MX2014013384A

MX2014013384A - Closure and suspension arrangement for cans.

Info

Publication number: MX2014013384A
Application number: MX2014013384A
Authority: MX
Inventors: Antonio Roberto Sene; Antonio Carlos Teixeira Álvares
Original assignee: Brasilata S A Embalagens Metálicas
Priority date: 2012-05-04
Filing date: 2013-05-03
Publication date: 2015-01-19
Also published as: BR102012010613A2; US20150129532A1; EP2844576A1; WO2013163713A1; AR090934A1; JP2015519266A; UY34784A

Abstract

The present arrangement is applied to a can comprising: a body portion (11); a neck portion (13) incorporating an outer peripheral ridge (15) and joined to the body portion (11) by a transition portion (14); and a lid (20) carrying an outer peripheral rib (25). A retention ring (40) is seated on the outer peripheral rib (25), surrounding the latter and the outer peripheral ridge (15) and being locked under said outer peripheral ridge (15); and a suspension ring (50) carrying a grip handle (60) and surrounding the neck portion (13), and locking, upwardly, the retention ring (40). A seal strip (56) is joined to the suspension ring (50) by breakable connection means (56c), blocking access to a surrounding wall (54) of the suspension ring (5), which is elastically deformable to unlock the retention ring (40).

Description

CLOSURE AND SUSPENSION SET FOR CANS FIELD OF THE INVENTION The present invention relates to a closure and suspension assembly for being applied to cans made of metal foil and comprising a tubular body portion, generally of circular section and carrying a bottom wall, a portion of upper neck, contour less than that of the body portion and a transition portion joining the body and neck portions and having an end edge defining the outline of an upper opening of the can, opening in which a removable lid is embedded. .

BACKGROUND OF THE INVENTION Tubular cans made with metal foil and comprising a body portion, of circular or polygonal cross section, closed at the bottom by a bottom wall and joined at the top, by a transition portion are well known in the art. , to a neck portion whose cross section and whose height are reduced in relation to those of the body portion.

The provision of the transition portion in the upper region of the can provides a considerable increase in the structural strength of the latter, allowing the elimination of the annular upper wall, the upper opening of the can corresponding to the internal cross section of the neck portion. In this construction, it suffices that an upper end edge of the can, that is, of the neck portion, be curved, or otherwise worked, to form an outer peripheral ferrule, which borders the upper opening of the can and which defines, in conjunction with an upper end edge of the latter, a support base of a removable lid, comprising a panel portion incorporating a peripheral tubular portion to be fitted, justly, with interference, into the upper opening , inside the neck portion, said peripheral tubular portion having a free upper edge that is curved, or otherwise worked, to form an external peripheral ring or ridge, semi-tubular in shape, open at the bottom and housing an annular seal, which is supported and compressed against the outer peripheral shoulder of the neck portion, when the peripheral tubular portion of the cap is engaged in the upper opening. or of the can.

This construction of the prior art allows the elimination of the annular upper wall and the formation of an initial tubular body, with a metal sheet of usual thickness, for example, with about 0.21 mm to about 0.27 mm, for cans of 3.6 liters, and presenting a cross section corresponding to that of the neck portion. This construction can be seen in documents PCT / BR201 / 000166 (of the present applicant), DE 402121 1 A1 and in addition FR 2,104,673, the latter appearing a tin devoid of the neck portion.

These cans may have their closure elements further comprising a retaining ring, made of plastic material, having an upper annular portion to be supported on the outer peripheral rib of the cap and an inclined skirt portion, which surrounds the outer peripheral rib of the cap. the cap and the outer peripheral shoulder of the neck portion and incorporating an internal circumferential projection to be seated and axially locked under the outer peripheral shoulder of the neck portion, to retain the outer circumferential rib of the cap, resting against the shoulder External peripheral portion of the neck portion, as described and illustrated in the aforementioned PCT / BR2011 / 000166 document.

