MXPA99009846A - Plastic closing cap with a separable safety seal and inner seal - Google Patents

Abstract

The aim of the invention is to produce a one-piece plastic closing cap, especially made of polyethylene material, which can be placed on a filled container without special tolerance requirements while simultaneously fulfilling the additional, partially contradictory requirements. The inventive closing cap can be produced using few steps. Said cap can be molded and removed from a mold, and can be recycled after use. Another aim of the invention is to reliably ensure both the safety and sealing functions for the closed container. To these ends, the invention provides a closing cap having an elongated safety seal and an inner seal which is elongated, for example, which extends along the edge of the container neck and into the opening. The inventive sealing cap is characterized by having a funnel-shaped or bell-shaped extension on the free end of the elongated safety seal, a funnel-shaped outer surface on said elongated inner seal, and an average functional strength of the plastic material pertaining to the one-piece closing cap (especially the strength of the polyethylene material). The funnel-shaped or bell-shaped safety seal extension sits on the holding collar of the filled container in such a way that it cannot engage upwards, and the outer surface of the funnel-shaped inner seal lies on the container neck such that it can press against the same in an elastic manner.

Description

PLASTIC CLOSURE LID THAT COMPRISES A DEPRENDIBLE CANCELLATION WARRANTY AND AN INTERNAL SEAL FIELD OF THE INVENTION The closure caps made of a plastic material for closing containers, in particular bottles, are widely used according to the state of the art. Many kinds of closure caps are provided with an annular guarantee band which can be detached and detached from the closure cap when the bottle is opened. Provided that the annular warranty band is in an intact state connected to the closure cap by small links, it indicates the original status of the contents of the bottle. Therefore, it is guaranteed that the closure cap is fixed to the neck of the bottle in its original state, preferably screwed thereto. For this purpose, the guarantee band, subsequent to the filling and closing of the container, is grasped around and below an edge or projection of the neck of the bottle. When the closing lid is opened, the links that extend between the side wall of the closing lid and the guarantee band are broken by the tension and cutting forces. The guarantee band rests on the neck of the bottle and the closure cap can be unscrewed completely, BACKGROUND OF THE INVENTION At present, polypropylene (PP) is preferred as the most used plastic material for the body of the closure lid. Plastic PP material is relatively hard so that the function of the warranty band is held securely. It is almost impossible to raise the PP closing lid by a tool without damaging it in a visible way. Since the different sorting mechanisms of the filling system can process only a uniform range of heights of the closing covers without adjustments, the height is uniformly set at approximately 20 mm. The guarantee band rests firmly on the neck of the bottle and separates immediately when you try to open the bottle. Beneath the edge or projection that is grasped below its underside by the removable annular warranty band, a support collar is also provided. The bottle is suspended in a conventional manner in this support collar while it is filled and then closed. In this case, the bottles are formed particularly of PET or PEN plastic material. The annular guarantee band of the closure cap, with the PP mode of the state of the art conventionally used and signaled herein, ends at a distance of approximately 2 mm above the neck support collar of the bottle. The disadvantage of the known closure cap consists in the fact that it must be manufactured in two parts. Polypropylene is a very hard material to form the seal flanges that tighten the space between the neck of the bottle and the closure lid. This is particularly critical with PET bottles that may be affected by a greater number of irregularities and deformations with respect to glass bottles. A softer seal is made for example of ethylene and vinyl acetate (EVA), that is, two different steps of injection molding are needed as well as a subsequent step for coupling the two pieces of the closure cap. In order to avoid this disadvantage, single-piece closure covers made of polyethylene (PE) have already been proposed. This type of material is softer than polypropylene and therefore can securely hold the tightening function when forming the seal system, when the closure cap is manufactured in one piece by a single injection molding step. On the other hand, when a softer PE material is applied, there is a risk that the warranty band is fraudulently detached and integrity is violated. Therefore, the closure cap made of PE of one piece has not been successful due to the problem of securing the guarantee. For this reason, there is a need for a one-piece plastic closure cap, whose guarantee function offers more security than before. From the specification of U.S. Patent 4 592 476, a plastic closure cap is known in accordance with the preliminary part of patent claim 1, wherein the peel-away warranty band extends in the direction of the patent. central axis of the closing lid. In accordance with the specification of the U.S. Patent, the warranty band extends upward toward the container support collar when the closure cap sits in the container opening and the warranty band is grasped below the container. edge or projection of the neck of the bottle. From the European Patent Application EP 536 082 a closure cap made in one piece is known together with the guarantee band by injection molding. The connection elements are located between the closing cover- and the guarantee band. An internal seal is provided on the underside of the lid cover.

From the European Patent Application EP 316 167 the combination of a bottle and a closure lid is known. The bottle consists of polyethylene terephthalate (PET). The closure cap is formed of a thermoplastic resin such as polyolefin. The closure cap has an annular shoulder 10 resting on the outer and upper surface of the neck of the bottle. In addition, the closure cap has an annular rib 13 (inwardly of shoulder 10) that rests elastically on the inner surface of the neck of the bottle. From the International Application WO 93/24386 there is known a closure cap for PET bottles of multiple shapes provided with a cover wall with an internal thread, a front wall that closes the wall of the lid and a guarantee band that connects the wall of the lid. The. The front wall has a circular inner seal separated from the wall of the lid and projecting downwards towards the open end of the lid, with the external diameter of the seal tapering in the region of the free end towards the latter. For the use of gas tightness, the closure cap is configured in such a way that the inner seal has an edge in the region of the free end facing the wall of the cap and so that the edge encloses the region that tapers with regarding its external diameter.

