WO1989011421A1 - Recipient ferme - Google Patents

Recipient ferme Download PDF

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Publication number
WO1989011421A1
WO1989011421A1 PCT/EP1988/001203 EP8801203W WO8911421A1 WO 1989011421 A1 WO1989011421 A1 WO 1989011421A1 EP 8801203 W EP8801203 W EP 8801203W WO 8911421 A1 WO8911421 A1 WO 8911421A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective layer
container
tear
wall
handle
Prior art date
Application number
PCT/EP1988/001203
Other languages
German (de)
English (en)
Inventor
Jacques Boisson
Paul A. Mueller
Original Assignee
Jacques Boisson
Mueller Paul A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jacques Boisson, Mueller Paul A filed Critical Jacques Boisson
Publication of WO1989011421A1 publication Critical patent/WO1989011421A1/fr

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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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0098—Means for preventing dust contacting pouring opening, e.g. a cover over the tear panel

Definitions

  • the invention relates to a closed container for food, in particular for a liquid, with a closing part covering an opening or drinking opening on a top wall, the closing part covering the opening and an adjacent wall area enclosing an angle with the top wall by a adhesive, removable protective layer is covered.
  • Such containers are known from LU-A-78 308 or GB-A-2156772.
  • the task was to improve the hygiene conditions on such containers, and in both cases the proposed solution was to apply the protective layer over the largest surface area of the closure part, i.e. the area of the top surface that should facilitate tearing open by a predetermined breaking point.
  • the handle (for tearing open) and the adjoining piece of the locking egg remained free.
  • the protective layer on the top surface which also covers the area around the mouth of the mouth on the adjacent wall, has an approximately triangular covering of predetermined thickness and is generally made of a plastic (in the broadest sense) is now stored such a container for a time in a rega of a supermarket, it is inevitable that the plastic attracts dust.
  • the dust deposit will be larger in those places where it finds a protected corner, i. at the angle between the unprotected top wall and the edge of the protective layer.
  • the above consideration shows that the measure that should actually improve the hygiene conditions does the opposite.
  • the present invention is therefore based on the object of solving the problem that still lies ahead of improving the hygiene conditions on containers of the type mentioned at the outset.
  • the protective layer at least half of the top wall and / or - in the case of the closure being designed as a tear-open closure in which a handle is fastened to the closure part in a fastening region - at least also
  • the invention is in no way limited to containers with tear closures, but in any case a substantial improvement in the conditions is achieved, as will be explained below.
  • the fastening area of the handle is also covered, the result is Several advantages at once. On the one hand, it is no longer so easy to lift the handle - more or less involuntarily - during transport, storage and handling, or even by careless customers by touching it and easily tearing it. One should not forget that the fastening area is subject to a particularly high moment when a pull is exerted on the handle. These moments can now lead to tearing of the cover wall material. Simply because the involuntary pull on the handle is made more difficult, we can avoid such tears, which also make it easier for bacteria to penetrate the egg. On the other hand, the protective layer covers just that area where such cracks can more easily occur, so that even if such a crack forms, bacteria are prevented from penetrating the container.
  • Protection is safer if the protective layer covers the entire top wall, because then the entire wall is kept hygienically clean.
  • the protective layer is essentially cup-shaped with a jacket wall and an at least half of the existing bottom wall. Such a design protects above all the lateral areas of the lips of the lower jaw, with playful tearing on the shelves being made even more difficult by careless buyers.
  • the feature of claim 3 prevents separate waste from occurring since the protective layer always remains on the container. Attaching to the top wall is relatively easy, since a drop of glue can be applied to the upper part of the container during manufacture, to which the protective layer sticks.
  • the attachment to a wall area can be done very easily, for example, by being scratched open or also by gluing.
  • the attachment to the closure part makes sense for those containers in which the closure part itself is held captive on the top wall. In the USA, for example, a standard has been provided for some time, according to which the metal zippers cannot be completely torn off the top wall and therefore cannot be thrown away ready. Fastening the shoe layer there also makes it captive.
  • the inventive design according to e) relates to those cases in which the protective layer is cup-shaped, the jacket wall of the cup, for example, on the container wall is shrinking and sticking.
  • This variant is also relatively simple to manufacture and requires no additional material such as adhesive, tapes or the like.
  • the variant according to claim 4 is - as already mentioned - useful to use in those containers that have a ring-shaped tear handle.
  • the captivity results from a type of latching of the protective layer in the captive tear-open handle, which in turn can be accomplished relatively easily during manufacture.
  • An arrangement of the embossing lines in the star enables the protective layer to be torn open simply and completely.
  • the thermally introduced bending stresses of the sections obtained thereby further facilitate the complete opening, whereupon the protective layer e.g. can be pushed down on the jacket wall of the container and remains completely on him.
  • the opening process is made even easier by the feature of claim 10.
  • the embodiment of the variant according to claim 11 facilitates mechanical production, wherein, for example, paper-like materials can also be used as a disk-shaped part. In this case it would even be conceivable to leave only the sleeve on the can and to throw the disk separately.
  • the training according to claim 12 facilitates the opening of the protective layer.
  • the features of claim 13 allow the protective layer a to be easily attached, while the feature of claim 14 ensures that after opening the upper part to open the protective layer, it is not completely separated from the rest of the part. If the remaining part is permanently attached to the Dos, then the upper part is simply opened; however, if it can be moved after opening, it can be pushed down along the container wall, leaving both teas on the container.
