MX2007002498A

MX2007002498A - Sealing means for a closure, closure and process.

Info

Publication number: MX2007002498A
Application number: MX2007002498A
Authority: MX
Inventors: Rodney Druitt
Original assignee: Creanova Universal Closures
Priority date: 2004-09-01
Filing date: 2005-08-02
Publication date: 2007-10-10
Also published as: ATE405498T1; JP2008511505A; KR20070061852A; ES2313457T3; EP1789336B1; EP1789336A1; CA2580467C; DK1789336T3; PL1789336T3; EA200700511A1; PT1789336E; DE602005009213D1; EP1985549A1; AU2005331483A1; AU2005331483B2; WO2006117024A1; BRPI0514822B1; KR101233851B1; BRPI0514822A; JP4949250B2

Abstract

The present invention is directed to a sealing means (2) for sealing of a neck (25) of a container, especially a container for carbonated beverages. The sealing means comprises a radially deformable outer sealing means (20) suitable to be engaged with an outer free surface (17) of a neck (25) of the container. The outer sealing means (20) comprises an annular base (22) which blends by a blend (34) into a vertical top surface (35) and at least one annular sealing ring (23) arranged at a free end of the annular base (22), protruding radially inwardly above the inner surface of the base (22) and forming in engaged position with the neck (25) a first contact area (30) with the outer free surface (17).

Description

MEANS OF SEALING FOR A CLOSURE, CLOSURE AND PROCESS Field of the Invention The present invention relates to a sealing means for closures, especially sealing means for closures for containers for liquids such as beverages. In particular, the invention relates to a sealing means for containers for carbonated liquids such as soft drinks but is well suited for closing other containers such as glass or PET containers with contents above or below atmospheric pressure or having components gaseous or requiring an airtight seal. The invention further relates to a closure and to a process for making and applying a sealing means, respectively a closure.

BACKGROUND OF THE INVENTION Seals of closures are generally made of various types of plastic, such as Polyethylene (hereinafter PE) or Polypropylene (hereinafter PP) or EVA-based materials such as lining material.

