EP1442980B1 - Appareil et procédé pour fabriquer des emballages refermables - Google Patents

Appareil et procédé pour fabriquer des emballages refermables Download PDF

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Publication number
EP1442980B1
EP1442980B1 EP04075028A EP04075028A EP1442980B1 EP 1442980 B1 EP1442980 B1 EP 1442980B1 EP 04075028 A EP04075028 A EP 04075028A EP 04075028 A EP04075028 A EP 04075028A EP 1442980 B1 EP1442980 B1 EP 1442980B1
Authority
EP
European Patent Office
Prior art keywords
tube
fill
longitudinal
overlap
seal
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.)
Expired - Lifetime
Application number
EP04075028A
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German (de)
English (en)
Other versions
EP1442980A1 (fr
Inventor
Peter Wilhelmus Henricus Rietjens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Food Solutions Weert BV
Original Assignee
CFS Weert BV
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Filing date
Publication date
Application filed by CFS Weert BV filed Critical CFS Weert BV
Publication of EP1442980A1 publication Critical patent/EP1442980A1/fr
Application granted granted Critical
Publication of EP1442980B1 publication Critical patent/EP1442980B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/06—Applying adhesive tape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B65B9/2028—Rollers or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2042—Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/213—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 the web having intermittent motion
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • 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
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/12—Creating additional longitudinal welds on horizontal or vertical form fill seal [FFS] machines for stiffening packages or for creating package edges
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/04—Machines constructed with readily-detachable units or assemblies, e.g. to facilitate maintenance

Definitions

  • the invention relates to a device for making bag-shaped packagings from a web of sheet material, such as synthetic foil, for loose products that may or may not be packaged in groups, such as sweets, powdered or granular products, such as ground cheese or flour or viscous products, such as salads. Below products are referred to in general, which therefore may have any given shape or consistency.
  • the invention furthermore relates to such a method.
  • the invention further relates to a reclosable, bag-shaped packaging for said products.
  • the bag is formed from a sheet of foil material and has a front side and a rear side which at the side edges are sealed together. The material of the rear side continues over the upper side and forms an overlap at the front side.
  • the foil material has an outer layer which is of a different synthetic material than the inner layer. At the location of the overlap (that can be engaged by the hand) its inner layer is attached on the outer layer of the front side by means of a severable seal.
  • On the outer layer of the front side a strip of doublesided adhesive tape may be attached, which at the outer side has been provided with a removable protective strip. By removing the protective strip after opening the bag, during which the severable seal is severed, the strip of adhesive tape forms a sealing that can be opened and closed several times.
  • the bag may be provided with an inwardly folded bottom area, in order to offer an increase of filling volume of the bag by unfolding.
  • the filled bag can be put straight up, but then lacks sufficient stability to remain positively standing up, and may topple over. A shopkeeper will therefore be inclined to put the bag down flat on its rear side, and stack the bags, which harms the presentation of the product.
  • a form-fill-seal machine that is easy to adapt to the wanted packaging with an overlap that can be opened, and which machine can be substantially standard, particularly having transverse sealing jaws that are reciprocally moveable in a vertical plane perpendicular to the front side, as is usual in form-fill-seal machines -that may or may not be so-called continuously operative- (in continuously operative machines the transverse sealing jaws do not only move towards each other and away from each other again, but also up and down, in non-continuously operative machines the motion in the said vertical plane is merely direct according to a straight line towards each other and away from each other).
  • the invention provides a form-fill-seal machine for making bag-shaped packagings for products, such as edible products, according to claim 1
  • the asymmetrical position of the overlap realised with this machine makes it possible to place the longitudinal sealing means for the severable seal seam at one lateral side of the fill tube (as considered from the front side), as a result of which a condition has been met for (easily) changing the form-fill unit: after all no longitudinal sealing jaws need to be removed for taking out the form-fill unit from the front.
  • a standard machine in which the transverse sealing jaws reciprocally move in a vertical plane perpendicular to the front side of the machine, can be used here, with only minor adjustment. The owner of such a standard machine is thus more easily enabled to make packagings having an overlap that can be opened.
  • the machine is furthermore provided with second longitudinal sealing means positioned at a second side, at one lateral side of the form tube, as considered from the front side of the machine, opposite the first side, for forming at least one longitudinal seal in the foil tube.
  • second longitudinal sealing means are provided that are positioned at either side of, preferably equidistanced from, the vertical plane of section. Also the longitudinal sealing means for the other side then allow an easy change of the form-fill unit.
  • the form-fill unit at the second side is provided with two protruding form strips for forming longitudinal folds in the foil tube, wherein the second longitudinal sealing means are positioned for sealing the longitudinal folds.
  • the second longitudinal sealing means may comprise an anvil/form member, that extends between both longitudinal folds for positioning them for sealing.
