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EP0062571B1 - Durchstechvorrichtung und -verfahren für Behälterverschluss und Einrichtung zur Herstellung der Vorrichtung - Google Patents

Durchstechvorrichtung und -verfahren für Behälterverschluss und Einrichtung zur Herstellung der Vorrichtung Download PDF

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Publication number
EP0062571B1
EP0062571B1 EP82400547A EP82400547A EP0062571B1 EP 0062571 B1 EP0062571 B1 EP 0062571B1 EP 82400547 A EP82400547 A EP 82400547A EP 82400547 A EP82400547 A EP 82400547A EP 0062571 B1 EP0062571 B1 EP 0062571B1
Authority
EP
European Patent Office
Prior art keywords
tabs
rigid
containers
lids
tab
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
Application number
EP82400547A
Other languages
English (en)
French (fr)
Other versions
EP0062571A1 (de
Inventor
Roland Torterotot
Jean-Claude Hautemont
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.)
Erca Holding SARL
Original Assignee
Erca Holding SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8106252A external-priority patent/FR2502590A1/fr
Priority claimed from FR8110727A external-priority patent/FR2506725A1/fr
Application filed by Erca Holding SARL filed Critical Erca Holding SARL
Publication of EP0062571A1 publication Critical patent/EP0062571A1/de
Application granted granted Critical
Publication of EP0062571B1 publication Critical patent/EP0062571B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • 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
    • B65D2231/00—Means for facilitating the complete expelling of the contents
    • B65D2231/02—Precut holes or weakened zones
    • B65D2231/025—Precut holes or weakened zones for draining or discharging the liquid contents, e.g. soup, milk
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2008—Rigid cutting or tearing devices
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2025—Multi-layered container, e.g. laminated, coated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/108—Flash, trim or excess removal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/13—Severing followed by associating with part from same source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1322—Severing before bonding or assembling of parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1322—Severing before bonding or assembling of parts
    • Y10T156/1339—Delivering cut part in sequence to serially conveyed articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1374—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing with means projecting fluid against work

Definitions

  • the invention relates to a method for providing lids for receptacles with lever tabs for piercing, said lids being made of a flexible and tearable material.
  • a peelable cover device has been very well received by manufacturers and users. Generally associated with an installation for manufacturing thermoformed containers, it has led to a safe and economical opening system.
  • French patent 2 241 466 also discloses cover opening devices using lever-piercing tabs, but on the one hand, these tabs are glued directly flat on relatively rigid covers made of material. thermoplastic, and secondly, these opening devices are necessarily associated with a cover having weakening lines and operate the opening more by shearing at the weakening lines than by actual drilling of the cover. Furthermore, it is advisable to position the tongues in a very precise position relative to the weakening lines, which is not always easy and compatible with a high production rate.
  • the invention aims to propose a new type of simple and economical opening method and device, which can be adapted to many types of lid and in particular to those generally used in equipment for manufacturing and packaging thermoformed containers with lids. welded which are cut from cover strips, and not having the aforementioned drawbacks.
  • the manufacturing and packaging equipment particularly targeted are of the so-called F.F.S. (abbreviated designation of three significant English verbs: form, fill, seal).
  • the objects of the invention are achieved by means of a method for providing container lids with piercing tongues by lever effect, said lids being made of a tearable material, a method according to which substantially flat rigid tongues are produced which are fixed on the covers so as to divide them into a drilling arm and an operating arm, characterized in that the tongues are cut from a rigid thermoplastic strip used for the manufacture of thermoformed containers which, after filling with a product, are closed by a flexible and tearable cover made from a strip with a cover superimposed on the thermoplastic strip comprising the receptacles, which a hinge pin is produced on each tongue, which the cut tabs are transferred to the corresponding covers, and then each tongue is fixed by its hinge pin to one of the corresponding covers when these are in the position of closure on containers.
  • the invention also relates to a device for piercing the lid of containers by leverage, known from FR-A-2241466, of the type comprising a rigid tongue that is substantially planar, this lid being made of a flexible and tearable material, and the rigid tongue being provided with a hinge pin which divides it into a drilling arm and an operating arm and which is fixed to the cover.
  • the invention provides that the articulation axis is constituted by a rib of the tongue.
  • the invention provides that the device comprises a second flexible tongue having at least approximately the same extension as the rigid tongue and fixed, on one side to the drilling arm of the rigid tongue and, from the 'other side, at least in the area covered by the operating arm of the rigid tongue, on the cover.
  • the invention also relates to an installation for manufacturing a device for piercing a container lid by leverage, this lid being made of a flexible and tearable material, characterized in that it is associated with packaging equipment of the type which thermoforms containers from a rigid thermoplastic strip, which fills them with a product and which seals them with a flexible strip with a cover and which finally cuts the sealed containers from the thermoplastic strip and the cover strip and that comprises means for cutting substantially flat rigid tongues in the thermoplastic strip, means for providing the tongues with a hinge pin dividing the tongues into a drilling arm and an operating arm, means for transferring the loose tongues from the place of their cutting to the place of their attachment to the corresponding lids and means for fixing said hinge pins on the lids of the containers.