Darex ™. The latter is used mainly for the manufacture of lining closures; The material is less hard and less durable than PE. A softer material such as low density PE (LDPE), ethylene-vinyl acetate (EVA) or Compounds based on polyolefin raw materials are frequently used as sealing material. More rigid materials such as Polypropylene are often used as a fastener layer material. From the prior art, a large number of documents relating to closures and covers for sealing containers are available. A selected variety is explained below. EP0076778 by Albert Obrist AG was introduced in 1982 and relates to a closure cap made of plastic material having a circular outer sealing lip having a thickness that decreases continuously versus its free end. The outer sealing lip is arranged in the region of the junction between an outer vertical edge and a disc-like upper portion and points obliquely inwardly. At its smallest diameter, the sealing lip has a rounded sealing portion. Below the sealing portion, the sealing lip widens outwardly in the manner of a funnel to receive a container opening. However, due to the forced arrangement of the sealing lip, the sealing lip frequently tends to be distorted during application, especially the twisted application in the neck of a container. An additional disadvantage is that due to the inclined arrangement, this seal is relatively rigid and therefore Not very good when adjusting in the lateral direction. US4489845 was filed in 1984 and was assigned to Albert Obrist AG. US 4489845 relates to a screw cap for closing a container opening. The lid has a sealing lip that attaches to the top of the lid. The inner side wall of the outer sealing lip has a diameter that is greater than the outer diameter of the outer wall of the container. A clamping device, which can be designed as an inner seal, creates a contraction of the upper part of the lid when the threaded cap is threaded into the container due to deformation of the outer layer of the closure, whereby the Sealing lip should be pressed against the mouth of the container. In this way, the sealing lip is pressed only radially against the mouth of the container during the course of the threading process. In this way, excessive elongation and damage to the sealing lip material must be prevented. In a coupled position, the sealing lip engages around the upper outer edge of the neck of a container opening. A disadvantage is that the described deformation of the closure is related to broad operating forces. A further disadvantage is that the outer layer tends to break due to extensive stress and deformation (stress cracking) which results in complete failure of the closing and loss of the product. EP0114127, filed in 1984, by Continental Whitecap and EP0176205, filed in 1985, by Sun Cost Plástic both describe a seal having two sealing tabs arranged in a general form of V. When the closure is pulled downwards in a container, the tabs will be deformed according to the cross section of the sealing surface area of the container including downwardly inside the mouth of the container and downward along the side of the outer surface of the neck finish to produce a contact of the container. effective sealing with the sealing area of the container. The sealing tabs are in the engaged position supported laterally and pressed against the neck of the container. EP0529383, presented in 1992 by Jacob Berg GmbH, relates to a plastic screw cap for containers, in particular pressurized beverage containers. The closure comprises an annular sealing strip that is integrally molded with the outer layer of the closure. Adjacent to the sealing strip, an edge is arranged which presses the sealing strip against an upper outer edge of the neck of a container. The disadvantage consists in the reduced lateral adjustability. EP0770559, presented in 1996 by Sacmi Cooperativa Meccanici, refers to a screw cap of plastic with a liner made by compression molding. The closure comprises an annular lip that is designed to support a liner and protrudes from the disc-like portion concentrically with respect to the cylindrical outer wall. The annular lip is acting as a shoulder for a sealing liner, so that the liner, when the lid has been applied to the container, engages the edge of the mouth of the container. US4489844 was filed in 1982 'and assigned to Charles A. Breskin Assoc. Ine, refers to a reusable lid for closing containers of carbonated drinks or the like. The closure consists of an integrally threaded layer having an attachment thereon which sealingly couples the neck of the beverage container to the free edge thereof. The outer layer and the accessory are constructed of different plastic materials and are injection molded into different portions of the same molding cavity. First, the fitting is formed and then, without moving the attachment from the position in which it was formed, the outer layer is formed, to produce a unitary structure in which substantial portions of the fitting are embedded in the outer layer. US5447674 filed in 1993 by Frank Schellenbach refers to a method and mold core for the production of a molded plastic closure by injection of two components. A mold core for use in a two-component injection molding method is presented for the injection molding of two components of plastic container closures. The mold core consists of a first and a second sub-core. After injecting the first substantial, a sub-core or tool element is displaced by a predetermined amount relative to the first molding. A disadvantage of the described method is that the displacement of the core can only take place when the material of the first stage has been sufficiently frozen which results in a significant delay. A further disadvantage is that the geometry of the seal and the seal is significantly restricted due to the function of the mold. A still further disadvantage is that the seal can not comprise a radial projection which would result in a skewed cut of the mold because the displacement of the mold core would no longer be possible. WO03011699 filed in 2002 by Bericap relates to a closure cap comprising an internal sealing edge which is substantially truncated and converges from the base of the sealing edge towards the free end of the sealing edge. The inside of the sealing edge is designed to cooperate with the outside of the neck. The inner diameter of the sealing edge towards its portion Free end is designed smaller than the outer diameter of the neck. As described, the closure may comprise an annular notch designed to improve the attachment of a liner to the edge of the neck or contact between the liner and the edge. From the inventor of the invention described herein, a series of closures for carbonated beverage containers are known and are described among others in WO99 / 03746 (1998), WO99 / 03747 (1999), W089 / 12584 (1989), WO03 / 022701, WO00 / 56616, WO / 56615. The seals of these closures are all those that have in common that an annular sealing rib, which initially projects downwards and inwards with respect to the upper portion of the closure, is turned upside down during application in a neck of a container . One problem with known closures of the prior art is that the seal of these closures frequently fails at high internal pressure and the contents leak due to the formation of a dome or peel off of the upper portion of the lid. Especially with caps that seal primarily on the inner peripheral surface or on the annular upper surface of the neck of the container, this problem occurs. A further problem that frequently occurs with known closures of the prior art is leakage of the seal due to a high internal pressure of the container and additional top loading applied to the top of the closure, for example, due to the stacking of several containers. The reason for this can be found in the deformation of the seal and the displacement related to this seal. A further problem with the known closures of the prior art is that the seal fails due to the twisted application of the closure on a neck of a container. It is an object of the present invention to provide a sealing means for closures, especially closures for containers for carbonated drinks and other hot or cold liquids, having an improved capacity to adapt to container necks, especially container necks having a certain imperfection or damage. It is an object of the present invention to provide a sealing and sealing device suitable for carbonated beverages and other hot or cold liquids, to offer advantages in production such as low cycle time and less material consumption and still be pressurized at high pressure internal pressures and top load.

