WO2009136836A1

WO2009136836A1 - A container and a closure

Info

Publication number: WO2009136836A1
Application number: PCT/SE2009/000226
Authority: WO
Inventors: Hugo Nilsson
Original assignee: PETRO PACK AB
Current assignee: PETRO PACK AB
Priority date: 2008-05-07
Filing date: 2009-05-04
Publication date: 2009-11-12
Anticipated expiration: 2010-11-07
Also published as: US20110186534A1; EP2285702A1; EP2285702A4; SE0801018L; RU2010150115A

Abstract

Device for a package closure comprising a cap (1) which is mounted on a package neck (2) alternative on a separately neck and where the cap in its final mounting position gives a sealing function implying that a sealing lip (10) of the neck will be pressed against an outer wall (32) of the cap, alternative that there is a further sealing lip 51 of the neck which presses against an opposite cylindrical section (33) of the cap (1) and that the complete package in this sealing position has a secured tightness and that the construction is designed in a way that a closure is obtained which gives conditions for a sterile environment in the package.

Description

A container and a closure

Present invention relates to a package closure according to the type mentioned in the preamble to claim 1.

The invention is preferably applied to flexible packages of the type milk, juice or yoghurt packages, but can naturally also be used on rigid and/or shape stable packages.

Present packages, provided with caps/closures of known technique, have a number of disadvantages which are eliminated by the present invention and the main advantages of this invention are:

- a cost-efficient manufacturing technique.

- low product cost while the present quality requirement are fulfilled. - simple opening procedure of the package.

- no "throw away" part when the package is opened.

- improved keeping qualities of the enclosed medium, because fresh oxygen cannot flow into the package after finished emptying/tapping off.

These above mentioned advantages with the new construction are realized according to the invention by that the construction according to the type stated in the preamble is pri_¬ marily realized in a way that is stated in the characteristic part of claim 1.

Additional characteristics and advantages of the invention is evident from the following description with reference to the accompanying drawings showing a preferred, but not lim_¬ iting embodiment of a package closure, realized with a cap and a package neck. In the description the invention is mounted in constructions that only are an example of an embodiment of forms of execution of the invention.

The primary part of the invention is the design of the sealing parts between cap and pack- age neck and that those parts always can be sterilized after that they are assembled, or even in that case when the neck of the package constitute a continuous, or by manufac_¬ turing of a part belonging to the package in the complete package itself, and that the package tighten and also prevents air from penetrating into the package in those cases when an over or under pressure would occur in the package.

In the now showed and described embodiment's represents in detail:

RECORD COPY-TRANSLATION (Rule 12,4) Figure 1 a cap according to a first alternative embodiment

Figure 2 a cap according to a second alternative embodiment

Figure 3 a cap according to a third alternative embodiment

Figure 4 a neck of a package according to a first alternative embodiment

Figure 5 a neck of a package according to a second alternative embodiment

Figure 6 a neck of a package according to a third alternative embodiment

Figure 7 a cap according to the first alternative embodiment mounted on a neck of the package according to the first alternative embodiment

Figure 8 a cap according to the third alternative embodiment mounted on a neck of the package according to the second alternative embodiment

Figure 9 a cap according to the third alternative embodiment mounted on a neck of the package according to the third alternative embodiment

Figure 10 a cap realized with an anti-tamper seal mounted on a neck of the package according to the third alternative embodiment.

Figure 1 shows the cap 1 in a first embodiment, partly in an exterior view - fig. 1 :1 - and partly in a sectional view - view "a-a" in an enlarged scale in fig 1 :2. The cap is preferably, independently of alternative embodiments, manufactured in HD-polyeten. This applies also to the neck 2, on which the cap is mounted. In general the cap 1 and the neck 2 are preferably produced in a quality of material cooperating with that package they connects and this because all material will be able to be reused in one and the same process. Naturally also other combinations of material may be used.

The cap in the different alternative embodiments has a number of new characteristics which are common and according to the following. Thus, the cap has an exterior surface provided with grooves 21 , partly to improve the grip and partly to obtain shape stability with minimal overall thickness of material or use of material in the cap. The exterior surface preferably has a slightly growing diameter in a shoulder part 26 extending from a ring shaped upper plane 27 and from which the vertical grooves 21 starts. The slightly growing diameter changes over to a lower cylindrical part 22 constituting the termination downwards at the cap.

