Closure cap for a container

Abstract

The invention provides a closure cap for a container. The cap comprises a lateral wall and a transverse wall positioned at one end of the lateral wall, a separation line being provided on the lateral wall to define: a retaining ring configured to retain an anchoring to a neck of the container and extending up to a free edge; a closure element (302) engaged with the neck so as to open or close the container; the separation line extends around an axis and is interrupted circumferentially; the retaining ring comprises a joining portion (305) to which the retaining ring is joined to the closure element; a first connecting band (306) which extends from a first end region of the joining portion to a retaining portion (303), and a second connecting band (307) which extends from a second end region of the joining portion; a tab (308) is interposed between the first connecting band and the second connecting band and projects or is aligned with respect thereto, so that when the closure element is in the open condition and the connecting bands retain the closure element connected to the retaining ring, the tab can rest on the neck.

Description

[0001] This application is a divisional application, whose parent application application number is 202080007740.1 (international application number is PCT / IB2020 / 056686), the application date is July 16, 2020, and the invention title is "A lid for a container, a combination of a lid and a neck of a container, and a method of manufacturing the same". Technical Field

[0002] The present invention relates to a lid for a container, a combination of a sealing cap for a container and a neck of a container, and a related method for manufacturing a lid for a container.

[0003] In particular, the present invention relates to a cap provided with a retaining ring that can be associated with the neck of a container, the cap also being provided with a closure element that remains connected to the retaining ring after opening, and the present invention relates to a combination of a cap and a container neck associated with the container neck. The present invention also relates to a method of manufacturing a cap for a container, wherein the closure element remains connected to the retaining ring after opening.

[0004] The cap, and the combination of cap and neck, is particularly, but not exclusively, suitable for bottles designed to contain liquid substances. Background Technology

[0005] Existing caps for bottles include a cup-shaped body with internal threads designed to engage with external threads on the bottle neck. These caps also feature a safety ring connected to the cup-shaped body via a tear line with multiple destructible elements (e.g., destructible bridges). Upon initial opening of the cap, after the destructible elements break, the cup-shaped body separates from the safety ring along the tear line. The safety ring remains attached to the bottle neck, while the cup-shaped body can be unscrewed by the user, thus separating it from the bottle to access its contents. The cup-shaped body can then be screwed back onto the neck to reseal the bottle.

[0006] Sometimes, after the bottle has been emptied, users intentionally or accidentally throw the cup-shaped body onto the ground, while the bottle, along with its associated safety ring, should be properly disposed of in a trash can. This behavior is clearly undesirable.

[0007] To overcome this drawback, a cap with a retaining ring and a closing element has been proposed, the retaining ring being associated with the neck of the bottle and the closing element being connected to the retaining ring via a hinge.

[0008] The closure element can rotate about the hinge between an open and closed state. In the open state, the user can access the contents of the bottle; in the closed state, the closure element prevents entry into the bottle. The hinge holds the closure element associated with the retaining ring, and thus holds the closure element associated with the bottle, preventing the closure element from being thrown to the ground independently of the bottle.

[0009] However, existing hinged caps have the disadvantage of being quite complex to manufacture. In practice, the hinges are usually manufactured in the same mold that produces the cap, particularly by injection molding or compression molding.

[0010] To produce known types of hinged caps, special molds are required, which differ from those typically used to produce hingeless caps. These molds are more complex than ordinary molds, especially since known types of hinged caps may have undercut portions, necessitating special equipment for removal from the mold.

[0011] Furthermore, known types of hinged caps may have areas with very small thicknesses, which is difficult to achieve because the molten polymer material has difficulty flowing in the part of the mold used to form these areas.

[0012] This increases the cost of producing hinged caps and / or the necessary cycle time to obtain them.

[0013] However, the existing hinged caps have another drawback, which relates to the fact that, in the open state, when the user tilts the bottle to pour out the contents, the retaining ring can easily rotate, causing the closure element attached to it to also fall downwards due to gravity. This allows the closure element to be positioned facing and below the dispensing spout. Therefore, the user is forced to manually lock the cap before tilting the bottle to avoid unwanted splashing or misalignment of the contents and to ensure that the closure element does not interfere with dispensing. Summary of the Invention

[0014] The object of the present invention is to improve known types of lids, particularly lids that include a retaining ring and a closing element, the retaining ring being designed to remain associated with the neck of the container, and the closing element being removably engaged with the neck to allow a user to open or alternatively close the container.

[0015] Another objective is to provide a lid for a container that is provided with a closure element that is connected to a retaining ring, the closure element being able to remain stably locked in place after being opened.

[0016] Another object of the present invention is to improve the production method of known types of caps, particularly caps including a retaining ring and a closing element, the retaining ring being designed to remain associated with the neck of the container, and the closing element being removably engaged with the neck to allow a user to open or alternatively close the container.

[0017] Another object of the present invention is to improve the combination of a known type of lid and neck, particularly wherein the lid includes a retaining ring and a closing element, the retaining ring being designed to remain associated with the neck of the container, and the closing element being removably engaged with the neck to allow a user to open or alternatively close the container.

[0018] According to a first aspect of the invention, there is a lid for a container.

[0019] More specifically, according to a first aspect of the invention, a closure lid for a container includes a sidewall extending about an axis and a lateral edge positioned at one end of the sidewall, a separation line provided on the sidewall to define: a retaining ring configured to retain anchorage to a neck; and a closure element removably engaged with the neck to open or close the container; wherein the separation line extends about the axis, a circumferential separation line is interrupted to maintain the engaged retaining ring and closure element, and wherein the retaining ring includes: a retaining portion configured to engage internally with a locking ring of the neck, and extending to a free edge of the retaining ring; The assembly includes a retaining ring that engages with the closure element at the assembly; a first connecting band that extends from a first end region of the assembly to the retaining portion; and a second connecting band that extends from a second end region of the assembly to the retaining portion, the second end region being circumferentially positioned on the opposite side of the first end region; and a tab inserted between the connecting bands that extends toward a free edge relative to the first and second end regions of the assembly, such that the tab rests on the neck when the closure element is in the open state and the connecting bands hold the closure element connected to the retaining ring.

[0020] According to a second aspect of the invention, a lid is provided for a container.

[0021] In detail, according to this second aspect of the lateral connection, there is a closure cap for a container, the closure cap including a sidewall extending about an axis and a transverse wall positioned at one end of the sidewall, a separation line provided on the sidewall to define a retaining ring configured to retain anchorage to the neck and free edge of the container; a closure element removably engaged with the neck to open or close the container; the separation line extending about the axis and circumferentially interrupted to maintain the engaged retaining ring and closure element; wherein the retaining ring includes: a engagement portion at which the retaining ring engages with the closure element; a first connecting band extending from a first end region of the engagement portion; and a second connecting band extending from a second end region of the engagement portion, the second end region being circumferentially positioned at the first end. On opposite sides of the region; a tab inserted between a first connecting band and a second connecting band, such that when the closure element is in the open state and the connecting bands hold the closure element connected to the retaining ring, the tab can rest on the neck; wherein the tab includes a pair of side edges and a bottom edge, the bottom edge being aligned with a first free lower edge of the first connecting band and a second free lower edge of the second connecting band; and wherein a cutting line is present on the sidewall, extending between the separation line and the free edge of the retaining ring, defining the bottom edge of the tab, the first free lower edge of the first connecting band, and the second free lower edge of the second connecting band, and the cutting line is formed by a cutting line of the sidewall; two cutting lines defining the respective side edges of the tab and made by means of a cut through the entire thickness of the sidewall.

[0022] According to a third aspect of the invention, a combination of a closure cap for a container and a neck of the container is provided, the cap being applied to the neck.

[0023] In detail, according to this aspect of the invention, there is a combination of a closure cap and a neck for a container, wherein the cap includes a sidewall extending about an axis and a transverse wall positioned at one end of the sidewall, a separation line provided on the sidewall to define: a retaining ring configured to retain anchorage to the neck; a closing element removably engaged with the neck to open or close the container; the separation line extends about the axis and is interrupted to maintain the combined retaining ring and closing element; the retaining ring includes: a retaining portion configured to engage internally with a locking ring of the neck and extending to a free edge of the retaining ring; a joining portion at which the retaining ring engages with the closing element; a first connecting band and a second connecting band extending from the joining portion to the retaining portion; and a tab circumferentially inserted into the first connecting band and the second connecting band. Between the connecting bands, the tab extends toward the free edge; wherein the locking ring extends from the outer surface of the neck and extends in a direction parallel to the axis between the upper and lower ends of the dispensing port closer to the neck; and wherein the connecting band is made by a cutting line that extends between the separation line and the free edge and includes a first side extension and a second side extension that partially define the first connecting band and the second connecting band, wherein when the closure element is in the closed state, the first side extension and the second side extension are positioned toward the dispensing port beyond the lower end of the locking ring or positioned at the lower end of the locking ring, such that when the closure element is in the open state and the connecting band keeps the closure element connected to the retaining ring, the tab can rest toward the dispensing port on the neck beyond the upper end of the locking ring.

[0024] According to these three aspects of the invention, the joining portion makes it possible to keep the closure element stably associated with the retaining ring, and thus stably associated with the neck of the container. This prevents the closure element from being discarded separately from the container on the ground. Therefore, this increases the likelihood that the closure element, together with the container, will be properly disposed of with the same type of waste, particularly with plastic waste.

[0025] The tab located in the joint is inserted between and extends from the first end region of the first connecting strip and the second end region of the second connecting strip, or aligned with the first free lower edge of the first connecting strip and the second free lower edge of the second connecting strip, thereby allowing the closure element to be stably locked on the neck of the container, as the bottom edge of the tab rests on the neck and prevents any rotational movement of the closure element toward the closure element and around the neck of the bottle.

[0026] Advantageously, the tab rests on the neck near the locking ring. This locks the closure element in motion toward the dispensing port because the tab interferes with the locking ring, or with the area of ​​the neck near it, and cannot rotate further. Furthermore, due to the friction between the tab and the locking ring that prevents the tab from sliding laterally on the locking ring, the retaining ring is also locked and cannot rotate around the neck.

[0027] Therefore, the enclosed element cannot fall due to gravity.

[0028] The user can only reseal the bottle after disengaging the tab from the locking ring.

[0029] Advantageously, in order to obtain the bottom edge of the connecting strip and the tab, a cut line is formed extending between the separation line and the free edge of the retaining ring.

[0030] Furthermore, to obtain the side edges of the tabs, two cutting lines are formed on the sidewall of the cap, extending parallel to the axis of the cap. Therefore, the cap according to the invention can be produced in a relatively simple manner without the need for special molds. In fact, the cap according to the invention can be produced in a conventional mold that makes it possible to obtain a concave body, and the cutting lines and slits used to create the side and bottom edges of the tabs can be formed as cutting lines by means of a cutting operation on the concave body. The cutting lines can pass through the entire thickness of the sidewall, or if the thickness of the sidewall is only partially cut, the cutting lines may not pass through the entire thickness of the sidewall.

[0031] Preferably, the cutting line and the slit line are made by a through cut for the entire thickness of the sidewall.

[0032] Optionally, there may be destructible elements on the cutting line.

[0033] However, the cutting lines and slits can also be made by molding, which properly shapes the mold in which the cap is produced; however, due to the particularly simple shape of the cutting lines and slits, the mold will not become overly complicated.

[0034] In this case, the cutting line can also be formed into something similar to a fragile line.

[0035] According to the first and third aspects of the invention, in which the tabs extend relative to the connecting band, if the cutting line includes a first side extension, a second side extension, and a central extension, the first and second side extensions being located in a first plane parallel to the separation plane, the separation line being located in the separation plane, and the central extension extending on a second plane parallel to the separation plane and inserted between the first plane and the free edge of the retaining ring.

[0036] The connecting band and the tab are made of a separation line and a cutting line located on three mutually parallel planes. According to the third aspect of the invention, when the closure element is in the closed state, the first and second side extensions of the cutting line are positioned toward the dispensing opening beyond, or at, the lower end of the locking ring. Therefore, when the closure element is in the open state and the connecting band keeps the closure element connected to the retaining ring, the tab can rest on the neck toward the dispensing opening beyond the upper end of the locking ring.

[0037] This allows the tabs to extend beyond the locking ring and rest on the connecting structure of the neck, making the combination between the cap and the neck on which the cap is applied even more stable, the connecting structure being, for example, thread-like in shape.

[0038] According to a second aspect of the invention in which the tab and the connecting band are aligned, the cutting line defines the bottom edge of the tab, the first free lower edge of the first connecting band and the second free lower edge of the second connecting band, and extends in a plane parallel to the separation plane.

[0039] Advantageously, the separation line and the cutting line extend only on two planes that are parallel to each other, which makes it possible to obtain a cap that is stably locked onto the neck of the container in the open state while being easy to manufacture.