  • the device according to the invention it is entirely possible to dispense with a pre-impression. Naturally, it can however be used, especially when one wishes to obtain a tear along a given line or when the cover is particularly thick.
  • the opening system according to the invention has, apart from its simplicity, other advantages; it does not require a strong and / or sudden movement (which can lead to the product contained in the container being spilled); if the tab is slightly pulled, the container can be closed temporarily by putting it back in position; since the tongue can be pulled out and remain attached to the partially torn cover, a separate pollution-generating element is not created when it is thrown away.
  • the rib is formed integrally with the tongue. More precisely, the rib is formed by a deformation of the tongue obtained for example by stamping.
  • the tongue is based on rigid plastic material, and in particular on the plastic material constituting the container itself.
  • thermoformed containers from a thermoplastic strip provided with a welded and cut cover
  • the tongues are cut from the thermoplastic strip in the free zones situated between the zones for forming the containers.
  • the tabs are cut when the containers are cut.
  • the axis of articulation of the rigid tongue on the cover is produced by the line of separation between the part of the flexible tongue, part fixed on the rigid tongue, and the part of the flexible flexible tongue by compared to said rigid tongue but fixed on the cover.
  • the drilling arm of the latter By tilting upwards the operating arm of the rigid tongue, the drilling arm of the latter necessarily pivots downwards by tearing the cover at this point up to the line of articulation.
  • the cover is torn at the same time along lines following at least approximately the edges of the flexible tab.
  • a hot glue or a lacquer or a fusible varnish or other sticky substance is generally used.
  • the cover can be made of any tearable material, it is advantageous to make it out of a metal sheet, in particular of aluminum, provided if necessary with a heat-bonding film.
  • the rigid tongue and the flexible tongue can be made of any suitable material, but when the containers are produced from a thermoplastic sheet and the cover from an aluminum strip, if necessary provided with a film. iron-on, it is advantageous to manufacture the rigid tabs from the thermoplastic strip and the flexible tabs from the aluminum strip.
  • thermoplastic strip and of aluminum strip situated between the curvilinear or rounded edges of the thermoplastic receptacles when cutting the receptacles from the strip. container and lids strip.
  • the cut and sealed assemblies of the rigid and flexible tongues are recovered and the entire face of the flexible tongue, face turned away from the rigid tongue, is preferably glued to the lid of a sealed container in the zone located at the plumb with the opening of a container.
  • the flexible tongue is glued to the cover - which is made of the same material as the latter - so that the piercing arm of the rigid tongue is located near the edge and, if necessary, near a corner of the container opening.
  • the external free face of the latter can be glued with an appropriate glue and then apply the rigid tongue-flexible tab assembly with the glued side against the corresponding cover but it is also possible to glue the cover area intended to receive the free face of the flexible tongue which on its other face adheres firmly to the drilling arm of the rigid tongue.
  • An installation for manufacturing this piercing device, having a flexible tab and a rigid tab superimposed comprises in particular means for sealing the flexible strip with cover on the rigid strip inside the free areas between the containers in corresponding areas subsequently to the drilling arms of the various rigid tabs, means for cutting sets of rigid and flexible tabs superimposed, means for transferring the cut and sealed sets of rigid and flexible tabs between the cutting station and the place where they are placed in place on the lids of the sealed containers, means of gluing either of the free face of the flexible tab or of the lid zone intended to receive the set of rigid and flexible tabs, as well as means of applying the sets rigid and flexible tabs on the corresponding covers, so that the free face of the flexible tab adheres firmly to the cover at least in the area covered by the operating arm of the rigid tongue.
  • the first embodiment of the drilling device of the invention ( Figures 1 to 7) comprises a tongue 1 substantially planar provided with a hinge pin 2 in the form of a rib 3 on one of its two faces.
  • the tongue 1 is glued to the location of the rib 2 with non-brittle glue 4 on the cover 5 of a container 6.
  • the rib 2 separates the tongue 1 into two arms: one 7 said to maneuver, and the other 8 said to be drilling.
  • the end of the piercing arm 8 starts and pierces the cover 5.
  • the end of the piercing arm 8 is angular (tip 10).
  • the piercing arm widens the tear in the cover until the width 1 of tongue 1 is substantially obtained. level of the rib 2.
  • the piercing arm 8 gradually widens from the tip 10 towards the rib 2 so as to facilitate the gradual widening of the tear.
  • the tear continues generally on the width 1. This operation is particularly easy if, in the case of a composite cover comprising a plastic material, the tear takes place in the direction in which the plastic has been extruded : it is therefore preferable in this case to place the tongue with its rib 2 perpendicular to the orientation of the plastic film.
  • the tongue can be placed so that, during the pivoting of the latter causing the piercing and the beginning of tearing of the cover, the tear meets the lines of embrittlement and, by continuing to pull the tab, the tearing continues along the lines of embrittlement.
  • These can be provided so as to obtain an annular tear which goes all around the cover and making it possible to remove the latter almost entirely.