Internally the cap, in the first alternative embodiment, has in its upper part, an inner ring section 24, which begins at the internal upper surface of the cap. This ring section has an extension perpendicular to the interior upper surface 28 which preferably is 1-3 mm. The ring section 24 has an outer wall 32 whose diameter is selected to cooperate with a sealing lip 10 provided on the neck 2. On the outer wall a groove 49 is provided, which preferably constitute a segment of a circle with a bow height of 0.1 mm or a V-groove or similar. This groove is located in a way that it cooperates with a sealing tip 48 of a sealing lip 10 at the neck, when the cap is mounted on the neck.

Outside the upper surface 28 - seen in radial direction - there is a plane 30. The plane 30 is not horizontal but is inclined relative the horizontal plane with approximately 5-45°, and preferably 15-30°, and with its lowest point at an outer edge 29 of the plane 30, and this is a construction detail of the present invention, which, since the plane 30 is inclined relative the horizontal plane, gives a reinforcement of the sealing function of the closure of the package. The sealing function is later in this description described more in detail.

The plane 30 and its outer edge 29 change over directly to an inner section 35 of a radius, with a radius cooperating with an outer part 8 of the neck 2, in a way that when the cap is mounted on the neck, the inner section 35 of the radius encloses the upper, outer part 8 of the neck, which has a corresponding exterior rounded section 37. The section 35 of the radius changes in the lower part over to an inner cylindrical section 33 which in its prolongation extends downwards to that part which has its interior threaded part.

In the plane 30 there is also a recess 39 located on an approved distance outwards from the interior corner 31 of the plane 30. This recess is according to dimensions and position coordinated with a heel 38 - see fig. 4:2 - in the upper part of the neck 2, where this heel 38 protrude over the upper plane36 of the neck. These both parts, the recess 39 and the heel 38 gives the construction a increased locking effect between the cap 1 and the neck 2, which means that those parts are radial coupled and accordingly their mutual position are fixed and this also in those cases of operation when the complete package is subjected to variations in temperature and pressure.

The cap is realized with interior threads cooperating with threads on the neck. These threads are not special for the present closure of a package, and therefore they are not described in detail.

The cap has an inner locking edge 23 below and where this locking edge in its upper part has a horizontal plane 25, directed into the center of the package and when the cap is mounted on the neck 2 this plane 25 snaps over an cooperating, exterior ring shaped plane 9 on the underside of a swelling 11 located on the neck 2. To open the package an increased opening moment will be needed and this owing to the cooperation which occurs between cap and neck and the cooperating planes 9 and 25. When the cap is opened the cooperating planes 9 and 25 loses their engagement. A common embodiment of a cap is that it is realized with an anti-tamper seal relative the neck. This alternative applies with advantage also in this construction, but this is not described in more detail in this application, since it is an embodiment which occurs in several packages and in several embodi- ments.

A second alternative embodiment of the cap 1 is evident from fig. 2.

The difference between the cap according to the first alternative embodiment = fig. 1 and the second embodiment is that the plane 30 extends as far as to the outer edge 29 where the plane change over to the inner ring section 35. Thus the recess 39 in fig. 1 is omitted. In addition there is in this alternative construction no groove 49 in the ring section 24 and its outer wall 32. This construction alternative of the cap will cooperate with a neck 2, according to a second alternative embodiment, and has a design described in connection with fig. 5.

A third alternative embodiment of the cap 1 is evident from fig. 3.

The difference between the cap according to this alternative compared to the alternative embodiments 1 and 2 is only that the plane 30, at the outer edge 29 of this plane, now changes over directly to the cylindrical section 33, which is directed downwards to the lower threaded part of the cap. Thus the cap according to this alternative embodiment has no recess 39 or cylindrical section 35 of radius made or carried out in the plane 30. This third alternative embodiment of the cap 1 will cooperate with a neck realized according to fig. 6.

