EP2459148B1 - Closure system for a leak proof bottle for baby food - Google Patents

Description

The invention relates to a closure system for a leak-proof bottle for baby food.

In known bottles for baby food, the teat at the bottom has a peripheral Saugerflansch which is fixed by means of a screwed onto an external thread of the bottle screw ring sealingly on the edge of a bottle opening. In order to prevent the leakage of the liquid in drinking breaks, a lid is placed between the suction flange and the edge of the bottle and clamped by means of the screw ring.

From the DE 101 57 071 C1 is a more user-friendly leak-proof bottle for baby food. This has a screwed onto the external thread of the bottle lower locking ring having a first seat with at least a first flow hole. An upper lock ring has a second seat with at least one second flow hole. The two locking rings are rotatable relative to one another via locking elements and releasably locked together. By turning the upper locking ring, the first and second flow holes can be brought into overlapping and non-overlapping positions. A teat is screwed by means of a screw ring with an external thread of the upper locking ring. If the flow holes cover each other, infant formula can be removed through the teat. If the flow holes do not cover each other, the removal of baby food by the teat is blocked.

In the embodiment, the closure rings have conical seating surfaces. Furthermore, sealing rings on the underside of the lower locking ring and on the Top of the first seat available. The lower locking ring has a locking projection projecting inwardly from the lower conical seating surface, and the upper locking ring has locking tabs projecting from the lower second tapered seating surface which engage behind the locking projection.

The production and application of the leak-proof bottle is sometimes still expensive. Due to the complex spatial shape, contaminants can accumulate on the closure rings. The snap tongues come into contact with the baby food and must be handled for disassembly. The cleaning of the locking rings is expensive.

The WO 2007/042117 A1 discloses a preparation and application facilitating leak-proof bottle for baby food. A variant comprises a closure system with a lower locking ring, which has a substantially cylindrical, first shell part with a first internal thread, which is screwed onto an external thread of a bottle, and a connected to the upper edge of the first shell part, the first central part with a a longitudinal axis rotationally symmetrical, facing away from the bottle interior, the first seat, at least one on the one hand in the first seat and on the other hand in a side facing the bottle interior side of the first middle opening, first flow hole and one to the first seat at least around the edge of the flow hole and one on the the upper edge of the bottle sealingly seated sealing surface of the first middle part molded, soft elastic sealing material made of plastic, from the first seat through the first flow hole along the side facing the bottle interior to the sealing surface of the e strsten middle part extends. Furthermore, the closure system comprises an upper closure ring having a substantially cylindrical second shell part with a second external thread, on which a teat of a threaded ring is fixed with an internal thread, and a connected to the second shell part, the second middle part with a rotationally symmetrical about the longitudinal axis, sealingly seated on the first seat second seat and at least one on the one hand in the second Seating surface and on the other hand in a side facing away from this side of the second middle part, second flow hole, which can be brought by turning the upper locking ring with respect to the lower locking ring in overlapping and non-overlapping positions with respect to the first flow hole. Furthermore, locking elements are present, which connect the lower locking ring and the upper locking ring relative to each other rotatably and detachably.

According to the embodiment, the soft elastic sealing material is molded onto the lower locking ring and covers a circular portion surrounding the flow holes on the first seating surface. Further, it has on the inner circumference of the flow holes each have a strip-shaped portion. On the underside of the first central part of the strip-shaped sections outgoing, further strip-shaped portions of the soft elastic sealing material are present, run down the inside of a cylindrical portion of the first shell part and are connected at the bottom with an annular circumferential sealing surface made of the same material, on the inside of a Stage of the first shell part is arranged. The sealing material is e.g. a thermoplastic elastomer.

In the known closure system, the seal between the lower locking ring and the upper locking ring between the circular disc-shaped soft elastic sealing material of the first seat of the lower locking ring and seated thereon, substantially flat second seat of the upper locking ring. This can lead to leaks especially if the seat is not exactly against each other with a certain contact pressure. Further, the friction between the first seat of soft elastic sealing material and the second seat surface may hinder the rotation of the upper locking ring with respect to the lower locking ring.

Based on this, the object of the invention is to provide a closure system for a leak-proof bottle for baby food with better application properties.

The object is achieved by a closure system with the features of claim 1. Advantageous embodiments of the closure system are specified in subclaims.

