EP2394809A1 - Verpackungsmaschine für die Bildung von Umschläge - Google Patents

Verpackungsmaschine für die Bildung von Umschläge Download PDF

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Publication number
EP2394809A1
EP2394809A1 EP11169171A EP11169171A EP2394809A1 EP 2394809 A1 EP2394809 A1 EP 2394809A1 EP 11169171 A EP11169171 A EP 11169171A EP 11169171 A EP11169171 A EP 11169171A EP 2394809 A1 EP2394809 A1 EP 2394809A1
Authority
EP
European Patent Office
Prior art keywords
envelope
sheet
flexible film
internal container
packaging machine
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Withdrawn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
EP11169171A
Other languages
English (en)
French (fr)
Inventor
Andrea Zuccheri
Selenio Tuspi
Alessio Primavera
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.)
Ilapak International SA
Original Assignee
Ilapak International SA
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 Ilapak International SA filed Critical Ilapak International SA
Publication of EP2394809A1 publication Critical patent/EP2394809A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
    • B31B2120/408—Construction of rigid or semi-rigid containers lined or internally reinforced by folding a sheet or blank around an inner tubular liner

Definitions

  • the present invention refers to a packaging machine for forming envelopes, in particular envelopes made up of a rigid wrapping to which a coating of flexible thermoplastic material is internally applied.
  • Packaging machines are known that are intended to form and fill envelopes, from a film made from flexible thermoplastic material, in which the product is introduced by falling vertically. Such machines are in fact named “vertical packaging machines”.
  • the forming box has a profile with an extension that is suitably designed to wrap the film around the forming cylinder and to make the film itself slide on it.
  • the tube of film is pulled along by mechanical elements called traction belts, usually operating through friction.
  • traction belts usually operating through friction.
  • a horizontal welding unit called jaw or welding clamp.
  • the welding clamp has an opening and closing movement around the tube of film. When it is open, the welding clamp allows both the tube of film to advance downwards by a distance equal to the length of the envelope that is desired to be obtained, and allows the product that passes through the tube to reach the bottom of the tube itself.
  • the gun closes and welds the tube of film above the product, definitively closing the envelope.
  • a blade cuts the tube of film and lets the finished envelope, filled and closed, fall into the underlying area.
  • the film In the vertical packaging machine the film is unwound and is made to advance with an intermittent motion. When the welding clamp closes, welds and cuts the film, the latter remains still. When the welding clamp is open, the film is, on the other hand, made to advance by a distance equal to the final height of the envelope that is desired to be obtained.
  • thermo-weldable film which forms the envelopes is taken out from a reel usually arranged in the rear part of the packaging machine.
  • the reel When the reel is unwound, the film passes through a series of idle rolls until it reaches the aforementioned forming cylinder.
  • the operation of unwinding the film from the relative reel is carried out with the traction belts arranged around the tube.
  • the shaft holding the reel can in turn be motorised.
  • envelopes made up of two distinct layers joined to one another have recently been introduced on the market.
  • Such envelopes indeed comprise a first internal layer in flexible and thermoplastic material (film), having the function of containing the product (snacks, biscuits, lollies, soups, etc.).
  • the internal layer is sealed, once it has been filled with the product, so as to ensure the closure and the sealing for conserving the product itself.
  • the internal layer is thus made in the same manner as a typical pillow bag with a longitudinal welding and two transverse weldings, through a forming tube with forming box and by unwinding the film from a reel in a vertical packaging machine of the type described above.
  • Multi-layer envelopes thus comprise an outer part characterised by a rigid wrapping or "sleeve", glued or welded to the internal layer in flexible and thermoplastic material.
  • the external wrapping has some longitudinal pre-cut lines which promote its folding so that, by pressing the outer corners, it can open and give the end envelope a shape like that of a tin can. This allows the envelope to remain rigidly upright once it has been opened and, at the same time, it allows it to take up minimal space on the shelf when it is closed.
  • An envelope of the type comprising an internal layer, made of a flexible film realized with a plastic thermo-weldable material, and an external wrapping, made of a rigid sheet material, constrainable to such an internal layer, is described for example in document EP 0 533 648 A1 .
  • Document EP 0 533 648 A1 moreover illustrates a method for forming such an envelope.
  • the purpose of the present invention is therefore that of making a packaging machine for forming envelopes that is capable of applying a wrapping or "sleeve" made from rigid material, for example cardboard, rigid plastic film, metal foil, etc., on to a classic envelope made from flexible thermoplastic material.
  • the rigid wrapping can be applied to the film through glue or adhesive, and through thermo-welding for thermoplastic materials, as well as through other welding technologies.
  • This purpose according to the present invention is achieved by making a packaging machine for forming envelopes as outlined in claim 1.
  • a production line of envelopes comprising a packaging machine for forming envelopes according to the invention.
  • the packaging machine of the so called “vertical” type, is wholly indicated with reference numeral 10.
  • the production line is provided with a plurality of distinct stations or modules, arranged in sequence with respect to one another, which make it possible to form, fill and seal the envelopes P.
  • the production line firstly comprises a unit 12 for loading sheets S of rigid material, which go to form the external wrapping or "sleeve" of the single envelopes P.
  • the sheets S of rigid material in a phase prior to being introduced onto the loading unit 12, are conveniently provided with pre-cut lines that promote the subsequent folding, as shall be specified in the rest of the description.
  • the sheets S of rigid material can be provided with pre-cut lines in a suitable work station (not shown) of the production line, operatively connected to the loading unit 12.
  • the sheets S of rigid material once they have been suitably spread, are loaded from the top into the loading unit 12.
  • a device 14 for taking out and conveying the sheets S takes them out one at a time, loading them onto a horizontal conveyor belt 16.
  • Such a conveyor belt 16 by using suitable perforated belts, holds and transfers, through vacuum technology, the sheets S to the subsequent module, that is to say to the vertical packaging machine 10.
  • the conveyor belt 16 advances with intermittent linear motion.
  • a gluing device 18 which can operate when each sheet S is applied to the internal portion of the envelope through gluing.
  • the gluing device 18 is capable of applying an adhesive material on the back of the sheet S that forms the wrapping of the envelope P, which is still and in a spread position. The adhesive material then coincides with the internal layer of the envelope P in those points on which it has been decided to make the sheet S and the internal layer of the envelope P itself stick to one another.
  • the vertical packaging machine 10 comprises, in a per se known manner, a feeding unit 20 of a flexible film realized with a plastic thermo-weldable material. Such a film will form the internal layer of the envelope P, that is to say the layer for containing the product.