Fig. 4 shows the neck 2 in a first alternative embodiment, partly in cross section view - fig. 4:1 and partly in a view in detail - fig. 4:2. The neck according to this embodiment will cooperate with the cap according to the first alternative embodiment, the embodiment that is described in connection with fig. 1.

The neck 2 in this first embodiment preferably has a rotational symmetric design and its dimensions is natural coordinated with which that cap which it cooperate. In its lower part the neck has a thin walled section, a skirt 6, which preferably is welded to the package, on which the neck has to be mounted.

In an alternative embodiment of the invention the neck is a part of the complete package, but in this description it is provided that the neck is a separate detail according to fig 4, fig 5 and according to fig 6. Above the skirt section the neck has a more rigid cylindrical section 5 which change over to the more or less merely cylindrical section containing the threaded part cooperating with the cap 1. On an approved distance from the upper plane 36 of the neck there is the exterior plane 9 underneath the swelling 11 , and this plane 9 cooperates with the plane 25 of the cap. This cooperation between the cap and the neck is the same for all alternative embodiments of the cap and neck respectively. The design of the upper part of the neck is unique and is that part which in cooperation with the de- sign of the cap guarantees the main sealing function of the package, when the cap is mounted on the neck.

At the top the neck, according to fig. 4:2, has a cylindrical part 44 which changes over to an exterior cylindrical part 8 that in its diameter is larger than the part 44 and where the part 8 is coordinated with the cap 1 and its outer section 35 of the radius. The outer part 8 has outwards a section 37 of the radius which means that the cap and the neck will assume a cooperating position where those both sections of the radius will be situated close to each other. The neck is upwards limited by a plane 36 which in its outer periphery changes over to the section 37 of the radius. From the plane 36 a heel protrudes upwards. The dimension of this heel and its radial position is cooperated with the cap and its recess 39.

From the plane 36 the sealing lip 10 is emanating, with a surface 40 directed inwards to the center of the neck and down to the bottom of the neck in an angle of preferably 45° in relation to the horizontal plane. The surface 40 constitute the upper part of the surface of the sealing lip 10. The sealing lip has a length cooperating with the design of the cap, in a way that when the cap is mounted the sealing lip will be in contact with the outer wall 32 of the ring section 24 of the cap. The part 40 of the surface changes over to the lover part 46 of the surface slightly angled away, ca. 1-10° and preferably 5° downwards to the package, in relation to the part 46 of the surface. In the changeiover between the part 40 of the surface and the part 46 of the surface there is a breaking edge 47, where the breaking edge has a nose or a swelling, alternative a sealing tip 48, which will give a improved sealing function of the complete sealing lip in relation to the cooperating inner ring section 24 and its outer wall 32 of the cap.

To further improve the tightness preferably the ring section 24 and its outer wall 32 has a design with a groove 49, which means that the breaking edge 47 and its sealing tip 48, when the cap is mounted on the neck 2, will assume a position implying that the sealing tip 48 is pressed into this groove 49 - see fig 7:2 and its view in detail. Accordingly the sealing tip will assume e position which implies that it is engaged with the groove 49 and that with a pressure, since the whole sealing lip 10 is forced away from its neutral position when the cap is mounted and has therefore an interior stress, which means that a sealing force is provided and those parts of the force is taken up of the sealing tip in its contact with the groove 49 in the outer wall 32. Even in those operating cases when the temperature and pressure levels vary in the package the sealing tip 48 will be positioned in its cooperating groove 49 and consequently a certain locking between the cap and the neck is obtained in this sealing point.

The lower part 46 of the surface of the lip 10 is in the final mounting position also situated in direct contact with the outer wall 32. That the lip 10 and the part 46 of the surface is inclined downwards to the package 7 and that a sealing force is provided followed by the bias of the lip 10 and its part 46 of the surface against the cooperating outer wall 32 of the cap, is of vital importance for a satisfactory sealing function. A tightness which is build up from even contact surfaces between the cooperating parts of the cap and the neck in the package doesn't give a satisfactory function in all operating positions.

The sealing lip 46 is relatively stiff and its lower or bottom side 42 - see fig. 4:2 - runs more or less in parallel with the surface 40 back upwards and changes over via a section 43 of the radius to the interior interface of the neck of the cylindrical part 44.

