DE102009004235A1 - Cover for closing a container opening, packaging with a container and such a lid and method for sealing a container with such a lid - Google Patents

Abstract

A lid (16) for closing an opening (12) of a container (10) has a sealing film (26) which can be attached to an edge (14) of the container opening (12), wherein the sealing film (26) can be torn open and / or or tear-off on the edge (14) of the container opening (12) is attachable. In this case, the sealing film (26) is fixed directly on the cover (16), wherein the fixing compound (28) between the sealing film (26) and the lid (16) is formed weaker than the intended sealing compound (34) between the sealing film (26). and the rim (14) of the container opening (12).

Description

The The invention relates to a lid for closing an opening a container, a packaging with a container and such a lid and a method for sealing a Container with such a lid.

packagings of consumer goods, such as food, cosmetics, Medicines and the like, are often associated with a Provided sealing film. This sealing film serves as a tamper-evident closure, which opened only once or not indestructible can be opened, allowing an unnoticed closing not after a previous opening of this closure is possible. Depending on the design of the sealing film is used This also as a barrier layer, for example, the nature or the aroma of the respective consumer goods in the still sealed To preserve packaging.

The Sealing the packaging is usually done after one of two known methods. For example, the sealing film by applying pressure and heat directly to the edge of a Container opening glued or welded, before the lid is placed on the container opening becomes. In another method, the sealing film is first placed in the lid and then on the container opening attached lid against the edge of the container opening pressed before gluing or welding the sealing film with the edge of the container opening For example, inductively. The latter inductive sealing has the advantage of being in the production line can happen with very short sealing times.

Containers sealed with sealing films of this type are for example in the documents DE 39 20 324 A1 and DE 91 08 868 U1 described, which are specifically concerned with the problem of tearing open the sealing film to open the container.

In the arrangement of the sealing film in the lid and the subsequent placement of the lid on the container opening and sealing the sealing film on the edge of the container opening, it is currently common to first laminate the sealing film on a support plate, usually made of a foam or cardboard, and then this Insert composite material in the lid. This method is for example from the DE 40 20 371 C1 known. Upon first opening of the package by the consumer, this connection between the carrier plate and the sealing film dissolves, while the Sigelverbindung between the sealing film and the edge of the container opening is initially maintained. The consumer realizes this release process between the support plate and sealing film by an increased effort in the Erstöffnung and the associated noise.

The Support plate for the sealing film is in particular to facilitate the handling of the sealing film during the manufacturing process and the filling and sealing process used. The carrier plate causes a stiff composite, the risk of falling out of the lid (eg due to of air nozzles in the production lines) and damage reduced. However, a disadvantage of these carrier plates is in that they remain after the separation of the sealing film in the lid. This For example, when recycling the lid, it usually causes is made of a different material than the carrier plate, an extra effort, since the carrier plate in an additional elaborate step from the rest of the lid must be disconnected. In addition, the carrier plate forms an additional component, which accordingly additional Production and storage costs caused.

Of the The present invention is therefore based on the object, an improved To provide sealing technology for containers, which does not require a carrier plate for the sealing film.

According to one First aspect of the invention, this object is achieved by a lid for closing an opening of a container solved, which is provided with a sealing foil, the an edge of the container opening is attachable, wherein the sealing film formed tear-open and / or torn off is attachable to the edge of the container opening, characterized in that the sealing film directly on the Cover is fixed, with the fixation connection between the Sealing film and the lid is designed to be weaker than the intended sealing connection between the sealing foil and the edge of the container opening.

According to the invention, the sealing film is not arranged with the aid of a support plate in the lid, but fixed directly to the lid. By this measure, eliminates a support plate or the like for the sealing film as an additional component. This in turn reduces the cost and expense of manufacturing, warehousing and recycling of the lid. So that the consumer when first opening the container receives a similar impression as in the conventional system with the laminated on a support plate sealing film in the lid, the fixing connection between the sealing film and the lid is formed weaker than the intended sealing connection between the sealing film and the edge of the container opening , In this way, it is ensured that the first time the cover is removed from the container opening, the sealing film is separated from the lid, but the sealing connection between the sealing film and the edge of the container opening is maintained, and the user releases the solution operation of the sealing film from the lid by an increased effort and the associated noise realized.