Finally, a closing lid for a releasable closure of a container is known from International Application WO96 / 02430 comprising a lid body corresponding to the container. The body of the lid and a seal cooperate with the upper edge of the container to close the same. The closure cap comprises at least one shoulder formed in the body of the cap whose shoulder extends opposite the upper edge and cooperates in the closing phase with the seal. In addition to reliably securing the warranty function and seal function, it is desirable not to impose particular requirements for the benefit of these closure caps in terms of tolerances. Also, it is desirable that the closure cap can be manufactured, i.e., formed in a mold and detached therefrom in a few steps and that is capable of being recycled after use.

SUMMARY OF THE INVENTION Therefore, the problem to be solved by the invention is the provision of a one-piece plastic closure, in particular, made of PE material, which can be placed in a full container, without satisfying particular requirements of tolerance, while simultaneously satisfying the additional requirements, partly contradictory, mainly, to be manufactured in a few steps and be suitable for recycling after use, while ensuring the warranty function and seal function. In accordance with the present invention of the combination type, the solution consists of the provision of a closure cap having an extended warranty closure band and an extended inner seal, i.e., a seal projecting around the neck edge of the cap. container and along the same, inside the opening, whose lid is characterized by the combination of: a funnel or bell-shaped extension on the free end of the warranty band; an external surface in the form of a wedge in the extended internal seal; and a regular average solidity of the plastic material of the one-piece closure cap (in particular with reference to the PE material), so that the funnel-type or bell-type extension is seated in the container support collar in a non-permanent manner. grasrable from below; and the wedge-shaped external surface of the inner seal rests on the neck of the container so as to exert pressure. Because the funnel-shaped extension in the warranty band and the wedge-shaped external surface or funnel in the inner seal, the plastic lock can be placed in a full container with no particular tolerance requirements. Due to the formation of the lid in one piece, the plastic lid can be formed and extracted (deformed from) of the mold in a few steps. Due to the same peculiarity, (only one type of plastic material), the plastic closure lid allows to be recycled after use. The guarantee function for the closed container is reliably supported by the fact that the funnel-shaped or bell-shaped extension of the guarantee band sits on the full container support collar. The hermetic function for the closed container is reliably assured by the fact that the wedge-shaped external surface or funnel of the inner seal rests on the neck of the container. The plastic material has, when used, a stiffness that is sufficiently hard to provide the funnel-shaped band of guarantee and at the same time sufficiently soft to provide the extended internal seal in the form of a wedge. The notches in the warranty band and the inner seal can be removed from the mold * as long as the hot plastic material has not reached the strength or total strength required for its use. Other features of the invention are characterized in the subclaims. According to claim 4 of the patent, the guarantee band can be longer in the direction of the central axis of the closure cap than the usually applied 20 mm. In particular, a total height of 23.5 mm is appropriate for closing currently used PET bottles. When using these heights, the warranty band extends down towards the support collar and is pressed tightly on it. The lower end of the warranty band can be seated on it in a bell-like manner so that it can not be grasped underneath and also offers greater safety, even if relatively soft PE material is used. A one-piece structure of the complete closure cap (claim 2 of the patent) is obtained. The preferred polyethylene (PE) material used under these circumstances is characterized in claim 3 of the patent. It is of great importance to adjust all functions of the closure cap to the shape and material of the container that will be closed. In the preferred example or embodiment, the container is a bottle (claim 6 of the patent) which is provided with a screw cap. The bottle is preferably made of a plastic material (claim 7 of the patent). Nowadays, PET bottles, although also PEN bottles, are widely and conventionally used (claim 8 of the patent), where the plastic closure caps claimed are particularly appropriate. However, the preferred examples of the embodiment with regard to the structure and use of the closure caps are not intended to restrict the invention formulated in claim 1 of the patent. In the subclaims or dependent claims 9 to 23, an "a" seal system combined with the warranty band is claimed. In subclaims 24 to 35, the objective is a "b" seal system in combination with the extended warranty band. Sub-claim 36 refers to a scaly structure on the back of a thin, wedge-shaped seal rim.

BRIEF DESCRIPTION OF THE DRAWINGS The invention of combination will be explained hereafter in more detail by means of Figures 1-4, which illustrate: Figure 1 is a basic principle of a closure cap according to the invention comprising of a Extended warranty band and an extended internal seal; Figures la, 2a, 3a show an example of the "a" mode of the closing lid according to the invention, in the manner of an axial section of the lid (Figure 1), an axial partial section (Figure 2a) of the cap screwed on a bottle and a horizontal section (Figure 3a) along line AA of Figure la; Figures Ib, 2b, 3b are an example of the "b" mode of the closing lid according to the invention in the manner of an axial section (Figure Ib) in the closed state and for a container (Figure 2b) that will be closed in an axial section (Figure 3b); Figure 4 is an example of a "c" mode of the closure cap according to the invention, in the axial section.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings of the patent, in Figure 1 and Figure a preferred example of an embodiment of the invention is presented in an axial section. The shape given to the closing lid is accentuated by a right shoulder while the shape given on the neck of the bottle inside the lid is accentuated by a left shoulder. The closure cap is a one-piece cap, that is, the three seal flanges 8a, 10a, 15a that extend opposite the neck of the neck 1 of the bottle, are manufactured in the one-step process, as well as It is done with the warranty band. In Figure 1, the closure cap is shown in a condition in which it is screwed firmly onto the neck of the bottle. The securing band 6 which is connected to the body 2, 3, 4 of the closure cap by the bars 5 is gripped under a buckling 0 projection on the outer side of neck 1 of the bottle. The separable guarantee band 5, 6 extends far in the downward direction and sits on the bottle support collar. The support collar is used to suspend the container, in this case a PET bottle, in a transport device while the container 1 is going to be filled and closed. Although the adjusted guarantee band 6 is relatively soft, it is adjusted according to the invention, however, it remains firm on the neck of the bottle and breaks immediately when the screw-type cover is to be opened. The shape given to the lid 2 to 7 plastic closure allows for the first time to meet the technical requirements that comprise a simple manufacture (closure cap of a single piece), and simultaneously with the function of secure seal (soft material for the flanges of seal), simple form of opening (easy breakaway of the guarantee band) and a reliable guarantee function (guarantee band that rests hermetically on the container).