  • the position of the first and/or second longitudinal sealing means is adjustable in a direction towards/away from the fill tube, so that the cross-section of the fill tube used at a certain moment can be adjusted to.
  • the anvil/form member as well preferably forms an interchangeable part then.
  • the form-fill unit is removably or detachably placed in the machine.
  • the form/fill tube at the first side at the lower end is provided with a first protrusion, situated in or near the vertical plane of section and extending downwards, and which in horizontal direction is free from the remainder of the lower end of the fill tube.
  • the protrusion forms a guide for the tube area at the first side, so that it is narrowed in order to end up crease-free between the transverse sealing jaws.
  • the first protrusion is pen- or lip-shaped and narrow as a result.
  • the first protrusion with its end smoothly extends beyond the profile of the fill tube, so that the narrowing of the tube is enhanced at that location.
  • the form/fill tube at its lower end is furthermore provided with at least one second protrusion, which is at least situated at the second side and defines a recess with the first protrusion.
  • the recess offers a certain room for the shape transformation, whereas the foil tube is guided and held there where such is necessary.
  • the second protrusion forms a sharp guiding edge, as a result of which a self-orienting influence can be exerted on the bottom seal, particularly when the guiding edge is substantially oriented towards the bottom.
  • the sharp edge only takes little space in transverse direction, as a result of which the area within the bottom seal is able to be tautened.
  • two second protrusions are present, which extend on either side of the vertical plane of section and preferably keep an area free between them in which area a fold-maker is allowed to extend. In this way it is achieved that the said bottom area defined by the two bottom seals can be folded in smoothly, prior to the transverse sealing jaws being active on it.
  • the two second protrusions may advantageously be connected to each other by a plate, for instance a V-shaped plate, which is forming a cavity for the inwardly folded bottom area to be made.
  • the foil tube is pulled taut and slightly tapering in that direction, in order to ensure that the foil tube at said short side is not folded double when closing the transverse sealing jaws, but at the other short side a sufficient fill opening will each time remain present.
  • the form-fill tube may have different cross-sectional shapes, for instance circular.
  • the fill tube has a substantially rectangular cross-section, having the main sides substantially parallel to said vertical plane of section. It is noted that a rectangle also includes a flat cross-section, in which the long sides are buckled or flat bent.
  • the first side of the form-fill tube is bent having a flat surface between bent transitions to the main sides.
  • the machine is furthermore provided with means for applying a strip of doublesided adhesive tape on the web of foil material in the area of the intended overlap.
  • the first longitudinal sealing means are preferably positioned for arranging the severable longitudinal seal at the side of the strip of doublesided adhesive that faces away from the outer longitudinal edge of the overlap.
  • the form-fill unit is detachably arranged on the frame it can easily be replaced by another unit (possibly the original one of the machine), for instance a unit for forming regular, non-reclosable, cushion-shaped bag-shaped packagings only having one longitudinal seal for permanent sealing of the (in that case very short) overlap.
  • the machine may be a standard machine adapted for the latter packagings, in which the transverse sealing jaws are moveable in a vertical plane perpendicular to the front side of the machine. Said standard machine can then simply be temporarily equipped for making the reclosable packagings, without parts, particularly the transverse sealing jaws, having to be rotated.
  • the unit can also be replaced by a unit for comparable reclosable packagings of a larger cross-section.
  • the means for arranging the severable seal may be positioned for arranging the severable seal at the side of the strip of doublesided adhesive facing away from the outer longitudinal edge of the overlap.
  • the second longitudinal sealing means are positioned at the second short side of the form-fill tube.
  • the first short side of the form-fill tube is bent having a flat surface between bent transitions to the main sides.
  • the form-fill unit is detachably arranged on the frame, and/or the first longitudinal sealing means and/or the second longitudinal sealing means are detachably arranged on the frame, for easy adjustment to the desires regarding the shape of the packaging.
  • the invention provides a method for making bag-shaped packagings for products, such as edible products, according to claim 14
  • the foil web is supplied to the form shoulder eccentrically with respect to a centre plane of the fill tube, which is perpendicular to the front side, as a result of which the realisation of the overlap shifted to the lateral side of the fill tube is facilitated.
  • an adhesive strip is applied for forming a closing means for the overlap on the packaging, which closing means can be used several times, preferably on the lower side of the foil web, in an edge area thereof.
  • the adhesive strip is adhered in the overlap at the foil area of the overlap that is situated on the inner side.
  • the tube is furthermore folded in an area at a distance from the overlap, preferably at a second side of the fill tube situated opposite the first side, for forming two fold areas extending in longitudinal direction which between them define a bottom area, wherein the web material at the location of the fold areas is sealed together for forming two bottom longitudinal seals.
  • bottom area is also folded inwards by means of fold makers that are positioned immediately above and immediately below transverse sealing jaws, an inwardly folded bottom can be obtained without the transverse sealing creating creases there.
