Cap assembly

Abstract

The invention relates to a closure cap arrangement for arrangement on a dispensing opening of a vessel designed as a crucible or bottle, wherein the closure cap arrangement has a multi-part structure, comprising an outer cap and an inner cap provided with a connecting device for releasably connecting the closure cap arrangement to the dispensing opening and designed independently of the outer cap, wherein the inner cap and the outer cap are connected to one another via a releasable connection, which can be designed as a form-fitting, material-fitting or force-fitting connection, wherein an inner cap part (261) is designed in an upper sleeve section as a clamping sleeve, which has a clamping cross-section whose contour deviates from a circular cross-section of a collar (269) on which a plug-in cap (260) is arranged.

Description

[0001] The present invention relates to a closure cap arrangement for arrangement on a dispensing opening of a vessel designed as a crucible or bottle, wherein the closure cap arrangement has a multi-part structure, comprising an outer cap and an inner cap provided with a connecting device for releasably connecting the closure cap arrangement to the dispensing opening and designed independently of the outer cap, wherein the inner cap and the outer cap are connected to one another via a releasable connection, which can be designed as a positive, materially bonded or force-fit connection.

[0002] Closure cap assemblies of the type mentioned above are often designed as material hybrids, meaning that the closure cap assemblies, composed of a plurality of components, have components made of different materials. These are usually material hybrids or material mixes of aluminum and plastic, so that effective recycling requires separation of the materials, particularly when the respective material content exceeds a certain order of magnitude. This separation often proves to be very complex, and especially when separation is not economically feasible, the inferior or less valuable material is sacrificed to enable recycling of the more valuable material content.This can be done, for example, by melting down closure cap assemblies that contain both aluminum and plastic components for recycling, so that in this case the materials are separated by incineration or gasification of the plastic component.

[0003] The most extensive recycling possible of a closure cap assembly composed of several components is therefore possible, for example, through two different approaches, whereby in the first approach the closure cap assembly is designed in such a way that the individual components can be separated from one another in the simplest way possible, or in the second approach the aim is to have the smallest possible plastic content in order to limit the non-recyclable part of the closure cap assembly to a minimum when sacrificing the plastic material.

[0004] The present invention is therefore based on the object of proposing a closure cap arrangement which enables simplified recycling of the materials used or is characterized by a particularly high proportion of recyclable materials.

[0005] To achieve this object, the closure cap arrangement according to the invention has the features of patent claim 1.

[0006] According to the invention, in the closure cap arrangement, the inner cap and the outer cap are connected to one another via a detachable connection, which can be designed as a positive, material-locking or force-locking connection, so that the closure cap arrangement according to the invention does not have to be fed into a recycling process in its entirety, but rather, prior to recycling, due to material interfaces, the components can be divided up for subsequent feeding of the components to different recycling processes or, if necessary, materials that cannot be recycled or can only be recycled with great effort can be separated from materials with comparatively better recycling suitability.

[0007] The closure cap arrangement according to the invention also offers the possibility of reducing the plastic content to the lowest possible level, for example less than 10 percent, and of choosing a uniform recycling process for the remaining components, particularly in the case where these consist of a uniform material, such as aluminum.

[0008] In any case, the closure cap arrangement according to the invention thus simplifies recycling.

[0009] According to the invention, the inner part of the cap is designed in an upper sleeve section as a clamping sleeve, which has a clamping cross-section that differs in contour from a circular cross-section of a collar on which the plug-in cap is arranged.

[0010] It is particularly advantageous if the outer cap and the inner cap are each connected to one another at their lower edge via concentric contact surfaces, so that on the one hand the material interface is easily accessible when making and breaking the connection and on the other hand the connection is made at a point which is generally not visible when the closure cap arrangement is arranged on a crucible, since the end face of the closure cap arrangement formed by the lower edges of the outer cap and the inner cap generally delimits a shadow gap formed towards the crucible.

[0011] It is particularly advantageous if the inner cap has a sealing disc arranged on a cap base, wherein the inner cap has a locking bead projecting radially inwards adjacent to the cap base for fixing the sealing disc, so that, in particular when the sealing disc is made of a shape-elastic material, the connection of the sealing disc to the inner cap is automatically established when the sealing disc is mounted and a simple separation can also take place.

[0012] Preferably, a cap insert designed as a sleeve is arranged in an intermediate space formed between the inner cap and the enveloping cap, which cap insert is designed as an independent mass component.