  • the design according to claim 15 allows the protective layer to be easily mounted on the container by simply plugging it on. After removal of the protective layer, it can be attached to the bottom of the container and thus remains captive.
  • the feature of claim 16 provides those variants and protection in which the protective layer remains on the container wall, where they are held essentially by internal stress.
  • the variant according to claim 17 also enables this shifting relatively simply by converting a turn into a translational movement, a friction-increasing coating making it easier to unscrew because one slips less.
  • the protective layer it is within the scope of the invention to firmly bond the protective layer to the tear-open handle, so that when the protective layer is removed the tear-open handle can be torn open at the same time, or that the protective layer or parts thereof serve as an extension of the tear-open handle.
  • Such an approach can be fastened to the closure part in a conventional manner by means of rivets or can itself be designed as a rivet.
  • the cap can also be serrated to enlarge the adhesive surface.
  • the tear-off force is then transferred directly over the protective layer, which is therefore full constantly takes over the function of the pull handle.
  • the invention thus also eliminates the risk of injury since the fingers are prevented from being touched by the sharp metal edge of the closure when it is opened.
  • a ring-shaped tear-open handle can be attacked by the closed protective layer, in that the protective layer lies so closely and tightly on the tear-open handle or encloses it that it can be easily gripped through the protective layer remains.
  • Such protective layers can also consist of material which is preferably similar to natural rubber, e.g. made of latex, which can be applied by dipping or spraying, or from a soft shrink film, e.g. Made of polyethylene or the like.
  • a soft shrink film e.g. Made of polyethylene or the like.
  • Polyethylene in turn has the advantage over other plastics that it is food-neutral and yet toxicologically harmless.
  • such protective layers can also be applied over the entire container - e.g. in the immersion process.
  • the gluing process could then be omitted.
  • a cup-shaped cap forming the protective layer is provided on the inside with a pasty, essentially non-shrinking adhesive in the region of the tear-open handle and is then placed over the container in such a way that the adhesive, which later adheres to the protective layer, encloses the pull-open handle and thus inseparably connects to the protective layer.
  • the adhesive does not even have to stick to metal which would even be disadvantageous if it also adhered to the top wall.
  • wrapping the tear-open handle with adhesive or plastic alone is sufficient to transmit force to the tear-open handle.
  • Such a method is also possible, for example, with a Heis hot-melt adhesive and a cup as a protective layer, the bottom of which is provided with a recess.
  • De hot melt adhesive is introduced after the cup has been placed on the top wall or the tear-open handle in such a way that it forms a unit with the edge of the bottom-free location of the protective layer and thus the protective base.
  • the best way to distribute the hot melt adhesive in such an application is easiest by means of - optionally preheated - stamp which is adapted to the contour of the container or the tear-open handle.
  • the cup blank can also be formed a tube which is flanged shortly before or during the application of the adhesive.
  • a further embodiment within the scope of the invention arises when a cup-shaped protective layer that is initially turned upward is also attached when the tear-open handle is riveted, which is put over the container after final assembly and filling and optionally shrunk on.
  • a tearing of such a protective layer would chermassen moving the Aufreissgriff high tear and vice versa, so that 'may even be dispensed with in such a Fal to save material under certain circumstances the Aufreissgriff.
  • the rivet with which the protective layer is fastened to the closure must, however, be of a wide design in accordance with the properties of the plastic.
  • the cup-shaped protective layer such a rivet, as mentioned above, can also be attacked by adhesive or a plastic encapsulation.
  • predetermined tear lines are provided in the protective layer, which facilitate the cutting. Touching the protective layer for better tearing open is through slits or incisions at the lower edge, as these slits or incisions result in protruding edges when shrinking later.
  • the design according to the invention also enables a different method for applying a protective layer to a container.
  • a hot melt adhesive can now be used is released from a heatable nozzle with simultaneous relative movement between the container and the nozzle.
  • the relative rotation can be caused both by the fact that the container is driven to rotate while the nozzle is stationary and by the other way round that the nozzle is moved while the container is stationary.
  • a translatory movement is also possible, as is the combination of a movement of the container and nozzle, each of these movements again being able to be in a different direction of movement.
  • the relative movement is a rotary movement about the container axis, so that the uniformity of the application of the protective layer is best guaranteed.
  • the captivity of the protective layer can also be ensured if necessary.
  • Figure 1 shows a container in the manner of a canned drink with a protective layer indicated by dashed lines.
  • Figure 2 shows the container of Figure 1, but with the closure partially open; 3 to 7 further embodiments according to the invention; 8 to 10 representations to explain the method according to the invention; 11 to 13 representations of others according to the invention
  • Container 16 top views of different drinking opening variants with one or more fastening areas;
  • FIG. 23 shows a side elevation through a container according to FIG. 22
  • 26 shows a one-piece cup-shaped protective layer with star-shaped embossing lines
  • 29 shows a cup-shaped protective layer with a horizontal pull tab
  • FIG. 31A shows the associated protective layer
  • 32 shows a section through a cup-shaped protective layer with a locking lug
  • FIG. 33 shows a container with a cup-shaped protective layer and this pull-through handle.
  • Fig.l shows a container 1 closed on all sides for a drink.
