MX2007014212A

MX2007014212A - Pouring lid for cans.

Info

Publication number: MX2007014212A
Application number: MX2007014212A
Authority: MX
Inventors: Antonio Carlos Teixeir Alvares; Antonio Roberto Sene
Original assignee: Brasilata Embalagens Metalicas
Priority date: 2005-05-13
Filing date: 2006-05-12
Publication date: 2008-01-28
Also published as: WO2006119599A1; UY29529A1; KR20080021600A; JP2008540267A; US20080156820A1; DE602006011147D1; EP1879801B1; EP1879801A1; BRPI0501905A; AR053276A1

Abstract

A pouring lid for cans of the type comprising a tubular body (10) having an annular upper wall (12) which presents an inner face (12b), an opening (13) and having any point of its inner face (12b) positioned at a height in the interior of the tubular body (10), at minimum equal to the height of another point of said inner face (12b) positioned radially externally. A pouring lid (20) is removably fitted and retained in the opening (13) and comprises a closing wall (21) provided with a median opening (21a) and externally carrying a tubular projection (27) generally provided with an obturator (30), any point in the inner face of the closing wall (21) of the pouring lid (20), when mounted to the can, being positioned at a height, measured in the interior of the tubular body (10), at minimum equal to the height of any other point of the inner face (12b) of the annular upper wall (12).

Description

BACKGROUND COVER FOR CANS FIELD OF THE INVENTION The present invention relates to a pouring lid to be applied to a can formed generally in metal sheet, and having a polygonal or circular cross section and is provided with an upper end cap, of the type that allows multiple opening operations and closing during the progressive consumption of the bulk product stored in the can in the form of particles or liquid.

BACKGROUND OF THE INVENTION The cans of the type considered herein are in general those described in the Brazilian patent application PI0306608-8 of the same applicant, which comprise a tubular body formed by one or more peripheral side walls, in whose lower edge it is doubly sewn, or incorporated otherwise, a lower wall, and at the upper edge of which is doubly stitched, or otherwise fixed, the outer peripheral edge of an upper annular wall, having an inner peripheral edge defining a middle opening for accessing the interior of the container, and in which a seat is configured on which a reclosable cover that can be made of metal foil or plastic material will settle and be retained.

In many solutions of the known can constructions, the radial extension of the annular upper wall, defined between its outer peripheral edge and its internal peripheral edge, in which the opening is formed to have access to the inside of the can, is provided with at least one circumferential region, which when inverted can defines a barrier that prevents the free radial and gravitational flow of the bulk product that is still seated in the annular top wall of the can towards the opening of the latter. Said previous patent application PI0306608-8 of the same applicant comments the known difficulty that the user has to pour all the bulk product contained in this type of can provided with an annular upper wall, in which it is practically impossible or at least very laborious to extract all the product from the inside of the can by the simple gravitational effect. It is commented that a small amount of the product, whether in the form of powder, granulate, or liquid, tends to be retained against the annular top wall when the can is inverted after the lid has been removed. Due to the aforementioned deficiency, the solution proposed in said previous document PI0306608-8, provides a can that when opened and reversed, allows the stored product that is seated against the annular upper wall to flow radially and gravitationally towards the opening of the container. the can and externally from the latter. The aforementioned patent application also provides on the annular top wall of the can, a seat on which sits a lid that can be opened and resealed multiple times during the operation of the can as a storage container. a product. According to this previous constructive proposal of the same applicant, the upper annular wall of the tubular body is constructed in such a way that any point of its internal face remains positioned at a height, measured inside the tubular body, at least equal to the height of another point of said internal face positioned radially external, aligned and adjacent to said point. The aforementioned construction allows the annular upper wall of the can to operate as a type of hopper that directs the product towards the opening of the tubular body, when the can is inverted, allowing the flow of the product still contained inside the tubular body From the can. Although the above solution allows the bulk product stored in the can to flow completely from within said can when the lid is removed and the container inverted, there is some difficulty in providing a controlled and directed flow of the bulk product through the can. the opening of the annular top wall of the can, noting that while the need to transfer the product in bulk from the inside of the can to another specific place to receive a certain amount of said bulk material is more critical, this difficulty will be greater, since it occurs when a certain amount of the material in particles it is provided to soap and detergent tanks of washing machines, or when it is desired to transfer a relatively precise amount of the bulk material into containers designed to contain single or reduced doses.

