EP2874887B1 - Procédé d'emballage et machine pour produire un emballage étanche contenant un groupe d'articles de tabac - Google Patents

Procédé d'emballage et machine pour produire un emballage étanche contenant un groupe d'articles de tabac Download PDF

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Publication number
EP2874887B1
EP2874887B1 EP13767113.7A EP13767113A EP2874887B1 EP 2874887 B1 EP2874887 B1 EP 2874887B1 EP 13767113 A EP13767113 A EP 13767113A EP 2874887 B1 EP2874887 B1 EP 2874887B1
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EP
European Patent Office
Prior art keywords
packing
group
stiffener
tobacco articles
conveyor
Prior art date
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Application number
EP13767113.7A
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German (de)
English (en)
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EP2874887B2 (fr
EP2874887A1 (fr
Inventor
Gilberto Spirito
Stefano Negrini
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GD SpA
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GD SpA
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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
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/02—Packaging cigarettes
    • B65B19/025—Packaging cigarettes in webs of flexible sheet material
    • 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
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/02—Packaging cigarettes
    • B65B19/12—Inserting the cigarettes, or wrapped groups thereof, into preformed containers
    • 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
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/02—Packaging cigarettes
    • B65B19/12—Inserting the cigarettes, or wrapped groups thereof, into preformed containers
    • B65B19/20—Inserting the cigarettes, or wrapped groups thereof, into preformed containers into boxes with hinged lids
    • 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
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/02—Packaging cigarettes
    • B65B19/22—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers
    • B65B19/223—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers in a curved path; in a combination of straight and curved paths, e.g. on rotary tables or other endless conveyors
    • 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
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/02—Packaging cigarettes
    • B65B19/22—Wrapping the cigarettes; Packaging the cigarettes in containers formed by folding wrapping material around formers
    • B65B19/228—Preparing and feeding blanks
    • 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
    • B65B9/067—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 the web advancing continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/54—Cards, coupons, or other inserts or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles
    • B65D85/08—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles rod-shaped or tubular
    • B65D85/10—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles rod-shaped or tubular for cigarettes
    • B65D85/1018—Container formed by a flexible material, i.e. soft-packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles
    • B65D85/08—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles rod-shaped or tubular
    • B65D85/10—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles rod-shaped or tubular for cigarettes
    • B65D85/1036—Containers formed by erecting a rigid or semi-rigid blank
    • B65D85/1045—Containers formed by erecting a rigid or semi-rigid blank having a cap-like lid hinged to an edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing

Definitions

  • the present invention relates to a packing method and machine for producing a sealed package containing a group of tobacco articles.
  • Rigid, hinged-lid packets of cigarettes are currently the most widely marketed, by being easy to produce and easy and practical to use, and by effectively protecting the cigarettes inside.
  • a rigid, hinged-lid packet of cigarettes comprises an inner package comprising a foil-wrapped group of cigarettes; and a rigid outer container housing the inner package.
  • the outer container comprises a cup-shaped container housing the group of cigarettes and having an open top end; and a cup-shaped lid hinged to the container to rotate, with respect to the container, between an open position and a closed position opening and closing the open end respectively.
  • a sealed (i.e. airtight) package has recently been proposed comprising a cigarette extraction opening closed by an open-close sealing flap (the sealing flap is applied with non-dry, re-stick glue enabling it to be stuck repeatedly in the closed position closing the cigarette extraction opening).
  • Patent Application WO2011110272A1 describes a packing method for producing a sealed package containing a group of cigarettes. As a whole, the packing method described is substantially conventional, by causing the group of cigarettes to intercept a flat sheet of packing material, so that the sheet of packing material folds into a 'U' about the group of cigarettes.
  • Patent Application WO2011110272A1 proposes a further packing method for producing a sealed package containing a group of cigarettes.
  • This further method is based on the so-called 'flow-pack' method, in which a tubular wrapping is formed about a succession of groups of cigarettes by continuously and longitudinally heat-sealing a web of packing material folded into a tube; and the tubular wrapping is heat-sealed and cut transversely, upstream and downstream from each group of cigarettes, into individual sealed inner packages.
  • Patent Application WO9849072A1 describes a further packing method for producing a sealed package containing a group of cigarettes.
  • This further method is based on the so-called ⁇ flow-pack' method, in which a tubular wrapping is formed about a succession of groups of cigarettes by continuously and longitudinally heat-sealing a web of packing material folded into a tube; and the tubular wrapping is heat-sealed and cut transversely, upstream and downstream from each group of cigarettes, into individual sealed inner packages.
  • Each group of cigarettes, fitted with a stiffener is fed transversely along a packing path, i.e. with the longitudinal axes of the cigarettes perpendicular to the packing path and to the longitudinal heat-seal, and parallel to the transverse heat-seals.
