EA009862B1 - Flat self-opening closure for composite packagings or for container nozzles or bottle necks to be closed by film material - Google Patents

Abstract

The self-opening closure comprises a pouring spout (3), a screw cap (1) and a self-opening cylinder (2) which is disposed inside the pouring spout (3) and can be set rotating by the screw cap (1). The self-opening cylinder (2), on its lower rim and protruding therefrom, comprises three combined piercing and cutting elements (5, 6, 7). These elements are disposed on two opposite positions on the periphery and in a position between the two. The interior of the self-opening cylinder (2) is provided with three nail-type integrally molded elements (9, 10, 11) which are evenly distributed across the periphery and extend towards the center of the cylinder and have a nail shank (12) and a nail head (13). The nail shank (12) and the bottom side of the nail head of every integrally molded element acts as a guide for one of the three cylinder wall segments that are located on the interior of the cap concentrically to the axis of rotation of the cap. The screw cap (1), on is lower rim (25), is connected to a flat retaining element (21) via at least two material bridges (22, 23, 24) that extend non-radially in relation thereto and that are configured as predetermined breaking points. Said retaining element can engage with the flange (20) of the pouring spout (3) in a horizontal position by means of pins.

Description

This invention relates to a flat self-opening closure for composite packaging, as well as to the closures of the neck of bottles and containers covered by film material. In this case, mainly meant packaging for liquids in the form of such composite packaging made of foiled paper in which they are packed, for example, milk, fruit juices, various non-alcoholic beverages, or in general non-food liquids. This closure can also be used for composite packaging in which bulk products such as sugar, cereals, or various chemicals, etc. are stored or packaged. Foil paper is a multilayer material (laminate), for example, made of cardboard or paper, coated with plastic, such as polyethylene and / or aluminum. Typically, the volume of such packages range from 200 ml to 2 liters or more. In another application, the self-opening valve can be mounted on containers covered with foil material, for example, on all types of glass or plastic bottles or similar containers. There are various versions of such plastic closures. They form, if they are intended for composite packaging, mainly a pouring nozzle with a shelf radially protruding from its bottom edge and forming a locking flange on this pouring nozzle. The fitting has an external thread on which a threaded cap can be screwed in as a bolt. Such a self-opening shutter flanges on the composite packaging, for which it has the lower side of its protruding edge, i.e. the bottom of its flange, hermetically welded or glued to the composite packaging. The free passage at the lower end of the nozzle is then closed with paper and a sealing film of the composite package. In the case of a bottle closure, the pouring nozzle, for its part, is put on or wound on the rim of the neck of the bottle and closed with a membrane membrane on its inner side. The fitting has an external thread on which a threaded cap can then be screwed.

A paper reinforced with film or a membrane membrane that passes under a welded or glued fitting must be cut, torn or squeezed to open, so that the passage can be released and liquid or bulk material can be poured out or poured out of the container through the fitting. To do this, a sleeve is located inside the nozzle, which when the screwed screw cap is rotated, it is squeezed axially down and then rotates in the same direction of rotation. The lower edge of the sleeve has one or more piercing or cutting teeth. As a result, due to its axial lowering and subsequent rotation, the sleeve should cut a circle out of the reinforced film of paper or film membrane passing under it.

Traditionally, such self-opening closures consist of a pouring nozzle, which is hermetically mounted on a composite package or on a nozzle for bottles or containers, covered with film material, from a corresponding turning cap, and also from a self-opening sleeve, located inside the pouring nozzle and rotated by a turning cap. The newest designs have a self-opening sleeve with at least one separate combined piercing and cutting member located on the lower edge of the sleeve and away from it. This self-opening sleeve, the pouring nozzle, and the swivel cap are equipped with guides and force elements that interact with each other in such a way that when the rotary cap is first rotated in the opening direction, the self-opening sleeve is pushed axially downwards and then rotates around its axis without axial movement.

However, if the self-opening sleeve has only one separate combined piercing and cutting member, then the sleeve must have a certain length in proportion to its diameter, which should ensure stable axial movement in the pouring nozzle to reliably distort it. This requires an appropriate structural height for the self-opening shutter. In addition, the self-opening sleeve must have a relatively heavy and durable design in order to perceive the reaction forces emanating from one separate piercing and cutting organ. The guarantee of the first opening on such a shutter is most often ensured by the fact that the guarantee ring is molded on the lower edge of the cap through a large number of breakaway bridges, while the guarantee ring is placed on the pouring nozzle during the first installation through the thickening. When you first open the cap, you must simultaneously break a large number of jumpers, which requires a corresponding large effort.

