EP3109180B1 - Abdeckung für metallbehälter - Google Patents

Abdeckung für metallbehälter Download PDF

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Publication number
EP3109180B1
EP3109180B1 EP16168536.7A EP16168536A EP3109180B1 EP 3109180 B1 EP3109180 B1 EP 3109180B1 EP 16168536 A EP16168536 A EP 16168536A EP 3109180 B1 EP3109180 B1 EP 3109180B1
Authority
EP
European Patent Office
Prior art keywords
lid
section
seal element
container
metal container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16168536.7A
Other languages
English (en)
French (fr)
Other versions
EP3109180A1 (de
Inventor
Mikael Lius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emballator Metalpak Oy
Original Assignee
Emballator Metalpak Oy
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Filing date
Publication date
Application filed by Emballator Metalpak Oy filed Critical Emballator Metalpak Oy
Publication of EP3109180A1 publication Critical patent/EP3109180A1/de
Application granted granted Critical
Publication of EP3109180B1 publication Critical patent/EP3109180B1/de
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Anticipated expiration legal-status Critical

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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
    • B65D43/0208—Removable lids or covers without integral tamper element secured by snapping over beads or projections on both the inside and the outside of the mouth of the container
    • 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
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, 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
    • B65D2543/00092—Shape of the outer periphery curved circular
    • 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
    • B65D2543/00277—Metal
    • 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
    • B65D2543/00296—Plastic
    • 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
    • B65D2543/00342—Central part of the lid
    • B65D2543/00398—Reinforcing ribs in the central part of the closure
    • B65D2543/00416—Reinforcing ribs in the central part of the closure circular
    • 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
    • B65D2543/00518—Skirt
    • 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
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • 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
    • B65D2543/00564—Contact between the container and the lid indirect by means of a gasket or similar intermediate ring
    • 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
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/00638—Rolled edge
    • 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
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00675—Periphery concerned
    • B65D2543/00685—Totality
    • 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
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00787—Periphery concerned
    • B65D2543/00796—Totality

Definitions

  • the invention relates to a lid according to the preamble of appended claim 1.
  • a lid is known from US 3 782 575 A .
  • Various storage containers which may hereinafter be referred to as just containers, are commonly used for keeping, storing and transporting various products.
  • a significant part of storage containers is formed by metal containers, which are packages with a rigid structure, commonly used for packing for instance foodstuffs as well as paints, varnishes, sizes, glues, inks, oil products or other technochemical products.
  • a lid type very commonly used for closing metal containers is a lug lid.
  • the outer circumference of the lid is provided with fastening lugs, i.e. lugs which, when the container is being closed, is bent below a rolled edge forming the outer circumference of the mouth of the container to fasten the lid to the container.
  • the lugs bent below the edge of the container mouth generate a force which presses the container lid against the outer circumference of the container, whereby the lid and a seal in the lid, remaining between the lid and the edge of the container mouth, close the container.
  • a disadvantage of a lug lid is that it is difficult to reclose in an airtight manner after the lid has been opened for the first time.
  • DE publication 8814972 U1 discloses a metal container closed with a lid comprising a metal middle part and a plastic circumferential part which is attached to the metal middle part and surrounds it, forming the outer circumference of the lid.
  • the circumferential part has a flange-like outer circumferential section and a flange-like inner circumferential section as well as a bridge section connecting them, which together define a groove opening downwards.
  • the lid can be easily perforated for instance to tint the contents of the container without a need for detaching the lid from the container.
  • the container Owing to the plastic circumferential part, the container can also be reclosed more tightly than a lug lid. In a lid according to the above, it is, however, difficult to make the wedge-like joint between the inner circumference of the container and the inner circumference section of the plastic circumferential part of the lid tight.
  • An object of the invention is to provide a novel lid for a metal container.
  • the lid according to the invention is characterized by the features of independent claim 1.