BRIEF DESCRIPTION OF THE INVENTION Due to the aforementioned deficiency of the prior art with respect to the direction and control of bulk material released through the opening provided in the annular top wall of the can, the present invention has the generic objective of providing a pouring lid for cans of the type considered herein, and which allows, when coupled in said upper opening of the can, that the product stored inside the can is controllable and directionally released through said upper opening. A more specific objective of the present invention is to provide a pouring lid as mentioned above, which incorporates median and externally a pour spout disposed so as to direct the flow of bulk material released from the can to the desired location. A more specific objective of the present invention is to provide a pouring lid as defined above, which can remain coupled with the annular upper wall of the can, without defining, on the internal face of the latter, no point placed at a lower level to the surrounding region of said annular top wall. To achieve the aforementioned objectives, the present invention provides a pour cap for a bulk product can of the type comprising a tubular body, having at least one peripheral side wall and an annular top wall having a fixed external edge. to the peripheral side wall, an internal face turned towards the interior of the tubular body, and an internal edge defining an opening, said annular upper wall having any point of its internal face placed at a height, measured inside the tubular body, at least equal to the height of another point of said internal face positioned radially external, aligned and adjacent to said point, said cover being coupled and retained removably in the opening to close the latter. According to the invention, the pouring lid comprises a closing wall provided with a middle opening, and carrying externally a tubular projection aligned with the middle opening, any point of the internal face of the closing wall of the lid, when it is mounted on the can, being placed at a height, measured inside the tubular body, at least equal to the height of any other point on the inner face of the annular top wall. With the construction defined above it is possible that the user, after removing a lid of the type described in said Brazilian patent application PI0306608-8, recloses the can using a pouring lid of the aforementioned type, however considering that the lid The pouring can only be used when there is a need to controllably discharge a quantity of the bulk product stored in the can, or it can be kept continuously engaged in the annular top wall of the can after purchasing the product. The possibility of providing a tubular projection of the pouring cap, in the region of its free end, with a shutter that can be operated manually by the user, allowing the bulk product of progressive consumption to remain hermetically stored inside should also be considered. of the can, after the original closure cap has been replaced by the pour cap object of the present invention. The construction described here prevents the pouring lid from forming an obstacle to the free radial flow of the stored product, mainly when the latter is nearing completion, from the region adjacent to the side wall of the can, until reaching the middle opening provided in the closing wall of the cover and extending externally through the tubular projection that defines the pouring spout.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described with reference to the accompanying drawings, which are given by way of example of a possible construction of the present pouring cap and in which: Figure 1 schematically illustrates a partial sectional diametrical view of the upper portion of a can and the respective pour cap constructed in accordance with the present invention; Figure 2 schematically illustrates a partial sectional diametrical view of the upper portion of a can closed by the pour cap; Figure 3 schematically illustrates an enlarged view of a part of Figure 2, showing the profile of the annular top wall of the can and the region of seating between the pour cap and said annular top surface; and Figure 4 is a schematic view similar to that of Figure 2, but illustrating a can in an inverted position and containing a remnant portion of the product flowing gravitationally through the opening of the pouring lid and its tubular projection. .