  • the invention provides a packaging, for a mass of articles, such as sweets, viscous material, such as salad , according to claim 22
  • Such a reclosable packaging is easy in use and prior to and after use can be placed straight up in a stable manner, particularly when presented for sale in a shop. The use of space thus remains limited to the bottom profile.
  • the means that enable repeated opening and closing of the packaging are formed by a strip of doublesided adhesive, preferably provided with a detachable protective strip, in which the strip of adhesive preferably is permanently adhered to the first main side.
  • the form-fill-seal machine 1 in figure 1 comprises a frame 2, on which the various parts of the machine have been arranged and on which operation and control means that are not further shown are also included.
  • the frame 2 is provided with a stock roll 3 of a web F of foil material, which via a number of free-running circulating rollers 7 is passed upwards to a horizontal track.
  • the foil may for instance be a known multi-layered foil having specifications OPP/OPA/PFP having respective thicknesses of z20/15/50 ⁇ m, available from Amcor, in Gent, Belgium.
  • a stock roll 4 of doublesided adhesive tape 57 has been arranged.
  • the doublesided adhesive tape 57 is provided with a protective sheet 57c, at the radial inside as considered on the roll.
  • the adhesive tape 57 is passed upwards to end up against the lower side of the web F at the location of the roller 5.
  • two rollers 5a, 5b are arranged, which guide the adhesive strip 57 and the web F, during continuous transport in the direction C.
  • a form-fill unit 10 is removably/replaceably arranged on the frame 2.
  • two foil drive units 80 are attached, which each comprise a frame 81 and a vacuum belt 82.
  • the frame 81 forms a unity with a holder 83 which can be attached to two rods 84 attached in the frame 2 (figure 1 A).
  • the distance between the holders 83 is adjustable with means that are not further shown.
  • sealing station 70 having in absolute sense horizontally, in the direction G, synchronously perpendicular to the front side reciprocally movable transverse sealing jaws 71a, 71b.
  • a fill chute 6 is also shown, for receiving small articles to be packaged, such a sweets, from the direction F.
  • the form-fill unit 10 is further shown in the figures 1 A-E and 2A-D.
  • the form-fill unit 10 has a frame 11, that can be suspended and attached to the frame 2 of the machine 1.
  • the frame 11 comprises a bracket 12 which is formed as one unity with the girders 16, on which a support plate 15 is attached.
  • On the support plate 15 an asymmetrical form shoulder 13 is attached, which will be further discussed.
  • a fill tube 14 extends through the form shoulder 13, which fill tube 14 at the upper end, spaced apart above the form shoulder 13, is attached to the upper end of the bracket 12.
  • Bracket 12, form shoulder 13 and fill tube 14 form one unity, that can be kept in stock in various embodiments and can be placed in the frame 2 when a certain bag shape has to be made.
  • the girders 16 For attachment in the frame 2 the girders 16 have an inverted U-shape, in order to be able to be placed on placement pins 19a, which with ends 19 are permanently attached to the frame 2.
  • the pins 19a have a length that corresponds to the length of the girders 16.
  • the ends 19 form a stop for the girders 16, for correct placement.
  • the tube 14 extends vertically through the body of the form shoulder 13, in a correspondingly shaped vertical passage 93 thereof.
  • the collar surface 90 of the form shoulder 13 on the one hand slopes downwards with an inclined surface 91 into a narrowing lip 92, which runs to the left short side of the passage 93.
  • Said edge 94 is also turned at the corner, running about the lip 92, and therewith defines a sideward opening 95 through which the edge area of the foil web F, which is to form an overlap, is able to move.
  • the lip 92 extends to near the vertical main plane S.
  • the fill tube 14 is accommodated with play in the passage 93, which is sufficient for movement of the foil web F, which is then transformed into a tube F', over the circumferential surface of the tube 14.
  • the passage 93 is slightly broader, at the opposite short side much broader.
  • the cross-section of the tube is flat rectangular, having a vertical main plane or plane of symmetry S.
  • the one short side forms a flat surface at 44, which surface via bent corners 46 changes into flat main sides 41 and 42.
  • the other short side has a flat surface 43, which in the area immediately below the shoulder 13 is provided with protruding longitudinal strips 45 in the extension of the sides 41, 42. Said strips 45 are only short considered in tube direction.
  • each longitudinal sealing station 19 and 20 are arranged, which, as can be seen in the figures 1A-E, each comprise a girder 17, by which means they are attached in the holders 18, which holders 18 are permanent to the holders 83, which, as already mentioned, are adjustably attached to the frame 2.
  • the mutual distance of the longitudinal sealing stations can thus be adjusted with the mutual distance of the belts 82.
  • the one longitudinal sealing station 19 comprises an upright 21 mounted on a girder 17, on which girder a holder 22 is attached.
  • pneumatic means that are not further shown are provided, by means of which the sealing head holder 23 attached thereon can be moved in horizontal direction towards the tube 14 and away from it.