A second embodiment of the neck 2 is evident from fig. 5. This alternative design preferably cooperate with the cap 1 according to the second embodiment = fig. 2, but can also be used in combination with the cap according to the other alternative embodiments. In this second alternative of embodiment the neck has in its lower part a mounting plate 50, which replaces the cylindrical part 5 and the skirt section 6 which were included in the first alternative embodiment according to fig. 4. Via the mounting plate 50 the neck is connected to a package by way of usual principles, for instance welding or gluing operations, when it is about packages. On the same way as for the first embodiment the neck has, in this case, an exterior plane 9 underneath a swelling 11 and where this plane 9 is cooperating with the interior plane 25 of the cap 1.

The design of the upper part of the neck 2 differs in this second embodiment from the first embodiment according to the following.

According to fig. 5:2 the neck has a cylindrical part 44 which on the top changes over to an outer cylindrical part 8, whose diameter is larger than the part 44 and where the part 8 cooperates with the cap and its inner section 35 of the radius. The outer part 8 has out- wards a section 37 of the radius which means that the cap and the neck will take up a cooperating position, where those both sections of the radius will be situated close to each other. In diameter and radius the part 44 and the outer part 8 with its section 37 of the radius preferably are equal in the first and second alternative embodiment of the neck.

The neck is upwards limited of a plane 36, which in its otter periphery changes over to the section 37 of the radius.

Starting from the plane 36 a, preferably horizontal, sealing lip 10 extends, with a surface 40 directed into the center of the neck. The surface 40 constitute the upper part of the sur- face of the sealing lip 10. The length of the sealing lip is coordinated with the design of the cap, in a way that when the cap is mounted - see fig. 8 - the sealing lip will be situated in a clamped position and presses against the outer wall 32 of the ring section 24 of the cap 1. In this clamped position the sealing lip will be directed downwards to the package with an angle which is 15-65° in relation to the horizontal plane, and preferably with the angle 30- 45°.

The sealing lip is provided with a sealing tip 48, preferably situated ca. 0.1-1.0 mm from the outer end of the sealing lip and the sealing tip is situated slightly - ca. 0.1 mm - above the plane 36. At the interior interface of the cylindrical part 44 there is on the top a section 43 of the radius comprising a nearly 180° segment of a circle and where the section of the radius changes over to a lower surface 42 of the sealing lip 10. When the sealing lip is subjected to a force down from in its outer part, at the sealing tip 48, the sealing lip will yield downwards and thereby be bent at the section 43 of the radius. The stiffness of the sealing lip varies according to the requirements which are set by the present package, the range of application, and examples of controlling parameters for the stiffness is the sec- tion 43 of the radius and the size of this radius as well as the remaining material thickness from the section of the radius up to the upper plan 36 of the sealing lip as well as the choice of material in the neck.

A third alternative embodiment of the neck 2 is evident from fig. 6. In fig. 6:1 the upper part of the neck is modified compared with the alternative embodiment 2 and according to the following:

In this third alternative embodiment the upper part of the neck is altered in the way that to the foregoing alternative embodiment now also a second sealing lip 51 is introduced situ- ated in the same upper plane as the sealing lip 10 but directed straight outwards from the center of the neck, i.e. in opposite direction towards the sealing lip 10. This sealing lip 51 preferably has the same principal design as the sealing lip 10, but the design can of course vary within the scope of the invention. In fig. 6:1 the sealing lip 51 has a design with a sealing tip 52 in its outer end and with a more or less parallel underside 54 in rela- tion to the upper plane 36 and where this underside in its inner part, with a section 53 of the radius, changes over to the downwards directed section 44.

By designing the neck 2 with sealing lips both outwards and inwards in relation to the center of the neck, sealing element against the cap 1 and its cooperating surfaces are cre- ated, which means that the cap tightens in those cases of operation when an overpressure as well as an under pressure is established in the package. By an overpressure in the packaging it is the sealing lip 10 that tightens against the inner section 24 of the ring of the cap and this irrespective of which alternative embodiment of the neck 2 or the cap 1 is available.