Although the retaining ring can be constructed in such a way as to make it difficult to remove the lid without showing the opening of the can and access to its contents, the known constructions fail to provide an effective seal of inviolability, simple construction and that must necessarily break to allow and demonstrate the realization of a first opening of the can.

Another deficiency of the known constructions, for the type of tin considered here, results from the fact that they do not have a suspension assembly of simple construction, of relatively low cost and easy assembly in the body portion of the can and that is operatively associated with the retaining ring, to define with it an inviolability seal and to avoid the usual complex constructions and costly for the formation of the seal in a retaining ring that defines an element without an operational association with the suspension assembly.

Another deficiency of the known solutions refers to the need to provide a stable and non-interlocked stacking of the retaining rings and suspension rings in their supply magazines in the mechanized mounting equipment of the mentioned retaining rings and suspension in the peripheral rib of the cap and around the neck portion of the can, respectively.

BRIEF DESCRIPTION OF THE INVENTION Due to the limitations of the known solutions, an object of the present invention is to provide a closure and suspension assembly for a can of the type provided with a neck portion of reduced section and having a simple construction that allows not only a closure tight and safe of the can with a high degree of tightness and with the provision of a seal able to show a first opening of the lid, as well as an easy manual suspension of the can in any of its conditions with closed lid or with the lid withdrawal.

The invention also has the aim of providing a closure and suspension assembly as mentioned above and making the mechanized assembly of closure means and suspension means in the lid and the can, respectively, easier and safer.

Another object of the invention is to provide a closure and suspension assembly, in accordance with what has been mentioned above and which does not subject the external peripheral rib of the cover to the forces that are applied, to the latter, during its closure by embedded in the upper opening of the can.

The closure and suspension assembly in question is applied to cans comprising: a body portion; a neck portion having an upper end edge defining a top opening of the can and incorporating an outer peripheral shoulder; a transition portion, which joins the body and neck portions; and a cap including a peripheral tubular portion to be fitted in the upper opening and having an upper edge that carries an outer peripheral rib.

According to the invention, the closure and suspension assembly comprises: a retaining ring, made of plastic material, having an upper annular portion supported and retained on the outer peripheral rib and which wraps an upper portion and laterally to the latter, a portion of inclined skirt that wraps, externally and justly, to the outer peripheral rib and to the outer peripheral shoulder and that incorporates an internal circumferential projection, to be supported and axially locked under the outer peripheral shoulder; and a suspension ring, made of plastic material, which surrounds the neck portion, which bears a gripping element and which is locked in an ascending and descending manner, respectively, against the outer peripheral shoulder and against the transition portion, and which presents a peripheral upper channel, which is externally limited by a surrounding wall and in which the lower tubular projection of the retaining ring is engaged and locked in an ascending manner, the surrounding wall being elastically deformable outwards, to release the upward displacement of said tubular projection bottom and the removal of the lid, the surrounding wall being joined at the top, with a single piece and through breakable connecting means, to a separable sealing tape, peripherally surrounding a lower region of the portion of the lid. Skirt pending the retaining ring.