Claims 9 and 10 of the patent refer to a special closure lid for use with reusable PET bottles, with a lid wall provided with an internal thread, a front side that closes the "lid wall and a guarantee band. annular that fits into the lid wall and includes a predetermined separable rupture point, with the front wall provided with a circular inner seal, spaced from the lid wall and inclined to the open end whose outer diameter is tapered within the region of the free end towards the latter With reference to the covers, they are always of the type to be screwed in bottles, in particular to close the so-called reusable bottles.This type of bottles is used for the filling of drinks of any kind, particularly They are filled with beverages containing carbon dioxide, and consequently, the closure lid used with them also supports the pressure of the gas generated inside the bottle. a and in this way the lid must be closed respectively in a gas-tight manner on the bottle and in relation to it. For a long time, the so-called PET bottles are also currently on the market and are of the reusable plastic type and are offered in particular in a format with a filling volume of 1.5 liters. Due to the considerable tolerances associated with these bottles in the region of the mouth of the bottle, there are specific problems of sealing with these bottles with respect to the closure caps to be used. Consequently, the closure caps that are required must be subject to special seal measures. In addition, reference should be made to the fact that the PET bottles in question no longer have objectionable mouths and threads of multiple use, because these bottles are more often deformed and damaged when handled by users and bottlers. In order to remedy the problem explained above, when reviewing the state of the art, a solution has been reached, where the closure caps are provided with a specific material for sealing, at least in the region of the wall front, where the front surface of the mouth of the bottle rests in the mouth of the bottle. For this purpose, preferably, a soft plastic material is used, different from the other material of the closure cap-aluminum or even plastic. Accordingly, by this measure, a one-piece closure cap comprising different materials is provided, which is no longer justified in view of the fact that the recycling of this type of parts is increasingly required. Mainly, within the practice it is not possible to remove an additional seal, made of a second material and inserted inside the closure lid after the use of it to start a specific type of recycling for that material. Consequently, with this type of closure caps with different components, all you have to do is throw the lid in the domestic trash. Although these actions should be avoided in the future, and this known solution of practical experience and used to obtain a gas tight seal, particularly for returnable PET bottles, is not qualified for implementation, except in case of extreme need. In this context, and in accordance with the invention, it is perceived that for the purpose of closing a bottle in a gas-tight manner by the described screw-in closure cap, a specific configuration of the internal seal is required. The specific configuration is characterized in that the internal seal comprises a buckling located in the region of the free end and directed towards the wall of the lid, the buckling being pressed against the inner wall of the bottle when the closure cap is screwed into the bottle. Due to the configuration of the buckling in the region of the free end and due to the integration of the region tapering in relation to the external diameter in buckling, the inner wall is pressed strongly against the inner wall of the bottle §with the cover of closure screwed onto it§ and forms an effective seal. A gas pressure generated inside the bottle is used in a somewhat advantageous manner to press the inner seal on the inner wall of the bottle, whose edge formed at the free end of the inner seal is pressed with enormous pressure against the inner wall of the bottle by virtue of the considerable distance to the front wall. Due to the relatively deep extension of the inner seal with respect to the edge disposed at the free end inside the bottle, a slippage of the edge into the mouth of the bottle is not possible, instead a certain sliding of the edge along the length is possible. of the internal wall of the bottle, without sacrificing the effect of hermeticity. As an alternative to the teaching discussed above, according to the invention, the invented closure cap can also be characterized by the features of claim 10. In accordance with this claim, the inventive closure cap is adapted in such a way that the The front wall comprises a first inclined circular wedge seal located in the region between the lid wall and the inner seal and descending, at least slightly towards the inner seal. Within the theoretical framework of this inventive alternative, it has been recognized that a sufficient and effective sealing effect between the closure lid and the bottle to be closed can be implemented by forming a seal between the inner seal and the lid wall, called Wedge seal due to its wedge-shaped design. This seal also has a circular shape and bends towards the inner seal by virtue of this inclination towards the inner seal in the course of screwing on the bottle so that the wedge seal rests fixedly against the bottle, in the region of the mouth of the bottle due to its inherent elasticity and tension caused by the screwing procedure. With respect to the particularly effective sealing effect between the closure cap and the bottle, it is advantageous when the internal seal, in addition to the provision of the wedge seal described above, comprises a buckling in the region of the free end and is directed towards the wall of the cap and when this buckling includes the tapered region with respect to its outer diameter. In other words, the features presented above as alternative solutions are combined in a particularly advantageous manner in order to efficiently improve the sealing effect in view of a very high gas pressure inside the bottle. As regards the configuration of the inner seal, it is advantageous when the latter extends approximately straight forward from the inverted side of the wall cover towards buckling and ascending thereto. This means that the inner wall of the entire inner seal forms an approximately circular inner surface. On the side facing the wall of the lid, the inner seal joins the buckling in an approximately bent manner, ie the side of the inner seal facing the wall of the cover extends in the direction of the lid wall. Starting from there, the inner seal tapers more or less with respect to its external diameter in a straight line, whereby a wedge surface is formed which extends from the lower end of the inner seal towards the outermost region of