  • the sealing head holder 23 holds a longitudinal sealing head 23a, provided with longitudinal sealing surface 23b (figure 2B).
  • the longitudinal sealing surface 23b is positioned to cooperate with flat surface 44, which then serves as counter surface or anvil, immediately adjacent to the plane S.
  • a vertical plate 24 is attached to the rear side of the holder 22, on which plate a protective cover can be arranged.
  • the other longitudinal sealing station 20 is designed double, and is operative in a direction perpendicular to the direction of the first longitudinal sealing station 19.
  • an upright 26 is mounted, on which a horizontal mounting plate 31 is attached.
  • a form member 32 is attached, which extends to near the short surface 43 of the tube 14, while leaving play for the web of foil F', and at the corners is provided with seal-rubber seal anvils 34, which are facing sidewards, perpendicular to the normal of the flat surface 44 situated on the other short side.
  • the form member 32 is detachable from the plate 31 by means of screw handles 28b, in order to be replaced by a form member having another shape or set-up, to be used with another form tube.
  • longitudinal sealing heads 37a are positioned, which are provided with longitudinal sealing surfaces 37 for cooperation with the said seal anvils 34.
  • the longitudinal sealing heads 37a are attached on holders 37 which, in a manner comparable to the one of the holders 22, are attached on holders 27, in which pneumatic means that are not shown are included for reciprocally moving the sealing head holders 27, and thus the sealing heads 37.
  • the holders 27 are detachably attached on the aforementioned mounting plate 31, by means of screw handles 28a.
  • the screw knobs 28a (twice) and 28b are always provided in pairs.
  • a vertical plate 29 is attached, on which said protective cover can be arranged.
  • the position of the holders 27 in a direction parallel to the plate 31 is adjustable, see arrows.
  • a pair of vertical guiding plates 30 is also attached on the holder 32, which are located at the short sides for the sealing heads 37 and are provided with parallel, vertical and flat portions 34 and with run-in strips 33 that converge with respect to each other.
  • the plates 30 are situated at a short distance for the anvils 34 and are provided with a passage (not shown), for the sealing heads 37.
  • the lower end of the tube 14 is shaped in a particular way, and namely particularly the lower end of the strip 44, which in the shape of a tapering lip 74 is bent concave and then convex again to the outside, extending beyond the profile of the tube 14 as it is above it.
  • the tube 14 at its lower end is provided with a V-shaped guide 77 (figure 2E) oriented to the inside with its bottom, which guide has edges 78a,b that are placed slightly within the corners of the tube 14.
  • the guide 77 is covered by a plate 79.
  • an open space 76 is realised, which in this example, is upwardly limited by horizontal lower edge 75 of the main sides 41 and 42 of the tube 14.
  • a fold maker 102a is positioned which is provided with an edge 103a, which fold maker 102a is plate-shaped and arranged at the end of a rod 101 a, which is adjustably accommodated in holder 100a which is permanent to the frame 2.
  • a comparable fold maker 102b is positioned, arranged at the end of a pin 101 b, adjustably accommodated in holder 100b, and provided with a nose 103b having a run-out edge.
  • the fold maker 102b is placed at vertical distance X below the fold maker 102a in order to make movement of the transverse sealing jaws 71 a-b in the direction G in between them possible.
  • the holders 100a and 100b are reciprocally movable in a direction parallel to the pins 101 a and 101 b, in register with the motion of the transverse sealing jaws.
  • a foil material in the form of a laminate, having for instance a polythene inner layer that will come to lie at the inner side of the bag and a polypropene outer layer that will come to lie at the outer side of the bag.
  • the foil web is unwound from the stock roll 3 in the direction A, and runs upwards (F) via turn rollers 7, and then horizontally (C) over the roller 5 where the doublesided adhesive tape 57 is added, which originates from stock roll 4 rotating in the direction B. With the adhesive strip 57 attached at the lower side, the protective sheet 57c still below, the foil web F runs to form shoulder 13, and at that location is transformed into a tube shape corresponding to tube 14.
  • the centre line of the foil web F that is transported in the direction C to the form shoulder 13 here lies staggered over a distance Y with respect to the vertical plane T through the centre of the tube 14 (perpendicular to plane S).
  • the edge area provided with the adhesive strip 57 is brought a considerable distance, as considered in the drawing at the left-hand side, from the plane T, up to the left-hand side of the tube 14, to near the plane S.
  • the overlap extends further to the main side 41 of the tube 14, which side faces the front side 8 of the machine 1.
  • the doublesided adhesive strip 57 is present, its protective sheet 57c also situated at the outer side, so that at that location no adhesion to the inner surface of the overlap formed is effected.
  • the strips 45 ensure two folds in the foil web F', for which the material originates from foil material present in the widened area situated there in the passage 93. Due to the strips 30 and the holder 32 with anvil surfaces 34, the two folds retain their flat shape.