  • the container 1 has a top wall 2, of which egg part of the surface of the top wall 2 by a punched-in predetermined breaking point or line of weakness 6 forms the closure part 5 of a zipper 3.
  • the zipper has in the usual way a handle in the form of a zipper 4, which is attached to the closure part 5 in a fastening area 10, for example with the aid of a rivet 13 or in another conventional manner.
  • a drinking opening 7 is exposed in the direction shown in FIG. 2.
  • a drinking area 11 adjoining the closure part 5 as well as one immediately adjacent to the edge area 9 and one over the latter to the top wall 2 at an angle of, e.g.
  • the adjacent jacket wall 8 is covered by a protective layer 20, so that an approximately triangular protected area results closely around the drinking opening 7. It is overlooked that the fastening area 10 is subject to particular stress, in particular if the tear-open handle 4 is lifted during transport, during handling for storage (e.g. finishing on shelves) or by careless buyers or wanton children.
  • the protective layer 20 is enlarged according to the invention and should (according to an alternative) at least also cover the fastening area 10, preferably also part of the handle or tear-open handle 4, as can be seen from FIG. 1. It almost inevitably results in the fact that not only the narrow pouring area in the extension of beads 14 delimiting the drinking area 11 is covered by the protective layer 20, but also the full mouthpiece area 12.
  • Such beads 14 partially protect against any dust deposits on the top wall 2 falling into the drinking opening 7, but it is advantageous if the area outside the drinking areas 11 delimited by the beads 14 is covered by the protective layer 20, and so on to keep the largest possible environment hygienically clean.
  • the protective layer 20 should be of such a material quality that it is impervious to contamination and can easily be detached from the container in the event of use.
  • Various plastic materials such as polyethylene and other thermoplastics, metal foils or expediently coated paper, or a material which can be applied by a thermoplastic process, as will be described later, can be used if the material is not self-adhesive an adhesive is used to secure the protective layer 20 to the sleeve surface, in particular with antiseptic properties.
  • the protective layer 20 consists of one piece. However, this is by no means a requirement, even if it will be the preferred version. If at least part of the handle or tear-open handle 4 protrudes below the protective layer 20, this layer can be easily removed by means of the tear-open handle 4 at the same time as the drinking opening 7 is torn open. Since the surface of the protective layer 20 is now enlarged with the design according to the invention, it is only possible to print this surface, for example for instructions for use; f the information about when the content is to be used; when it was filled, etc. Such an embodiment is shown in FIGS. 3 and 15, in which the protective layer 20 bears a text field.
  • the writing field 22 can be formed directly by the protective layer 20 or by a reinforcing strip, for example made of paper. For some applications, it may be desirable to provide a reinforcement strip 22 without the intention of printing on it.
  • FIG. 4 shows that it is sufficient if the protective layer is only connected to the container 1 via linear or punctual adhesive points 24 or 25, which on the one hand saves on adhesive, but on the other hand also makes it easier to detach the protective layer. Nevertheless, it is preferred if the adhesive is applied linearly at least on the contour edges of the protective layer 20, as can be seen in FIG. 4, in order to avoid that dust etc. can get under the protective layer 20.
  • FIG. 5 shows a particularly preferred embodiment, in which at least half of the top surface 2 of the container 1 is covered by the bottom wall 37 of the protective layer 20.
  • the fastening area 10 for the tear-open handle is also covered. If the handle 4 were now raised, this can only be done willfully, and this fact would be indicated by the deformation of the protective layer 20 or by its detachment from the surface of the top wall 2.
  • the exposed surface of the top wall 2 is far away from the closure part 5 in this way that any accumulating dust on this free surface cannot get into the drinking opening.
  • a jacket wall 38 also protects the area below the drinking opening.
  • the enlargement of the surface of the top wall 2 covered by the protective layer 20 results in a virtually automatic enlargement of the protective layer 20 in the mouth area that comes into contact with the lower lip. Regardless of how drinking containers are held or poured out, a wide area around the mouth attachment area 12 is also covered on the jacket wall 8.
  • the protective ski 20 completely covers the top wall 2.
  • any accumulated dust or the like is removed with the protective layer 20 even before long use. Therefore, compliance with hygienic conditions is ensured under all circumstances.
  • a problem may arise with respect to the accessibility of the pull handle 4.
  • the problem is solved in such a way that a slot 28 is provided through which a part of the handle 4 can pass.
  • This slot 28 can now be made on the one hand by cutting or punching (if the protective layer 20 is prefabricated in its Kal form shown).
  • the protective layer covers at least half, but preferably the entire top wall 2, as is the case with the embodiment according to FIG. 6, it may be worthwhile to facilitate the tearing open or pulling off by additional measures.
  • this could be done, for example, by attaching a tear-off tab or by welding a tear-open tape.
  • the same can of course be done for the section of the protective layer 20 covering the drinking area 11. 6 now shows a solution in which the protective layer 20 is provided with a predetermined tear line 29 away from its leading edge facing the handle 4, which line i a general of an embossing line, which is formed, for example, by hot wins by means of a correspondingly shaped stamp, but can also be formed, for example, by a perforation.
  • the protective layer 20 also travels along the predetermined tear line 29, so it is up to you to choose the line 29 in such a way that either the entire protective layer 2 is then removed when it is pulled off, or only the part delimited by line 29.