the buckling, by means of this surface, the internal seal, respectively the buckling of the internal seal, is capable of being inserted inside the mouth of the bottle. Due to this wedge-shaped internal design, the inner seal is pressed inwardly along a distance that corresponds approximately to the degree of buckling inclination and, as a result of the inherent elasticity and, thus, of the tension reached. , considerable pressure is exerted on the inner wall of the bottle in the region of the mouth. The buckling has advantageous dimensions and extends towards the wall of the cover so that the internal seal, with respect to the buckling, when under the pressures of the threaded state §-corresponding to the tolerances of the closure cap by a part and from the mouth of the bottle by the other? g with a predetermined force of pressure against the inner wall of the bottle in the region of the mouth of the bottle. The first aforementioned wedge seal is positioned and has the dimensions in a particularly advantageous manner, such that it serves to rest against the radius of the neck of the bottle, where the lid of the lock is in a threaded state, i.e. resting along the transition portion inside the mouth of the bottle. In other words, during the screwing of the closure cap into the bottle, the first wedge seal is bent towards the front wall and by its suitable elasticity and the resistance resulting therefrom in the threaded state, it presses on the radius of the neck of the bottle respectively in the transition portion that joins the mouth of the bottle, ie press on the edge between the front surface of the mouth of the bottle and the inner wall of the bottle. When the pressure inside the bottle is generated towards the wedge seal, it is pressed even more strongly against the radius of the bottle so that by virtue of the internal pressure, the sealing effect increases again. The same happens for the internal seal mentioned above in detail, which, also for the generation of pressure inside the bottle beyond the pressure reached, is pressed, that is, improved by the specific resistance of the material against the internal wall of the bottle. the bottle Concretely speaking, the first wedge seal may have different shapes, for example it may be tapered towards the free end and have practically flat surfaces. Also, the surfaces on both sides of the first wedge seal may have a concave or convex shape. Also, in the same way, a curvature at the free end of the first wedge seal is possible. In order to increase again the sealing effect of the closure cap according to the invention, it is even more advantageous when a second circular wedge seal is provided in the region between the lid wall and the inner seal, preferably in the transition region between the wall of the lid and the front wall, the second seal extends from the front wall respectively with the wall of the lid and is inclined at least a little towards the internal seal. This second wedge seal can be positioned and have sufficient dimensions so that, in the threaded state, it serves for a push rest on the front surface of the mouth of the bottle. The second wedge seal, therefore, bends in the course of screwing the closure cap relative to the front wall, as in the case of the first wedge seal, so that a significant force of pressure is generated in the bottle, more exactly on the front surface of the mouth of the bottle by the inherent elasticity of the second wedge seal. The second wedge seal may also taper outwardly and have almost flat surfaces, with these surfaces on both sides of the second wedge seal being concave or convex in shape. The comments given with respect to the first wedge seal are valid also for the second wedge seal, so that additional consideration with respect to this point is no longer necessary. Finally, with respect to an improvement in the sealing effect of the closure lid according to the invention, the lid wall will preferably comprise the upper region, that is to say in the very close region before the transition towards the closure. front wall, of a circular seal for resting on the outer wall of the bottle, whose front wall will extend approximately radially, respectively inwardly. The seal can be a string packing or a seal ring, preferably, this seal is an integral part of the closure cap. The seal may be rounded towards the inner side in the direction of an airtight buckling and is dimensioned such that it rests on the outer wall of the bottle in a pretensioned state before being screwed into the bottle. The preceding descriptions refer to different hermetic means disposed between the closure cap and the bottle clearly demonstrates that a combination of the seal means, respectively the seals explained above, leads to a type of multiple barrier system with respect to the sealing effect of the bottle In this system, all the seals, with the exception of the seals associated with the lid wall, are respectively configured arranged in such a way that they exhibit an increased seal effect with a high internal pressure, since they will rest against the wall of the bottle, respectively the front wall of the bottle, as a result of the elevation of the internal pressure. Having explained this, it is of particular advantage to provide a warranty band in view of a safe and perceptible closure of the bottle, when combined with it. This guarantee band connects to the lid wall on the flipped side away from the front wall and is provided with a first predetermined break point. However, this arrangement of the warranty band is problematic in that during the opening of the bottle, that is, when the closure cap is unscrewed, the guarantee band is broken in a first step and then many users release it completely. After its use, that is, after emptying the bottle, this completely detached guarantee band frequently enters the inside of the bottle, from which it can be extracted with some difficulty due to its folded shape. The guarantee bands inserted in the bottles can not be removed with the washing. The so-called inspection machines do not detect these bands, so frequently these same guarantee bands used remain in the reusable bottle already filled with drink. The complaints do not wait. Accordingly, a particular advantage is when the warranty band described herein is provided with a second predetermined break point. This second predetermined point of rupture could be located in such a way that it is juxtaposed more or less with the first predetermined point of rupture so that the guarantee band is -in the moment of the rupture subsequent to the breaking of the first predetermined point of rupture ^ divided into two halves of approximately equal lengths as a result of the breaking of the second predetermined point of rupture. By proceeding in this way, the warranty band can not be broken only in one piece, but in two pieces, namely two short pieces. These two