Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D43/00—Lids or covers for rigid or semi-rigid containers
  • B65D43/02—Removable lids or covers
  • B65D43/0202—Removable lids or covers without integral tamper element
  • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
  • B65D43/021—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the inside, or a part turned to the inside, of the mouth
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00018—Overall construction of the lid
  • B65D2543/00064—Shape of the outer periphery
  • B65D2543/00074—Shape of the outer periphery curved
  • B65D2543/00083—Shape of the outer periphery curved oval
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00018—Overall construction of the lid
  • B65D2543/00231—Overall construction of the lid made of several pieces
  • B65D2543/0024—Overall construction of the lid made of several pieces two pieces, one forming at least the whole skirt, the other forming at least the whole upper part
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00018—Overall construction of the lid
  • B65D2543/00259—Materials used
  • B65D2543/00314—Combination, e.g. laminates, several different materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00435—Lids secured to an intermediate ring or like annular member fixed to the container mouth
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
  • B65D2543/00509—Cup
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00592—Snapping means
  • B65D2543/00712—Snapping means on the lid
  • B65D2543/00722—Profiles
  • B65D2543/0074—Massive bead
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00824—Means for facilitating removing of the closure
  • B65D2543/00861—Non-integral tabs, tongues, handles or similar
  • B65D2543/0087—Non-integral tabs, tongues, handles or similar outside of the lid

