Package opening device and package equipped with opening device

Abstract

An opening device (3) for a container with a spout (1) is described. The opening device (3) comprises at least a collar (10) having a spout (11) and a lid (12) configured to selectively close and open the spout (11), and is controllable between a closed position in which the lid (12) is configured to close the spout (11) and an open position in which the lid (12) is configured to open the spout (11). The collar (10) comprises a rim (13) defining the spout (11). The lid (12) is rupturely fixed to the rim (13) by a bonding membrane, and is configured such that when the lid (12) is first operated from the closed position to the open position, the lid (12) detaches from the rim (13) and the bonding membrane breaks. The rim (13) has a first end (19) and a second end (20) opposite the first end (19). The second end (20) has a radial projection (30).

Description

Technical Field

[0001] The present invention relates to an opening device for a package, preferably having a body formed from a multilayer packaging material and containing a pourable product, more specifically a container filled with a pourable food product.

[0002] Advantageously, the present invention also relates to a package having a body formed from a multilayer packaging material, containing a pourable product, more specifically a pourable food product, and provided with an opening device, preferably such a package.

Background Art

[0003] As is well known, many liquid or pourable food products such as fruit juice, UHT (ultra-high temperature sterilized) milk, wine, tomato sauce, etc. are sold in packages made of sterilized packaging materials.

[0004] As a typical example, a rectangular parallelepiped package for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark) can be mentioned. This is made by sealing and folding a laminated laminate packaging material. The packaging material has a multilayer structure in which, for example, both sides of a base layer of carton and / or paper are covered with a heat-sealable plastic material layer such as polyethylene. In the case of a sterile package for long-term storage products, the packaging material further includes a layer of an oxygen barrier material, such as aluminum foil, which is overlaid on the layer of the heat-sealable plastic material and is further covered with another layer of a heat-sealable plastic material forming the inner surface of the package that finally contacts the food.

[0005] Some known packages include an opening device configured to allow a dispenseable product to be dispensed from the package in a controlled manner. Such a package is described, for example, in the European Patent Application EP-A-4001150 by the present applicant. This European Patent Application describes a package comprising a body having a predetermined spout and an opening device positioned around the predetermined spout and configured to allow a dispenseable product to be dispensed in a controlled manner.

[0006] The opening device includes a collar having a spout and a lid that is detachably connected to the collar to selectively open and close the spout.

[0007] The lid is controllable between a closed position and an open position, closing the spout of the collar in the closed position and opening the spout in the open position. Before the lid is first controlled from the closed position to the open position, it is rupturely sealed against the collar. This ensures that the dispensable product is reliably protected from the external environment.

[0008] Therefore, when first operating the lid from the closed position to the open position, the user needs to apply enough force to separate the lid from the collar. [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] While known opening and closing devices function quite well, there is a demand in the industry for further improvements to such devices. [Means for solving the problem]

[0010] Therefore, an object of the present invention is to provide an improved opening device in a simple and low-cost manner for packages having a body formed from a multilayer packaging material and filled with a dispenseable product, and more specifically, a dispenseable food.

[0011] In particular, an object of the present invention is to provide, in a simple and low-cost manner, an improved opening device for a package having a body formed from a multilayer packaging material and filled with a dispensable product, more preferably a dispensable food, and especially an improved opening device for a package in which the separation of the lid and collar is improved during the first operation from the closed position to the open position.

[0012] Furthermore, an object of the present invention is to provide a package having a body formed from a multilayer packaging material, filled with a dispenseable product, preferably a dispenseable food, and preferably equipped with an opening device attached to the body, in a simple and low-cost manner.

[0013] According to the present invention, an opening device as described in an independent claim is provided.

[0014] Further advantageous embodiments of the opening device are provided in their respective dependent claims.

[0015] According to the present invention, a package according to any one of claims 13 to 15 is provided.

[0016] Non-limiting embodiments of the present invention will be described illustratively with reference to the accompanying drawings. [Brief explanation of the drawing]

[0017] [Figure 1] This is a schematic perspective view of a package equipped with an opening device according to the present invention, with some parts removed for clarity. [Figure 2] This is a magnified view of a portion of a package with connected opening devices, with some parts removed for clarity. [Figure 3] Figure 2 is a further enlarged perspective view showing the details of the partially open opening mechanism, with some parts removed for clarity. [Figure 4] Figure 3 is a perspective view of the detailed part with the aperture device open, and some parts have been removed for clarity. [Figure 5]Top view of the detailed parts of FIGS. 3 and 4, with some parts removed for clarity.