The The present invention basically includes all types of containers of any shapes and sizes, made of any materials (glass, plastic, metal, etc.) and with any shapes, sizes and arrangements of container openings. The containers can for holding different objects or substances be used, such as foods, medicines, Cosmetics, etc. Also, the present invention basically includes all kinds of lids of any shapes and sizes, made of any materials (glass, plastic, metal, etc.) and with different locking mechanisms (screw cap, snap closure, Slide-over, etc.), the cover being natural to the respective opening to be closed Container must be adapted. Container and lid can be the same or different Be made of materials. In addition, the lid can optionally for several times or only for the one-time closure of the Be designed container.

Of the Term of "sealing film" includes both coated single-layer as well as multi-layer film structures and film structures from one or more materials. The texture of the Sealing film is according to their compatibility with the substances to be absorbed in the container and their desired Barrier layer effect (eg vapor barrier, oxygen barrier, fluid-tight, gas-tight, condensation-preventing, etc.) freely designable. Further Can the "sealing film" a sealing film with or without Pull tab for easier opening of the seal be the container.

Of the Term of "fixation compound" between the Sealing film and the lid comprises in the context of the present invention all kinds of detachable connections. The fixation compound is in particular by non-positive and / or cohesive Achieved connections, in particular materially bonded connections as welding or adhesive joints are preferred.

Of the Term of "sealing compound" between the sealing film and the edge of the container opening comprises in the frame the present invention basically all kinds of Soluble and permanent joints that have a Connection to the particular application of the packaging form adapted tightness properties. The sealed connection is preferred by cohesive connections such as welding or adhesive bonds achieved. The sealing compound can do this for example by heat and / or pressure as well as inductively or by heat radiation and / or conduction.

Prefers has the sealing film on a metal layer, the metal a Aluminum alloy is, or contains aluminum.

Especially Preferably, the sealing film is a metal foil, in particular Aluminum contains, on both sides with a plastic layer is provided for inductive fixation of the film.

According to the For example, the invention may provide the sealing film with its container opening remote side surface and / or with its radial peripheral surface be fixed to the lid.

there can the sealing film either substantially full surface be fixed to the lid or only in sections on the lid be fixed. In the latter case, the sealing film, for example, over one or more connection points, strips and / or surfaces be fixed to the lid.

In a preferred embodiment of the invention, the lid a Have web that presses the sealing film against the edge of the container opening, when the lid closes the container opening. By the contact pressure of the sealing foil against the edge of the container opening with the help of the web, the sealing compound between the sealing film and the edge of the container opening improved or be strengthened.

there can the bridge on the lid in terms of shape and size in the radial direction of the lid substantially the edge of the container opening match, so the contact pressure of the sealing film to the edge the container opening substantially evenly over the entire edge bonding surface can be applied.

In Another embodiment of the invention, the sealing film on this Be fixed bridge of the lid.

According to a second aspect of the invention, the above object is achieved by a package having a container with an opening; a lid for closing the container opening; and a sealing film which is sealed to an edge of the container opening, wherein the sealing film formed tear-open and / or tear-off attached to the edge of the container opening, characterized in that the sealing film is fixed directly to the lid, wherein the fixing connection between the sealing film and the lid is formed weaker than the sealing connection between the sealing film and the edge of the container opening, so that at least the first time the lid is removed from the container opening ge the sealing film from the lid is separated, but the seal connection between the sealing film and the edge of the container opening is maintained.

The Differences in the fixation compound can thereby causes a metal foil with plastic layers on provided on both sides, the plastic layers are different Have compositions and / or thickness.

The Advantages and definitions of this packaging of the invention correspond to those of the lid explained above according to the first aspect of the invention.

In advantageous embodiment, the lid and the sealing film formed for this packaging in the manner described above or arranged.

According to one Third aspect of the invention, the above object is achieved by a method for sealing a container with an opening, the can be closed by a lid, solved with the Steps: Providing a lid; Fix a sealing foil directly on the lid; Closing the container opening with the lid; and sealing the sealing film to an edge of the Container opening, wherein the fixing compound formed weaker between the sealing film and the lid is called the sealing connection between the sealing film and the edge the container opening.

The Advantages and definitions of this invention Methods correspond to those of the lid explained above according to the first aspect of the invention.

In An embodiment of the invention can when closing the container opening with the lid the sealing film pressed against the edge of the container opening become. In this way, the sealing compound between the sealing film and the edge of the container opening improved or be strengthened.

In Advantageous embodiment of the lid and the sealing film formed for this method in the manner described above or arranged.