The principal task of this self-opening shutter is to obtain a much flatter and easier execution of the shutter with a reduced structural height, and, despite this, the self-opening sleeve should open the film reliably and without distortions. The production of this self-opening shutter requires less polymer material due to the reduced structural height. In addition, the special performance of this self-opening shutter has a guarantee of first opening, requiring less effort from the consumer, opening this shutter. In addition, this device guarantees the first opening should also be flatter and at the same time easier, i.e. manufactured using less synthetic material.

- 1 009862

This fundamental problem is solved by a flat self-opening shutter for composite packages, as well as for bottle necks and containers covered with film material consisting of a pouring nozzle, which is hermetically mounted on a composite package or bottle neck or container covered with a film material from an appropriate swivel cap, as well as from the self-opening sleeve located inside the pouring nozzle and rotated by the rotary cap, and the self-opening sleeve has less it has at least one separate combined piercing and cutting organ located on the lower edge of the sleeve and spaced from it, and characterized in that the self-opening sleeve has on its inner side nail-shaped protrusions with protrusion legs and protrusion heads directed to the center of the sleeve, with the legs and the lower sides of the lugs of the protrusions are designed as guides for segments in the shape of a cylinder wall located concentrically to the axis of rotation of the cap on the inside of the cap lid, with each segment named It has a beveled edge located at an acute angle to the underside of the cap, and an adjacent pushing edge located vertically to the plane of the cap.

The special execution of the means of guaranteeing the first opening is described in the dependent claims.

In the figures, in various forms, the performance of this self-opening shutter for composite packages has many advantages. With the help of these figures, this self-opening shutter is described in detail below and its functions are explained.

Shown:

FIG. 1: self-opening shutter with its three components in a disassembled state in a perspective view;

FIG. 2: self-opening shutter with its three components in a disassembled state in a perspective view, however, in the form of sections for each component;

FIG. 3: self-opening shutter in the assembled state in a perspective view as a section.

FIG. Figure 1 shows a self-opening shutter with its three components in a disassembled state in a perspective view, with the gaze falling to the top and side of the shutter. The rotary cap 1 is visible from above, the self-opening sleeve 2 is in the middle and the pouring nozzle 3 is below. The rotary cap 1 is made in the form of a threaded cap and has a corresponding internal thread suitable for an external thread 4 on the pouring nozzle 3. Self-opening sleeve 2 as the essential feature has, first of all, three combined piercing and cutting bodies 5-7 located on its lower edge and spaced from it. Two of these piercing and cutting organs, namely 5 and 6, are diametrically opposed to each other, and the third piercing and cutting organ 7 is removed from both organs 5 and 6 at 85-100 ° around the perimeter of the self-opening sleeve and is molded on its lower edge eight.

Further, the self-opening sleeve 2 has on its inner side three evenly placed along the perimeter of the nail-like projections 9, 10, 11 directed to its center with the legs of the protrusion 12 and the caps of the projection 13. The leg 12 and the underside of the corresponding cap 13 of each of these projections 9 -11 act as guides and force elements arranged concentrically to the axis of rotation of the cap on the inside of the cap of the three segments in the form of a cylinder wall, which will be visible on another representation of the cap 1. At the upper edge is a sleeve opener 2 has a slightly protruding bead 14, on the outer side of which recesses 29 are located at certain intervals. On the outer wall of the self-opening sleeve 2, axially located ribs 15-17 are molded. They interact with the corresponding axial ribs 18 and horizontal ribs 19 on the inside of the pouring nozzle, as will be explained later.

A flange 20 is visible on the pouring nozzle 3. On the front side of the flange 20 shown here, i.e. directly on it, the plate 21 lies, fixed on the flange 20 with the help of fingers on its lower side, for which the flange 20 has holes, commensurate with these fingers, into which these fingers are inserted. On this element 21 three thin bridges 22-24 are visible, arranged parallel to each other so that at least the two extreme bridges 22, 24 are certainly not radial to the pouring nozzle 3. Initially, i.e. on the fully assembled valve, these jumpers 22-24 form a solid part with the bottom edge 25 of the cap 1. Self-opening sleeve 2 when the valve is mounted is inserted with the correct rotation position into the pouring nozzle 3, then the cap 1 together with the plate 21 connected with jumpers 22 -24, is mounted on the threads 4 of the pouring nozzle 2, and then the element 21 is pressed with its fingers on its lower side into the holes in the flange 20 of the pouring nozzle.