  • the rib 2 of the tongue 1 can be constituted by an insert fixed to the tongue; it can be formed by the bead of adhesive 4 itself if it is large enough.
  • the rib 2 is formed integrally with the tongue 1 and can be, in the case where the tongue is made of plastic material, a simple deformation (FIG. 3) obtained hot or cold by stamping.
  • the height of the rib 2 is not critical, and can be chosen to be 1 to 2 mm for example.
  • the length of the lever arm a of the drilling arm is less than that b of the gripping arm (FIG. 2), for example in a ratio of one quarter or a third.
  • the latter is provided with a spacer stud 11 on its face 3.
  • This stud can be obtained like the rib 2 by stamping.
  • the stud 11 can be very slightly glued to the cover 5, so as to oppose a fortuitous lifting of the operating arm 7 resulting in accidental drilling.
  • the bonding is however weak enough to yield under the effort of the operator during the intentional manual lifting of the tongue 1.
  • the tongue 1 can be placed, which is of any size depending on the type of opening that is desired practice, at many locations on the cover, it is advantageous to place it, as shown in Figures 1 to 3, so that the end 10 of the drilling area 8 is located in the immediate vicinity of the edge 12 from the edge of the container 6 on which the cover 5 is placed.
  • the point of attack 13 of the bore is very close (for example from 1 to 3 mm) of the edge 12 of the edge of the container, so that this region of the lid is supported by the presence close to the edge, and slightly deformed and the drilling is thus facilitated (shearing effect).
  • the invention applies to any kind of tear-off cover under the action of a rigid wedge piece, the tear of which can be possibly extended by pulling the torn part.
  • thermoformed containers with a heat-sealed non-peelable lid.
  • thermoformed containers from a polystyrene 14 / polyethylene 15 composite strip provided with an aluminum 16 / polyethylene 17 composite cover sealed by autogenous welding on the edges of the container.
  • thermoplastic strip 18 for forming the containers in the star waste. ( Figures 4, 5) remaining between the containers.
  • the containers are cut in a known manner by means of dies and punches not shown, over the entire width of the strip 18 and in steps of two containers for example. These techniques are known to those skilled in the art and will not be further described.
  • the tongues 1 are advantageously formed in the stars situated between the containers, at the level of the cutting station 19 for the containers.
  • the strip 18 carries the thermoformed containers 6 and is covered with the cover strip (for example made of aluminum / polyethylene composite): consequently, by being cut at this station 19, the tongues 1 will be formed from a structure comprising, on the one hand, this thermoplastic composite and, on the other hand, the cover strip, which will allow, by an adequate impression of the cover strip, to make appear on the tongue 1 the desired indications (such as arrows or codified opening instructions) or any patterns.
  • the lower cutting tool 20 used for cutting the containers 6 is provided with embossed punches 21 in the shape of the tongues 1 and located in the interior areas. - containers.
  • the punches 21 cooperate with dies 22, the inlet section of which coincides with the section of the punches 21 so as to allow the tongues 1 to be cut by shearing.
  • These have been previously stamped in the container forming station to form their surface the rib 2 and the stud 11, so that these are perfectly formed tongues which pile up as they are cut in the dies 22 (this stacking of tongues 1 has only been shown on the right matrix of Figure 6).
  • the walls of the matrix are, in general, wider than at their entry section.
  • the tongues 1 are led to the exit of the dies 22 by guides 23 which can in particular be guides produced from several filiform guides enclosing the tongues, which can be specially shaped for this purpose by having concave edges, or even notches, allowing easy guidance by this type of guide.
  • each tongue is taken up by an elastic clamp 24 mounted on a rotary drum 25 around an axis 26 perpendicular to the direction of advance 27 of the strip 18.
  • the elastic clamps 24 can be produced as shown in FIG. 7 by a plate 28 carried by a foot 29 capable of sliding to more or less enter the drum 25.
  • the plate 28 is provided with elastic retaining elements 30 which allow a tongue 1 to snap in and wear against the plate 28.
  • the pliers 24 After having again rotated a suitable angle, the pliers 24 come to deposit the tongues 1 on the lids of the pots 6a, 6b situated above the recovery belt 32, by means of an expulsion rod 33 slidably mounted in each clamp 24.
  • the tongues are taken from the regions between the containers and deposited on the containers at a location generally offset transversely to the location of the removal. It is therefore necessary to take account of this lateral offset, either at the level of the guides 23, or by a device associated with the clamps 24 allowing them to carry out during the rotation of the drum 25 a small lateral transfer.
  • the cutting tools of the station 19 which include means for cutting the last remaining fastener (that is to say the common side 35 corresponding to the side 34 advanced by one step).
  • the containers are then free to be taken up by the belt 32 for storage or the like.
  • Figures 8 to 12 show a second embodiment of the piercing device 101 fixed to the cover 102 of a container 103 whose upper edge 104 is made integral, for example by sealing, the edge of the cover 102.
  • the piercing device 101 is applied to lids which are tearable and which, preferably, cannot be separated easily from the container, for example by peeling.