  • Number 1 in Figures 1, 2 and 3 indicates as a whole a rigid packet of cigarettes.
  • Packet 1 of cigarettes comprises a cup-shaped outer container 2, which is made of cardboard, has a hinged lid, and houses a sealed package 3 ( Figure 2 ).
  • Sealed package 3 encloses a parallelepiped-shaped group 4 of cigarettes ( Figure 5 ) and, at the top and front, has a central cigarette extraction opening 5 extending over part of a front wall and part of a top wall of sealed package 3.
  • the cigarettes in group 4 are cylindrical with a longitudinal axis.
  • Sealed package 3 comprises a reclosable (i.e. 'open-close') sealing flap (i.e.
  • sealing panel 6 designed to seal extraction opening 5 and coated on the underside with non-dry, re-stick glue (i.e. non-dry glue allowing the sealing flap to be detached and re-attached repeatedly). That is, sealing flap 6 normally adheres to sealed package 3 to seal extraction opening 5, and can be detached temporarily from sealed package 3 to free, and so withdraw a cigarette through, extraction opening 5.
  • sealing flap 6 is applied externally to the packing material of sealed package 3.
  • sealing flap 6 is either formed in two-layer packing material of sealed package 3, or is in the form of a frame applied to the inside of the packing material of sealed package 3.
  • sealing flap 6 has a grip tab 7 with no re-stick adhesive and located close to, normally beneath, extraction opening 5.
  • sealed package 3 comprises a U-shaped stiffener (i.e. tray) 8 made of cardboard (identical to that of outer container 2) and which is inserted inside sealed package 3, contacting group 4 of cigarettes.
  • Stiffener 8 comprises a front wall 9 positioned contacting the cylindrical lateral walls of the cigarettes in group 4; two lateral walls 10 on opposite sides of front wall 9 and positioned contacting the cylindrical lateral walls of the cigarettes in group 4; and a bottom wall 11 positioned contacting the tips of the cigarettes in group 4.
  • Front wall 9 preferably has a top recess 12 located at cigarette extraction opening 5, so that front wall 9 does not overlap cigarette extraction opening 5.
  • Each lateral wall 10 comprises a lateral tab 13, which is folded 90° with respect to lateral wall 10 onto bottom wall 11.
  • Bottom wall 11 comprises a bottom tab 14, which is folded 180° with respect to and onto bottom wall 11; and bottom tab 14 comprises an appendix 15, which is folded 90° with respect to bottom tab 14 onto front wall 9.
  • Stiffener 8 has no glue, and comprises a jointing system to hold bottom wall 11 and lateral walls 10 in position.
  • the jointing system comprises a U-shaped through slit 16 formed through front wall 9, along the fold line between front wall 9 and bottom wall 11; and a U-shaped projection 17 formed on bottom tab 14, along the fold line between bottom tab 14 and appendix 15.
  • Projection 17 on bottom tab 14 is inserted through slit 16 in front wall 9 (by elastically deforming projection 17) to form a joint, between projection 17 and through slit 16, which holds bottom wall 11 and lateral walls 10 in position, by requiring significant deformation for its release.
  • Through slit 16 is formed by making a U-shaped cut through front wall 9, along the fold line between front wall 9 and bottom wall 11.
  • projection 17 is formed by making a U-shaped cut through appendix 15, along the fold line between appendix 15 and bottom tab 14.
  • stiffener 8 serves to reinforce and maintain the shape of sealed package 3, to prevent sealed package 3 from collapsing, when some of the cigarettes are removed, and so complicating withdrawal of the remaining cigarettes and, in particular, opening and closing of sealing flap 6.
  • stiffener 8 serves to hold the cigarettes in group 4 together in the right position.
  • Figure 9 shows a blank 18, which is folded to form the stiffener 8 in Figures 6 , 7 and 8.
  • Figure 8 clearly shows the cuts defining through slit 16 and projection 17.
  • Figure 10 shows a variation of the Figure 9 blank 18.
  • the Figure 10 blank 18 differs from the Figure 9 blank 18 by comprising a ⁇ logo', which is visible in positive form at top recess 12 (i.e. at the part of stiffener 8 visible through extraction opening 5 of sealed package 3), and in negative form at bottom tab 14 and appendix 15 (in this way, the Figure 10 blank 18 can be formed from a continuous web of cardboard with no waste).
  • Figures 11 and 12 show an alternative embodiment of the Figure 6 , 7 and 8 stiffener 8, which differs from the Figure 6 , 7 and 8 stiffener 8 by comprising an appendix 15 reduced to a minimum in size.