BRIEF DESCRIPTION OF THE INVENTION The closure that has a sealing device according to the present invention is suitable to be coupled with containers that have a standard neck of a container. The standardized collar comprises an outer peripheral surface with an external thread. The outer peripheral surface is mixed by an edge surface on an annular top surface that forms the upper end of the container when it is upright. Between the annular top surface and the external thread, an outer free surface extends over a length of about 1 mm to 3 mm from the neck that is not covered by the thread and is suitable for sealing purposes. Additionally, the neck of the container comprises a cylindrical inner peripheral surface adjacent the annular top surface. In addition to a sealing means according to the present invention, the closure generally comprises a base with a disc-like upper part and an outer edge adjacent thereto with a retaining means, such as an internal thread, suitable to be coupled with a corresponding retaining means such as an external thread of the standardized neck of a container as described above. If appropriate, the closure may have a hinged lid that is interconnected to the base of the closure and is suitable for sealing a hole in a sealed manner. Preferably, the plastic material of the Closure is high density polyethylene, low density polyethylene, polypropylene or a combination thereof. Where the container is to be used for gaseous liquids, the plastic material preferably has a very low porosity to the gas. The sealing means described herein comprises in a first embodiment a substantially P-shaped cross-section. The sealing means comprises a cylindrical edge extending generally perpendicular from the disc-like upper part of the closure within the closure radially. distanced to the outer edge of the closure by a separation having a defined width and depth. The inner edge, which has in general with respect to its cross section the shape of a downward, adjustable, lateral, self-supporting leg, is preferably preferably interconnected directly to the upper portion of the closure. In the area of its opposite lower free end, the inner edge is turned in at least one toroidal sealing ring projecting above the lateral surface of the cylindrical edge. The toroidal sealing ring interacts in closed position radially from the outside with the free outer surface of the neck of the container by a designated contact surface, whereby this contact surface is preferably arranged all the way down on the free surface of the neck of the bottle as possible to reduce the influence of known problems, for example, dome formation, damage to the finish of the bottle on the upper outer edge, lifting of the closure, which may arise. The cylindrical edge acts as a base for the toroidal sealing ring and has a length that avoids the negative interaction of the toroidal sealing ring with the neck thread of the container. The at least one toroidal sealing ring is preferably formed such that it seals mainly due to ring tension. Therefore, the sealing means is preferably self-supporting even in the radially deformed position when applied to the neck of a container. In a preferred embodiment, the separation between the inner and outer edge is designed such that there is no contact between the medium sealing and the outer edge in no time. The toroidal sealing ring comprises a projection which is arranged in a position coupled to the neck of the container and defines a contact zone. In contrast to known seals of the prior art which are mainly subjected to annular pressure or bending forces at the root, the sealing means generally perpendicularly freestanding according to the present invention seals mainly due to tension forces rings that occur in the toroidal sealing ring when applied to the neck of a container. The sealing means is designed such that it is capable of adjusting / compensating a certain amount of lateral and / or radial imbalance or distortion of the neck of the container. The cylindrical edge, which acts as the base, provides a certain flexibility in the lateral / radial direction. Good results are achieved since the proportion ratio, vertical length to radial thickness of the base of the sealing means, which is arranged between the upper portion of the closure and the toroidal sealing ring, is at least 1: 1, preferably 4: 1 Depending on the field of application, additional aspects such as the radial thickness and the shape of the base of the sealing means and the radial thickness of the annular sealing ring and the aspect ratio of the vertical length to the radial thickness of the sealing ring are relevant. annular and the separation between the inner and outer edge. In a further embodiment, the seal has a generally R-shaped cross section, whereby the P-shaped cross-section is mixed on the inside on an inner top surface of the closure. This mixture is formed such that it forms a second sealing region with the edge surface of the container neck that causes, when the edge surface presses on the mixture, the annular sealing ring pulls, due to deformation controlled from the base, inwards on the outside free surface of the container neck. Depending on the field of application, the mixture interconnects the base and the upper surface smoothly by a concave shape having a radius or by a ramp-like shape or by a convex shape protruding locally outwardly. In a preferred embodiment, the aspect ratio between the radial thickness of the annular sealing ring and the base is in the range of 2: 1 and 3: 1 (depending on the field of application, other aspect ratios may be appropriate). The aspect ratio between the vertical free length of the annular sealing ring and its radial thickness is preferably in the range of 1: 1 and 4: 1. Depending on the field of application, other aspect ratios are appropriate. The shape of the cross section of the annular sealing ring and the eccentricity of the contact surface with respect to the base of the sealing means is of additional relevance for the field of application because these parameters have an influence on the distribution of forces of ring tension. The shape and alignment of the base of the sealing medium is relevant to the performance and physical behavior of the sealing medium. For example, if the base of the sealing means is inclined (conically) at an angle with respect to the upper part of the closure, the The top of the closure in the opening (opening) of the container becomes more difficult and fails because the mis-coupling is more likely. One reason for this is that the distribution of forces and the initial widening of the seal becomes more difficult. A preferred embodiment of the sealing means and the closure are made by an injection molding process, respectively a two-component injection molding process, in a multi-component mold whereby a sealing liner is made since it is injected a first plastic material in liquid form in a first cavity on a core and a mold cavity when the first material forming the liner freezes. Subsequently, the liner moves with the first core to a second cavity position where a second material is injected for an outer layer of the closure in. the second cavity. The material of the sealing lining and the material of the outer layer are thus integrally joined together. To optimize the production process, the area in the cavity of the sealing liner that is not in contact with the first core is preferably formed such that the sealing liner can be removed from the first cavity without holding forces. Therefore, obstructive biased cuts are mainly avoided that extend perpendicularly with respect to the direction of displacement or the nucleus. By the described injection molding process, a firm bond is obtained between the liner and the layer material. The difference of the two-component closures as known from the prior art, made by a compression molding process, the invention described herein results in a more reliable seal. Problems that typically occur when the closures produced by compression molding are removed, where the closure layer is first processed and the second seal liner, are not presented with the invention described herein. The outer lid is preferably made of Polypropylene (PT) or High Density Polyethylene (HDPE), therefore, the liner is formed of a softer material such as EVA, LDPE or a combined material based on polyolefin raw materials. The embodiment of the closure further comprises a sealing means which interacts with a cylindrical surface free of thread arranged between the thread and the annular top surface of the neck of the container. A preferred embodiment of the sealing means for sealing a neck of a container comprises a radially deformable outer sealing means suitable to be coupled with an outer free surface of the neck, whereby the outer sealing means has a cross-section in general in the form of P with an annular base and an annular sealing ring arranged at a free end of the annular base, projecting radially inwardly above the inner surface of the base and forming in a position coupled with the neck a first sealing area with the outer free surface. In a further preferred embodiment, the sealing means has an outer sealing means with a generally R-shaped cross section. A mixture is arranged at the base and interconnects the base with a vertical upper closing surface. The mixture can form in a coupled position the sealing means and the neck a second sealing area between an edge surface of the neck and the outer sealing means. The outer seal may be formed such that by the interaction between the edge surface and the mixture, the outer sealing means is deformed in a controllable manner such that the annular sealing ring is pressed more firmly against the free outer surface of the neck. The mixture may have, depending on the field of application, different shapes: for example, a ramp-like cross section, a convex cross-section or a concave cross-section. When the mixture is designed as a smooth interconnection, it preferably has a radius R that is greater than the radius of the edge surface of the neck of the container. In a further embodiment, the sealing means, respectively the closure may comprise a liner made of a lining material. In this way, the liner may comprise an inner edge that extends vertically along an outer leg downwardly. An annular sealing ring, made of lining material, can be arranged at the end of the inner edge. In addition, the sealing means may comprise a hole seal whereby the hole seal can be made from the lining material and can have a core made of layer material.