If you subsequently turn the cap 1 in the unlocking direction, i.e. counterclockwise, if viewed from above, as shown on the upper side of the cap, then thin jumpers 22-24 will be destroyed first. Since these bridges 22-24 are arranged parallel to the pouring nozzle and not all of them are radial, they do not all break simultaneously. First, the jumper 24 will tighten and break, then the middle jumper 23, and finally the jumper 22 breaks. Thanks

- 2,009862 For such a consistent destruction of jumpers 22-24, less effort is required than in the solutions that existed until now that required the simultaneous destruction of a large number of jumpers. Therefore, this design guarantees the first opening is quite feasible and the elderly, and not strong enough people. Alternatively, it is also possible to pre-machine punching of the middle lintel 23, located in this case radially to the fitting, so that in the finished gate it is required to successively destroy by turning the cap 1 only two external jumpers 24 and 22.

FIG. Figure 2 shows a self-opening shutter with its three components disassembled in a perspective view. Here, each of the individual components is represented as a section, namely an axial section. In contrast to FIG. 1, parts of three segments in the form of a wall of a cylinder 26 are visible, concentric to the axis of rotation of the cap on the inside of the cap bottom. All these segments of the wall of the cylinder 26 have a bevel 27 located at an acute angle to the underside of the cap, and an adjacent pushing edge 28 located vertically to the underside (bottom) of the cap. In the assembled gate when the rotary cap 1 is rotated counterclockwise, this bevel 27 acts on the stem 12 of the nail-like protrusion 11 on the inner side of the self-opening sleeve 2. The same applies to the inclined surfaces 27 of the other two segments in the shape of the wall of the cylinder 26. Since the segments are the shape of the wall of the cylinder 26 are arranged in the same way as the nail-like projections 9-11, they cannot deviate inward due to bending. This design with the guides in the form of protrusions 9-11 makes it possible to significantly thinner and, thus, easier execution of wall cylindrical segments 26 than in the existing structures.

Due to the presence of guide ribs on the outer side of the self-opening sleeve 2 and the same on the inside of the pouring nozzle 3, the self-opening sleeve 2 cannot first rotate, but can only move axially down. Therefore, when rotating the rotary cap 1 counterclockwise, when viewed from above, the sleeve moves down and therefore moves axially down in the pouring nozzle 3, while the inclined edges 27 slide along the legs 12 of the nail-shaped protrusions 9-11, until the pushing edges 28 abut in the legs of the projections 12.

In this position, the self-opening sleeve is so displaced axially down that now its upper flange 14 lies below the vertical ribs 18. Horizontal ribs 19 can be traversed by the upper flange 14 of the self-opener bushings 2, as the recesses 29 in this shoulder are opposite the horizontal ribs 19 During this axial pushing down, the bushings of the opener 2, its three piercing and cutting bodies 5-7, pierced the film below the bushings. With further rotation of the cap 1 in the direction of opening, the self-opening sleeve 2 no longer goes down, but rotates only in the horizontal plane. In addition, each of the three piercing and cutting bodies 5-7 cuts counterclockwise around the perimeter of the opening of the pouring nozzle 3 a slit in the film, namely only about 120 °. The screw cap 1 is unscrewed further on the pouring nozzle 3 approximately at this angle of rotation and rises up so that, eventually, the wall cylindrical segments 26 and their pushing edges 28 turn out above the projections 9-11 and the pushing edges 28 no longer turn these protrusions 9-11 and, consequently, the plug of the opener 2. Since the two piercing and cutting bodies 5 and 6 are located at a distance of 180 ° from each other, turning the self-opening sleeve 2 by about 120 ° leaves the section of the film uncut along the perimeter. Nozzle 2. The film folds down in the pouring nozzle exactly around this area that remains intact and remains hanging in the hole without falling into the package.

Finally, FIG. 3 shows an axial section of the assembled valve. Here it is shown how the wall cylindrical segments 26, molded under the lid of the threaded cap 1, interact with the nail-shaped protrusions 9-11, of which only the protrusion 11 can be seen. If the cap 1 is rotated from this position in the unlocking direction, the bevel edge 27 presses on the leg 12 of the adjacent protrusion 11. The self-opening sleeve 2 cannot rotate with the cap and, as a result, is forced to squeeze down, and the piercing and cutting bodies 5-7, of which only the organ 7 is seen here, pierce the film. This movement continues until the rotary cap 1 turns and, at the same time, does not rise so that the vertical surface 28 fits close to the leg 12 of the protrusion 11. Since the self-opening sleeve 2 at the same time moved axially down, now it can rotate in a horizontal plane, and accordingly, with further rotation of the rotary cap 1, it will rotate the vertical pushing edges 28 counterclockwise, when viewed from above, thanks to which the piercing and cutting bodies 7-9 cut out of the punctured film of an almost complete circle, which is deflected downwards in the final phase of rotation.