Above as well as other features, advantages and applications The invention will become apparent from the following description with reference to FIG the accompanying drawings better understandable. In this demonstrate:

1A a schematic sectional view of a package according to a first embodiment of the invention, before closing the container opening with the lid;

1B a schematic sectional view of the packaging according to the first embodiment of the invention, after sealing the container;

2 a schematic sectional view of a lid with sealing film according to a second embodiment of the invention;

3A to C are schematic illustrations for explaining various sectional fixation connections between the sealing film and the lid of 2 ;

4 a schematic sectional view of a lid with sealing film according to a third embodiment of the invention;

5 a schematic sectional view of a lid with sealing film according to a fourth embodiment of the invention; and

6 a schematic sectional view of a lid with sealing film according to a fifth embodiment of the invention.

Referring to 1A and 1B First, a first embodiment of a package according to the present invention will be described in detail.

The packaging contains a container 10 , for example in the form of a glass, with an opening 12 passing through an edge 14 is limited. The container opening 12 on the one hand serves to fill the container 10 with for example a food and on the other hand for removing the food from the container 10 ,

The container opening 12 is through a lid 16 , for example made of plastic, lockable. The lid 16 is preferably formed in one piece and has a scheibenfömige closure plate 18 and one of the radial periphery of this shutter plate 18 towards the tank 10 protruding edge section 20 on. The inner diameter of this edge section 20 is larger than the outer diameter of the opening edge 14 forming container wall, so that the lid 16 on the container 10 can be placed while his edge section 20 the container wall of the opening 12 embraces.

As in 1A and 1B this is the opening edge 14 forming container wall with an external thread 22 formed and is the edge portion 20 of the lid 16 with a inner thread 24 formed, with the external thread 22 the container opening 12 can be engaged. In the present embodiment, the lid 16 thus on the container 10 screwed, However, the present invention is intended neither to the in 1A and 1B sketched thread still be limited to a screw cap itself.

Inside the lid 16 , more precisely at the container 10 facing side of its closure plate 18 , is a sealing foil 26 arranged. This sealing film 26 is via a welded or glued connection 28 directly on the lid 16 fixed. As in 1A and 1B to see is the lid 16 at the container 10 facing side of its closure plate 18 also with a substantially annular designed web, for example 30 provided and the sealing film 26 is with her the container 10 remote side surface at this bridge 30 fixed. This fixation compound 28 between the sealing film 26 and the jetty 30 of the lid 16 can optionally be carried out essentially over the entire web area or only in sections (eg adhesive dots).

As in particular in 1B to recognize, is the sealing film 26 through the footbridge 30 of the lid 16 against the edge 14 the container opening 12 pressed when the lid 16 all the way to the container 10 is screwed on. In this state then becomes a sealed connection 34 between the sealing film 26 and the edge 14 the container opening 12 produced. This seal compound 34 is performed, for example, as a welded or glued connection and is preferably carried out inductively. For the inductive sealing connection 34 has the preferably made of metal sealing film 26 a plastic layer 32 or the like, at least in the region of the edge 14 the container opening 12 but preferably on the entire surface. The heat required to make the sealed joint 34 but can also be supplied in other ways, for example via a direct contact with a heating element or by means of a hot air flow.

The sealing foil 26 For example, due to their low material thickness and / or a suitable material properties simple, ie preferably without tools, rupture. Additionally or alternatively, the sealing film 26 also from the edge 14 the container opening 12 can be torn off or removed. For this purpose, the sealing film 26 For example, have a pull tab or the like, even if this is not absolutely necessary and therefore in the embodiments shown here is not the case.

As in 1B indicated, correspond to shape and size of the bridge 30 of the lid 16 in the radial direction (right / left direction in 1A and 1B ) essentially those of the edge 14 the container opening 12 , In this way it is achieved that the sealing surface 26 with screwed lid 16 essentially evenly and completely against the edge 14 the container opening 12 is pressed, so a better or stronger seal compound 34 between the sealing film 26 and the edge 14 can be achieved.

In the preparation of fixation compound 28 between the sealing film 26 and the jetty 30 of the lid 16 on the one hand and the sealed connection 34 between the sealing film 26 and the edge 14 the container opening 12 on the other hand, make sure that the fixation compound 28 is significantly weaker than the sealed connection 34 , This can be achieved, for example, by different joining techniques, by connecting surfaces of different sizes and / or by differences in the materials to be joined. This ensures that at least the first time removing the lid 16 from the container 10 the sealing film 26 from the jetty 30 of the lid 16 is disconnected, the seal compound 34 between the sealing film 26 and the edge 14 the container opening 12 on the other hand is preserved. This in turn causes the consumer experiences similar impressions as when opening conventional packaging with sealing film on a support plate in the lid for the first time.

