WO2003066455A2

WO2003066455A2 - Turned-over beverage can with a bottom opening

Info

Publication number: WO2003066455A2
Application number: PCT/DE2003/000371
Authority: WO
Inventors: Bertold Bast; Bernd Ullmann; Rainer Berkefeld
Original assignee: Ball Packaging Europe Gmbh
Priority date: 2002-02-09
Filing date: 2003-02-08
Publication date: 2003-08-14
Also published as: DE10390366D2; WO2003066455A3; AU2003208291A1

Abstract

The invention relates to a thin-walled can body for receiving a liquid content, comprising a first end section (1a,1a',1a'), a substantially cylindrical intermediate section (1c) and a second end section (1b). Said second section lies opposite the first end section, wherein the intermediate section (1c) connects both end sections and defines the interior (I) of the thin-walled can. A circular folded edge (1c*) is arranged in the second end section (1b), which is embodied to form a fold (F) with a closing edge (1b*) of a closing lid (1b'). The intermediate section is closed on one side by a substantially flat mirror (1b') without any opening that can be uncovered. An opening (4a) is provided in the first end section (1a), which is tightly closed but can be uncovered by a closing part (3), wherein the opening is arranged substantially in the center in a section (1a') of the first end section (1a) that is curved towards the interior (I) of the can.

Description

Inverted beverage can with bottom opening

The invention is concerned with a beverage can which is to be described as a thin-walled can. In the prior art, these beverage cans are generally made from sheet metal with a wall thickness of less than 0.24 mm. Preferred are beverage cans, i.e. thin-walled cans for receiving a beverage, preferably a carbonated beverage, with which the can is additionally stabilized due to the internal pressure after it has been closed, so that it does not or only prevents mechanical deformations from the outside (caused by the user's hand) is insignificantly deformable.

From the prior art, cf. US-A 2001/2532 (American publication) or US-B 6,230,913, straws are known as drinking aids, which are inserted into a container which can be explained as an elastically deformable bottle made of plastic. The straw used is kinked, has a fold-shaped bellows at the kink and is mechanically clamped at the edge of the filling opening for filling through the drinking opening, cf. there abstract and page 2, section 32. After filling, the pretension of the drinking aid can be released by mechanically deforming the bottle, the drinking straw abutting the inner side of the cap closure. The drinking opening and the filling opening are the same openings, and the straw is also inserted through this drinking opening into the interior of the container.

In contrast to the prior art, the object of the invention is to improve conventional beverage cans with regard to several known and long-standing disadvantages. Among these disadvantages, individually or in combination, are those mentioned below.

The known beverage cans are not resealable. When consuming the last remainder of the beverage content, it is not possible to drink well from the beverage cans

Named "head-back syndrome".

A complete emptying of the residue cannot be achieved (if the head-back syndrome is avoided), even if this way of drinking is used, a small amount of residue remains in the beverage can. - A lip contact necessary for drinking with the lid mirror in the vicinity of the drinking opening is a weak point of beverage cans in the eyes of the user. These four problem areas have already been addressed in different ways in the past, in particular drinking aids in the form of straws are known that come out of the opening when opened, cf. the above writings as well as the use of a straw in a beverage bottle under the "Pop Straw" brand, which has become accessible through use. With this design in the prior art, drinking from the bottle is more pleasant and it is resealable. In the prior art, the implementation or the transfer of the reclosability to beverage cans regularly leads to complicated new lid geometries, which make it necessary to redesign production lines during filling, which is undesirable. The problems described above should therefore be solved by the invention, in particular in combination, without imposing on the fillers of the cans, to make changes in their filling lines.

To solve this, claim 5 and a method are proposed. Components used are the subject of claims 1 and 8.

The cans according to the invention do not lose their stackability. The filling takes place in the manner of a normal can filling, so that production lines do not have to be changed over.

Protection against overpressure can be achieved when the thread is opened for the first time by interrupting the thread with an axial groove, thereby preventing the cover from being shot away when it is opened.

The reclosable opening lies in an end section which is in particular domed inwards (claim 1), in particular essentially in the center thereof. In the case of conventional beverage cans, this section corresponds to a retracted base section, so that the closure cap can be surrounded by a stand-up ring which engages in a correspondingly encased design of an overlying end section of a stacked can in order to

To ensure stackability. In conventional beverage cans, the necked-in end section corresponds to that section which contains an opening system, but is here designed without an opening system.

