Lid assemblies for packaging materials, lid / spout assemblies for packaging materials, and packaging materials having lid / spout assemblies

Abstract

A lid assembly 5 is described that includes at least a coupling ring 21, a lid 22, and a connection unit 23 that connects the lid 22 to the coupling ring 21. The lid 22 includes a cover wall 30 configured to cover the spout 12, and a sealing ring 32 that projects away from the cover wall 30 and is configured to interact with an annular portion 13 that carries the spout 12 to seal the spout 12. The first sealing ring 32 includes at least a first ring portion 34 and a second ring portion 35. The first ring portion 34 includes a first end 41 spaced apart from the cover wall 30, and the second ring portion 35 includes a second end 42 spaced apart from the cover wall 30. A first distance d1 of the first end 41 from the cover wall 30 along the normal axis N of the cover wall 30 is greater than a second distance d2 of the second end 42 from the cover wall 30 along the normal axis N.

Description

Technical Field

[0001] The present invention relates to a lid assembly for a spout of a packaging material having a sealed body filled with a pourable product, more specifically a food product that can be poured, specifically a packaging material.

[0002] Advantageously, the present invention is for a packaging material having a sealed body filled with a pourable product, more specifically a food product that can be poured, and also relates to a lid / spout assembly having a spout and a lid assembly.

[0003] Advantageously, the present invention also relates to a packaging material having a sealed body filled with a pourable product, more specifically a food product that can be poured, and comprising a lid assembly, specifically a lid / spout assembly.

Background Art

[0004] As is known, many liquid foods or pourable foods such as fruit juice, UHT (Ultra-High-Temperature treated) milk, wine, tomato sauce, etc. are sold in packaging materials made of sterilized packaging materials, specifically sealed packaging materials.

[0005] A typical example is a parallelepiped-shaped packaging material for pourable foods known as Tetra Brick Aseptic (registered trademark), which is created by sealing and folding laminated strip packaging materials. The packaging material has a multi-layer structure having a base layer of carton and / or paper covered on both sides with a heat-seal plastic material layer, such as polyethylene. In the case of an aseptic packaging material for long-term storage products, the packaging material also has a layer of an oxygen barrier material, such as aluminum foil, which is superimposed on a layer of a heat-seal plastic material and finally covered with another layer of a heat-seal plastic material forming the inner surface of the packaging material that contacts the food.

[0006] Some known packaging materials, specifically each sealed body of a packaging material formed from a packaging material, are provided with a designated pouring opening, which allows a pourable product to be poured out of the packaging material. Typically, the designated pouring opening is covered with an isolation membrane, which separates the inside of the packaging material from the external environment and is opened, removed, broken, cut, or perforated before the pourable product first flows out through the designated pouring opening. It is also known to position a lid / spout assembly having a spout and lid assembly around the designated pouring opening on the body. The spout has a pouring outlet that allows the pourable product to flow out of the packaging material in a controlled manner, and the lid assembly allows for selective opening and closing of the pouring outlet.

[0007] The spout includes an annular section that supports the spout.

[0008] The lid assembly comprises a coupling ring positioned around an annular portion, a lid configured to move selectively between a closed configuration and an open configuration, which respectively close and open the spout, and a connecting unit that connects the lid to the coupling ring and defines a hinge axis, and the lid is angularly movable about the hinge axis in order to control the lid between the closed configuration and the open configuration.

[0009] The lid comprises a cover wall portion configured to cover the spout when the lid is in a closed position, and a sealing ring protruding from the upper wall portion and configured to interact with the annular portion to seal the spout when the lid is in a closed position.

[0010] In some situations, the sealing ring may not properly engage with the annular portion during the movement of the lid from the open to the closed position, which has been found to be inconvenient as it impairs the proper sealing of the spout when the lid is in the closed position.

[0011] Therefore, there is a need in this field for a lid assembly that does not involve such inconveniences.