  • the invention is based on the idea that the plastic circumferential part forming the outer circumference of the lid has, in the inner circumferential section of the circumferential part, a seal element which is directed downwards and towards the outer circumferential section of the circumferential part and which forms a lip seal that becomes positioned against the inner circumference of the metal container when the container is closed with the lid fastened to the container mouth. Said lip seal also presses against the inner circumference of the container due to the effect of the internal pressure of the container, generating not only mechanical sealing but also a kind of pressure sealing between the container and the lid.
  • the lid Owing to the metal middle part, the lid is sufficiently rigid so that the middle part of the lid can be easily perforated for instance to tint the contents of the container without a need for detaching the lid from the container. Such perforating of the lid cannot be properly done when lids made completely of plastic material are used. Owing to the plastic circumferential part of the lid and the seal element in it, the lid can be easily opened and closed, and it can be reclosed more tightly than a lug lid made completely of metal, for instance.
  • Figure 1 shows schematically a metal container 1 and its lid 5, the lid 5 being detached from the metal container 1.
  • the metal container 1 may also be referred to as just a container 1.
  • Figure 2 is a schematic view of a container 1 according to Figure 1 and a lid 5 not according to the invention fastened to it in cross-section.
  • the container 1 has a mouth 2 defined by a rolled edge 3, i.e. an edge bent downwards substantially to a circular shape in cross-section. Further, on the outer side of the container 1, a fastener 4 for a handle to be used for carrying the container 1 is shown.
  • the handle itself, which may not be present in all containers, is not shown in Figure 1 .
  • the container 1 may be used for packing for instance foodstuffs or paints, varnishes, sizes, glues, inks, oil products or other technochemical products.
  • the nominal diameters of said containers 1 are typically 170 mm when the container has a capacity of 2 to 4 litres, and 285 mm when the container has a capacity of 10 to 20 litres.
  • the lid 5 described here is not, however, limited to be used with containers 1 of said sizes, in other words the lid 5 described here may also be used with containers of other sizes.
  • the lid 5 comprises a metal middle part 6 which is typically a metal sheet pressed to a desired shape. Further, the lid 5 comprises a plastic circumferential part 7 which is attached to the metal middle part 6 and surrounds it, forming the outer circumference of the lid 5.
  • the circumferential part 7 comprises an outer circumferential section 8 which becomes at least partly positioned outside the edge 3 of the container 1 when the lid 5 is fastened to the container 1.
  • the circumferential part 7 further comprises an inner circumferential section 9 which becomes at least partly positioned inside the edge 3 of the container 1 when the lid 5 is fastened to the container 1.
  • the circumferential part 7 comprises a bridge section 10 connecting the outer circumferential section 8 and the inner circumferential section 9.
  • the outer circumferential section 8, the inner circumferential section 9 and the bridge section 10 together define a groove 11 opening downwards, in which groove the edge 3 of the mouth 2 of the container 1 becomes positioned when the container 1 is closed with the lid 5.
  • the outer circumferential section 8 has a protrusion section 12 which is directed towards the outer circumference of the container 1 and which becomes positioned below the edge 3 of the container 1 and locks the lid 5 to the container 1 when the container 1 is closed with the lid 5.
  • the outer circumferential section 8 has a skirt section 13 which extends below said protrusion section 12 and moves or shrinks towards the outer circumference of the container 1 when the lid 5 is locked to the container 1, but the skirt section 13 can be bent away from the container 1 such that the protrusion section 12 moves away from below the edge 3 of the container 1 to detach the lid 5 from the container 1.
  • the inner circumferential section 9 of the circumferential part 7 of the lid 5 further comprises a seal element 14 which seals the joint between the lid 5 and the container 1 in such a section of the inner circumference of the container 1 which becomes positioned adjacent to or below the edge 3 on the inner circumference of the container 1.