The opening system according to the invention is resealable and is located in a bottom section. The usual beverage can is used inverted by the user, but not inverted when filling. The reclosability can be realized by a cap that does not impair the stackability of the can (claims 17 to 19).

A drinking aid can be included in the thin-walled can as a container together with the contents. It moves out of the container after the opening, the opening from which the drinking aid emerges when opening is not the opening through which the thin-walled can was filled, rather the drinking aid is moved out at that end section of the thin-walled can which opposite the person filling.

The driving out of the straw (as a drinking aid) due to the mechanical tension added to the straw occurs automatically during opening and does not have to be taken into account by the user. The opening provided for moving the drinking aid is reclosable (claim 10).

The reclosure with the cap ensures that the drinking aid is pushed back into the interior of the container and the pretension can be built up again. A reopening of the reclosable container ensures that the drinking aid reappears due to the stored (mechanical) energy, irrespective of the amount still left in the can.

The invention thus has significant advantages over solutions of the prior art in which the movement of a drinking aid is only effected by buoyancy forces of the liquid.

The closure with the closure device is done in such a way that the closure device is placed on an insert part, locked by a rotary movement and thus re-closed, which insert part in one of the

Bottom geometry of a conventional beverage can-like end section is arranged tightly (claim 2, 11, 12).

In the insert part, the drinking aid, preferably as a drinking straw (claim 13), can be guided laterally, which radial guidance does not have to be direct contact (claim 16), but can ensure that when opening the drinking aid is reliably released from the opening Drinking opening emerges essentially axially. Air can flow between the straw and the guide when drinking. The guide for the drinking aid is arranged near this opening, in particular in axial alignment or even in this opening (claim 11) in order to allow the spatial / geometrical assignment of the drinking aid to the exposed opening section and at the same time to promote filling of the beverage can earlier in time ,

The filling takes place in the manner of a can filling in a filling line, the initially larger opening (the open end of the body) serving for filling the drink, this opening then being closed with a lid provided without a locking system on a folded edge (claim 1).

The user can remove the drink via an inserted drinking aid at the opposite end by using the previously described reclosure system (claims 6, 7).

The guide is designed so that it works well and with little friction together with a straight section of the drinking aid. An intermediate stop on the drinking aid can prevent the mechanical pretension from driving the drinking aid too far out of the interior of the thin-walled can.

The bias can be provided as an internal residual stress of the drinking aid (claim 14). This can be achieved by an at least sectionally spiral shape in the interior of the can or a bend, diffraction or a bellows-shaped section.

During production and filling, the drinking aid does not have to be passed through the consumption opening, but can first be introduced through the larger opening of the fuselage, which is open on one side, with the opposite end closed with the reclosable removal opening. The can is filled through the same opening, with a subsequent closing of this opening via a fold section. The larger opening closed in this way can no longer be opened by hand, rather the opposite - reclosable - opening is provided for the user. This opening is closed during filling, so that the drinking aid at this opening is blocked for an outlet during filling (claim 7). The drinking aid can be fixed at the opening that is used for filling by a special form of installation of the end of the drinking aid on this side. The mechanical pre-tension is already brought into the drinking aid.

The drinking aid is put under tension when it is filled and can receive this tension again when the user closes the reclosable drinking opening.

In the process of filling and closing, the function of the filling opening as an open fuselage end and its closing with a beverage can lid can be seen. The container which has not yet been closed is the subject of claim 1 as a thin-walled can, for use in an intended method, but oriented towards the manufacturer of the can according to claim 1, which are supplied to the bottler for use.

Thin-walled containers can already be provided with a pretensioned drinking aid so that it does not jump out of the container and is completely absorbed by the container, the drinking aid being supported near the open end in order not to hinder the filling. The drinking aid can also be inserted by the user after opening.

At the non-open end a reclosable closure is arranged, the guidance of which is suitable for guiding the drinking aid at the later opening by the user at this point, for example controlling a driving out and allowing the uncovered opening to be closed again and the pretension to build up again in the drinking aid. The insertion is also guided laterally. This is based on the user who has the (filled) can according to claim 5 in front of him and can use it in the manner described in claim 6. But can also introduce a stalk for the first time.

The opening originally used for filling is closed for this state of the beverage can (claim 7), but offered the bottler the possibility of using a can filling instead of a bottle filling. He does not have to change his filling lines when using the container body according to claim 1. Exemplary embodiments explain and supplement the invention.

FIG. 1 is a cross section through a closed beverage can 1 with a drinking aid 17 provided inside the beverage can.