  • Figures 13 and 14 show an alternative embodiment of the Figure 6 , 7 and 8 stiffener 8, which is formed from the blank 18 shown in Figure 15 , and which differs from the Figure 6 , 7 and 8 stiffener 8 by having no appendix 15, and by the tip of bottom tab 14 being inserted (by elastically deforming bottom tab 14) through slit 16 to form a joint between bottom tab 14 and through slit 16.
  • Figures 16 and 17 show an alternative embodiment of the Figure 6 , 7 and 8 stiffener 8, which is formed from the blank 18 shown in Figure 18 , and which differs from the Figure 6 , 7 and 8 stiffener 8 by having no through slit 16 and no projection 17, and by front wall 9 having a through cut 19 (typically inverted-U-shaped) through which appendix 15 is fitted (by elastically deforming through cut 19).
  • the jointing system comprises the inverted-U-shaped through cut 19 in front wall 9; and appendix 15 on bottom tab 14, which is folded 90° with respect to bottom tab 14 onto front wall 9, at and to fit inside through cut 19.
  • Figure 19 shows a variation of the Figure 18 blank 18, which differs from the Figure 18 blank 18 by comprising a ⁇ logo', which is visible in positive form at top recess 12 (i.e. at the part of stiffener 8 visible through extraction opening 5 of sealed package 3), and in negative form at bottom tab 14 and appendix 15 (in this way, the Figure 19 blank 18 can be formed from a continuous web of cardboard with no waste).
  • Figures 20, 21 and 22 show an alternative embodiment of the Figure 6 , 7 and 8 stiffener 8, which is formed from the blank 18 shown in Figure 23 , and which differs from the Figure 6 , 7 and 8 stiffener 8 by having no appendix 15, no through slit 16, and no projection 17, and by lateral tabs 13 having cuts 20 into which bottom tab 14 fits (by elastically deforming lateral tabs 13).
  • Figures 24 , 25 and 26 show three alternative embodiments of the Figure 9 blank 18, which differ from the Figure 9 blank 18 by having no bottom tab 14, no appendix 15, no through slit 16, and no projection 17; by lateral tabs 13 having cuts 20; and by bottom wall 11 having two cuts 21.
  • lateral tabs 13 When lateral tabs 13 are superimposed on bottom wall 11, each cut 20 fits inside a corresponding cut 21 (by elastically deforming relative lateral tab 13).
  • Figure 27 shows an alternative embodiment of the Figure 6 , 7 and 8 stiffener 8, which differs from the Figure 6 , 7 and 8 stiffener 8 by having no bottom tab 14, no appendix 15, no through slit 16, and no projection 17, and by bottom wall 11 having two cuts 21.
  • lateral tabs 13 are superimposed on bottom wall 11, the tip of each lateral tab 13 deforms elastically to fit inside a corresponding cut 21.
  • Figure 28 shows an alternative embodiment of the Figure 6 , 7 and 8 stiffener 8, which differs from the Figure 6 , 7 and 8 stiffener 8 by having no bottom tab 14, no appendix 15, no through slit 16, and no projection 17; by the two lateral tabs 13 being connected to opposite ends of bottom wall 11, and being folded 90° with respect to bottom wall 11 onto lateral walls 10; and by each lateral wall 10 comprising a lateral wing 22, which is folded 180° with respect to and onto lateral wall 10 to enclose a corresponding lateral tab 13.
  • Each lateral wing 22 has two projections 23, which (by deforming elastically) fit through corresponding through slits 24 in front wall 9 to form a joint between projections 23 and through slits 24.
  • Figures 29 and 30 show an alternative embodiment of the Figure 6 , 7 and 8 stiffener 8, which differs from the Figure 6 , 7 and 8 stiffener 8 by having no appendix 15, no through slit 16, and no projection 17; and by bottom tab 14 being folded 90° with respect to bottom wall 11.
  • Figure 31 shows an alternative embodiment of the Figure 9 blank 18, which differs from the Figure 9 blank 18 by having no bottom tab 14, no appendix 15, no through slit 16, and no projection 17; and by each lateral tab 13 being glued by glue 25 to bottom wall 11.
  • stiffener 8 has no glue, and comprises a jointing system to hold bottom wall 11 and lateral walls 10 in position; whereas, in the Figure 31 embodiment, stiffener 8 has no jointing system, but has two areas of glue 25 to hold bottom wall 11 and lateral walls 10 in position.
  • the two lateral tabs 13 are connected to opposite ends of bottom wall 11, are folded 90° with respect to bottom wall 11 onto lateral walls 10, and are glued by glue 25 to lateral walls 10.
  • stiffener 8 chooses which of the above embodiments of stiffener 8 to employ depends on the relationship between the thickness of group 4 of cigarettes (and therefore the size of bottom wall 11 of stiffener 8) and the size of recess 12 (which, to avoid waste, also affects the shape and size of bottom tab 14 and appendix 15) .