  • the seal element 14 is a protrusion which is directed downwards and towards the outer circumferential section 8 from the direction of the inner circumferential section 9 and which is arranged to go round the whole circumference formed by the circumferential part 7 in the inner circumferential section 9 of the circumferential part 7.
  • the seal element 14 comprises a first slanting surface 15 which is towards an imaginary central axis CL of the lid 5 and runs slantwise from up downwards, from the direction of the inner circumferential section 9 of the circumferential part 7 towards the outer circumferential section 8.
  • the first slanting surface 15 runs slantwise from up downwards, away from the central axis CL towards the outer circumferential section 8.
  • the seal element 14 comprises a second slanting surface 16 which is directed away from the central axis CL of the lid 5 and runs slantwise from up downwards, from the direction of the inner circumferential section 9 of the circumferential part 7 towards the outer circumferential section 8.
  • the second slanting surface 16 runs slantwise from up downwards, away from the central axis CL towards the outer circumferential section 8.
  • the second slanting surface 16 runs slantwise from up downwards, away from the central axis CL towards the outer circumferential section 8.
  • there is an end surface 17 of the seal element 14 which connects lower edges 15', 16' of said slanting surfaces 15, 16 and forms the lower surface 17 of the seal element 14.
  • the seal element 14 forms a lip seal that becomes positioned or presses against the inner circumference of the metal container 1 when the container 1 is closed with the lid 5.
  • the lip seal formed by the seal element 14 presses, due to the effect of both its own structure and that of the internal pressure of the container 1, against the inner circumference of the container 1.
  • pressure sealing is generated between the container 1 and the lid 5 as a result of the pressure inside the container 1.
  • the lower edge 15' of the first slanting surface 15 of the seal element 14 is arranged to extend lower than the lower edge 16' of the second slanting surface 16.
  • the lower surface 17 of the seal element 14 runs slantwise from up downwards towards the central axis CL of the lid 5, from the lower edge 16' of the second slanting surface 16 to the lower edge 15' of the first slanting surface 15.
  • an angle 19 directed towards the outer circumferential section 8 is generated between the second slanting surface 16 and the lower surface 17 of the seal element 14, the angle being pressed against the inner circumference of the container 1.
  • a tighter joint or sealing is formed between the seal element 14 of the lid 5 and the inner circumference of the container 1 at the location of said angle 19, compared with a solution where there would be a second surface substantially parallel to the surface of the inner circumference of the container 1 being pressed against the inner circumference of the container 1.
  • the value of the angle 19 between the second slanting surface 16 of the seal element 14 and the lower surface 17 of the seal element 14 may vary for instance between 80 to 100 degrees, being preferably about 90 degrees.
  • the angle is still so acute relative to the edge 3 of the mouth 2 of the container 1 that the lower surface 17 of the seal element 14 easily guides the seal element 14 into the inside of the container 1 when the lower surface 17 of the seal element 14 contacts the edge 3 of the mouth 2 of the container 1 when the container 1 is being closed with the lid 5.
  • the metal middle part 6 of the lid 5 may be for example a sheet made of thin steel or other metal, which may be, in addition, pressed to a desired shape to make stacking of containers 1 easier or to further stiffen the structure of the middle part 6, for example.
  • the plastic circumferential part 7 of the lid 5 may be of, for instance, polypropylene (PP), polyethylene (PE) or polyurethane (PUR).
  • the seal element 14 may be of the same plastic material as the other parts or sections of the circumferential part 7 of the lid 5 and form a single casting integral to the other parts or sections of the circumferential part 7 of the lid 5.
  • the seal element 14 may also be of a different plastic material than the other parts or sections of the circumferential part 7 of the lid 5, in which case the seal element 14 may be for instance of a softer plastic material than the other parts or sections of the circumferential part 7.
  • the seal element 14 of the above type may also be manufactured as one casting integral to the other parts or sections of the circumferential part 7 of the lid 5 by using a mould for two materials, in which the metal middle part 6 may also be positioned as an insert.