Figure 1a is an enlarged detail of a first and a second

End section of two beverage cans which are stacked and between them the closure 2 with cap 3.

Figure 1b is an alternative design of the drinking end 17a 'of a drinking aid for use in Figure 1.

FIG. 2 is a thin-walled beverage can 1 in an intermediate state during manufacture, with a bottom opening 11 in the dome-shaped area 1 a ".

Figure 3a illustrates the opening of a closed beverage can with an internal drinking aid by removing the cap in the direction v.

FIG. 3b is a first design of a drinking aid 17 when inserted into the fuselage 1c, 1a which is open on one side.

FIG. 4 is a second design of a drinking aid 17 after it has been inserted into a body of a thin-walled beverage can that is open on one side and fixed near the open end 10.

The thin-walled container described is described in the example as a beverage can, which can be easily recognized in all figures. However, other containers can also be used. These containers are described with an intermediate section 1c, which is essentially cylindrical in the case of a beverage can, and an end section 1b, which is closed in the case of a beverage can with a closure lid 1b 'via a folded edge F. An essential section of the lid is the lid mirror 1b ¹ , which has no opening system for opening by hand.

Opposite, the intermediate section is closed without a folded edge. In this end section 1a, which in the case of a beverage can is provided with a curvature 1a '' facing the interior I, a reclosable closure 2 is provided in the center, which has a closure cap 3. The reclosable closure, or rather its closure cap 3, is one Surround the support ring 1a ', a transition region 1a''being arranged between the support ring 1a' and the dome-shaped section 1a ", which is made steeper or stronger in a post-forming process or in a forming operation. The entire (filled and closed) beverage can 1 has in this description a body 1a, 1c, which is closed on both sides, but can be opened on a closure system 2, which is arranged in the area of the bottom of a conventional beverage can so that a stack over the contact ring 1a 'is still possible, which projects axially from the inside. When it is stacked, it engages in the folded edge F of an underlying can, or the folded edge extends radially over the stand-up ring, the cans being stacked upside down with respect to conventional cans, with their drinking opening upwards, but which is arranged in a base area of a conventional beverage can , The lid area used in a conventional beverage can with a closure system for tearing open forms a base in the packaging described here, which cannot be opened by hand and which is stacked over the reclosable closure described above.

From the description of the stacking, constructive designs for radial dimensions and axial heights result, which will be described later with reference to FIG. 1a.

Figure 1 is used for orientation, which must also be presented in the reverse state when a fully filled can with a drinking aid 17 therein is described below.

The closure system 2 is generally provided for downward filling, as will be explained later with reference to FIG. 3b; for the user, the beverage can according to FIG. 1 is in the state as it is drawn in FIG. 3a. 1b shows an alternative opening system for the use of FIG. 1 or the inverted state of FIG. 3a.

Before the body to be filled according to FIG. 3b or in an alternative design of the drinking aid 17 in FIG. 4 can be filled and closed, it has to be produced, which is to be described in more detail with a beverage can body according to FIG. 2 which does not yet have the resealable closure 2 , instead has a bottom opening 11 and already differs in this respect from a "conventional" beverage can, to which reference can be made in the rest of the shape of the fuselage according to FIG. The designs used for FIG. 1 are produced in the course of the manufacture of an elongated can body which, after being stretched, is provided with a bottom opening 11 which is arranged essentially in the center. The axis 100 is drawn in here to enable an orientation axially and radially.

The cylinder coordinates should be used for the description.

In a raw state, before the hull that can be filled by the bottler is finished, the beverage can has the shape according to FIG. 2, with the base ring 1a ¹ as a stand-up ring and the base 1a "curved towards the inside," inside the stand-up ring 1a '. In this curved section is the Bottom opening 11 is provided which, in the course of manufacture and use, becomes a drinking opening when the can can be turned over after the opposite section 1b has been filled and closed. The intermediate section 1c of the fuselage 1 is essentially cylindrical and provided with a thin metal wall which is less than 0.24 mm thick.

At the opposite end 1b there is a necked-in section 1c "which merges into a folded edge 1c * (flare or fuselage hook). The opening 10 of this end has an inner diameter dio which lies within the folded edge 1c * and is larger than that opposite opening 11.

In the embodiment of FIG. 2, a reclosable closure system 2 is inserted from the end section 1a, which will be described in more detail with reference to FIG. 1a. If the closure system is inserted, it is still closed and can accommodate a drinking aid 17 inserted from the larger opening side 10 in one end section and block it at an outlet on the side 1a.

