MXPA00008721A - Container with a discharge nozzle - Google Patents

Abstract

The inventive container (2) has a sealing cap (15) for the discharge nozzle (1) and a discharge opening (8) which is sealed by a membrane (11). Said discharge nozzle (1) has a discharge body (4, 5) with a discharge channel (3) and a connecting element (6) for connecting the discharge body (4, 5) to the discharge opening (8) of the container (2). An element (10) is provided for piercing the membrane (11) during or after the connection of the discharge body (4, 5) to the discharge opening (8) of the container (2). This element (10) is configured as a part of the discharge body (4, 5). An opened container is therefore much easier to reseal.

Description

CONTAINER WITH A DISCHARGE NOZZLE The invention relates to a container with a discharge nozzle and a closure cap for the discharge nozzle, the container having a discharge opening, which is closed by a membrane, and the discharge nozzle having a discharge body with a discharge channel as well as a connecting element for connecting the discharge body to the discharge opening of the container, and providing an element that can pierce the membrane during or after connection of the discharge body and the discharge opening of the container. The known containers of this type are filled with a liquid or pasty product. Relevant examples are adhesive tubes and cartridges for seal seal compounds and other paste products. These containers are known, for example, from DE41266477C2 and DE4420719A1. The containers have three main elements, namely, firstly the container itself with a discharge opening, secondly the discharge nozzle which can be fixed to, or screwed towards the discharge opening and has an elongate narrow channel, which is intended to allow the precise proportion of the contents of the container, and thirdly, a closure lid that is removed before the container is used. In the case of the known containers of the documents, the discharge opening of the container is closed by a membrane, which has to be perforated before the container is used for the first time. Provided for this purpose, within the closure cap, there is a needle-like piercing element that can move axially with respect to the closure cap. When the container is used for the first time, with the closure cap fixed, the needle-like pin moves downward in the direction of the container discharge opening, with the result that the membrane is perforated. The closure cap is then separated from the container together with the needle-like pin, with the result that the contents of the container can exit through the discharge opening and the narrow channel of the discharge nozzle in a proportionate manner. . In another known container (EP 0 155 471 A2), the membrane fits on the tip of the discharge nozzle. Here, too, the snug fit-like element is designed as part of the closure cap. Following the use of the container in accordance with DE 44 20 719 Al or DE 41 26 477 C2, the closure lid usually has to be fixed again to the discharge nozzle in order to prevent the unintended outward flow or drying of the contents of the container. For this purpose, the long needle-like piercing element has to be reintroduced into the narrow channel of the discharge nozzle in order to close the opening of the container. The disadvantage here is that this operation requires a certain amount of experience. In order to simplify the closing operation, the perforating element, in the case of the known containers, can not simply be removed since in this case, the container opening is not fully closed when the closure lid is fixed. The object of the invention, in this way, TS to provide a renewed closure of a container of the type mentioned in the introduction, considerably simpler. This object is achieved, in the case of the container of the type mentioned in the introduction, in that the element that can pierce the membrane is designed as part of the discharge body. It is particularly preferred here that the membrane is only punctured following the connection of the discharge body to the discharge opening of the container, because this reliably avoids the unintended removal of the contents of the container, with the inherent difficulties, when adjust the discharge nozzle. Therefore, in accordance with the invention, the perforating element is designed as part of the discharge element, use can be made of a closed closure cap which is known per se and can be easily adjusted, eg, screwed, towards the container with the perforated membrane and the nozzle of fixed discharge. The task of laboriously inserting an elongated drill element into the narrow channel of the outlet nozzle is no longer necessary. The position of the element for piercing the membrane can preferably be changed axially with respect to the connecting element, with the result that the membrane does not need to be punctured at the moment when the discharge nozzle fits over the discharge opening of the container. Rather, the membrane can be drilled at any desired back point in time in view of the axial change in the position of the piercing element. In an advantageous embodiment of the invention, the discharge body can have two parts which can be changed in terms of their axial position with respect to each other and of which one part contains the membrane piercing element and the other part contains the connection element. In this case, the other part, which contains the connecting element, is preferably essentially annular and the part containing the membrane piercing element is essentially tubular and is arranged essentially concentrically within the annular part. This means that the annular part can be fastened, eg, screwed, to the neck of the container and it is only after the membrane can be pierced by axial displacement of the tubular part within the annular part. For this purpose, it is proposed that the discharge opening of the container have an external thread to which a first internal thread of the annular part can be screwed, and that the annular parts have a second internal thread towards which the tubular part can be screwed to. through its external thread. The membrane perforation, with the tubular parts being rotated only slightly, which is relatively fast compared to the annular part that is slowly screwed into the container, is achieved if the second internal thread of the annular part has a larger pitch than the first internal thread of the same part.