  • the seal element 14 may also be separately fastened to the circumferential part 7 of the lid 5 by gluing, for example.
  • the lid 5 according to the above may be manufactured by placing the metal middle part 6 in a casting mould and by casting the plastic circumferential part 7 around the metal middle part 6 in such a way that the outer circumference 6' of the metal middle part 6 remains inside the plastic casting forming the plastic circumferential part 7.
  • the fastening of the metal middle part 6 to the plastic circumferential part 7 may be reinforced by forming one or several bent sections on the outer circumference 6' of the middle part 6.
  • the metal middle part 6 could be fastened to the plastic circumferential part 7 by gluing, for instance, or in another fastening manner.
  • Figure 3 is a schematic view of a part of a second lid 5 in cross-section.
  • the lid 5 shown in Figure 3 has, on the lower surface 17 of the seal element 14, a first auxiliary seal 20 which extends around the whole circumference of the seal element 14, increasing the tightness of the joint formed between the seal element 14 and the inner circumference of the container 1.
  • both the seal element 14 and the auxiliary seal 20 press against the inner circumference of the container 1.
  • the first auxiliary seal 20 and the second auxiliary seal 21 may be of, for example, closed-cell cellular plastic, such as polyurethane (PUR). Said auxiliary seals 20, 21 or only one of them may be used in, for example, lids 5 used for closing containers containing material with a very low viscosity. Said auxiliary sealing is also applicable to preventing possible weakening of the tightness of joints between metal and plastic parts of the container 1 and the lid 5, which might occur when the temperature varies and be the result of possible different thermal expansion coefficients of the metal and plastic parts of the container and the lid.
  • PUR polyurethane
  • Figure 4 is a schematic view of a part of the container 1 according to Figure 1 and of a third lid 5 fastened to it in cross-section
  • Figure 5 is a schematic view of a part of the lid 5 shown in Figure 4 in cross-section.
  • the lid 5 in Figures 4 and 5 comprises a metal middle part 6 and a plastic circumferential part 7 fastened to and surrounding it.
  • the circumferential part 7 comprises an outer circumferential section 8, an inner circumferential section 9 and a bridge section 10 connecting the outer circumferential section 8 and the inner circumferential section 9.
  • the outer circumferential section 8, the inner circumferential section 9 and the bridge section 10 together define a groove 11 opening downwards, in which groove the edge 3 of the mouth 2 of the container 1 becomes positioned when the container 1 is closed with the lid 5.
  • the outer circumferential section 8 further has a protrusion section 12 directed towards the outer circumference of the container 1, and a skirt section 13 extending below said protrusion section 12.
  • the inner circumferential section 9 of the circumferential part 7 of the lid 5 further comprises a seal element 14 which is a protrusion directed downwards and towards the outer circumferential section 8 from the direction of the inner circumferential section 9 and arranged to go round the whole circumference formed by the circumferential part 7 in the inner circumferential section 9 of the circumferential part 7.
  • the seal element 14 comprises a first slanting surface 15 which is towards the imaginary central axis CL of the lid 5 and runs slantwise from up downwards, from the direction of the inner circumferential section 9 of the circumferential part 7 towards the outer circumferential section 8.
  • the first slanting surface 15 runs slantwise from up downwards, away from the central axis CL towards the outer circumferential section 8.
  • the seal element 14 comprises a second slanting surface 16 which is directed away from the central axis CL of the lid 5 and runs slantwise from up downwards, from the direction of the inner circumferential section 9 of the circumferential part 7 towards the outer circumferential section 8.
  • the second slanting surface 16 runs slantwise from up downwards, away from the central axis CL towards the outer circumferential section 8.
  • the second slanting surface 16 runs slantwise from up downwards, away from the central axis CL towards the outer circumferential section 8.
  • there is further an end surface 17 of the seal element 14 which forms the lower surface 17 of the seal element 14.