[0013] If the clamping cross-section has at least one flattening that deviates from a circular cross-section, such that the diameter of the clamping cross-section in the area of ​​the flattening is smaller than the outer diameter of the collar, the necessary clamping force can be generated using particularly simple means.

[0014] It is particularly advantageous if the clamping cross-section has a plurality of flattened portions distributed over the circumference, so that a corresponding circumferential distribution of the clamping force is the result.

[0015] To achieve a clamping force that acts uniformly across the height of the sleeve section designed as a clamping sleeve, it is advantageous to provide a transition section that forms the cross-sectional transition from an opening edge of the inner cap part to the sleeve section designed as a clamping sleeve. This transition section forms the cross-sectional transition from the circular cross section in the area of ​​the opening edge to the clamping cross section of the clamping sleeve. This ensures that the clamping force is essentially constant across the height of the sleeve section designed as a clamping sleeve.

[0016] Preferred embodiments of the closure cap arrangement are explained in more detail below with reference to the drawings.

[0017] They show: Fig. 1 A closure cap arrangement not according to the invention according to a first embodiment in an isometric view; Fig. 2 which in Fig. 1illustrated cap assembly in exploded view; Fig. 3 which in Fig. 1 illustrated closure cap arrangement in cross-sectional view; Fig. 4 a closure cap arrangement not according to the invention according to a further embodiment in an isometric view; Fig. 5 which in Fig. 4 illustrated cap assembly in exploded view; Fig. 6 which in Fig. 4 illustrated closure cap arrangement in cross-sectional view; Fig. 7 a closure cap arrangement not according to the invention according to a further embodiment in an isometric view; Fig. 8 which in Fig. 7 illustrated cap assembly in exploded view; Fig. 9 which in Fig. 7 illustrated closure cap arrangement in cross-sectional view according to section line IX-IX; Fig. 10 which in Fig. 7illustrated closure cap arrangement in cross-sectional view according to section line XX; Fig. 11 which in Fig. 7 illustrated closure cap arrangement in plan view and partial section; Fig. 12 a closure cap arrangement not according to the invention according to a further embodiment in an isometric view; Fig. 13 which in Fig. 12 illustrated cap assembly in exploded view; Fig. 14 which in Fig. 12 illustrated closure cap arrangement in cross-sectional view according to section line XIV-XIV; Fig. 15 which in Fig. 12 illustrated closure cap arrangement in cross-sectional view according to section line XV-XV; Fig. 16 a closure cap arrangement not according to the invention according to a further embodiment in an exploded view; Fig. 17 which in Fig. 16 illustrated closure cap arrangement in a first cross-sectional view; Fig. 18 which in Fig. 16illustrated closure cap arrangement in a second cross-sectional view; Fig. 19 a closure cap arrangement not according to the invention according to a further embodiment in an isometric view; Fig. 20 which in Fig. 19 illustrated cap assembly in exploded view; Fig. 21 which in Fig. 19 illustrated closure cap arrangement in a cross-sectional view, section line XXI-XXI; Fig. 22 which in Fig. 19 illustrated closure cap arrangement in a cross-sectional view according to section line XXII-XXII; Fig. 23 a closure cap arrangement not according to the invention according to a further embodiment in an isometric view; Fig. 24 which in Fig. 23 illustrated cap assembly in exploded view; Fig. 25 which in Fig. 23 illustrated closure cap arrangement in cross-sectional view according to section line XXV-XXV; Fig. 26 which in Fig. 23 illustrated closure cap arrangement in cross-sectional view according to section lines XXVI-XXVI; Fig. 27 a closure cap arrangement not according to the invention according to a further embodiment in an isometric view; Fig. 28 which in Fig. 27 illustrated cap assembly in exploded view; Fig. 29 which in Fig. 27 illustrated closure cap arrangement in longitudinal section according to section line XXIX-XXIX; Fig. 30 which in Fig. 27 illustrated closure cap arrangement in cross-sectional view according to section line XXX-XXX; Fig. 31 a closure cap assembly according to an embodiment in an isometric view; Fig. 32 which in Fig. 31 illustrated cap assembly in exploded view; Fig. 33 which in Fig. 31 illustrated closure cap arrangement in longitudinal section according to section line XXXIII-XXXIII; Fig. 34 which in Fig. 31 illustrated closure cap arrangement in cross-sectional view according to section lines XXXIV-XXXIV.