  • Number 26 in Figure 32 indicates as a whole a packing machine for producing packet 1 of cigarettes in Figures 1, 2 and 3 .
  • Packing machine 26 comprises a packing section 27 for producing sealed packages 3; and a follow-up packing section 28 for producing outer containers 2 by folding rigid blanks 29 about the sealed packages 3 from packing section 27.
  • packing section 27 comprises a forming unit 30 for producing groups 4 of cigarettes, and for producing stiffeners 8 by folding blanks 18; a coupling unit 31 for fitting groups 4 of cigarettes with respective stiffeners 8; and a packing unit 32 for producing sealed packages 3 by folding and heat-sealing a strip 33 of packing material (complete with extraction openings 5 and superimposed sealing flaps 6) about groups 4 of cigarettes fitted with respective stiffeners 8.
  • Forming unit 30 comprises a hopper 34 with four outlets; and a forming belt conveyor 35 supporting a number of forming pockets 36.
  • Forming conveyor 35 feeds each forming pocket 36 from an input station 37, located in front of an outlet of hopper 34 and where a group 4 of cigarettes is expelled from the outlet of hopper 34 into forming pocket 36, to an output station 38 where the group 4 of cigarettes is expelled from forming pocket 36.
  • Forming unit 30 also comprises a folding belt conveyor 39 supporting a number of folding pockets (not shown) and extending parallel to and alongside forming conveyor 35.
  • Folding conveyor 39 feeds each folding pocket from an input station 40, where a blank 18 is fed into the folding pocket; through a number of folding stations, where blank 18 is folded (completely or partly) to form a stiffener 8; and to an output station 41, where the stiffener 8 is expelled from the folding pocket.
  • coupling unit 31 comprises a coupling conveyor 42, which is positioned perpendicular to forming conveyor 35 and folding conveyor 39, picks up each group 4 of cigarettes at output station 38 of forming conveyor 35, couples group 4 of cigarettes with a corresponding stiffener 8 at a coupling station 43 (located over and aligned vertically with output station 41 of folding conveyor 39), and feeds group 4 of cigarettes, fitted with stiffener 8, to an input station 44 of packing unit 32.
  • Coupling conveyor 42 comprises an endless belt 45 fitted with a number of paddles 46, which push groups 4 of cigarettes along a slide surface 47 connecting output station 38 of forming conveyor 35 to input station 44 of packing unit 32.
  • Slide surface 47 is static (i.e. mounted in a fixed position) and is connected to an elevator 47a movable vertically between a bottom position ( Figure 38 ), in which elevator 47a is located at output station 41 of folding conveyor 39, and a top position (not shown in Figure 38 ), in which elevator 47a is located at coupling station 43.
  • Slide surface 47 has a through opening, through which a stiffener 8 is raised by elevator 47a.
  • elevator 47a is moved into the bottom position to pick up a stiffener 8, and is then raised to feed stiffener 8 into coupling station 43, where stiffener 8 intercepts and couples with a corresponding group 4 of cigarettes (i.e.
  • group 4 of cigarettes impacts bottom wall 11 of stiffener 8, thus drawing stiffener 8 along with it).
  • the end of slide surface 47 around the through opening is designed to finish folding bottom tab 14 and appendix 15 as stiffener 8 is pushed up by elevator 47a.
  • packing unit 32 comprises a packing conveyor 48, which feeds each group 4 of cigarettes (fitted with respective stiffener 8) along a straight packing path P.
  • a fixed folding device 49 (shown schematically in Figure 35 ) winds strip 33 of packing material longitudinally, i.e. parallel to packing path P, about packing path P to bring the two opposite edges of strip 33 of packing material into contact and so form a tubular wrapping enclosing groups 4 of tobacco articles (fitted with respective stiffeners 8).
  • Packing unit 32 also comprises a heat-sealing device 50 (shown schematically in Figures 35 and 40 ) located downstream from folding device 49, and which heat-seals the two opposite overlapping edges of strip 33 of packing material longitudinally, i.e.
  • Packing unit 32 also comprises a heat-sealing device 51 (shown schematically in Figures 35 and 40 ) located downstream from heat-sealing device 50, and which heat-seals and cuts the tubular wrapping transversely, i.e. perpendicularly to packing path P, upstream and downstream from each group 4 of cigarettes (fitted with respective stiffener 8), to complete sealed packages 3.
  • a heat-sealing device 51 shown schematically in Figures 35 and 40 ) located downstream from heat-sealing device 50, and which heat-seals and cuts the tubular wrapping transversely, i.e. perpendicularly to packing path P, upstream and downstream from each group 4 of cigarettes (fitted with respective stiffener 8), to complete sealed packages 3.