BRIEF DESCRIPTION OF THE FIGURES The sealing means and the closure according to the present invention are explained in more detail according to preferred embodiments. Figure 1 shows a closure with a sealing means in a perspective view from below - Figure 2 shows the closure according to Figure 1 in a perspective view from above, Figure 3 shows a closure with a first embodiment of the sealing means in a side view; Figure 4 shows a cross section through the closure according to Figure 3 along the line AA; Figure 5 shows detail B of Figure 4; Figure 6 shows a closure with a second embodiment of a sealing means in a side view; Figure 7 shows a cross section through the closure according to Figure 6 along the line CC; Figure 8 shows detail D of Figure 7; Figure 9 shows a closure with a third embodiment of the sealing means in a side view; Figure 10 shows a cross section through the closure according to Figure 9 along the line EE; Figure 11 shows detail F of Figure 10.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Figure 1 is showing a closure 1 comprising the sealed means 2 according to the present invention in an isometric side view from below and the Figure 2 of the same seal 1 from a side view and perspective from above. The closure 1 comprises an outer edge 3 that extends generally perpendicular from a disc-like upper portion 4. The outer edge 3 has vertically arranged protrusions 5 on the outside that provide a better grip while the closure is operated. In the interior, the outer edge 3 comprises a thread 6 consisting of thread segments 7.