[0018] In the Fig. 1 to 31 shows a closure cap assembly 80 comprising a total of four components, comprising an outer cap 81, an inner cap 82 provided with a cap thread 90, a cap insert 83 arranged in a space between the outer cap 81 and the inner cap 82, and a sealing washer 85 arranged on a cap base 84. With the exception of the sealing washer 85, all other components of the closure cap assembly 80 in the present embodiments are made of metal, in particular aluminum. In principle, it is also possible to form the cap insert 83 from a plastic material, in particular in the case where a first radially outer connection 86 between the cap insert 83 and the outer cap 81 and a second radially inner connection 87 between the cap insert 83 and the inner cap 82 provided with the cap thread 90 is designed as a press-fit or adhesive connection.

[0019] How Fig. 2As shown, the cap insert 83 is sleeve-shaped, wherein in the case of the illustrated embodiment, ribs 91, 92 are provided on both its outer surface 88 and its inner surface 89, running axially parallel to a central axis of the cap insert 83. In the event that the connections 86 and 87 are designed as adhesive connections, the ribs 91, 92 on the surfaces 88, 89 enable an enlargement of the adhesive surface.

[0020] To create a connection 93 between a radial connecting edge 94 of a connecting collar 96 formed on an opening edge 95 of the inner cap 82 and a lower edge 97 of the enveloping cap 81, a clamping, adhesive or welding connection can be provided.

[0021] To fix the sealing disc 85 to the cap base 84 of the inner cap 82, a locking mechanism is provided such that the diameter of the sealing disc 85 is selected to be at least slightly larger than the inner diameter of the inner cap 82 defined by a locking bead formed adjacent to the cap base 84 in the inner cap 82.

[0022] In the case of a uniform choice of material for the outer cap 81, the inner cap 82 and the cap insert 83, preferably made of aluminum, only the sealing disc 85 made of plastic has to be released from the snap-in connection with the inner cap 82 in order to subsequently send the other cap components together for collective recycling.

[0023] The Fig. 4 to 6The closure cap assembly 100 shown comprises only an outer cap 101, an inner cap 102 provided with a cap thread 105, and a sealing disc 104 arranged on a cap base 103 of the inner cap 102. The outer cap 101 and the inner cap 102 are each connected to one another at their lower edges via concentric contact surfaces, wherein the connection can be designed as a clamping, adhesive, or welded connection.

[0024] The Fig. 7 to 11 The closure cap arrangement 110 shown is composed of four components, namely an enveloping cap 113 formed from a jacket 111 and a cap base 112, and an inner cap 114 formed from a plastic material, in contrast to the enveloping cap 113 which is formed from a metal, in particular aluminum, with a sealing disc 115 inserted into the inner cap 114.

[0025] In the closure cap arrangement 110, the inner cap 114 formed from a plastic material, in addition to providing a cap thread 126, also performs the function of a connecting device for connecting the jacket 111 to the cap base 112, which together form the enveloping cap 113. In order to implement this connecting function, a connecting sleeve 117 is formed on the peripheral edge of a cap base 116 provided with the cap thread 126. This connecting sleeve extends concentrically to a jacket 118 of the cap base 116 and is connected to the cap base 116 only via a radial web 119 formed on the lower edge of the cap base 116. At the free end of the connecting sleeve 117, it is provided on both an inner side 120 and an outer side 121 with a circumferential locking groove 122 ora locking projection 123 such that a locking bead 125 formed on an edge web 124 of the cap base 112 locks with the locking groove 122 when the edge web 124 of the cap base 112 is inserted into a space formed between the jacket shell 118 of the cap base 116 and the connecting sleeve 117.

[0026] The connection of the jacket cover 111 with the inner cap 114 is effected in such a way that the jacket cover 111 is pushed onto the connecting sleeve 117 of the inner cap 114 until an edge fold 126 formed on the jacket cover 111 engages behind the locking projection 123.

[0027] To prevent rotation between the cap base 112 and the inner cap 114, a locking web 128 is provided on the inner side 120 of the connecting sleeve 117, parallel to the cap axis, which engages with a locking groove 129 formed in the edge web 124 of the cap base 112. A further anti-rotation lock is formed between the radial web 119 of the inner cap 114 and a lower edge 131 of the jacket sleeve 111, such that a locking projection 130 formed on the radial web 119 engages in a locking opening of the jacket sleeve 111. Furthermore, the locking projection 130 serves as an orientation stop for the cap relative to a crucible (not shown here).