[0040] According to the foregoing aspects of the invention, advantageously, the connecting band, the connecting portion, and the tab define a hinge device having a mobility in the axial direction significantly greater than that allowed by the connecting portion alone. This hinge device allows the closure element to move away from the safety ring along a considerable axial distance determined by the combination of the lengths of the connecting band and the connecting portion. Because the tab is inserted between the connecting bands, the closure element can easily disengage from the neck of the container, even if the tab rests on the neck and interferes with the locking ring, due to the ability of the connecting band to move and deform.

[0041] According to one configuration, taking into account the centerline of the joint, the centerline of the tab coincides with the centerline of the joint, and the connecting strip is positioned symmetrically relative to the plane containing the centerline of the axis and the joint.

[0042] The symmetrically shaped tabs inserted between the connecting straps reduce involuntary movement of the closure element, particularly limiting lateral movement, when the cover is open and the closure element is secured against the neck by the locking ring. This prevents the cover from rotating.

[0043] It should also be noted that the protruding tabs or the mating parts aligned with the connecting strip are so robust that it is difficult to accidentally separate the retaining ring from the closing element. Attached Figure Description

[0044] The invention can be better understood and practiced with reference to the accompanying drawings, which illustrate non-limiting exemplary forms of the invention, wherein:

[0045] Figure 1AThis is a side view of a closed lid of a container in a closed state according to a first aspect of the invention, the closed lid being coupled to a neck on which a lid is applied, including a closing element and a retaining ring, wherein the lid includes a first connecting band, a second connecting band, and a tab inserted between the first connecting band and the second connecting band, wherein the tab has an exterior extending relative to the connecting band.

[0046] Figure 1B It is in an open structure. Figure 1A A side view of the lid, wherein the closing element is spaced apart from the neck of the container, and a tab lock rests on the neck, close to the ring used to lock the neck;

[0047] Figure 1C It shows Figure 1B Enlarged image;

[0048] Figure 2 It is in a closed state. Figure 1A A side view in the form of a cover, wherein the tab includes an exterior extending relative to the connecting strip and includes an interior;

[0049] Figure 3 It is in the initial open state. Figure 2 A side view of the lid, wherein the closing element of the lid begins to separate from the retaining ring, and the tab is still partially received in the retaining portion of the retaining ring;

[0050] Figure 4 It is in the final open state. Figure 2 A side view of the lid, wherein the closing element of the lid is almost completely separated from the retaining ring, and the tab is completely detached from the retaining portion;

[0051] Figure 5 It is in an open structure. Figure 2 A side view of the lid, wherein the closing element is spaced apart from the neck of the container, and a tab lock rests on the neck, near the locking ring of the neck;

[0052] Figure 6 This is a side view of the neck of the container, without a corresponding closure.

[0053] Figure 7 yes Figure 6 A perspective view of the neck;

[0054] Figure 8 It is in a closed state according to the third aspect of the invention. Figure 2 A side view of a variant of the lid, which is combined with a neck on which the lid is applied;

[0055] Figure 9 It is in the initial open state. Figure 8A side view of the lid, wherein the closing element of the lid begins to separate from the retaining ring, and the tab is still partially received in the retaining portion of the retaining ring;

[0056] Figure 10 It is in the final open state. Figure 8 A side view of the lid, wherein the closing element of the lid is almost completely separated from the retaining ring, and the tab is completely detached from the retaining portion;

[0057] Figure 11 It is in an open structure. Figure 8 A side view of the lid, wherein the closing element is spaced apart from the neck of the container, and a tab lock rests on the neck, near the locking ring of the neck;

[0058] Figure 12 It is in a closed state according to the second aspect of the invention. Figure 2 A side view of a variant of the cover, wherein the bottom edge of the tab is aligned with the first free lower edge of the first connecting strip and the second free lower edge of the second connecting strip, and the tab has an interior but no exterior;

[0059] Figure 13 It is in an open structure. Figure 12 A side view of the lid, wherein the closing element is spaced apart from the neck of the container, and a tab lock rests on the neck, near the locking ring of the neck;

[0060] Figure 14 It is in a closed state. Figure 1A A side view of a variant of the cover, wherein the tabs have a trapezoidal shape;

[0061] Figure 15 It is in a closed state. Figure 1A A side view of a variant of the cover, wherein the tabs have a rectangular shape with rounded corners;

[0062] Figure 16 It is a cross-section of the cutting unit used to manufacture the cover shown in the foregoing figure, the cover having a separation line, a cutting line and a slit line.

[0063] Figure 17 Enlarged details of the cover shown in the aforementioned figures are illustrated. Detailed Implementation

[0064] Referring to the accompanying drawings, reference numeral 1 indicates a closure for sealing container 2, wherein only the neck 201 of the container is shown, which is specifically designed to contain liquid substances (e.g., beverages).

[0065] It should be noted that elements common to different embodiments will be indicated by the same reference numerals.

[0066] The closure 1 is made of a polymer material. Any polymer material designed for molding can be used to obtain the closure 1.

[0067] Figure 1A The shown sealing cap 1 is in a closed state, wherein the sealing cap 1 is positioned when it leaves the cap production line, and the sealing cap is applied to the neck 201 of the container 2 and engages with the neck.

[0068] In this case, the cover 1 includes a sidewall 3 extending around axis Z, and a transverse wall 4 located at one end of the sidewall 3 to close that end. The transverse wall 4 extends transversely to, and in particular perpendicularly to, axis Z. The transverse wall 4 can be flat, although other shapes are theoretically possible. In the example shown, the transverse wall 4 has a substantially circular shape in the plan view.

[0069] The side wall 3 and the transverse wall 4 define a cup-shaped body, which is designed to receive the end of the neck 201 of the container 2, so that the closure 1 can close the container 2.

[0070] More specifically, the sidewall 3 is connected to the transverse wall 4 via a connection area 401, which can be shaped in cross-section as a beveled edge or a circular connector.

[0071] The closure 1 includes a separation line 5 disposed on the sidewall 3 to define a retaining ring 301 configured to remain anchored to the neck 201 of the container 2.

[0072] More specifically, retaining ring 301 is configured to engage internally with locking ring 202, which extends from the outer surface of neck 201, in order to maintain anchorage to neck 201.

[0073] The locking ring 202 is an enlarged annular portion that extends in a plane positioned transversely to the axis Z.

[0074] The separation line 5 on the sidewall 3, in addition to the retaining ring 301, defines a closure element 302 that is removably engaged with the neck 201 to open or close the container 2. The closure element 302 can be engaged to close the dispensing port 203 of the container 2. The separation line 5 extends about the axis Z and is circumferentially interrupted to maintain the retaining ring 301 and the closure element 302 engaged together. More specifically, the separation line 5 extends between the first end 501 and the second end 502.

[0075] The separation line 5 may have an angular extension range of greater than or equal to 240° and less than or equal to 350° around the axis Z.

[0076] In one form, the angular extension range of the separating line 5 can be between 250° and 340°, preferably between 320° and 330°.

[0077] It should be noted that the statement “the angle extends between 250° and 340°” throughout this document means that it can be greater than or equal to 250° and less than or equal to 340°. In other words, the endpoints of the indicated range are always included and not excluded.

[0078] The retaining ring 301 includes a retaining portion 303 configured to engage internally with the locking ring 202 and extend upward to the free edge 304 of the retaining ring 301.

[0079] The free edge 304 defines a retaining ring 301 on the side opposite to the transverse wall 4. The retaining ring 301 thus extends between the separation line 5 and the free edge 304, and may be defined by a cylindrical or truncated conical outer surface. Preferably, the separation line 5 is parallel to the free edge 304.

[0080] In other words, when the cap is attached to the container 2 and configured to hold the retaining ring 301 anchored to the neck 201 of the container 2, the retaining portion 303 is the lower part of the retaining ring 301, and therefore the lower part of the closed cap 1.

[0081] The retaining ring 301 also includes:

[0082] - The coupling portion 305, where the retaining ring 301 is coupled to the closing element;

[0083] - A first connecting band 306 and a second connecting band 307, which extend from the joining portion 305 to the retaining portion 303.

[0084] More specifically, a first connecting band 306 and a second connecting band 307 extend from end regions 305a and 305b circumferentially opposite to the joining portion 305 to the retaining portion 303. The first connecting band 306 extends from the first end region 305a of the joining portion 305 to the retaining portion 303, and the second connecting band 307 extends from the second end region 305b of the joining portion 305 to the retaining portion 303, the second end region 305b being circumferentially opposite to the first end region 305a.

[0085] If we consider the first end 501 and the second end 502 of the separation line 5, the first end region 305a and the second end region 305b of the joining portion 305 are adjacent to the first end 501 and the second end 502 respectively, and are therefore circumferentially positioned on opposite sides in the joining portion 305.

[0086] Therefore, the first connecting strip 306 and the second connecting strip 307 are circumferentially positioned on opposite sides in the joining portion 305.

[0087] The retaining ring 301 includes a tab 308.

[0088] The tab 308 is circumferentially inserted between the first connecting band 306 and the second connecting band 307 and extends toward the free edge 304, such that when the container 2 is in the open state and the first connecting band 306 and the second connecting band 307 keep the closing element 302 connected to the retaining ring 301, the tab 308 can rest on the neck 201 of the container 1.

[0089] More specifically, the tab 308 is inserted between the connecting strips 306 and 307, and extends toward the free edge 304 relative to the first end region 305a and the second end region 305b of the connecting portion 305.

[0090] The tab 308 rests on the neck 201 and is used to lock the closure element 302 spaced apart from the neck.

[0091] It should be noted that the tab 308 is specifically made to be external 308a, which extends relative to the first end region 305a and the second end region 305b.

[0092] like Figure 1A As shown, the separation line 5 is positioned along an axis parallel to the Z-axis at a distance D1 from the free edge 304 of the retaining ring 301. Therefore, the height of the retaining ring 301 along the axis parallel to the Z-axis is equal to D1.

[0093] The distance D1 is less than or equal to 6.5 mm. Preferably, the distance D1 is less than or equal to 5 mm.

[0094] The distance D1 is greater than or equal to 2 mm. Preferably, the distance D1 is greater than or equal to 3 mm.

[0095] In a preferred embodiment, the distance D1 is between 3 mm and 5 mm.

[0096] It should be noted that the term H represents the height of the tab 308 along the axis parallel to axis Z when the closing element 302 is in the closed state, H1 represents the height of the connecting strips 306 and 307, and D2 represents the height of the retaining part 303.

[0097] exist Figure 1B and Figure 1C In the open state shown, due to the connecting straps 306 and 307 connected to the connecting portion 305, the closing element 302 is able to rotate about the connecting portion 305 relative to the neck 201 of the container 2. This defines the hinge strap in such a way that the closing element 302 remains connected relative to the neck 201 and thus deforms.

[0098] In other words, such as Figure 1B and Figure 1C As shown, after disengaging from the neck 201, the closing element 302 rotates around the connecting portion 305.

[0099] It should be noted that the connecting portion 305, the first connecting band 306, the second connecting band 307, and the tab 308 are combined together and define a hinge device having a movement capability in the axial direction that is significantly greater than the movement capability allowed by the connecting portion 305 alone, as described in more detail below.

[0100] The hinge device is part of the retaining ring 301, which is inserted between the retaining portion 303 of the retaining ring 301 and the closing element 302.

[0101] It should be noted that when the tab 308 is placed on the neck 201, the bottom edge 309 of the tab 308 faces the dispensing port 203 of the container 2.

[0102] The tab 308 is actually connected to the side wall 3 via a hinge line 310, and the tab 308 can optionally be bent around the hinge line so as to rest on the neck 201 close to the locking ring 202.

[0103] It should be noted that the hinge line 310 is a virtual line in the sidewall 3 that defines an area around which the tab 308 may optionally be bent. This area may also be part of the height H of the hinge band of the connecting portion 305 relative to the tab 308, or positioned closer to the free edge 304, or also on the sidewall 3, as described in more detail below.

[0104] The bottom edge 309 is the free edge of the tab 308, which is positioned on the opposite side relative to the hinge line 310.

[0105] To enable the rotation of the engaging portion 305 when the closing element 302 changes from a closed state to an open state, such as Figure 1B and Figure 1C As shown, the connecting strips 306 and 307 are subjected to twisting, which affects at least a portion of the height H1 of each connecting strip 306, 307.

[0106] Because of the fact that the tab 308 extends relative to the first end region 305a and the second end region 305b, the bottom edge 309 is able to intercept the neck 201 of the container 2 without being disturbed by the first connecting strip 306 and the second connecting strip 307 that remain retracted relative to it.

[0107] Even if the user accidentally bumps the closure element 302 and presses the first connecting strap 306 and the second connecting strap 307, the closure element 302 remains locked and spaced apart from the neck 201, and cannot move toward the neck, because the tab 308 is locked by rotating the neck 201 toward the bottom of the container.

[0108] When the closure element 302 is in the open state, the opening angle between the closure element 302, which is positioned spaced apart from the neck 201, and the axis parallel to the axis Z and tangent to the side surface of the neck 201, is limited to at least 30°. This ensures that the closure element 302 does not interfere with the dispensing of the contents of the bottle when it is tilted.

