SI25071A - Cover with container for repeatedly closing of plastic bottles, glass bottles and other containers - Google Patents

Abstract

The invention discloses a lid with a container (1) for repeatedly closing the bottles, bottles and other containers (2) consisting of a lid (10), a crown (20) and a neck (30), wherein, in the interior of the lid there are rod guides (12 ) fitting to the teeth (21) of the inner toothing of the crown (20) having a downward-facing blade (22A, 22B, 22C). In the assembled state, the lid with a container (1) in the central part is a container (1A), which is filled with a filler before use, and sealed with the foil by the lower edge (35) of the neck (30). While opening the cover with the container (1) of the crown (20), it travels downwards and with the knives (22A, 22B, 22C in the predominant part of the volume prevents the foil that closes the door at the bottom (30), while the foil folds down and the filler falls into the container 2).

Description

COVERS WITH A CARTRIDGE FOR MULTIPLE CLOSING OF BOTTLES, BOTTLES AND OTHER VESSELS

The subject of the invention

The subject of the invention is a lid with a container for repeatedly sealing bottles, bottles and other containers, preferably bottles and bottles, in which the filler (eg substance in the form of powder, granules, tablets and other dry, solid or liquid forms) is stored in the container Insert the lid with the container, tightly insulated against external influences, into the liquid in a bottle, bottle or other container on which the lid with the container is placed when opening the lid with the container, ie immediately before use.

The lid of the invention is intended for use primarily in the food, pharmaceutical, chemical, agriculture or other industries. Its solution concept can be used for different sizes of container necks, for different types of thread on containers, and the container volume can be adjusted to the needs.

A technical problem

A technical problem solved by the invention is how to improve the lids with a container for repeatedly sealing bottles, bottles and other containers (hereinafter: containers), where the contents or the filling can be placed in the container, e.g. substance in the form of powder, granules, tablets and other dry, solid or liquid forms, etc. and then sealed. Such a lid with a sealed container containing the filler is then mounted on the neck of the container.

When opening the container container for the first time, puncture the bottom separating the container from and inside the container to the extent that the bottom of the lid is dropped so that the filling from the container falls smoothly, shakes or merges into the liquid in the container, regardless of type and / or filler form (eg large tablets, etc.). Then the container with the same lid can be tightly closed again without the other parts of the lid having to be removed or dealt with before.

Some solutions are designed to obstruct the container lid or restrict the release of larger solid forms (eg tablets) from the container to the container or impede the flow of fluid from the container through the container, while some solutions have the problem of providing sealing or involving several different user movements (rotating the lid to the left and right and / or pushing a portion of the lid in the axial direction of puncturing the bottom of the container) for the user to open the lid, thereby allowing the filling to move from the container to the fluid in the container.

A further technical problem that the present invention solves is how to reduce the possibility of damage to the container sealing elements by the construction of the container lid during the installation of the container with the container already filled and sealed onto the container.

A further technical problem solved by the present invention is how to provide a greater stability of the lid-container arrangement to the container by the construction of the lid, while avoiding the need to increase the neck of the container, using as little reinforcement as possible on the lid with the container, especially in the part , which is placed on and in the throat of the container.

The state of the art

Seven patent applications or patents are granted, namely; EP 2657149A2, US 2011284402A1, US 2012 / 0193249A1, W02008002160, WO 2008017890A1, KR0090014699, and KR 2008002160A2, which, however, solve a technical problem in a substantially different manner from that of the present invention.

Definition of terms used

For the purpose of the description of the present invention, the term " threaded pair " means an internal thread and an associated external thread.

The term "multi-stage thread" means a thread where multiple helixes wind in parallel.

The term "leading flank" means the flank of a tooth that is first in the direction of rotation.

Short description of the pictures

The following is an object of the invention described by the accompanying drawings showing:

Figure 1: cover with container 1 in assembled state, cross section;

Figure 2A: container 2, cross-section;

Figure 2B: container 2, top view;

Figure 3A: cover 10, in cross section; Figure 3B: cover 10, bottom view; Figure 4A: crown 20, in outline; Figure 4B: crown 20, in vertical cross section; Figure 4C: crown 20, top view; Figure 4D: crown 20, bottom view; Figure 5: neck 30, in cross section.