  • the piercing device 101 comprises a rigid upper tongue 105 and a flexible lower tongue 106 which are superimposed and have substantially the same contours, seen in plan (see FIG. 10).
  • the flexible tongue 106 is firmly fixed to the corresponding part of the rigid tongue 105 which must form the drilling arm.
  • the area for fixing the flexible tongue 106 to the rigid tongue 105 is generally smaller than the free area for the rigid tongue 105.
  • the other face of the flexible tongue 106 that is to say the underside, diverted from the rigid tongue 105 is fixed, preferably over its entire surface and, in any case, along a surface larger than the area for fixing the flexible tongue 106 on the rigid tongue 105, on the cover 102 in particular so that the fixing zone between the flexible tongue 106 and the rigid tongue 105 faces the edge of the opening of the container 103.
  • a drilling arm 107 and an operating arm 108 are produced on the rigid tongue 105 which preferably is larger than the drilling arm 107.
  • the material of the container or the rigid tongue is immaterial provided that the latter can be fixed properly on the flexible tongue. It is the same with regard to the materials of the cover and the flexible tongue provided that the cover can be torn by the rigid tongue and that the flexible tongue can be fixed firmly on the rigid tongue and on the cover and that this fixation withstands the forces applied to the various connections.
  • thermoformed containers When using the piercing device 101 with thermoformed containers and covered with covers of aluminum foil or strip or of a sheet or complex strip comprising a metallic film, it is advantageous to manufacture the rigid tongue 105 from the thermoplastic container strip and the flexible tabs 106 from the aluminum strip.
  • Figure 10 is shown a plan view of a portion of cover strip 110 covering the container strip.
  • the opening 111 of the containers is shown in broken lines, the cutting lines 112 of the edges of the containers with their sealed lids being shown in solid lines.
  • Several grouped receptacles can be separated from each other along the lines of weakness 113.
  • the cover strip 110 is sealed on the edges of the containers in the annular zones 114 between the lines 112,113 on the one hand and the openings 111 on the other hand.
  • the cutting lines 112 between four containers delimit an intermediate star-shaped zone 115 which, in principle, constitutes waste.
  • this intermediate zone 115 is used for the manufacture of the assembly - rigid tongue 105 flexible tongue 106 -.
  • the front part of flexible tab 106 (part of aluminum strip provided with a heat-bonding film located in the intermediate zone 115) is sealed (under pressure and hot) on the corresponding part of the container strip. and subsequently constituting the rigid tongue 105, this sealing preferably being carried out at the same time as the sealing of the covers on the edges of containers in the annular zones 114.
  • the sealing zone 116 of the flexible tongue 106 has been indicated on the rigid tongue 105 by hatching and the internal limit of this zone 116 by a straight line 117 extending perpendicular to the longitudinal axis of the rigid tongue 105.
  • the rigid tongue assembly 105 is cut flexible tongue 106 - along the contours 118 and then preferably glued the entire free face of the flexible tongue 106 before to apply it, in the inverted state, against the cover, so that the pointed part (piercing arm 107) of the rigid tongue is located near the opening 111 of the container.
  • the outside face of the cover and the outside face of the flexible tongue 106 are glued back to back one on the other, these faces having been in the same plane and on the same side in the strip of covers 110 before the cutting of the rigid 105 and flexible 106 tabs (see reference 119 in FIG. 10).
  • the installation for manufacturing the piercing device 101 comprises the means mentioned above which are obviously adapted to the shape of the tongues and to the places of their application.
  • sealing zone 116 corresponds to the zone of the rigid tongue 105, zone forming the piercing arm 107 and the straight 117 will later constitute the right articulation 109 when the piercing device is fixed on the cover 102 of container 103.
  • FIGS. 11 and 12 show an installation for manufacturing a piercing device according to the invention, this installation being associated with or preferably incorporated in packaging equipment 120 of the type which thermoforms containers 103 from a thermoplastic strip 121 which fills them with a product, which seals the filled containers using a flexible strip with lids 110 and which, finally, cuts the filled and sealed containers 103 from the thermoplastic strip 121 and the strip to covers 110.
  • packaging equipment 120 is of a known structure so that it is not necessary to describe it in detail.
  • This equipment 120 successively comprises a heating station not shown of the thermoplastic strip 121, a thermoforming station not shown in which are made cells constituting the containers 103 which still remain attached to said strip 121, a filling station in which the containers 103 are filled with a product, a sealing station 122 in which the cover strip 110 previously placed on the thermoplastic strip 121 so as to cover the openings 111 of the containers 103 and the edges surrounding them, is heat sealed and under pressure, along annular sealing zones 114 on said edges, and a cutting station 123 in which the sealed containers 103 are cut, either individually or in groups, from the thermoplastic strip 121 and the cover strip 110 outside sealing zones 114 along cutting lines 112 before being evacuated, for example using a conveyor belt 124 to an overpacking station not shown.