[0012] Specifically, there is a need in this field for a lid assembly that ensures proper sealing of the spout when the lid is in a closed configuration. [Overview of the project] [Problems that the invention aims to solve]

[0013] Therefore, an object of the present invention is to provide an improved lid assembly for a spout of a packaging material, more specifically a packaging material having a sealed body filled with a pourable product, more specifically filled with a pourable food, in a simple, straightforward, and low-cost manner.

[0014] Specifically, one object of the present invention is to provide, in a simple, straightforward, and low-cost manner, an improved lid assembly for a spout of a packaging material, specifically a sealed body filled with a pourable product, more specifically a package filled with a pourable food, the lid assembly which ensures proper sealing of the spout when the lid is in a closed configuration.

[0015] Another object of the present invention is to provide an improved lid / spout assembly for packaging materials, specifically packaging materials having a sealed body filled with a pourable product, more specifically filled with a pourable food, in a simple, straightforward, and low-cost manner.

[0016] Another object of the present invention is to provide an improved lid / spout assembly for packaging materials, specifically packaging materials having a sealed body filled with a pourable product, more specifically filled with a pourable food, in a simple, straightforward, and low-cost manner, which ensures proper sealing of the spout when the lid is in a closed configuration.

[0017] Another object of the present invention is to provide, in a simple, straightforward, and low-cost manner, a packaging material having an improved lid assembly, specifically a lid assembly that ensures proper sealing of the spout when the lid is in a closed configuration, specifically a packaging material having a sealed body filled with a pourable product, more specifically filled with a pourable food. [Means for solving the problem]

[0018] According to the present invention, the lid assembly described in claim 1 is provided.

[0019] Further advantageous embodiments of the lid assembly are provided in claims that are directly or indirectly dependent on claim 1.

[0020] Furthermore, according to the present invention, the lid / spout assembly described in claim 14 is provided.

[0021] Furthermore, according to the present invention, the packaging material described in claim 15 is provided.

[0022] Non-limiting embodiments of the present invention are described by reference to the accompanying drawings. [Brief explanation of the drawing]

[0023] [Figure 1] This is a schematic perspective view of a portion of a packaging material having a lid assembly, in a state in which parts have been removed for clarity, according to the present invention, and which is part of the first configuration. [Figure 2] This is a side view of the lid assembly in Figure 1, in the second configuration, with some parts removed for better visibility. [Figure 3] This is a detailed perspective bottom view of the lid assembly shown in Figure 1, with some parts removed for better visibility. [Figure 4] This is a partial cross-sectional side view of some details of the lid assembly in Figure 1, with some parts removed for better visibility. [Figure 5]An enlarged perspective view of the lid assembly of FIG. 1 in the third configuration with parts removed for better visibility. [Figure 6] A partial cross-sectional side view of some details of the lid assembly of FIG. 1 with parts removed for better visibility.

Best Mode for Carrying Out the Invention

[0024] Number 1 is a packaging material (only partially shown within the scope necessary for understanding the present invention), - A sealed body 2, specifically a sealed carton packaging material, filled with a product that can be poured, specifically a food product that can be poured, and specifically having a designated pouring opening configured to allow the product that can be poured to flow out of the body 2, - A lid / spout assembly 3 coupled to the sealed body 2, having at least a spout 4 disposed around and / or capable of being disposed around the designated pouring opening, and a lid assembly 5 coupled to and / or capable of being coupled to the spout 4, showing the whole packaging material.

[0025] According to some preferred non-limiting embodiments, the body 2 is obtained from a packaging material having a multi-layer structure (not shown, known per se), specifically a composite packaging material.

[0026] Preferably, the packaging material is provided in the form of a web.

[0027] Preferably, the body 2 is obtained by forming a tube from the packaging material, sealing the tube longitudinally, filling the tube with a product that can be poured, and then sealing and cutting the tube transversely.

[0028] Preferably, the packaging material comprises at least one layer of fibrous material, such as paper or corrugated cardboard, and at least two layers of heat-sealable plastic material, such as polyethylene, interposed between the layers of fibrous material. One of these two layers of heat-sealable plastic material defines the inner surface of the body 2 that comes into contact with the product to be poured.