BRIEF DESCRIPTION OF THE INVENTION

The present invention solves the described technical problem by introducing a lid with a container 1 consisting of three parts, namely a lid 10, a crown 20 and a neck 30, as shown in figure 1. As described below, the lid with the container after filling with filler, on the underside tightly closed with foil.

The lid with container 1 of the present invention, then in the assembled state and with the container filled, is fixed to the container 2.

DETAILED DESCRIPTION OF THE INVENTION

Cover 10 is shown in Figures 3 A and 3B. Lid 10 is designed as a classic lid for containers, especially bottles, as well as bottles and other containers that have a round neck. The cover 10 is ribbed on the outside, which provides a better grip for the wearer, on the inside has a thread 11, for attachment to the outer thread 31 of the neck 30. Said threaded pair 11,31 may have one or more helixes, preferably two or three screws. Sealing ring 14 is made at the bottom of cover 10. Such sealing rings are already known in the art, so we do not describe them in more detail.

Inside the lid 10 there are rod guides 12 extending perpendicularly from the inner surface of the upper wall 15 of the lid 10 down, almost to the line L of the lower edge of the base body of the lid 10 (without the sealing ring), ending in a circular outlet 12C, as shown in Fig. 3 A. The rod guides are arranged at an even angular distance on the circle K. In the example shown in Fig. 3B, we have six rod guides 12, and their number may also be larger or smaller, depending on the diameter of the circle K, namely the number z as the diameter of circle K increases and the diameter of circle K decreases.

The side 12A of the bar guide 12, which, while rotating the cover 10 to the right, guides, extends to a circular outlet 12C while the opposite side 12B is undercut in the lower part. As shown in Fig. 3B, the bar guides are evenly curved throughout, with the flap 12A being moved closer to the center of the circle K. The curvature of the bar rails 12 results in an unobstructed positioning of the lid 10 on the door 30, and the displacement of the flap 12A towards the interior ensures increased strength of the guides 12

In the inner surface of the upper wall 15 of lid 10 there is a circular sealing edge 13. Figure 3B shows the arrangement and orientation of the curvature of the bar guides 12, as well as the course of the sealing edge 13.

The crown 20 is substantially tubular in shape and has an upper edge 28 and a lower edge 29. The crown 20 has a saw-toothed tooth formed by the teeth 21. Each tooth 21 of the tooth has a longer oblique flank 21A and a shorter oblique flank 2IB. In the embodiment shown in FIG. 4C, the teeth 21 are arranged such that the longer oblique flank 21A is located to the left of the crown of the tooth 21, viewed in the direction of rotation of the crown 20 from right to left.

The teeth 21 are evenly spaced on a circle substantially coinciding with the K. The number of teeth 21 of the crown 20 is substantially greater than the number of rod guides 12. The number of teeth 21 of the crown 20 may also be a multiple of the number of bar guides 12.

The crown 20 has in the middle of the outer surface an outer multistage thread 23 of the crown 20 that fits into the upper inner multistage thread 32 of the neck 30.

The crown 20 has a rounded convex sealing edge 27 on the outer surface, in the lower part above the line of the lower edge 29, which provides a seal between the crown 20 and the neck 30.

From the lower face of the crown 20, knives 22A, 22B, 22C, which have a sloping and sharpened lower edge 24 and a longer vertical edge 25, extend downwards, and a shorter vertical edge 26 is straight. In the example shown, the crown has three blades 22A, 22B, 22C as shown in Figure 3D. The distance between the blades 22A and 22B and between the blades 22B and 22C is approximately the same and is substantially smaller than the distance between the blades 22A, 22C.

In a preferred embodiment, the separation distance between 22A and (22B and about blades 22B and 22C is approximately 90 ° and the separation distance between blades 22A and 22C is between 150 ° and 180 °.

The neck 30 is made as a tubular one-piece element and consists of an upper part 301 with a larger inner diameter and a lower part 302 with a smaller inner diameter, which is surrounded by a cuff 303 outside in a predominant part.

Due to the change in the inner diameter, an inner seat 34 is formed between the upper part 301 and the lower part 302. After the circumference of the upper part 301, an outer thread 31 is provided in the upper portion, which fits into the inner thread 11 of the lid 10. The threaded pair 11, 31 may have one or more helixes, preferably two or three helixes, the number of which depends on the mean diameter of the threaded pair 11, 31. Under said thread 31, there is a snap circular edge 33 through which, when tightened, the seal ring 14 of the lid 10 is skipped, thereby preventing unscrewing the lid 10 without separating the sealing ring 14 from the rest of the lid 10. Inside the upper portion 301, the upper inner multilevel thread 32 is located in the lower portion, to which the outer multilevel thread of the crown 23 fits.