  • the film is taken from a reel 22 arranged at the rear part of the packaging machine 10. When the reel 22 is unwound, the film passes through a series of idle rolls until it reaches a substantially vertical forming cylinder 24, around which the film itself wraps until it assumes a tubular shape.
  • a first vertical welding unit indeed provides for welding, in the vertical direction, the outer edges of the film that are placed over one another, so as to form a tube of film.
  • the tube of film is pushed vertically downwards by a pair of lateral motorised belts 26 and 28, arranged outside with respect to the forming cylinder 24 and acting through friction on its circumferential surface, and by a linear pusher 30, arranged inside the forming cylinder 24 itself.
  • a second horizontal welding unit 32, or jaw able to close the lower end of the tube of film through heat-welding.
  • the jaw 32 in addition to welding the tube of film on the lower side, also mounts a semicircular-shaped blade 34, intended both for forming the bottom of the tube of film after the horizontal welding, and for cutting the lower portion of the tube of film itself, so as to obtain the internal layer of the envelope P.
  • a semicircular-shaped blade 34 intended both for forming the bottom of the tube of film after the horizontal welding, and for cutting the lower portion of the tube of film itself, so as to obtain the internal layer of the envelope P.
  • Such an internal layer of the envelope P is thus welded on the lower side and open on the upper side, so as to form an internal container for the envelope P itself.
  • the linear pusher 30 provides for positioning the internal container of the envelope P thus formed in front of an applying and overturning unit 36, arranged on the packaging machine 10 below the jaw 32 and downstream of the gluing device 18, when present.
  • the linear pusher 30 is conveniently provided with a lower flat-shaped tapered end 38, thus allowing the smallest possible amount of space to be taken up inside the internal container of the envelope P and facilitating the operations of introduction and sliding out from such internal container of the envelope P.
  • the applying and overturning unit 36 firstly has the function of taking out each sheet S of rigid material, arriving at a spread position from the loading unit 12 and with the glue already applied (when present), and of overturning it according to an angle of approximately 90°, arranging it around the internal container of the envelope P.
  • the applying and overturning unit 36 is provided with a resting plate 40 for each sheet S, actuated by a control actuator 48 to move from a substantially horizontal position ( figure 5 ), or position for taking out each sheet S from the loading unit 12, to a substantially vertical position ( figure 4 ), or position for applying the sheet S itself around the internal container of the envelope P.
  • the sheet S being now in the vertical position, is pressed by the plate 40 of the applying and overturning unit 36 against the internal container of the envelope P, also kept tight, allowing the glue to join together the two layers, outer and inner, of the envelope P itself.
  • the envelope P by effect of the pressure of the plate 40, does not move since the linear pusher 30 is still inserted inside it and keeps it rigidly still.
  • a pair of movable fins or "hands" 42 and 44 ( figures 3 and 4 ), arranged laterally with respect to the plate 40 of the applying and overturning unit 36 and actuated by an independent control actuator 46, rotate of approximately 180° by making the two lateral edges of the wrapping S rest on the backside of the internal container of the envelope P.
  • This operation facilitated by the presence of the pre-cut lines on the wrapping S, makes it possible to completely wrap such a wrapping S around the internal container of the envelope P ( figure 3 ), so as to make the glue adhere even on the backside.
  • the wrapping S itself is moreover closed, making the two outermost edges stick one above the other, so as to definitively form the envelope P.
  • the production line of the envelopes P comprises, downstream of the vertical packaging machine 10, a transferring carousel 50 ( figure 6 ).
  • the transferring carousel 50 in turn comprises a horizontal rotary table 52 on which the newly formed envelopes P are deposited from the linear pusher 30 of the vertical packaging machine 10. Once the linear pusher 30 has been extracted from each envelope P, it is free to be transferred through the rotary table 52 and to be taken out by the rotary table 52 itself through taking out means 54 that can be either of the mechanical type, or of the vacuum technology type.
  • the horizontal rotary table 52 of the transferring carousel 50 moves with intermittent rotary motion, so as to position each preformed envelope P at other modules or subsequent stations of the production line.
  • a first station can foresee for example a store 56 for accumulating empty envelopes P. In such a manner it is possible to make lots of empty preformed envelopes P to be accumulated in the store 56 with the purpose of using them at a later moment or for other processes.
  • the transferring carousel 50 can transfer each single empty envelope P to a conveyor belt 58 on which one or more stations 60 are applied (only one of them is partially shown in figure 7 ) for filling or for loading the product inside each envelope P.
  • the conveyor belt 58 has a substantially horizontal projection and moves with alternate linear motion. It is made up of a main belt 62 on which a plurality of elements 64 for gripping the empty envelopes P are mounted, capable of accompanying such envelopes P, through the subsequent station 60 for loading the product, to the end welding station (described in the rest of the description).
  • Each gripping element 64 is equipped with a mechanical clamp ( figures 8-10 ) which opens and closes, grasping at the sides the preformed envelope P at the relative pre-cut lines. This opening and closing movement of the gripping element 64 has the function of both gripping and holding every envelope P, rigidly supporting them, and of opening the envelope P itself, in the subsequent phase, so as to allow the product to be inserted inside it.
  • the gripping element 64 is provided with two symmetrical holding arms 66 and 68, which move together thanks to a cam mechanism with a contrast spring 70. The cam is located in the rear part of each gripping element 64 and, during the phase of transferring along the conveyor belt 58, makes it possible to control the movements of gripping and releasing each envelope P.
  • a station 72 for the final closure or welding of the envelopes P ( figure 11 ).
  • the gripping element 64 releases the relative envelope P and, simultaneously, a mechanical heated jaw 74, belonging to the welding station 72, intervenes so as to weld and close the upper edge of the envelope P itself, that is to say the upper edge of its internal layer made from plastic thermo-weldable material.
  • two small mechanical "fingers" 76 and 78 actuated by an independent control, are introduced in the envelope P itself and keep its upper portion spread, still open, whereas the jaw 74 closes.
  • the jaw 74 is also equipped with a knife with a blade that eliminates the upper edge of the film which, in turn, can be removed by means of a suction device 80.
  • the blade has a straight shape, thus making it possible for the envelope P to have the upper edge closed and flat and have both the upper and lower edge with a conveniently straight shape.
  • the packaging machine for forming envelopes of the present invention thus conceived can, in any case, undergo numerous modifications and variants all covered by the same inventive concept; moreover, all the details can be replaced by technically equivalent elements.
  • the materials used, as well as the shapes and sizes, can be any according to the technical requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP11169171A 2010-06-09 2011-06-08 Verpackungsmaschine für die Bildung von Umschläge Withdrawn EP2394809A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI2010A001025A IT1400494B1 (it) 2010-06-09 2010-06-09 Macchina confezionatrice per la formazione di buste.