The element for perforating the membrane is advantageously designed as a sharp edge of the tubular part. In order to make the perforation of the membrane easier, the outside of the discharge body, and in particular the outside of the tubular part, has at least one gripping element, in particular fin-like protuberances, grooves or teeth, that the axial position of the element for piercing the membrane can be changed with respect to the connection element. For manual movement of the piercing element, these gripping elements provide a firm grip for the user's hand. In a further configuration of the invention, the drying of the product in the open container is prevented if, in the fixed state, the closure lid covers at least partially on the discharge body and closes the discharge channel in particular. Said closure cap preferably has at least one actuating element which, when the closure cap is fixed, engages in the gripping element, with the result that, when the closure cap rotates, that part of the discharge body that contains the grip element also rotates. The membrane can thus also be punctured when the closure cap is fixed, by rotating the closure cap with respect to the container. In a particularly preferred embodiment of the invention, the closure cap has an internal thread which can be screwed towards an external thread of the annular part and is defined in such a way that, when the closure cap is to be screwed from the annular part, the part tubular moves axially in the direction of the discharge opening of the container. For this purpose, it is proposed that the second internal thread of the annular part be designed to run in the opposite direction to the external thread of the same part. The external thread is preferably a customary thread of the right hand, with the result that the closing cap can be unscrewed from the annular part by rotating in the left-hand direction. The second internal thread of the annular part, however, is preferably a left hand thread, with the result that, when the closure lid rotates in the left-handed direction, that is, during a unscrewing movement, the tubular part is simultaneously moves in the opposite direction towards the discharge opening of the container, and thus towards the membrane. Two exemplary embodiments of the invention are explained in more detail below with reference to the drawings, in which: Figures 1A-IC show schematic illustrations, in section, of the discharge nozzle assembly and of the container in accordance with a first exemplary embodiment of the invention. Figure ID shows a perspective, partially sectioned illustration of the container assembled with the discharge nozzle and closure cap according to Figures 1A to IC, in which the container is sold. Figures 2A-2C show, in section, the container in accordance with the previous figures as it is first opened by the user. Figure 2D shows a perspective, partially sectioned illustration of the container corresponding to Figure 2B, that is, immediately after the membrane has been perforated. Figure 2E shows a perspective illustration, partially sectioned of the container corresponding to Figure 2D after the membrane has been perforated and during the removal of the closure cap. Figure 3 shows a side view of the container according to the first example embodiment, the closure lid being illustrated in section. Figure 4 shows a detailed illustration of the container according to a second example embodiment, particularly preferred according to the invention. Figure 5 shows a perspective illustration of the second step, carried out by the manufacturer, to assemble the container in accordance with Figure 4, and Figure 6 shows the third step during the assembly of the container according to Figure 4. The same designations have the same meaning in all the drawings and, therefore, will be explained only once, if appropriate. The example embodiment shows a container 2 in the form of a tube for a cyanoacrylate adhesive, which is also known as an instant adhesive. The container 2 has a discharge opening 8 which is closed by a membrane 11 (Figure IC). The discharge nozzle 1 of the container 2 has a discharge body 4, 5 of two parts with a discharge channel 3. The discharge body comprises an annular portion 4 and a tubular portion 5 disposed therein in an axially displaceable manner (Figure 1C). The annular part 4 has a connection element 6 which is configured as an internal thread and is provided for connecting the discharge nozzle 1 to the neck 7 of the container 2, the neck 7 having an external thread 9 corresponding to the internal thread 6, with the result that the annular part 4 can be screwed towards the neck 7 of the container. The tubular part 5, which is arranged inside the annular part 4, has, at its lower end, an element 10 for piercing the membrane 11, the element 10 being of the shape of a lower edge similar to cutter, acute of the part 5 tubular. For axial displacement of the tubular part 5 with respect to the annular part 4, the latter has provided inside it a second internal thread 12, which runs in the opposite direction from the first internal thread 6 and corresponds to a corresponding external thread 13 of the tubular part 5, with the result that the tubular part 5 can be screwed towards the second internal thread 12 of the tubular part 4 through its external thread 13. The rotation of the annular part 4 with respect to the tubular part 5 changes the mutual axial position of these parts, with the result that, with the annular part 4 screwed towards the container 2, the distance of the piercing element 10 from the membrane 11 changes during the rotation of the tubular part 5. The rotation of the tubular part 5 with respect to the annular part 4 is made easier by the protuberances 14, which are fitted as gripping elements on the outside of the annular part 5, in the upper region of the latter. The discharge nozzle i is closed by a closure cap 15 which, inside, has a pin 16 which, with the fixed closure cap 15 (Figure 1C) projects towards the discharge channel 3 and closes the channel of this shape. In addition, the interior of the closure cap 15 is integrally formed on the same protuberances 17, interacting with actuating elements, with the protuberances 14, the fastening elements, on the outside of the tubular part 5. The closure cap 15 has an internal thread 18, by means of which the cap 15 can be screwed onto an external thread 19 of the annular part 4 (FIG. 3). The eternal thread 19 has a horizontal segment 20, with the result that, during the removal of the closing lid 15, the latter is first rotated, slightly more than half a revolution, without axial displacement and the tubular part 5 rotates in the process, that of acute lower edge 10 of the tubular part 5. This situation is also illustrated in Figure 2D. 1 continuous rotation of the closing lid 15 allows the latter to unscrew from the container (Figure 2), with the result that the user obtains the container illustrated in Figure 2C, from which the liquid or pasty product can be taken out. through the exit channel. With the aid of the discharge nozzle 1 corresponding to the invention, the membrane 11 in the discharge opening 8 of the container 2 can be easily opened before the container is used for the first time, by rotating the closing cover 15, without there being any possibility in this case of unintended outward flow of the product accommodated in the container 2, Figures 4 to 6 illustrates a particularly preferred embodiment of the invention. It can be seen in Figure 4 that the external thread 13 of the tubular part 5 is designed as a left hand thread with a larger pitch than the external thread 19 of the tubular part 4, said external thread 19 being provided in the right hand threads with a smaller pitch. The external threads 13 and 19 correspond to the internal thread 12 of the annular part 4 and the internal thread 18 of the closing cover 15.