• einen unteren Verschlussring, der ein im Wesentlichen zylindrisches unteres Mantelteil mit einem Innengewinde hat, das auf ein Außengewinde einer Flasche aufschraubbar ist, eine oberhalb des Innengewindes randseitig mit dem unteren Mantelteil verbundene und seinen Querschnitt versperrende untere Trennwand mit einer ersten Oberseite und einer ersten Unterseite und mindestens einem einerseits in der ersten Oberseite und andererseits in der ersten Unterseite mündenden, unteren Durchflussloch aufweist,
• einen oberen Verschlussring, der ein im Wesentlichen zylindrisches oberes Mantelteil mit einem Außengewinde zum Verbinden mit einem Schraubring zum Befestigen eines Trinksaugers am oberen Mantelteil und eine randseitig mit dem oberen Mantelteil verbundene und seinen Querschnitt versperrende obere Trennwand mit einer zweiten Oberseite und einer auf der ersten Oberseite abdichtend sitzenden zweiten Unterseite und mindestens einem einerseits in der zweiten Unterseite und andererseits in der zweiten Oberseite mündenden oberen Durchflussloch aufweist,
• Verriegelungselemente, die den unteren Verschlussring und den oberen Verschlussring relativ zueinander drehbar und lösbar miteinander verriegeln,
• wobei mindestens ein Dichtkissen in Tortenstückform aus einem weichelastischen Material auf der ersten Oberseite der unteren Trennwand und mindestens ein oberes Durchgangsloch mit einem zur Tortenstückform komplementären randseitigen Dichtsitz in der zweiten Unterseite der oberen Trennwand angeordnet ist oder umgekehrt und wahlweise das obere Durchflussloch durch Drehen des oberen Verschlussringes bezüglich des unteren Verschlussringes in überdeckende Stellung bezüglich des unteren Durchgangsloches und der Dichtsitz in abdichtende Stellung bezüglich des Dichtkissens bringbar ist.

The closure system for a leak-proof bottle for baby food according to the invention according to claim 1 has

• a lower closure ring having a substantially cylindrical lower shell portion with an internal thread which is screwed onto an external thread of a bottle, a above the internal thread at the edge connected to the lower shell portion and its cross-section obstructing lower partition with a first top and a first bottom and has at least one, on the one hand in the first top and on the other hand in the first bottom opening, lower flow hole,
• an upper closure ring having a substantially cylindrical upper shell portion with an external thread for connection to a threaded ring for securing a teat to the upper shell portion and an upper partition wall connected to the upper shell part and blocking its cross section with a second upper side and a second lower side sealingly seated on the first upper side and at least one upper throughflow opening in the second lower side and on the other side in the second upper side
• Locking elements that rotatably and releasably lock the lower locking ring and the upper locking ring relative to each other,
• wherein at least one sealing pad in cake pie of a soft elastic material on the first upper side of the lower partition wall and at least one upper through hole with a cake piece shape complementary peripheral sealing seat in the second underside of the upper partition wall is arranged or vice versa and optionally the upper flow hole by turning the upper closure ring with respect to the lower locking ring in overlapping position with respect to the lower through hole and the sealing seat in sealing position with respect to the sealing pad can be brought.

The closure system according to the invention can be screwed onto an outlet-protected bottle for infant food with the internal thread of the lower closure ring. Furthermore, a teat by means of a screw ring can be screwed onto the external thread of the upper locking ring. In this case, the lower closure ring sealingly seated on the upper edge of the bottle and the teat sealingly seated on the upper edge of the upper shell portion of the upper locking ring.

The locking rings are rotatable and releasably connected to each other via the locking elements relative to each other. The locking rings have a lower and at least one upper flow hole, which can be brought by turning the upper locking ring to the lower locking ring in overlapping and non-overlapping positions. If the at least one lower and the at least one upper flow hole overlap, children's food can be removed. If they do not cover up, the closure system locks the removal of liquid baby food. The lower locking ring and the upper locking ring lie flat against each other with the first upper side and the second lower side, so that infant food can not in principle flow out laterally between the two locking rings.