Embodiments for Carrying out the Invention

[0018] Reference numeral 1 as a whole indicates a package including the following components: - a body 2 (sealed), preferably formed from a multilayer packaging material; and - an opening device 3 connected to the body 2.

[0019] More specifically, the body 2 may be filled with a pourable product, preferably a pourable food product, such as milk, milk beverage, yogurt, yogurt beverage, wine, juice, fruit - containing beverage, tomato sauce, sugar, salt, etc.

[0020] More specifically, the body 2 has a predetermined pouring opening (not shown for the sake of simplicity) configured to allow the pourable product to flow out of the body 2, and the opening device 3 is arranged around and / or can be arranged around the predetermined pouring opening, and may be configured to cause the pourable product from the body 2 to be poured out in a controlled manner.

[0021] According to some preferred non - limiting embodiments, the body 2 may be obtained from a packaging material having a multilayer structure (not shown for the sake of simplicity), preferably a composite packaging material.

[0022] Preferably, the packaging material may be provided in the form of a web and / or a sheet.

[0023] Preferably, the body 2 is obtained by forming a tube from the packaging material, sealing the tube longitudinally, filling the tube with a pourable product, and then sealing and cutting the tube transversely. In some cases, the packaging material may be sterilized and / or washed before the formation, longitudinal sealing, filling, transverse sealing and cutting of the tube.

[0024] Preferably, the packaging material may comprise at least one layer of fibrous material, such as paper or cardboard, and at least two layers of heat-sealable plastic material (e.g., polyethylene) sandwiching the fibrous material layer. One of these two layers of heat-sealable plastic material may define the inner surface of the body 2 that comes into contact with the dispenseable product.

[0025] Preferably, the packaging material may include a layer of gas- and light-barrier material, such as aluminum foil or ethylene vinyl alcohol (EVOH) film. In particular, this layer is placed between one of the layers of heat-sealable plastic material and the layer of fibrous material. Preferably, the packaging material may also include a further layer of heat-sealable plastic material interposed between the layer of gas- and light-barrier material and the layer of fibrous material.

[0026] According to some non-limiting embodiments, the opening device 3 may be applied to the packaging material before placing the packaging material into a packaging machine for forming, filling, and sealing the body 2 from the packaging material equipped with the opening device 3, or during the process of feeding the packaging material into the packaging machine.

[0027] Alternatively, the opening device 3 may be applied to the packaging material during the process of forming the main body 2 from the packaging material.

[0028] Preferably, the opening device 3 may be applied to the packaging material by a molding process and / or bonding and / or ultrasonic sealing. Preferably, the opening device 3 may be molded into the packaging material.

[0029] Referring to Figure 1, the main body 2 may extend along a longitudinal axis A, a first transverse axis B perpendicular to the longitudinal axis A, and a second transverse axis C perpendicular to the longitudinal axis A and the first transverse axis B. Preferably, the dimension of the package 2 along the longitudinal axis A may be larger than the dimensions along the first transverse axis B and the second transverse axis C.

[0030] Preferably, the main body 2 may be in the shape of a rectangular parallelepiped.

[0031] According to some preferred non-limiting embodiments, the body 2 comprises a first wall portion 4 extending preferably laterally, more preferably perpendicularly, with respect to the main axis A, and the body 2 extends from the first wall portion 4 along the main axis A. Preferably, the first wall portion 4 defines a support surface for the package 1, particularly the main portion 2, and is designed to contact a support such as a shelf when in use, for example, when displayed or stored in a place of sale. In particular, when placed on a support, the first wall portion 4 defines a bottom wall portion.

[0032] Preferably, the main body 2 may further include a side wall 5 (fixedly) connected to the first wall portion 4, and the side wall 5 may extend from the first wall portion 4, preferably along the vertical axis A.

[0033] Preferably, the main body 2 may include a second wall portion 6 that faces the first wall portion 4 and is (fixedly) connected to the side wall 5.

[0034] More specifically, the side wall 5 may be interposed between the first wall portion 4 and the second wall portion 6.

[0035] In particular, when the main body 2 is placed on a support, the second wall portion 6 defines the upper wall portion.

[0036] According to an illustrated non-limiting embodiment, the second wall portion 6 may be provided at an inclination with respect to the first wall portion 4 and / or the longitudinal axis A. For example, the second wall portion 6 may define an inclined upper surface.