joined pieces of the warranty band as a whole can be removed from the bottles by washing through the relatively narrow neck of the bottle in order to solve the aforementioned problem. In view of a simple way of manufacturing, the closure lid is made in one piece. The polyethylene is particularly suited for these purposes, especially since this resin can be subjected to a recycling process without further additional steps. Finally, it is essential with respect to the closing lid according to the invention that: the lid can be made exclusively of the same material, predetermined seals are required and combinations of materials are not required with respect to the front wall, the wall of the lid and the inside of the closing lid. Figures 1a, 2a and 3a show a common example of an embodiment of the closure cap according to the invention for a reusable PET bottle 1 comprising a cover wall provided with an internal thread 2, a front wall 4 which closes the wall 3 of the lid and a circular band 6, 6a of guarantee connected to the wall 3 of the lid and capable of breaking at a predetermined point of rupture 5, where the front wall 4 comprises an internal circular seal 7, 7a , which is separated from the wall 3 of the lid and inclined towards the open end, where the outer diameter of the seal becomes smaller in the region of the free end towards its end. According to the invention, the internal seal 7a includes a buckling 8a which is directed towards the wall 3a of the lid and is formed in the region of the free end. The buckling 8a comprises the region 9a which becomes smaller in its external diameter. Figures la and 2a also show that the front wall is provided with a first circular wedge seal 10a projecting from the front wall 4 and tilting towards the internal seal 7. The internal seal 7 extends along the flipped side away from the wall 3 of the lid approximately linearly towards the buckling 8. On the side facing the wall 3 of the lid, the inner seal 7 extends approximately one arched way toward buckling 8, that is, it joins with the buckling 8 and tapers from there again in a linear fashion with respect to its diameter. The buckling 8 has the necessary dimensions respectively, extended towards the wall 3 of the lid so that the internal seal 7 respectively with the buckling 8 is pressed against the inner wall 11 of the bottle in the region of the mouth 12a of the bottle at apply a predetermined pressure force, when in the threaded state. Figure 2a clearly shows that the first wedge seal 10a is positioned and has the dimensions such that in the threaded state, it serves to provide a pre-loaded view on the inner edge 13a of the neck 14a of the bottle respectively in the transition pass within from mouth 12a of the bottle. The first wedge seal 10a extends towards the free end in the taper and has practically flat surfaces. Figures la and 2a also clearly show that in the region between the wall 3 of the lid and the internal seal 7 forming the transition between the wall 3 of the lid and the front wall 4, a second circular seal 15, 15a is provided of wedge projecting from the front wall 4 with respect to the wall 3 of the lid and inclining towards the internal seal 7. The second wedge seal 15, 15a is positioned and has the dimensions in accordance with the presentation shown in Figure 2a, so that in the threaded state it serves to provide a pre-loaded view on the front surface 16a of the mouth 12a of the bottle . In addition, the second wedge seal 15a tapers toward the free end and has flat surfaces.

Additionally, Figures la and 2a show that the wall 3 of the lid in the upper region, ie in the closest region before the transition to the front wall comprises a circular seal 17a projecting approximately radially, respectively towards the inner side and serves to rest on the external wall 18a of the bottle. This seal 17a is round in the sense of a hermetic buckling towards the internal side, that is, towards the external wall 18a of the bottle. According to Figure 2a, the seal 17 is tapered so that it rests against the external wall 18a of the bottle when it is in the pre-charged and threaded state. Finally, Figures la and 3a show in common that the warranty band 6, 6a includes a second predetermined breaking point 19a. The second predetermined breaking point 19a lies opposite the first predetermined breaking point 5 so that when the guarantee band 6 is broken subsequent to the breaking of the first predetermined breaking point 5, it is separated into two halves 20, 21 of approximately same length, by breaking the second predetermined breaking point 5. Finally, it should be emphasized that the closure cap is made entirely of a single piece and consists of plastic, namely polyethylene. The following descriptions of the purpose of the application refer to the closure caps for closing bottles with GDB drinks, in order to keep the description easy to explain. However, it is expressly pointed out that the present invention is not limited to the closure caps for the bottles with GDB drinks, but can also be applied to any type of container, such as, for example, similar food containers. called Tupperware). Also, the closure cap according to the invention can also be used for reusable bottles (MW) as well as for disposable bottles (EW) made of PET material. The closure caps, with which bottles of beverages or similar containers can be closed, must respond to different requirements. On the one hand, the seal for the beverage bottle, respectively the container, must be obtained in such a way that the beverage contained therein can not run out of the sealed container. If the containers to be sealed are bottles that contain liquids, the conditions are determined by the viscosity of the liquid. If the beverages contained in the bottles are mixed with pressurized gas such as carbon dioxide, the seal must also be gas-tight to prevent gas escaping out of the bottle. Explained in detail, the seal in accordance with the example of the "b" mode is obtained by providing a structure with wavy ribs that presses the seal material directly against the upper edge of the container, whereby a seal area is established inside. , where the seal means is pressed against the upper edge of the container with high pressure. The structure according to claim 24 of the patent allows a controlled positioning of the seal flange on the edge of the container subjected to a high application pressure. This closing process is allowed which leads to an effective seal without unnecessarily complicating the closure lid. Hereinafter, the example of the "b" mode of the present invention is explained in more detail, with reference to Figures Ib, 2b and 3b. In Figure Ib a closure cap for releasably closing a bottle in accordance with a type of embodiment of the present invention, which is currently considered preferred, is shown. The embodiment described herein in detail refers