Definitions

• the present invention refers to a lid formed of multiple materials, more particularly in sheet metal and in plastic material, to be applied to a container generally defined by a can with a circular or polygonal cross- section, obtained in sheet metal or in other materials, comprising a tubular body carrying an annular upper wall, which defines an access opening to the interior of the container and a seat on which the lid is removably fitted and retained, for closing the container.
• a lid formed of multiple materials, more particularly in sheet metal and in plastic material, to be applied to a container generally defined by a can with a circular or polygonal cross- section, obtained in sheet metal or in other materials, comprising a tubular body carrying an annular upper wall, which defines an access opening to the interior of the container and a seat on which the lid is removably fitted and retained, for closing the container.
• lids of cans or other similar containers said lids being constructed in a single piece in stamped sheet metal or molded plastic material and presenting a base portion, which covers the opening of the container and peripherally incorporates a retention portion to be seated and retained on the seat, when the lid is closed.
• the lids formed in stamped sheet metal are generally deprived of a tamper evident seal portion, which is incorporated to the retention portion and radially projects outwards therefrom, to cooperate with an upper edge region of the container body.
• lids of the type considered herein and molded in plastic material can be formed in a single piece, comprising base portion, retention portion and seal portion, guaranteeing the obtention of a closure element, with adequate characteristics of sealing, inviolability, strength and which is easily opened and closed by the user of a product of progressive consumption, which is stored in the container.
• the plastic-molded lids can present some limitations, in certain applications, regarding the gas and vapor impermeability, particularly during long shelf periods, and also the formation of an effective light barrier.
• Another aspect to be considered concerns the containers, whose annular upper wall is formed from a stamped sheet metal and peripherally double-seamed or otherwise hermetically attached to an end edge (upper edge) of the tubular body of the container.
• the median scrap of sheet metal, resulting from the stamping of the annular upper wall is discarded as scrap, in spite of representing a sheet metal portion generated in the surface treatment required for application in the formation of containers.
• None of the solutions of metallic lid or plastic lid permit solving the problem of discarding the median scrap resulting from the stamping of the annular upper wall of the container.
• a known composite lid construction, made of plastic and sheet metal, is described and claimed in the Certificate of Addition Cl 0401239-9.
• lid construction comprising a base portion in sheet metal, with a peripheral portion conformed to be seated on an upper edge of the tubular body of the container and coupled to a retention ring, made of plastic material, provided with seal means which guarantee the axial retention of the lid in the closed condition.
• the composite lid solutions commented above are applied to containers without an annular upper wall for the formation of the seat of the lid, the axial locking of the lid being carried out by means, such as curl, rib or screw threads, provided externally to the tubular body of the container and to be engaged by the peripheral annular element in plastic material, without having any sealing function in relation to the seat for seating the base portion integrally in metal.
• the oxygen and water vapor impermeability and the light barrier are produced by the base portion integrally in sheet metal, which is compulsorily conformed to interact with the seat defined by the upper edge of the tubular body of the container, either with or without help of an intermediate resinous sealing material.
• the lid in question comprises a base portion which peripherally incorporates a retention portion to be seated and retained on the seat of the annular upper wall of the container, when the lid is closed.
• the base portion of the lid comprises: a peripheral annular element molded in plastic material, in a single piece with the retention portion; and a central element in the form of a sheet metal plate and having an outer peripheral edge hermetically attached to the peripheral annular element.
• the lid formed according to the present invention has practically its whole area, designed for closing the container opening, defined by an opaque sheet metal plate being gas impermeable and with an extremely less production cost, allowing the retention portion in plastic material to operate as a sealing element, in cooperation with the seat, and as an element for axially retaining the lid to the tubular body of the container.
• the peripheral annular element can incorporate, internally and in a single piece, a closing central panel, also in plastic material, disposed on the central element.
• the plastic piece defined by the retention portion, by the peripheral annular element and by the central panel establishes a hermetical closing barrier, which is inferiorly reinforced in the region under the central panel with the incorporation of the metallic central element which may have its peripheral edge incorporated to the plastic material of the peripheral annular element, during the injection of the plastic material of the lid, or fitted to said plastic material after its molding.
• Figure 1 represents a perspective view of a construction for the lid in question
• Figure IA represents a view similar to that of figure 1, but illustrating a constructive variant of the lid, in which the central element in sheet metal is totally- covered with the plastic material constitutive of the peripheral annular element and of the retention portion;
• Figure 2 represents a partial diametral sectional view of the lid of figure 1, when fitted on the seat formed on annular upper wall of the tubular body of a can, said section taken according to line II-II in figure 1;
• Figure 2A represents a partial diametral sectional view of the lid, similar to that of figure 2, but considering the constructive variant of figure IA;