  • packing conveyor 48 feeds each group 4 of cigarettes (fitted with respective stiffener 8) transversely along packing path P, i.e. with the longitudinal axes of the cigarettes perpendicular to packing path P and to the longitudinal heat-seal, and parallel to the transverse heat-seals. Feeding groups 4 of cigarettes along the packing path in this way is extremely important, by enabling the formation of sealed packages 3 with the transverse heat-seals along the lateral walls, and with no heat-seals at all on the bottom wall and, more importantly, on the top wall in which extraction opening 5 is formed.
  • strip 33 of packing material is already complete with extraction openings 5 covered with open-close sealing flaps 6, which are formed and applied respectively at work stations (not shown) upstream from packing unit 32.
  • extraction openings 5 covered with open-close sealing flaps 6 are located on the opposite side of the tubular wrapping to the longitudinal heat-seal, and are centred between the two transverse heat-seals.
  • extraction openings 5 covered with open-close sealing flaps 6 may be located on the same side as the longitudinal heat-seal and, as opposed to being centred, may be more or less asymmetrical in shape and/or position.
  • packing conveyor 48 comprises a static (i.e. stationary) slide surface 52, along which each group 4 of cigarettes slides, and about which strip 33 of packing material is wound; and a push device 53 located over groups 4 of cigarettes, and which pushes each group 4 of cigarettes along packing path P.
  • Push device 53 comprises a conveyor belt 54, which is located over each group 4 of cigarettes, extends parallel to packing path P, presses each group 4 of cigarettes against slide surface 52, and comprises paddles 55, which project from conveyor belt 54 and are positioned upstream and downstream from, to define a seat for, each group 4 of cigarettes.
  • packing unit 32 comprises a feed conveyor 56, which receives groups 4 of cigarettes from coupling conveyor 42 at input station 44, and feeds groups 4 of cigarettes onto slide surface 52.
  • Feed conveyor 56 comprises two parallel, side by side conveyor belts 57 located beneath groups 4 of cigarettes, and on which groups 4 of cigarettes rest.
  • Each conveyor belt 57 comprises paddles 58, which project from conveyor belt 57 and are positioned upstream and downstream from, to define a seat for, each group 4 of cigarettes.
  • packing unit 32 comprises two conveyor belts 59 positioned facing each other on opposite sides of packing path P, directly upstream from heat-sealing device 50.
  • the two conveyor belts 59 press on opposite sides of the tubular wrapping to compress the two opposite longitudinal edges of the tubular wrapping transversely (i.e. the two conveyor belts 59 press on the longitudinally oriented bottom wall and top wall of each sealed package 3 in the making).
  • longitudinally heat-sealing by means of heat-sealing device 50 the two opposite overlapping edges of strip 33 of packing material to stabilize the tubular wrapping produces a longitudinal fin 60, which initially projects perpendicularly from the tubular wrapping.
  • heat-sealing device 50 forming the longitudinal heat-seal is connected to a folding device, which folds the longitudinal fin 60 ninety degrees and presses it onto the tubular wrapping.
  • each transverse heat-seal (by heat-sealing device 51) on the tubular wrapping produces a transverse fin 61, which initially projects perpendicularly from (i.e. from a lateral wall of) the corresponding sealed package 3.
  • a folding device downstream from heat-sealing device 51 folds each transverse fin 61 ninety degrees and presses it onto the corresponding sealed package 3 (i.e. onto a lateral wall of the corresponding sealed package 3).
  • Each transverse fin 61 is preferably fixed (heat-sealed or glued) to the corresponding sealed package 3 (i.e. to a lateral wall of the corresponding sealed package 3) so that it remains permanently contacting sealed package 3.
  • each transverse fin 61 must be fixed to remain permanently contacting the corresponding sealed package 3
  • the transverse heat-seals provide for holding the longitudinal fin 60 permanently contacting the corresponding sealed package 3.
  • Figures 4b and 4c show a sealed package 3 prior to folding (fixing) the two transverse fins 61, and Figure 4a a sealed package 3 after the two transverse fins 61 are folded (fixed).
  • each group 4 of cigarettes is formed on forming conveyor 35 independently and separately from the corresponding stiffener 8; each stiffener 8 is folded on folding conveyor 39 independently and separately from formation of the corresponding group 4 of cigarettes; and each pre-formed group 4 of cigarettes is coupled on coupling conveyor 42 with the corresponding pre-folded stiffener 8.
  • forming conveyor 35 for forming groups 4 of cigarettes extends parallel to and alongside folding conveyor 38 for folding stiffeners 8; whereas coupling conveyor 42, on which each pre-formed group 4 of cigarettes is coupled with the corresponding pre-folded stiffener 8, is perpendicular to forming conveyor 35 and folding conveyor 38.