  • line 29 should be chosen such that the protective layer 20 not only clears the immediate drinking area, but also a certain environment, such as this, due to the rag of the protective layer 20 thus separated Fig. 6 can be seen.
  • FIG. 7 shows a protective layer 20 which envelops the entire upper part of the container 1.
  • the tear-open handle is again expediently accessible via the slot 28, as was described with reference to FIG. 6.
  • the tear-open aid for the protective layer 20 is solved in another way: at least one, preferably two, cutting threads 31, e.g. made of thread or wire, which sit firmly in the protective layer 20 and cut the protective layer 20 along the thread course when the pull handle 4 is actuated.
  • An embodiment in which the entire container 1 is surrounded by the protective layer 20 is easily advantageous on the basis of FIG.
  • a protective layer 20 according to FIG. 7 is also outstandingly suitable for configurations according to FIGS. 1 and 15, in which the protective layers of adjacent containers are connected to one another by webs 41.
  • webs 41 For example, according to FIG. 14, there is a web 41a between the protective layer 20a and the protective layer 20b, which can also be seen from FIG.
  • This connecting web 41 consists of the same mate rial as the protective layers 20a, b, c and is integrally formed with this (for example, by joint injection molding).
  • Flat connecting webs 41b result between protective layers 20b and 20c if prefabricated foils are used for this purpose, which are placed over an arrangement of containers and then connected to them by shrinking or the like. Such methods are known in the so-called six packs, in which such films are placed over 6 containers for easy transport.
  • the foils are provided in the area of the container zen with a recess 40 which are removed with hot-melt adhesive or liquid plastic, as a result of which the edge 36 of the recesses 40 is connected to the fastening region 10.
  • the protective layers 20a, b according to FIG. 15 are preferably a - e.g.
  • the transport packaging according to the invention eliminates the danger which caused excitement in maritime states. There six-pack films got into the sea. Fish slipped through the round openings of the six-pack film and wedged or died as a result. Such che round openings are no longer available.
  • the protective layer 20b on the left-hand side of FIG. 15 shows an inscription field 22.
  • Such an inscription field 22 is understood as an advertising medium or as an information area for dealers or consumers.
  • FIG. 20 and 21 another Gedan according to the invention for the application of a cup-shaped protective layer 20 is provided.
  • the protective layer 20 is firmly bonded there with a stopper 5, for example also in one piece therewith designed so that tearing off the protective layer 20 also causes the closure part or plug 5a to tear open.
  • a stopper 5 for example also in one piece therewith designed so that tearing off the protective layer 20 also causes the closure part or plug 5a to tear open.
  • Such constructions are relatively cheap to manufacture, especially since the stamping and riveting of separate pull-open handles can be omitted.
  • the tear-open grip that part of the plug 5a which usually has to be attacked to remove the plug 5a and therefore protrudes from the top wall 2.
  • Fig.21 you can see that position where the stopper 5a is already out of the drinking opening 7.
  • the drinking opening 7 can assume any shape in this as in all other constructions; it is also possible to provide a plurality of drinking openings, as is indicated, for example, in FIG. 16 by 7a, b, c.
  • the stopper 5a could have such a large area that it replaces the top wall 2, so that the protective layer 20 forms the closure to a certain extent at the same time.
  • the wall thickness of the protective layer 20 must be chosen to be correspondingly thick in order to hold the container 1 to be able to withstand occurring pressures.
  • tel cuts 42a and b in the lower region of the man, which are arranged vertically in the case of the left embodiment and horizontally in the case of the right embodiment. If these cuts 42a, b are made prior to any shrinking, the edge region of the jacket wall 38 is raised slightly and can therefore be gripped easily with the fingertips. In addition, the cuts 42a also usefully form the beginning of a line of weakness in the protective layer. The method indicated in FIG.
  • 11 for the production of a container according to the invention is essentially based on the fact that on a filled and closed can 1 (left) with an annular tear-open handle 4 approximately in the middle, ie approximately the fastening area of the tear-open handle 4, a heap 43 a of hot melt adhesive or liquefied Plastic is applied after a cup-shaped protective layer 20 with a recess 40 in the bottom has been placed over it. Subsequently, the pile 43 is flattened or passed by a steel plate (not shown), so that it grips the tear open 4 as well as the edge 36 of the recess 40 and thus adheres to it. For better Auok sen a tab 44 can also be attached or formed on the outer wall of the protective layer 20.
  • the assumption 40 according to the exemplary embodiment according to FIG. 11 is relatively large in diameter, while a recess 40a corresponding to the exemplary embodiment according to FIG. 12 has a substantially smaller diameter.
  • This recess 40a bottom of the cup-shaped protective layer 20 serves to receive a filler tube 45 through which liquid hot-melt adhesive fills the space between the top wall 2 and the bottom of the protective layer 20.
  • an only tear-open handle 4a is provided, which is much cheaper to manufacture.
  • the tear-open handle 4a like the protective layer 20, combines with the filled hot-melt adhesive to form a compact unit, as can be seen on the right.
  • the container 1 is provided with its protective layer 20 so as to adhere firmly in the sense of the invention. E Scribing on the protective layer also tears open the tear handle 4a, thereby exposing the drinking opening. At most, an injection mark 46 remains on the bottom of the protective layer 2. However, this can be prevented or removed by known injection molding measures.