The construction defined above allows the closure of the can to be achieved by a simple construction, with the axial locking of the lid by means of the retaining ring and with the provision of a seal that shows the first opening, defined by the cooperation of the retaining ring with the suspension ring that carries a gripping element and that can be partially broken to allow the release of the retaining ring and the removal of the lid, preferably with the use of a simple lever tool that can be inserted between the lower region of the inclined skirt portion of the retaining ring and the surrounding wall of the suspension ring, after removing the sealing tape.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described below with reference to the accompanying drawings, given by way of example of an embodiment of the invention and in which: Figure 1 represents a top plan view of a can, in the condition closed by a lid, the latter being retained, in its closed condition, by a retaining ring locked peripherally under the outer peripheral shoulder of the neck portion of the can; Figure 2 shows a partial longitudinal sectional view of the can illustrated in figure 1, said cut being taken according to line IIA-IIA in the previous figure, with the lid in the closed position, with the gripping element, partially cut, in an operative condition, and further illustrating the bottom of another identical can, stacked on the first; Figure 2A depicts an enlarged detail of the upper portion of the can illustrated in Figure 2; Figure 2B represents a view similar to that of Figure 2A, but the cut of the upper portion of the can being taken according to line IIB-IIB in Figure 1, with said view being further illustrated by the gripping element in a non-visible condition. operative, arranged around the neck portion of the can; Figure 3 represents a planned front view, partially cut away, of the gripping element, further illustrating, in broken lines and in a through opening of one of the end portions of the gripping element, a cross section and the relative positioning of one of the radial articulation pins of the element, corresponding to the non-operative and operative positions of the gripping element; Figures 4 and 5 represent side views, partially cut away, of the container of Figures 1, 2, 2A and 2B with the element in the non-operative and operative positions, respectively; Figure 6 shows a partial diametrical sectional view of a stack of suspension rings, still devoid of the gripping element and to be fed into the magazine of a machine for mounting said rings around the neck portion of the can; Y Figure 7 represents a partial diametrical sectional view of a stack of retaining rings already assembled, each one, to a respective lid, the retaining ring + lid assemblies being stacked in such a way as they are fed into the magazine of a machine of assembly of the mentioned assemblies on the cans already filled with the product to be packaged, to provide the mechanized closing of the cans.

DETAILED DESCRIPTION OF THE INVENTION As already described and illustrated above in the attached drawings, the closure and suspension assembly proposed by the invention is applied to a tin 10 made of sheet metal, generally tinplate, which has a cross section, generally circular, but which can be polygonal, although that configuration is not illustrated in the drawings.

The can 10, of tubular shape, comprises: a body portion 11, on whose lower end edge 11a is fixed, generally by riveting, the peripheral edge of a bottom wall 12; a neck portion 13 having a concentric contour, similar and reduced relative to that of the body portion 1 1 and an upper end edge 13a defining the outline of an upper opening "A" for the can 10; and a transition portion 14 with profile inclined relative to the axis of the can 10 and joining the body 1 1 and neck 13 portions.

The upper end edge 13a of the neck portion 13 incorporates an outer peripheral shoulder 15. In the illustrated condition, the outer peripheral shoulder 15 takes the form of a ferrule of tubular cross section, obtained by folding the metal sheet radially outwardly. , in the region of the upper end edge 13a. In the drawings, the cross section of the ferrule is circular, it being understood that a peripheral shoulder with different cross-sections, tubular or not, may be formed.

The formation of the body portion 1 1 is initiated by the formation of a tubular body having the cross section corresponding to that of the neck portion 13 and which then expands radially, in part of its height, to define the portions of body 1 1 and transition 14, according to methods known in the art. Preferably, the transition portion 14 is joined at the lower part, to the body portion 1 1, by a joining region, in convex arc 14a, and joined at the upper part, to the neck portion 13, by a joining region in concave arch 14b.

The can 10 further comprises a lid 20 formed as a single piece of stamped metal foil, having a panel portion 21, which occupies a large part of the cross-sectional area of the upper opening A and which incorporates a peripheral tubular portion 22, the which is configured and dimensioned to be fitted, justly and with interference, in the upper opening A, inside the neck portion 13.

The aforementioned peripheral tubular portion 22 has an upper edge 22a in which an outer peripheral rib 25 is incorporated, configured to be supported on the outer peripheral shoulder 15, which is provided on the upper end edge 13a of the neck portion 13.

As illustrated, the lid 20 is preferably made with its panel portion 21 incorporating a sloping skirt 21 a, generally frusto-conical, which forms, with the peripheral tubular portion 22, a peripheral gutter 24, radially separating the panel 21 of the peripheral tubular portion 22, the panel portion 21 being disposed in a raised plane relative to the bottom wall 24a of the peripheral channel 24.