In order to make the unscrewing action easier, the closure cap 15 has fins 21 that extend outwards. In the illustration according to FIG. 5, the closure cap 15 has been screwed towards the annular part 4. In a further step (FIG. S), the tubular portion 5 is then screwed onto the annular portion 4. In this state, the protuberances 14 of the tubular part 5 pass into the region of the internal protuberances 17 of the closure cap 15. In order that the protrusions 17 of the closure cap 15 hold the protuberances 14 for a sufficient length during the unscrewing of the closure cap, in order to move the tubular portion 5 downwards for the purpose of perforating the membrane, the thread 19 external (right-hand thread) of the tubular part 4 and the corresponding internal thread 18 of the closing lid 15 have a smaller pitch than the external threads 13 of the tubular part 5 and the corresponding internal thread 12 of the annular part 4 . During the unscrewing of the closure cap 15 from the annular portion 4, the closure cap 15 thus moves axially upwards only to a slight degree, while the tubular portion 5 moves downward in the direction of the discharge opening 8 of the container 2 through a considerably greater distance. Once the element 10 has perforated the membrane, the protuberances 14 of the tubular part 5 are disengaged from the protrusions 17 of the closure cap 15, with the result that when the closure cap is unscrewed further, there is no movement of the cap 10. additional screwing of the tubular part 5. For the part illustrated in the upper part of Figure 6, the annular part 4 and the tubular part 5, which is screwed towards the discharge opening 8 of the container 2, can be provided, and is made of the closure cap 15, by the user before unscrewing the closing cap 15 of the annular part 4. In order to make the screwing action easier, the outside of the annular part 4 is grooved.

Claims (8)

1. - A container with a discharge nozzle and a closure cap for the discharge nozzle, the container having an exit opening, which is closed by a membrane, and the discharge nozzle having a discharge body with a discharge channel, as well as a connection element for connecting the discharge body to the discharge opening of the container, an element being provided which can pierce the membrane during or after the connection of the discharge body to the discharge opening of the container and which is designed as part of the discharge body, characterized in that the position of the element for piercing the membrane can be changed axially with respect to the connection element, in which the discharge body has two parts that can be changed in terms of its axial position with respect to one of the another and of which one part contains the element to pierce the membrane and the other part contains the connecting element, in which the other part, which contains the connection element, is essentially annular and the part, which contains the element for piercing the membrane, essentially tubular TS and is arranged essentially concentrically inside the annular part, in which the discharge opening of the container has an external thread to which can be screwed a first internal thread of the annular part, and in which the annular part has a second internal thread, towards which the tubular part can be screwed by means of its external thread.

2. The container according to claim 1, characterized in that the second internal thread of the annular part has a greater pitch than the first internal thread of the same part.

3. The container according to claim 1 or 2, characterized in that the element for perforating the membrane is designed as a sharp edge of the tubular part.

4. The container according to one of claims 1 to 3, characterized in that the outside of the discharge body, and in particular the outside of the tubular part, has at least one gripping element, in particular protrusions in the form of flap, grooves or teeth, so that the axial position of the element for piercing the membrane can be changed with respect to the connection element.

5. The container according to one of the preceding claims, characterized in that in the fixed state, the closure cap at least partially covers the discharge body and closes the discharge channel in particular.

6. The container according to the preceding claim, characterized in that the closing lid has at least one actuating element that, with the closing lid fixed, engages in the fastening element, with the result that when it rotates the closing lid, that part of the discharge body that contains the fastening element also rotates.

7. The container according to the preceding claim, characterized in that the closure cap has an internal thread that can be screwed to an external thread of the annular part and is designed so that, when the closure cap is unscrewed from the annular part, the tubular part moves axially in the direction of the discharge opening of the container.

8. The container according to the preceding claim, characterized in that the second internal thread of the annular part is designed to run in the opposite direction to the external thread of the same part.