  • a flexible cup 39 is fastened in the region 10, but protruding from the upper part 1a, in the production of the upper part 1a of the container by means of a rivet 13.
  • the cup 39 na is placed over the container 1 at the bottom by the inner wall being curved outwards.
  • the protective layer 20 can be solidified by shrinking the. The force transmission for tearing open the zip fastener takes place from the protective layer 20 onto the rivet 13, without the need for a specially shaped pull handle.
  • a washer similar to a washer can be provided to improve adhesion, as can also be seen, for example, from FIGS. 16 to 18.
  • Such a washer 47 can also be held by a rivet projection 13a instead of a rivet 13, as is clear from FIG. 17 and the right-hand image of FIG. 18.
  • the production of such a never protrusion 13a is symbolized in FIG. 18, in which an upper part blank 1a is shown starting from the left, which is bulged upwards in the second image by means of a stamp 48, so that, as can be seen in the third image, a disk 47 is also shown can be taken.
  • a rivet punch 49 eg wobble punch
  • the disk 47a can also be toothed.
  • the different drinking openings 7a, b, c shown in FIG. 16, which are given by way of example, help to form a drinking opening 7 when the protective layer is torn open, regardless of which direction the tearing movement is carried out.
  • a number of methods are possible for producing protective layers of this type, in particular in the sense of applying E chains.
  • the surface area to be covered is chosen to be larger or at least half of the deckwa 2 is to be covered, this will be more difficult due to the tear-open handle 4 emerging there.
  • a conceivable solution would be to use a stamp that is provided in the course of a production line immediately after the filling process. It may be advantageous if a respective treatment station for the protective layer 20 is preceded by a treatment station in which the area to be covered with the protective layer 20 is first treated with an anti-septic agent.
  • the use of a stamp does not appear to be the optimum because two walls 2 and 8 enclosing an angle are to be provided with the protective layer, which is a flat stamp for the cover wall 2 and a further stamp, e.g. a roll stamp, for the jacket wall 8 required. It is therefore necessary to ensure that the two partial layers applied in this way in the edge area 9, where the drinking area 11 and the mouth attachment area 12 come together, bond with one another because otherwise the hygiene is endangered.
  • a hot melt adhesive in the broadest sense of this term, ie a mass which both has adhesive properties and also liquefies due to heating
  • it can be converted into an axometric representation using FIGS. 8 and 9 and shown in side view slot-like nozzle 15 which can be heated during operation are filled in the direction of arrow 16 into a slot 19 placed between two blocks 17, 18 g.
  • This slot 1 is delimited on the side by an end plate 21, of which only one (the rear one) is shown, whereas the front one has been removed.
  • the plates 21 can be extended upwards and form the holder for the nozzle 15.
  • a heating device which can be designed in any known manner per se, but is indicated by resistance wires 26.
  • the blocks 17, 18 are heated in such a way that the melt adhesive supplied liquefies. It depends on the respective circumstances, how the hot melt adhesive is fed.
  • a simple possibility is to connect the nozzle 15 directly upstream of a filling funnel, from where adhesive granulate either in free fall, preferably also by forced conveyance with the aid of a metering device (which simultaneously forms a shut-off when not in use), e.g. a dosing screw or a rotary lock, is introduced into the slot 19, where the liquefaction takes place.
  • the hot melt adhesive is already heated by the nozzle 15 and then fed to it in the liquid state, where it then only needs to be kept at its temperature. If necessary, the nozzle 15 can form the mouthpiece of an extruder which extracts the hot-melt adhesive and ensures a delivery under pressure.
  • Block 17 is designed like a squeegee and determines the final layer height of the protective layer when leaving. While a translational movement between nozzle 15 and container 1 was shown with reference to FIG. 9, a rotary movement is to be described with reference to FIG.
  • a nozzle body 115 is provided, which could be designed in accordance with FIGS. 8 and 9, but here has a plurality of distribution openings 30.
  • the nozzle body 115 be seated on the contour of the mutually angled walls 2 and 8 conforming shape, so that each of the distribution openings 30 from the layer to be provided with the protective layer 20 has a small, preferably equally large, distance.
  • the nozzle body 115 may be provided with a heater; however, it may also be sufficient to supply the hot-melt adhesive at a temperature such that the cooling inside the nozzle body 115 cannot be very great, especially since the latter itself retains part of the heat. Insulation of the nozzle can in any case be expedient in order to ensure even heat distribution and to keep heat losses low.
  • the hot melt adhesive flows in through a pipe 32 or in another way. If the relative movement between the nozzle and the container 1 is to be caused by a rotation of the nozzle 115, the tube 32 can be designed as a hollow shaft. However, this means that a corresponding device must be provided at the upper end of the tube 32 in order to supply the feed to secure a stationary feed line, for example a rotary guide, which is to be sealed accordingly in a manner known per se.
  • the container 1 e.g. with the help of a turntable, rotated under the nozzle.
  • This also simplifies a possible centering device, which ensures that the B container 1 and the tube 32 both lie on a common axis A;
  • corresponding connection surfaces can be sufficient to stop the movement of a container from the side on the turntable in precise positioning.
  • a of the nozzle 15 can be provided with sensors 33 which interrupt the downward movement of the tube 32 as soon as the nozzle 1 has reached the correct position.
  • sensors 33 can simply consist of two electrical contacts, the circuit of which is bridged or closed by the metal of the container.