  • thermoplastic strip 121 is advantageously used for the containers and the cover strip 110 to produce the two-arm lever comprising the rigid tongue 105 and the flexible tongue 106 when there are sufficiently free intermediate zones 115 large between the sealing zones 114 of several neighboring containers and belonging to two successive rows of containers.
  • the lever assembly constituted by a rigid tongue 105 and a flexible tongue 106 by using two superimposed tapes, one of which is made of rigid thermoplastic material and the other of which is made of a flexible material, foldable and heat-sealable, that is to say capable of being heat sealed and pressurized on the strip of rigid thermoplastic material.
  • the installation for manufacturing the drilling device comprises sealing means 125 comprising a heated upper punch 126 and a lower counter-punch 127, the working faces of which have a configuration identical to that of the sealing zones 116 of the tongues 105 and 106 (see also FIG. 10).
  • the punches 126 and the counter punches 127 are provided in the sealing station 122 and carried respectively by the punches 128 and counter punches 129 used to seal the strip of cover 110 on the thermoplastic container strip 121 along the annular zones 114.
  • the rigid tongue 105 - flexible tongue 106 assemblies are then cut either from the above-mentioned pair of ribbons, or from the set of superimposed bands consisting of the container strip 121 and the cover strip 110, this cutting being carried out according to the predetermined shape 118 of the pairs of overlapping tabs 105, 106 and such that the sealing area 116 of each pair of tabs 105, 106 is located to the right of the drilling arm 107 and is separated from the unsealed area by the separation line 117 which will later materialize the hinge pin 109 of the drilling device.
  • the cutting of the superimposed tongues which are heat-sealed one on the other 105, 106 is carried out using cutting means 130 of the type comprising a cutting punch 131 and a fixed bottomless die 132 arranged on either side. 'other of the pair of ribbons or superimposed strips 110, 121.
  • the pairs of cut tabs 105, 106 are discharged through the bottom of the dies 132 either in transfer means 133 constituted either by removable storage cartridges or by guide rails.
  • transfer means 133 constituted either by removable storage cartridges or by guide rails.
  • the matrix 132 is arranged above the pair of bands 110, 121 and the corresponding punch 131 is disposed below said pair of bands at the predetermined locations 136 for the cutting of the pairs of tongues 105, 106.
  • the cutting means 130 can be provided either in the cutting station 123 of the sealed containers or one or more steps of tape advance upstream of said station 123, the step of advancing strip being equal to the width of a cut container, width taken in the direction of advance F, of the pair of strips 110, 121.
  • the punches 131 are controlled synchronously with the cutting elements of the station 123 .
  • the guide rails 133 can be produced by tubes having a cross section adapted to the configuration of the pairs of tongues 105, 106 and shaped so as to have a semi-circular central part 136 and two vertical lateral parts 137, 138 one of which (137) opens at its lower end above the bottom of the matrix 132 and the other (138) of which is closed at its lower end by a window pusher 139 of a known type (for example of the kind of pushers used in slide projection apparatus) and is arranged near the place of depositing a pair of tabs 105, 106 on the area of the previously glued lid.
  • a window pusher 139 of a known type (for example of the kind of pushers used in slide projection apparatus) and is arranged near the place of depositing a pair of tabs 105, 106 on the area of the previously glued lid.
  • the window pusher 139 is in a horizontal position and spaced from the cover strip 110 by a distance at least slightly greater than the thickness of a pair of tabs 105, 106 which, during its transfer into the slide 133 a been turned 180 °.
  • an applicator piston 140 which after having pushed a pair of tabs 105, 106 out of the window where it was retained on its edges by elastic means, press it against the previously glued area of the cover strip 110, area situated directly above the opening of a container 103. It will be noted in FIGS.
  • each punch cutting movement 131 will automatically introduce a pair of tongues 105, 106 into the pusher window 139 at the other end of the slide 133.
  • the type of slide 133 cooperates at one end with the open bottom of a cutting die and at the other end with a window pusher 139 can also be used when the cutting means 130 do not cooperate with a pair of bands 110, 121, but with a pair of ribbons independent of said pair of bands. This could in particular be the case when the free zones 115 between the edges of containers 103 are too small to allow the pairs of tongues 105, 106 to be cut at these locations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Claims (16)

1. Verfahren zum Anbringen von Durchstechhebellaschen an Behälterdeckeln aus zerreissbarem Material, bei dem die steifen Laschen (1; 105) im wesentlichen eben ausgeführt werden, die Laschen so auf den Deckeln (5; 102) befestigt werden, dass sie in einen Durchstecharm (8; 107) und in einen Bedienungsarm (7; 108) unterteilt sind, dadurch gekennzeichnet,
- dass die Laschen (1; 105) aus einem steifen thermoplastischen Band ausgeschnitten werden, das zur Herstellung der thermogeformten Behälter (6; 103) dient, die nach Auffüllen mit einem Produkt durch einen biegsamen und zerreissbaren Deckel (5; 102) abgeschlossen werden, der ausgehend von einem über dem thermoplastischen Band (18; 121), das die Behälter enthält, angeordneten Deckelband (110) hergestellt wird,
- dass an jeder Lasche (1; 105) eine Schwenkachse ausgebildet wird,
- dass die ausgeschnittenen Laschen (1; 105) zu den entsprechenden Deckeln (5; 102) geführt werden, und
- dass anschliessend jede Lasche über ihre Schwenkachse (2; 107) an einem der entsprechenden Deckel (5; 102) befestigt wird, während die Deckel in Verschliessstellung über den Behältern (6; 103) angeordnet sind.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die steifen Laschen (1; 105) an den Deckeln (5; 102) befestigt werden, während die Behälter (6; 103) noch an dem steifen thermoplastischen Band (18,121) hängen.