to a screw cap for closing a bottle that may contain a liquid mixed with carbon dioxide. As already mentioned before, the fact is pointed out that the present invention is not limited to screw caps for bottles. Alternative modalities refer, for example, to t cans that are suitable for storing / freezing food or canning jars, but also for closure lids for containers that are not used within the food sector, for example paint buckets. In Fig. Ib, a closure lid in its initial form is shown in a sectional view. The closing lid consists of a body 10b of the lid comprising an upper part 18b and a lateral part 19b practically cylindrical. The lateral part 19b extends substantially in the vertical direction from the plane of the upper part 18b. In accordance with the embodiment shown in Figure Ib, the transition from the upper part 18b to the cylindrical lateral part 19b is not abrupt (sharp edges) but through a transitory rounded portion 20b. It is pointed out that in the embodiment shown, the part 18b of the roof, the lateral part 19b and the transition portion 20b are not separate elements but form in common the body 10b of the lid. A screw thread 12b is formed in the part 19b which serves as a closing mechanism, by means of which the closing lid 10b is secured on the container to be closed. The screw thread 12b cooperates with a corresponding screw thread 112 (see Figure 2b) in the bottle 100. Express reference is made to the fact that the screw thread 12b does not represent the only possible closing mechanism for the container to be closed. All kinds of locking mechanisms, per se known, can also be used, for example eyelet closures, respective nozzles with shoulders that engage recesses, etc. As can be seen from Figure Ib, a seal means in the form of a circular seal flange 13, 13b is provided within the side portion 20b, in accordance with a preferred embodiment of the present invention. The seal flange 13 has an elongated wedge shape. In the inactive state (ie, the state in which the closure lid does not close the container) the seal flange 13 extends from the transient portion 20b in an almost horizontal plane, with, however, a slight preferred portion toward the center point of the container. the closing lid. In a particularly preferred embodiment, the inclination lies between 41 ° and 48 ° against the horizontal plane, in order to facilitate the extraction of the mold (see Figure 4). The width B of the seal flange 13 is preferably selected so that in the closed state, the inner end of the seal flange 13 closes substantially flush with the upper edge 104 of the bottle (see Figure 3b). In a particularly preferred example of the embodiment (see Figure 4), the width B is within the range between 3.8 and 4.5 cm. By using these values, the entire upper edge 104 of the bottle 100 is almost completely covered by the seal flange 13 extending in a circular fashion within the body 10b of the lid. The thin seal flange 13, in the shape of an elongated wedge, is adapted to its profile with different bottlenecks, of course in the closing procedure, the normal torsional movements are exerted on the closure cap. In particular, an adaptation of the profile is carried out on the upper edge 104 of the neck of the bottle both on the outside and on the top and on the inside and on the top. The profile of the seal flange 13 is adaptable to any radius of curvature. The neck of the bottle of a reusable bottle is shorter by approximately 20.7 mm than that of a disposable bottle whose internal diameter is 21.6 mm. In both cases, the seal flange 13 also lies inside the neck of the bottle. At the end, the closure cap, according to the invention, sits hermetically in the bottle, regardless of all imaginable environmental conditions. The inclination described before the seal flange 13 and its inactive position is adapted to the inclination of the upper surface 104 of the bottle 100 relative to the horizontal plane, as can be seen in detail in Figure 2b. According to this Figure, the upper edge 104 of the bottle 100 has an inclination (here amplified for a better illustration) against the horizontal plane H which is indicated by S. The fact that different arrangements of the respective surface 104, depending on the different containers. In accordance with the teaching of the invention, the inclination with respect to the shape of the seal flange 13 is adapted to the container to be closed. In order to achieve success1 according to the invention, providing the seal flange 13 with a different thickness of the profile indicated by the reference character D in Figure Ib is of particular importance. Extensive tests have been carried out in comparison with the hermetic behavior of the fitted closure cap with the seal flanges with different thicknesses, tests have shown that the seal edge 13 preferably has a thickness of 3/10 at its base. to 7/10 mm, and that it should have a thickness in its tip not greater than 5/10 mm and not less than 2/10 mm and in the case of a particularly preferred embodiment the values vary between 2/10 mm and 4 mm. / 10 mm. These values have proved to be particularly advantageous for their application in GDB glass bottles made of conventional plastic materials for the body 10b of the lid. With other closure covers designed to close larger or smaller containers, scale values can be applied. In addition, the seal flange 13 has a specific squamous structure (Figure 4) which cooperates with the irregularity of the upper edge 104 of the bottle 100, so as to cause a better tightness of the bottle. The seal means in a preferred embodiment is located such that a chamber 33 is between an upper portion 18b and the lateral portion 19b of the closure cap and the thin wedge seal rim, that is, as can be seen from the seal flange on the side. This chamber 33 provides a set for the different diameters of the bottlenecks and provides a secure seal of the respective container. In Figure 4, a further, particularly preferred embodiment of the closure cap is shown, in which the seal means has a wave-like structure on the inner surface 18 in accordance with the inventive teaching, with a number of shoulders 34 af arranged in a concentric manner enclosing the upper part 18b. In addition, the inner surface 18 of the closure cap has an inclination of 0.5 ° to 3 ° with respect to the horizontal plane and has undulatory ribs as can be seen in Figure 4. These shoulders 34 are located so that the flange 13 The seal rests on them in the closed state and is pressed against them at the upper edge 104 of the bottle 100. The distance between the shoulder 34 af is selected preferentially so that the entire shoulder lies on the upper edge 104 of the bottle. 