  • each stiffener 8 is fed into a forming pocket 36 on forming conveyor 35, upstream from hopper 34; and each group 4 of cigarettes is transferred from hopper 34 into forming pocket 36 (containing stiffener 8) and directly into stiffener 8.
  • folding conveyor 39 for folding stiffeners 8 is located upstream from forming conveyor 35 to feed stiffeners 8, already folded, to the start of forming conveyor 35.
  • Figures 41-43 show a simplified stiffener 8 with only front wall 9 and lateral walls 10 (i.e. with no bottom wall 11). Though, clearly, stiffener 8 in the Figure 41-43 embodiment may also be as described with reference to Figures 6-31 .
  • packing unit 32 comprises a processing device for extracting air (by suction) from the tubular wrapping to form vacuum-sealed packages 3.
  • the processing device also injects inert gas to form controlled-atmosphere sealed packages 3.
  • the sealed package production process may therefore comprise a step of extracting air from the tubular wrapping to form vacuum-sealed packages, and/or a step of injecting inert gas into the tubular wrapping to form controlled-atmosphere sealed packages.
  • packing machine 26 only comprises packing section 27 for producing sealed packages 3, which are marketed as they are, without outer containers 2 (i.e. each packet 1 of cigarettes only comprises sealed package 3, and has no outer container 2); or else a further packing machine (separate from and fully independent of packing machine 26) receives sealed packages 3 from packing machine 26, and forms outer containers 2 about sealed packages 3.
  • each sealed package 3 having the transverse heat-seals (i.e. transverse fins 61) along the lateral walls, and no heat-seals at all on the bottom wall and, more importantly, on the top wall in which extraction opening 5 is formed.
  • the packing method and machine 26 described provide for 'flow-pack' producing sealed packages 3 with perfectly formed groups 4 of cigarettes, i.e. in which the cigarettes are positioned correctly as shown in Figure 5 .
  • packing conveyor 48 On packing conveyor 48, on which each group 4 of cigarettes travels transversely (i.e. with the longitudinal axes of the cigarettes perpendicular to packing path P), the danger of group 4 of cigarettes falling out of shape, i.e. of the cigarettes in group 4 shifting out of position, is averted by the combined action of stiffener 8, which defines a 'box' for containing and retaining group 4 of cigarettes, and of packing conveyor 48, which maintains sufficient transverse and longitudinal pressure on stiffener 8 (and therefore on group 4 of cigarettes inside stiffener 8).
  • stiffener 8 (and therefore group 4 of cigarettes inside stiffener 8) is compressed longitudinally by paddles 55 of push device 53, which define a seat for group 4 of cigarettes; and stiffener 8 (and therefore group 4 of cigarettes inside stiffener 8) is compressed transversely by the two conveyor belts 59.
  • stiffener 8 comprises a system for connecting bottom wall 11 to lateral walls 10, and for preventing bottom wall 11 from moving with respect to lateral walls 10 (or, conversely, preventing lateral walls 10 from moving with respect to bottom wall 11).
  • This connecting system in fact, increases the rigidity of stiffener 8 and so further prevents unwanted movements of the cigarettes in group 4, particularly when forming the tubular wrapping.
  • the system connecting bottom wall 11 and lateral walls 10 has no glue, thus eliminating any glue inside sealed package 3, and the possibility of the substances in the glue somehow altering the taste and/or aroma of the tobacco in the cigarettes.
  • packet 1 of cigarettes described may also be used for producing a carton of cigarettes, which is substantially the same as packet 1 described, except that it contains a group of packets of cigarettes as opposed to a group of cigarettes, or for producing a packet of cigars or similar, which is substantially the same as packet 1 described, except that it contains a group of cigars or similar, as opposed to a group of cigarettes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Packages (AREA)
  • Package Closures (AREA)
  • Packaging Of Special Articles (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (13)

  1. Procédé d'emballage pour produire un paquet scellé (3) comprenant un groupe (4) d'articles de tabac cylindriques, le procédé d'emballage comprenant les étapes consistant à :
    coupler le groupe (4) d'articles de tabac à un élément de renfort (8) comprenant une paroi avant (9) orientée longitudinalement et positionnée en contact avec les parois latérales cylindriques des articles de tabac ; et deux parois latérales (10) positionnées sur les côtés opposés de la paroi avant (9), positionnées en contact avec les parois latérales cylindriques des articles de tabac, et orientées transversalement par rapport à une trajectoire d'emballage (P) ;
    amener le groupe (4) d'articles de tabac, couplé à l'élément de renfort (8), le long de la trajectoire d'emballage (P) sur un transporteur d'emballage (48) ;