At its lower end, the outer edge is interconnected to an alteration band 8. The band 8 of alteration of the displayed mode has in general the same outer diameter as the outer edge 3 of the closure. In its interior, the alteration band 8 comprises segments 9 of biased cut that protrude radially inwards and that have a lower part 10 in general spherical. During the application of the closure on the neck of a container (not visible), the spherical segments of biased cut support the centering and alignment of the salting means with respect to the neck of the container. In this way, the failure can be significy reduced due to the inclined application. Above the biased segments, centering elements 11 are arranged, projecting radially above the inner surface 15 in the interaction band 8, which align with the closing z axis and which help to center the closure 1 with with respect to a fastening flange of the neck of a container. In this way the inclination of the alteration band during the opening of the closure 1 is reduced. The alteration band 8 interconnects to the outer edge 3 of the closure 1 by fragile bridges 12 that are destroyed while initially opening the closure 1 The alteration band 8 is distanced from the closing edge 3 by a separation 13. The bridges 12 are arranged in the mode shown in depressions 14 extending the length of the bridges 12 and thus helping to avoid the desired interruption of the bridges 12 during the application of the closure 1. Figure 3 is showing an additional embodiment of a closure 1 in a side view. The closure 1 comprises an alteration band 8 with an outer diameter generally smaller than the edge 3 of the closure 1. The alteration band 8 comprises a shoulder 16 which fits as a contact point during the ejection of the closure 1. bridges 12 are similar to the closure according to Figures 1 and 2 arranged in the depressions 14. The cross section along the line AA is shown in Figure 4. Figure 4 is showing a cross section through the closure 1 and the sealing means 2 along the line AA of Figure 3 and Figure 5 is showing the detail B of the sealing means 2 and Figure 3 in an enlarged manner. In figure 5, a neck 25 (dotted line) of a container is automatically displayed. The sealing means 2 of the embodiment shown is exhibited in a non-deformed manner comprising an outer side seal 20 and an integral V-shaped upper seal 21 projecting from the inner surface of the disc-like upper portion 4 of the seal 1 a generally perpendicular way inside the closure 1 and arranged such that it interacts in a position closed with the annular terminal surface 27 of the neck 25. The lateral seal 20 has a generally P-shaped cross section and comprises a base 22 and an annular sealing ring 23 projecting laterally radially inwardly above the base 22 suitable for sealing on an outer peripheral surface 17 of the neck 25 in a thread-free area above the thread 26. The side seal 20 is arranged radially spaced from the outer edge 3. In the embodiment shown, an annular gap 24 with lateral walls generally parallel in a non-deformed step extends vertically between the side seal 20 and the outer edge 3 of the closure 1 defining the outside free length L of the side seal 20. The thickness t of the annular gap 24 is fixed such that the annular sealing ring 23 and the base 22 can freely extend in the radial direction r + as long as the closure is applied on the neck 25. The vertical length L of the base 22 of the side seal 20 is chosen here such that the annular sealing ring 23 is arranged as low as possible along the free length of the outer vertical surface 17 of the neck 25 in the mode shown just above the beginning of the external thread 26 of the container. The contact area is in a PET container, which depends on the start of the thread, typically placed at approximately 0.5 mm to 2 mm below the surface ring terminal of the neck. By this arrangement, the influence of the dome formation or other deformation of the closure 1 can be defined to a minimum such that the seal 2 becomes above all more reliably. The base 22 adjustable in a laterally flexible and vertically rigid manner of the side seal 20 ensures that the annular sealing ring 23 can be adjusted laterally even while raising the side seal 20 on a neck of a container that is eccentric, especially the direction radial. The radial projection p of the annular sealing ring 23 on its base 22 is relevant for interference with the neck 25. To obtain a radial sealing force, the inner diameter D of the annular sealing ring 23 is smaller than the outer diameter D from a neck of the container. If appropriate, the vertical position of the sealing means 2 with respect to the neck 25 is defined by an additional stop element. Figure 6 is showing a further embodiment of a closure 1 in a side view, Figure 7 is showing a cross section through the closure according to Figure 6 along the line CC and Figure 8 is showing the detail D of Figure 7 in an enlarged manner. The general arrangement of the closure 1 corresponds to the closure as described according to Figures 1 to 5. In the explanation of similar details such as the shore outside, the alteration band and the thread therefore does not repeat again nor is reference made to these figures. As can be seen in Figure 8, the side seal in Figure 20 having in the shown embodiment of the sealing means 2 a generally R-shaped cross section and arranged radially spaced to the outer edge 13. An annular gap 24 with generally parallel side walls in an undeformed state extends vertically between the side seal 20 and the outer edge 3 of the closure 1. The annular gap 24 is chosen such that the annular sealing ring 23 and the base 22 can be deformed at least initially free in the radial direction r as long as the seal is applied to a neck 25 (indicated schematically by the dotted line). The vertical length L of the base 22 of the side seal 20 is adjusted such that the annular sealing ring 23 is arranged as low as possible along the free length 17 of the outer vertical surface of the neck 25 of the embodiment shown just above the beginning of the thread 26. In the applied position, a first sealing zone 30 is developed between the sealing member 2 and the neck 25 since the annular sealing ring 23 is pressing against the outer free surface 17 of the neck 25 due to lateral stretch. As can be seen, the base 22 is mixed on the inside by a mixture 34 having a radius R in a vertical top surface 35 of the closure 1. The mixture 34 is formed such that it is forming a second region 31 of sealing / contact area since it is in the closed position in tight contact with an edge surface 28 interconnecting the surfaces 17 free outer and upper annular surface 27 of the neck 25. The radius R is generally larger than the radius of the edge surface 28 such that a precise interaction zone is determined. During the process of applying the sealed medium 2 on the neck 25, the annular sealing ring 23 of the outer seal 20 is first in contact with the annular upper surface 27 and / or the edge surface 28 of the neck 25. During the additional application , the sealing ring 23 is stretched circumferentially until it slides on the free outer surface 17 of the neck 25 establishing a first contact area 30. During the further procedure, the annular sealing ring 23 and the first contact area 30 slide downwardly along the free outer surface 17 of the neck 25 until the mixture 34 is in contact with the outer edge surface 28 of the neck 25 establishing contact zone 31. Since the edge surface presses against the inner root (mixture 34) of the outer seal 20, indicated schematically by the arrow F, it is achieved that due to the geometry of the annular seal 23 it is due to the controlled deformation of the closure pulled inwardly (indicated schematically by the arrow rp) and pressed in this way more firmly against the outer free surface 17 such that the performance of the seal is improved. This functional interconnection between the first and second contact zone is indicated schematically by arrow a. Before the second contact zone 31 is established, the base 22 of the outer seal 20 and is laterally adjustable and fixed in its final position due to the. functional interconnection, when the second contact zone 31 is established. In this way, it is elaborated that during the application of the sealing device 2, before the second contact zone 31 is established, all the advantages of the modality as described according to figures 3 to 5 and in the final position, when the second contact zone is established and the outer seal 20 is secured in this way 31, an improved overall sealing performance results. As can be seen the annular sealing ring 23 protrudes locally above the inner side surface of the base 22. The projection 33 has in the embodiment shown in a cross section and generally circular forming a first suitable contact zone between the annular sealing ring 23 and free outer surface 17 and still allows the demolding of the biased cut. He annular sealing ring 23 further comprises a first funnel-shaped conductor on the surface 29 suitable for establishing a first contact between the outer seal 20 and the neck 35 and acting as a ramp for the annular sealing ring 23 such that it slides easily on the outer surface 17 free. The sealing means 2 is additionally equipped with a hole seal 36 which is reached in the closed position in the neck hole 25. The hole seal 36 has a generally conical surface extending from its root, where it is interconnected to the upper disc portion 4 of the closure 1, versus its free end radially outward at an angle a. The cross-section of the base 37 of the hole seal 36 and is generally V-shaped at an angle β having its apex in the free end region. The hole seal 36 further has a second funnel-shaped conductor on the surface 38 which ensures easy plugging of the hole seal 36 in the hole of the neck 25. Adjacent to the second conductor on the surface 38, the hole seal is equipped with a colloidal contact surface 39 forming in the closed position a third contact zone 32 between the sealed means 2 and the inner side surface 41 of the neck 25. As can be seen, the sealing means 2 is shown in a non-sealed state. warped and it's because it overlaps with the neck symmetry 25. However, it is clear that the closure 1 is adjusted during operation to the neck 25 due to the elastic deformation of the closure material. The root diameter Dr of the hole seal 36 is chosen such that the hole seal 36 does not interact with the neck of the closure in the area of its base. During the application of the toroidal sealing means 20 in the neck 25, the hole seal 36 is bent inwards in the r direction such that it fits the inner diameter Di of the neck orifice 25. In the described embodiment of the invention, the The third contact zone 32 established in the closed position is arranged at approximately the same vertical level (z direction) as the first contact area 30 of the outer seal 20. By this opposite arrangement at the same level, the neck 25 is firmly retained which results in increased rigidity and increased sealing performance. The closing vent angle can be adjusted by the active length Lb corresponding to the distance between the third contact zone 32 and the root of the hole seal 36. To obtain a longer vent angle the active length Lb of the hole seal 36 is increased and to reduce a smaller vent angle it is reduced (the relief angle corresponds to the angle at which the closure will be tilted until the vent is present ). Depending on the field of application, the hole seal can be avoided.