100, in other words, the radius Rs of the shoulders that are concentrically surrounded is preferably selected so that the outermost shoulder 34a (Figure 4) respectively 14b (Figure Ib) is in the vicinity of the outer edge of the bottle 100. , while the innermost shoulder 34f (Figure 4) with respect to the 15 (Figure 1) extends adjacent to the inner edge of the bottle 100. In accordance with a particularly preferred embodiment The radius Rs of shoulders 34a-f which are concentrically surrounded, varies between 16.5 mm and 18.5 mm and the radius Rs of the shoulder 15b concentrically surrounding is approximately 17.5 mm. As can be seen particularly from Figure Ib, the shoulders 14b and 15b have different heights Hl and H2. According to the invention, the difference in the heights H2-H1 is selected taking into account the inclination S of the surface 104 of the bottle (See Figure 26), a uniform pressure arises on the upper edge 104 of the bottle 100 in the closed state. Since k * can be observed in particular from Figure 4, the heights of the shoulders 34 in this embodiment are selected according to the invention so that the seal means, so to speak, fits against the upper edge 104. of the bottle 100 in the closed state and provides the effect of tightness to the latter in a safe manner. The shoulders 34 a-f in this embodiment as well as the two shoulders 14b and 15b of the example of the embodiment shown in Figure Ib exert a uniform pressure on the seal flange which is comparatively high due to the small effective surface of the shoulders. In cooperation with the scaly structure provided on the underside of the seal flange and the irregularity at the upper edge 104 of the bottle 100, in this way a secure and reliable seal is obtained. According to another preferred embodiment of the present invention, there is further provided in addition to the seal flange an elastic sheet 16, 16b extending vertically from the upper part 18b and projecting vertically in the inactive state (see Figure Ib) . The seal sheet 16 also extends concentrically to the central line M of the lid body, with the inner edge having a radius R and the outer edge having a radius R2. The radii Rx and R2 are selected so that the seal sheet 16 is directly adjacent to the seal flange in the inactive state. According to a particularly preferred embodiment, the length of the radius R ± is 15.4 mm and the R2 is 11.8 mm. In accordance with the inventive teaching, the sealing sheet 16 fitted with a shoulder 17, 17b, whose highest point in the inactive state of the body 10b of the cover, is located on a cylindrical surface, together with the free end of the seal flange 13. The radius of the shoulder 17 is preferably 0.25 mm and is selected such that the seal sheet 16 extends from the highest point of the shoulder 17 to the tip of the sheet 16 at an angle a. Many comparative tests have shown that the angle α must not exceed 35 ° and must not remain less than 25 °, and that it must be 28 ° in accordance with a particularly preferred embodiment. These values have become particularly advantageous for glass bottles that will be closed when using conventional plastic materials for the body 10b of the lid. For use with other closure caps that must close larger or smaller containers, corresponding scale values apply. As can be seen in detail from Figure 3b, the shoulder 17b of the seal sheet 16 cooperates with the inner side of the bottle 100 in the closed state, with the seal sheet 16b turned from its inactive position and arched towards the inside of the bottle acting on the closing mechanism 12b. Exactly as with the shoulders 14b respectively 34 af, a comparatively higher seal pressure is obtained by the small effective surface of the seal sheet 16b (whose surface is practically predetermined by the bent area of the shoulder 17B) whose pressure is defined by the movement to the right of the deviated seal sheet 16b. The closure cap according to the invention can be manufactured from different materials. If the seal means 11 (together with the shoulder 14b with respect to 34 a-f and the elastic sheet 16) is provided as an integral component of the closure cap, the polyethylene is a particularly suitable cap material.

Claims (36)

1. CLAIMS. A closure cap that includes a removable warranty band and seal beads for containers, comprising: a closure mechanism for releasably securing the closure cap to an opening in the container; * buckling or projection on the container to be grasped by the removable annular warranty band; a support collar in the container for suspending during the filling operation; the securing band has a height in the direction of the central axis of the closure cap that extends beyond the buckling or projection gripped from under the container support collar; and the seal flanges comprise an internal seal, which extends around the rim of the neck of the container and into the opening, characterized by: a funnel or bell extension at the free end of the warranty band; an external surface in the form of a funnel or wedge in the extended internal seal; and an average standard solidity of the plastic material of the one-piece closure cap (in particular with the PE material) so that the funnel or bell extension is seated in the support collar in a non-graspable manner by; and the wedge-shaped surface or funnel of the inner seal rests on the neck of the container so as to press.
2. 2. The closure cap according to claim 1, characterized by a construction that is formed in a single piece, which includes the warranty band and seal flanges.
3. 3. The closure cap according to claim 1 or 2, characterized in that the polyethylene - (PE) is the plastic material.
4. 4. The closure cap according to any of claims 1-3, characterized in that the closure cap, which includes a removable guarantee band, has a height in the direction of the central axis of the closure lid greater than 20 mm in particular of approximately 23.5 mm.
5. 5. The closure cap according to claims 1-4, characterized in that the edge of the guarantee band sits on the support collar as a foot clock.
6. 6. The closure cap according to claims 1-5, characterized in that the container used is a bottle.
7. The closure cap according to claim 6, characterized in that the container used is a plastic bottle.
8. The closure cap according to claim 6, characterized in that the container used is a PET, respectively a PEN bottle.
9. The closure cap according to any of the preceding claims, having a cover wall with an internal thread, a front wall that closes the lid wall and an annular guarantee band fitted on the lid wall and which includes a predeterminable point of separable rupture, wherein the front wall is provided with an internal circular seal separated from the wall of the lid and inclined towards the open end, whose outer diameter is tapered within the region of the free end towards the latter, where the internal seal comprises a buckling and is formed in the region of the free end and directed towards the wall of the lid, the buckling includes the region that tapers with respect to its external diameter.