[0109] The closure element 302 is positioned at an angle, and the shape of the locking ring 202 and / or retaining ring 301 and / or tab 308 can help determine the angle of inclination of the closure element 302, as described in more detail below.

[0110] If we now consider the plane passing through axis Z, the joint portion 305 has a substantially constant thickness S in the plane containing the separation line 5. In fact, there is no need for a lightened or specially shaped sidewall region of the closure cover 1 to form the joint portion 305.

[0111] In fact, such as Figure 17 As shown, each connecting strip 306, 307 may have a radial thickness S, that is, a thickness measured radially relative to the axis Z, which is greater than or equal to 0.35 mm. This thickness may be less than or equal to 1.8 mm.

[0112] In one configuration, the radial thickness S of each connecting strip 306, 307 can be greater than or equal to 0.5 mm. This thickness can be less than or equal to 1.2 mm.

[0113] The radial thickness S of the connecting strips 29 and 30 can preferably be constant in the direction parallel to the axis Z.

[0114] Alternatively, the radial thickness S of the connecting strips 306 and 307 can vary in a direction parallel to the axis Z. In particular, the radial thickness S of the connecting strips 306 and 307 can vary along a direction parallel to the axis Z, thus remaining within the aforementioned range.

[0115] In one configuration, the relatively large radial thickness S of the connecting strips 306 and 307 corresponds to the relatively small height H1 of the connecting strips 306 and 307, and vice versa.

[0116] However, it is also possible to combine the relatively large radial thickness S of the connecting strips 306 and 307 with the relatively large height H1.

[0117] Also considering the plane passing through axis Z, it can be noted that locking ring 202 ( Figure 6 It has a triangular cross-section and an upper wall 202a facing the dispensing port 203, which is inclined relative to the bottom wall of the locking ring 202 facing the bottom of the container 2. In other words, the locking ring 202 has a truncated cone-shaped upper wall 202a.

[0118] The cylindrical wall (not shown) of the locking ring 202 can be inserted between the upper wall 202a and the bottom wall.

[0119] However, other geometries for the locking ring 202 are also possible.

[0120] like Figure 6 As shown, an angle α of 50° is defined between the axis parallel to the axis Z and passing through the outer edge of the locking ring 202 and the upper wall 202a.

[0121] The tilt angle of the closing element 302 in the open state can depend on:

[0122] - The height H of the tab 308 along the axis parallel to axis Z, that is, the distance between the bottom edge 309 and the hinge line 310;

[0123] - The shape of retaining ring 301 and the shape of retaining portion 303, that is, the height D2 of retaining portion 303 along an axis parallel to axis Z;

[0124] - The tilt angle α of the locking ring 202;

[0125] - The lateral extension of the locking ring 202, that is, half the difference between the diameter of the locking ring 202 and the diameter of the outer surface of the neck 201 directly above the locking ring 202.

[0126] In addition to the geometric factors mentioned above, experiments have shown that for Figure 1A , Figure 1B , Figure 1C , Figure 14 and Figure 15 The inclination of the closed cover 1, the closed element 302 in the open state, and thus the stability of the closed element locked on the neck 201 are also determined by the ratio between the height H1 of the connecting straps 306, 307 and the radial thickness S of the connecting straps 306, 307. As described in more detail below, the connecting straps are deformable to ensure optimal connection between the neck 201 and the connecting portion 305 (and, if necessary, between the neck 201 and the connecting straps 306, 307), thereby reliably and securely holding the closed element in the open position.

[0127] The separation line 5 extends in a plane that is transverse to, and in particular perpendicular to, the axis Z. It should be noted that the retaining ring 301 and the closing element 302 are positioned on opposite sides of the separation line 5.

[0128] The side wall 3 of the sealing cap 1 is provided with a connecting structure (not shown) inside, which is configured to removably connect the sealing element 302 to the neck 201 of the container 2, so that the sealing cap 1 can move from a closed state to an open state. In the closed state, the sealing cap 1 closes the dispensing port 203 of the container 2.

[0129] The connecting structure of the closure 1 is located inside the closure element 302 and is shaped to engage with a corresponding connecting structure 204 located outside the neck 201 of the container 2. As shown in the figures, the connecting structure of the closure element 302 and the connecting structure 204 of the neck 201 are threaded. In this case, the movement from the closed state to the open state is performed by the rotation of the closure element 302 relative to the neck 201 of the container 2.

[0130] Advantageously, the tab 308 rests on the neck 201 near the locking ring 202. In fact, the angle of inclination of the closure element 302 relative to the neck 201 is determined by the shape of the retaining ring 301 and / or the locking ring 202 and / or the tab 308, which in turn determines the resting of the tab 308 on the neck 201.

[0131] The tab 308 can be placed on the neck 201 at different positions on the neck. For example, the tab 308 can place:

[0132] - On the locking ring 202, because the locking ring 202 can define the lower contact element for the tab 308;

[0133] - In the outer region of the neck 201 between the locking ring 202 and the lower thread of the connecting structure 204;

[0134] - On the connection structure 204;

[0135] - In another outer region of the neck 201, located directly below the bottom wall of the locking ring 202, the locking ring 202 can form an upper contact element for the tab 308.

[0136] It should be noted that the sidewall 3 may have a plurality of embossed lines 312 on the opposite outer surface, which extend parallel to the axis Z and are designed to facilitate the gripping of the closure cap 1 by the user or by a capping machine that applies the closure cap 1 to the container 2 to be closed.

[0137] The embossed line 312 can be positioned in the closing element 302, but it can also be in the connecting area 401 and / or continued in the retaining ring 301.

[0138] In the example shown, it should be noted that the sidewall 3 includes a cylindrical portion extending to a connecting region 401 on which the embossed line 312 is formed, a wide portion extending to a free edge 304 of a retaining ring 301, and a connecting portion located between the cylindrical portion and the wide portion. The diameter of the wide portion is larger than the diameter of the cylindrical portion. The wide portion may be defined by a smooth outer surface, i.e., it may not have the embossed line 312, but this is not necessary, as the embossed line 312 may also extend on the wide portion. The closure element 302 is defined by the cylindrical portion, and the retaining ring 301 is formed by the wide portion because the separation line 5 is provided on the connecting portion. However, other configurations of the closure cover 1 are also possible regarding the position of the separation line 5 and the extension of the embossed line 312.

[0139] For example, the separation line 5 can be located on the cylindrical portion.

[0140] Along the separation line 5, there can be multiple destructible bridges 503, at least in Figure 12 , Figure 14 and Figure 15 As shown, it connects the retaining ring 301 to the closing element 302. The destructible bridge 503 is designed to break when the closing cover 1 is first moved to the open position, signaling that the container is no longer intact. In this way, the closing element 302 separates from the retaining ring 301 along the separation line 5.

[0141] As described above, the retaining ring 301 is configured to engage internally with the locking ring 202 in order to retain anchorage to the neck 201.

[0142] Therefore, the retaining ring 301 has an internal engagement element 313, such as... Figure 4 and Figure 17 As shown, the engaging element is designed to engage with the locking ring 202. The engaging element 313 is configured to contact and abut the locking ring 202 to prevent axial movement of the retaining ring 301 away from the neck when the closure element is removed from the neck 201.

[0143] More specifically, it is the retaining portion 303 of the retaining ring 301 that is provided with an engaging element 313 so that even when... Figure 1B and Figure 1C The shown closure element 302 remains anchored to the locking ring 202 when it is in the open state and spaced apart from the neck 201 and the dispensing port 203, and when locked.

[0144] The engaging element 313 is shaped like a ring-shaped element, which folds inward toward the retaining portion 303 around the free edge 304. More specifically, the ring-shaped element can be continuous or discontinuous. In practice, there can be multiple folded elements shaped like winglets that extend from the free edge 304 and fold inward toward the retaining portion 303 to form the engaging element.

[0145] Alternatively, the engaging element 313 may be shaped as a continuous enlargement or interruption (not shown) extending from the inner surface of the retaining portion 303 toward the axis Z to engage with the locking ring 202, provided that the enlargement does not affect the tab 308.

[0146] As described above, the tab can be bent around the hinge line 310.

[0147] The hinge line 310 is transverse to the axis Z. In fact, the tab 308 includes a pair of side edges 311 that extend between the hinge line 310 and the bottom edge 309, as shown... Figure 1B and Figure 1C As shown.

[0148] The bottom edge 309 is transverse to, and in particular perpendicular to, the axis Z, and the side edges 311 are transverse to the bottom edge 309. In particular, the side edges 311 are parallel to each other, parallel to the axis Z and perpendicular to the bottom edge 309.

[0149] In other words, the tab 308 has a preferably rectangular shape, wherein the bottom edge 309 is a free edge and has a hinge line 310 on the opposite side.

[0150] However, this is not necessary, as different shapes of tabs 308 are possible, for example, they may have curved side edges 311 or be inclined relative to the bottom edge 309.

[0151] For example, Figure 14 It shows Figure 1A A variation of the closing cover 1, wherein the tab 308 has a trapezoidal shape and side edges 311 that are inclined on opposite sides relative to the centerline of the tab 308. Alternatively, the tab 308 may have a rectangular shape but with rounded corners, i.e., wherein the side edges 311 are curved, as... Figure 15 As shown.

[0152] On sidewall 3, there are two break lines or cutting lines, such as Figure 1A and Figure 2 As shown, these two break lines or cutting lines are parallel to each other and extend parallel to the axis Z, defining the corresponding side edges 311 of the tab 308.

[0153] If the side edge 311 of the tab 308 is curved, then the cutting line 6 of the side edge 311 may also be curved.

[0154] The cutting lines 6 have the same height and have a first end facing the transverse wall 4, between which a hinge line 310 is defined.

[0155] like Figure 1A As shown, the hinge line 310 is located in the joint portion 305 of the side wall 3.

[0156] As described above, the tab 308 extends relative to the first end region 305a and the second end region 305b of the connecting portion 305, and actually only has the outer part 308a.

[0157] Figures 2 to 5 One form of the closed cover 1 is shown, which is similar to Figure 1A The difference lies in that, in addition to the outer portion 308a, the tab 308 also has an inner portion 308b extending relative to the first end region 305a and the second end region 305b of the connecting portion 305, which is formed within the connecting portion 305. The hinge line 310 is also positioned on the connecting portion 305 of the sidewall 3 in this case, but close to or aligned with the first end 501 and the second end 502 of the separation line 5.

[0158] The inner part 308b is inserted between the first connecting strip 306 and the second connecting strip 307, and is separated from the connecting strips 306 and 307 by the corresponding extension of the side edge 311.

[0159] Thus, because the tab 308 has a greater height H, it has a greater ability to bend around the hinge line 310.

[0160] In fact, in this form of the closed cover 1, the cutting line 6 extends within the joint portion 305 to define the interior 308b of the tab 308.

[0161] According to a form not shown, in addition to the interior 308b, the tab 308 also includes an additional portion formed in the closure element 302 and separated from the closure element by a corresponding additional extension of the side edge 311. In fact, since the cutting line 6 extends beyond the engagement portion 305, i.e., beyond the retaining ring 301, and extends inside the closure element 302 to define the additional portion of the tab 308, the hinge line 310 of the tab 308 is positioned in the closure element 302 of the sidewall 3.

[0162] Because the height H of the tab 308 from the hinge line 310 to the bottom edge 309 increases, this type of tab 308 has even greater bending capability.

[0163] For example, the cutting line 6 may extend to the embossed line 312 of the closing element 302 to obtain the hinge line 310 positioned at the embossed line 312.

[0164] It should be noted that, for Figures 2 to 5 The lid, all of the above applies, and in the following description, regarding Figure 1A The cover, for the sake of simplicity, will not be repeated here.

[0165] Connecting strips 306 and 307 are made by cutting line 7, such as Figure 1A and Figure 2 As shown, the cutting line extends between the separation line 5 and the free edge 304 of the retaining ring 301.

[0166] The cutting line 7 has an angular extension range measured around the axis Z, which is greater than the angular distance between the first end 501 and the second end 502 of the separating line 5 (also measured around the axis Z), that is, greater than the angular extension range of the joining portion 305.

[0167] The cutting line 7 includes a first side extension 702 and a second side extension 703, which respectively partially define the first connecting band 306 and the second connecting band 307.

[0168] More specifically, both the first side extension 702 and the second side extension 703 are perpendicular to the axis Z and aligned. However, the two side extensions 702 and 703 may be slightly inclined relative to each other and have different degrees of inclination, and do not necessarily have to be parallel to each other.

[0169] The first side extension 702 and the second side extension 703 preferably extend on a first plane (not shown) parallel to the separation plane (not shown) containing the separation line 5, the first plane being transverse to the axis Z, and in particular perpendicular to the axis Z.

[0170] The first side extension 702 and the second side extension 703 respectively define the first free lower edge 306' and the second free lower edge 307' of the connecting strips 306 and 307.

[0171] In addition, the first side extension 702 and the second side extension 703 also define the first free upper edge 303' and the second free upper edge 303'' of the retaining portion 303.