By an under pressure in the package the sealing lip 51 guarantees that no air can flow into the package since the sealing lip 51 in this case will be pressed more harder upwards and out against the interior surface, the cylindrical section 33 of the cap 1. This is illustrated in fig. 9.

Additional examples of how the upper part of the neck 2 is designed and this in the scoop of the invention is evident from fig 6:2 and fig 6:3.

Those figures show examples of alternative forms of embodiments of the neck 2 and its upper part. In fig. 6:2 the neck is provided with the radial outwards directed sealing lip 51 , realized according to the above description, while the sealing lip 10 is completely omitted.

In fig. 6:3 the neck 2 has a combined sealing according to the former descriptions. Thus the neck in this alternative has a sealing lip 10 designed according to the alternative em- bodiment 1 of the neck 2 and the sealing lip 10 is in this case combinated with the sealing lip 51 according to fig. 6:1 above.

Fig. 6:2 points out an alternative embodiment which is suitable in those cases of operation when the demands for function only require a limited sealing effect.

Fig. 6:3 is in function equivalent with the embodiment according to fig. 6:1.

In order to further clarify the invention different combinations is showed in fig 7-9 of the different variations of embodiments of cap and neck respectively.

Fig. 7 shows a lateral view - fig. 7:1 - and a sectional view - fig. 7:2 - and also an enlarged view of the cap in engagement with the upper part of the neck - according to the first alternative embodiment of the cap 1 mounted on the neck 2 which is realized according to the first alternative embodiment. Here it is evident that the cooperating plane 9 of the neck 2 is in engagement with the plane 25 of the cap 1. At the same time the sealing lip 10 has assumed its final position, which means that the bottom partial surface 46 of the sealing lip and the sealing tip 48, with pressure, is in contact with the outer wall 32 and with its groove 49 of the inner ring 24 in the top part of the cap. In fig. 7:1 also the imagined package 7 is marked and the neck is suitable welded to the same and this at the bottom surface 45 of the skirt 6.

In the detail view the cap has come to that position where it is completely mounted. In this position the upper plane 30 of the cap and its outer edge 29, which is the section of the cap which at first will be in contact with the upper plane 36 of the neck, has pressed the outer part 8 downwards and thereby urged this outer section slightly down against the package 7. At this changing of position a rotational movement occurs at the top section of the neck which means that the sealing lip 10 and its lower partial surface 46 will be moved inwards and upwards to the center of the package and to a new position where the sealing lip and the contact surfaces will be pressed against the cap and its cooperating part, the outer wall 32 of the ring section 24. In this position a contact pressure is obtained be- tween the parts of the cap and the neck which means that even if the package is influenced, from for instance variations in temperatures, it still exist a tightness between cap and neck. Because the sealing lip is inclined with ca. 45°, in relation to the horizontal plane and also downwards to the cooperating sealing surface on the cap, the contact pressure which exists between those parts by closed cap will be increased in those cases when the interior overpressure in the package arises or increases during for instance the period of storage. Accordingly an enhanced interior overpressure in the package brings about that the tightness between neck and cap is improved and this thanks to the constructive design of the sealing parts. A main requirement is that even if the pressure or the temperature is altered in the complete package, the contact pressure that is provided be- tween the sealing lip 10 and the surface 32, in cooperation with the fixation which exists in the upper part of the neck between the construction details and in that case foremost the heel 38 and the recess 39 provided on the neck and the cap, secure that the cooperating surfaces will not be displaced in relation to each other.

Fig. 8 shows the cooperation between the caps 1 , realized according to the third alternative embodiment - see fig. 3 - and the neck 2, realized according to the second alternative embodiment - see fig. 5.

In fig. 8:1 the cap is only mounted to a position where the ring section 24 is come down to the lip 10 of the neck 2. The length of the lip is selected in a way that it by its continuing mounting of the cap - see fig. 8:2 - will be pressed down in direction to the package. By selecting approved connections between requirements of tightness and dimensions of the cooperating parts - in the first place the length of the lip 10 and the distance to and the length of the inner ring section 24 - a satisfactory tightness is obtained also in that case when the cap isn't mounted to its final position. Already when the lip 10 has began to en- gage the outer wall 32 a fully tightness is obtained, i.e. the package has already in this mounting position a fluid tightness, which is an advantage. The cap can after that be moved - be threaded additional 0.5-1.0 turns - down to the final mounting position according to fig. 8:2.