3. Verfahren nach einem der Ansprüche 1 und 2, bei dem das thermoplastische Band (18; 121) Bereiche zur Bildung der Behälter und freie Bereiche (115) zwischen den zur Bildung der Behälter bestimmten Bereichen aufweist, dadurch gekennzeichnet, dass die Laschen (1; 105) aus den freien Bereichen (115) ausgeschnitten werden und dass die ausgeschnittenen Laschen (1, 105) zu den entsprechenden Deckeln (5; 102) derart geführt werden, dass sie transversal bezüglich des Orts ihrer Entnahme wegtransportiert werden.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Schwenkachse (2) gebildet wird, indem eine Nut auf der Lasche (1) angebracht wird und dass die Laschen (1) über diese Nut an den Deckeln (5) befestigt werden.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Laschen (1) während ihres Transports zwischen dem Ort (21, 22), an dem sie ausgeschnitten werden, und den Deckeln, an denen sie befestigt werden, mit Klebstoff versehen werden.
6. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Schwenkachsen (109) der steifen Laschen (105) erzeugt werden, indem die steifen Laschen aneinanderstossend mit einer biegsamen Lasche (106) versehen werden, die etwa die gleichen Ausmasse hat wie die steifen Laschen (105) und die auf einer Seite nur am Durchstecharm (107) an den steifen Laschen befestigt ist und die auf der anderen Seite mindestens am Bedienungsarm der steifen Laschen (105) an den Deckeln (102) befestigt ist.
7. Verfahren nach den Ansprüchen 6 und 3, dadurch gekennzeichnet, dass die steifen Laschen (105) aus dem steifen thermoplastischen Material des die Behälter (6; 103) enthaltenden thermoplastischen Bandes (18; 121) und die biegsamen Laschen (106) aus einem zusammengesetzten biegsamen und thermoklebenden Material, aus dem das Deckelband (110) besteht, hergestellt werden, dass das Deckelband (110) mit dem thermoplastischen Band (121) im Inneren der freien Bereiche (115) zwischen den Behältern (103) in Bereichen (116) thermoverklebt wird, die dazu bestimmt sind, später den Durchstecharm (107) der steifen Laschen (105) zu bilden, dass aus den übereinanderliegenden Bändern (121, 110) die aus den steifen Laschen (105) und den weichen Laschen (106) bestehenden Einheiten, die insbesondere diese Bereiche (116) beinhalten, ausgeschnitten werden, dass diese Einheiten (106, 107) während ihres Transports zwischen dem Ort des Ausschneidens (130) und dem Ort ihrer Befestigung auf den Deckeln (102) um 180° gedreht werden und dass diese Einheiten mit der biegsamen Lasche (106) mittels eines Klebstoffs auf den Deckeln (102) angeklebt werden.
8. Verfahren nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, dass bei jedem Verfahrensschritt an einer ersten Station das Dekkelband (110) an den Rändern (114) der Behälter auf dem thermoplastischen Band (121) und in den Bereichen (116), die dazu bestimmt sind, später den Durchstecharm (107) zu bilden, angeklebt wird, dass an einer zweiten Station eine kleine Menge Klebstoff (134) auf den Deckeln der Behälter (103) angebracht wird, dass bei einer dritten Station die aus den steifen Laschen (105) und den biegsamen Laschen (106) bestehenden Einheiten auf den Deckeln (102) angebracht werden, dass bei einer vierten Station die aus einer steifen Lasche (105) und einer biegsamen Lasche (106) bestehenden Einheiten vor ihrem Transport zu der dritten Station ausgeschnitten werden und dass bei einer fünften Station (123) die fertigen Behälter ausgeschnitten werden.
9. Vorrichtung zum Durchstechen von Behälterdeckeln durch Hebelwirkung mit einer im wesentlichen ebenen steifen Lasche (1), wobei der Deckel (5) aus einem biegsamen und zerreissbaren Material hergestellt ist und die steife Lasche (1) mit einer Schwenkachse (2) versehen ist, die die steife Lasche in einen Durchstecharm (8) und einen Bedienungsarm (7) unterteilt und die am Deckel (5) befestigt ist, dadurch gekennzeichnet, dass die Schwenkachse (2) von einer Nut (2) der Lasche (1) gebildet wird.