When inserting the drinking aid, as can be seen from FIGS. 3b and 4, it is placed under a pretension which is based on a contact point from which the drinking aid has a curvature, bend or spiral partial winding. The jetty is close to the future fold edge F, but has a distance g or h from it. After the drinking aid 17 has been introduced, starting from the contact point near the open end, it has an angle α which is oriented away from the wall 1c and is greater than zero. It is preferably> 30 ° in order to support the end 17b or 17b 'of the drinking aid 17 on the inside of the can on the wall in such a way that the drinking aid does not slip or protrude axially on the filling side 10 despite the mechanical pretension formed. 3b and 4, the drinking aid 17 is arranged in the interior under an internal prestress. It is guided close to the initially closed opening, which is achieved by the insert part 4, which is located under the closure cap 3. The closure cap 3 covers the reclosable closure, in order to push the drinking aid, at least a portion of its length, far out of the opening when exposing the opening which corresponds to the position of the opening 11 in FIG.

The pressing out takes place essentially axially, which can be ensured by the guide 4c. The guide is designed so that it generates little friction, but ensures sufficient axial guidance and at the same time allows the user to flow into the interior I of the beverage can when the user is drinking (in the sense of sucking drinking) according to FIG. 3a and with the closure cap 3 removed , between the outside of the drinking aid 17 and the inner edge 4c as an example of guiding the insert 4.

Other base parts 4 or shape designs on the dome-shaped section 1a "are also possible, for example a purely metallic guide with a corresponding design and with a corresponding design of the base section, a metallic insert part, or the plastic insert part 4 to be described later, which uses the aforementioned

Guide 4c as a peripheral edge near the outer surface of the drinking aid 17 in the front portion 17a when the closure 3 is still closed. Opening the closure 3, for example by loosening a bayonet-like fastening technique or by loosening a threaded engagement, causes the drinking aid with the front section 17a, which is also referred to as the first end, to be forced out of the opening - not necessarily by touch, but by limitation the maximum evasive movement - of the guide 4c, which is designed at least in sections, at the inner end region of the insert part 4 shown more specifically in FIG.

The guide 4c, the closure system 2 and the stacking should still be explained with reference to FIG. 1a, as can be seen from the previous explanations. In this regard, the figure concerned is only a section of two can bodies shown in the stacking area. As far as elements have been described above, they can be transferred with their reference numerals to this figure 1a. This relates on the one hand to the drinking aid 17 with its first end section 17a shown here as the drinking section. This also applies to axis 100 as a guide, and the lower one End 1b 'of the upper box and the upper end 1a of the lower box, based on the stacking direction and the position of Figure 1a.

When stacked, it can be seen that the fold area F of the upper box engages radially and axially over the support ring 1a 'of the lower box with its upper end, which is referred to as the first end or the first end section. The closure system 2, consisting of a removable cap 3 and insert 4, is provided below the cover mirror 1 b 'of the lower end 1b of the upper box.

A distance between the upper end of the closure 3 and the lower surface of the cover mirror 1b ', which is denoted by "c", is maintained here. This distance c is made up of two dimensions d and e. "e" is the dimension from the lid mirror 1b 'to the level which is formed by the axially highest point of the contact ring 1a' of the lower box.

This stand-up ring no longer serves as such a ring for placing the can, but it is directed upwards and serves to radially guide and support the stacked lower end of the upper can.

The distance d to be supplemented is that of the described plane of the ring 1a from the upper end of the closure 3. Both distances add up to the distance c, which avoids touching the upper end of the closure cover 3 and thus a reliable guidance and support of the folding closures F. guaranteed radially outside of the contact ring 1a 'and axially below it.

Another measure has to be added. It is the dimension a, which extends from the underside of the mirror 1b '(panel) to the point at which the fold closure F radially outside and axially below the stand-up ring 1a' on the lower box in the region of its (retracted) upper end section 1a is applied.

In the orientation shown, the mirror 1b 'is a floor mirror which is surrounded by a compensating groove N near the fold area F.

The closure 2 with the closure cover 3 will be explained in more detail, which is clearly evident from the sectional drawing of Figure 1a. A thread 3a is provided which connects the closure cover and the insert part in a resealable manner. A sealing ring 3b is effective in the closed state and seals the internal pressure in the interior I of the lower box relative to the cylindrical section of the insert part 4, a compressive stress being built up between the closure cap 3 and the end of the cylindrical section 4b of the insert part 4. The drinking end 17a of the straw 17 also bears against the inside of the closure 3, caused by a built-up compressive force or mechanical preload which is generated in a tension section 17d of this straw.