When the upper lock ring is rotated with respect to the lower lock ring so as to be sealed to the one seal seat with respect to the at least one seal pad, the passage of liquid infant food through the at least one lower through hole and the at least one upper through hole is prevented. At the same time it is prevented that liquid infant food exits laterally through the contact area between the first top of the lower partition and the second bottom of the upper partition. The at least one sealing pad is disposed either on the first upper side of the lower partition wall and the at least one sealing seat on the second lower side of the upper partition wall, or the at least one sealing cushion is on the second lower side of the upper partition wall and the at least one sealing seat on the first upper side of the lower partition Partition arranged. Further, the invention includes possible embodiments in which the lower partition wall at least one pie-shaped sealing pad and at least one pie-shaped sealing seat and the upper partition wall at least one complementary thereto sealing bag and at least have a complementary to the at least one pie-shaped sealing cushion of the lower partition sealing seat.

The pie slice shape of the sealing pad and the complementary sealing seat favor a particularly advantageous for the removal of liquid infant formula shape of the through holes and a particularly tight seal these through holes. According to a preferred embodiment, the sealing seat is an edge surrounding the at least one upper through-hole, against which the sealing cushion abuts sealingly on the edge when the sealing seat is brought into sealing position with respect to the sealing pad. The edge can be made with particularly dimensionally stable or smooth surface. It is preferably a marginal bevel or chamfer of the through hole into which the sealing pad is pressed, wherein it bears with its edge sealingly against the bevel or chamfer.

According to one embodiment of the invention, the closure system has the following further features: on the first upper side, an annular lip seal concentric with the lower shell part is made of a soft elastic material with at least one axially directed sealing lip and on the second underside at least one engaging with the lip seal, arranged to the upper shell part concentric annular sealing geometry or vice versa and the upper flow hole can be brought by turning the upper locking ring with respect to the lower locking ring in overlapping and non-overlapping positions with respect to the lower flow hole.

As an additional lateral seal of the contact area between the first upper side and the second lower side, there is at least one annular lip seal and at least one annular sealing geometry engaged therewith. In this case, either the lower locking ring at least an annular lip seal and the upper locking ring on the at least one annular sealing geometry or the lower locking ring has the at least one annular sealing geometry and the upper locking ring, the at least one annular lip seal. It is also possible that both the upper closure ring and the lower closure ring have at least one annular lip seal and at least annular sealing geometry. The at least one annular lip seal and the at least one annular sealing geometry are arranged to surround the lower and upper flow holes. They are arranged concentrically to the lower shell part and the upper shell part, so that they do not hinder the rotation of the upper locking ring relative to the lower locking ring. Due to the at least one annular lip seal and the at least one annular sealing geometry, the seal between the lower and upper closure rings is improved and a lateral escape of liquid infant food is prevented even more effectively. It is particularly advantageous that the axially directed sealing lip and a corresponding sealing geometry mesh in the axial direction of the cylindrical shell parts, so that the lower locking ring and the upper locking ring are easily assembled and separated from each other.

In this closure system, even if the lower and upper through holes overlap each other, the lateral drainage of liquid food between the upper and lower closure parts is securely prevented.

According to a preferred embodiment, which further improves the edge-side seal, the lip seal is a double lip seal.

According to another embodiment, which improves the removal of liquid food and the sealing of the closure rings, have the lower closure ring and the upper closure ring in each case two diametrically opposed flow holes and / or the lower closure ring two diametrically opposed sealing pads in pie slice shape and the upper closure ring two diametrically opposed flow holes with randseitigem sealing seat or vice versa.

The locking elements can be designed in various ways. According to a preferred embodiment, they are parts of a bayonet closure. A bayonet lock allows easy connection of locking ring and upper locking ring with each other and the user also easy separation of the lower and upper locking ring.

According to a further embodiment, the lower locking ring above the internal thread has an annular sealing element of a soft elastic material for sealing at the upper edge of a bottle. As a result, the sealing seat of the closure system is supported on the bottle. In principle, it is also possible to insert a separate sealing ring between the closure system and the bottle.

According to a preferred embodiment, the sealing element is annular disk-shaped.

According to a further embodiment, the lip seal and the sealing element consists of a soft elastic material which extends from the lip seal over the first upper side of the lower partition wall through the lower through holes to the sealing element. The sealing elements can then be integrally molded onto the lower locking ring. This is manufacturing technology advantageous.

According to one embodiment of the lip seal and / or the sealing pad and / or the sealing element having lower and / or upper closure ring in the two-component injection molding of a soft elastic plastic component for the lip seal and / or the sealing pad and / or the sealing element and the rest of made of a hard elastic plastic component. The two-component injection molding process may, in particular, be a core retraction process or a conversion process.