[0037] According to an alternative, non-limiting embodiment not shown, the first wall portion 4 and the second wall portion 6 may be parallel to each other.

[0038] According to some non-limiting embodiments, the second wall portion 6 supports the opening device 3. This is preferable because the second wall portion 6 can constitute a predetermined spout.

[0039] Referring to Figures 1 to 5, the opening device 3 is at least, - A collar 10 having a spout 11, wherein the spout 11 is configured to allow a product that can be poured out from the collar 10 (and / or body 2 and / or package 1) to be poured out (in a controlled manner); and - A lid 12 connected to the collar 10 and configured to selectively open and close the spout 11, It must have at least the following:

[0040] More specifically, the lid 12 is controllable between at least a closed position (see Figures 1 and 2) and an open position. In the closed position, the lid 12 is configured to close the spout 11, in particular preventing the outflow of the pourable product through the spout 11. On the other hand, in the open position (see Figures 4 and 5), the lid 12 is configured to open the spout 11, in particular allowing dispensing from the spout 11. The lid 12 is configured to open the spout 11 (i.e., the lid 12 is detached from the spout 11). This is in particular to allow the outflow of the pourable product through the spout 11.

[0041] More specifically, the collar 10 includes a rim 13 (see Figures 3-5) that defines the spout 11.

[0042] Furthermore, the lid 12 is brokenly fixed to the collar 10, preferably the rim 13, especially before the lid 12 is first controlled from the closed position to the open position. In particular, when the lid 12 is brokenly fixed to the collar 10, the lid 12 is connected to the collar 10 by, for example, a breakable bonding membrane. Preferably, the collar 10, the lid 12 and the breakable bonding membrane may be integrally molded. More preferably, the collar 10, the lid 12 and the breakable bonding membrane may be obtained by molding a plastic material.

[0043] Figure 3 shows one step in the process of first controlling the lid 12 from the closed position to the open position.

[0044] More specifically, the lid 12 may include an interaction portion 21 that is detachably fixed to the rim 13, preferably by a bonding film.

[0045] Advantageously, the shape of the interaction portion 21 and / or the bonding film may be (substantially) identical to the shape of the rim 13.

[0046] According to some preferred, non-limiting embodiments, the lid 12 may be irreversibly brokenly fixed to the collar 10, particularly the rim 13. After the lid 12 is initially controlled from the closed position to the open position, it is possible to control the lid 12 again to the closed position to establish contact between the lid 12 and the collar 11, preferably the rim 13, but the lid 12 is not connected to the collar 10.

[0047] More specifically, the binding membrane may be configured to rupture (irreversibly) when the lid 12 is first operated from the closed position to the open position.

[0048] It should be noted that immediately after molding, Package 1 is in its initial configuration with the lid 12 in the closed position. Package 1 is distributed and / or sold to consumers in this initial configuration.

[0049] Therefore, the user is the one who first operates the lid 12 from the closed position to the open position.

[0050] Referring to Figures 1 to 5, the opening device 3 may include a base frame 14 that is connected to or connectable to the main body 2, particularly the second wall portion 6. In particular, the collar 10 extends from the base frame 14.

[0051] Advantageously, the opening / closing device 3 further, - Mooring element 15 for (permanently) mooring and / or connecting the lid 12 to the collar 10 and / or base frame 14 (collar 10 in the particular example shown); and - More preferably, to hold the lid 12 in the open position, and especially to hold it temporarily, a retaining element 16 configured to interact with the mooring element 15 and / or the lid 12, It may be provided.

[0052] Advantageously, the opening device 3 may include a tamper-evident element 17 configured to indicate to the user that the lid 12 has been operated from the closed position to the open position at least once. More specifically, the tamper-evident element 17 is connected to the lid 12 and the collar 10 and / or the base frame 14, and in the particular illustrated example, it is connected to the lid 12 and the collar 10. Furthermore, when the lid 12 is operated from the closed position to the open position for the first time, the tamper-evident element 17 breaks. In the particular illustrated example, the tamper-evident element 17 includes a weakening section 18 configured to break, dividing the tamper-evident element 17 into two parts. According to some other solutions, the weakening section 18 may be attached to the collar 10 and / or the base frame 14, or to the lid 12.

[0053] More specifically, the rim 13 has a first end 19 and a second end 20 facing the first end 19. The first end 19 defines the front region of the rim 13, and the second end 20 may define the rear region of the rim 13.

