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
• • 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
  • B65D51/00—Closures not otherwise provided for
  • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
  • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
• • 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
  • B65D2251/00—Details relating to container closures
  • B65D2251/0003—Two or more closures
  • B65D2251/0006—Upper closure
  • B65D2251/0015—Upper closure of the 41-type
• • 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
  • B65D2251/00—Details relating to container closures
  • B65D2251/0003—Two or more closures
  • B65D2251/0068—Lower closure
  • B65D2251/0093—Membrane

Definitions

• the invention relates to a sealing disc for the closure of mouths of containers, with a film for the inductive coupling of heat into the sealing disc, with an edge region of the sealing disc, with a sealing layer on the inside of the container facing the side of the film for sealing sealing the edge region the sealing disc on the mouth of the container, with one or more layers on the side facing away from the sealing layer side of the film, with a handle formed as part of the sealing disc for opening the mouth of the closed with the sealing disc container.
• the invention relates to a container with such a sealing washer.
• Containers are used to hold content, for example, to receive drinks or powdered foods or other substances.
• the containers have on their top an opening or mouth. Often it is desired or even necessary to close this container mouth with a disk-shaped seal that closes the contents tightly against external influences, ie with a sealing washer.
• a sealing disc for closing a container which can be fixed by induction sealing on the opening edge of the container.
• the sealing disc has for this purpose a metal foil.
• This concept which has also been widely used, has the disadvantage that the uppermost layer either does not stick completely to the underlying layer or may be attached to it, so that in fact a loose, upwardly projecting and palpable fold is formed, or that the top layer from the outset by additional material so that they with this additional material an upwardly projecting and again on the foot of the Forming fold back layer.
• the object of the invention is therefore to propose such a sealing disc.
• At least one of the layers on the side facing away from the sealing layer has a perforation with a line-like arrangement of individual perforation holes, which has the shape of an opening aid.
• the user has in practice a container in front of him, in which the mouth of the container is closed by a sealing disc according to the invention.
• the user now unscrews the screw cap provided in the majority of the embodiments and thereby looks directly at the upper side of the sealing disc.
• he now looks at the perforation which certainly also in addition can be highlighted in color.
• the function is thus recognizable to him, since he knows perforations or other weakening lines in other applications.
• the user now pierces the sealing washer in the region of the handle, which is easily possible due to the weakening line or the perforation.
• the user can now take the pressed by him in the direction of the container interior handle and either bring them back upwards and pull them off or pull them on the handle and, with a different design pattern, remove the entire sealing disc from the opening edge around the mouth of the container.
• the user either uncovers the entire mouth or uncovers an opening in the sealing disc which is predetermined by the perforation.
• the size of this reduced opening can be exactly predetermined by the shape of the pattern. For example, for conventional containers, for example, for foodstuffs, one will choose a size which corresponds to an extraction process which is appropriate for the product. For example, in the case of powdered contents of a food, it is appropriate to provide an opening which allows insertion and removal of a teaspoon.
• the sealing disk is provided on the side of the induction layer facing away from the interior of the container, ie the side of the film facing away from the opening edge, for the inductive coupling of heat into the sealing disk with one or more layers which provides a reinforcement.
• This layer receives through the weakening line or the perforation a predetermined breaking point, which in turn forms the customer-friendly opening aid.
• this reinforcing layer is built up by the layers on the side of the film facing away from the sealing layer being a film of polyethylene terephthalate (PET film) and / or a film of monoaxially oriented polypropylene (MOPP film) and / or or a film of biaxially oriented polypropylene (BOPP film) and / or a film of oriented polyamide (OPA film).
• PET film polyethylene terephthalate
• MOPP film monoaxially oriented polypropylene
• BOPP film biaxially oriented polypropylene
• OPA film oriented polyamide
• the layer thickness of this PET film is preferably between 5 ⁇ and 50 ⁇ .
• As the amount of the primer or the laminating adhesive 0.5 to 5 g / m 2 of dry is preferable.