The guide 4c is provided as an inner edge of a lower inner end portion of the cylindrical portion 4b of the insert 4. This part has a ring section 4d radially outside and axially slightly above the guide 4c, which is fitted into the opening which has been designated 11 in FIG. 2. A connection is provided at this point, a collar, which is bent axially outward, preferably being formed from the curved dome section 11a "of the upper end 11a of the can. The radial collar 4d (ring section) of the insert part 4 becomes firm, that is to say provided tightly against pressure with the edge region of the opening 11, for example by gluing or some other mechanical connection.

This results in the distance f, which extends from the described upper side of the closed closure 3 to this collar, which essentially corresponds to the axially lowest point of the remaining bottom section 1a ".

The radially inner end 4c forms the guide for the drinking end 17a and also the sections of the drinking straw which follow linearly thereafter, which through the tension section 17d - guided by the inner guide 4c, not necessarily by touch - when the closure 3 is opened from the can emerges.

The reshaped section 1a "'in FIG. 1a is steeper than that section of a conventional can body with a curved bottom section 1a". This is done by post-forming.

The molding in on the necked-in section 1c "at the lower end of the upper can corresponds to a necking in of the upper end of a conventional beverage can, in which the closure lid 1b 'has an opening system by tearing or pressing in. Accordingly, the upper end of the lower can is also retracted, what is symbolized by the section 1c 'of the cylinder wall 1c, these indentations are coordinated with one another, the engagement action of the folded edge F described radially outside and axially below the upper ring section 1a' (the "contact ring"). The illustrated distance between the guide 4c and the outside of the straw 17 serves for the inflow of air when a drink is removed in the open state (cf. FIG. 3a). An alternative design of the stalk end 17a is symbolized in FIG. 1b, with the rest of the design of the guide of the insert part similar to that described above in FIG. 1a. The straw here has a bead region 18 which is provided at the upper end and with which it is to be avoided that it can be pressed down by pushing it over the inner guide edge 4c. He thus blocks the straw against loss of leadership.

The screw cap 3 is formed similarly to that of FIG. 1a, only the essentially cylindrical circumferential collar 1a * of the edge region of the opening 11 of FIG. 2 is designated here, which collar section 1a * has a curved bottom section into the weakly curved curvature 1a "of the dome-shaped Bottom of the upper end 1a of the box 1 passes.

With the inner guide 4c, the inner opening 4a is also described, through which the straw with its drinking end 17a, which can be essentially linear according to 17e according to FIG. 1, extends. This opening 4a has a smaller dimension than the manufacturing opening 11, into which the insert 4 is introduced in a sealing manner.

The opening movement according to FIG. 3a when opening the closure part 3 of the closure 2, which can be actuated by rotation, is symbolized by driving out the linear (axial) section 17e of the straw 17, which is under internal tension due to a curved section 17d. Its contact point is provided at an angle α (in a first approximation) and at a distance g, but close to the lower end 1b '(of the closing mirror) of the end section 1 of the closed box. This can (comprising the cylinder wall 1c and the upper section 1a and the closed "lower" section 1b) is filled with a drink which can be removed after the linear section 17e has been driven out through the channel opening 17c. The distance b essentially corresponds to the distance b1 from FIG. 1.

Moving the straw out is controlled by the internal preload, as can be seen in FIG. 3a. The internal prestress provides for at least partial relaxation of the lower section of the drinking aid which causes the prestress, the extreme end of which is supported on the edge of the can, at the angle α described above. The release of the bias does not have to be complete, but leads to a stop 19, which is in an approximately rectilinear section 17e the drinking aid 17 (the straw) is arranged. The stopper 19 has a distance b from the end 17a of the straight section 17e of the drinking aid 17, so that the width b1 can be limited by which the drinking aid 17 is pressed out of the opening by the mechanical prestress. The dimension b is slightly larger than the dimension b1, based on the height of the insert part 4.