10. The closure cap according to claims 1 to 8, having a cover wall with an internal thread, a front wall that closes the cover wall and an annular guarantee band fitted on the cover wall and includes a predetermined point of tear-off rupture, wherein the front wall is provided with an internal circular seal separated from the lid wall and inclined toward the open end, the outer diameter of which is tapered within the region of the free end towards the latter, where the Front wall comprises the region between the lid wall and the inner seal with a circular wedge-type seal projecting from the front wall, at least slightly inclined towards the inner seal.
11. The closing lid according to claim 10, characterized in that the internal seal comprises a buckling directed towards the lid wall and formed in the area of the free end, and the buckling includes the region that tapers with respect to its diameter .
12. The closure cap according to claim 9 or 11, characterized in that the internal seal on the side turned away from the cover wall extends approximately linearly with the buckling and joins it on the side that is towards the lid wall in an approximately arched manner and tapering there again approximately linearly with respect to its outer diameter.
13. The closing lid according to claim 11 or 12, characterized in that the buckling has dimensions so that it is respectively directed towards the lid wall so that the respective internal seal of the buckling is pressed against the inner wall of the lid. bottle in the region of the mouth of the bottle, when it is in the threaded state.
14. The closure cap according to claims 10 to 13, characterized in that the first wedge seal is positioned and has the dimensions so that when it is in the threaded state, it serves to be applied by thrust in the radius of the neck of the bottle, that is to say in the transition of the region that leads into the mouth of the bottle.
15. The closure cap according to claim 14, characterized in that the first wedge seal tapers towards the free end by having practically flat surfaces.
16. 16. The closure cap according to claim 9 to 15, characterized in that in the region between the lid wall and the inner seal, preferably in the transition portion between the lid wall and the front wall, is provided a second circular inclined wedge seal projecting from the front wall, respectively from the lid wall at least slightly towards the internal seal.
17. The closure cap according to claim 16, characterized in that the second wedge seal is positioned and has the dimensions so that it serves, when in its threaded state, for the thrust application against the front surface of the mouth Of the bottle.
18. 18. The closure cap according to claim 16 or 17, characterized in that the second wedge seal tapers towards the free end with practically flat surfaces.
19. The closing cover according to claims 1 to 10, characterized in that the cover wall in the upper region, ie in the region just before the transition to the front wall, comprises a circular seal projecting approximately in radial form respectively towards the inside, to rest on the external wall of the bottle.
20. 20. The closure cap according to claim 19, characterized in that the seal is rounded inward in the buckling direction.
21. 21. The closure cap according to claim 19 or 20, characterized in that the seal has the dimensions necessary for it to rest in the threaded state and be pushed against the external wall of the bottle.
22. 22. The closure cap according to claims 9 to 21, characterized in that the guarantee band includes a second predetermined point of rupture.
23. 23. The closure cap according to claim 22, characterized in that the second predetermined point of rupture lies opposite the first predetermined point of rupture so that upon breaking of the guarantee band, -subsequent to the rupture of the first predetermined point of rupture ^ it breaks into two halves of approximately the same length, by virtue of the breaking of the second predetermined point of rupture.
24. 24. The closure cap according to claims 1 to 8, having a sealing means cooperating with the upper edge of the container, in order to provide the sealing effect when the closing mechanism is closed, with the sealing means comprising a wedge-type seal flange having a thickness (B) that is substantially greater than the thickness of the upper edge of the container and with the inner surface of the upper part in a location where it cooperates with the seal flange, which has a rib-like or wave-like rib structure.
25. 25. The closure cap according to claim 24, characterized in that in addition there is provided an elastic sheet extending from the inner side of the lid body practically vertical within the opening of the container and having a shoulder resting on the container. , when the closing mechanism is activated.
26. 26. The closing lid in accordance with. any of claims 24 or 25, characterized in that the lid body comprises an upper part and a side part extending vertically towards the upper part; and the seal flange is clamped inside in a transition part that connects the top part to the side part.
27. 27. The closure cap according to any of claims 24 to 26, characterized in that the upper part has an inclination of 0.5 ° to 3 °.
28. 28. The closure cap according to any of claims 24 to 27, with the seal flange that is integrally formed with the cap body.
29. 29. The closure cap according to any of claims 24 to 28, characterized in that the closing mechanism is a screw type mechanism.
30. 30. The closure cap according to any of claims 24 to 28, characterized in that the closing mechanism is a locking mechanism with a clasp. "31.
31. The closure cap according to any of claims 24 to 30, characterized in that the thickness of the seal flange is between the range of 2/10 mm to 4/10 mm at its tip and between 3/10 mm and 7/10 mm at its base 32.
32. The closure cap according to any of claims 24 to 31, characterized in that the seal flange is inclined from 41 ° to 48 ° with respect to the horizontal plane.
33. The closure cap according to any of claims 24 to 32, characterized in that a chamber is arranged between the upper part and the closing lid side part and the wedge-shaped thin seal rim, in order to provide space for its accommodation
34. 34. The closure cap according to any of claims 24 to 33, characterized in that the inner edge of the seal sheet, which provides a connection between the tip of the seal sheet and the shoulder, is open at an angle () with with respect to the outer edge that is within the range of 25 ° to 35 °.
35. 35. The closure cap according to any of claims 24 to 34, characterized in that the inner edge of the seal sheet, which establishes a connection with the tip of the seal sheet and the shoulder, includes an angle ( a) of 28 °.
36. 36. The closure cap according to any of claims 24 to 35, characterized in that the seal flange is provided on its surface, which cooperates with the upper edge of the container, with a rigid type structure.