• a BOPP film or MOPP film may also be provided, likewise preferably by means of extrusion lamination or another form of lamination. Again, a primer or Kaschierklebstoff be placed between the induction layer and this reinforcing layer, with an amount of 0.5 to 5 g / m 2 dry is also preferred here.
• the thickness of this BOPP film or MOPP film is preferably between 5 ⁇ and 50 ⁇ .
• an OPA film as reinforcing layer on the side of the induction layer opposite the opening edge of the container mouth, ie preferably with a metal foil, in particular an aluminum foil, again by extrusion lamination or another form of lamination.
• a primer or a laminating adhesive can be placed between the induction layer and the OPA film.
• the amount is also preferably between 0.5 and 5 g / m 2 dry.
• the thickness of the OPA film is preferably between 8 ⁇ and 50 ⁇ .
• This release varnish or even the film itself can be provided with additional customer-friendly imprints, such as "puncture and peel” pictograms or a corresponding inscription or also other indications, for example, along the perforation, which can help the customer understand the procedure.
• additional customer-friendly imprints such as "puncture and peel” pictograms or a corresponding inscription or also other indications, for example, along the perforation, which can help the customer understand the procedure.
• the sealing disks receive a shape corresponding to the size of the mouth of the container and are thus generally preferably round, in particular circular. They can be used by the manufacturer of the closures and the container without additional effort, since the actual positioning of the perforation relative to the container edge is irrelevant. So it does not matter where, for example, attaches a special turn of the thread and it must not be taken into account for a special recess such as tabs or folds in the container lid.
• the side of the sealing disc opposite the container mouth is provided with sealing layers which can be adapted to the corresponding choice of material of the container. So a seal against containers made of glass as well as of different plastics (HDPE, LDPE, PP, PET or PVC) is possible.
• the sealing layers can be set firmly sealing or peelable and have a thickness of preferably between 3 ⁇ and 100 ⁇ .
• the induction layer or induction foil itself which carries on one side this sealing layer and on the other side the reinforcing layer, is preferably a metal foil, in particular an aluminum foil and has a thickness of preferably between 6 ⁇ m and 50 ⁇ m.
• the sealing layer can be applied to this film, for example by means of extrusion coating or lamination or painting. It is also possible to place a primer or a laminating adhesive between the layers, amounts of from 0.5 to 5 g / m 2 dry being preferred.
• the weakening lines or perforation lines can be introduced at different times or in different method steps; This is preferably done in the film that forms the reinforcing layer before merging with the induction layer and the other layers.
• sealing disc can therefore be used in virtually every closure. It is not necessary, the screw on certain projections or other properties of the gasket out adapt. Thus, there are no problems in inserting the sealing washer into the container lid for the container contents filler and also no problems for the user opening the containers.
• the entire behavior of the sealing disc is simple and self-explanatory for the end user.
• the proposed opening aid is thus within the sealing disc level and also within the sealing disc rim without projecting it in any form to the outside.
• the lines of weakness or perforation already allow the formation of the desired opening aid or handle. Due to the weakening line, the end user can pierce or put on the film, in a sense piercing.
• the weakening line can be introduced in very different forms.
• a continuous line may be provided which does not completely sever the layer in question. It is also possible to provide this continuous line with appropriate interruptions, but which are so short that even a total separation can take place.
• the interruptions, ie the distances between the sections of the weakening line can have a very different length and be between about 0.05 and 5 mm long.
• the weakening line as a perforation line, that is to say from a multiplicity of aligned points, which together form a weakening line, the individual points each having small distances from one another.
• the distances can be between 0.05 and 5 mm. Distances of less than 0.05 mm are already in the order of the layer thickness and are technically difficult to provide and not required. Distances of more than 5 mm lead to an unclean separation of the different sections on the weakening line. Any existing perforation holes are thus arranged in a predetermined, relatively closely spaced distance from each other.
• This weakening line or perforation line runs in all embodiments of the invention to the mouth edge of the container. If the user has formed the handle for himself, the corresponding layer or foil of the sealing disc can be pulled off the container mouth with a pull, if appropriate, therefore, the entire sealing disc, and without residues remaining on the container mouth.