In the preferred embodiment, the multi-stage thread of the threaded pair 23, 32 has six helixes, the number of which may be larger or smaller, and their number depends on the mean diameter of the threaded pair 23, 32, and in the preferred embodiment, it ranges from 2 to 9. The screws mentioned above of the inner multi-stage thread 32 are narrowed in the upper beginning 32A (FIG. 5) to such an extent that the lower start of the outer multi-stage thread 23 of the crown 20 can be skipped over the start of the thread of the threaded screws 32 to attach to the screws immediately below them.

The lower part 302 of the neck 30 is externally substantially surrounded by a cuff 303 which is closed above and has a sealing edge 38 in the upper surface, and in the cuff 303 an inner thread of the cuff 37 that fits into the thread 2A on the neck of the container 2. to which the cover with container 1 will be mounted. In the lower part, the sleeve 303 extends noticeably conically, and within said conical extension there are teeth of the one-way clutch 39 that prevent the lid from being unscrewed by the container 1 after being screwed once to the thread 2A of the container 2.

The lower edge line 35 of neck 30, in the example shown, runs below the lower edge of the cuff 303, may be aligned with it, or extend beyond it, depending on the shape of the neck of the container to which the lid with the container will be attached and the wishes of the customer regarding volume of container.

Description of assembling the lid with the container

The crown 20, with the blades 22B, 22B, 22C facing downwards, is pushed into the upper part 301 of the neck with the container 30 until the outer thread of the crown 23 engages the upper inner thread 32 in the upper part 301 of the neck with the container 30. In this position, the upper edge 28 crown 20 below upper edge 36 of neck with container 30, outer multistage thread 23 of crown 20 optionally skips the initial threads of inner multistage thread 32 neck with container, crown 20 reaches its lowest position during assembly, with blades 22A, 22B, 22C not reaching the line the lower edge 35 of the neck 30 and are spaced from it by a distance R of at least 1 mm.

As described above, due to the reduced start of the coil thread 32, it is possible to skip the start of the outer multi-stage thread 23 of the crown beyond the start of the coil thread of the coil 32 to sit on the coils immediately below them. In the case described, there are 6 screws and there are as many jump points.

Then the guides 12 of the cover 10 are inserted into the crown 20 and the cover 10 is screwed onto the outer thread 31 of the upper part 301 of the neck 30.

As the guides 12 extend only to the line L of the cover 10 and do not protrude from the cover 10 during installation and are not disturbed afterwards.

Due to the described curvature of the rod guides 12 on the cover 10 and the obliqueness of the teeth 21 of the crown 20, each rod guide 12 with its outer curved surface fits into the corresponding longer oblique side 21A of tooth 21 of the crown 20 so that the undercut side 12B of the bar guide 12 sits in the gap. it is formed by two successive teeth 21.

The joint of the guides 12 of the cover 10 and the tooth 21 of the crown 20 form a one-way clutch. Thus, in the case of the right threaded pair 11, 31, when the lid is rotated to the right, the lid travels downwards, the guides 12 are with the teeth 21 of the crown 20 in grip, so that the crown 20 can also be rotated by rotating the lid 10.

Since the thread direction of the threaded pair 23, 32 is opposite to that of the threaded pair 11.31, in the case described left, therefore, when the cover 10 is screwed, the crown rotates, but due to the opposite thread direction of the threaded pair 23, 32, the thread 23 of the crown skips over the upper inner thread 32 of the neck with the container and the crown does not travel down while the guides 12 slide down the teeth 21 down.

When the lid 10 is screwed in completely, the rod guides 12 are inserted into the ribs 21 of the crown 20 for depth T (Figure 1), the circular sealing edge 13 seals the contact between the lid 10 and the neck 30, and the sealing ring 14 on the lid 10 skips the snap circular edge at container 33.

The container 1 thus assembled, as shown in Figure 1, has, in the central part, a substantially cylindrical cavity representing the container 1A, which is bounded above by the inner surface of the upper wall 15 of the lid 10, below by a surface extending in the lower edge line. 35 is circumferentially circumscribed by the inner cylindrical sheath of the crown 20 and the lower part of the inner cylindrical sheath of the lower part 302 of the neck 30.