[0029] Preferably, the packaging material also includes layers of gas barrier material and light barrier material, such as aluminum foil or ethylene vinyl alcohol (EVOH) film, which are specifically positioned between one of the heat-seal plastic material layers and the fiber material layer. Preferably, the packaging material also includes another layer of heat-seal plastic material interposed between the gas barrier material and light barrier material layers and the fiber material layer.

[0030] According to a preferred, non-limiting embodiment, the spout 4 is attached to the base packaging material 2 before, during, or after the formation, filling, and sealing of the body 2.

[0031] Alternatively, the spout 4 may be attached to the packaging material before placing the packaging material inside the packaging machine for forming, filling, and sealing the body 2 from the packaging material, or while the packaging material is being advanced into the packaging machine.

[0032] Specifically, the spout 4 is attached to the packaging material or the main body 2 by a molding process and / or adhesive bonding and / or ultrasonic bonding.

[0033] Preferably, the lid assembly 5 is connected to the spout 4 before or after attaching the spout 4 to the main body 2 or packaging material.

[0034] According to some preferred, non-limiting embodiments, the spout 4 and lid assembly 5 are obtained from a polymer material and specifically molded.

[0035] Referring particularly to Figure 1, the main body 2 extends along the vertical axis A, the first horizontal axis B, and the second horizontal axis C. Specifically, the portion of the packaging material 2 extending along the vertical axis A is larger than the portions of the packaging material 2 extending along the first horizontal axis B and the second horizontal axis C.

[0036] Prioritizing this, the main body 2 has a parallelepiped shape.

[0037] According to some preferred, non-limiting embodiments, the body 2 comprises a first wall portion (not shown, known by itself) that is specifically transverse with respect to axis A, and more specifically perpendicular, and the body 2 extends along axis A from the first wall portion. Preferably, the first wall portion defines a support wall of the packaging material 1, specifically the body 2, which is designed to come into contact with a support surface, such as a shelf, when in use, for example, when displayed or stored in a sales location. Specifically, when placed on a support surface, the first wall portion defines a bottom wall portion.

[0038] Preferably, the main body 2 also includes a plurality of side wall portions 6, which are (fixedly) connected to the first wall portion and extend from the first wall portion substantially parallel to axis A.

[0039] Preferably, the main body 2 also includes a second wall portion 7, which is located opposite the first wall portion and is (fixedly) connected to at least some of the lateral wall portions 6. Specifically, the lateral wall portions 6 are interposed between the first wall portion and the second wall portion 7. Specifically, when placed on a support, the second wall portion 7 defines the cover wall portion.

[0040] According to some non-limiting embodiments, the first wall portion and the second wall portion 7 may be parallel to each other.

[0041] According to non-limiting alternative embodiments not shown, the first wall portion and the second wall portion 7 may be inclined relative to each other.

[0042] According to some non-limiting embodiments, the second wall portion 7 carries and / or comprises a designated pouring opening.

[0043] According to some preferred non-limiting embodiments, the packaging material 1, specifically the body 2, comprises an inner space configured to hold and / or containing a pourable product. Specifically, a first wall portion, a lateral wall portion 6, and a second wall portion 7 define the boundaries of the inner space.

[0044] According to a preferred, non-limiting embodiment, the body 2 comprises an isolation membrane (not shown, known by itself) covering a designated pouring opening. Specifically, the isolation membrane separates the internal space from the external environment within the area of ​​the designated pouring opening, specifically at the designated pouring opening. Preferably, the isolation membrane comprises a gas barrier material and a light barrier material, such as aluminum foil or an ethylene vinyl alcohol (EVOH) film.

[0045] Specifically, during initial use (see further details below), the isolation membrane is removed and / or ruptured and / or opened and / or cut and / or perforated at least partially to allow the pourable product to flow out of the inner space and body 2.

[0046] According to a preferred, non-limiting embodiment, the isolation membrane is defined by a portion of the packaging material, specifically, a portion of the packaging material distinct from the layer of fibrous material.