    plier une bande (33) de matériau d'emballage longitudinalement, c'est-à-dire parallèlement à la trajectoire d'emballage (P), autour de la trajectoire d'emballage (P) pour amener les deux bords opposés de la bande (33) de matériau d'emballage en contact et afin de former un emballage tubulaire enfermant le groupe (4) d'articles de tabac couplé à l'élément de renfort (8) ;
    thermosouder les deux bords chevauchants opposés de la bande (33) du matériau d'emballage longitudinalement, c'est-à-dire parallèlement à la trajectoire d'emballage (P), afin de stabiliser l'emballage tubulaire ; et
    thermosouder et couper l'emballage tubulaire transversalement, c'est-à-dire perpendiculairement à la trajectoire d'emballage (P), en amont et en aval du groupe (4) d'articles de tabac couplé à l'élément de renfort (8), afin de terminer l'emballage scellé (3) ;
    dans lequel le groupe (4) d'articles de tabac couplé à l'élément de renfort (8) est amené transversalement le long de la trajectoire d'emballage (P), c'est-à-dire avec les axes longitudinaux des articles de tabac perpendiculaires à la trajectoire d'emballage (P) et à la soudure thermique longitudinale et parallèlement aux soudures thermiques transversales ;
    le procédé d'emballage étant caractérisé en ce que :
    l'élément de renfort (8) comprend une paroi inférieure (11) positionnée en contact avec les embouts des articles de tabac et orientée longitudinalement par rapport à la trajectoire d'emballage (P) ; et
    l'élément de renfort (8) comprend un système de raccordement raccordant la paroi inférieure (11) et les parois latérales (10) de l'élément de renfort (8), et qui empêche les deux parois latérales (10) de se déplacer par rapport à la paroi inférieure (11).
  2. Procédé d'emballage selon la revendication 1, dans lequel la bande (33) de matériau d'emballage a une ouverture d'extraction (5) qui est recouverte par un rabat de scellement pouvant s'ouvrir (6), et est positionnée sur le côté opposé de l'emballage tubulaire sur la soudure longitudinale, et de manière centrale entre les deux soudures thermiques transversales.
  3. Procédé d'emballage selon la revendication 1 ou 2, et comprenant les étapes supplémentaires consistant à :
    former le groupe (4) d'articles de tabac indépendamment et séparément de l'élément de renfort (8) ;
    plier l'élément de renfort (8) indépendamment et séparément de la formation du groupe (4) d'articles de tabac ; et
    coupler le groupe (4) préformé d'articles de tabac à l'élément de renfort (8) pré-plié.
  4. Procédé d'emballage selon la revendication 3, et comprenant les étapes supplémentaires consistant à :
    former le groupe (4) d'articles de tabac au moyen d'un transporteur de formage (35) raccordé à une trémie (34) ; et
    plier l'élément de renfort (8) au moyen d'un transporteur de pliage (38) parallèle à et le long du transporteur de formage (35).
  5. Procédé d'emballage selon la revendication 4, et comprenant l'étape supplémentaire consistant à coupler le groupe (4) d'articles de tabac avec l'élément de renfort (8) au moyen d'un transporteur de couplage (42) perpendiculaire au transporteur de formage (35) et au transporteur de pliage (38).
  6. Procédé d'emballage selon la revendication 1 ou 2, et comprenant les étapes supplémentaires consistant à :
    insérer l'élément de renfort (8) dans une poche de formage (36) d'un transporteur de formage (35) en amont d'une trémie (34) ; et
    transférer le groupe (4) d'articles de tabac de la trémie (34) à la poche de formage (36) et directement dans l'élément de renfort (8) préalablement inséré.
  7. Procédé d'emballage selon l'une des revendications 1 à 6, dans lequel le transporteur d'emballage (48) comprend une surface coulissante (52) sur laquelle le groupe (4) d'articles de tabac coulisse, et autour de laquelle la bande (33) du matériau d'emballage est enroulée ; et un dispositif de poussée (53) positionné sur le groupe (4) d'articles de tabac, et qui pousse le groupe (4) d'articles de tabac le long de la trajectoire d'emballage (P).
  8. Procédé d'emballage selon la revendication 7, dans lequel le dispositif de poussée (53) comprend une première courroie transporteuse (54) qui est positionnée sur le groupe (4) d'articles de tabac, parallèle à la trajectoire d'emballage (P), comprime le groupe (4) d'articles de tabac contre la surface coulissante (52) et comprend des palettes (55) qui font saillie de la première courroie transporteuse (54) et sont positionnées en amont et en aval du groupe (4) d'articles de tabac, afin de former un siège logeant le groupe (4) d'articles de tabac.
  9. Procédé d'emballage selon la revendication 7 ou 8, dans lequel le groupe (4) d'articles de tabac est amené sur la surface coulissante (52) par un transporteur d'alimentation (56) comprenant au moins une deuxième courroie transporteuse (57) au-dessous du groupe (4) d'articles de tabac et sur laquelle le groupe (4) d'articles de tabac s'appuie.