According to a further embodiment, the lip seal and / or the sealing pad and / or the sealing element made of thermoplastic elastomer. The production of thermoplastic elastomer favors in particular the cohesive connection between the lip seal and / or sealing bag and / or sealing element with the other parts of the lower and / or upper locking ring. In principle, it is also possible to connect the lip seal and / or the sealing pad and / or the sealing element positively and / or non-positively with the other parts of the lower and / or locking ring. This applies both to embodiments of these seals made of thermoplastic elastomer as well as for possible embodiments of these seals of another sealing material, such as rubber or silicone.

According to a preferred embodiment, the first upper side is flat and the second lower side is flat. Furthermore, the first lower side and the second upper side are also preferably flat.

According to a further embodiment, the lower closure ring is screwed onto a bottle for infant food.

According to a further embodiment, the upper locking ring is held by a screw ring a teat.

Fig. 1

ein Verschlusssystem aufgeschraubt auf eine Flasche für Kindernahrung mit einem aufgeschraubten Trinksauger in einem Vertikalschnitt;

Fig. 2a bis e

dasselbe Verschlusssystem in Seitenansicht (Fig. 2a), in einer Ansicht von der linken Seite (Fig. 2b), in einer Ansicht von der rechten Seite (Fig. 2c), in Unteransicht (Fig. 2d) und in der Draufsicht (Fig. 2e);

Fig. 3a bis g

unterer Verschlussring desselben Verschlusssystems in Vorderansicht (Fig. 3a), in einer Ansicht von der rechten Seite (Fig. 3b), in Draufsicht (Fig. 3c), in Unteransicht (Fig. 3d), in einem Schnitt entlang der Linie A-A von Fig. 3b (Fig. 3e), in einem Schnitt entlang der Linie B-B von Fig. 3a (Fig. 3f), und in einer Perspektivansicht schräg von oben und von der Seite (Fig. 3g);

Fig. 4a bis f

der obere Verschlussring desselben Verschlusssystems in Vorderansicht (Fig. 4a), in einer Ansicht von der rechten Seite (Fig. 4b), in Draufsicht (Fig. 4c), in Unteransicht (Fig. 4d), in einem Schnitt entlang der Linie B-B von Fig. 4a (Fig. 4e), in einem Schnitt entlang der Linie C-C von Fig. 4a (Fig. 4f) und in einer Perspektivansicht schräg von oben und von der Seite (Fig. 4g).

The invention will be explained in more detail with reference to the accompanying drawings of an embodiment. In the drawings show:

Fig. 1

a closure system screwed onto a bottle for baby food with a screwed-on teat in a vertical section;

Fig. 2a to e

same closure system in side view ( Fig. 2a ), in a view from the left side ( Fig. 2b ), in a view from the right side ( Fig. 2c ), in bottom view ( Fig. 2d ) and in plan view ( Fig. 2e );

Fig. 3a to g

lower closure ring of the same closure system in front view ( Fig. 3a ), in a view from the right side ( Fig. 3b ), in plan view ( Fig. 3c ), in bottom view ( Fig. 3d ), in a section along the line AA of Fig. 3b (Fig. 3e ), in a section along the line BB of Fig. 3a (Fig. 3f ), and in a perspective view obliquely from above and from the side ( Fig. 3g );

Fig. 4a to f

the upper locking ring of the same locking system in front view ( Fig. 4a ), in a view from the right side ( Fig. 4b ), in plan view ( Fig. 4c ), in bottom view ( Fig. 4d ), in a section along the line BB of Fig. 4a (Fig. 4e ), in a section along the line CC of Fig. 4a (Fig. 4f ) and in a perspective view obliquely from above and from the side ( Fig. 4g ).

In the present application, the terms "top" and "bottom" refer to the orientation of the closure system when it is screwed onto a bottle and screwed with a teat, the bottle is vertically aligned and is placed with the ground on a substrate and the teat is located above the bottle.

According to Fig. 1 For example, a closure system 20 with a lower closure ring 30 and an upper closure ring 60 is screwed onto a bottle 10 for infant food and a drinking teat 100 is screwed onto the closure system 20 by means of a screw ring 90.