[0172] The first side extension 702 and the second side extension 703 are positioned along an axis parallel to the axis Z at a distance D2 from the free edge 304 of the retaining ring 301, which corresponds to the height of the retaining portion 303.

[0173] The distance D2 can be greater than or equal to 1 mm. The distance D2 can be less than or equal to 5 mm. More specifically, the distance D2 can be less than or equal to 4 mm.

[0174] In one form, the distance D2 can be between 1 mm and 3 mm.

[0175] In one form, the distance D2 can be equal to 3.9 mm.

[0176] The height H1 of the connecting strips 306 and 307 can be greater than or equal to 1 mm and less than or equal to 5.5 mm.

[0177] More specifically, the connecting strips 306 and 307 may have a height H1 greater than or equal to 1.2 mm and less than or equal to 4 mm.

[0178] In one configuration, the height H1 can vary from 1.2 mm to 3.5 mm.

[0179] The height H1 can be equal to 2 mm.

[0180] In one form, the cover 1 may have a height H2 measured in a direction parallel to the axis Z, which may vary between 10 mm and 21 mm.

[0181] It should be noted that the connecting strips 306 and 307 include a first portion adjacent to the separation line 5 and a second portion adjacent to the cutting line 7.

[0182] exist Figure 1A and Figure 2 In the example shown, the first side extension 702 and the second side extension 703 of the separation line 5 and the cutting line 7 are located in corresponding planes parallel to each other, and the height H1 of the connecting strips 306 and 307 is constant along the entire length of the connecting strips 306 and 307 and is equal for the two connecting strips 306 and 307.

[0183] In fact, such as Figure 1B as well as Figure 3 and Figure 4 As better shown, a first connecting strip 306 is formed between the first end extension of the separating line 5 and the first side extension 702 of the cutting line 7. A second connecting strip 307 is formed between the second end extension of the separating line 5 and the second side extension 703 of the cutting line 7. The first end extension of the separating line 5 is an extension that extends to the first end 501. The second end extension is an extension that extends to the second end 502.

[0184] The first side extension 702 and the second side extension 703 extend to the cutting line 6.

[0185] Each side extension 702, 703 of the cutting line 7, namely both the first side extension 702 and the second side extension 703, can have an angular extension range around the axis Z between 20° and 110°, preferably between 30° and 70°, and even more preferably between 50° and 60°. In other words, there is an angular distance between the ends of each side extension 702, 703 between 20° and 110°, preferably between 30° and 70°, and even more preferably between 50° and 60°.

[0186] In one form, each side extension 702, 703 has an angular extension range between 20° and 90° around axis Z.

[0187] The cutting line 7 includes a central extension 701 inserted between the first side extension 702 and the second side extension 703.

[0188] The central extension 701 extends on a second plane and defines the bottom edge 309 of the tab 308, which is parallel to the separation plane and is inserted between the first plane and the free edge 304 of the retaining ring 301.

[0189] Therefore, it should be noted that, advantageously, the connecting strips 306, 307 and the tab 308 are formed by a separation line 5 and a cutting line 7 located in three planes parallel to each other, that is, the separation line 5 is located in the separation plane, while the cutting line 7 is located in the first plane with respect to the two side extensions 702 and 703, and in the second plane with respect to the central extension 701.

[0190] The central extension 701 is positioned along an axis parallel to axis Z at a distance D3 from the free edge 304 of the retaining ring 301.

[0191] The distance D3 can be less than or equal to 3 mm. More specifically, the distance D3 can be less than or equal to 1 mm.

[0192] The cutting line 6 has a second end, and the central extension 701 of the cutting line 7 extends between the second ends.

[0193] The distance between the first end of the cutting line 6 and the central extension 701 of the cutting line 7 defines the height H of the tab 308 along an axis parallel to the axis Z, which corresponds to the distance between the hinge line 310 and the bottom edge 309 of the tab 308.

[0194] The central extension 701, which defines the width of the tab 308, has an angular extension range around the axis Z between 10° and 120°, preferably between 15° and 70°, more preferably between 20° and 50°, even more preferably between 30° and 40°, and even more preferably equal to 25°. In other words, there is an angular distance between the ends of the central extension 701 between 10° and 120°, preferably between 15° and 70°, more preferably between 20° and 50°, even more preferably between 30° and 40°, and even more preferably equal to 25°.

[0195] In one form, the central extension 701 has an angular extension range around the axis Z between 10° and 120°, preferably between 20° and 40°, and even more preferably equal to 25°.

[0196] Due to these angular distances, the tab 308 has sufficient flexibility around the hinge line 310, and the connecting strips 306, 307 are long enough to allow the closing element 302 to move axially, thereby moving the tab 308 beyond the upper edge of the neck 201 when the closing cover 1 is opened, and moving the tab 308 to disengage from the locking ring 202 when the closing cover 1 is closed.

[0197] It should be noted that the cutting line 7, namely the central extension 701, the first side extension 702 and the second side extension 703, can preferably be shaped as a cut similar to the entire thickness of the sidewall 3, that is, the entire thickness of the retaining ring 301, i.e., a cutting line.

[0198] This allows the user to effortlessly define the hinge mechanism including connecting straps 306, 307 and tab 308 so that the closing element 302 can be easily removed from the retaining ring 301 during passage through the open state.

[0199] Alternatively, the cutting line 7 can be shaped like a fragile line that does not penetrate the entire thickness of the sidewall 3, but at this fragile line, the thickness of the sidewall 3 is very small relative to the surrounding area, in order to preserve the breakage of the cutting line 7 in the ring 301. Alternatively, there can also be a destructible element 704 along the cutting line 7, such as... Figure 14 and Figure 15 As shown, these destructible elements can be similar to destructible bridge 503 and may be angularly aligned with or misaligned with destructible bridge 503. For example, destructible bridge 503 may be angularly offset relative to destructible element 704 about axis Z.

[0200] Regarding the cutting lines 6, they are preferably shaped like through cuts so that they do not require damage when the container 2 is opened. These through cuts extend the entire thickness S of the sidewall 3. The joining portion 305 has an angular extension range around the axis Z between 10° and 120°, preferably between 30° and 110°, and even more preferably between 20° and 40°. In other words, there is an angular distance between the first end 501 and the second end 502 of the separating line 5 between 10° and 120°, preferably between 30° and 110°, and even more preferably between 20° and 40°.

[0201] In one form, the joining portion 305 has an angular extension range between 10° and 120°, preferably between 20° and 40°.

[0202] For example, the closed cover 1 may have a connecting portion 305 with an angular extension range of 40°, a tab 308 with an angular extension range of 25°, and a first side extension 702 and a second side extension 703 with an angular extension range between 50° and 60°.

[0203] This type of closure cover 1 has a tab 308 whose angular extension range is smaller than that of the connecting portion 305, and has wide connecting bands 306, 307.

[0204] However, for certain types of containers 2, which have a reduced-length neck 201 and are advantageously fitted with a reduced-thickness closure cap 1, the closure cap 1 may have a connecting portion 305 with an angular extension range between 90° and 120°, a tab 308 with an angular extension range between 90° and 120°, and a first side extension 702 and a second side extension 703, each with an angular extension range between 20° and 35°.

[0205] In this other type of closure 1, the tab 308 is very wide, while the two connecting strips 306, 307 are very short.

[0206] The connecting portion 305 has a centerline that coincides with the centerline of the tab 308. Furthermore, the first side extension 702 and the second side extension 703 have equal angular extension ranges, such that the connecting strips 306 and 307 are equal in length and symmetrically positioned with respect to the plane containing the axis Z and the centerline of the connecting portion 305.

[0207] However, according to a variant not shown, the first connecting strip 306 may have a different length than the second connecting strip 307, because the first side extension 702 and the second side extension 703 may have different angular extension ranges. According to even different variants, the centerline of the connecting portion 305 may not coincide with the centerline of the tab 308.

[0208] In use, Figure 1A or Figure 2 In the closed state shown, the sealing cap 1 is applied to the neck 201 of the container 2. The sealing cap 1 is positioned such that the engaging element 313, which is disposed within the retaining ring 301 and particularly on the retaining portion 303, is located below the locking ring 202 on the neck 201.

[0209] When the user wishes to open the container for the first time, the user grasps the closure element 302 and rotates it about axis Z to unscrew the closure element 302 from the neck 201. Initially, the closure element 302 and the retaining ring 301 rotate together about axis Z, and they simultaneously move together away from the neck 201 in a direction parallel to axis Z.

[0210] This occurs until the engaging element 313 of the retaining portion 303 abuts against the locking ring 202 disposed on the neck 201. At this time, the locking ring 202 prevents the retaining portion 303 from rising further along the axis Z, acting as a stop for the movement of the retaining portion 303, and thus as a stop for the movement of the retaining ring 301 away from the neck 201.

[0211] The closure element 302, which has been unscrewed by the user, continues to move along axis Z away from neck 201. This causes the destructible bridge 503 to tension until it breaks. The closure element 302 thus separates from the retaining ring 301 along the separation line 5, but remains engaged to the retaining ring 301 at the engagement portion 305.

[0212] If the user continues to unscrew the closure element 302 to move it along axis Z and remove it from the neck 201, the first connecting band 306 and the second connecting band 307 deform as they extend between the retaining portion 303, locked by the locking ring 202, and the connecting portion 305, integral with and attached to the closure element 302, which has moved away from the locking ring 202 and rises. The tabs 308, protruding relative to the first end region 305a and the second end region 305b of the connecting portion 305, also move away from the locking ring 202, simultaneously pulling the first connecting band 306 and the second connecting band 307 upwards.

[0213] If present, the destructible elements 704 are thus tensioned until they break. Therefore, the first connecting band 306 and the second connecting band 307 are spaced apart from both the closing element 302 and the retaining portion 303, and remain engaged with each other in the engaging portion 305.

[0214] Therefore, the first connecting strip 306 and the second connecting strip 307 are adopted. Figure 4 The trapezoidal shape is shown. It can be noted that the tab 308 is centrally positioned in the smaller base of the trapezoid and extends toward the free edge 304 of the retaining ring 301.

[0215] If the first connecting band 306 has the same length as the second connecting band 307, the trapezoid is an isosceles trapezoid. On the other hand, if the connecting bands 306 and 307 have different lengths, they will take the shape of an scalene trapezoid. Regarding the position of the tab 308 in the connecting portion 305, the tab 308 can extend from the center or side of the connecting portion.

[0216] The first connecting band 306 is held attached to the retaining portion 303 at the outer end of the first side extension 702 of the cut line 7. Similarly, the second connecting band 307 is held attached to the retaining portion 303 at the outer end of the second side extension 703 of the cut line 7, the outer ends of the first side extension 702 and the outer ends of the second side extension 703 defining the cut line 7 circumferentially. If the first connecting band 306 and the second connecting band 307 are arranged at an angle relative to the retaining portion 303 and converge in the connecting portion 305, the tab 308 extends along an axis parallel to the axis Z.

[0217] Continue to unscrew the closure element 302 to disengage the closure element from the connecting structure or threads formed on the neck 201, so that the container 2 can be opened. On the other hand, the retaining portion 303 of the retaining ring 301 remains anchored to the neck 201.

[0218] Since the tab 308 protrudes relative to the engagement portion 305, the closure element 302 must move further away from the neck 201 in order to completely disengage the tab 308 from the neck 201 of the container 2. However, the tab 308 may also be bent relative to the hinge line 310 so that its bottom edge 309 disengages from the upper edge of the neck 201.

[0219] As described above, the connecting portion 305 defines a hinge band that holds the closure element 302 connected relative to the neck 201, and the closure element 302 is rotatable about the hinge band away from the neck 201.

[0220] By moving the closure element 302 around the joining portion 305, after the closure element 302 and the tab 308 have disengaged from the neck 201, the closure element 302 can be moved to a lateral position and spaced apart from the neck 201, as shown. Figure 1B , Figure 1C and Figure 5 As shown, until the tab 308 resting on the neck 201 is locked.

[0221] Since the tab 308 extends from the first end region 305a to the second end region 305b relative to the connecting portion 305, the bottom edge 309 of the tab 308 intercepts the neck 201 of the container 2, as described above. More specifically, the tab 308 rests near the locking ring 202 of the neck 201 because the locking ring 202 prevents the tab 308 from rotating further.

[0222] The bottom edge 309 of the tab 308 faces the dispensing port 203 of the container 2, and the tab 308 prevents the closing element 302 from facing the neck 201 again and from accidentally rotating around the neck.

[0223] As described above, in the open state, the connecting portion 305 defines a hinge band that deforms to allow the closing element 302 to rotate relative to the neck 201, and the connecting bands 306, 307 include a first portion adjacent to the separation line 5 and a second portion adjacent to the cutting line 7.

[0224] Involving Figure 1A , Figure 14 and Figure 15 The closed cap 1 Figure 1B and Figure 1C In the open state shown, the tab 308 includes only the outer part 308a, and not only is the hinge band deformed, but the connecting bands 306 and 307 are also deformed.