  • the tubular shape F' of the foil shown in figure 2B is secured by operating the longitudinal sealing stations 19 and 20, so that the longitudinal sealing head 23 in cooperation with the flat surface 44, by heat sealing forms a longitudinal seal between the inner surface of the overlap and the outer surface of the foil area situated beneath it, which foil area forms the edge area of the foil web F onto which the adhesive strip 57 has been arranged.
  • the layer of polypropene is sealed to the layer of polythene here, which seal can be severed when opening the packaging to be made. Note that (figure 2B) the location of the seal is now situated adjacent to the plane S.
  • the area near the longitudinal seam formed on the flat surface 44 is smoothly urged to the outside by the lip 74, in which the material of the foil that is necessary to that end is obtained by the recesses 76.
  • the edges 78a,b keep the bottom edges 58a,b in their place and orient them such that they are parallel to the closing plane of the transverse sealing jaws.
  • the fold maker 102a here extends in the V-space within the guide 77, in order to form an inwardly folded bottom area, in the bag yet to be made, without creases arising.
  • the V-space is large enough for forming the inwardly folded bottom area.
  • the foil tube F' When leaving the lower end of the tube 14 the foil tube F' is thus pulled slightly flatter in order to thus be engaged without creases by the transverse sealing jaws 71 a, 71 b moved towards each other in the direction G.
  • the transverse sealing jaws 71 a, 71 b in which a cutting means has also been incorporated, here move between the both fold formers 102a,b and form an upper transverse seal of a previous packaging and a lower transverse seal for the next packaging.
  • the product is introduced through the fill tube into the bag that lies on top and is still in open connection with the foil tube.
  • the cutting means in the transverse sealing jaws 71 a, 71 b is activated, to separate a packaging.
  • a bag 50 is shown, having a rear side 52 and a front side 51, in which the front side is attached to the overlap 53 at the upper edge by means of a longitudinal seal 56 in such a manner that it can be manually severed, which overlap is a continuation of the rear side 52, passing over the upper side 54 of the packaging 50.
  • the doublesided adhesive strip 57 is positioned, which with the adhesive side 57b is adhered to the outer layer of the front side 51 and with the other adhesive side 57a is still covered by protective strip 57c.
  • hand engagement part 61 is formed, having lower edge 62.
  • transverse seals 64 formed by means of transverse sealing jaws 71 a,b are shown, which transverse seals, at the location of areas 65, 66 and 67, coincide with the seal 56, the adhesive strip 57 and the bottom seams 58a, 58b.
  • areas 65, 66 and 67 coincide with the seal 56, the adhesive strip 57 and the bottom seams 58a, 58b.
  • areas 68 the double folded bottom area 59 is sealed at its ends.
  • the bag 50 can be placed straight up, that means with the lower edges 60a, 60b of the bottom seams 58a, 58b on a surface, wherein the overlap 53 is situated at the top, see figure 3C.
  • the user takes the edge area 61 of the overlap 53, to pull it upwards and thus sever the seam 56.
  • the user can remove the protective strip 57c and then adhere the overlap 53 to the adhesive layer 57a on the front side 51 of the bag 50.
  • the adhesive selected for the adhesive strip 57 is suitable to adhere to both the inner layer and the outer layer.
  • front side 51 is folded down, so that the inner side of that material is turned to the outside and then the longitudinal sealing head 23 makes an inside-inside seal, that can also be severable, in case suitable material is selected.
  • an alternative fill tube shape 114 is shown, which in this case is circular.
  • the fill tube 114 at the right-hand side may be provided with protrusions such as the aforementioned short protrusions 45, for preparing the formation of the bottom seal areas.
  • protrusions such as the aforementioned short protrusions 45
  • the sealing head for forming the severable seal is shown, in a position comparable to those of the previous figures, that means having the sealing surface 23b just adjacent to the plane of symmetry S.
  • the transverse sealing jaws 71 a, b are schematically shown, which in the direction G can be moved towards and away from each other.
  • the transverse sealing jaws 71 a, b are of a standard machine, possibly continuously operative, accommodated therein in a standard manner. They are symmetrical with respect to the plane of symmetry S of the fill tube 114.
  • the attachment of the longitudinal sealing head 23 is, just like in the embodiment of the previous figures, situated at a lateral side thereof.
  • the foil web F is again supplied eccentrically, having eccentricity Y between centre line U of the foil web F and the tube plane of symmetry T.
  • the eccentric supply of the foil web is possible on standard machines, because the width of the supply rollers 7 and the like leaves room to that end, or its trestle can be moved in transverse direction.
  • the edge area provided with the adhesive strip 57 may extend far to the left about the foil tube 14, approximately 90° past the plane of symmetry T.