The bottle 10 has a cylindrical, waisted bottle body 11 having a bottom 12 at the bottom and a neck 13 at the top. The neck 13 is designed as a wide neck, but has a smaller diameter than the underlying portion of the bottle body 11. The neck 13 has a catchy bottle external thread 14 and has a top bottle opening 15. The bottle opening 15 is surrounded by an upper edge of the bottle 16. The bottle 10 has a longitudinal central axis 17.
As in particular from the Fig. 2 and 3 As can be seen, the lower locking ring 30 has a substantially cylindrical, lower shell portion 31 having a plurality of sections. The first lower shell portion 32 having a substantially cylindrical shape has an inner thread 33 on the inner circumference, which is shown in FIG Fig. 1 is screwed onto the bottle external thread 14. From the periphery of the first lower shell portion portion 32 is radially outwardly and downwardly before a second lower shell portion portion 34 which covers the bottle neck 13 laterally.

Further, the lower shell portion 31 has a radially inwardly projecting from the upper edge of the first lower shell portion portion 22 third lower shell portion portion 35, which is substantially annular disc-shaped. From the interior of the third lower shell portion portion 35 is axially upwardly a substantially cylindrical, fourth lower shell portion portion 36 before.

With the upper edge of the fourth upper shell portion section 36, a lower partition wall 37 is connected, which blocks the cross section of the lower locking ring 30 substantially.

This circular disc-shaped partition wall 37 has a substantially planar first upper surface 38 and a substantially planar first lower surface 39. Further, it has diametrically opposed pie-shaped lower flow-through holes 40, 41 extending from the first upper surface 38 to the first lower surface 39.

The first top 38 is enclosed by an annular double lip seal 42, the sealing lips 43, 44 extend perpendicular to the first top 38 upwards. The double lip seal can also be referred to as a "double lamellar seal". Further, on the first upper side 38, two diametrically opposed pie-shaped sealing pads 45, 46 are arranged, which are arranged on the bisecting line between the two pie-shaped lower flow holes 40, 41.

The pie-shaped flow holes 40, 41 and the pie-shaped sealing pads 45, 46 widen with increasing distance from the center of the circular disc-shaped partition wall 37th

Furthermore, the closure ring on the underside of the second lower shell portion section has an annular disk-shaped sealing element 47.

Further, the lower locking ring 30 has on the outer periphery of the first lower shell portion 32, two opposing longitudinal grooves 48, 49 which are each connected to an annular groove 50, 51 which is bounded below by the second lower shell portion 34. In addition to each longitudinal groove 48, 49 is in the respective adjacent annular groove 50, 51 each have a latching projection 52, 53 available. The latching projections 52, 53 have in each case a chamfer to the longitudinal sides 48, 49 and / or the annular grooves 50, 51. The annular grooves 50, 51 are respectively bounded at the opposite ends by stops 54, 55, which at the same time separate the annular grooves 50, 51 from the adjacent longitudinal grooves 48, 49.

At the second lower shell portion are at diametrically opposed peripheral regions outside two semicircular lower elevation 56, 57 with the imprint "press open" By pressing against the semicircular lower elevation 56, 57, it is possible the locking projections arranged next to 52, 53 slightly behind relocate within.

The lower closure ring 30 is basically made of a hard elastic plastic, e.g. made of polypropylene (PP). At the lower locking ring 30, a soft elastic sealing material is molded, which form the double lip seal 42, the sealing pad 45, 46 and the sealing element 47. The sealing material is molded so that it connects all the aforementioned seals 42, 45, 46, 47 with each other. It is e.g. a thermoplastic elastomer (TPE).

According to Fig. 2 and 4 For example, the upper locking ring 60 has an upper shell portion 61 having a plurality of sections. The substantially cylindrical first upper shell portion 62 has an external thread 63 on the outer periphery. The first upper shell portion 62 is at the lower edge with a radially outwardly projecting, second upper shell portion 64 is connected. The second upper shell portion 64 is in turn connected at the outer periphery with an axially downwardly projecting third upper shell portion 65. The third upper shell portion 65 has on the inner circumference two projecting claws 66, 67 which are diametrically opposed to each other. Outside, the third upper shell portion 65 has two radially outwardly projecting, semi-circular upper elevations 68, 69, which are also diametrically opposed to each other. The upper elevations 68, 69 are offset by 90 ° to the claws 66, 67.