• Figure 3 represents a top perspective view of the central element of the base portion of the composite lid;
• Figure 4 represents a partial diametral sectional view of the central element of the lid, said section taken according to line IV-IV in figure 3;
• Figure 5 represents a partial diametrical sectional view of the lid, similar to that of figures 2 and 2A, but considering another constructive variant, according to which the central element is attached to the peripheral annular element
• Figure 7 represents a top perspective view of the central element illustrated in the embodiment of figures 5 and 6; and Figure 8 represents a partially sectioned top perspective view of a can provided with an annular upper wall, from which is medianly obtained, by stamping, the central element of the base portion of the lid, said central element being illustrated in an exploded mode.
• the composite lid of the present invention is applicable to containers of the type which comprises a tubular body
• annular upper wall 20 can be constructed in different ways as, for example, being formed by a deformed portion of the side wall 11 of the tubular body 10, as described in Brazilian Patent Application PI 0504528-2 (PCT/BR2005/000232) of the same applicant, or obtained in a separate sheet metal, being duly stamped and peripherally attached to an upper edge of the side wall
• the annular upper wall 20 Independently of the construction applied to the annular upper wall 20 (either a single piece or a piece double- seamed to the side wall 11 of the tubular body 10) , it is constructed to define, in its inner peripheral edge and around the opening A, a seat 21 which, in the illustrated construction, takes the form of a circular or substantially circular tubular cross-sectional rib, obtained by bending the inner peripheral edge of the annular upper wall 20 downward, upward and outward, until completing the tubular form.
• the seat 21 may present different constructions associable with the type of composite lid proposed herein, guaranteeing not only the axial retention of the latter on the seat 21, but also the tightness of the container.
• the seat 21 may have its cross-section defined by a circle arc with an extension sufficient to guarantee the tight seating and the retention of a confronting circumferential portion of the lid.
• the lid 30 comprises a base portion 31 which peripherally incorporates a retention portion 32, molded in plastic material, to be seated and retained against the seat 21.
• the base portion 31 of the lid 30 comprises a peripheral annular element 33, molded in plastic material, in a single piece with the retention portion 32, and a central element 34 in the form of a sheet metal plate and having an outer peripheral edge 34a to be attached, hermetically or not, to the peripheral annular element 33. More specifically, the outer peripheral edge 34a of the central element 34 is inserted and retained in the interior of the plastic material constitutive of the peripheral annular element 33, in the embodiment illustrated in figures 1, IA, 2 and 2A.
• the outer peripheral edge 34a of the central element 34 must be hermetically retained in the interior of the plastic material constitutive of the peripheral annular element 33, since said central element 34 operates as part of the lid closure, i.e., as a sealing element.
• the peripheral annular element 33 incorporates, internally and in a single piece, a closing central panel 33d disposed on the central element 34. In this case, despite being more appropriate, the retention of the outer peripheral edge 34a of the central element 34 in the plastic material of the peripheral annular element 33 is not required to be necessarily hermetic.
• the central element 34 of the base portion 31 of the lid is defined by the own median scrap R resulting from the stamping of the annular upper wall 20, as illustrated in figure 8.
• the median scrap R is produced upon stamping the annular upper wall 20, before its double-seaming to the side wall 11 of the tubular body 10.
• the peripheral annular element 33 in plastic material, of the base portion 31, superiorly incorporates, in a single piece, an inner peripheral wall portion 33a, projecting upwards, in a substantially cylindrical or frusto-conical arrangement and having an upper edge 33b whose plastic material surrounds and retains the outer peripheral edge 34a of the central element 34 in sheet metal, in the embodiments illustrated in figures 1, IA, 2 and 2A.
• the peripheral annular element 33 is also externally incorporated, in a single piece, to a lower region of the retention portion 32 which, in the illustrated construction, takes the form of a substantially cylindrical wall 32a, radially spaced from the inner peripheral wall portion 33a of the peripheral annular element 33 of the base portion 31 and circumferentially incorporating an outer cradle 35 to be seated against the seat 21, in order to axially retain the lid 30 in the closed condition.
• the peripheral annular element 33 can be deprived of the inner peripheral wall portion 33a, to receive and retain, in the interior of its constitutive plastic material, the outer peripheral edge 34a of the central element 34.
• the peripheral annular element 33 and the central element 34 are generally coplanarly arranged.
• the retention portion 32 of the lid 30, more particularly its substantially cylindrical wall 32a superiorly incorporates, in a single piece, an annular wall 36 which projects radially outwards, to be positioned over the annular upper wall 20 of the tubular body 10, when the lid 30 is closed.
• the annular wall 36 presents an outer edge 36a, which extends over the upper double seaming Rs, or over the upper edge of the side wall 11 of the tubular body 10 in case the upper double seaming is not provided, said outer edge 36a incorporating a gripping handle 37 projecting downwards, to remain close to the side wall 11 of the tubular body 10 upon seating the lid 30 on the seat 21.
• the annular wall 36 can incorporate at least one circumferential rib extension 36b, i.e., continuously formed or defined in segments, projecting upwards from the annular wall 36, radially spaced back or not in relation to the outer edge 36a of said annular wall 36, so as to be loosely and telescopically fitted, inwardly or outwardly from the lower end double seaming of another container 10, which is seated onto the former in a stack, as illustrated in figures 5 and 6, acting as a stacking guide.