The introduction of the stalk 17 to be placed under tension is explained in FIG. 3b. Here, the can is shown in the reverse state, as can be seen in the finished state in FIG. 3a. It should be taken into account here that the manufacturer of a beverage can with an inserted straw 17 delivers exactly those objects which can be seen in FIGS. 3b and 4. They are suitable for can filling, which is not a bottle filling. So such a filling, in which the drink G is filled in from the larger opening 10 (for example with a socket S) and this opening is then closed with a lid with a cover mirror 1b 'and fold edge 1c *, via a fold F, as before described. Then the can can be turned over while the cap 3 is still closed.

The alternative design of the drinking aid 17 can be seen in FIG. 4, which has a greater curvature in the lower end section of the straw in its tension section. This section 17b ', which extends from the contact point at a distance h from the upper fold edge 1c * at an angle, is in substantial parts of its axial extent close to the drawn-in section 1c ". A subsequent curvature can be designed two-dimensionally or three-dimensionally accordingly the curved section 17d, which was described above, opens out into a linear piece 17e via a transition section, at the front end of which lies the drinking section of the straw 17a.

An opening, which is symbolized in FIG. 4, but does not occur at the time when the lower opening 10 is not yet closed, is intended to symbolize the removal of the drink by removing the cap. It is shown in FIG. 4 at the lower end section here (when filling), but when removing the upper end section, that the cap 3 is put on for reclosing. During reclosing, the drinking end 17a of the straw 17 is pressed in, in order to space the stopper 19 from the insert part 4. Screwing the cap 3 onto the thread 3a ensures a tight fit, a tight closure and a storage of potential energy (in the form a spring tension), this energy can be rebuilt as often as required and by removing the cap is released at which release the drinking end is pressed out of the beverage can.

The voltage end 17d can take on several configurations, two of which have been described, for example, in FIGS. 3a, 3b and 4. Intermediate forms are possible as well as deviations of the concrete geometric form from the examples shown.

Likewise, the guide 4c can be modified according to FIG. 1b or FIG. 1a, be it in the radial direction or be it in the axial direction. Specifically shown is the formation of the guide 4c in the drinking opening 4a, which remains after the insertion of the insert 4 in the mounting opening 11.

The cap-shaped closure 3 can also be changed in diameter. For example, it can be made larger than in the form shown in FIG. 1b or 1a, in which it each has a smaller diameter than the intermediate section 1c of the beverage can.

If the beverage can is closed, the last-mentioned section is formed into a folded edge F (for example a double fold closure), which is then also designed to be pressure-tight. The pressure component built up in the can after closing is greater than the external pressure, so that an additional mechanical stabilization occurs which secures against mechanical deformation of the cylindrical section 1c. If there is mechanical stability, the drinking aid cannot be changed in its inner position with its lower end or with its remaining sections in the filled state, unless the closure 3 is opened, which leads to an axial upward movement of the drinking aid.

Even in the non-closed state and in the not yet filled state, in which the beverage cans with a provided straw leave the can manufacturer's factory, the straw is secured or fixed, on the one hand at the reclosable end 2 (by contacting the inside of the cap 3) and on the other hand by supporting and non-slipping contact of the end 17b near the open end, through which the can filling is to take place at the bottler.

The bottler fills the can as it is delivered to him, without having to change his filling line. It is practically unaffected by the fact that the supplied beverage can already has an inserted drinking aid that does not protrude axially and therefore the Filling can not hinder. The can is filled in the normal process, as are customary beverage cans which have no drinking aid and no reclosable opening in the dome-shaped base section 1a ".

Nevertheless, the drinking aid has a residual stress already specified by the manufacturer of the preform, which can be applied and used by the user (after filling). The energy is stored by locking the reclosable end, the filling has no effect on it.

The fixation of the straw at the other end can be improved in that more than just one contact point is made available, for example a pitch circle which rests on the retracted upper end, as can be seen from FIG. The pitch circle has a larger diameter than the opening 10 with its diameter dio in order to prevent the stalk 17 under tension from slipping out with its tension end.

It is understood that when an insert 4 is used in the manufacturing opening 11, a connection technique is used that is tight against pressure and liquid, such as gluing, sealing or a sealing compound or sealing rings that are used. A snap lock is also possible with an additional pressurized seal to seal against excess pressure. Direct injection molding into the opening 11 is also possible. The molding can take place from the outside axially or from the inside axially.

To build up the tension section 17d or 17d ', the straw 17 can be 10% to 50% longer than the axial extent of the beverage can. If a helix or a partial helix is provided as an "at least sectionally spiral" design, the number of revolutions (in the φ direction) can be selected between 0.5 and 3. In exceptional cases, a winding size of up to five

Revolutions. The slope of the straw in this area is then relatively flat, but becomes steeper towards the linear section 17e.