DETAILED DESCRIPTION OF THE INVENTION As illustrated in the figures of the accompanying drawings, the present invention is applied to a can for bulk products, in powder, granular or liquid form, comprising a tubular body 10 generally made of metal sheet and having a cross section circular with a peripheral side wall 11, or any polygonal section with multiple peripheral side walls (not shown), the tubular body 10 being provided with an annular top wall 12 having an outer edge 12a, which is fixed, usually by double stitching, to an upper edge 11a of the peripheral side wall 11 of the tubular body 10, said annular upper wall 12 being provided with an internal face 12d, turned towards the interior of the tubular body 10, and an internal edge 12c defining an opening 13 to allow access to the interior of the tubular body 10. The can of the present invention also comprises a pour cap 20, usually made of plastic and which is configured to be coupled and retained removably in the opening 13, to close the latter, as described below. According to the illustrated construction, the annular top wall 12 of the tubular body 10 of the can is preferably constructed to present any point of its internal face 12b placed at a height, measured inside the tubular body 10, at least equal to the height of another point of said internal face 12b positioned radially external, aligned and adjacent to said point. The preferred construction defined above allows any radial alignment of the inner face 12b of the annular top wall 12 to take the form of a type of ramp, which can be continuous or interrupted by steps that are on planes orthogonal to the axis of the tubular body 10, said ramp is inclined ascending and towards the opening 13 of the tubular body 10, from the peripheral side wall 11. In the preferred illustrated embodiment, the points of the inner side 12b of the annular upper wall 12, placed according to the same circumferential alignment concentric to the axis of the tubular body 10, are contained in a plane orthogonal to said axis, allowing the upper annular wall 12, when applied to a tubular body 10 with a circular cross section, it is defined as a surface of revolution obtained by the rotation of a generatrix around the axis of the tubular body 10, and which is defined by the unique profile of said annular upper wall 12. As illustrated in the figures of In the drawings, the inner face 12b of the annular upper wall 12 is configured to have, along at least a portion of its radial extension, a height that increases progressively and continuously towards the opening 13. In this way, the face 12b of the annular upper wall 12, in principle is in the form of a straight line segment, inclined with respect to the axis of the tubular body 10 and extending from e the outer edge 12a fixed to the peripheral side wall 11 to the inner edge 12c defining the opening 13. However, considering that the annular top wall 12 is usually doubly stitched to the upper edge 11a of the peripheral side wall 11, the wall upper annular 12 has its inner face 12b presenting an external radial extension portion 12d, adjacent to the peripheral side wall 11 of the tubular body 10, resting in a plane orthogonal to the axis of the tubular body 10. This external radial extension portion 12d facilitates the assembly of the double sewing devices of the annular upper wall 12 to the peripheral side wall 11. In addition to the outer radial extension portion 12d, the inner face 12b of the annular top wall 12, also preferably has a portion of internal radial extension 12e, adjacent to the opening 13, which rests in a plane orthogonal to the axis of the tubular body 10, said plane being generally parallel and being disposed at a height that is slightly greater than the height of the orthogonal plane in which said external radial extension portion 12d of the inner face 12b of the annular upper wall 12 is contained. said portions of external and internal radial extension, 12d and 12e, being interconnected by a conical portion of said internal face 12b of the annular top wall 12. According to the illustrated construction, the inner edge 12c (FIG. 2) of the annular top wall 12 is bent upwardly and radially outward to form a circumferential rib 15 with a cross section defined by minus a portion of an arc of a circle, with the center in an orthogonal plane P to the axis of the tubular body 10, and which is cut off moderately by said plane P. In this construction, the pouring cap 20 comprises a closing wall 21 which incorporates a peripheral side portion 22 which is configured to define, externally, a circumferential cradle 23 (Figure 3), with cross-section in the form of an arc of a circle turned downwards, and within which the circumferential rib 15 of the upper annular wall 12, after seating the pour cap 20 on the can. The peripheral side portion 22 of the closure wall 21 of the lid 20 has its upper portion incorporating a continuous external peripheral flange 24, which sits on the circumferential rib 15, and also, optionally, on an adjacent portion of the annular top wall 12 of the can, when the circumferential rib 15 engages the circumferential cradle 23 of the pour cap 20, the latter retaining and engaging in the aperture 13. As illustrated in the drawings, in the preferred embodiment of the invention, the circumferential rib 15 of the annular upper wall 12 is bent in such a way as to define a tubular cross-section, the bending of the inner edge 12c of the annular top wall 12 being achieved in such a way that the free end thereof is disposed adjacent to an outer face of said annular top wall 12. The circumferential rib 15 with a circular tubular cross-section, together with the Pouring cap 20 constructed of plastic material, allows a plastic deformation of one or both parts after coupling and removing the pour cap 20 with respect to the opening 13 of the tubular body 10. The pour cap 20 is preferably constructed from plastic material, with its peripheral side portion 22 projecting upwards from a recessed outer edge 25 of the closure wall 21. The pour cap 20 has its closure wall 21 provided with a middle opening 21a, and incorporating externally, a projection tubular 27 defining a spout peak aligned with said middle opening 21a of the closure wall 21. The tubular projection 27 can be rectilinear or partially or fully bent, in order to better comply with the main use of the bulk product that is desired dispensing, said tubular projection being incorporated in a single piece in the pouring cap 20, to be applied to the can, replacing the closing cap pr ovista with the can or container when the user buys it. As shown in the drawings, particularly in Figures 2 and 3, the peripheral side portion 22 of the closure wall 21 can be configured externally., in the region of the cradle, to seat against the circumferential rib 15, by means of an extension defined not only above, but also below the plane P, guaranteeing, together with the dimensional interference between the peripheral side portion 22 and the opening 13, the axial retention of the pour cap 20 when it engages the annular top wall 12 of the tubular body 10. To prevent the pour cap 20 from obstructing the downward radial flow of the bulk material, from the region of the wall peripheral 11 to the medial opening 21 a of the pour cap 20, the closure wall 21 of the latter is designed to include, throughout its extension, its recessed outer edge 25 and the peripheral side portion 22, at a non-inferior level at the level of the internal face 12b of the annular upper wall 12 in the region of the latter adjacent to its opening 13. The pouring cap 20 can have its tubular projection 27 constantly open at its free end spaced away from the closing wall 21, or provided with a shutter 30, preferably placed on said free end of the tubular projection 27, and which may have different constructions that allow it to be manually operated between pouring lid positions open and closed. In the exemplary construction illustrated best in Figure 3, the plug takes the form of a plug that can be removably engaged and retained at the free end of the tubular projection 27, to close the latter. The obturator can take the approximate form of a plug which is coupled, preferably in one piece, to said tubular projection 27, by means of a plastic band 31 which operates both as a hinge and as a loop to retain the obturator 30. Although only one way of carrying out the invention has been described here, it should be understood that changes can be made in the shape and arrangement of the component parts without departing from the constructive concept that accompanies the present description.