[0047] Referring in particular to Figures 1, 2, 5, and 6, the spout 4 is at least, - A spout 12 configured to allow the product to be poured out of the packaging material 1, - It comprises an annular portion 13 that supports (provides) the spout 12.

[0048] Preferably, the spout 4 also includes a base frame 15 configured to connect and / or connect the spout 4 to the main body 2, specifically to the second wall portion 7, around a designated pouring opening.

[0049] More specifically, the annular portion 13 extends along the longitudinal axis E, specifically parallel to axis A, and carries a spout 12 and an inlet opening for a product that can be poured, the spout 12 being at the first axial end of the annular portion 13 itself, and the inlet opening being at the second axial end of the annular portion 13 itself, opposite to the first axial end.

[0050] Specifically, the annular portion 13 defines the boundary of a flow path 17 for the pourable product that extends between the inlet opening and the spout 12 (and / or includes the flow path 17). When in use, the annular portion 13 is configured to receive the pourable product from the inner space through the inlet opening and for the pourable product to flow out from the spout 15.

[0051] Specifically, the annular portion 13 defines the boundary of the spout 12 and includes an edge portion 18 located at the first axial end.

[0052] Preferably, the annular portion 13 includes an inner surface 19 that defines the boundary of the flow path 17.

[0053] More preferably, the annular portion 13 also includes an outer surface 20 opposite to the inner surface 19.

[0054] Specifically, the annular portion 13 has a cylindrical structure.

[0055] More specifically, the annular portion 13 has an annular cross-sectional shape with respect to a cross-sectional plane perpendicular to the vertical axis E.

[0056] Referring in particular to Figures 1 to 6, the lid assembly 5 is at least - A coupling ring 21 that can be positioned and / or positioned around a portion of the spout 4, specifically around the annular portion 13, - A lid portion 22 configured to selectively open and close the spout, - It includes a connecting unit 23 that connects the lid portion 22 to the connecting ring 21.

[0057] According to some preferred non-limiting embodiments, the connecting unit 23 hinges the lid 22 to the coupling ring 11. Specifically, the lid 22 is capable of angular motion about a hinge axis F, specifically in a direction transverse to the longitudinal axis E, while coupled to the spout 4 defined by the connecting unit 23.

[0058] Referring particularly to Figures 2, 5, and 6, the connecting unit 23 comprises one or more coupling elements 24, two coupling elements in certain non-limiting embodiments (although only one is depicted in the figures), the coupling elements 24 being fixed to a coupling ring 21, protruding therefrom, and coupled to the lid 22. Specifically, the coupling elements 24 are designed to define a hinge axis F and to allow angular movement of the lid 22 about the hinge axis F.

[0059] According to some preferred non-limiting embodiments, the connecting unit 23, specifically the coupling element 24, is coupled to the contact portion 25 of the lid 22. Specifically, the contact portion 25 defines the rear portion of the lid 22, i.e., the contact portion 25 is oriented away from the user, at least when the lid 22 is first moved from a closed configuration to an open configuration.

[0060] In particular, the lid assembly 5 also includes a breakable coupling bridge 26 that connects the coupling ring 21 and the lid 22 to each other. The coupling bridge 26 is designed to break irreversibly when the lid 22 is first controlled from a closed configuration to an open configuration.

[0061] According to some preferred, non-limiting embodiments, the lid assembly 5 comprises an opening mechanism (not shown, known by itself) which is preferably operably coupled to the lid 22 and configured to at least partially open, and / or cut, and / or rupture, and / or remove the isolation membrane while the lid 22 is first controlled from a closed configuration to an open configuration.

[0062] According to some non-limiting embodiments, the opening mechanism comprises a (polymer) cover layer and a connecting member connected to the cover layer and the lid 22, wherein the cover layer is welded and / or connected to the isolation membrane and / or partially defines the isolation membrane. When the lid 22 is first controlled from a closed configuration to an open configuration during use, the angular movement of the lid 22 around the hinge axis F also causes angular movement of the cover layer and the isolation membrane around the hinge axis F.