If the sealing means comprises in the area or adjacent to the intermediate top surface a generally v-shaped projection (not shown in detail) forming an upper seal (fourth contact zone / sealing region) and the position interacts of closing with an annular upper surface 27 of the neck 25. Figure 9 shows a further embodiment of a closure 1 comprising a sealing device according to the present invention in a side view elaborated by the injection molding of two components. Figure 10 is showing a cross section through the closure according to Figure 9 along the line EE and Figure 11 is showing the detail F of Figure 10 in an enlarged manner. A detailed explanation of how a sealing means as shown in Figures 9 to 11 can best be elaborated is explained in full detail in the patent application PCT / EP2005 / 051559 of the same inventor as the invention described herein which is now incorporates completely and with all the modalities in the present patent application. Attention is now directed to Figure 11. The cross section and functionality of the sealing means 2 as shown in Figure 11 corresponds to the sealing means shown in Figure 8 with the only difference that the sealing means is made here of two materials (layer material and lining material). With respect to functionality, therefore, it refers to Figure 8 and the explanation corresponds to this. Unlike the closures described according to the above embodiments 1 to 8, the sealing means 2 of the closure according to Figures 9 to 11 is made of two materials preferably by injection molding and two components having an outer layer 45 (top portion 4 disc type and outer edge 3) made of a layer material and a sealing liner 46 made of lining material which here covers all surfaces exposed to the article stored in the container to be sealed. The outer layer 2 of the closure 1 is preferably made of Polypropylene (PP) or High Density Polyethylene (HDPE), whereby the sealing liner 46 is preferably formed of a softer lining material such as Darex ™ corao. The outer layer 45 and the sealing liner 46 are firmly joined, as shown here, to each other along their surfaces 49, 50, such that it becomes possible to save the application and placement of the sealing means 2. The base 22 of the sealing means 20 comprises an outer downwardly drawn leg 47 of the layer material supporting an outer edge 48 made of the lining material. Leg 47 down supports and stabilizes the shore interior 48 and the ring 23 of toroidal sealing partially made of lining material and arranged at the end of the base 22 in a lateral and vertical direction. As can be seen, the liner 46 is formed such that it extends in the xy direction along the interior top surface 45 of the closure 1 and down along the leg 47 downwardly outside (in the z direction). The inner edge 48 is combined by the combination 34 in the vertical top surface 35. Both the inner edge 48 and the inner base 22 are shown in a non-deformed manner but will extend radially outwardly during application onto a neck of a closure. The vertical boundary surface 49 between the leg 47 downwardly of the sealing liner 46 and the inner edge 48 of the embodiment shown are generally standing and slightly tapered such that the liner 46 can be easily removed from the mold after molding in the first stage. Depending on the field of application, the boundary surface may have a different shape as indicated by the line s such that the lower end of the outer seal 20 is made entirely of layer material and supports only at its lower end by the outer leg 47 towards down. As explained with reference to Figure 8, the sealing means may comprise in the area or adjacent to the upper and intermediate surface a protrusion in general of v (not shown in detail) forming an outer seal (fourth contact zone) and interacting in the closed position with an annular upper surface 27 of the neck 25 (see Figure 8). The sealing means 2 further comprises, in the embodiment shown, a hole seal 36 having, unlike the embodiment shown in Figures 6 to 8, a generally olive-shaped cross section. As can be seen, the hole seal 36 is integrated to the lining disc 46. If appropriate, the hole seal 36 may comprise an elaborate section of layer material to obtain increased integral support. Alternatively or in addition, the hole seal can be supported by side ribs (not shown in detail).