[0225] The first part widens radially without undergoing significant twisting. On the other hand, the second part can be twisted to pass under the first part and be inserted between the first part and the outer surface of the neck 201. Thus, when the tab 308 rests on the neck 201 such that the bottom edge 309 of the tab 308 faces the dispensing port 203 of the container 2, the second part of the connecting straps 306 and 307 twists and lies under the first part.

[0226] Below is Figure 1A Examples of the sizes that a lid of the type shown can have.

[0227] Example 1

[0228] Cap for a neck of 29 / 25 mm (i.e., for a neck with an inner diameter of approximately 25 mm and an outer diameter of approximately 29 mm).

[0229] Radial thickness S of the connecting strip: 0.85 mm

[0230] The height H1 of the connecting strip is 1.2 mm.

[0231] The ratio between the height H1 of the connecting strip and its radial thickness S is: 1.2 / 0.85 = 1.4

[0232] Example 2

[0233] Cap for a neck of 30 / 25 mm (i.e., for a neck with an inner diameter of approximately 25 mm and an outer diameter of approximately 30 mm).

[0234] Radial thickness S of the connecting strip: 0.55 mm

[0235] The height H1 of the connecting strip is 2.8 mm.

[0236] The ratio between the height H1 of the connecting strip and its radial thickness S is: 2.8 / 0.55 = 5.1

[0237] Example 3

[0238] Cap for neck PCO1881

[0239] Radial thickness S of the connecting strip: 0.7 mm

[0240] The height H1 of the connecting strip is 3.5 mm.

[0241] The ratio between the height H1 of the connecting strip and its radial thickness S is: 3.5 / 0.7 = 5

[0242] Therefore, the ratio between the height H1 of the connecting strip and the radial thickness S of the connecting strips 306 and 307 can be greater than or equal to 1.4.

[0243] The above ratio can be less than or equal to 5.1.

[0244] More generally, the ratio between the height H of the connecting strip and the radial thickness R of the connecting strip can be less than or equal to 6.5.

[0245] These values ​​ensure that the connecting straps 306 and 307 have optimal torsional stiffness to deform by twisting, as described above, affecting at least a portion of the height H1 of each connecting strap, and ensuring that interference is generated between the neck 201 and the connecting portion 305 (and, if necessary, between the neck 201 and the connecting straps 306 and 307) sufficient to reliably and securely hold the closure element 302 in the open position. The twisting of the connecting straps 306 and 307, together with the resting of the tab 308 on the neck, promotes the closure element 302 to be in the open state.

[0246] The above reference Figure 1A The value limited by the closure cap 1 also applies. Figure 14 and Figure 15 The cover shown.

[0247] On the other hand, Figure 5 The shown involves Figure 2 In the open state of the cover, the tab 308 includes an outer 308a and an inner 308b, and the hinge band includes a first hinge element and a second hinge element respectively defined at least partially in the first end region 305a and the second end region 305b of the connecting portion 305. The deformation only affects the first hinge element and the second hinge element, and does not affect the connecting bands 306 and 307, so that these connecting bands remain substantially undeformed and untwisted.

[0248] The first hinge element and the second hinge element are respectively adjacent to the first end 501 and the second end 502 of the connecting portion, and are therefore circumferentially positioned on opposite sides.

[0249] Because of the interference between the tab 308 and the neck 201, the closing element 302 remains in the open state.

[0250] After use, the user can return the closed cover 1 to its original state through a series of operations that are the reverse of the above operations. Figure 1A and Figure 2 The closed state is shown.

[0251] In order to disengage the tab 308 from the locking ring 202, if the tab 308 is already resting on the locking ring 202, or between the connecting structure 204 and the locking ring 202, the user must first move the closing element 302 away from the neck 201, so that the first connecting band 306 and the second connecting band 307 deform in the same direction as the inclination direction of the upper wall 202a of the locking ring 202.

[0252] The specific shapes of the hinge device, namely the specific shapes of the connecting straps 306 and 307, the specific shapes of the connecting portion 305, and the specific shapes of the tab 308, are particularly suitable for deformation in an inclined direction parallel to the upper wall 202a, so that when the user pulls the closure element 302 away from the container 2, the tab 308 can be disengaged by sliding it on the upper wall 202a of the locking ring 202. However, it should be noted that the hinge device including the tab 308 according to the invention can also be advantageously applied to containers 2 with locking rings of different shapes.

[0253] Subsequently, before screwing the closure element 302 back onto the thread, the user can reapply the closure element 302 to the neck 201, rotate the closure element 302 around the engagement portion 305, and move the closure element 302 axially away from the neck 201.

[0254] During the closure of container 2, the tab 308 is not an obstruction because it is positioned parallel to the outer surface of neck 201.

[0255] like Figure 16 As shown, the closure 1 can be obtained from a concave body 8, which includes sidewalls 3 and transverse walls 4. The concave body 8 can be manufactured by molding a polymeric material, such as by compression molding or injection molding.

[0256] After the concave main body 8 has been formed, a separation line 5 and a cutting line 7 are formed on the side wall 3.

[0257] To form the separation line 5, the cutting line 7, and the cutting line 6 in the closed cover 1, a cutting unit 9 is provided, which includes a cutting tool. For example, the cutting tool may be a blade positioned perpendicular to the axis Z to form the separation line 5 and the cutting line 7, or a blade positioned parallel to the axis Z to form the cutting line 6.

[0258] The cutting unit 9 can be located downstream of the mold in which the concave body 8 has been formed. These cutting operations can be performed by corresponding blades (e.g., circular or linear blades) that interact with the sidewall 3 from the outside or the inside. In particular, the concave body 8 is capable of rotating about the axis Z of the sidewall 3 while the blades remain stationary, so that continuous areas of the sidewall 3 continuously interact with the blades.

[0259] It is also possible to keep the concave body 8 stationary and rotate the blade to make cuts.

[0260] The blades positioned perpendicular to axis Z and the blades positioned parallel to axis Z can cut simultaneously relative to the position of these blades about sidewall 3, or one of them can be used for cutting.

[0261] Figure 16 A cutting unit 9 is shown, which includes an outer surface (not shown) extending around a concave body 8 and shaped as a sidewall 3 surrounding the concave body 8 externally. The outer surface includes a first portion 902a configured to support a cutting tool 901, and a second portion 902b configured to allow the concave body 8 to rotate about its own axis Z.

[0262] The first part 902a and the second part 902b are configured to overlap in a direction parallel to the axis Z, and the concave body 8 is configured to be rotated and placed in such a way that it is pushed against the first part 902a and the second part 902b.

[0263] The cutting unit 9 also includes a flat base 903 on which the concave body 8 rests, or more precisely, on which the transverse wall 4 rests.

[0264] It should be noted that the second part 902b has a plurality of corresponding embossed lines (not shown) that are complementary in shape to the plurality of embossed lines 312 of the concave body 8.

[0265] Thus, when the concave body 8 rotates and is pushed against the outer surface, the first part of the sidewall 3 is pushed against the first part 902a, and thus against the cutting tools 901a and / or 901b to obtain the separation line 5 and / or the cutting line 7 and / or the cutting line 6, while the second part near the connecting area 401 engages with the embossed line shape of the second part 902b.

[0266] The cutting unit 9 includes a spindle 904 with a diameter smaller than that of the concave body 8, and is capable of idling about its own axis Z1 parallel to axis Z. The head 904a of the spindle 904 is configured to be received in the concave body 8 and includes a contact ring 905 made of polymer material, which is fixed in position within the spindle 904 to contact the sidewall 3 of the concave body 8.

[0267] The spindle 904 is fixed to a turntable, which is capable of rotating about the corresponding axes parallel to axes Z and Z1, in a manner not shown.

[0268] In use, the head 904a of the spindle 904 pushes against the side wall 3 of the concave body 8, so that the side wall is pushed against the first part 902a and the second part 902b of the outer surface 902.

[0269] Since the second part of the sidewall 3 engages with the conjugate shape of the embossed lines of the second part 902b via multiple embossed lines 312, the movement of the turntable about its axis causes the spindle 904 to rotate, and the latter causes the concave body 8 to roll, or more precisely, causes the first part of the sidewall 3 to roll on the first part 902a of the outer surface 902.

[0270] The cutting tool 901, fixed to the first part 902a, intercepts the side surface and contacts the ring 905, while the sidewall 3 remains pressed against the first part 902a by the head 904a of the spindle 904. The contact ring 905 ensures effective and precise cutting of the sidewall 3.

[0271] If, as in the example shown above, it is desired that the separation line 5 and the cutting line 7 lie in their respective parallel planes, then the blades that can obtain the separation line 5 and the cutting line 7 can be configured to interact with the sidewall 3 in their respective parallel planes, for example, perpendicular to the axis Z.

[0272] It should be noted that the cutting tool 901a consists of blades that are parallel to each other and are angled along the first part, such that the concave body 8 continuously intercepts the blades during rotation to define the separation line 5 and / or the cutting line 7.

[0273] If it is desired to maintain the defined destructible bridge 503 along the separation line 5 and / or maintain the defined corresponding destructible element 704 along the cutting line 7, the blade may have an interrupted cutting edge.

[0274] To manufacture the sealing cap 1 for container 2 according to the present invention, and the sealing cap 1' as described below, a method is provided, the method comprising the following steps:

[0275] - Provides a sidewall 3 of a closed cover 1 extending around axis Z and a transverse wall 4 positioned at one end of the sidewall 3;

[0276] - Cut a separation line 5 extending around axis Z on sidewall 3 to define:

[0277] - Retaining ring 301, configured to anchor retaining ring 301 to neck 201 and extend to bottom edge;

[0278] - Closure element 302, removably engaged with neck 201 to open or close container 2;

[0279] The step of cutting the separation line 5 includes interrupting the cut between the first end 501 and the second end 502 to maintain the retaining ring 301 and the closing element 302 together.

[0280] The method also includes the following steps:

[0281] - The retaining ring 301 and the closing element 302 are combined by the connecting part 305;

[0282] - A first connecting band 306 and a second connecting band 307 define the retaining ring 301, the first connecting band and the second connecting band extending from the engaging portion 305.

[0283] - Insert the tab 308 between the connecting straps 306 and 307 so that when the container 2 is opened and the connecting straps hold the closure element 302 connected to the retaining ring 301, the tab 308 can rest on the neck 201.

[0284] for Figures 1A to 11 The closing cover 1 also has the step of defining a retaining portion 303 in a retaining ring 301, the retaining portion being configured to engage internally with a locking ring 202 of a neck 201 and extend to a free edge 304 of the retaining ring 301, a first connecting band 306 extending from a first end region 305a of a connecting portion 305 to the retaining portion 303, and a second connecting band 307 extending from a second end region 305b of a connecting portion 305 to the retaining portion 303.

[0285] The method includes the steps of providing a first end region 305a and a second end region 305b of a connecting portion 305, a first connecting band 306 extending from the first end region to a retaining portion 303, a second connecting band 307 extending from the second end region to the retaining portion 303, and the second end region 305b being circumferentially positioned on the opposite side relative to the first end region 305a.

[0286] The method includes the step of forming a cutting line 7 extending between the separation line 5 and the free edge 304, the step of which includes forming a first side extension 702 and a second side extension 703 of the cutting line 7 transverse to the axis Z in a first plane parallel to the separation plane containing the separation line 5.

[0287] In this way, the first free lower edge 306' of the first connecting strip 306, the second free lower edge 307' of the second connecting strip 307, and the first free upper edge 303' and the second free upper edge 303''' of the retaining portion 303 can be defined.

[0288] The method further includes the step of forming a central extension 701 of the cutting line 7, which is inserted between a first side extension 702 and a second side extension 703 in a second plane parallel to the separation plane, and between the first separation plane and the free edge 304 of the retaining ring 301.

[0289] In this way, the bottom edge 309 of the protrusion 308 can be defined.

[0290] To form the first side extension 702, the second side extension 703, and the central extension 701 of the cutting line 7, the method includes the step of using a cutting tool 901a positioned transversely to the axis Z.

[0291] The method includes the steps of forming a separation line 5 and a cutting line 7 on three planes that are separate from each other.

[0292] If the axis Z of the cap is vertically positioned during the production of the cap 1, then advantageously, after the cap 1 is made, the cutting line 7 can be obtained with a horizontal cutting tool 901a, that is, with a horizontal blade.

[0293] In order to obtain the side edge 311 of the tab 308, there is a step of using a cutting tool 901b positioned parallel to the axis Z to make two cutting lines 6 that are parallel to the axis Z and parallel to each other.

[0294] The method includes the step of using a cutting tool to cut the separation line 5 and the cleaving line 7, the cutting tool having an interrupted cutting edge to define a plurality of destructible bridges 503 along the separation line 5 and optionally a plurality of destructible elements 704 along the cleaving line 7, or includes the step of using a cutting tool with a flat cutting edge to cut the separation line 5 and the cleaving line 7.

[0295] If axis Z is vertically positioned, then cutting line 6 can be obtained using a vertical cutting tool 901b, that is, a vertical blade can be used after the closed cover 1 is made.