[0054] Furthermore, at least during the initial control of the lid 12 from the closed position to the open position, the lid 12 is configured to detach from the first end 19 towards the second end 20. In other words, at least when the lid 12 is operated for the first time from the closed position to the open position, the lid 12 first detaches from the first end 19 and then finally from the second end 20.

[0055] Furthermore, the lid 12 is configured to move along the opening axis E, at least during the initial control from the closed position to the open position. The opening axis E preferably extends from the first end 19 to the second end 20.

[0056] Referring to Figures 3 and 4, the collar 10 may have a central axis F. Preferably, the collar 10 may extend from the base frame 14 along the central axis F.

[0057] Preferably, the spout 11 and rim 13 are positioned at the first axial end of the collar 10 with respect to the central axis F.

[0058] According to some preferred, non-limiting embodiments, the collar 10 may define (and / or include) a channel 22 for a dispensable product.

[0059] According to some preferred non-limiting embodiments, the collar 10 and / or rim 13 may be mirror symmetric with respect to a plane of symmetry H1 that includes the central axis F.

[0060] According to the illustrated embodiment, the plane of symmetry H1 may include an aperture axis E.

[0061] In one embodiment not shown, the collar 10 and / or rim 13 may include a central axis F and be mirror symmetric with respect to a further plane of symmetry perpendicular to the plane of symmetry H1.

[0062] Referring to Figures 4 and 5, the second end 20 has a radial projection 30. In one embodiment, the radial projection 30 is a notch and / or recess and / or slot formed in the rim 13 and extending away from the central axis F. In particular, the applicant has observed that the radial projection 30 reduces the detachment force, i.e., the force required to finally and completely separate the lid 12 and the collar 11 from each other, compared to the case of an end having a circular shape. The reduction in detachment force corresponds, for example, to a reduction in deformation of the collar 11 and / or a reduction in the possibility of product scattering.

[0063] Furthermore, the first end 19 may be provided with an auxiliary radial projection 31. In one embodiment, the auxiliary radial projection 31 is a notch and / or recess and / or slot formed in the rim 13 and extending away from the central axis F. In particular, the auxiliary radial projection 31 allows for a reduction in the force required to initially separate the lid 12 and the collar 11 from each other, i.e., the opening force.

[0064] Preferably, the radial projection 30 and the auxiliary radial projection 31 may be configured to extend in opposite directions with respect to the open axis E.

[0065] Preferably, when the lid 12 is first controlled from the closed position to the open position, the lid 12 is first separated from the first end 19, preferably the auxiliary radial projection 31, and finally separated from the second end 20, preferably the radial projection 30.

[0066] According to some preferred non-limiting embodiments, the radial projection 30 may be curved. Preferably, the auxiliary radial projection 31 may also be curved.

[0067] In the illustrated example, the radial projection 30 and the auxiliary radial projection 31 may have (slightly) different shapes.

[0068] In another example not shown, the radial projection 30 and the auxiliary radial projection 31 may have the same shape.

[0069] According to some preferred non-limiting embodiments, the imaginary line L connecting the radial projection 30 and the auxiliary radial projection 31 may intersect the central axis F and / or be parallel to the opening axis E.

[0070] Additionally, or alternatively, the angular difference between the first radial position of the radial projection 30 relative to the central axis F and the second radial position of the auxiliary radial projection 31 relative to the central axis F may be (substantially) equal to 180°.

[0071] According to some preferred non-limiting embodiments, the mooring element 15 may be connected to a part of the collar 10 supporting the second end 20, preferably a radial projection 30.

[0072] Referring to Figures 4 and 5, the rim 13 may comprise a first half 32 including the first end 19 and a second half 33 including the second end 20.

[0073] Preferably, the first half 32 and the second half 33 can be divided by a further plane H2. Preferably, the further plane H2 is perpendicular to the plane of symmetry H1 and includes the central axis F.

[0074] Referring to Figures 4 and 5, the radial projection 30 may extend between the first connecting portion 40 and the second connecting portion 41 of the rim 13, and preferably belongs to the second half 33.

[0075] Preferably, the first connection portion 40 and the second connection portion 41 may define a point where the profile of the rim 13, particularly the curvature with respect to the central axis F, changes.

[0076] According to some preferred non-limiting embodiments, the radial projection 30 may be positioned radially further away from the central axis F than the other parts of the second half 33 (i.e., all other parts of the second half 33 that do not correspond to the radial projection 30).

[0077] More specifically, the first maximum radial distance of the radial projection 30 from the central axis F may be greater than the first auxiliary radial distance of the other part of the second half 33 from the central axis F.