• the line of weakness is introduced only in this layer of the sealing disc and the further layers located below this layer with the lines of weakness are without damage, both without damage by the weakening line and without damage by the opening process. Between the individual layers can be located in a variety of embodiments, a bonding agent.
• the opening is formed by the sealing disk itself.
• Another advantage is that the sealing disc is the same thickness over the entire surface area, unlike conventional tab designs that work with upwardly projecting or deployable folds. The handle for removing the sealing disc or the sealing disc parts actually only arises through the intervention of the end user at the moment when the end user wants to open the container and get to the container contents.
• a further layer can be provided, in particular a foam film.
• a foam film preferably has a foam sheet based on polyethylene or polypropylene with a thickness of preferably 15 ⁇ to 250 ⁇ proved to be particularly practical.
• further layers are provided and designed such that they seal the mouth of the container after removing the film and re-laying the layers.
• This additional element forms a so-called reseal part. It may in particular have a cardboard or a foam sheet.
• the carton or foam sheet may be coated or laminated on one or both sides with a plastic film, for example plastic films of polyethylene terephthalate (PET) oriented polypropylene film (OPP), high density polyethylene (HDPE), low density polyethylene (LDPE). Also possible is a coating with paper or cardboard.
• PET polyethylene terephthalate
• OPP polypropylene film
• HDPE high density polyethylene
• LDPE low density polyethylene
• This so-called reseal part can be connected by means of a wax lamination or an extrusion lamination with the reinforcing layers or the release lacquer thereon and then dissolves only when first screwing the screw cap.
• no connection of this Reseal part is provided with the underlying layers from the outset, so that it is then a two-piece sealing disc.
• FIG. 1 shows a section through a container with a sealing washer according to the invention
• Figure 2 is a perspective view of a container of the
• Figure 3 is a view similar to Figure 2 at more advanced opening process
• Figure 4 is a plan view of an embodiment of a
• Figure 5 is a plan view of another embodiment of a
• sealing disc 10 In the arrangement shown in Figure 1 from a container 5 with a screw cap 6 and a placed between the mouth of the container 5 and the screw cap 6 sealing disc 10 can be seen that for this sealing disc 10 more layers or films are arranged one above the other.
• the complete sealing disc 10 is applied to the opening edge of a container 5, of which in particular the mouth is arranged schematically in section.
• the container 5 can have very different shapes. It may be made of glass or plastic or other material and is filled (not shown), for example with a drink or with a powdered food or similar materials.
• the mouth of the container 5 is usually circular and in the majority of embodiments. Accordingly, the opening edge of the container 5 is circular and the sealing disc 10 which is placed on the opening edge, is a total of circular and has an edge region 1 1, which forms a circular ring and approximately corresponds to the opening edge of the container 5.
• the container 5 is closed with a screw cap 6, which is also indicated schematically. Before the first opening the screw cap 6 is continuously screwed tight. When first opening the screw cap 6 is removed by the end user in the illustrated embodiment, for the first time. For this purpose, it rotates the screw cap and removes it from the container 5.
• the sealing disc 10 has as a central element in the illustrated embodiment of the sealing disc a foil 20 for the inductive coupling of heat into the sealing disc 10.
• This foil 20 consists of an electrically conductive Material, in particular a metal, usually aluminum.
• This film 20 is provided on the mouth of the container 5 facing side with a sealing layer 25. The sealing layer 25 thus rests on the opening edge around the mouth of the container 5.
• the entire sealing disc 10 After filling the container 5 with filling material, the entire sealing disc 10 has been placed on the container mouth or placed there. Then inductively into the sealing disk 10 and thus in particular in the film 20 heat was coupled. This heat causes the entire sealing layer 25 to melt, in particular also in the edge region 11 of the sealing disk 10, that is, where the sealing layer 25 rests directly on the edge of the mouth of the container 5. This mouth of the container 5 is heated.
• the sealing layer 25 thus connects firmly in this area with the upper edge of the container 5. It is sealed as it were.
• another layer 30 which serves as a reinforcing layer here.
• This layer 30 consists for example of PET, BOPP, MOPP or OPA. It is firmly applied to the induction foil, in particular by means of extrusion lamination or lamination. It has an indicated in the figure 1 and explained in more detail later weakening line 36 for forming a handle 35.
• a further layer 40 This layer 40 is fixed to the underside of the screw, for example, sealed, glued or mechanically clamped.