According to one aspect of the invention, the outer peripheral rib 25 has a partially tubular shape, open at the bottom part and having: a radially internal edge 25a which is attached to the upper edge 22a of the peripheral tubular portion 22 of the lid 20, by an annular shoulder 26 projecting outwardly from said peripheral tubular portion 22; and a radially outer edge 25b, remote from the radially internal edge 25a, wherein the outer peripheral rib 25 carries, inside it, an annular seal 30, preferably in the form of a resin cord, for example, "Plastisol", molded in the inside of the outer peripheral rib 25 of the lid 20.

The annular gasket 30 is configured, inside the outer peripheral rib 25, to be supported and compressed, against the outer peripheral shoulder 15 of the neck portion 3, when the lid 20 is fitted in the upper opening A of the can and the support of the annular step 26 on the outer peripheral shoulder 15 of the neck portion 3.

Although the drawings illustrate only an outer peripheral rib 25 in the form of a partially tubular ferrule, with the arc-shaped cross-section, it should be understood that other cross-sectional shapes other than a perfectly circular arc may be used.

According to the illustrated construction, the outer peripheral rib 25 has the projection of its edges, radially internal 25a and radially external 25b, in the axial direction of the can, secant disposed to the radially innermost half and radially half more externally, respectively, of the outline of the outer peripheral shoulder 15 of the neck portion 13.

Further in accordance with the illustrated construction, the radially inner edge 25a and the radially outer edge 25b of the outer peripheral rib 25 define, from each other, a tangent or slightly secant alignment with respect to the upper half of the outline of the outer peripheral shoulder 15 of the neck portion 13. This construction allows the upper portion of the outer peripheral protrusion 15 to penetrate, slightly, inside the lower contour of the outer peripheral rib 25, compressing the annular joint 30 and guaranteeing a high degree of sealing at closure of the lid 20, when it fits into the upper opening A of the can.

To print some degree of interference between the annular joint 30 and the upper portion of the outer peripheral shoulder 15, the annular gasket 30 is configured to be inferiorly tangent or sectioned by the radially inner, radially externally defined 25a and radially outer 25b alignment of the outer peripheral rib 25 of the cap 20.

As illustrated in the figures of the drawing, the closure assembly in question further comprises a retaining ring 40, as a single piece of plastic material and having: an upper annular portion 41 to be supported and retained on the outer peripheral rib 25 of the lid 20, wrapping upper and laterally the aforementioned outer peripheral rib 25; an inclined peripheral skirt portion 42 of the upper annular portion 41, which surrounds, laterally and fairly, the outer peripheral rib 25 of the cap 20 and the outer peripheral shoulder 15 of the neck portion 13 and incorporating a projection internal circumferential 43, to be supported and axially locked under the outer peripheral shoulder 15 of the neck portion 13.

In the illustrated configuration, the inner circumferential projection 43 has a ramp-shaped profile inclined downward and radially inward, to define a kind of tooth acting under the outer peripheral shoulder 15 of the neck 13, to provide an axially locked secure the lid 20 to the body 10 of the can.

In order that the retaining ring 40 remains securely fixed to the lid 20, the peripheral skirt 42 may further incorporate, inside it, a peripheral cord 44 configured to be seated, justly, under the radially outer edge 25b of the outer peripheral rib 25. With this, the retaining ring 40 is incorporated into the lid 20 before it is fitted in the upper opening A of the can, after the product to be canned is packaged in the latter.

As illustrated, the peripheral skirt portion 42 is provided, in part of its height and from a lower edge 42b of said peripheral skirt, of an external recess 42a, whose function will be described later.

In the polished construction, the retaining ring 40 also incorporates, in its upper annular portion 41, a first upper tubular projection 46, radially displaced backwards relative to the external contour of the retaining ring 40, so as to define, with the upper annular portion 41, a peripheral step 46a on which the lower peripheral edge 11 a is supported, that is, the riveting of the bottom wall 12 of another identical can, resting on the first in a stack of cans mentioned, as illustrated in figure 2.