[0063] Alternatively, the opening mechanism may be in the form of a cutter or strap element, which is connected to and / or welded to the isolation membrane and / or defines the isolation membrane at least partially so that the consumer has to manually remove it from the main body 2.

[0064] According to some preferred non-limiting embodiments, the lid portion 22 is at least - The lid portion 22 is configured to cover and / or cover the spout 12 in order to prevent the product that can be poured from flowing out of the spout 12, in a closed configuration. - The lid 22 is configured to be removed from the spout 12, and / or is controlled to be in an open configuration, in order to allow the product that can be poured to flow out of the spout 12.

[0065] Preferably, the lid portion 22 is movable between at least an operating angular position and a stopping angular position about the hinge axis F, and at these angular positions, the lid portion 22 is controlled to be in a closed configuration and an open configuration, respectively.

[0066] According to some preferred, non-limiting embodiments, the lid 22 comprises a cover wall 30 configured to cover the spout when the lid 22 is in a closed configuration, and a side wall 31 protruding from the cover wall 30 and configured to at least partially surround the annular portion 13 when the lid 22 is in a closed configuration.

[0067] Primarily, the cover wall 30 and the side wall 31 define the boundary of the internal space, which has a (substantially) cylindrical shape. Specifically, the internal space accommodates at least a portion of the annular portion 13 and the flow path 17 when the lid 22 is in a closed configuration.

[0068] Advantageously, the lid portion 22 further comprises a sealing ring 32 which protrudes away from the cover wall portion 30 and is specifically connected to the cover wall portion 30 and is configured to interact with the annular portion 13 to seal the spout 12 when the lid portion 22 is in a closed configuration.

[0069] Specifically, the sealing ring 32 is configured to protrude at least partially into the flow path 17 and engage with the inner surface 19 when the lid 22 is in a closed configuration. In other words, a portion of the cover wall 30 sealed by the sealing ring 32 and the sealing ring 32 itself define an active cap that is partially positioned in the flow path 17 and works together with the spout 12 to seal it when the lid is in a closed configuration.

[0070] It should be noted that the sealing ring 32, together with a portion of the cover wall 30, contributes to sealing the spout 12. In fact, the sealing ring 32 is configured to seal the peripheral portion of the spout 12, specifically the edge 18. Specifically, the sealing ring 32 is configured to abut against the inner surface 19, specifically the edge 18, to prevent any lateral leakage of the product that can be poured.

[0071] Preferably, the sealing ring 32 has an outer surface 33 configured to engage with the inner surface 19 when the lid 22 is in a closed configuration.

[0072] Specifically, the outer diameter of the sealing ring 32 is (substantially) equal to the inner diameter of the annular portion 13, specifically the edge portion 18.

[0073] Specifically, the sealing ring 32 is surrounded at least partially by the side wall portion 31.

[0074] Primarily, the sealing ring 32 is connected to the inner surface 37 of the cover wall 30, and the inner surface 37 faces the flow path 17 when the lid 22 is in a closed configuration.

[0075] Advantageously, the sealing ring 32 comprises at least a first ring portion 34, a second ring portion 35, and specifically one or more intermediate portions 36, two intermediate portions in the particular illustrated case, the intermediate portions connecting the first ring portion 34 and the second ring portion 35 to each other.

[0076] Preferably, the first ring portion 34 has a first contact end 38, the second ring portion 35 has a second contact end 39, and each intermediate ring portion 36 has its own third contact end 40. Specifically, the first contact end 38, the second contact end 39, and especially the third contact end 40 are connected to the cover wall portion 30, specifically the inner surface 37.

[0077] Preferably, the first ring portion 34 further comprises a first end 41 spaced apart from the cover wall portion 30, specifically the inner surface 37, and opposite to the first contact end 38; and the second ring portion 35 further comprises a second end 42 spaced apart from the cover wall portion 30, specifically the inner surface 37, and opposite to the second contact end 39. More preferably, each intermediate ring portion 36 further comprises each third end 43 spaced apart from the cover wall portion 30, specifically the inner surface 37, and opposite to each third contact end 40.