[0078] In particular, the first maximum radial distance should be interpreted by considering the region of the radial projection 30 that is furthest from the central axis F in the radial direction, and by considering the inner surface of the radial projection 30 facing the central axis F.

[0079] Similarly, the first auxiliary radial distance from the central axis F of the other part of the second half 33 is determined by considering the respective inner surfaces of the second half 33, which are different from the radial projections 30.

[0080] According to some preferred non-limiting embodiments, the second maximum radial distance of the auxiliary radial projection 30 from the central axis F may be greater than the second auxiliary radial distance of the other half of the first half 32 from the central axis F.

[0081] In this context, the terms second maximum radial distance and second auxiliary radial distance can be interpreted in the same way as the terms first maximum radial distance and first auxiliary radial distance can be interpreted with respect to the auxiliary radial projection 31 and a portion of the first half 32 distinct from the auxiliary radial projection 31.

[0082] According to some preferred non-limiting embodiments, the radial projection 30 may be interposed between two auxiliary portions 34 of the rim 13, preferably a second half portion 33.

[0083] According to some possible non-limiting embodiments, the first connector 40 may connect one auxiliary part 34 to the radial projection 30, and the second connector 41 may connect another auxiliary part 34 to the radial projection 30.

[0084] Preferably, the first connecting portion 40 and the second connecting portion 41 are convex (especially considering the shape of the first connecting portion 40 and the second connecting portion 41 as viewed from the central axis F), and the auxiliary portion 34 and the radial projection 30 are concave (especially considering the shape of the auxiliary portion 34 and the radial projection 30 as viewed from the central axis F).

[0085] According to some non-limiting embodiments, the radial projection 30 may define a first curvature. Preferably, the radial projection 30 may be described (at least approximately) by an arcuate portion of a first circle, and the first curvature may be defined as the corresponding first radius of the first circle.

[0086] Furthermore, the auxiliary portion 34 may define a second curvature. In one embodiment, each second curvature may be equal to one another. Each auxiliary portion 34 may be described by the arc portion of each second circle, and each second curvature may be defined as the respective second radius of the second circle.

[0087] Furthermore, the first curvature may be different from each of the second curvatures.

[0088] Preferably, the first radius is different from each of the second radii, and more preferably smaller than each of the second radii.

[0089] According to some preferred non-limiting embodiments, the auxiliary radial projection 31 may be interposed between two auxiliary portions 35 of the rim 13, preferably the first half 32.

[0090] Preferably, the auxiliary radial projection 31 may define a third curvature. The auxiliary radial projection 31 may be described (at least approximately) by the arcuate portion of a third circle, and the third curvature may be defined as the respective third radius of each third circle.

[0091] Furthermore, the auxiliary portion 35 may define each of the fourth curvatures. In one embodiment, each of the fourth curvatures may be equal to one another. Each auxiliary portion 35 is described (or at least approximated) by an arc of the fourth circle, and each fourth curvature may be defined as the respective fourth radius of the fourth circle.

[0092] Furthermore, the third curvature may be different from the fourth curvature.

[0093] Preferably, the third radius may be different from the fourth radius, and more preferably, it may be smaller than the fourth radius.

[0094] According to the illustrated non-limiting embodiment, the first radius and the third radius may be (slightly) different from each other.

[0095] In a preferred embodiment, the third radius is smaller than the first radius.

[0096] According to non-limiting embodiments not shown, the first radius and the third radius may be equal to each other.

[0097] Referring to Figures 1 to 5, the lid 12 may include at least a cover portion 36 configured to cover the spout 11 when the lid 12 is in the closed position.

[0098] Preferably, the cover portion 36 is (substantially) planar.

[0099] Furthermore, the lid 12 may be provided with an annular projection 37 protruding from the lid 12, preferably covering the cover portion 36 and protruding into the flow path 22 when the lid 12 is in the closed position. Preferably, the annular projection 37 may be provided with an engaging portion 21.

[0100] Preferably, the annular projection 37 may have a shape that is (substantially) the same as the shape of the rim 13.

[0101] Preferably, the lid 12 may further include a gripping portion 38 projecting particularly laterally from the cover portion 36, preferably configured so that the consumer can grip the gripping portion 38 and control the lid 12 between a closed position and an open position. More preferably, the gripping portion 38 may include ribs to improve the gripping characteristics of the gripping portion 38.

[0102] When using the product, it is necessary to control the lid 12 from the closed position to the open position in order to dispense the product from package 1.