  10. Procédé d'emballage selon l'une des revendications 1 à 9, et comprenant l'étape supplémentaire, lors du pliage de la bande (33) du matériau d'emballage, consistant à comprimer deux bords longitudinaux opposés de l'emballage tubulaire transversalement au moyen de deux troisièmes courroies transporteuses (59) correspondantes positionnées l'une en face de l'autre sur les côtés opposés de la trajectoire d'emballage (P).
  11. Procédé d'emballage selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'il comprend l'étape consistant à extraire l'air de l'emballage tubulaire afin de former des emballages scellés sous vide (3).
  12. Procédé d'emballage selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'il comprend l'étape consistant à injecter du gaz inerte dans l'emballage tubulaire afin de former des emballages (3) scellés sous atmosphère contrôlée.
  13. Machine d'emballage (26) pour produire un emballage scellé (3) contenant un groupe (4) d'articles de tabac, la machine d'emballage (26) comprenant :
    une unité de couplage (31) pour coupler le groupe (4) d'articles de tabac à un élément de renfort (8) comprenant une paroi avant (9) orientée longitudinalement et positionnée en contact avec les parois latérales cylindriques des articles de tabac ; et deux parois latérales (10) positionnées sur les côtés opposés de la paroi avant (9), positionnées en contact avec les parois latérales cylindriques des articles de tabac, et orientées transversalement par rapport à une trajectoire d'emballage (P) ;
    un transporteur d'emballage (48) pour amener le groupe (4) d'articles de tabac, couplé à l'élément de renfort (8), le long de la trajectoire d'emballage (P) ;
    un dispositif de pliage (49) pour plier une bande (33) de matériau d'emballage longitudinalement, c'est-à-dire parallèle à la trajectoire d'emballage (P), autour de la trajectoire d'emballage (P) pour amener les deux bords opposés de la bande (33) de matériau d'emballage en contact et afin de former un emballage tubulaire enfermant le groupe (4) d'articles de tabac couplé à l'élément de renfort (8) ;
    un premier dispositif de thermosoudage (50) pour thermosouder les deux bords chevauchants opposés de la bande (33) du matériau d'emballage longitudinalement, c'est-à-dire parallèle à la trajectoire d'emballage (P), afin de stabiliser l'emballage tubulaire ; et
    un second dispositif de thermosoudage (51) pour thermosouder et couper ledit emballage tubulaire transversalement, c'est-à-dire perpendiculairement à la trajectoire d'emballage (P), en amont et en aval du groupe (4) d'articles de tabac couplé à l'élément de renfort (8), afin de terminer l'emballage scellé (3) ;
    dans laquelle le transporteur d'emballage (48) amène le groupe (4) d'articles de tabac, couplé à l'élément de renfort (8), transversalement le long de la trajectoire d'emballage (P), c'est-à-dire avec les axes longitudinaux des articles de tabac perpendiculaires à la trajectoire d'emballage (P) et à la soudure thermique longitudinale et parallèle aux soudures thermiques transversales ;
    la machine d'emballage (26) étant caractérisée en ce qu'elle comprend des moyens de pliage qui plient une découpe (18) afin de former l'élément de renfort (8) prévu avec une paroi inférieure (11) positionnée en contact avec les embouts des articles de tabac et orientée longitudinalement par rapport à la trajectoire d'emballage (P) et afin de former un système de raccordement raccordant la paroi inférieure (11) et les parois latérales (10) de l'élément de renfort (8), qui empêche les deux parois latérales (10) de se déplacer par rapport à la paroi inférieure (11).
EP13767113.7A 2012-07-20 2013-07-22 Procédé d'emballage et machine pour produire un emballage étanche contenant un groupe d'articles de tabac Active EP2874887B2 (fr)

Applications Claiming Priority (2)

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IT000391A ITBO20120391A1 (it) 2012-07-20 2012-07-20 Metodo d'incarto e macchina impacchettatrice per realizzare un incarto sigillato contenente un gruppo di articoli da fumo
PCT/IB2013/055992 WO2014013478A1 (fr) 2012-07-20 2013-07-22 Procédé d'emballage et machine pour produire un emballage étanche contenant un groupe d'articles de tabac

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EP2874887A1 EP2874887A1 (fr) 2015-05-27
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BR (1) BR112014031951A2 (fr)
IT (1) ITBO20120391A1 (fr)
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PL2874887T3 (pl) 2016-12-30
ITBO20120391A1 (it) 2014-01-21
WO2014013478A1 (fr) 2014-01-23
BR112014031951A2 (pt) 2017-06-27
EP2874887B2 (fr) 2021-12-29
EP2874887A1 (fr) 2015-05-27

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