The spiral configuration does not necessarily have to be symmetrical, that is to say have the same axial extent of the 360 ° turn of a respective helical section. For example, it may be advantageous to choose a very small distance, possibly zero, in the area of the necked-in section 1c ". A circle formed in this way can no longer emerge from the filling opening 10 under tension because it comes from the neck 1c" in the can Inside I is kept. When using the filled beverage can, in which the opening 10 described last is closed, no element is pressed into the interior of the can when it is opened. A possible omission of the stopper 19 can ensure that a user pulls out the straw 17 with his mouth further than the internal mechanical tension of the tensioning section would move it outwards.

The previously described sections of the drinking aid are to be added. The drinking aid 17 has the described tension section with the support end 17b and has the described exit section 17e with the drinking end 17a. In between there is a bend section 17d which applies the prestress. This section can be pre-bent, can have a bellows or can be designed in the form of an at least partially circumferential spiral 17d '(oriented in the z-direction and φ-direction of the cylinder coordinates).

Depending on the specific design of the tension section 17d or 17d 'according to FIG. 4, the contact point of the free end 17b or 17b' lies at a more or less small distance g or h from the folded edge of the can body which has not yet been closed.

The three influencing parameters mentioned are matched to one another in such a way that the purpose described above is achieved. The angle is chosen appropriately, the contact point at a distance g, h from the fold edge 1c * is chosen so that the contact point is close to the fold edge, and the specific spatial design of the tension end 17d of the drinking aid 17 is also matched to this.

Needless to mention is the inner channel 17c of the drinking aid, which can be seen from the figures. It extends between one end 17b and drinking end 17a and is continuous.

The stopper 19, which is arranged at a distance b from the drinking end 17a of the straw 17, is arranged immovably on the drinking aid, near the beginning of the tension section and still in the course of the straight section 17e.

In another example, the fixed arrangement can be released by the influence of mechanical forces if it is desired to pull out the straw 17 after use and to empty it for purposes of separate disposal. A vigorous pull on the linear guide section 17e leads to a shearing or separation of the stopper 19, which can be designed as a ring, and allows this Pulling out the entire straw 17, including its tension end through the only remaining opening when the cap 3 is removed. Without such shearing and a pulling of the straw provided with higher forces, touching the linear section 17e is not necessary for the straw to emerge, rather it becomes Movement of the internal tension fulfilled by itself, but limited by the stopper 19 described, which strikes the guide 4 or 4c in such a way that the expulsion movement is stopped.

This results in dimensions for the guide 4c in the radial direction and the stopper 19 in the radial direction, which fulfill this function, for example, as described, an annular stopper on the straw section 17e and a guide which has a radial dimension which is less than that radial extension of ring 19 on the stem.

Not shown but explainable in words is a safeguard against overpressure when opening the closure cap 3, which is provided in the thread as a vertical groove or an interruption distributed several times around the circumference. When opening, the excess pressure that is built up in the can for mechanical stabilization of a carbonated beverage is initially vented when the sealing seat of the base of the cap is released from the sealing disk 3b. A shooting away of the lid when opening can be avoided. If the thread or that

Bayonet reaches the last incline shortly before taking off, it is already practically depressurized.

Also not shown, but easy to explain in Figure 1a is a fuse between the removable (unscrewable) cap part 3 and the rest of the insert part 4 against opening or just a display that indicates by breaking a seal or removing a lock that the cap has already been used was open and the closure 2 is therefore no longer in its original condition.

Claims

Expectations:

1. Thin-walled can body ("can") for receiving a liquid content, with a first end section (1a, 1a ', 1a "), a substantially cylindrical intermediate section (1c) and a second end section (1b), which second

End section is opposite the first end section, the intermediate section (1c) connecting the two end sections and defining an interior (I) of the thin-walled can, and wherein in the second end section (1b) a circumferential folded edge (1c *) is arranged and thus formed with a sealing edge (1b *) of a sealing cover

(1b ¹ ) to form a fold (F), and thereby to close the intermediate section in the second end section (1b) on one side with a substantially flat mirror (1b ¹ ) of the closure cover without an exposed opening; an opening (4a) is provided in the first end section (1a), which is sealed tightly, but is exposed, via a closure part (3), the

The opening in a section (1a ") of the first end section (1a) which is curved towards the interior (I) of the can is arranged essentially centrally.