Furthermore, the upper closure ring 60 has a circular disk-shaped upper partition wall 70, which is slightly below the upper edge of the first upper shell portion portion 62 connected thereto and the cross section of the upper shell portion 61 blocks. The upper divider 70 has a substantially planar second top 71 and a substantially planar second bottom 72. Further, it has diametrically opposed, pie-shaped upper through holes 73, 74 opening into the second top 71 and the second bottom 72, respectively , The upper through holes 73, 74 are diametrically opposed to each other. On the second underside 72, the upper partition wall 70 has an annular sealing geometry 75 complementary to the double lip seal. This sealing geometry 75 has two annular sealing grooves 76, 77 into which the sealing lips 43, 44 of the double lip seal 42 can engage. The sealing geometry 75 is arranged concentrically to the first upper shell part 61 and to the circular disk-shaped upper partition wall 70.

The upper locking ring is made of PP, for example.

The upper locking ring 60 is inserted with the claws 66, 67 in the longitudinal grooves 48, 49 of the lower locking ring 30 until the claws 66, 67 against the second lower shell portion 34 abut. In this case, the double lip seal 42 engages in the sealing grooves 76, 77 of the sealing geometry 75. By turning the upper locking ring 60 by about 15 °, the jaws 66, 67 of the upper locking ring 60, the locking projections 52, 53 of the lower locking ring 30, so that the lower and upper locking ring 30, 60 are captively connected to each other. When the pawls 66, 67 have just passed over the latching projections 52, 53, the lower and upper through-holes 40, 41 and 73, 74 are in a mutually overlapping position in which liquid can pass through the closure system 20. This position is in Fig. 1 shown.

By further rotating the upper locking ring 60 with respect to the lower locking ring 30 until the claws 66, 67 abut against the stops 55, 56, the upper flow holes 73, 74 are sealed by the sealing pads 45, 46 of the lower locking ring 30. In this case, the sealing cushions 45, 46 abut sealingly on edge-side chamfers or chamfers of the flow-through holes 73, 74, which form sealing seats. The closure system 20 is then closed and liquid can not pass through the through-holes 40, 41, 73, 74. At the moment of closing, the closure system 20 still emits an acoustic clicking sound.

The locking system 20 is opened again by turning the upper locking ring 60 in the opposite direction to the position in which the claws abut the locking projections 55, 56. This stop position can only be skipped if the lower locking ring is deformed by compressing the two semicircular lower elevations 56, 57. The lower locking ring 30 can only be deformed when the closure system 20 has been screwed down from the bottle 10. The upper ridges 68, 69 on the upper locking ring 60 facilitate the rotation of the upper locking ring 60 with respect Furthermore, they can indicate special positions, for example the positioning in which the claws 66, 67 engage in the longitudinal grooves 48, 49 with a suitable arrangement.

According to Fig. 1 the screw ring 90 has a circular cylindrical ring portion 91 with a threaded ring internal thread 92 on the inner circumference and a radially inwardly projecting from the upper edge annular flange 93 with a threaded ring groove 94 on the underside. The threaded ring 90 is screwed to the external thread 63. The annular flange 93 is pressed against the upper edge of the second locking ring.

The screw ring may have on the outer circumference a coating 95 made of a soft elastic plastic. For example, it is injection molded from PP and the soft elastic material is, for example, injection-molded TPE.

According to Fig. 1 the teat 100 has a mouthpiece 101 with a slit valve 102 and a nipple 103 with a drinking hole 104 and / or drinking slot at the end and a spout 105 carrying the mouthpiece 101. At the bottom of the spout 105 it has an outwardly directed suction flange 106 with a upwardly projecting sealing bead 107. The teat 100 is made for example of rubber or latex or silicone rubber.

According to Fig. 1 the teat 100 is clamped on Saugerflansch 106 between the upper edge of the upper locking ring 60 and screw ring 90. The sealing bead 107 is fixed in the threaded annular groove 94 on the underside of the annular flange 93.

The screw ring 20 can be screwed onto the closure system or screwed down therefrom in the closed or in the opened state of the closure system 20.

The new closure system 90 can be brought by rotation from the closed state to the open state and vice versa. There are no items to be removed to bring the closure system 20 in the functional state. There is also no direct contact of the user and the food when opening and closing the closure system 20. The risk of contamination of food is thus greatly reduced. In addition, no items can be lost. The closure system 20 may be used for bottles 10 and other containers.