[0078] According to some preferred, non-limiting embodiments, the first ring portion 34 is closer to the contact portion 25 than the second ring portion 35. In other words, the first ring portion 34 is interposed between the contact portion 25 and the second ring portion 35.

[0079] Advantageously, the first distance d1 of the first end portion 41 from the cover wall portion 30, specifically the inner surface 37, along the normal axis N of the cover wall portion 30, specifically the inner surface 37, is greater than the second distance d2 of the second end portion 42 from the cover wall portion 30, specifically the inner surface 37, along the normal axis N.

[0080] It should be noted that, by definition, the normal axis N is perpendicular to the cover wall portion 30, specifically the inner surface 37, and extends from there.

[0081] Preferably, the third distance d3 between each third end 43 and the cover wall 30, specifically the inner surface 37, along the normal axis N, is an intermediate length between the first distance d1 and the second distance d2.

[0082] Preferably, the first end 41 extends into the first plane H1, and the second end 42 extends into the second plane H2 spaced apart from the first plane H1. More preferably, the first plane H1 and the second plane H2 are parallel to each other, specifically parallel to the cover wall 30, specifically parallel to the inner surface 37.

[0083] Prioritizing this, the first plane H1 and the second plane H2 are transverse, specifically perpendicular, to the normal axis N.

[0084] Prioritizing this, the second plane H2 is interposed between the cover wall 30 and the first plane H1.

[0085] Specifically, the distance between the first plane H1 and the cover wall 30 corresponds to the first distance d1, and the distance between the second plane H2 and the cover wall 30 corresponds to the second distance d2.

[0086] According to some preferred non-limiting embodiments, each third end 43 extends into a third plane H3 that intersects the first plane H1 and the second plane H2.

[0087] According to some preferred non-limiting embodiments, the first contact end 38, the second contact end 39, and specifically each third contact end 40 also extend within their respective common planes. Specifically, the inner surface 37 extends within this common plane.

[0088] According to some preferred, non-limiting embodiments, the lid 22 has a central axis G. In particular, the central axis G is parallel to, and more specifically coaxial with, the longitudinal axis E when the lid 22 is in a closed configuration.

[0089] Preferably, the first ring portion 34 extends from a first angular position to a second angular position with respect to the central axis G, and the second ring portion 35 extends from a third angular position to a fourth angular position with respect to the central axis G. More specifically, at least one intermediate ring portion 36 extends from a first angular position to a fourth angular position with respect to the central axis G, and at least another intermediate ring portion 36 extends from a second angular position to a third angular position.

[0090] According to some preferred non-limiting embodiments, the first distance d1 is constant between a first angular position and a second angular position with respect to the central axis G, and / or the second distance d2 is constant between a third angular position and a fourth angular position with respect to the central axis G.

[0091] Prioritizing the third distance d3, each third distance d3 changes continuously between the second and third angular positions, and between the fourth and first angular positions, respectively.

[0092] According to some preferred, non-limiting embodiments, the contact portion 25 extends between a first angular contact position and a second angular contact position with respect to the central axis G. Specifically, the first and second angular contact positions are interposed between the first and second angular positions.

[0093] When in use, the user receives the packaging material 1 with the lid 22 in a closed configuration, which seals the spout 12 and prevents the product that can be poured from coming out of the spout 12. Specifically, the seal is achieved when the cover wall 30 and the sealing ring 32 engage with the annular portion 13, specifically the inner surface 19.

[0094] For dispensing from the spout 12 to be possible, the lid 22 must be controlled from a closed configuration to an open configuration. When the lid 22 is controlled from a closed configuration to an open configuration for the first time, the coupling bridge 26 irreversibly breaks, and the opening mechanism removes, at least partially, and / or opens, and / or cuts, and / or breaks, and / or perforates the isolation membrane.