Fig 9 shows the cooperation between the cap 1 realized according to the third alternative embodiment= fig. 3 and the neck realized according to the third alternative embodiments fig. 6:3.

In fig. 9:1 the cap is only mounted to a position where the ring section 24 of the cap not yet has get down to the lip 10 at the neck 2. The length of the lip is selected in a way that it by the further mounting of the cap will be pressed further downwards to the package. Also in this case the dimensions of the cooperating parts - the length of the lip 10 and the distance to and the length of the inner ring section 24, the length of the lip 51 as well as the distance to the cooperating cylindrical section 33 - which is crucial for obtaining a fully tightness when the cap is in its final mounting position according to fig. 9:2.

Fig. 10 shows an additional alternative solution of the cap 1 and in this case combinated with a neck 2, essentially according to the third alternative embodiment, according to fig. 6:1. Thus the neck has the same upper section as the one described in connection with fig. 6:1 , but in this case the neck preferably is terminated at the bottom with a mounting plate 50 instead of with the skirt section 6 which is another alternative. Instead of that the cooperating plane 9 of the neck 2 engages the plane 25 of the cap - see fig. 7:2 - the cap is here realized with an anti-tamper seal 55 snapping over a resilient lip 56 on the neck and where the lip 56 is situated in a free selected height position in relation to the upper plane 36 of the neck and coordinated with the dimension of the cap, realized in a way that a lower interior plane 57 of the cap snaps in and is locked beneath the resilient lip 56 of the neck 2 when the cap has reached its final mounting position. The anti-tamper seal preferably can be mounted on free selected combination of neck and cap respectively, in the case when the neck and the cap and the cooperating planes 9 and 25 are replaced with the design that is required by the anti-tamper seal. An embodiment according to fig. 10 is only an example of the alternatives by the scoop of the invention. In Fig. 10:1 the cap 1 is only mounted to that position where the both sealing lips 10 and 51 respectively of the neck 2 is in contact with the cap and with its inner ring section 24 and cylindrical section 33 respectively. In this position the anti-tamper seal 55 has reached down to the lip 56, but not yet been snapped over the same.

In fig. 10:2 the cap 1 is mounted to its final position on the neck 2. In this position the anti- tamper seal 55 is snapped over the lip 56 and in this position the lip 56 is resilient pressed outwards to the corner 5 of the plane 57 of the anti-tamper seal. In this position the cap cannot be dismounted without breaking off the anti-tamper-sealing.

With a design where the anti-tamper seal is located underneath the opening inwards to the package the risks that today exist with some anti-tamper seal are eliminated. The present design brings about that the anti-tamper seal, also after it is broken, still is fixed, or remains hanging, on the neck and in that case underneath the lip 56. This means that the anti-tamper seal not falls away from the neck and for instance falls down into a drinking vessel or into a glass. With that the risks which exists by some of the present anti-tamper solutions is avoided.

The tightness of the cooperating parts of the neck and cap is completely crucial for the quality of the package with respect to the capability to maintain a desired cleanness or environment in the package and this during a long time, at varying storage temperatures or other varying outer factors. The whole construction is realized to manage the variations that occur by the fabrication of components like caps. This means that this new present construction permit that the process window, i.e. the process security, which is dependant of material quality, colors, manufacturing tolerances, process data etc. can be slightly widen, which means lower manufacturing costs and this with maintained secured function in the complete package.

Moreover packages usually require some form of sterilizing after that the cap is mounted on the neck. How this is done isn't primary for the construction. Important is that the constructive design of the neck or the cap, which must be realized in a way that the quality of the filled up package always is secured during the whole working life of the package.

Depending on which application the closure of the package shall be mounted, there are different requirements of the function. To manage those different requirements the neck and the cap is designed in a way that for instance different contact pressures between the sealing lip and the neck is obtained. This is possible by varying the measure "a" - see fig. 4:2 and/or fig 5:2 - alternative by making the sealing lip varying stiff and/or varying long.