The retaining ring 40 can also incorporate, in its upper annular portion 41, a second upper tubular projection 47, radially displaced rearwardly relative to the first upper tubular projection 46 and having a height generally greater than that of the latter and whose Function will be explained later.

According to the invention, the peripheral skirt 42 of the retaining ring 40 further incorporates a lower tubular projection 48 defined as a single circumferential tape or as a plurality of circumferential tape portions and incorporating, along its extensions, a tooth lower external 48a, bent upwards and configured in its lower part in the form of a ramp and whose function will be described later.

In addition according to the invention, the assembly further comprises a suspension ring 50, made of plastic material, which is mounted so as to wrap the neck portion 13 of the can, generally after the formation of the latter and before of your shipment to the packer. The suspension ring 50 is locked in an ascending and descending manner, respectively, against the outer peripheral shoulder 15 and against the transition portion 14, being axially retained between those two portions of the can.

In the illustrated configuration, the suspension ring 50 incorporates an upper projection 51, whose end edge 51a is seated under the outer peripheral shoulder 15, and a lower projection 52, whose end edge 52a is positioned adjacent to the lower region of the transition portion 14 of the can, being able to be supported against the latter. The retaining ring 50 has an inner lower portion 50a configured to be supported against the transition portion 14 and against it locked in the downward direction.

The suspension ring 50 has a peripheral upper channel 53 which is externally limited by a surrounding wall 54 provided with an internal upper tooth 54a, bent downwards and which can be configured in its upper part as a ramp. Inside the peripheral upper channel 53, the lower tubular projection 48 of the retaining ring 40 is engaged and retained in an ascending manner. The fitting of the lower tubular projection 48 in the peripheral upper channel 53 is effected only when the can is closed afterwards. of the packaging, by the support of the lid 20, already carrying the retaining ring 40, in the upper opening A of the can. The aforementioned socket of the lower tubular projection 48 is obtained with the passage of its external lower tooth 48a by the internal upper tooth 54a of the surrounding wall 54 of the suspension ring 50, which is elastically deformed outwards and which returns to its position at rest, in which its tooth 54a starts to operate as a stop for the external lower tooth 48a of the lower tubular projection 48. This arrangement prevents the retaining ring 40 from being displaced axially upwards, to release the cover 20.

In the construction now proposed, the surrounding wall 54 is joined at the top, as a single piece and through breaking means 55c, to a sealing tape 56, which can be separated, interrupted by an axial slot 56a and peripherally surrounding a lower region of the portion of peripheral skirt 42 of the retaining ring 40. The sealing tape 56 has an elongated end portion 56b, adjacent the axial slot 56a of the latter and which is loosely housed inside the outer recess 42a of the peripheral skirt portion 42. .

Thus, after the sealing tape 56 is removed, the surrounding wall 54 of the suspension ring 50 can be elastically deformed outward, to release the engagement between the internal radial tooth 54a of the surrounding wall 54 and the external radial tooth 48a of the lower tubular projection 48 of retaining ring 40, allowing upward displacement of said lower tubular projection 48 and removal of cap 20.

To facilitate opening of the lid 20 after removal of the sealing tape 56, the surrounding wall 54 of the suspension ring 50 has an upper edge 54b which maintains an axial space relative to a lower edge 42b of the peripheral skirt portion 42 of the retaining ring 40, sufficient to allow the introduction of a manual lever means in said axial space after the sealing tape 56 is removed.

Thus, in order for the lid 20 to be released, the initial manual breaking of the elongated end portion 56b of the sealing tape 56 is necessary and, next to all the rest of the latter, so that the surrounding wall 54 of the suspension ring 50 can be elastically deformed outward, to release the engagement of the radial teeth 54a and 48a, allowing the lower tubular projection 48 of the retaining ring 40 is moved axially upwards, in conjunction with the retaining ring 40 and with the lid 20, opening the can.

Thus, in order for a first opening of the can to occur, it is necessary to break the sealing tape 56 of the suspension ring 50, a breach evidencing, clearly, the violation of the closing seal of the can.