  • this sensor 33 is not absolutely necessary, since generally only containers of the same size will run on a production line, so that once the desired height of the nozzle 15 is set. If sensors are nevertheless required, a touch to prefer a free sensor, such as a reflex light barrier, which the nozzle body 115 dips with its lower edge 34 when lowering.
  • the protective layer 20 In order to give the protective layer 20 a smooth surface, it is advantageous to spread the applied layer after the hot melt adhesive has been applied to the container 1. In principle, this may be done in a separate processing station, but it must be taken into account that the surface of the adhesive will first solidify and then be difficult to spread. Therefore, it is preferable to combine the spreading with the application process, for example by also connecting a spreading device 35 to the pipe 32.
  • the spreading device 35 shown is only an example, which can optionally be replaced by other designs, such as blowing nozzles (which at the same time may also ensure rapid setting of the adhesive).
  • the nozzle 15 can also take any desired shape in order to adapt to different containers 1 and / or different shapes of the protective layer.
  • the containers are made of various materials, e.g. can also consist of elastic material and may have different cross-sections instead of cylindrical prismatic or cuboid.
  • the closures which were each shown here as tear-open closures 3, for which the invention is preferably used, can be of different types.
  • the protective layer 20 is connected via a tear-resistant line 60, which is made of textile, plastic, wire or the like.
  • a tear-resistant line 60 which is made of textile, plastic, wire or the like.
  • the line is provided at its container-side end with an anchor-shaped hook 50, the two brackets 51 when the hook is inserted into the recess of the tear-open handle Can be compressed elastically in the direction of the line 60 and widen again after penetration of the tear-open handle, as a result of which the hook is attached to the handle 4 practically captively.
  • the handle 4 is in turn by means of rivets 3 on the locking egg
  • the line 60 is connected to an opening handle 52, which is also permanently connected to the protective layer. Pulling the opening handle 52 first slightly raises the cup-shaped protective layer 20, then the line 60 tightens, and with further pulling, the zipper 3 of the container 1 is opened until the fastener 5 reaches the end of the weakening line 6 . At this stage, the protective layer 20 is already completely lifted off the container and is now captively attached to the line 6 on the side of the container.
  • the protective layer 20 shown in FIG. 24 consists in its upper, in the assembled state of the top wall 2 lying opposite the wall of several sections which overlap one another.
  • This protective layer 20 could, for example, be constructed from paper or a similar material.
  • a relatively large section 64 projects beyond all other sections and covers their edges or parting lines.
  • a tear handle 4 is immediately connected by means of a rivet 13, the rivet 13 being simultaneously fastened to the closure part 5 on the top wall 2.
  • the closure part 5 can be pulled along the lines of weakness by pulling on the tear-open handle 4 are torn out, at the same time the protective layer 20 is removed.
  • the closure part 5 itself is captive, so that the tear-open handle 4 with the rivet 13 remains attached to it.
  • the remaining parts of the protective layer 20 can either get caught on it or, in the event of the section 64 tearing, can be brushed down on the container wall in the region of the rivet 13.
  • the remaining sections of the upper part stand up and slide over the edge 9 rich down.
  • FIG. 25 Another variant with a two-part protective layer 2 results from FIG. 25, in which the top wall 2 is covered by a disk, e.g. made of paper 53, is covered.
  • the disc 53 is held against the cover wall 2 by a sleeve-like part 54 of the protective layer 20 such that the sleeve 54 extends with its upper end over the edge 9 of the container.
  • a tongue 55 is provided, which is connected to the disk 53 - preferably in one piece - and projects beyond the sleeve 54 with an opening handle 52b.
  • Destruction lines 29 in the cuff 54 facilitate the tearing open by means of the tongue 55.
  • adhesive drops 57a or 57b are provided at points distant from the tongue 55, which drops 5 and the cuff 57 captively on Hold container.
  • the sheave 53 is designed as a disposable article and only the cuff remains on the container due to its shape or internal tension. Another alternative to this is that after removal of the disk 53, the sleeve is pushed down along the container and thus remains on the container.
  • the protective layer 20 shown in FIGS. 26 to 28 has star-shaped embossing lines 62 which can be partially or completely penetrated.
  • the sections 56 formed by the embossing lines 62 allow a crown-shaped erection of the upper part of the protective layer, so that it can either be pulled off or pushed down along the container wall.
  • the sections 56 are provided with internal bending forces, so that the crown position adjusts itself automatically after opening.
  • the protective layer 20 is opened by pulling an opening handle 52c which is attached to one of the sections 56.
  • the opening handle 52c is connected, for example, to the cut 56 via a line (60), a fixing element 65 being provided at the foot of the line, which holds all the sections 56 closed in the closed part.
  • the protective layer 20 In the open state, the protective layer 20 can be pushed down slightly. It can also remain in the state shown in FIG. 28, whereby one of the surfaces 56 can serve, for example, as a pouring aid.
  • the cup-shaped protective layer 20 shown in FIG. 29 has horizontal embossing lines 29, along which it can be torn open by means of the opening handle 52b. It is divided into a cuff-shaped and a cover-shaped part. The lid-shaped part can be folded down, which releases the zipper of the container. Folding back the upper part causes the container opening to be covered.