In contrast to conventional packaging systems, in which a sealing film is arranged in the lid with the aid of a carrier plate (for example made of cardboard), in the case of the packaging according to the invention such a carrier plate can be dispensed with, since the sealing film 26 directly on the lid 16 is fixed and is secured against falling out or blowing out during the manufacturing or filling process. By eliminating the carrier plate, the number of components for packaging is reduced. Furthermore, the lid can be recycled more easily because it consists of only one component and thus only one material.

As a precaution, it should be noted that the illustrations in 1A and 1B and are not to scale in the other figures. In particular, the sealing film 26 in relation to the other components such as lids 16 and containers 10 generally much thinner than shown.

A second embodiment of a package according to the invention will now be described with reference to 2 and 3 explained in more detail.

As in 2 shown, the lid points 16 in contrast to the above first embodiment no bridge 30 on. Instead, she stands gel sheet 26 full surface with the inside of the closure plate 18 of the lid 16 in contact. In this case, the fixation compound 28 between the sealing film 26 and the lid 16 for example, essentially over the entire area.

Alternatively, however, in this case only a partial fixation connection 28 between the sealing film 26 and the closure plate 18 be provided of the lid. As in 3A . 3B and 3C by way of example, this section-wise fixing compound 28 For example, be designed by punctiform connections, annular strip connections or radial strip connections of different sizes and numbers. The person skilled in the art will readily be able to recognize numerous further variants for section-wise fixation connections.

At the in 2 and 3 illustrated embodiment, the distance between the sealing film 26 and the internal thread 24 of the lid 16 in comparison to the embodiment of 1A and 1B increased. Consequently, the positioning of the external thread 22 on the edge 14 the container opening 12 be adjusted accordingly. Alternatively, the position of the internal thread 24 on the lid 16 or the radial dimension of the edge section 20 of the lid 16 according to the container 10 be adjusted.

Incidentally, this embodiment corresponds to in 1A and 1B shown packaging and a new description of the other components and their advantages is therefore omitted.

4 shows a third embodiment of a lid of a package according to the invention.

This lid 16 from 4 differs from that of the first embodiment of 1A and 1B by the design of the web 30 ' , While at the lid of 1A and 1B the jetty 30 from the closure plate 18 in the axial direction towards the container 10 protrudes, the jetty protrudes 30 ' in this third embodiment of the edge portion 20 of the lid 16 essentially radially inward.

The other components and arrangements correspond, for example, to those of the first embodiment.

In 5 a fourth embodiment of a lid of a package according to the invention is shown.

This embodiment differs from the ones described with reference to FIG 1 to 4 described embodiments by the nature of the fixing connection 28 ' between the sealing film 26 and the lid 16 , While the sealing film 26 in 1 to 4 on its side facing away from the container side surface with the web 30 or the closure plate 18 of the lid 16 connected is the sealing film 26 here about their radial peripheral surface at the edge portion 20 of the lid 16 fixed.

Further, in the closure plate 18 of the lid 16 This embodiment, a viewing port 38 intended. This view opening 38 For example, it is provided substantially centrally and, for example, by a transparent or non-colored plastic area within a plastic lid 16 educated. On the closure plate 18 of the lid 16 facing side surface of the sealing film 26 For example, an imprint or the like may be provided as an information surface for the consumer.

Furthermore, it is possible in the interspace 40 between the closure plate 18 of the lid 16 and the sealing film 26 to bring smaller items (eg as an additional advertising measure), the user through the viewing opening 38 can see through. After opening the packaging for the first time, the interior is 40 then freely accessible to the consumer, as the sealing film 26 from the lid 16 has separated.

The other components and arrangements correspond to those of the first Embodiment.

Referring to 6 another embodiment of a lid of a package according to the invention will be described.

The lid 16 from 6 differs from that of the previous embodiments by the type of closure technique in combination with the container 10 , While the lids 16 from 1 to 5 each with an internal thread 24 for screwing on an external thread 22 of the container 10 were formed, the lid points 16 of the present example at its edge portion 20 a radially inwardly projecting projection 36 on, in a corresponding recess or recess (not shown) on the outer periphery of the edge 14 the container opening 12 can snap.