  • the severable closing seam can each time be arranged on the left-hand side near the plane of symmetry S, which is also near the closing surface of the transverse sealing jaws 71a, b at the side of the overlap.
  • the possible bottom seals can be made at the opposite side.
  • the transverse sealing jaws 71a, b can thus be maintained, and one can limit oneself to moving the wanted longitudinal sealing heads and the unit of form shoulder/ fill tube.

Landscapes

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

Claims (26)

  1. Formeuse-remplisseuse-scelleuse destinée à fabriquer des emballages en forme de sacs pour des produits, tels que des produits comestibles, à partir d'une bande de matériau en feuille, comme une feuille synthétique, la machine comportant un bâti (2) muni d'une charge de bande de matériau en feuille et une amenée de la bande de matériau en feuille à l'état plat, et une unité (10) de formage-remplissage positionnée sur un côté avant de la machine, l'unité de formage-remplissage comportant un épaulement (13) de formage servant à transformer la bande plate de matériau en feuille en un tube en feuille, ainsi qu'un tube (14) de formage-remplissage relié à l'épaulement de formage et pourvu de faces latérales et longitudinales, présentant un plan de coupe vertical principal (S) dans lequel la machine comporte en outre des mâchoires (71a, 71b) transversales de scellage positionnées au-dessous de l'extrémité inférieure du tube de remplissage afin de former des scellés transversaux dans le tube en feuille et capables d'un mouvement alterné dans un plan vertical (T) perpendiculaire à la face avant de la machine et au plan de coupe vertical principal (S) parallèle aux faces longitudinales, l'épaulement de formage présentant une forme asymétrique pour former dans le tube en feuille un rabat (53) s'étendant au moins jusqu'à une courte distance ou à proximité dudit plan de coupe vertical principal, la machine étant caractérisée en ce qu'elle est en outre pourvue de premiers moyens (23) de scellage longitudinaux positionnés sur une première face latérale du tube (14) de formage-remplissage, vue du côté avant de la machine, de préférence à une courte distance ou à proximité dudit plan de coupe vertical principal, pour former un premier scellé (56) longitudinal séparable à l'emplacement du rabat (53).
  2. Formeuse-remplisseuse-scelleuse selon la revendication 1, pourvue en outre de deuxièmes moyens de scellage longitudinaux positionnés sur une deuxième face latérale du tube de formage, vue du côté avant de la machine, à l'opposé du premier côté, pour former au moins un scellé longitudinal dans le tube en feuille.
  3. Formeuse-remplisseuse-scelleuse selon la revendication 2, deux moyens de scellage longitudinaux étant installés, positionnés de chaque côté et de préférence à égale distance du plan de coupe vertical, l'unité de formage-remplissage du deuxième côté étant de préférence pourvue de deux bandes de formage saillantes destinées à former des plis longitudinaux dans le tube en feuille, les deuxièmes moyens de scellage longitudinaux étant de préférence positionnés de façon à sceller les plis longitudinaux.
  4. Formeuse-remplisseuse-scelleuse selon la revendication 3, les deuxièmes moyens de scellage longitudinaux comportant un organe de formage / enclume s'étendant entre les deux plis longitudinaux pour les positionner en vue du scellage.
  5. Formeuse-remplisseuse-scelleuse selon l'une quelconque des revendications 1 à 4, la position des premiers et / ou des deuxièmes moyens de scellage longitudinaux étant réglable dans une direction s'approchant / s'écartant du tube de remplissage.
  6. Formeuse-remplisseuse-scelleuse selon les revendications 4 et 5, l'organe de formage / enclume formant une pièce interchangeable.
  7. Formeuse-remplisseuse-scelleuse selon l'une quelconque des revendications précédentes, l'unité de formage-remplissage étant placée de façon détachable dans la machine.
  8. Formeuse-remplisseuse-scelleuse selon l'une quelconque des revendications précédentes, le tube de formage-remplissage du premier côté de l'extrémité inférieure étant pourvu d'une première protubérance, située dans ou à proximité du plan de coupe vertical et s'étendant vers le bas, et indépendante dans une direction horizontale du reste de l'extrémité inférieure du tube de remplissage, la première protubérance étant de préférence en forme de stylo ou de rebord.
  9. Formeuse-remplisseuse-scelleuse selon la revendication 8, la première protubérance s'étendant par son extrémité au-delà du profil du tube de remplissage.
  10. Formeuse-remplisseuse-scelleuse selon la revendication 8 ou 9, le tube de formage-remplissage étant en outre pourvu à son extrémité inférieure d'au moins une deuxième protubérance qui est au moins située du deuxième côté et définit un renfoncement avec la première protubérance, la deuxième protubérance formant de préférence un bord de guidage effilé, en particulier sensiblement orienté vers le bas.