This self-opening shutter features a particularly flat design. Thanks to the nail-shaped, protruding radially inwards protrusions 9, 10, 11, it is possible to manufacture a particularly light and low self-opening sleeve 2. However, it is securely guided in the axial direction, since the legs 12 and the caps 13 of the nail-like projections 9, 10, 11 act as guides when the pivoting cap 1 with its downwardly directed wall cylindrical segments 26 engages with these protrusions 9, 10, 11. The sleeve of the opening 2 can be so relatively low that its ratio to The height without piercing and cutting organs 5-7 to its internal diameter is only 1: 3, and together with the piercing

- 3 009862 mi and cutting bodies - only 1: 2. The ratio of the total structural height of the assembled valve, including the cap 1, the self-opening sleeve 2 and the pouring nozzle 3 to the internal diameter of the pouring nozzle 3 is only 3: 5. Thereby, a very flat self-opening shutter is created, moreover, requiring a little material, having a small weight, due to the filigree design of the sleeve of the opener 2, and, despite this, is fully operational.

Claims (10)

CLAIM 1. Flat self-opening closure for composite packaging, as well as for bottle necks and containers covered with film material, including a pouring nozzle 3, which is hermetically mounted on the composite packaging or on the neck of a bottle or container covered with film material, a swivel cap 1, and also a sleeve - self-opening 2 located inside the pouring nozzle 3 and rotatable by the rotary cap 1, while the sleeve of the opening 2 has at least one separate puncture piercer and p the cutting body 5, 6, 7, located on the lower edge of the sleeve and spaced from it, characterized in that the self-opening sleeve 2 has nail-shaped projections 9, 10, 11 on its inner side with legs of the projection 12 and protrusion caps 13 directed toward the center bushings, the legs 12 and the lower sides of the heads of the protrusions are guides for segments in the shape of the wall of the cylinder 26 located concentrically to the axis of rotation of the cap on the inner side of the bottom of the cap, each segment forming a bevel 27 located at an acute angle to the lower st Rhone cap and the adjacent edge of the pusher 28 disposed perpendicular to the plane of the cap. 2. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material according to claim 1, characterized in that the swivel cap 1 to create a means of guaranteeing the first opening is connected at its lower edge through at least two radial in relation to it, intended to act as places of a specified breakage of jumper 22, 23, 24 with a flat supporting element 21, which are connected horizontally to the flange 20 with the help of fingers on its underside. 3. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material, according to one of the preceding paragraphs, characterized in that self-opening sleeve 2 has three combined piercing and cutting bodies 5 at its lower edge 5 , 6, 7, located in two diametrically opposite points of the perimeter, as well as at some point between them, and that self-opening sleeve 2 has on its inner side three uniformly distributed around the perimeter, nap The nail-shaped protrusions 9, 10, 11 with the legs of the protrusion 12 and the heads of the protrusion 13 are fastened to the center of the bushing; . 4. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material, according to one of the above points, characterized in that the ratio of the height of the self-opening sleeve 2 without piercing and cutting bodies 5, 6, 7 to its internal diameter is only 1: 3. 5. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material according to one of the aforementioned points, characterized in that nail projections 9, 10, 11 are parts protruding in the radial direction inside the self-opening sleeve 2 and having one leg of the protrusion 12 and sitting on it the cap of the protrusion 13, protruding in all sides for the leg protrusion 12. 6. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material, according to one of the aforementioned points, characterized in that several axially arranged ribs 15-17 that interact with axial edges are formed on the outer wall of the self-opening sleeve 2 ribs 18 on the inner wall of the pouring nozzle 2 and thanks to this they serve to protect against deviation until the self-opening sleeve 2 is moved by the swivel cap 1 to the lowest position in the pouring nozzle Here 3. 7. Flat self-opening shutter for composite packages, as well as for bottle necks and containers covered with film material, according to one of the aforementioned points, characterized in that the ratio of the total height of the assembled shutter, including the swivel cap 1, sleeve opener 2 and pouring nozzle 3, to The internal diameter of the pouring nozzle 3 is only 3: 5. 8. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material, according to one of claims 2-7, characterized in that cap 1 at its bottom edge 25 is molded as a solid part with a flat support element 21 through at least two bridges 22, 24 parallel to each other, connecting the supporting element 21 to the lower edge of the cap 1. - 4 009862 9. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material according to claim 8, characterized in that cap 1 at its lower edge is molded in the form of a single piece with a flat support element 21 through three parallel friend another jumper 22-24, connecting the supporting element 21 with the lower edge of the cap 1, and the average radial jumper 23 is broken. 10. Flat self-opening closure for composite packages, as well as for bottle necks and containers covered with film material, according to one of claims 2-9, characterized in that cap 1 at its bottom edge 25 is molded as a solid part with a flat support element 21 through at least two bridges 22, 24 parallel to each other, connecting the supporting element 21 with the lower edge of the cap 1, and the supporting element 21 has at least one upright finger on its underside that fits to the corresponding opening in the flange 20 a fitting 3.