[0103] When the lid 12 is first controlled from the closed position to the open position, the lid 12 is removed from the rim 13. This reduces the force required to remove the radial projection 30 compared to known opening devices.

[0104] When the lid 12 is placed in the new closed position, the lid 12 comes into contact with the rim 13, but it is not connected to the rim 13.

[0105] The advantages of the opening device 3 and / or package 1 according to the present invention are clear from the above description.

[0106] In particular, the radial projection 30 reduces the force required to remove the lid 12 from the rim 13 at the position of the radial projection 30, i.e., the force required for removal. This makes it possible to reduce deformation of, for example, the collar 11.

[0107] Clearly, modifications to the opening device 3 and / or package 1 described herein may be made without departing from the scope of protection as defined in the appended claims.

Claims

1. An opening device (3) for a package (1) filled with a dispenseable product, The opening device (3) comprises at least, A collar (10) having a spout (11), A lid (12) configured to selectively open and close the spout (11) is controllable between a closed position in which the lid (12) is configured to close the spout (11) and an open position in which the lid (12) is configured to open the spout (11). Equipped with, The collar (10) is provided with a rim (13) that defines the spout (11), The lid (12) is detachably fixed to the rim (13) by a bonding film. The lid (12) is configured to detach from the rim (13) and break the bonding membrane when it is first controlled from the closed position to the open position. The rim (13) comprises a first end (19) and a second end (20) facing the first end (19), When the lid (12) is first controlled from the closed position to the open position, the lid (12) separates from the first end (19) first and from the second end (20) last. The second end (20) is provided with a radial projection (30), Opening device (3).

2. The radial projection (30) is a notch and / or recess and / or slot formed in the rim (13) and extending away from the central axis (F) of the collar (10). The opening device (3) according to claim 1.

3. The radial projection (30) is curved. The opening device (3) according to claim 1 or 2.

4. The radial projection (30) is interposed between the two auxiliary portions (34) of the rim (13), The radial projection (30) defines a first curvature, and the auxiliary portion (34) defines a second curvature, and the first curvature is different from the second curvature. An opening device (3) according to any one of claims 1 to 3.

5. The first curvature defines the first radius, and the second curvature defines the second radius. The first radius is smaller than the second radius. The opening device (3) according to claim 4.

6. The aforementioned collar (10) has a central axis (F), The rim (13) comprises a first half (32) including a first end (19) and a second half (33) including a second end (20). The first maximum radial distance from the central axis (F) of the radial projection (30) is greater than the auxiliary radial distance from the central axis (F) of the other part of the second half (33). The opening device (3) according to any one of claims 1 to 5.

7. The collar (10), including the second end (20), further comprises a mooring element (15) for attaching the cover (12), The opening device (3) according to any one of claims 1 to 6.

8. To hold the lid (12) in the open position, the system further comprises the anchoring element (15) and / or a retaining element (16) configured to engage with the lid (12), The opening device (3) according to claim 7.

9. The first end (19) is provided with an auxiliary radial projection (31) that faces the radial projection (30), The opening device (3) according to any one of claims 1 to 8.

10. The imaginary line (L) connecting the radial projection (30) and the auxiliary radial projection (31) intersects the central axis (F), and / or The angular difference between the radial projection (30) and the auxiliary radial projection (31) is substantially equal to 180°, and / or When the lid (12) is first controlled from the closed position to the open position, the lid (12) moves along the opening axis (E), and the opening axis (E) is parallel to the imaginary line (L) connecting the radial projection (30) and the auxiliary radial projection (31) to each other, and / or The auxiliary radial projection (31) is a notch and / or recess and / or slot formed in the rim (13) and extending away from the central axis (F) of the collar (10). The opening device (3) according to claim 9.

11. The rim (13) is mirror-symmetric with respect to the plane of symmetry (H1) that includes the central axis (F). The opening device (3) according to any one of claims 1 to 10.

12. The lid (12) is provided with an interaction portion (21) that is detachably fixed to the rim (13) by the bonding film, The shape of the interaction portion (21) is substantially the same as the shape of the rim (13). The opening device (3) according to any one of claims 1 to 11.

13. The device comprises a main body (2) filled with a dispensable product, and an opening device (3) applied to the main body (2) according to any one of claims 1 to 12. Package (1).

14. The main body (2) is formed from a multilayer packaging material. Package (1) according to claim 13.

15. The opening device (3) is formed on the main body (2). Package (1) according to claim 13 or 14.

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