[0095] Subsequently, the lid portion 22 can be controlled again from the open configuration to the closed configuration. This ensures that the sealing ring 32 is properly positioned relative to the annular portion 13 by the first ring portion 34.

[0096] The advantages of the lid assembly 5 and / or lid / spout assembly 3 and / or packaging material 1 according to the present invention should be clear from the above description.

[0097] Specifically, by dividing the sealing ring 32 into at least a first ring portion 34 and a second ring portion 35, it is ensured that the sealing ring 32 is correctly positioned relative to the annular portion 13 during control from the open configuration to the closed configuration of the lid portion 22. Specifically, it is ensured that the sealing ring 32 enters the flow path 17 at least partially and that the outer surface 33 contacts the inner surface 19.

[0098] It is evident that modifications may be made to the lid assembly 5 and / or lid / spout assembly 3 and / or packaging material 1 described herein without departing from the scope of protection defined in the attached claims.

Claims

1. A lid assembly (5) fitted to connect to the spout (4) of a packaging material (1) filled with a pourable product, wherein at least A coupling ring (21) that can be positioned around a portion of the spout (4), A lid portion (22) configured to selectively open and close the spout (12) of the spout (4), and the lid portion (22) has a central axis (G), The system includes a connecting unit (23) that connects the lid portion (22) to the coupling ring (21), The lid (22) can be controlled to either a closed configuration that covers the spout (12) or an open configuration that opens the spout (12). The lid portion (22) includes a cover wall portion (30) configured to cover the spout (12) when the lid portion (22) is in the closed configuration, The lid portion (22) is equipped with a sealing ring (32), the sealing ring (32) protruding away from the cover wall portion (30), and is configured to interact with the annular portion (13) of the spout (4) to seal the spout (12) when the lid portion (22) is in a closed configuration. The sealing ring (32) comprises at least a first ring portion (34) and a second ring portion (35), The first ring portion (34) has a first end (41) spaced apart from the cover wall portion (30), and the second ring portion (35) has a second end (42) spaced apart from the cover wall portion (30), The first distance (d1) of the first end portion (41) from the cover wall portion (30) along the normal axis (N) of the cover wall portion (30) is greater than the second distance (d2) of the second end portion (42) from the cover wall portion (30) along the normal axis (N). The first end (41) extends into a first plane (H1), and the second end (42) extends into a second plane (H2) spaced apart from the first plane (H1). The first plane (H1) and the second plane (H2) are transverse with respect to the normal axis (N), The first plane (H1) and the second plane (H2) are parallel to each other, The sealing ring (32) includes at least one intermediate ring portion (36) that connects the first ring portion (34) and the second ring portion (35) to each other. The intermediate ring portion (36) has a third end (43) opposite to the cover wall portion (30), The third distance (d3) of the intermediate ring portion (36) from the cover wall portion (30) along the normal axis (N) is smaller than the first distance (d1) and larger than the second distance (d2). The first ring portion (34) extends from a first angular position to a second angular position with respect to the central axis (G), and the second ring portion (35) extends from a third angular position to a fourth angular position with respect to the central axis (G). The at least one intermediate ring portion (36) comprises a first intermediate ring portion (36) and a second intermediate ring portion (36), The first intermediate ring portion (36) extends from the first angular position to the fourth angular position with respect to the central axis (G), and the second intermediate ring portion (36) extends from the second angular position to the third angular position. The first distance (d1) is constant between the first angular position and the second angular position with respect to the central axis (G), and / or the second distance (d2) is constant between the third angular position and the fourth angular position with respect to the central axis (G). Lid assembly.

2. The lid assembly according to claim 1, wherein the second plane (H2) is interposed between the cover wall (30) and the first plane (H1).

3. The first plane (H1) and the second plane (H2) are perpendicular to the normal axis (N). The lid assembly according to claim 1.

4. The lid assembly according to any one of claims 1 to 3, wherein the sealing ring (32) has an outer surface (33) configured to engage with the inner surface (19) of the annular portion (12) when the lid portion (22) is in the closed configuration.