Additional advantage by the new alternative constructions is that the package is reclos- able, i.e. that it always gives a fully tightness, a tightness which is the same as in the initial phase and this thanks the interior resilience and the sealing force which always is obtained when the cap is mounted on the package.

Also the axial and radial locking which is given by the construction between the cap and the package, gives en totally new function compared to existing caps.

At the final mounting position of the cap and when the neck is applied on the package the complete package has a design which gives conditions for a complete sterilizing, normally an UV-treatment, and this without causing any blocked parts by the sterilizing treatment. In the final mounting position also the cooperating planes 9 and 25 are engages, which means that it requires a certain increased starting moment by opening the package. The magnitude of this moment of opening can be chosen according to the requirements provided in the individual case.

COMPONENT LIST

I = cap 48= sealing tip 2= neck 49= groove 3= thread 50= mounting plate 4= cylindrical part 51 = sealing lip 6= skirt 52= sealing tip 7= package 53= section of the radius 8= outer part 54= underside 9= plane 55= anti-tamper seal 10= sealing lip 56= lip

I I = swelling 57= plane

21 = knurled surface 58= corner

23= locking edge

24= inner ring section 25= plane

26 = shoulder

27= upper plane

28= interior top surface

29= outer edge 30= plane

31= inner corner

32= outer wall

33= cylindrical part

34= buckle 35= cylindrical part

36= upper plane

37= section of the radius

38= heel

39= recess 40= surface

42= bottom surface

43= section of the radius

44= cylindrical part

45= bottom interface 46= bottom partial surface

47= breaking point

Claims

1. A device for a package (7) where the packaging closure is build up of a cap (1), which is mounted on a package neck (2) - henceforth called neck - and where the cap and the neck has cooperating sealing elements, one sealing lip (10) at the neck (2) which is pressed against cooperating surfaces, alternatively the sealing lip (10) in combination with an additional sealing lip (51) and the cap has in its interior a plane (25) snapping in at an exterior plane (9) of the neck (2) and/or that the cap has a anti-tamper seal (55) with an interior plane (57) snapping in under a lip (56) at the neck (2), and in the upper parts of the cap and the neck there is cooperating sections of the radius who guarantee that the cap and the neck in their final mounting position are fixed to each other in both axial and radial direction and characterized in that the neck (2) preferably is welded to the package (7) and that the cap is designed in a way that these interior surfaces always are entirely sealing separated from areas in the neck and the cap, and by that a package closure is ob- tained which secure a sterile environment in the package.

2. The device according to claim 1 , characterized in that the sealing lip (10) in the upper part of the neck, is directed in to the center of the package (7) and that the sealing lip (10) is pressed against a exterior wall (32) of a interior ring section (24) of the cap (1) when the cap is mounted on the neck, and by that a delimitation outwards from the package, a partition wall between the interior surfaces of the package and the remaining exterior surfaces of the cap is obtained.

3. The device according to claim 1 , characterized in that the cap in its upper part has the interior ring section (24) with an extension orthogonal to a interior upper surface (28) and where the ring section has the exterior wall (32) situated on an approved distance from the cylindrical part (44) located in the upper part of the neck and where the distance is variable according to the requirements set by the present application.

4. The device according to claim 1 , characterized in that on the exterior wall (32) of the ring section (24) there is a groove (49) which by its position and shape is coordinated with a sealing nib (48) of the cooperating sealing lip (10), and where the groove (49) and the sealing nib (48) fit together when the cap is finally mounted on the neck and by that an improved tightness and attachment function between the cap (1) and the neck (2) is ob- tained.

5. The device according to claim 1 , characterized in that a plane (30) in the interior upper surface of the cap has an inclination relative the horizontal plane at preferably 15-30° and with its lowest point at the exterior edge (29) of the plane (30) and this to get a improved sealing function between the lip (10) and the exterior wall (32) of the interior ring section (24) in connection with that the cap (1) is mounted at its finally position on the neck (2) and that this improved sealing function is obtained because the upper part of the neck, with the cylindrical part (44) with an exterior part (8) will be turned when the cap firstly is pressing against the exterior corner on the part (8), wherein the sealing lip (10) of the neck will be moved inwards and up to the center of the package and then press harder against the cooperating exterior wall (32) of the cap.