  11. Formeuse-remplisseuse-scelleuse selon la revendication 10, deux deuxièmes protubérances étant présentes et s'étendant chacune d'un côté du plan de coupe vertical en maintenant de préférence une zone libre entre elles, un façonneur de plis pouvant se déployer dans cette zone, les deux deuxièmes protubérances étant de préférence reliées l'une à l'autre par une plaque, par exemple une plaque en V, qui forme une cavité servant à créer la zone de fond pliée vers l'intérieur.
  12. Formeuse-remplisseuse-scelleuse selon l'une quelconque des revendications précédentes, le tube de remplissage présentant une section droite sensiblement rectangulaire, ses côtés principaux étant sensiblement parallèles au plan de coupe vertical, le premier côté du tube de formage-remplissage étant de préférence coudé, présentant une surface plate entre des transitions coudées vers les côtés principaux.
  13. Formeuse-remplisseuse-scelleuse selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est en outre pourvue de moyens servant à disposer une bande de ruban adhésif à double face sur la bande de matériau en feuille dans la zone du rabat souhaité, les premiers moyens de scellage longitudinaux étant de préférence positionnés de façon à disposer le scellé longitudinal séparable du côté de la bande d'adhésif à double face orienté à l'opposé du bord longitudinal extérieur du rabat.
  14. Procédé de fabrication d'emballages en forme de sacs pour des produits, tels que des produits comestibles, dans une formeuse-remplisseuse-scelleuse à partir d'une bande de matériau en feuille, comme une feuille synthétique, la bande de matériau étant amenée à l'état plat à un épaulement de formage asymétrique positionné sur un côté avant de la machine et relié à un tube de formage-remplissage pourvu de faces latérales et longitudinales afin d'y être transformée en un tube dans lequel les bords longitudinaux forment un rabat, lesdites faces latérales étant parallèles à un plan de symétrie vertical du tube de remplissage qui est perpendiculaire à la face avant, le rabat étant formé de façon excentrée par rapport au plan de symétrie du tube de remplissage, caractérisé en ce qu'il s'étend jusqu'à la face latérale du tube de remplissage, ledit rabat étant, à une certaine distance du bord longitudinal extérieur du rabat, au niveau de ladite face latérale, fixé sur le tube par la mise en place d'un scellé séparable de fermeture dans la direction longitudinale du tube, après quoi le tube est rempli, scellé et fermé au moyen de scellés transversaux s'étendant perpendiculairement au tube et au plan de symétrie.
  15. Procédé selon la revendication 14, la bande de feuille alimentant l'épaulement de formage de façon excentrée par rapport au plan de symétrie du tube de remplissage, qui est perpendiculaire à la face avant.
  16. Procédé selon l'une quelconque des revendications 14 et 15, le tube étant en outre plié vers l'intérieur dans une zone située à une certaine distance du rabat, de préférence au niveau d'une deuxième face du tube de remplissage située à l'opposé de la première face, pour former deux zones de pliage s'étendant dans une direction longitudinale qui définissent entre elles une zone de fond, le matériau de la bande à l'emplacement des zones de pliage étant scellé pour former deux scellés longitudinaux de fond, la zone de fond étant de préférence pliée vers l'intérieur au moyen de façonneurs de plis positionnés immédiatement au-dessus et immédiatement au-dessous de mâchoires transversales de scellage, lesdits scellés étant de préférence mis en place exclusivement.
  17. Procédé selon l'une quelconque des revendications précédentes, une bande étant fournie dans la direction longitudinale du tube pour mettre en place un moyen de fermeture, ladite bande étant pourvue d'adhésif sur les deux faces.
  18. Procédé selon la revendication 17, le moyen de fermeture étant mis en place à une distance du bord longitudinal extérieur du rabat inférieure à la distance du scellé de fermeture séparable audit bord.
  19. Procédé selon l'une quelconque des revendications précédentes, les scellés transversaux étant mis en place par-dessus le scellé de fermeture séparable et le moyen de fermeture.
  20. Procédé selon l'une quelconque des revendications précédentes, le tube étant formé sur un tube de formage-remplissage vertical d'une formeuse-remplisseuse-scelleuse, le tube de formage donnant au tube une section droite sensiblement rectangulaire, dont une première face principale est orientée à l'opposé de la machine et l'autre deuxième face principale est orientée vers la machine, les scellés transversaux étant mis en place au moyen de mâchoires transversales de scellage qui, dans un plan vertical, sont déplacées transversalement par rapport au plan des deux faces principales, le rabat étant de préférence mis en place au niveau de la première face principale.
  21. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'à l'emplacement du rabat, dans une direction longitudinale du tube, une bande adhésive est appliquée afin de former un moyen de fermeture pour le rabat de l'emballage.