10. Vorrichtung zum Durchstechen von Behälterdeckeln mittels Hebelwirkung mit einer im wesentlichen ebenen steifen Lasche (101), wobei der Deckel (102) aus einem biegsamen und zerreissbaren Material besteht, die Lasche mit einer Schwenkachse (109) versehen ist, die die Lasche in einen Durchstecharm (107) und einen Bedienungsarm (108) unterteilt und die am Deckel (102) befestigt ist, gekennzeichnet durch eine zweite biegsame Lasche (106), die mindestens näherungsweise dieselben Ausmasse wie die steife Lasche (105) hat und die mit einer Seite auf dem Durchstecharm (107) der steifen Lasche (105) und auf der anderen Seite mindestens in dem durch den Bedienungsarm (108) bedeckten Bereich der steifen Lasche (105) auf dem Deckel (102) befestigt ist.
11. Einrichtung zur Herstellung einer Vorrichtung zum Durchstossen von Behälterdeckeln mittels Hebelwirkung, wobei der Deckel aus biegsamem und zerreissbarem Material besteht, dadurch gekennzeichnet, dass die Einrichtung eine Verpackungsausrüstung (120) aufweist, die Behälter (103) aus einem steifen thermoplastischen Band thermoformt, die diese Behälter mit einem Produkt auffüllt und sie mit einem biegsamen Deckelband (110) versiegelt und die letztlich die versiegelten Behälter (103) aus dem thermoplastischen Band (121) und dem Deckelband (110) ausschneidet und durch Vorrichtungen (20, 21, 22; 130, 131, 132) zum Ausschneiden im wesentlichen ebener steifer Laschen (1; 105) aus dem thermoplastischen Band (121), durch Vorrichtungen (126, 127) zum Ausbilden einer Schwenkachse (2; 109) in den Laschen (1; 105), die die Laschen (1; 105) in einen Durchstecharm (8, 107) und einen Bedienungsarm (7, 108) unterteilt, durch Vorrichtungen (23, 24, 25, 28, 29; 133, 136, 137, 138, 139) zum Transportieren der ausgeschnittenen Laschen (1, 105, 106) von dem Ort, an dem diese ausgeschnitten wurden an den Ort ihrer Befestigung auf den entsprechenden Deckeln (5; 102) und durch Vorrichtungen (31; 135) zum Befestigen der Schwenkachsen (2, 109) an den Deckeln (5; 102) der Behälter (6; 103).
12. Einrichtung nach Anspruch 11, dadurch gekennzeichnet, dass die Vorrichtungen zum Versehen der Laschen mit einer Schwenkachse aus Vorrichtungen zum Bilden von Nuten (2) bestehen, die an der Station zur Bildung der Behälter (6) vor den Vorrichtungen (20, 21, 22) zum Ausschneiden der Laschen (1) angeordnet sind.
13. Einrichtung nach einem der Ansprüche 11 und 12, dadurch gekennzeichnet, dass die Vorrichtungen zum Ausschneiden (20, 21, 22; 130, 131, 132) der Laschen (1; 105) ein Abschneidegesenk ohne Boden (22; 132) aufweisen, das in einem Führungsglied (23; 137) der Transportvorrichtung (23,24,25,28; 133) mündet.
14. Einrichtung nach einem der Ansprüche 11 bis 13, gekennzeichnet durch eine Klebestation (31) in der Bahn der Transportvorrichtung (23, 24, 25, 28, 29), die Eingreifelemente (30) und Vorrichtungen (33) zum Anbringen der Laschen (1) auf den Deckeln (5) aufweisen.
15. Einrichtung nach Anspruch 11, gekennzeichnet durch Vorrichtungen zum Versehen der Laschen (105) mit einer Schwenkachse (109), Vorrichtungen (125) zum Versiegeln des biegsamen Deckelbandes (110) auf dem steifen Band (121) im Inneren der freien Bereiche (115) zwischen den Behältern (103) in Bereichen (116), die später den Durchstecharmen der verschiedenen steifen Laschen (105) entsprechen, Vorrichtungen zum Ausschneiden (130, 131, 132) von aus steifen und biegsamen übereinandergelegten Laschen (105, 101) bestehenden Einheiten, Transportvorrichtungen (133) für die ausgeschnittenen und versiegelten aus den steifen und biegsamen Laschen (105, 106) bestehenden Einheiten zwischen der Ausschneidestation (130) und dem Ort, an dem diese Einheiten auf den Deckeln der versiegelten Behälter placiert werden, Vorrichtungen (135) zum Aufbringen von Klebstoff entweder auf die freie Seite der biegsamen Lasche (106) oder auf den Bereich des Deckels, auf dem die Einheit, bestehend aus der steifen und der biegsamen Lasche (105, 106), aufgebracht werden soll, sowie durch Vorrichtungen (139, 140) zum Anbringen der Einheiten, bestehend aus der steifen und der biegsamen Lasche (105, 106), auf den entsprechenden Deckeln, derart, dass die freie Seite der biegsamen Lasche (106) fest am Deckel (102) mindestens in dem Bereich haftet, der durch den Bedienungsarm (108) der steifen Lasche (105) abgedeckt ist.