The described composite lid with container 1 is prepared for filling with powder, granules, tablets and other solid or liquid forms, followed by sealing of the container container with container 1 with foil (not shown), which is mounted on the lower edge 35 of the neck 30 .

Cover the container with container 1 with a foil, preferably an aluminum foil, such as is used in the food or pharmaceutical industry, which is glued or welded to the bottom edge 34 of the neck 30. Such foils, as well as the procedures for their installation, are known in the art and are therefore known in detail. we do not describe.

The assembled lid with container 1 can be filled and sealed at a location independent of the place of manufacture, as well as the place of assembly on container 2.

Assembled lid with container 1 filled with filler and sealed, then screwed to the outer thread 2A on the neck of the container using an internal thread 37. The sealing edge 38 inside the cuff 303, sealing contact between the lid with the container 1 and the container 2, simultaneously however, the teeth of the one-way clutch 39 in the lower part of the cuff 303 slide over the teeth of the one-way clutch 2B on the container 2, ensuring that there is a seal between the lid with container 1 and container 2 and preventing the later unscrewing of the lid with container 1 from the neck of container 2.

When the lid with container 1 is tightened to the container 2, the lower edge 35 of the neck 30 is approximately in line with the lower edge 2C of the neck of the container 2.

In the embodiment shown in the accompanying figures, the threaded pair 2A, 39 on the right, is also suitable for directional teeth of the directional clutch 2B (Fig. 2B), which allows the teeth of the cuff 39 to slide through the teeth 2B only by rotating the lid with the container 1 to the right , while rotating to the left, the mutual movement of the container 2 and the lid with container 1 is disabled.

The feature of the lid of the container 1 according to the present invention is that the container 1A is inserted into the neck of the container 2, which provides greater structural stability of the container 1A, therefore, additional reinforcements, which would be necessary if the container 1A were completely above the neck containers 2 are not required. As a result, the overall height of the container 2 with the lid with the container 1 according to the present invention is also significantly smaller than it would otherwise be.

Description of opening the lid with the container

Fill the lid with the container 1 filled with filler, sealed and mounted on the container 2 by turning the lid 10 to the left (in the case of right threaded pairs 11, 31 and 2A, 39). The lid 10 unfolds and travels upwards, the rod guides 12 inserted into the ribs 21 of the crown 20, the crown 20 rotates to the left, and the outer multilevel thread 23 of the crown 20 travels down the inner multilevel thread 32 of the neck 30 and with the longer vertical edges of the 25 blades 22A , 22B, 22C cut into the perimeter of the sealing foil (not shown).

When the lid (10) is first opened, the sealing ring (14) is torn off and separated from the lid (10) at the circular edge of the container (33), where it remains.

The threads of the threaded pair 11, 31 and the threaded pair 23, 32, whose direction is opposite to the direction of the threaded pair 11, 31, are different, and the threaded pair 23, 32 is significantly larger than the threaded pair 11, 31. In the embodiment shown this ratio is 1: 3, so, for example, the pitch pair 11, 31 may be 3 mm, the thread pitch pitch 23, 32 in this case 18 mm.

As a consequence of the difference in pitch pairs, it is possible that when the lid 10 is rotated for the whole turn, the lid 10 travels 3 mm upwards, while the crown 20 travels 18 mm downwards and at the same time rotates for a full turn, ie by 360 °.

When opening the lid with container 1 of the present invention, the lid must be rotated in the direction of opening as less than 270 °, preferably by less than 180 °, for the crown to cut the foil over most of the foil range, in a preferred embodiment by an angle of 330 ° to 359 °, more preferably 350 °. While rotating the crown 20, all three blades 22A, 22B, 22C are cut into the foil at the same time, and the crown must rotate so that the longer edge 25 of the first knife 22A does not reach the point where, at the moment of contact of the blades 22A, 22B, 22C with the foil located the longer edge 25 of the last knife 22C, or where the last knife 22C cut into the foil.

The bottom edge line 29 of the crown 20 does not fall below the bottom edge line of the container 35, so the crown 20 does not impede the flow of fluid from the container 2.

Since the lower edge 35 of the neck 30 is approximately in line with the lower edge 2C of the neck of the container 2, the flow of fluid from the vessel (2) does not impede the lower part of the container 1 A.

Therefore, the container lid of the present invention, after cutting the foil, allows the fluid from the container 2 to flow smoothly through the container lid 1.