Publications (1)

Publication Number Publication Date
EP2394809A1 true EP2394809A1 (de) 2011-12-14

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EP11169171A Withdrawn EP2394809A1 (de) 2010-06-09 2011-06-08 Verpackungsmaschine für die Bildung von Umschläge

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EP (1) EP2394809A1 (de)
IT (1) IT1400494B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105905370A (zh) * 2016-06-17 2016-08-31 锐派包装技术（上海）有限公司 一种冷拉式套膜机
CN108555129A (zh) * 2018-06-05 2018-09-21 钜冠协创（深圳）科技有限公司 铝箔包边设备及系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533648A1 (de) 1991-09-20 1993-03-24 Fuji Photo Film Co., Ltd. Einwegbehälter für ein flüssiges Produkt und Verfahren zur Herstellung desselben

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533648A1 (de) 1991-09-20 1993-03-24 Fuji Photo Film Co., Ltd. Einwegbehälter für ein flüssiges Produkt und Verfahren zur Herstellung desselben

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105905370A (zh) * 2016-06-17 2016-08-31 锐派包装技术（上海）有限公司 一种冷拉式套膜机
CN108555129A (zh) * 2018-06-05 2018-09-21 钜冠协创（深圳）科技有限公司 铝箔包边设备及系统
CN108555129B (zh) * 2018-06-05 2024-05-24 钜冠协创（深圳）科技有限公司 铝箔包边设备及系统

Also Published As

Publication number Publication date
ITMI20101025A1 (it) 2011-12-10
IT1400494B1 (it) 2013-06-11

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