In addition according to the invention, the suspension ring 50 incorporates, externally and in its lower projection 52, in opposite regions and generally in a single piece, two radial pins 55, preferably provided, each, with an elongated head 55a respectively and the suspension assembly further comprises a gripping member 60, in a generally "U" shape, formed of any suitable material, such as plastic, having end portions 61 respectively articulated on the radial pins 55 and a middle portion 62, preferably elongated, the gripping element 60 being angularly displaceable, about the axis common to the two radial pins 55, between a non-operative position, in which it is positioned laterally and externally to a respective lateral extension of the neck portion 13 of the can and of the suspension ring 50, generally corresponding to the half of the perimeter of the neck portion 13 and of the suspension ring 50, and an operating position in which it is positioned on the can. The operative positions of the element are illustrated in figures 4 and 5.

Each end portion 61, preferably elongated, of the gripping element 60, is provided with a through opening 63 through which a respective radial pin 55 of the suspension ring 50 is supported. The through opening 63 has a width, in the direction transverse to the extension of the gripping member 60, sufficient to support, just and in said direction, the radial shank 55, and a length, in the longitudinal direction of the gripping member 60, sufficient to support the radial shank 55, both with the gripping element 60 in the inoperative position, and with the gripping element 60 in angular displacement from the inoperative position to the operative position.

The through opening 63 of each end portion 61 of the gripping element 60, has opposite side edges 63a, parallel and rectilinear, against which, justly, opposed regions of the cross section, generally circular, of the radial pin 55 are supported. respective.

The through opening 63 further has an outer end edge 63b, against which the respective radial pin 55 is supported, when the gripper 60 is in the operative position and suspending the can, as illustrated in Figures 3 and 5.

In order to operate properly, each radial pin 55 incorporates an elongated head 55a with an outline greater than the width of the through openings 63, each of these latter having an internal end, opposite the outer end edge 63b and open towards an elongated hole 64 with a contour dimensioned to allow passage of the elongated head 55a of the radial pin 55, generally with a small elastic deformation of the elongated head 55a or of the through opening 63.

Although not illustrated here, it should be understood that the gripping member 60 may have each through opening 63 having opposed, parallel and rectilinear side edges, while each radial pin 55 may have a polygonal cross-section dimensioned to cooperate with the opposite edges of the lug. each respective through opening 63 when the gripping member 60 is in its non-operative position, allowing stabilization of the gripping element 60 in that position, as defined in the patent application PI 100010-4 of the present applicant.

As the suspension ring 50 is arranged axially spaced from the outer peripheral shoulder 5 of the can, the through opening 63, at each end portion 61 of the gripping element 60, takes the form of an oblong feature, longitudinally disposed on the gripping element 60, to allow the latter to be displaced radially relative to the axis of the two radial pins 55, to increase its radius of angular displacement, avoiding any interference contact with the retaining ring 40 or with the outer peripheral shoulder 15 of the neck portion 13, when said element is moved between the non-operative and operative positions.

As illustrated in Figure 6, the suspension rings 50 are constructed to allow their stable stacking in a magazine of a mounting machine of said suspension rings 50 around the neck portion 13 in a can of the type considered herein. Therefore a lower projection 52 of each suspension ring 50 is dimensioned in width and height to be fitted inside the peripheral upper channel 53 of another suspension ring 50 arranged immediately below in a stack of said rings. The mentioned fitting of the lower projection 52 is made without deformation of the surrounding wall 54, serving only as a guide element for stabilizing the column of suspension rings 50 stacked in a magazine or in stacks to be fed to a magazine.

As illustrated in Figure 7, the retaining rings 40 are constructed to allow their stable stacking in a magazine of a mounting machine, around the neck portion 13 in a can already packaged and of the type considered here, of said retaining rings 40 already incorporated in each respective lid 20. Therefore, the lower tubular projection 48 of the retaining ring 40 is supported on the first upper projection 46 of another retaining ring 40 disposed under the first, in a stack of retaining rings 40 already incorporated, each to a cover 20. respective, with the second upper projection 48 of said other retaining ring 40 acting as an external guide stop for the lower region of the peripheral tubular portion 22 of the cap 20 incorporated into the other retaining ring 40 mentioned.