  • the predetermined crack line 29 is only a part, preferably up to max. 350 ° of the circumference of the container, extends, as a result of which the Te, free of predetermined tear lines, assumes a hinge function. If the jacket part 38 de protective layer 20 adheres to the container wall - for example by shrinking or by gluing - the captivity is ensured. But it could also be ensured a protective layer 20, which no longer adheres firmly in the torn state, but can be moved along the container wall, since it can then be pushed downwards.
  • FIG. 30 shows a protective layer 20 which covers only part of the container surface. It is captively attached to the container wall by means of adhesive dot 57.
  • Fig. 31 shows on the upper Ka 9 of the container 1 threaded parts 58, which allow a protective layer to move downward, as long as it is rotated against the threaded parts.
  • a protective layer 20 downwards it must first be opened in its upper part. This is done, for example, by a tearing device according to FIG. 31A by means of a cutting thread 31, which can be tightened by means of opening handle 52.
  • a friction increase of the covering 63 is provided, which facilitates the turning.
  • the protective layer 20 shown in FIG. 32 has a bead-shaped latching lug 59 along its inner circumference, which permits latching on the top of the container as well as on the underside of the container.
  • Many containers ver add along their upper edge 9 via a bead, which arises in the course of manufacture.
  • the detent 59 can snap in along this bead.
  • the container shown in Fig.33 has a becherför-shaped protective layer 20 which has a Schli 28 in its upper part through which a tear-open handle 4 protrudes into the open. This is attached to a closure part 5.
  • the slot 28 is at least somewhat narrower than the tear-open handle 4. Because the protective layer 20 cannot easily be removed from the open handle 4. Since the tear-open handle 4 adheres to the closure part 5 and this is possibly captively connected to the top wall 2, it remains with this Variant ⁇ hang the protective layer on the container after tearing it open.
  • the captivity of the Ve closing part 5 is ensured, for example, by a double bead embossing 61 at the end of the closing part 5 in the deck wall 2.
  • Container Top wall; Zipper; Pull handle; Closure part; a (plug) line of weakness; Drinking opening container wall; Edge area; Fastening area; Drinking area; Mouth attachment area; Rivet; Beads; Nozzle (slit-shaped); Arrow; Block; Block; Slot; Protective layer; End plate; Labeling field; Section; Detention center; Detention center; Resistance wires; Arrow; Slot; Breaking line; Distribution openings; Cutting threads; Pipe; Sensor; Bottom edge; Spreading device; Ran; Bottom wall; Jacket wall; 9 cups; 0 recess; 1 connecting bars; 2 a, b cuts; 3 piles of hot melt adhesive; 4 handle bottle; 5 filler pipe; 6 spray mark; 7 disc; 8 stamps; 9 rivet rod; 0 anchor-shaped hook; 1 bracket of the hook; 52 opening handle a, b, c; 3 disc; 4 cuffs; 5 tongue; 6 sections; 7 gluing points a, b; 8 thread sections; 9 latch; 0 double bead; 2 embos

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

Un récipient fermé pour liquide comporte un élément de fermeture (5) ménagé dans une paroi supérieure (2), lequel recouvre une ouverture permettant de boire. Un film protecteur (20) couvre l'élément de fermeture (5) ainsi qu'une région (12) destinée à l'application de la bouche, sur une paroi (8) adjacente à et faisant angle avec la paroi supérieure (2). Le film protecteur (20) est étendu de manière à recouvrir la région immédiatement circonvoisine de la région permettant de boire (11), à savoir soit au moins la moitié de la paroi supérieure (2) et/ou soit au moins la région de fixation (10) de l'anneau de préhension (4) sur l'élément de fermeture (5) de la paroi supérieure (2). En outre, pour des raisons écologiques, le film protecteur demeure fixé sur le récipient.
PCT/EP1988/001203 1988-05-27 1988-12-26 Recipient ferme WO1989011421A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH201188 1988-05-27
CH2011/88-0 1988-05-27

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WO (1) WO1989011421A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007766A1 (fr) * 1990-10-31 1992-05-14 Luis Lopez Rayado Fermeture pour conteneur metallique de boisson
DE29517998U1 (de) * 1995-11-14 1996-07-04 Herling, Joachim, 22359 Hamburg Getränkedose
DE19704148A1 (de) * 1997-02-04 1998-08-13 Yoshikazu Takayama Dose mit Verschluß
DE19932016A1 (de) * 1999-07-02 2001-01-04 Adam Krecisz Dosenverschluß