16. Einrichtung nach Anspruch 15, dadurch gekennzeichnet, dass die Versiegelungsvorrichtung (125) ein oberes geheiztes Gesenk (126) und einen Unterstempel (127) aufweisen, deren Arbeitsflächen eine zu den Versiegelungsbereichen (116) der steifen Laschen (105) auf den biegsamen Laschen (106) identische Konfiguration aufweisen, und dass das Gesenk (126) und der Gegenstempel (127) in der Versiegelungsstation der Behälter (122) vorgesehen sind, wobei das Gesenk und der Gegenstempel von dem Gesenk (128) und dem Gegenstempel (129) getragen werden, die dazu verwendet werden, das Deckelband (110) auf dem thermoplastischen Behälterband (121) in ringförmigen Bereichen (114) zu versiegeln.
EP82400547A 1981-03-27 1982-03-26 Durchstechvorrichtung und -verfahren für Behälterverschluss und Einrichtung zur Herstellung der Vorrichtung Expired EP0062571B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8106252 1981-03-27
FR8106252A FR2502590A1 (fr) 1981-03-27 1981-03-27 Dispositif d'ouverture d'un recipient a couvercle, procede et installation de fabrication du dispositif
FR8110727 1981-05-29
FR8110727A FR2506725A1 (fr) 1981-05-29 1981-05-29 Dispositif de percee d'un couvercle de recipient, procede et installation de fabrication d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP0062571A1 EP0062571A1 (de) 1982-10-13
EP0062571B1 true EP0062571B1 (de) 1985-09-25

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EP82400547A Expired EP0062571B1 (de) 1981-03-27 1982-03-26 Durchstechvorrichtung und -verfahren für Behälterverschluss und Einrichtung zur Herstellung der Vorrichtung

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EP (1) EP0062571B1 (de)
AU (1) AU8196982A (de)
CA (1) CA1198065A (de)
DE (1) DE3266482D1 (de)
ES (1) ES527304A0 (de)

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CA1266013A (en) * 1984-08-28 1990-02-20 Toyo Seikan Kaisha, Ltd. Easy-open can lid
FR2577897B1 (fr) * 1985-02-22 1987-11-27 Morin Raymond Sa Opercule multi-couche etanche non pelable muni d'un dispositif d'ouverture controlee, procede de fabrication d'un tel opercule et dispositif pour la mise en oeuvre de ce procede
GB2178965B (en) * 1985-07-30 1988-08-03 Glaxo Group Ltd Devices for administering medicaments to patients
US4819406A (en) * 1987-09-25 1989-04-11 Sanford Redmond Inc. Compact form-fill-seal machine for automatic production of sealed packages
US5080263A (en) * 1988-03-01 1992-01-14 Nestec S.A. Opener for packages
US4938362A (en) * 1988-03-01 1990-07-03 Nestec S.A. Opener for packages
GB9825509D0 (en) * 1998-11-20 1999-01-13 Ncr Int Inc Dispensing container
ES2216952T3 (es) * 1999-09-09 2004-11-01 Dairygold Technologies Limited Proceso para el envasado de productos alimenticios.
EP2804813B1 (de) * 2012-01-20 2016-11-09 Å&R Carton Lund AB Vorrichtung und verfahren zum anbringen von deckeln auf behältern
JP2013216329A (ja) * 2012-04-04 2013-10-24 Yokohama Rubber Co Ltd:The パンク修理液の収容容器

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US2569905A (en) * 1948-03-02 1951-10-02 Charles V Spinnenweber Attached can opener
US2642203A (en) * 1952-04-24 1953-06-16 Frank G Seemuller Can opener
US2828883A (en) * 1954-10-01 1958-04-01 John F Holler Containers
US3289880A (en) * 1964-09-30 1966-12-06 Wilkich John Container with integral opener
US3371818A (en) * 1966-05-27 1968-03-05 Continental Can Co Plastic tab and inner tape for easy opening can end
FR1494427A (fr) * 1966-09-22 1967-09-08 Gregory Ind Couvercle de boîte à tirette d'ouverture et son procédé de fabrication
GB1477828A (en) * 1973-08-21 1977-06-29 Plastona Waddington Ltd John Plastics material lids for and closing containers
US3851441A (en) * 1973-09-25 1974-12-03 First Dynamics Inc Machine for producing filled two-lidded plastic containers with a drinking straw and a puncturable depression in each lower lid
US4130219A (en) * 1977-11-21 1978-12-19 The Continental Group, Inc. Bead supported tab for non-detachable ends
US4205760A (en) * 1979-02-12 1980-06-03 The Continental Group, Inc. Non-detach beverage end
US4331256A (en) * 1981-03-27 1982-05-25 Container Corporation Of America Lid dispensing arrangement

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Publication number Publication date
EP0062571A1 (de) 1982-10-13
ES8406350A1 (es) 1984-07-16
US4444610A (en) 1984-04-24
DE3266482D1 (en) 1985-10-31
AU8196982A (en) 1982-09-30
ES527304A0 (es) 1984-07-16
CA1198065A (fr) 1985-12-17

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