[0296] A horizontal blade can be used in a first cutting station (not shown), and a vertical blade can be used in a second cutting station (not shown), that is, to continuously cut the closed cover 1 horizontally and vertically, by combining a cutting tool 901a transverse to axis Z and a cutting tool 901b parallel to axis Z.

[0297] The cutting tool 901a may also be positioned laterally to axis Z, and / or the cutting tool 901b may be positioned parallel to axis Z, so as to form the separation line 5, the cutting line 7, and the cutting line 6 continuously at an angle. For example, the first side extension 702 of the cutting line 7, the first cutting line of the cutting line, the central extension 701 of the cutting line 7, the second cutting line, and the second side extension 703 of the final cutting line 7 may be formed continuously, with the horizontal blades for forming the separation line 5 stacked on the plurality of horizontal blades for forming the cutting line 7.

[0298] Therefore, it should be noted that in order to manufacture the sealing cap 1 according to the invention, conventional molds can be used because after the concave body is formed, the separation line 5, the cutting line 7 and the cutting line 6 can be made into cutting lines on the sealing cap 1 formed into the concave body in a simple and inexpensive manner by cutting operations.

[0299] Therefore, the method according to the invention includes forming a concave body 8, which includes a sidewall 3 extending about an axis Z and a transverse wall 4 positioned at one end of the sidewall 3, and cutting a separation line 5 and a cutting line 7 in the sidewall 3 preferably from the outside or optionally from the inside of the concave body 8 by a cutting tool 901a, rotating the concave body 8 and keeping the cutting tool stationary, or optionally keeping the concave body 8 stationary and rotating the cutting tool 901a around it.

[0300] The method further includes using a spindle 904 provided with a contact ring 905 made of polymeric material to push the concave body 8, such that a first portion of the sidewall 3 abuts against a first portion 902a of the outer surface provided with cutting tools 901a and / or 901b, and a second portion of the sidewall 3 provided with embossed lines 312 engages with embossed lines present in a second portion 902b of the outer surface, the embossed lines in the second portion being shaped to be complementary to the embossed lines 312 of the sidewall 3.

[0301] The method also includes rotating the mandrel 904 in such a way that the concave body 8 rolls on a first portion 902a of the outer surface, which is pulled by the engagement between a second portion of the sidewall 3 and a second portion 902b of the outer surface.

[0302] refer to Figures 8 to 11 According to a third aspect of the invention, a possible combination of a neck 201 having a closure 1 and a container 2.

[0303] This type of closure 1 and Figure 2The only difference of the closure 1 is that it has a locking ring 301' formed on the side wall 3 by a separation line 5', which has connecting bands 306, 307 formed by a cutting line 7', the cutting line including a first side extension 702' and a second side extension 703', the first side extension and the second side extension respectively defining a first free lower edge 306' of the first connecting band 306 and a second free lower edge 307' of the second connecting band 307, wherein the first side extension 702' and the second side extension 703' are properly positioned.

[0304] In this configuration, the first connecting band 306 and the second connecting band 307 also extend from the joining portion 305 to the retaining portion 303, and the tab 308 is circumferentially inserted between the first connecting band 306 and the second connecting band 307 and extends toward the free edge 304.

[0305] As described above, the locking ring 202 extends from the outer surface of the neck 201, has an upper wall 202a facing the dispensing port 203, which is truncated conical, and a bottom wall facing the bottom of the container 2.

[0306] In other words, the locking ring 202 extends in a direction parallel to the axis Z between the upper end 202c of the dispensing port 203 closest to the neck 201 and the lower end located on the opposite side of the dispensing port 203, which, in the case shown, coincides with the bottom wall. However, it should be noted that if the locking ring 202 has a shape other than a frustoconical shape, the lower end may not coincide with the bottom wall.

[0307] According to this variation, advantageously, when the closing cover 1 and the neck 201 are combined with each other, in the sense that the closing cover 1 is applied to the neck 201, if we consider the direction parallel to the axis Z, the first side extension 702' and the second side extension 703' of the cutting line 7' are positioned beyond the lower end 202b of the locking ring 202, toward the dispensing port 203, or at the lower end when the closing element 302 is in the closed state.

[0308] More specifically, if we consider the axis Z and the plane perpendicular to the axis Z that passes through the lower end 202b of the locking ring 202, the first side extension 702' and the second side extension 703' are located on this plane or in the half-space facing the dispensing port 203.

[0309] Thus, when the closing element 302 is in the open state and the connecting straps 306 and 307 keep the closing element 302 connected to the retaining ring 301', the tab 308 can rest on the neck 201 above the upper end of the locking ring, facing the dispensing port 203.

[0310] In fact, as described above, the tab 308 can be supported, for example, resting in the outer region of the neck 201, between the locking ring 202 and the lower thread of the connecting structure 204, or precisely resting on the connecting structure 204 relative to the shape of the retaining rings 301, 301' and / or the locking rings 202 and / or the tab 308.

[0311] It should be noted that, Figures 8 to 11 In this type of closure 1, the distance D2 of the first extension 701' and the second extension 702' relative to the cut line 7' with respect to the free edge 304 of the retaining ring 301' and the positioning of the locking ring 202 in the neck 201, in the combination between the closure 1 and the neck 201, the tab 308 can be moved to, for example, rest beyond the upper end 202c of the locking ring 202, for example resting between the upper end 202c and the threads of the connecting structure 204, or precisely resting on the connecting structure 204.

[0312] It should also be noted that in this type of closure 1, the retaining ring 301' differs from the retaining ring described above in that it has a greater [value] in the direction parallel to the axis Z. Figures 1A to 7 The height shown is D1.

[0313] In fact, when the closing element 302 is in the closed state, the separation line 5' is positioned in a direction parallel to the axis Z, extending beyond the upper end 202c of the locking ring 202 towards the distribution port 203, or positioned at the upper end 202c.

[0314] More specifically, if we consider the axis Z and the plane perpendicular to the axis Z that passes through the upper end 202c of the locking ring 202, the separation line 5' lies on this plane or in the half-space facing the distribution port 203.

[0315] More specifically, if the separation line 5' is positioned in a direction parallel to the axis Z between the upper end 202c of the locking ring 202 and the lower thread of the connecting structure 204 of the neck 201, then when the closing element 302 is in the open state, the tab 308 can rest on the connecting structure 204.

[0316] Meanwhile, if the retaining ring 301' has a larger dimension D1, and the first extensions 701' and 702' are positioned beyond the lower end 202b of the retaining ring 301', then the height H1 of the connecting straps 306 and 307 can be maintained equal to... Figures 1A to 7 The height of the cover ensures the robustness of the connecting straps 306 and 307.

[0317] right Figures 1A to 7 The same considerations applied to the cover are applicable but not limited to its use. Figures 8 to 11 The scope of the invention is limited to the closure cover 1, and for the sake of brevity, these considerations will not be repeated.

[0318] Figure 14 and Figure 15 The variant embodiments of the tab 308 described by the trapezoidal shape or rounded corners of the reference tab shown are also applicable. Figures 8 to 11 The cover.

[0319] Figures 8 to 11 The operation of the lid during use is similar. Figures 1A to 7 The cover, for the sake of simplicity, will not be repeated here.

[0320] It should also be noted that, for this type of closed cap 1, the previously used method was applied. Figures 1A to 7 The same angular dimensions of the closing cover 1 are given for the joining part 305, connecting strips 306, 307 and tab 308, which will not be repeated here for the sake of simplicity.

[0321] The same considerations apply to heights H, H1, and H2, as well as distances D1 and D2.

[0322] More specifically, for Figure 5 The same considerations applied to the cover apply. Figures 8 to 11 The cover, because when the tab includes an outer 308a and an inner 308b, the hinge band includes a first hinge element and a second hinge element that are at least partially defined in the first end region 305a and the second end region 305b of the connecting portion 305, respectively, and deformation only affects the first hinge element and the second hinge element, without affecting the connecting bands 306, 307, so the connecting band remains substantially undeformed and untwisted.

[0323] However, on the other hand, by moving the closing element 302 around the joining portion 305, after the closing element 302 and the tab 308 have disengaged from the neck 201, it is possible to move the closing element 302 to a lateral position and space it from the neck 201, as... Figure 11 As shown, until the tab 308, which rests on the neck 201 and more specifically on the connecting structure 204, is locked.

[0324] Used for manufacturing Figures 8 to 11 The method of covering is similar to the reference. Figures 1A to 7 and Figure 16 The method described, however, will be performed by cutting the separation line 5' and the cutting line 7' at appropriate distances D1, D2 and D3 respectively, namely, the first central extension 701', the first side extension 702' and the second side extension 703' of the cutting line 7.

[0325] Figure 12 and Figure 13 A form of a closing cover 1' according to a second aspect of the invention is shown. The closing cover 1' and... Figures 2 to 11The difference in the closure 1 is that it has a retaining ring 301'', which is defined on the side wall 3 by a separating line 5'', having two connecting straps 306, 307 and a tab 308'' inserted between the first connecting strap 306 and the second connecting strap 307, such that when the closure element 302 is in the open state and the connecting straps 306, 307 hold the closure element 302 connected to the retaining ring 301'', the tab 308'' can rest on the neck 201. The first connecting strap 306 extends from the first end region 305a of the connecting portion 305, and the second connecting strap 307 extends from the second end region 305b of the connecting portion 305, the second end region being circumferentially positioned on the opposite side of the first end region. Based on the above description, and for the sake of brevity not to be repeated here, the definitions of the components of the closures 1 and 2 mentioned above, such as the definition of the hinge line 310, also apply here to the closure 1'.

[0326] According to this form, the tab 308'' includes a side edge 311'' and a bottom edge 309'', wherein, when the cover is in the closed state, the bottom edge 309'' is aligned with the first free lower edge 306' of the first connecting band 306 and the second free lower edge 307' of the second connecting band 307.

[0327] In fact, advantageously, there is a cutting line 7'' on the sidewall 3, which extends between the separation line 5'' and the free edge 304 of the retaining ring 301, which defines the bottom edge 309'' of the tab 308'', the first free lower edge 306' of the first connecting band 306 and the second free lower edge 307' of the second connecting band 307, and is formed by means of the cutting line on the sidewall 3.

[0328] Considering the cutting line 7”, which includes a central extension 701’’ inserted between the first side extension 702’’ and the second side extension 703’’’, it can be noted that according to this aspect of the invention, the central extension 701’’ and the two side extensions 702’’’ and 703’’’ are positioned on a single plane that is laterally, and in particular perpendicularly, to the axis Z.

[0329] In other words, the tab 308'' has a height H, which corresponds to the height H1 of the connecting strips 306 and 307, that is, the tab 308'' is formed only by the inner 308b''.

[0330] The central unit, the first side extension 702'', and the second side extension 703' are continuous with each other and are also aligned if they are located in the same plane.

[0331] Other shapes of the cutting line 7'' are also possible, not shown, such as a convex or "V" shape with inclined side extensions 702'' and 703'', wherein the central extension 701'' is closer to the free edge 304 than the side extensions 702'' and 703''.

[0332] Similarly, in this form, there are multiple destructible bridges 503 along the separation line 5'', and multiple destructible elements 704 along the cutting line 7'', wherein the destructible bridges 503 and destructible elements 704 are designed to break upon first opening of the closure cover 1, and the destructible elements 704 can be positioned at an angular offset position relative to the destructible bridges 503 about axis Z.

[0333] However, it should be noted that, preferably, a destructible bridge 503 is provided along the separation line 5'', but the cutting line 7'' can preferably be formed by a cutting line that passes through the entire thickness S of the sidewall 3.

[0334] The sidewall 3 also has two cutting lines 6'', which define the corresponding side edges 311'' of the tab 308'' and are formed by cutting lines that pass through the entire thickness S of the sidewall 3.

[0335] The central extension 701'' of the cutting line is located between the cutting lines 6''.

[0336] For example, if the cutting line 7'' is convex, the central extension 701'' of the cutting line between the cutting lines 6'' may include the apex of the convex line, while the first side extension 702'' and the second side extension 703'' may be inclined at opposite angles relative to the centerline of the tab 308''.

[0337] As a result of this form, the connecting strips 306, 307 and the tab 308'' are formed with a simplified separation line 5'' and a cutting line 7'' relative to the form of the cover described above.

[0338] In practice, if the cutting line 7'' is located in the closed state of the closing element 302 on a plane that is transverse to (e.g., perpendicular to) the axis Z and parallel to the plane in which the separating line 5'' exists, then the separating line 5'' and the cutting line 7'' are only located on two planes that are parallel to each other, thus simplifying the manufacture of the closing cover 1'. Even if the cutting line 7'' is convex, the manufacture of the closing cover 1' is simplified, for example, by requiring a circular cutting tool that is properly positioned on the first portion 902a of the outer surface.

[0339] For this form of the closure 1', the same angular dimensions as those previously given for the connecting portion 305, connecting strips 306, 307, and tab 308 of the closure 1 are applied, and will not be repeated here for the sake of simplicity. In one form, the cutting line 7'' has an angular extension range of greater than or equal to 120° and less than or equal to 250° measured around the axis Z, which is preferably greater than or equal to 130° and less than or equal to 200°.