• the screw cap 6 holds after closing the container at the bottler of the content, the entire sealing disc of sealing layer 25, film 20 for coupling heat, reinforcing layer 30 and additional layer 40 additionally firmly on the container.
• the layer 40 dissolves together with the screw cap 6 of the cup or container 5 with the remaining thereon sealing layer 25, film 20 and reinforcing layer 30, since an existing adhesive layer between the layer 30 and the layer 40, the weakest connection in the resulting composite the sealing disc is.
• the user who is now separated only by the sealing disc 10 of the substance actually interest him inside the container 5, detects the lines of weakness 36, possibly supported by pictograms or imprints, and pierces these lines of weakness 36 in a range as far away from Edge region 1 1 and the mouth edge of the container 5 easily with his finger, the sealing disc 10 with the intentionally weakened in this area reinforcing layer 30, the underlying induction film 20 and the already very thin and non-solid sealing layer 25th
• this is not an additional surface component or an additional attached element of the sealing disk 10, but an integrated surface component of one of the layers that protrudes in any direction upwards or outwards, protruding or otherwise conspicuous At this moment, this surface component now still hangs on the mouth edge of the container 5.
• the user now grasps this handle 35, which is produced by the puncture at the lines of weakness 36, and pulls on it. Depending on the specific training and sectional shape, he simply pulls this handle 35 up to the edge region 1 1 of the sealing washer 10 and thereby at the same time reaches the opening edge of the container 5. Then tears this handle 35 by continued pulling from the opening edge of the container 5 completely off, He has automatically created an opening in the sealing disc 10, in which he can now introduce a teaspoon or from which he can pour out about a liquid by tilting the container 5.
• the shape of the opening created is predetermined by the perforation and exactly defined and predictable for the user, so that it can not come to surprising and unpredictable reactions of the contents by spilling or the like.
• the opening also adjoins the mouth edge of the container 5.
• FIG. 4 A first embodiment of the sealing disk 10 can be seen in FIG. 4, which is shown here as a plan view. This view is given to the user after he has unscrewed the screw cap 6 from the container 5 and looks directly from above on the sealing washer 10. He sees the top layer, this is the reinforcing layer 30. On this reinforcing layer 30, the line of weakness 36 is distinguished, which outlines the handle 35 here.
• the user would press on the lower horizontal line in the illustration, causing it to tear at the weakened line 36 and move inwardly towards the interior of the container. The user then grasps the free end of this nascent handle 35 and then pulls it, thus pulling this handle Now again out of the container inside and out and then pulls them off completely.
• this handle 35 tears completely out of the remaining surface of the sealing disc 10.
• the perforation or weakening line 36 is only in the reinforcing layer 30, the significantly weaker induction layer 20 and even more the other existing layers such as the sealing layer 25 tear off automatically, since they are connected to the reinforcing layer 30 and in itself have significantly less material strength.
• FIG. 5 shows a further embodiment.
• a line of weakness 36 is apparent, which forms a kind of incomplete circle here.
• This incomplete circle is then connected via the weakening line 36 to the edge region 11 of the sealing disk 10 on the mouth of the container 5.
• This incomplete circle can in turn be pressed by a finger pressure of the user in the direction of the interior of the container 5.
• This in turn creates a handle 35 on which the user can pull.
• the user can solve the complete sealing disc 10 from the mouth of the container 5.
• the force exerted by the end user takes place so that successively the still each sealed portion of the edge portion 1 1 of the sealing disc 10 is released, thereby allowing the detachment of the next section.
• a foamed foil 32 in particular a foamed foil 32 made of polyethylene or polypropylene.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)
• Packages (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

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Family Applications (1)

Country Status (8)

Families Citing this family (6)

Citations (10)

Family Cites Families (11)

• 2012
  • 2012-04-05 DE DE102012006934A patent/DE102012006934B3/de not_active Expired - Fee Related
• 2013
  • 2013-04-05 US US14/379,815 patent/US9156584B2/en active Active
  • 2013-04-05 PL PL13714304.6T patent/PL2834162T3/pl unknown
  • 2013-04-05 JP JP2015503892A patent/JP6261561B2/ja active Active
  • 2013-04-05 DK DK13714304.6T patent/DK2834162T3/en active
  • 2013-04-05 MX MX2014011852A patent/MX346598B/es active IP Right Grant
  • 2013-04-05 WO PCT/EP2013/057199 patent/WO2013150137A1/de not_active Ceased
  • 2013-04-05 EP EP13714304.6A patent/EP2834162B1/de active Active

Patent Citations (11)

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