Although only one embodiment has been illustrated for the closure and suspension assembly in question, it should be understood that different alterations of shape and arrangement may be made in its component parts, without such alterations falling outside the constructive concept defined in claims that accompany this report.

Claims

NOVELTY OF THE INVENTION CLAIMS

1. A closure and suspension assembly for cans comprising: a body portion (11); a neck portion (13) having an upper end edge (13a) defining an upper opening (A) of the can and incorporating an outer peripheral shoulder (15); a transition portion (14), joining the body (1 1) and neck (13) portions; and a cover (20) including a peripheral tubular portion (22) to be fitted in the upper opening (A) and having an upper edge (22a) carrying an outer peripheral rib (25), the assembly being characterized in that it comprises : a retaining ring (40), made of plastic material, having an upper annular portion (41) supported and retained on the outer peripheral rib (25) and wrapping a peripheral side portion superiorly and laterally to the latter (42) that surrounds, externally and justly, the outer peripheral rib (25) and the outer peripheral shoulder (15) and incorporates an internal circumferential projection (43), to be supported and axially locked under the external peripheral shoulder ( 15) and a lower tubular projection (48); and a suspension ring (50), of plastic material, which bears a gripping element (60) and which wraps around the neck portion (13), being locked in an ascending and descending manner, respectively, against the outer peripheral shoulder (15). ) and against the transition portion (14), and that it has a peripheral upper channel (53), which is externally limited by a surrounding wall (54) and in which the lower tubular projection (48) of the retaining ring (40) is fitted and locked in an ascending manner, the surrounding wall being elastically deformable outwards, to release the upward displacement of said lower tubular projection and the removal of the lid, the surrounding wall (54) being attached at the top, in a single piece and through breaking means ( 55), to a sealing tape (56), which can be separated, interrupted by an axial groove (56a) and peripherally surrounding a lower region of the peripheral skirt portion (42) of the retaining ring (40).

2. The assembly according to claim 1, further characterized in that the inclined peripheral skirt (42) further incorporates, internally, a peripheral cord (44) that is configured to be supported, justly, under the radially outer edge (25b) of the outer peripheral rib (25) of the lid (20).

3. The assembly according to any one of claims 1 or 2, further characterized in that the lower projection (52) of the suspension ring (50) is fitted inside the peripheral upper channel (53) of another suspension ring (50). ) arranged immediately below in a stack of said suspension rings (50).

4. The assembly according to any one of claims 1 to 3, further characterized in that the lower tubular projection (48) is defined by at least a portion of tape incorporating, a along its extension, an external lower tooth (48a) bent upwards and configured in the lower part in ramp, the surrounding wall (54) being provided with an internal upper tooth (54a), bent downwards and operating as a stop for the lower external tooth (48a) of the lower tubular projection (48), preventing the upward axial displacement of the retaining ring (40).

5. The assembly according to any one of claims 1 to 4, further characterized in that the peripheral skirt portion (42) is provided with an external recess (42a) inside of which is loosely housed an elongated end portion (56b) of the sealing tape (56), adjacent to the axial slot (56a) of the latter.

6. The assembly according to any one of claims 1 to 5, further characterized in that the surrounding wall (54) of the suspension ring (50) has an upper edge (54b) that maintains an axial space relative to a lower edge (42b) ) of the peripheral skirt portion (42) of the retaining ring (40), sufficient to allow the introduction of a manual lever means into said axial space after removing the sealing tape (56).