The cut film, regardless of the shape or size of the filler particles stored in the container 1A (eg large tablets), due to the action of the blades 22A, 22B, 22C, as well as the weight of the filler in the container 1A, is pulled down or bent downwards and the filler falls smoothly into the container 2.

The restriction of movement of the crown 20 down is limited by the seat 34 so that the crown 20 cannot fall through the neck with the container 30. When the crown 20 reaches said seat 34, the rod guides are almost completely removed from the crown 20 and the undercut hips 12B of the bar guides 12 lose traction. with the bevel teeth 21, therefore the rod guides 12 skip over the bevel teeth 21, preventing overloading and consequent breaking of the rod guides 12.

The lid 10 of the present invention further enables the closure of the container 2 to be closed again. The rod guides 12, which are curved rotated towards the center of the lid 10, slide over the oblique teeth 21 of the crown 20 and the crown 20 no longer rotates when closed and opened again. As described above, the rod guides 12 on the inside of the lid 10 are lower than the bottom line L of the lid 10 and are not disturbed during the deposition of the lid 10.

All the elements described, namely cover 10, crown 20 and door 30 are one-piece and made of plastic.

The present invention is described above by way of an exemplary example, which in no way limits the invention itself. Thus, it is obviously possible to use opposite threads, but of course in this case it is necessary to change the direction of all threads, curvature and shape of the rod guides, as well as the obliqueness of the crown teeth and other elements that define the present invention. Various embodiments of the present invention are possible, but will be readily apparent to those skilled in the art.

Claims (16)