[0028] In the Fig. 12 to 34 In various embodiments, closure cap assemblies 141, 142, 143, 144, 145 and 146 with plug-in caps 150, 170, 200, 220, 240 and 260 are shown, which, as can be seen from the Fig. 12The plug-in cap 150 shown in the embodiment shown is preferably intended for positioning on a collar 151 arranged on the neck of a container, for example, a glass bottle. The collar 151 generally serves to cover a dosing pump arranged in or on the neck of the bottle for dispensing a liquid contained in the bottle, such as, in particular, a perfume.

[0029] Fig. 13 shows in an exploded view the plug-in cap 150 removed from the collar 151, which, as shown in the Figs. 13 and 15 is shown, when arranged on the collar 151, is connected to the collar 151 via a clamping connection.

[0030] As can be seen from a summary of the Figs. 13 and 15As can be seen, the plug-in cap 150 is sleeve-shaped and has a sleeve part 152, which is provided at one end with a cap base 153. The sleeve part 152 has spring cams 154 distributed over its circumference, each of which has a cam base 158 separated by two opposing incisions 155, 156 in a sleeve wall 157, which is provided with a radially inwardly directed cam 159, which in the present case is formed by an indentation in the sleeve wall 157.

[0031] The incisions 155, 156 are preferably configured such that they each have a horizontal section 160 extending in the circumferential direction of the sleeve part 152 and two vertical sections 161 extending from the ends of the horizontal section 160, wherein the vertical sections 161 of the mutually parallel horizontal sections 160 are directed toward one another. The opposing incisions 155 and 165 enable the cam 159 formed on the cam base 158 to be moved radially outward against a resilient return movement.

[0032] As in particular Fig. 13shows, the collar 151 is sleeve-shaped and provided on its outer surface with a smooth contact surface 164. On its inner side, the collar 151 has a plurality of radially inwardly projecting and vertically extending clamping webs 165 distributed over the circumference. When the collar 151 is arranged on a bottle neck (not shown here) or on a pump body of a metering pump arranged on the bottle neck, the clamping webs 165 enable the formation of a clamped connection between the collar 151 and the bottle neck or the pump body.

[0033] As can be seen from a summary of the Figs. 14 and 15 The clamping connection mentioned at the outset between the plug-in cap 150 and the collar 151 is brought about by the fact that the radially inwardly projecting spring cams 154 bear against the contact surface 164 of the collar 151 under pretension when the plug-in cap 150 is pushed onto the collar 151.

[0034] The Fig. 16 to 18 serve to explain the plug-in cap 170, which has an inner cap part 171, an enveloping cap 172 and a cap insert 174, preferably designed as a cap weight, inserted into an intermediate space 173 formed between the inner cap part 171 and the enveloping cap 172.

[0035] The cap inner part 171 has a sleeve part 176 provided at one end with a cap base 175, which, as in particular the Figs. 16 and 17 can be seen, is provided at its lower end with a radial collar 177, which merges at its outer edge into a circumferentially formed axial edge web 178.

[0036] The sleeve part 176 has, in a sleeve wall 179, a plurality of spring cams 180 arranged distributed over the circumference, each of which has a cam base 183 separated by two parallel, here vertically extending incisions 181, 182 in the sleeve wall 179, on which a cam 184 is formed, which projects radially inwards and in the present case is formed by an indentation.

[0037] The enveloping cap 172 is also sleeve-shaped with a cap base 186 formed at the upper end of a sleeve part 185 and an opening edge 187 formed at the lower end.

[0038] The cap insert 174 arranged in the intermediate space 173 is also sleeve-shaped, with ribs 191, 192 extending in the longitudinal direction of the cap insert 174 being formed on both an outer surface 189 and an inner surface 190, such that when the cap insert 174 is arranged in the intermediate space 173, intersection points are formed between the horizontally extending beads 188 and the vertically extending ribs 191, where clamping forces are exerted. Clamping also occurs between the vertically extending ribs 192 and the sleeve wall 179 of the cap inner part 171.

[0039] A direct connection between the cap inner part 171 and the enveloping cap 172 is made between the opening edge 187 of the enveloping cap 172 and the edge web 178 formed on the collar 177 of the cap inner part 171, wherein this connection can optionally be designed as a press connection, adhesive connection or welded connection.

[0040] As can be seen particularly from a summary of the Figs. 16 and 17 As is clear, the plug-in cap 170 or the cap insert 171 is designed to be arranged on a collar 193, which is located on a bottle neck (not shown in detail) or on a pump body of a metering pump. The collar is provided with a horizontally circumferential locking bead 194, with which the spring cams 180 formed on the cap inner part 171 engage when the plug-in cap 170 is pushed on. To ensure secure locking of the cap inner part 171, an axial stop is formed on the collar 193 by a radially outwardly projecting collar shoulder 195.