6. The device according to claim 1 and 4, characterized in that the sealing function between the sealing lip (10) and the cooperating part of the cap is improved when an interior positive pressure is developed in the package, since the sealing lip at these operating cases are influenced by a force aimed to move the sealing lip upwards from the package, but this is prevented by the exterior wall (32) of the cap and, consequently, a improved surface pressure is established between the sealing lip and the exterior wall (32).

7. The device according to claim 1 , characterized in that the cap in its upper part has the plane (30) which in its exterior part changes over to an outwardly directed inner section

(35) of the radius which in its lower part changes over to an almost cylindrical section (33) extending downwards to the section provided with internal threads and where the cylindrical section (33) is diametrically coordinated with the exterior part (8) of the neck (2), to give a guide into the cap relative the neck and where the section (35) of the radius at the cap gives one in axial direction guided fixed, finally mounting position for a cooperating section (37) of the radius at the neck and its part (8) and by that the neck and the cap is locked in their upper zone, which guarantee that the parts not moves axially in relation to each other and, consequently, this implies that also the sealing lip (10) at the neck is axially locked in relation to the exterior wall (32) of the cap.

8. The device according to claim 1 , characterized in that in the intern plane (30) of the cap there is a recess (39) located on an approved distance from an interior corner (31) of the plane (30) and is, according to dimensions and position, coordinated with a heel (38) of the upper part (8) of the neck (2) and this design of the cap and the neck gives the con- struction a retention of the both cooperating parts neck and cap in radial direction, which function is important because this retention guarantee the contact pressure between the sealing lip (10) and the cooperating exterior wall (32) also in those operating cases when variations in pressure and temperature appears in the whole package.

9. The device according to claim 1 and in an embodiment where the cap (1) and the neck of the package (2) both are manufactured according to a second alternative of embodiment, characterized in that the sealing lip (10) in the upper part of the neck is directed into the center of the package (7) and is situated in a top plane of the neck (2).

10. The device according to claim 1 and 9, characterized in that the sealing lip (10) is pressed down against the package (7) when the cap (1) is mounted on the neck (2) and this owing to that the inner ring section (24) first bends away the sealing lip and is than displaced downwards and passes the outer end of the sealing lip, whereby the sealing nib (48) of the sealing lip (10) comes with force to be situated in contact with the outer wall (32) of the ring section (24).

11. The device according to claim 1 and 9, characterized in that as soon as the sealing lip (10) with its sealing nib (48) is in contact with the outer wall (32) of the inner ring section (24) of the cap (1) a fully tightness is obtained in the package, even if the cap isn't mounted in its final position.

12. The device according to claim 9, characterized in that the package (7) is recloseable, i.e. that it always gives a fully tightness, the same tightness as in the initial phase, and this due to the interior elasticity provided in the sealing lip (10) which implies that the lip cooperates with the inner ring section (24) with pressure.

13. The device according to claim 1 and in an embodiment where the cap (1) and the neck (2) preferable both are realized according to a third alternative of embodiment, characterized in that the first sealing lip (10) in the upper part of the neck is directed inwards to the center of the package (7) and placed in the upper plane (36) of the neck (2) and that there also exists the second sealing lip (51), placed on the neck and in the same upper plane (36), but where the sealing lip (51) is directed outwards from the center of the package (7) and where the sealing lip (51) is provided with a sealing tip (52) which, when the cap (1) is mounted on the neck (2), will be pressed against the cylindrical section (33) of the cap and when a negative pressure is obtained in the package (7) the sealing lip (51) will seal even more tight against the cap and the cylindrical section (33).

14. The device for a package where the cap (1) is realized according to any of the different alternative constructions of cap and neck, but where the plane (25) of the cap and the plane (9) of the neck who cooperates with the plane (25), is replaced with a anti-tamper seal (55) which in the final position of the cap snaps over the external located lip (56) on the neck (2), and when this anti-tamper seal snaps over the lip (56) the internal plane (57) of the anti-tamper seal will lock the cap (1) in axial direction relative the neck (2), since the lip (56) in this position is elastic pressed against the outer corner (58) at the inner plane (57) of the anti-tamper seal.