Claims

NOVELTY OF THE INVENTION CLAIMS

1. - A pouring lid for cans of the type comprising a tubular body (10) having at least one peripheral side wall (11) and an upper annular wall (12), having an external edge (12a) fixed to the wall peripheral side (11), an internal face (12b) turned towards the interior of the tubular body (10), an inner edge (12c) defining an opening (13), said upper annular wall (12) having any point on its face internal (12b) placed at a height, measured inside the tubular body (10), at least equal to the height of another point of said internal face (12b) positioned radially external, aligned and adjacent to said point; and a pour cap (20) removably engaged and retained in the opening (13) to close it; said pouring lid (20) being characterized in that it comprises a closing wall (21) provided with a median opening (21a) and externally carrying a tubular projection (27) aligned with a middle opening (21a), any point of the face internal of the closing wall (21) of the pouring lid (20), in the condition mounted on the can, being placed at a height, measured inside the tubular body (10), at least equal to the height from any other point of the internal face (12b) of the upper annular wall (12). 2 - The lid according to claim 1, further characterized in that the inner edge (12c) of the annular upper wall (12), is folded upwardly and radially outward, to form a circumferential rib (15) with a defined cross section by at least a portion of an arc of a circle with the center resting on a plane (P) orthogonal to the axis of the tubular body (10), and cut off moderately by said plane (P), said pouring cap (20) having a peripheral side wall (22) externally provided with a circumferential cradle (23) having a cross section in the shape of an arc of a circle, and inside which the arc-shaped portion of a circle of the circumferential rib (15) is coupled (15). ). 3. The lid according to claim 2, further characterized in that the peripheral side wall (22) of the lid (20) has a top region that incorporates an outer peripheral flange (24) that sits on the circumferential rib (15). ) after coupling the latter in the circumferential cradle (23) of the pouring lid (20), keeping the latter closing the opening (13). 4. The lid according to claim 3, further characterized in that the outer peripheral flange (24) is continuous and sits on an adjacent portion of the annular upper wall (12) of the can, after closing the lid ( twenty). 5. The lid according to claim 1, further characterized in that the closing wall (21) of the pouring lid (20) comprises a recessed outer edge (25) from which the peripheral side wall projects upwardly (22). ). 6. The lid according to claim 5, further characterized in that the closing wall (21) of the pouring lid (20) is configured to remain, in all its extension including the recessed outer edge (25) and the wall peripheral side (22), at a level not lower than the level of the internal face (12b) of the annular upper wall (12) of the tubular body (10). 7 .- The lid according to claim 1, further characterized in that the tubular projection (27), which is carried by the closure wall (21) of the pouring lid (20), defines a pouring spout aligned with the opening (21a) of the closing wall (21). 8. The lid according to claim 1, further characterized in that the tubular projection (27) is incorporated in a single piece to the closing wall (21) of the pouring lid (20). 9. The lid according to claim 1, further characterized in that the pour cap (20) is formed of any material such as plastic, metal, or a composition thereof. 10. The lid according to any of the preceding claims, fur characterized in that the tubular projection (27) of the closure wall (21) of the pour cap (20), is provided, in the region of its free end , of a shutter (30) that can be manually operated between closed and open pouring lid positions. 11. The lid according to claim 10, fur characterized in that the shutter (30) is defined by a plug that engages said tubular projection (27) by means of a plastic band (31), which operates as a hinge and as a loop to retain the obturator (30). 1

2. The lid according to claim 11, fur characterized in that the plastic strip (31) joins the side of the plug (30) with the free end of the tubular projection (27).