[0340] The same considerations apply to heights H1 and H2, as well as distances D1 and D2.

[0341] If the cutting line 7'' is located in a plane parallel to the plane containing the separation line 5'', the height H of the tab can be less than or equal to the height H1 of the connecting strip. This is related to the height of the sidewall given between the hinge line 310 and the bottom edge 309''' of the tab 308'', i.e., related to the height of the cutting line 6''.

[0342] On the other hand, in the case of the tab 308'' made of a convex cutting line, the height H of the tab 308'' will vary at an angle relative to the apex of the central extension 701.

[0343] for Figure 12 and Figure 13 The sealing cap 1' is applied in accordance with the above. Figures 1A to 11 The same considerations are taken into account, but without limiting the scope of the invention. For the sake of brevity, the scope of the invention will not be repeated.

[0344] Figure 12 and Figure 13 The operation of the sealing cap 1' is similar in use. Figures 2 to 11 The operations described will not be repeated here for the sake of brevity. More specifically, for Figure 12 and Figure 13 Regarding the closed cap 1', and the open state, for Figure 5 The same considerations apply to the closed cover 1.

[0345] Since the tab 308'' only includes the inner part 308b'', the hinge band includes a first hinge element and a second hinge element that are at least partially defined in the first end region 305a and the second end region 305b of the connecting portion 305, respectively. Deformation only affects the first and second hinge elements and not the connecting bands 306 and 307. Therefore, the connecting band remains substantially undeformed and untwisted in the open state. Figure 13 As shown.

[0346] By moving the closure element 302 around the engagement portion 305, after the closure element 302 and the tab 308'' have disengaged from the neck 201, it is possible to move the closure element 302 to a lateral position and space it from the neck 201, such as... Figure 13 As shown, until the tab 308'' resting on the neck 201 (more specifically on the locking ring 212) is locked.

[0347] Used for manufacturing Figure 12 and Figure 13 The method of closing the cap 1' is similar to that in the reference. Figures 1A to 11 The method described for the closure cover 1, in addition to the step of cutting the cutting line 7'', includes the step of cutting the central extension 701'', the first side extension 702''' and the second side extension 703''' in such a way that they are continuous and aligned if they are on the same plane.

[0348] The aforementioned sealing caps 1 and 1' are made of plastic materials, such as polypropylene (PP) or polyethylene (PE).

[0349] If PE is used, its density can range from low to high. More specifically, high-density polyethylene (HDPE) may be used.

[0350] The high-density polyethylene (HDPE) used to produce the above-mentioned caps may have the following properties:

[0351] - Density can reach 950 kg / m³ 3 Up to 968 kg / m 3 Changes between;

[0352] - Under the following measurement conditions: 10 minutes, 190°C, 2.16 kg, the melt index can change from 0.3 g to 20 g;

[0353] - The molecular weight can be large or narrow, or have a single peak or multiple peaks.

[0354] If PP is used, the material can be in the form of homopolymer, multiphase copolymer, or statistical copolymer.

[0355] Under the following measurement conditions: 10 minutes, 230°C, 2.16 kg, the flowability index of PP can vary from 2 g to 20 g.

[0356] Preferred embodiments of the present invention are listed in the following numbered schemes.

[0357] Option 1. A sealing cap for a container, comprising a sidewall extending about an axis and a transverse wall positioned at one end of said sidewall, wherein a separation line is provided on said sidewall to define:

[0358] A retaining ring configured to retain anchorage to the neck of the container; a closure element removably engaged with the neck to open or close the container; a separation line extending about the axis and circumferentially interrupted to maintain the engagement of the retaining ring and the closure element; wherein the retaining ring comprises:

[0359] - A retaining portion configured to engage internally with a locking ring of the neck and extend as far as the free edge of the retaining ring;

[0360] - A connecting portion, wherein the retaining ring is connected to the closing element at the connecting portion;

[0361] - A first connecting band extending from a first end region of the joining portion to the retaining portion, and a second connecting band extending from a second end region of the joining portion to the retaining portion, the second end region being circumferentially positioned on the opposite side of the first end region;

[0362] - A tab inserted between the first connecting band and the second connecting band, the tab extending toward the free edge relative to the first end region and relative to the second end region, such that when the closure element is in the open state and the connecting bands keep the closure element connected to the retaining ring, the tab can rest on the neck.

[0363] Option 2. The cover according to Option 1, wherein the tab includes a pair of side edges and a bottom edge, the bottom edge being transverse to the axis in the closed state.

[0364] Option 3. The cover according to Option 2, wherein two cutting lines are provided on the sidewall, the two cutting lines defining the respective side edges of the tab, wherein the cutting lines are made by means of a cut through the entire thickness of the sidewall.

[0365] Option 4. The cover according to Option 3, wherein the side edges have equal heights, are parallel to each other, parallel to the axis and transverse to the bottom edge of the tab, the cutting line extends parallel to the axis, and the tab has a rectangular shape.

[0366] Option 5. The cover according to Option 3, wherein the side edge is inclined or curved relative to the bottom edge of the tab, and the tab has a trapezoidal shape or a rectangle with rounded corners.

[0367] Option 6. The cover according to any one of the preceding options, wherein the tab includes an outer portion that extends relative to the first end region and relative to the second end region.

[0368] Option 7. The cover according to Option 6, which belongs to any one of Options 2 to 5, wherein the tab further includes an interior formed at least in the joining portion, the interior being inserted between the first connecting strip and the second connecting strip, and separated from the first connecting strip and the second connecting strip by a corresponding extension of the side edge, and wherein the cutting line extends at least inside the joining portion to define the interior of the tab.

[0369] Option 8. The cover according to Option 7, wherein the tab includes an additional portion formed in the closure element and separated from the closure element by a corresponding additional extension of the side edge, and wherein the cutting line extends inside the closure element beyond the joining portion to define the additional portion of the tab.

[0370] Option 9. The cover according to any one of the preceding options, wherein the connecting band and the tab are formed by a cut line extending between the separating line and the free edge of the retaining ring, wherein the cut line includes a central extension inserted between a first side extension and a second side extension of the cut line, wherein the cut line is formed by means of a cut through the entire thickness of the sidewall.

[0371] Option 10. The cover according to Option 9, wherein the first side extension and the second side extension are aligned with each other and are transverse to the axis Z, and extend in a first plane parallel to the separation plane containing the separation line, the first side extension and the second side extension respectively defining a first free lower edge of the first connecting strip and a second free lower edge of the second connecting strip.

[0372] Option 11. The cover according to Option 9 or 10, wherein the first connecting band is defined between the first end extension of the separation line and the first side extension of the cutting line; and wherein the second connecting band is formed between the second end extension of the separation line and the second side extension of the cutting line.

[0373] Option 12. A cover according to any one of Options 9 to 11, which are subordinate to any one of Options 3 to 8, wherein the first side extension and the second side extension extend to the cutting line.

[0374] Option 13. The cover according to any one of Options 9 to 12, wherein each side extension of the cut line, i.e., both the first side extension and the second side extension, has an angular extension range around the axis between 20° and 110°, preferably between 30° and 70°, and even more preferably between 50° and 60°.

[0375] Option 14. A cover according to any one of Options 9 to 13, which are subordinate to any one of Options 2 to 8, wherein the first side extension and the second side extension are aligned with each other and are transverse to the axis and extend in a first plane parallel to the separation plane containing the separation line, and wherein the central extension extends in a second plane parallel to the separation plane and is inserted between the first plane and the free edge of the retaining ring, the central extension defining the bottom edge of the tab.

[0376] Option 15. The cover according to any one of Options 9 to 14, wherein the central extension has an angular extension range around the axis between 10° and 120°, preferably between 15° and 70°, more preferably between 20° and 50°, still more preferably between 30° and 40°, and even more preferably equal to 25°.

[0377] Option 16. The cover according to any one of the preceding options, wherein the connecting portion has an angular extension range around the axis between 10° and 120°, preferably between 30° and 110°, and even more preferably between 20° and 40°.

[0378] Option 17. The cover according to any one of the preceding options, wherein the connecting portion has a center line, the center line of the tab coincides with the center line of the connecting portion, and the first connecting strip and the second connecting strip are symmetrically positioned relative to a plane containing the center line of the axis and the connecting portion.

[0379] Option 18. The cover according to any one of the preceding options, wherein when the closure element is in the open state and the connecting band keeps the closure element connected to the retaining ring, the engaging portion defines a hinge band, and the closure element is rotatable and deformable relative to the neck about the hinge band.

[0380] Option 19. The cover according to Option 18, which is subordinate to Option 6, wherein the deformation is performed by a torsional movement affecting at least a portion of the height of each connecting band, the height being defined as the dimension of the connecting band in a direction parallel to the axis.

[0381] Option 20. The cover according to Option 18, which is subordinate to Option 7 or 8, wherein the hinge band includes a first hinge element and a second hinge element, the first hinge element and the second hinge element being at least partially defined in the first end region and the second end region of the connecting portion, respectively, and the deformation affects only the first hinge element and the second hinge element and not the connecting band.

[0382] Option 21. The cover according to any one of Options 2 to 20, wherein the tab is connected to the sidewall by a hinge line, the tab is bendable about the hinge line, the hinge line is transverse to the axis, and wherein the side edge of the tab extends from the hinge line.

[0383] Option 22. A combination of a closure cap for a container and a neck of the container, wherein the cap includes a sidewall extending about an axis and a transverse wall positioned at one end of the sidewall, a separation line being provided on the sidewall to define:

[0384] A retaining ring configured to retain anchorage to the neck; a closure element removably engaged with the neck to open or close the container; a separation line extending about the axis and circumferentially interrupted to maintain the engagement of the retaining ring and the closure element; the retaining ring comprising: a retaining portion configured to engage internally with a locking ring of the neck, the retaining portion extending as far as the free edge of the retaining ring; a coupling portion at which the retaining ring engages with the closure element; a first connecting band and a second connecting band extending from the coupling portion to the retaining portion; a tab circumferentially inserted between the first connecting band and the second connecting band, the tab extending toward the free edge; wherein the locking ring extends from the neck... The outer surface of the neck extends and extends along a line parallel to the axis between the upper and lower ends of the dispensing port closer to the neck; and wherein the connecting band is formed by a cutting line extending between the separation line and the free edge and including a first side section and a second side section, the first side section and the second side section respectively partially defining the first connecting band and the second connecting band, wherein, when the closure element is in the closed state, the first side section and the second side section are positioned toward the dispensing port beyond the lower end of the locking ring or positioned at the lower end of the locking ring, such that when the closure element is in the open state and the connecting band keeps the closure element connected to the retaining ring, the tab can rest toward the dispensing port on the neck beyond the upper end of the locking ring.

[0385] Option 23. The combination according to Option 22, wherein when the closing element is in a closed state, the separation line is positioned along a line parallel to the axis toward the dispensing port, extending beyond the upper end, or positioned at the upper end.

[0386] Option 24. The combination according to Option 23, wherein when the closing element is in the closed state, the separation line is located along a line parallel to the axis between the upper end of the locking ring and the lower thread of the connecting structure of the neck, such that when the closing element is in the open state, the tab can rest on the connecting structure.

[0387] Option 25. A combination of any one of Options 22 to 24, wherein two cutting lines are provided on the sidewall, the two cutting lines defining respective side edges of the tab, wherein the two cutting lines are made by means of a cut through the entire thickness of the sidewall.

[0388] Option 26. The combination according to Option 25, wherein the tab includes side edges and a bottom edge, wherein the bottom edge is transverse to the axis, and the side edges are of equal height, parallel to each other and parallel to the axis, and transverse to the bottom edge of the tab, the cutting line extends parallel to the axis, and the tab has a rectangular shape.

[0389] Option 27. The combination according to Option 25, wherein the tab includes a side edge and a bottom edge, wherein the bottom edge is transverse to the axis, and wherein the side edge is inclined or curved relative to the bottom edge of the tab, and the tab has a trapezoidal shape or a rectangle with rounded corners.

[0390] Option 28. A combination according to any one of Options 22 to 27, wherein the first side extension and the second side extension are aligned with each other, are transverse to the axis, and extend in a first plane parallel to the separation plane containing the separation line.

[0391] Option 29. A combination of any one of Options 22 to 28, wherein the first side segment and the second side segment respectively define a first free lower edge of the first connecting band and a second free lower edge of the second connecting band, the first connecting band being defined between the first end segment of the separation line and the first side segment of the cutting line, and the second connecting band being defined between the second end segment of the separation line and the second side segment of the cutting line.

[0392] Option 30. A combination according to any one of Options 22 to 29, wherein each side extension of the cutting line, i.e., both the first side extension and the second side extension, can have an angular extension range around the axis between 20° and 110°, preferably between 30° and 70°, and even more preferably between 50° and 60°.

[0393] Option 31. A combination of any one of options 25 to 30, which are subordinate to options 26 or 27, wherein the cutting line includes a central extension inserted between a first side extension and a second side extension, wherein the first side extension and the second side extension are aligned with each other and transverse to the axis, and extend in a first plane parallel to the separation plane containing the separation line, and wherein the central extension extends in a second plane parallel to the separation plane and is inserted between the first plane and the free edge of the retaining ring, the central extension defining the bottom edge of the tab.