WO2001068461A1 (fr) * 2000-03-16 2001-09-20 Massimo Brazzale Dispositif de protection de levre pour boite a boisson
US6338418B1 (en) 2000-06-08 2002-01-15 Mark V. Derose Protective seal for cans
WO2002057155A1 (fr) * 2001-01-18 2002-07-25 Yoshikazu Takayama Contenant a boissons
US6443323B1 (en) 2001-01-11 2002-09-03 Mark V. Derose Protective seal for cans
DE10159150A1 (de) * 2001-12-01 2003-06-18 Juergen Grotjahn Dose für Nahrungsmittel
WO2004060756A1 (fr) * 2003-05-08 2004-07-22 Nepoklonov Alexandr Anatolievi Boite pour boissons
EP1584571A1 (fr) * 2002-11-29 2005-10-12 Onoda, Shigeyoshi Couvercle pour boites-boisson
DE102015009702B3 (de) * 2015-07-30 2016-12-29 FOLID GmbH Getränkedose mit Schutzfolienlagerraum
DE102016011941B3 (de) * 2016-10-07 2017-10-19 Unipress Etiketten & Schilder e.K. Vorrichtung und Verfahren zum Zuschneiden einer Schutzfolie
DE102016010465A1 (de) 2016-08-31 2018-03-01 Unipress Etiketten & Schilder e.K. Schutzelement zum Abdecken des ausgießseitigen Endes eines Getränkebehälters
DE102016014511A1 (de) 2016-12-07 2018-06-07 Unipress Etiketten & Schilder e.K. Vorrichtung zum Erzeugen eines bahnförmigen Vorprodukts, aus dem Schutzkappen für Behälter herstellbar sind
CN108349185A (zh) * 2015-11-23 2018-07-31 崔庆福 饮料罐的卫生盖的制造方法
NL2032302B1 (en) * 2022-06-28 2024-01-12 Mimain Ouled Radi Food or beverage can

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690509A (en) * 1969-07-07 1972-09-12 George H Kinoian Hygienic mouth protectors
GB2156772A (en) * 1984-04-04 1985-10-16 Jorge Monjo Burcet A beverage can
EP0268690A1 (fr) * 1986-06-13 1988-06-01 Toyo Seikan Kaisha Limited Couvercle de boite facile a ouvrir et permettant une protection du bord de coupe de l'entaille, et procede de production
WO1988010215A1 (fr) * 1987-06-17 1988-12-29 Mueller Paul A Recipient scelle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690509A (en) * 1969-07-07 1972-09-12 George H Kinoian Hygienic mouth protectors
GB2156772A (en) * 1984-04-04 1985-10-16 Jorge Monjo Burcet A beverage can
EP0268690A1 (fr) * 1986-06-13 1988-06-01 Toyo Seikan Kaisha Limited Couvercle de boite facile a ouvrir et permettant une protection du bord de coupe de l'entaille, et procede de production
WO1988010215A1 (fr) * 1987-06-17 1988-12-29 Mueller Paul A Recipient scelle

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU643342B2 (en) * 1990-10-31 1993-11-11 Arsenio Gutierrez Blanco Closure for beverage metal containers
US5292022A (en) * 1990-10-31 1994-03-08 Blanco Arsenio G Closure for beverages metal containers
WO1992007766A1 (fr) * 1990-10-31 1992-05-14 Luis Lopez Rayado Fermeture pour conteneur metallique de boisson
DE29517998U1 (de) * 1995-11-14 1996-07-04 Herling, Joachim, 22359 Hamburg Getränkedose
DE19704148A1 (de) * 1997-02-04 1998-08-13 Yoshikazu Takayama Dose mit Verschluß
DE19932016A1 (de) * 1999-07-02 2001-01-04 Adam Krecisz Dosenverschluß
WO2001068461A1 (fr) * 2000-03-16 2001-09-20 Massimo Brazzale Dispositif de protection de levre pour boite a boisson
US6338418B1 (en) 2000-06-08 2002-01-15 Mark V. Derose Protective seal for cans
US6443323B1 (en) 2001-01-11 2002-09-03 Mark V. Derose Protective seal for cans
US6899244B2 (en) 2001-01-18 2005-05-31 Yoshikazu Takayama Beverage container
WO2002057155A1 (fr) * 2001-01-18 2002-07-25 Yoshikazu Takayama Contenant a boissons
DE10159150A1 (de) * 2001-12-01 2003-06-18 Juergen Grotjahn Dose für Nahrungsmittel
EP1584571A1 (fr) * 2002-11-29 2005-10-12 Onoda, Shigeyoshi Couvercle pour boites-boisson
EP1584571A4 (fr) * 2002-11-29 2007-03-21 Onoda Shigeyoshi Couvercle pour boites-boisson
WO2004060756A1 (fr) * 2003-05-08 2004-07-22 Nepoklonov Alexandr Anatolievi Boite pour boissons
DE102015009702B3 (de) * 2015-07-30 2016-12-29 FOLID GmbH Getränkedose mit Schutzfolienlagerraum
CN108349185A (zh) * 2015-11-23 2018-07-31 崔庆福 饮料罐的卫生盖的制造方法
EP3381670A4 (fr) * 2015-11-23 2019-06-26 Choi, Gyeong-Bok Procédé de fabrication de couvercle hygiénique pour boîte de boisson
CN108349185B (zh) * 2015-11-23 2020-09-29 崔庆福 饮料罐的卫生盖的制造方法
DE102016010465A1 (de) 2016-08-31 2018-03-01 Unipress Etiketten & Schilder e.K. Schutzelement zum Abdecken des ausgießseitigen Endes eines Getränkebehälters
DE102016011941B3 (de) * 2016-10-07 2017-10-19 Unipress Etiketten & Schilder e.K. Vorrichtung und Verfahren zum Zuschneiden einer Schutzfolie
DE102016014511A1 (de) 2016-12-07 2018-06-07 Unipress Etiketten & Schilder e.K. Vorrichtung zum Erzeugen eines bahnförmigen Vorprodukts, aus dem Schutzkappen für Behälter herstellbar sind
NL2032302B1 (en) * 2022-06-28 2024-01-12 Mimain Ouled Radi Food or beverage can

Also Published As

Publication number Publication date
AU2910789A (en) 1989-12-12

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