The other components and arrangements correspond to those of the second Embodiment.

Of course, the features of the above with reference to the accompanying drawings be written embodiments are combined in any way with each other. For example, the snap cap of 6 also with the packaging of the 1 to 5 be applied. Likewise, the viewing opening of the lid of the fourth embodiment can also be used in the other embodiments.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3920324 A1 [0004]
• - DE 9108868 U1 [0004]
• - DE 4020371 C1 [0005]

Claims (13)

Cover ( 16 ) for closing an opening ( 12 ) of a container ( 10 ), with a sealing foil ( 26 ), to an edge ( 14 ) of the container opening ( 12 ) is sealable, wherein the sealing film ( 26 ) tear-open and / or tear-off to the edge ( 14 ) of the container opening ( 12 ) is attachable, characterized in that the sealing film ( 26 ) directly on the lid ( 16 ), the fixation compound ( 28 ) between the sealing film ( 26 ) and the lid ( 16 ) is weaker than the intended sealing compound ( 34 ) between the sealing film ( 26 ) and the edge ( 14 ) of the container opening ( 12 ). Lid according to claim 1, characterized in that the sealing film ( 26 ) with its container opening ( 12 ) facing away from side surface and / or with its radial peripheral surface on the lid ( 16 ) is fixed. Lid according to claim 1 or 2, characterized in that the sealing film ( 26 ) substantially over the entire surface of the lid ( 16 ) is fixed. Lid according to claim 1 or 2, characterized in that the sealing film ( 26 ) in sections on the lid ( 16 ) is fixed. Lid according to claim 4, characterized in that the sealing film ( 26 ) via one or more connection points, strips and / or surfaces on the cover ( 16 ) is fixed. Lid according to one of claims 1 to 5, characterized in that the lid ( 16 ) a footbridge ( 28 ) having the sealing film ( 26 ) against the edge ( 14 ) of the container opening ( 12 ) presses when the lid ( 16 ) the container opening ( 12 ) closes. Lid according to claim 6, characterized in that the web ( 28 ) in terms of shape and size in the radial direction of the lid ( 16 ) essentially the edge ( 14 ) of the container opening ( 12 ) corresponds. Lid according to claim 6 or 7, characterized in that the sealing film ( 26 ) at the footbridge ( 28 ) of the lid ( 16 ) is fixed. Packaging, with a container ( 10 ) with an opening ( 12 ); a lid ( 16 ) for closing the container opening ( 12 ); and a sealing foil ( 26 ), to an edge ( 14 ) of the container opening ( 12 ) is sealed, wherein the sealing film ( 26 ) tear-open and / or tear-off at the edge ( 14 ) of the container opening ( 12 ), characterized in that the sealing film ( 26 ) directly on the lid ( 16 ), the fixation compound ( 28 ) between the sealing film ( 26 ) and the lid ( 16 ) is weaker than the sealing compound ( 34 ) between the sealing film ( 26 ) and the edge ( 14 ) of the container opening ( 12 ), so that at least when first removing the lid ( 16 ) from the container opening ( 12 ) the sealing film ( 26 ) from the lid ( 16 ) but the sealing compound ( 34 ) between the sealing film ( 26 ) and the edge ( 14 ) of the container opening ( 12 ) preserved. Packaging according to claim 9, characterized in that the lid ( 16 ) and the sealing film ( 26 ) are formed or arranged according to one of claims 2 to 8. Method for sealing a container ( 10 ) with an opening ( 12 ) through a lid ( 16 ) is closable, with the steps: providing a lid ( 16 ); Fixing a sealing foil ( 26 ) directly on the lid ( 16 ); Closing the container opening ( 12 ) with the lid ( 16 ); and sealing the sealing film ( 26 ) to an edge ( 14 ) of the container opening ( 12 ), the fixing compound ( 28 ) between the sealing film ( 26 ) and the lid ( 16 ) is formed weaker than the sealing compound ( 34 ) between the sealing film ( 26 ) and the edge ( 14 ) of the container opening ( 12 ). A method according to claim 11, characterized in that when closing the container opening ( 12 ) with the lid ( 16 ) the sealing film ( 26 ) against the edge ( 14 ) of the container opening ( 12 ) is pressed. Method according to claim 11 or 12, characterized in that the lid ( 16 ) and the sealing film ( 26 ) are formed or arranged according to one of claims 2 to 8.