) * 1981-03-06 1984-06-19 Benno Edward L Packaging method
DE9001321U1 (fr) * 1990-02-06 1990-04-12 Develog, Reiner Hannen & Cie, Corgemont, Ch
EP1059233A1 (fr) * 1999-04-16 2000-12-13 Kl- Lachenmeier A/S Procédé et dispositif pour emballer des objets dans une housse en feuille
FR2893005A1 (fr) * 2005-11-10 2007-05-11 Thimon Sa Procede et machine de preparation et de depose d'un manchon d'emballage sur une charge palettisee.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075451A1 (de) * 2011-05-06 2012-11-08 Illinois Tool Works Inc. Verfahren und Vorrichtung zum Aufreffen eines Schlauchfolienabschnitts auf die Refffinger einer Verpackungsanlage
DE102011075451B4 (de) * 2011-05-06 2014-05-08 Illinois Tool Works Inc. Verfahren und Vorrichtung zum Aufreffen eines Schlauchfolienabschnitts auf die Refffinger einer Verpackungsanlage
US11273935B2 (en) 2011-05-06 2022-03-15 Signode Industrial Group Llc Reefing under stretch
WO2022249521A1 (fr) * 2021-05-27 2022-12-01 日立グローバルライフソリューションズ株式会社 Réfrigérateur

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