[0041] The Fig. 19 to 22show the plug-in cap 200, which in its basic structure and function corresponds to the cap inner part 171 of the plug-in cap 170, wherein the plug-in cap 200, in contrast to the cap inner part 171, has neither a collar 177 nor an edge web 178 at the lower edge of a sleeve part 205.

[0042] The plug-in cap 200 is used for locking arrangement on a Figs. 20 and 21 shown collar 202, which, in contrast to the collar shown in the Fig. 16 The collar 193 shown, which serves for combination with the plug-in cap 170 provided with the cap inner part 171, has no collar shoulder.

[0043] Apart from this, the formation of a locking connection between the plug-in cap 200 and the collar 202, which, in accordance with the collar 193, is provided with a horizontally circumferential locking bead 203, takes place in such a way that, as shown in the Figs. 21 and 22As shown, when the plug-in cap 200 is pushed onto the collar 202, the cams 184 formed on the spring cams 180 engage in the locking bead 203 when the spring cams 180, after a radially outwardly directed elastic deformation caused by an upper opening edge 204, spring into the locking bead 203 upon reaching the locking bead 203.

[0044] In the Fig. 23 to 26 In a further embodiment, the plug-in cap 220 is shown, which, as in particular the Fig. 24 to 26 can be seen, has an inner cap part 221 and an enveloping cap 222, each having a sleeve part 223, 224, which is closed at one end by a cap base 225 or 226 and at the respective opposite end has a cap opening with an opening edge 227 or 228 formed by a lower edge of the sleeve part 223 or 224.

[0045] The cap inner part 221 has spacer devices 229 distributed over the circumference of a sleeve wall 231 and projecting radially outwards, which in the present case are formed by a plurality of ribs 230 running parallel to one another in the longitudinal direction of the sleeve part 223. In each wall region of the sleeve wall 231 arranged between two spacer devices 229, a spring cam 232 is formed, which on a cam base 234 divided by two notches 233 in the sleeve wall 231 running parallel and in the present case in the longitudinal direction of the sleeve part 223, has a Figs. 25 and 26 show, has radially inwardly projecting cams 235. As Fig. 25shows, the sleeve wall 231 of the sleeve part 223 is provided in the present case with three spacer devices 229 distributed equidistantly over the circumference and also has three spring cams 232 arranged between two spacer devices 229 and distributed equidistantly over the circumference.

[0046] To clarify the function of the spring cams 232, Fig. 25 with dash-dotted lines the contour of a collar 151 ( Fig. 13), which is provided with a smooth outer surface. To arrange the plug-in cap 220 on the collar 151, the mechanical assembly formed from the cap inner part 221 and the enveloping cap 222, in which the enveloping cap 222 is preferably produced via a frictional connection formed between the spacer devices 229 and a sleeve wall 236, is pushed onto the collar 151, wherein the spring cams 232 elastically deflect into a spring chamber formed between the spring cams 232 and the sleeve wall 236 of the enveloping cap 222, forming a radially inwardly acting prestressing force. The plug-in cap 220 is secured on the collar by the spring force exerted on the collar 151 by the spring cams 232 and can be arranged on the collar or removed from it by overcoming the spring force. The connection between the cap inner part 221 and the enveloping cap 222 can also be made by gluing or welding.

[0047] In the Fig. 27 to 30In a further embodiment, the plug-in cap 240 is shown, which in the case of the exemplary embodiment shown here has an inner cap part 241 and an enveloping cap 242, wherein the enveloping cap 242 has a sleeve part 243 with a uniform diameter, which is closed at one end by a cap base 244 and has a cap opening with an opening edge 245 at its opposite end. The inner cap part 241 has a sleeve part 246 with a stepped diameter, such that a first sleeve shoulder 250 is formed in the transition from a first sleeve section 248, which is closed at one end by a cap base 247, to a second sleeve section 249 with a larger diameter, and a second sleeve shoulder 252 is formed in the transition from the sleeve section 249 to a radially outwardly offset opening edge 251.In the present case, the connection between the cap inner part 241 and the enveloping cap 242 can be achieved by forming a welded, pressed or adhesive connection between the opening edges 245 and 251.