Patent claims A lid with a container (1), characterized in that it consists of: of the lid (10), which is ribbed on the outside, has a sealing ring (14) on the lower part, inside, a sealing edge (13) is provided on the upper inner surface of the top wall (15), along the perimeter of the circumference the inner thread (11), from the inner face of the upper wall (15) downward, at least one line, preferably from 3 to 9 rod guides (12), arranged in a uniform manner, extending almost to the line (L) of the lower edge of the base body of the lid (10) angular distances at the circle (K), where they end in a circular outlet (12C), where the flank (12A) of the bar guide (12), which is guide when rotating the cover (10), extends to a circular outlet (12C) while the opposite flank (12B) is undercut in the lower portion and where the rod guides (12A) are evenly curved throughout the height, such that the flank (12A) is moved closer to the center of the circle K; The crown (20), which is essentially tubular in shape and has an upper edge (28) and a lower edge (29), in the upper inner part, the crown (20) has a saw tooth formed by teeth (21) having a longer oblique flank (21A) and shorter oblique flank (2IB), in the middle of the outer surface, the crown (20) has an outer multistage thread (23), in the lower part of the outer surface, above the bottom edge line (29), the sealing edge 27, where the lower faces of the crown (20 ) at least one knife extends downwards, preferably three knives (22A, 22B, 22C) having a sloping and sharpened lower edge (24) and a longer vertical edge (25) and a shorter vertical edge (26) being a level where they are separated from each other. the distance between the blades (22A) and (22B) and between the blades (22B) and (22C) is approximately the same and is substantially smaller than the separation distance between the blades (22A, 22C); a neck (30), substantially tubular in shape, consisting of a larger inner diameter upper part (301) and a smaller inner diameter lower portion (302) enclosed externally by a cuff (303) exterior the upper part (301) in the upper part there is a thread (31), under which is the snap circular edge (33), in the lower part of the interior of the upper part (301) there is a multi-stage thread (32), where the helixes of the inner multi-stage thread (32) ) in the upper beginning (32A) are thinned so that the lower beginning of the outer multi-stage thread (23) of the crown (20) can jump over the thread starters of the threaded screws (32) and settle on the screws immediately below them; at the passage from the upper part (301) to the lower part (302) there is in the interior a seat (34), to which a multi-stage outer thread (23) of the crown (20) is positioned while traveling the crown (20) downwards; inside the cuff (303) there is an inner thread (37) of the cuff (303), above it the sealing edge (38), and under the said inner thread (37) there are teeth of the one-way clutch (39), where the neck (30) has an upper edge (36) and the lower edge (35). Cover with container (1) according to claim 1, characterized in that in the assembled state the line of the upper edge (28) of the crown (20) is below the line of the upper edge (36) of the neck (30) and that in the assembled state the blades (22A, 22B, 22C) are located on the bottom edge (35) of the neck (30) and are spaced from it by a distance R of at least 1 mm. Container (1) cover according to claim 1 or 2, characterized in that in the central part, the container (1 A) is limited above by the inner surface of the upper wall (15) of the cover (10), below by the surface, extending in line with the lower edge (35) of the neck (30) along the circumference of the inner crown of the crown (20) and the lower part of the inner cylindrical jacket of the lower part (302) of the neck (30). Cover with container (1) according to any one of claims 1 to 3, characterized in that the container (1 A) contains a filler, which may be in the form of powder, liquid, tablets and the like, and wherein a surface extending in the line of the lower edge (35) of the neck (30) of the foil that seals the container (1 A). 5. A lid with a container (1) according to any one of claims 1 to 4, characterized in that the threaded pair (11, 31) and the threaded pair (2A, 37) are right and the threaded pair (23, 32) is left and , that the teeth (21) of the inner tooth of the crown (20) are aligned so that when viewed in the direction of rotation of the crown (20) from right to left, the longer oblique flank (21 A) is located to the left of the crown of the tooth (21). 6. A container lid (1) according to claim 5, characterized in that, when viewed from the left-to-right direction of the lid rotation (10), the flank (12A), which is moved closer to the center of the circle K, is located to the right of the circular outlet ( 12C). 7. A lid with a container (1) according to any one of claims 1 to 4, characterized in that the threaded pair (11, 31) and the threaded pair (2A, 37) are left and the threaded pair (23, 32) is right and , that the teeth (21) of the inner tooth of the crown (20) are aligned so that when viewed in the direction of rotation of the crown (20) from left to right, the longer oblique flank (21 A) is located to the right of the crown of the tooth (21). 8. A lid with a container (1) according to claim 7, characterized in that when viewed from the right-to-left direction of the lid (10), the flank (12A), which is moved closer to the center of the circle K, is to the left of the circular outflow (12C). Cap with container (1) according to any one of the preceding claims, characterized in that the thread of the threaded pair (11,31) is two or three-stage and that the thread of the threaded pair (23, 32) is at least two-stage and at most nine-stage, in a preferred embodiment six-speed. Container lid (1) according to any preceding claim, characterized in that the pitch of the threaded pair (23, 32) is substantially larger than the pitch of the threaded pair (11, 31), preferably the pitch of the threaded pair (23, 32) is three times the step threaded pair (11, 31). 11. A lid with a container (1) according to any preceding claim, characterized in that the lid (10), crown (20) and neck (30) are one-piece and made of plastic. Cap with container (1) according to any one of the preceding claims, characterized in that, by means of an internal thread (37), the cuff (303) is screwed onto the thread (2A) of the container (2) such that the teeth of the one-way clutch (39) (303) are skipped over the teeth (2B) of the container (2), after the container (1 A) is inserted into the neck of the vessel (2) and the lower edge (35) of the neck (30) is approximately in line the lower edge (2C) of the neck of the container (2). Container lid (1) according to any one of the preceding claims, characterized in that the filling of the container (1 A) by filling and sealing with foil takes place at a location independent of the location of the assembly of the lid with the container (1) with the filling in a sealed container container (1A) per container (2). Use of a lid with a container (1) as described in any one of claims 1 to 13 and screwed onto a container (2), characterized in that when opened, the lid (10) is rotated in a direction opposite to the direction of the threaded pair ( 11, 31), with the lid (20) traveling upwards and rotating the crown (20) with the rod guides in the direction of the threads of the threaded pair (23, 32) so that the crown (20) travels downwards and with the longer vertical edges (25) of the blades (25). 22A, 22B, 22C) is cut into a foil which is mounted on a surface extending in the line of the lower edge (35) of the neck (30) without leaving the lower edge (29) of the crown (20) below the lower edge (35) neck (30). Use according to claim 14, characterized in that the lid (10) is rotated by less than 270 °, preferably less than 180 °, and that at the same time the crown is rotated such that the longer edge (25) of the first knife (22A) does not reaches the points where, at the moment of contact of the blades (22A, 22B, 22C) with the foil, the longer edge (25) of the last knife (22C) is located, or where the last knife (22C) is cut into the foil. Use according to claim 14 or 15, characterized in that the blades (22A, 22B, 22C) cut the foil over most of the foil circumference, preferably by an angle of 330 ^ 4 ° 359 °, more preferably by an angle of 350 °. (λ