7. The assembly according to any one of claims 1 to 6, further characterized in that the outer peripheral rib (25) of the lid (20) has a partially tubular shape, open at the bottom and having: a radially internal edge ( 25a) that is attached to the upper edge (22a) of the peripheral tubular portion (22), for a annular step (26) projecting outwardly from said peripheral tubular portion (22); and a radially outer edge (25b), remote from the radially internal edge (25a), wherein the outer peripheral rib (25) bears, inside it, an annular seal (30) to be supported and compressed against the external peripheral shoulder ( 15) of the neck portion (13), when the lid (20) is fitted in the upper opening (A) of the can and the support of the annular step (26) on the outer peripheral shoulder (15) of the portion of neck (13).

8. The assembly according to claim 7, further characterized in that the outer peripheral rib (25) has the projection of its edges, radially internal (25a) and radially external (25b), in the axial direction of the can, arranged in a drying mode with respect to the radially innermost half and the radially outermost half, respectively, of the contour of the outer peripheral shoulder (15) of the neck portion (13), with the radially inner edge (25a) and the radially outer edge ( 25b) of the outer peripheral rib (25) define, with each other, a secant alignment with respect to the upper half of the contour of the external peripheral shoulder (15) of the neck portion (13).

9. The assembly according to claim 8, further characterized in that the annular seal (30) is inferiorly tangent or sectioned by the alignment defined by the edges, radially internal (25a) and radially external (25b), of the outer peripheral rib (25). ) of the lid (20).

10. The assembly in accordance with any one of the claims 1 to 9, further characterized in that the retaining ring (40) further incorporates, in its upper annular portion (41), a first upper tubular projection (46), radially displaced rearwardly relative to the external contour of the retaining ring ( 40) and defining, with the upper annular portion (41), a peripheral step (46a) on which the lower peripheral edge (1 1 a) of another identical can is supported, resting on the first in a stack of the cans mentioned.

The assembly according to claim 10, further characterized in that the retaining ring (40) further incorporates, in its upper annular portion (41), a second upper tubular projection (47), radially displaced rearwardly relative to the first upper tubular projection (46), the lower tubular projection (48) of the retaining ring (40) being supported on the first upper projection (46) of another retaining ring (40) disposed under the first, in a stack of retaining rings (40) already incorporated, each to a respective cover (20), with the second upper projection (47) of said other retaining ring (40) acting as an external guide stop for the lower region of the portion peripheral tubular (22) of the lid (20) incorporated into the other retaining ring (40) mentioned.

12. The assembly according to any one of claims 1 to 11, further characterized in that the suspension ring (50) incorporates, externally and in its lower projection (52), in opposite regions, two radial pins (55), provided, each one, one head elongate (55a) respective, being that the gripping element (60) has end portions (61) respectively articulated in the radial pins (55), being angularly displaceable, around the common geometric axis to the two radial pins (55), between a non-operative position, in which it is positioned laterally and externally to a respective lateral extension of the neck portion (13), and an operative position in which it is positioned on the can.

13. The assembly according to claim 12, further characterized in that each end portion (61) of the gripping element (60) is provided with a through opening (63) through which a respective radial pin (55) is supported, said the through opening (63) has a sufficient width to support, justly, the radial pin (55), and a length, in the longitudinal direction of the grip element (60), sufficient to support the radial pin (55) , both with the gripping element (60) in the inoperative position, and with the gripping element (60) in angular displacement from the inoperative position to the operative position.

14. The assembly according to claim 13, further characterized in that each through opening (63) has opposite side edges (63a), parallel and rectilinear, against which are supported, justly, opposite regions of the cross section of the radial spike (55) respective.

15. The assembly according to claim 14, further characterized in that the through opening (63) has an outer end edge (63b), against which the respective radial pin (55) is supported, when the gripper (60) is in the operative position and suspending the can, each radial spike (55) having an elongated head (55a) with a contour greater than the width of the through openings (63), each of these latter having an internal end, opposite the outer end edge (63b) and open towards an elongated hole (64) with a contour dimensioned to allow the passage of the elongated head (55a) of the radial pin (55), with a small elastic deformation of the elongated head (55a) or of the through opening ( 63).