  22. Emballage destiné à une masse d'articles, comme des bonbons, un matériau visqueux, comme une salade, l'emballage ayant la forme d'un sac et étant fabriqué à partir d'une bande de matériau en feuille qui, à partir d'un état plat, a été recourbée en un tube présentant un rabat (53) puis, à l'état rempli, est coupée en tronçons (de tube) afin de séparer les emballages fabriqués, l'emballage étant, au niveau des bords (68) de découpe du tronçon en question, fermé par scellage pour former des bords latéraux, l'emballage présentant deux faces (51, 52) principales et une zone (55) de fond qui s'étend perpendiculairement aux bords latéraux et formant deux bords (60a, 60b) de fond qui définissent entre eux une bande (63) de fond pliée vers l'intérieur et forment, chacun avec une face principale jointive de l'emballage, une jointure (58a, 58b) de fond scellée, et étant caractérisé en ce que le rabat s'étend d'une face principale arrière jusque par-dessus une face principale avant et est, à une certaine distance de son bord terminal, scellé sur ladite face (51) principale avant au moyen d'un scellé (56) fermé mais séparable, l'emballage étant pourvu, à l'emplacement du rabat, d'une bande (57) adhésive qui permet l'ouverture et la fermeture répétées de l'emballage.
  23. Emballage selon la revendication 22, les scellés longitudinaux de fond et les scellés transversaux se recouvrant dans les zones de coins qui forment la limite de l'intérieur de l'emballage.
  24. Emballage selon la revendication 22 ou 23, les moyens permettant l'ouverture et la fermeture répétées de l'emballage étant situés entre le scellé longitudinal séparable et le bord longitudinal extérieur du rabat.
  25. Emballage selon les revendications 22 à 24, les moyens permettant l'ouverture et la fermeture répétées de l'emballage étant formés par une bande d'adhésif à double face, de préférence pourvue d'une bande protectrice détachable.
  26. Emballage selon l'une quelconque des revendications 22 à 25, le matériau en feuille étant un stratifié doté, sur ses deux faces extérieures, des première et deuxième couches respectives de matériaux synthétiques différents, le premier matériau étant fixé au deuxième matériau à l'emplacement du scellé longitudinal détachable.
EP04075028A 2003-01-06 2004-01-05 Appareil et procédé pour fabriquer des emballages refermables Expired - Lifetime EP1442980B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL1022307 2003-01-06
NL1022307 2003-01-06
NL1023151 2003-04-11
NL1023151A NL1023151C2 (nl) 2003-01-06 2003-04-11 Inrichting en werkwijze voor het vervaardigen van hersluitbare verpakkingen.

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EP1442980A1 EP1442980A1 (fr) 2004-08-04
EP1442980B1 true EP1442980B1 (fr) 2007-08-08

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US (1) US20040154271A1 (fr)
EP (1) EP1442980B1 (fr)
AT (1) ATE369284T1 (fr)
DE (1) DE602004007964T2 (fr)
ES (1) ES2291805T3 (fr)
NL (1) NL1023151C2 (fr)

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US8784289B2 (en) * 2010-04-29 2014-07-22 Illinois Tool Works Inc. Process of forming a wide mouth gusseted bag with edge seals
FR2962717B1 (fr) * 2010-07-13 2013-12-06 Da Silva Simoes Carlos Alberto Rodrigues Dispositif pour fabrication de sachet a soufflet sur ensacheuse verticale
JP5918980B2 (ja) * 2011-02-04 2016-05-18 株式会社イシダ 製袋包装機
US9840346B2 (en) * 2013-11-01 2017-12-12 Frito-Lay North America, Inc. Method and apparatus for making a structurally resilient package
US20160122061A1 (en) * 2014-10-31 2016-05-05 Radpak Sp z o.o. Pouch forming machine with vertical jaw adjustment mechanism
JP6742625B2 (ja) * 2016-04-28 2020-08-19 株式会社イシダ 包装装置
ITUA20162990A1 (it) * 2016-04-28 2017-10-28 Martini S R L Macchina confezionatrice verticale
WO2018158066A1 (fr) * 2017-02-28 2018-09-07 Gea Food Solutions Weert B.V. Inspection améliorée d'une enveloppeuse tubulaire verticale
CN107380560B (zh) * 2017-07-10 2019-08-09 广州市易盈包装材料有限公司 一种包装机
IT201700117793A1 (it) * 2017-10-18 2019-04-18 Mbp Srl Confezionatrice verticale con sistema di saldatura a cartuccia
RU205322U1 (ru) * 2020-11-24 2021-07-08 Общество с ограниченной ответственностью «БАРРАКУДА МЕХАНИКС» Устройство термосварки пакетов с запайкой продольного шва внахлёст
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Also Published As

Publication number Publication date
ATE369284T1 (de) 2007-08-15
DE602004007964D1 (de) 2007-09-20
ES2291805T3 (es) 2008-03-01
US20040154271A1 (en) 2004-08-12
NL1023151C2 (nl) 2004-07-07
EP1442980A1 (fr) 2004-08-04
DE602004007964T2 (de) 2008-04-24

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