Claims (12)

1. Closure system for a leakproof baby feeding bottle comprising

   - a lower closure ring (30) which has a substantially cylindrical lower peripheral part (31) with an internal thread (33), which may be screwed onto an external thread (14) of a bottle (10) and comprises a lower partition (37) connected to the lower peripheral part (31) on the edge above the internal thread (33) and blocking its cross section, with a first upper face (38) and a first lower face (39) and at least one lower throughflow hole (40, 41) which opens, on the one hand, in the first upper face (38) and, on the other hand, in the first lower face (39),

   - an upper closure ring (60) which comprises a substantially cylindrical upper peripheral part (61) with an external thread (63) for connecting to a screw ring (90) for fastening a drinking teat (100) to the upper edge of the upper peripheral part (61) and an upper partition (70) connected to the upper peripheral part (61) on the edge and blocking its cross section with a second upper face (71) and a second lower face located sealingly on the first upper face (38) and at least one upper throughflow hole (73, 74) which opens, on the one hand, in the second lower face (72) and, on the other hand, in the second upper face (71),

   - locking elements (48, 49, 50, 51, 66, 67) which rotatably and releasably lock together the lower closure ring (30) and the upper closure ring (60) relative to one another,

   - characterized in that at least one cake slice-shaped sealing cushion (45, 46) made of a soft elastic material being arranged on the first upper face (38) of the lower partition (37) and at least one upper throughflow hole (73, 74) with a sealing seat on the edge complementary to the cake-slice shape being arranged in the second lower face (72) of the upper partition (70) or vice versa and optionally the upper throughflow hole (73, 74) being able to be brought by rotating the upper closure ring (60) relative to the lower closure ring (30) into an overlapping position relative to the lower throughflow hole (40, 41) and the sealing seat into the sealed position relative to the sealing cushion (45, 46).
2. Closure system according to claim 1, wherein a circular lip seal (42) made of a soft elastic material concentric to the lower peripheral part (31), with at least one axially oriented sealing lip (43, 44) being arranged on the first upper face (38) and at least one circular seal geometry (75) engaging with the lip seal (42) and concentric to the upper peripheral part (61) being arranged on the second lower face (72) or vice versa and by rotating the upper closure ring (60) relative to the lower closure ring (30) the upper throughflow hole (73, 74) may optionally be brought into overlapping and non-overlapping positions relative to the lower throughflow hole (40, 41).
3. Closure system according to Claim 2, in which the lip seal (42) is a double lip seal.
4. Closure system according to one of Claims 1 to 3, in which the lower closure ring (30) and the upper closure ring (60) in each case comprise two diametrically opposing throughflow holes (40, 41, 73, 74) and/or the lower closure ring (30) comprises two diametrically opposing cake slice-shaped sealing cushions (45, 46) and the upper closure ring comprises two diametrically opposing throughflow holes (73, 74) with a sealing seat on the edge or vice versa.
5. Closure system according to one of Claims 1 to 4, in which the locking elements (48, 49, 50, 51, 66, 67) are parts of a bayonet closure.
6. Closure system according to one of Claims 1 to 5, in which the lower closure ring (30) above the internal thread (33) comprises a circular peripheral sealing element (47) made of a soft elastic material for sealing to the upper edge of a bottle (10).
7. Closure system according to Claim 6, in which the sealing element (47) is circular disc-shaped.
8. Closure system according to Claim 6 or 7, in which the lip seal (42) and the sealing element (47) and/or the sealing cushion (45, 46) consist of a soft elastic material which extends from the lip seal (42) over the first upper face (38) of the lower partition (37) through the lower through-holes (40, 41) as far as the sealing element (47) and/or as far as the sealing cushion (45, 46).
9. Closure system according to one of Claims 1 to 8, in which the lower and/or upper closure ring (20, 60) comprising the lip seal (42) and/or the sealing cushion (45, 46) and/or the sealing element (47) is produced in a two-component injection moulding method from a soft elastic plastics component for the lip seal (42) and/or the sealing cushion (45, 46) and/or the sealing element (47) and also from a hard elastic plastics component.
10. Closure system according to one of Claims 1 to 9, in which the lip seal (42) and/or the sealing cushion (45, 46) and/or the sealing element (47) consist of thermoplastic elastomer.
11. Closure system according to one of Claims 1 to 10 with the lower closure ring (30) screwed onto a baby feeding bottle.
12. Closure system according to one of Claims 1 to 10 with a drinking teat (100) held by means of a screw ring (30) on the upper closure ring (60).

Images