5. The annular portion (13) defines the boundary of the flow path (17) for the product that can be poured. The lid assembly according to any one of claims 1 to 4, wherein the sealing ring (32) protrudes at least partially into the flow path (17) when the lid (22) is in a closed configuration.

6. The connecting unit (23) is in contact with the lid (22) at the contact portion (25) of the lid (22), The contact portion (25) extends between a first angular contact position and a second angular contact position with respect to the central axis (G), The lid assembly according to any one of claims 1 to 5, wherein the first angular contact position and the second angular contact position are interposed between the first angular position and the second angular position.

7. The connecting unit (23) is in contact with the lid portion (25) of the lid portion (22), The lid assembly according to any one of claims 1 to 6, wherein the first ring portion (34) is closer to the contact portion (25) than the second ring portion (35).

8. The connecting unit (23) defines a hinge axis (F), and the lid (22) is capable of angular movement about the hinge axis (F). The lid assembly according to any one of claims 1 to 7, wherein the lid (22) is in the closed configuration and the open configuration, respectively, and is in the operating angle position and the stopped angle position with respect to the hinge axis (F).

9. The lid assembly according to any one of claims 1 to 8, wherein the first ring portion (34) has a first contact end (38), the first contact end (38) is in contact with the cover wall portion (30) and is on the opposite side from the first end (41), and the second ring portion (35) has a second contact end (39) that is in contact with the cover wall portion (30).

10. The lid assembly according to claim 9, wherein the first contact end (38) and the second contact end (39) are set on a common plane.

11. A lid / spout assembly (3) comprising at least a spout (4) having an annular portion (13) and a lid assembly (5) according to any one of claims 1 to 10 coupled to the spout.

12. A pourable product-filled packaging material (1) comprising at least a spout (4) having an annular portion (13) and a lid assembly (5) according to any one of claims 1 to 10, coupled to the spout.

13. A lid assembly (5) fitted to connect to the spout (4) of a packaging material (1) filled with a pourable product, wherein at least A coupling ring (21) that can be positioned around a portion of the spout (4), A lid (22) configured to selectively open and close the spout (12) of the spout (4), The system includes a connecting unit (23) that connects the lid portion (22) to the coupling ring (21), The lid (22) can be controlled to either a closed configuration that covers the spout (12) or an open configuration that opens the spout (12). The lid portion (22) includes a cover wall portion (30) configured to cover the spout (12) when the lid portion (22) is in the closed configuration, The lid portion (22) is equipped with a sealing ring (32), the sealing ring (32) protruding away from the cover wall portion (30), and is configured to interact with the annular portion (13) of the spout (4) to seal the spout (12) when the lid portion (22) is in a closed configuration. The sealing ring (32) comprises at least a first ring portion (34) and a second ring portion (35), The first ring portion (34) has a first end (41) spaced apart from the cover wall portion (30), and the second ring portion (35) has a second end (42) spaced apart from the cover wall portion (30), The first distance (d1) of the first end portion (41) from the cover wall portion (30) along the normal axis (N) of the cover wall portion (30) is greater than the second distance (d2) of the second end portion (42) from the cover wall portion (30) along the normal axis (N). The sealing ring (32) includes at least one intermediate ring portion (36) that connects the first ring portion (34) and the second ring portion (35) to each other. The third distance (d3) of the intermediate ring portion (36) from the cover wall portion (30) along the normal axis (N) is smaller than the first distance (d1) and larger than the second distance (d2). Lid assembly.

14. The first end (41) extends into a first plane (H1), and the second end (42) extends into a second plane (H2) spaced apart from the first plane (H1). The first plane (H1) and the second plane (H2) are transverse with respect to the normal axis (N), The first plane (H1) and the second plane (H2) are parallel to each other. The lid assembly according to claim 13.

15. A pourable product-filled packaging material (1) comprising at least a spout (4) having an annular portion (13) and a lid assembly (5) according to claim 13 or 14, coupled to the spout.

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