Claims

CLAIMS 1. Sealing means for sealing a container neck, characterized in that the sealing means comprises: a) a radially deformable outer seal means suitable to be coupled with an outer free surface of the neck, so b) the medium outer sealing has a generally P-shaped cross section, with c) an annular base and d) an annular sealing ring arranged at a free end of the annular base, projecting radially inwardly above the inner surface of the base and which forms in a position coupled with the neck a first sealing area with the outer free surface. Sealing means according to claim 1, characterized in that the outer sealing means has a cross section in general in the form of an R so that a combination is arranged in the base and interconnects the base with a vertical upper surface. Sealing means according to claim 2, characterized in that the combination is formed in the coupled position of the sealing means and the neck, a second sealing area between the edge surface of the neck of the outer sealing means. 4. Sealing means according to claim 3, characterized in that the outer sealing means is formed such that by interaction between the edge surface and the combination of the outer sealing means they are deformed in a controllable manner such that the annular sealing ring is pressed more firmly against the outer free surface of the neck. Sealing means according to one of claims 3 to 4, characterized in that the mixture has a ramp-like cross-section. Sealing means according to one of claims 3 to 4, characterized in that the mixture has a convex cross-section. Sealing means according to one of claims 3 to 4, characterized in that the combination has a concave cross-section. 8. Sealing means according to claim 7, characterized in that the mixture has a radius R that is greater than the radius of the edge surface. Sealing means according to one of the preceding claims, characterized in that the sealing means comprises a lining made of a lining material. Sealing means according to claim 9, characterized in that the outer sealing means comprises an inner edge that extends vertically along an outer leg downwards. 11. Sealing means according to claim 10, characterized in that an annular sealing ring, made of lining material, is arranged at the end of the inner edge. Sealing means according to one of the preceding claims, characterized in that the sealing means comprises a hole seal. Sealing means according to claim 12, characterized in that the hole seal is made of the lining material. Sealing means according to claim 13, characterized in that the hole seal has a core made of a layer material. Sealing means according to one of claims 12 to 14, characterized in that the hole seal has a generally conical base protrusion projecting radially outwardly at an angle and an inlet surface generally in the form of a funnel which is interconnected by a toroidal contact surface arranged in the largest diameter area of the hole seal, the base having a thickness that decreases continuously versus its lower free end. 16. Sealing means according to one of claims 12 to 14, characterized in that the hole seal has a cross section in general in the form of olive 17. Closure comprising a sealing means according to one of the preceding claims. The closure according to claim 17, characterized in that the closure comprises a lining made of the lining material which is firmly joined to a closure layer made of a layer material by a two-component injection molding process. 19. Process for applying a closure comprising a sealing means according to one of the claims 1 to 8 on a neck of a container characterized by the following steps: a) aligning the closure above the neck; b) moving the closure relative to the neck until a contact is established between the outer sealing means and the edge surface of the neck; c) further moving the closure relative to the neck such that the annular sealing ring is circumferentially stretched until it slides on an outer free surface of the neck and a first sealing area is established. The process according to claim 19, wherein the closure moves relative to the neck until it establishes a second sealing area between the edge surface and a combination. The process according to claim 20, wherein the edge surface is pressed against the combination, whereby the outer sealing means is deformed in a controllable manner such that the annular sealing ring is pressed more firmly according to the outer free surface.