[0048] For the fixed arrangement of the plug-in cap 240 on a collar 253, the sleeve-shaped collar 253 is provided on the outside of a sleeve wall 254 with a plurality of clamping webs 255 distributed over the circumference of the sleeve wall 254, which, as in particular the Figs. 28 and 30 show, protrude radially outwards from the sleeve wall 254, so that when the plug-in cap 240 is arranged on the collar 253, clamping forces are formed between the sleeve part 246 of the cap inner part 241 or the sleeve section 249 and the three clamping webs 255 in the present case.

[0049] As in particular Fig. 29shows, when the plug-in cap 240 is arranged on the collar 253, the sleeve shoulder 250 formed between the sleeve section 248 and the sleeve section 249 serves as an axial stop against an upper collar edge 256.

[0050] In the Fig. 31 to 34 As a further embodiment, the plug-in cap 260 is shown, which, as in particular the Fig. 44 and 45 show, has an inner cap part 261 and an enveloping cap 262, wherein both the inner cap part 261 and the enveloping cap 262 are sleeve-shaped and are each closed at one end with a cap base 263 or 264 and are provided at the opposite end with an opening edge 265 or 266. To form a mechanical connection forming the plug-in cap 260 as a whole, the inner cap part 261 and the enveloping cap 262 are connected to one another at their concentrically arranged opening edges 265, 266 by means of a press-fit, adhesive-fit, or welded connection.

[0051] As can be seen particularly from a summary of the Figs. 33 and 34 As is clear, the cap inner part 261 is designed in an upper sleeve section as a clamping sleeve 267, which has a clamping cross-section 270 which differs in contour from a circular cross-section 268 of a collar 269 on which the plug-in cap 260 is arranged, which preferably has flattened portions 271 on three cross-sectional portions distributed over the circumference, so that the diameter of the clamping cross-section in the region of the flattened portion is smaller than the outer diameter of the collar 269.

[0052] In the present case, the clamping cross-section 270 is formed from a circular shape in that the flats 271 are deformed radially inwards starting from an inner diameter that is larger than the outer diameter of the collar 269, so that in the area of ​​the flats 271 corresponding clamping forces act on the collar 269, which enable a clamping fixation of the plug-in cap 260 on the collar 269.

[0053] How Fig. 33 shows, a transition section 272 is formed to form a cross-sectional transition from the opening edge 265 of the cap inner part 261 to the clamping sleeve provided with the clamping cross-section 270, which transition section forms the cross-sectional transition from the circular cross-section in the area of ​​the opening edge 265 to the Fig. 34 shown clamping cross section 270 of the clamping sleeve 267.

[0054] For improved handling of the plug-in cap 260, which in particular enables the plug-in cap 260 to be pulled off the collar 269, an upper handle part 272 of the enveloping cap 262 is provided with a handle projection 273 which projects radially outwards relative to the opening edge 266 and which in the present case is realized by the formation of a knob part.

Claims

1. A closure cap assembly for placement on a dispensing opening of a vessel configured as a crucible or bottle, the closure cap assembly having a multi-part construction comprising an outer cap (262) and an inner cap provided with a connecting device for releasably connecting the closure cap assembly to the dispensing opening and configured independently of the outer cap, the inner cap and the outer cap being connected to one another via a releasable connection, which may be configured as a positive, materially bonded, or force-fit connection, characterized by that a cap inner part (261) is designed in an upper sleeve section as a clamping sleeve (267) which has a clamping cross-section (270) which differs in contour from a circular cross-section of a collar (269) on which a plug-in cap (260) is arranged.

2. Closure cap assembly according to claim 1, characterized by thatthe outer cap and the inner cap are each connected to each other at their lower edge via concentric contact surfaces.

3. Closure cap assembly according to claim 1 or 2, characterized by that the inner cap has a sealing disc arranged on a cap base, wherein the inner cap has a locking bead projecting radially inwards adjacent to the cap base for fixing the sealing disc.

4. Closure cap assembly according to one of the preceding claims, characterized by that the clamping cross-section (270) has at least one flattening deviating from a circular cross-section, such that the diameter of the clamping cross-section in the region of the flattening is smaller than the outer diameter of the collar (269).

5. Closure cap assembly according to claim 4, characterized by that the clamping cross-section (270) has a plurality of flattened portions (271) distributed over the circumference.

6. Closure cap assembly according to claim 5, characterized by that to form a cross-sectional transition from an opening edge (265) of the cap inner part to the sleeve section designed as a clamping sleeve (267), a transition section is formed which forms the cross-sectional transition from the circular cross-section in the region of the opening edge to the clamping cross-section (270) of the clamping sleeve (267).

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