2. Thin-walled can body according to a first of the preceding claims, wherein the exposed opening (4a) is formed by an insert part (4) which is firmly and sealingly inserted into a larger opening (11, 1a *) in the first end section (1a), around

(i) the radial guidance to the interior (I),

(ii) to provide a connection zone (3a) to the outside for opening and closing the exposed opening.

3. Thin-walled can according to claim 2 of the preceding claims, wherein the insert (4) is essentially made of plastic.

4. Thin-walled can according to one of the preceding claims, wherein the can in the closed state before the first opening is pressure-resistant against mechanical deformation due to an internal pressure; the drinking aid (17) in the interior is essentially stable so that its position in the interior (I) of the can cannot be changed from the outside.

5. Filled beverage can with a beverage (G) in an interior (I) and a lid (1 b ') which cannot be opened by hand on a folded side (F, 1b) of the beverage can and a reclosable opening section (4,3) in an opposite one Section (1a) of the beverage can, which has an opening section

(i) a plastic segment (3a); (II) a closure (3) which is guided on the thread segment and seals against pressure.

6. Beverage can according to claim 5, with a drinking aid located in the interior

(17), for moving a portion thereof out when the closure is opened and for removing the drink above or through the drinking aid (17).

7. The beverage can according to claim 6, wherein the axial movement of the drinking aid on the closure is locked in the closed position, relative to that

Opening used to fill the beverage can.

8. insert part (4) for a thin-walled can body according to one of the preceding claims, wherein a closed with a closure but exposed opening (4a) is formed in the insert part (4), which insert part in a

Opening (11, 1a *) in the first end section (1a) via a collar (4d) from the inside axially (I) is firmly and sealingly insertable

(i) a connection zone (3a) to the outside for opening and closing the exposed opening (4a); (ii) to the interior (I) an opening (4c) for removing a content of the

Can body; provide.

9. Insert part according to claim 8 of the preceding claims, wherein the insert part (4) is essentially made of plastic.

10. Thin-walled container body ("container") according to one of the preceding claims, wherein the initially closed opening is closed with a closure part (3) reclosable, in particular via a thread system (3a).

11. Container according to one of the preceding claims, wherein a guide (4c) for a drinking aid is located in the initially closed opening (4a, 1a *), in particular the opening (4a) is released from the outside, as by unscrewing a cap-shaped Closure (3,3a).

12. Container according to claim 11 of the preceding claims, wherein the cap-shaped closure part (3) has a diameter which is less than a diameter of the intermediate section (1c), in particular less than 2 cm.

13. Container according to one of the preceding claims, wherein a drinking aid (17) is designed as a drinking straw.

14. Container according to one of the preceding claims, wherein a drinking aid (17) is at least partially spiral (17b ') in the interior of the can in the closed state.

15. Container according to one of the preceding claims, wherein a drinking aid (17) has a first and a second end section (17a, 17b), each of which forms an end of a continuous channel (17c) delimited by the drinking aid.

16. Container according to one of the preceding claims, wherein the opening (4a, 1a ^* ) has a guide (4c) which has an inner dimension (4a) which is large enough to pass a longitudinal section (17e) of the drinking aid (17) ; - Is small enough, a substantial radial deflection of the section

To block the drinking aid from the opening (4a),

Allows air to pass between an edge of the opening (4a) and the drinking aid (17) to guide the drinking aid near the opening.

17. Container according to one of the preceding claims, wherein one of the second end portion (1b) farthest point of the closure (3) has only such a first axial distance (f) that the closure (3) one - corresponding to the first end portion of the container - Do not touch section of a stacked container and keep a second distance from it (e + d; c).

18. A container according to claim 17 of the preceding claims, wherein a bottom ring (1a ') of the container has only such an axially projecting dimension to keep a third distance (e) from the corresponding end portion of the stacked container in the same stacked state of two cans ,

19. A container according to claim 17 of the preceding claims, wherein the closure does not protrude beyond a plane in which a stand-up ring (1a ') of the first end portion is located.

20. Container according to one of the preceding claims, wherein a reclosable closure (2; 3,4,4a) is arranged in a dome-shaped zone (1a ") of the first end section (1a), in particular at a deepest point substantially in the center of the first end portion.

21. Container according to one of the preceding claims, wherein it is formed as a thin-walled can from a metal sheet, for filling with a liquid beverage (G) through the still open second end section (10, 1b).

22. A container according to claim 16 of the preceding claims, wherein the guide is arranged in the first end section (1a).