• circumferential rib extension 36b i.e., continuously formed or defined in segments, projecting upwards from the annular wall 36, radially spaced back or not in relation to the outer edge 36a of said annular wall 36, so as to be loosely and telescopically fitted, inwardly or outwardly from the lower end double seaming of another container 10, which is seated onto the former in a stack, as illustrated in figures 5 and 6, acting as a stacking guide.
• the sheet metal plate of the former is provided, along and slightly- spaced from its outer peripheral edge 34a, with a plurality of spaced apart through holes 34b, which can be formed in deformed through holes 34c of the sheet metal plate, projecting outwards from the plane of the latter, said through holes 34b being filled with the plastic material of the peripheral annular element 33, upon incorporation of the central element 34 to the peripheral annular element 33.
• This incorporation may be carried out, for example, by injection molding the peripheral annular element 33 and the retention portion 32, in a single piece of plastic material, in a mold in whose interior is previously positioned the central element 34.
• the outer peripheral edge 34a of the central element 34 may also be in the form of a downwardly curved curl, for example, so as to increase even more the mechanical retention between the sheet metal and the plastic material. Aiming at easing the handling and also structurally stiffening the central element 34, it may also be provided with a central recess 34d in the form of a downwardly projecting spherical cap.
• the upper edge 33b of the inner peripheral wall portion 33a of the peripheral annular element 33 incorporates an inner annular flange 33c, in whose interior is retained the outer peripheral edge 34a of the central element 34.
• different constructive arrangements are possible for obtaining a secure and, if necessary, hermetical attachment of the sheet metal of the central element 34 to the plastic material of the single piece defined by the retention portion and by the peripheral annular element 33.
• a constructive variant of the lid 30 is illustrated in figures IA and 2A.
• the peripheral annular element 33 is constructed so that the upper edge 33b of the inner peripheral wall portion 33a, or its radially inner region, is extended, in a single piece, over the whole extension of the central element 34, forming a central panel 33d over the latter, in order to facilitate printing the messages related to the identification of the product to be packaged.
• the degree of tightness in the fixation region between the metallic central element 34 and the peripheral annular element 33 is not required to be so high as that required for the embodiment of figures 1 and 2.
• the peripheral annular element 33 incorporates, internally and in a single piece, a closing central panel 33d, also in plastic material, considering that, in this construction, the central element 34 has its outer peripheral edge 34a fitted and locked in a retention means 38 provided in the peripheral annular element 33, so as to axially retain the central element 34 seated under said central panel 33d which, in these embodiments, presents a substantially constant thickness along the whole area defined internally to the inner peripheral wall portion 33a.
• peripheral annular element 33 superiorly incorporates, in a single piece, an inner peripheral wall portion 33a provided with an upper edge 33b, as already described for the previous embodiments, said upper edge 33b internally incorporates, in a single piece, the central panel 33d, the retention means 38 being provided internally to the inner peripheral wall portion 33a of the peripheral annular element 33.
• the retention means 38 can be defined, as illustrated in figure 5, by a plurality of radial projections 38a or by a single circumferential radial projection 38a incorporated, in a single piece, to the inner peripheral wall portion 33a, and on which is fitted the outer peripheral edge 34a of the central element 34, when this is mounted under the central panel 33d.
• the retention means 38 can be also defined, as illustrated in figure 6, by at least one screw thread 38b incorporated, in a single piece, to the inner peripheral wall portion 33a, and in which is fitted the outer peripheral edge 34a of the central element 34, in order to permit the latter to be axially retained to the lid, seated against the central panel 33d.
• the upper edge 33b of an inner peripheral wall portion 33a directly incorporates the central panel 33d, without the provision of the inner annular flange 33c of the embodiments illustrated in figures 1, IA, 2 and 2A.
• the circumferential radial projection 38a in one piece or in a plurality of radially projecting elements angularly spaced apart, is slightly spaced from the central panel 33d, in order to define therewith a gap in which is tightly fitted a corresponding circumferential extension of the outer peripheral edge 34a of the central element 34, allowing the latter to be safely and easily attached and seated under the central panel 33d of the lid 30, after the injection of the plastic material of the latter, permitting simplifying the molding tools.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=40336331

Family Applications (1)

Country Status (11)

Families Citing this family (7)

Family Cites Families (10)

• 2008
  • 2008-09-01 AR ARP080103799A patent/AR068155A1/es unknown
  • 2008-09-01 JP JP2010522138A patent/JP2010536680A/ja not_active Withdrawn
  • 2008-09-01 EP EP08800200A patent/EP2185438A2/de not_active Withdrawn
  • 2008-09-01 WO PCT/BR2008/000267 patent/WO2009026666A2/en active Application Filing
  • 2008-09-01 CN CN200880104858.5A patent/CN101821171A/zh active Pending
  • 2008-09-01 CL CL2008002596A patent/CL2008002596A1/es unknown
  • 2008-09-01 MX MX2010002307A patent/MX2010002307A/es not_active Application Discontinuation
  • 2008-09-01 UY UY31315A patent/UY31315A1/es not_active Application Discontinuation
  • 2008-09-01 KR KR1020107006726A patent/KR20100075866A/ko not_active Application Discontinuation
  • 2008-09-01 RU RU2010112418/12A patent/RU2010112418A/ru not_active Application Discontinuation
  • 2008-09-01 US US12/675,107 patent/US20110121009A1/en not_active Abandoned

Non-Patent Citations (1)

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