[0394] Option 32. The combination according to Option 31, wherein the central extension has an angular extension range around the axis between 10° and 120°, preferably between 15° and 70°, more preferably between 20° and 50°, even more preferably between 30° and 40°, and even more preferably equal to 25°.

[0395] Option 33. A combination according to any one of options 22 to 32, wherein the joining portion has an angular extension range around the axis between 10° and 120°, preferably between 30° and 110°, and even more preferably between 20° and 40°.

[0396] Option 34. A combination of any one of Options 22 to 33, wherein the tab is connected to the sidewall via a hinge line, the tab being bendable about the hinge line, the hinge line being transverse to the axis.

[0397] Option 35. A method for manufacturing a lid, comprising the following steps:

[0398] A concave body extending around an axis is provided with sidewalls and a transverse wall positioned at one end of said sidewalls.

[0399] A separation line extending around the axis is cut on the sidewall to define:

[0400] - A retaining ring, configured to retain anchorage to the neck of the container, extending to the free edge;

[0401] - A closure element, removably engaged with the neck to open or close the container;

[0402] The step of cutting the separation line includes interrupting the cut between the first end and the second end to maintain the engagement of the retaining ring and the closing element; the method further includes the following steps:

[0403] - By combining the retaining ring and the closing element in a joint;

[0404] - A first connecting band extending from a first end region of the joint portion and a second connecting band extending from a second end region of the joint portion are defined in the retaining ring, the second end region being circumferentially positioned on the opposite side of the first end region;

[0405] - Insert the tab between the first connecting strap and the second connecting strap such that when the container is opened and the connecting straps keep the closure element connected to the retaining ring, the tab can rest on the neck.

[0406] Option 36. The method according to Option 35, and including the step of cutting a slit line extending between the separation line and the free edge of the retaining ring, the step including the step of creating a first side extension and a second side extension of the slit line, the first side extension and the second side extension being transverse to the axis in a first plane parallel to the separation plane containing the separation line to define a first free lower edge of the first connecting band and a second free lower edge of the second connecting band; creating a central extension of the slit line inserted between the first side extension and the second side extension in a second plane parallel to the separation plane and inserted between the first separation plane and the free edge of the retaining ring to define a bottom edge of the tab; wherein the steps of creating the first side extension, the second side extension and the central extension of the slit line include using a cutting tool positioned transverse to the axis.

[0407] Option 37. The method according to Option 35 or 36, and including the step of creating two cutting lines parallel to the axis to obtain corresponding side edges of the tab, the two cutting lines being parallel to each other and parallel to the axis, wherein the step of creating the two cutting lines includes using a cutting tool positioned parallel to the axis.

[0408] Option 38. The method according to Option 37, which is subordinate to Option 36, and includes the steps of successively using a cutting tool positioned transversely to the axis and then using a cutting tool positioned parallel to the axis, or vice versa.

[0409] Option 39. The method according to Option 37, which is subordinate to Option 36, and includes the step of providing a cutting tool positioned transversely to the axis and / or a cutting tool positioned parallel to the axis to continuously and angularly complete the first side extension of the cutting line, the first cutting line of the cutting line, the central extension of the cutting line, the second cutting line of the cutting line, and the second side extension of the cutting line.

[0410] Option 40. The method according to any one of Options 37 to 39, which are subordinate to Option 36, and comprising the step of cutting the separation line and the cleaving line using cutting tools having interrupted cutting edges to define a plurality of destructible bridges along the separation line and optionally a plurality of destructible elements along the cleaving line.

[0411] Option 41. The method according to any one of Options 37 to 39, which are subordinate to Option 36, and including the step of using a cutting tool with a flat cutting edge to cut the separation line and the cleaving line.

[0412] Option 42. The method according to any one of Options 37 to 41, which are subordinate to Option 36, and comprising the steps of forming the concave body and cutting the separation line, the cleaving line and the cutting line from the outside of the concave body or from the inside of the concave body using a cutting tool, rotating the concave body and keeping the cutting tool fixed, or keeping the concave body fixed and rotating the cutting tool around the concave body to obtain the cover.

[0413] Option 43. The method according to Option 42, and including the step of using a mandrel to push the concave body, the mandrel being provided with a contact ring made of polymer material, such that a first portion of the sidewall abuts against a first portion of an outer surface provided with a cutting tool, and a second portion of the sidewall provided with a plurality of embossed lines engages with corresponding plurality of embossed lines present in the second portion of the outer surface, the shapes of these corresponding plurality of embossed lines being complementary to the embossed lines of the sidewall.

[0414] Option 44. The method according to Option 43, and including the step of rotating the mandrel so that the concave body rolls on the outer surface, which is pulled by the engagement between the second portion of the sidewall and the second portion of the outer surface.

Claims

1. A closure (1) for a container (2), comprising a sidewall (3) extending about an axis (Z) and a transverse wall (4) positioned at one end of said sidewall (3), wherein a separation line (5) is provided on said sidewall (3) to define: A retaining ring (301) configured to retain anchorage to the neck (201) of the container (2); a closing element (302) removably engaged with the neck (201) to open or close the container (2); a separation line (5) extending about the axis (Z) and circumferentially interrupted to maintain the engagement of the retaining ring (301) and the closing element (302); wherein, The retaining ring (301) includes: - A retaining portion (303) configured to engage internally with a locking ring (202) of the neck (201) and extend as far as the free edge (304) of the retaining ring (301); - A connecting portion (305), wherein the retaining ring (301) is connected to the closing element (302) at the connecting portion; - A first connecting band (306) extending from a first end region (305a) of the connecting portion (305) to the retaining portion (303), and a second connecting band (307) extending from a second end region (305b) of the connecting portion (305) to the retaining portion (303), the second end region (305b) being circumferentially positioned on the opposite side of the first end region (305a); - A tab (308) inserted between the first connecting band (306) and the second connecting band (307), the tab extending toward the free edge (304) relative to the first end region (305a) and relative to the second end region (305b), such that when the closure element (302) is in the open state and the connecting bands (306, 307) keep the closure element (302) connected to the retaining ring (301), the tab (308) can rest on the neck (201); The connecting strips (306, 307) and the tabs (308) are formed by a cutting line (7) extending between the separation line (5) and the free edge (304) of the retaining ring (301). The cutting line (7) includes a central extension (701) inserted between a first side extension (702) and a second side extension (703) of the cutting line (7). The cutting line (7) is formed by a cut through the entire thickness (S) of the sidewall (3).

2. The sealing cap according to claim 1, wherein, The tab (308) includes a pair of side edges (311) and a bottom edge (309) which is transverse to the axis (Z) in the closed state.

3. The sealing cap according to claim 2, wherein, Two cutting lines (6) are provided on the sidewall (3), which define the respective side edges (311) of the tab (308), wherein the cutting lines (6) are made by means of a cut through the entire thickness of the sidewall (3).

4. The sealing cap according to claim 3, wherein, The side edges (311) have equal heights, are parallel to each other, parallel to the axis (Z) and transverse to the bottom edge (309) of the tab (308), the cutting line (6) extends parallel to the axis (Z), and the tab (308) has a rectangular shape.

5. The sealing cap according to claim 3, wherein, The side edge (311) is inclined or curved relative to the bottom edge (309) of the tab (308), which has a trapezoidal shape or a rectangle with rounded corners.

6. The closure cap according to any one of claims 3 to 5, wherein, The tab (308) includes an outer portion (308a) that extends relative to the first end region (305a) and relative to the second end region (305b).

7. The sealing cap according to claim 6, wherein, The tab further includes an interior (308b) formed at least in the joining portion (305), which is inserted between the first connecting band (306) and the second connecting band (307) and is separated from the first connecting band and the second connecting band by a corresponding extension of the side edge (311), wherein the cutting line (6) extends at least inside the joining portion (305) to define the interior (308b) of the tab (308).

8. The sealing cap according to claim 7, wherein, The tab (308) includes an additional portion formed in the closure element (302) and separated from the closure element by a corresponding additional extension of the side edge (311), wherein the cutting line (6) extends inside the closure element (302) beyond the joining portion (305) to define the additional portion of the tab (308).

9. The closure cap according to any one of claims 2 to 5, wherein, The first side extension (702) and the second side extension (703) are aligned with each other and are transverse to the axis (Z), and extend in a first plane parallel to the separation plane containing the separation line (5). The first side extension (702) and the second side extension (703) respectively define the first free lower edge (306') of the first connecting strip (306) and the second free lower edge (307') of the second connecting strip (307).

10. The sealing cap according to claim 1, wherein, The first connecting band (306) is defined between the first end extension of the separation line (5) and the first side extension (702) of the cutting line (7); and wherein the second connecting band (307) is formed between the second end extension of the separation line (5) and the second side extension (703) of the cutting line (7).

11. The closure according to any one of claims 3 to 5, wherein, The first side extension (702) and the second side extension (703) extend to the cutting line (6).

12. The sealing cap according to claim 1, wherein, Each side extension (702, 703) of the cutting line (7), namely the first side extension (702) and the second side extension (703), has an angular extension range between 20° and 110° around the axis (Z).

13. The sealing cap according to claim 1, wherein, Each side extension (702, 703) of the cutting line (7), namely the first side extension (702) and the second side extension (703), has an angular extension range between 30° and 70° around the axis (Z).

14. The sealing cap according to claim 1, wherein, Each side extension (702, 703) of the cutting line (7), namely the first side extension (702) and the second side extension (703), has an angular extension range between 50° and 60° around the axis (Z).

15. The sealing cap according to any one of claims 2 to 5, wherein, The first side extension (702) and the second side extension (703) are aligned with each other and are transverse to the axis (Z), and extend in a first plane parallel to the separation plane containing the separation line (5), wherein the central extension (701) extends in a second plane parallel to the separation plane and is inserted between the first plane and the free edge (304) of the retaining ring (301), the central extension (701) defining the bottom edge (309) of the tab (308).

16. The sealing cap according to claim 1, wherein, The central extension (701) has an angular extension range between 10° and 120° around the axis (Z).

17. The sealing cap according to claim 1, wherein, The central extension (701) has an angular extension range between 15° and 70° around the axis (Z).

18. The sealing cap according to claim 1, wherein, The central extension (701) has an angular extension range between 20° and 50° around the axis (Z).

19. The sealing cap according to claim 1, wherein, The central extension (701) has an angular extension range between 30° and 40° around the axis (Z).

20. The sealing cap according to claim 1, wherein, The central extension (701) has an angular extension range of 25° around the axis (Z).

21. The closure according to any one of claims 1 to 5, wherein, The connecting portion (305) has an angular extension range between 10° and 120° around the axis (Z).

22. The closure according to any one of claims 1 to 5, wherein, The connecting portion (305) has an angular extension range between 30° and 110° around the axis (Z).

23. The closure cap according to any one of claims 1 to 5, wherein, The connecting portion (305) has an angular extension range between 20° and 40° around the axis (Z).

24. The closure according to any one of claims 1 to 5, wherein, The connecting portion (305) has a center line, the center line of the tab (308) coincides with the center line of the connecting portion (305), and the first connecting strip (306) and the second connecting strip (307) are symmetrically positioned relative to the plane containing the axis (Z) and the center line of the connecting portion (305).

25. The closure cap according to any one of claims 1 to 5, wherein, When the closure element (302) is in the open state and the connecting bands (306, 307) keep the closure element (302) connected to the retaining ring (301), the connecting portion (305) defines a hinge band, and the closure element (302) is able to rotate and deform relative to the neck (201) about the hinge band.

26. The sealing cap according to claim 6, wherein, When the closure element (302) is in the open state and the connecting bands (306, 307) keep the closure element (302) connected to the retaining ring (301), the engaging portion (305) defines a hinge band, the closure element (302) being able to rotate and deform relative to the neck (201) about the hinge band, and wherein the deformation is performed by a torsional motion affecting at least a portion of the height of each connecting band (306, 307), the height being defined as the dimension of the connecting band (306, 307) in a direction parallel to the axis (Z).

27. The sealing cap according to claim 7 or 8, wherein, When the closure element (302) is in the open state and the connecting bands (306, 307) keep the closure element (302) connected to the retaining ring (301), the connecting portion (305) defines a hinge band, the closure element (302) is rotatable relative to the neck (201) about the hinge band and deforms; and wherein the hinge band includes a first hinge element and a second hinge element, the first hinge element and the second hinge element being at least partially defined in the first end region (305a) and the second end region (305b) of the connecting portion (305), respectively, the deformation affecting only the first hinge element and the second hinge element and not the connecting bands (306, 307).

28. The closure according to any one of claims 2 to 5, wherein, The tab (308) is connected to the sidewall (3) via a hinge line (310), the tab (308) being bendable about the hinge line, the hinge line being transverse to the axis (Z), and wherein the side edge (311) of the tab (308) extends from the hinge line (310).

Images