  • a groove section 23 is provided which opens towards the outer circumferential section 8 of the circumferential part 7 of the lid 5 and is arranged to go round the whole circumference formed by the circumferential part 7 in the inner circumferential section 9 of the circumferential part 7.
  • a protrusion section 24 directed towards the outer circumferential section 8 is formed at the joint between the second slanting surface 16 and the groove section 23 in the lower part of the second slanting surface 16, the protrusion section being arranged to press against the inner circumference of the container 1.
  • the above-described angle 19 directed towards the outer circumferential section 8 is generated between the second slanting surface 16 and the lower surface 17, the angle being also pressed against the inner circumference of the container 1.
  • Said protrusion section 24 and said angle 19 are thus at a distance from each other in the vertical direction, said angle 19 being thus positioned below said protrusion section.
  • Said protrusion section 24 and said angle 19 both form, in the inner circumferential section of the circumferential part 7 of the lid 5, lip seal sections pressed against the inner circumference of the container 1, whereby the tightness of the joint formed between the inner circumference of the container 1 and the lid 5 can be further improved compared with the embodiment of Figure 2 by, for instance, a double lip seal solution provided by said protrusion section 23 and said angle 19.
  • Figure 4 further shows a third auxiliary seal 25 which is positioned in the groove section 23 and extends around the whole circumference of the seal element 14, being thus directed towards the outer circumferential section 8 and becoming positioned between the seal element 14 and the inner circumference of the container 1 to increase the tightness of the joint formed between the seal element 14 and the inner circumference of the container 1.
  • the first auxiliary seal 20 and the second auxiliary seal 21 mentioned earlier may be used in the lid 5 of Figures 4 and 5 .
  • the third auxiliary seal 25 may have the same properties as the first auxiliary seal 20 or the second auxiliary seal 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Claims (10)

  1. Deckel (5) für einen Metallbehälter (1), wobei der Deckel (5) einen Metall-Mittelteil (6) und einen daran befestigten und ihn umgebenden Kunststoffumfangsteil (7) umfasst, wobei der Umfangsteil (7) den Außenumfang des Deckels (5) bildet und einen äußeren Umfangsabschnitt (8) und einen inneren Umfangsabschnitt (9) sowie einen diese verbindenden Brückenabschnitt (10) aufweist, die zusammen eine nach unten geöffnete Rille (11) definieren, und bei dem der innere Umfangsabschnitt (9) des Umfangsteils (7) zumindest ein nach unten und zum äußeren Umfangsabschnitt (8) gerichtetes Dichtungselement (14) umfasst,
    wobei
    das Dichtungselement (14) eine erste schräge Oberfläche (15) umfasst, die zu einer Mittelachse (CL) des Deckels (5) hin und schräg von oben nach unten zum äußeren Umfangsabschnitt (8) des Umfangsteils (7) verläuft, und eine zweite Schrägfläche (16), die von der Mittelachse (CL) des Deckels (5) weg gerichtet ist und schräg von oben nach unten zum äußeren Umfangsabschnitt (8) des Umfangsteils (7) verläuft und im unteren Teil des Dichtungselements (14) eine Endfläche (17) die Unterkanten (15', 16') der Schrägflächen (15, 16) verbindet und die Unterseite (17) des Dichtungselements (14) bildet, dadurch gekennzeichnet, dass
    auf der Unterseite (17) des Dichtungselements (14) eine erste Hilfsdichtung (20) vorhanden ist, die sich über den gesamten Umfang des Dichtungselements (14) erstreckt.
  2. Deckel für einen Metallbehälter nach Anspruch 1, dadurch gekennzeichnet, dass in vertikaler Richtung des Deckels (5) die Unterkante (15') der ersten Schrägfläche (15) so angeordnet ist, dass sie sich niedriger erstreckt als die Unterkante (16') der zweiten Schrägfläche (16), wobei die Unterseite (17) des Dichtungselements (14) von oben nach unten zur Mittelachse (CL) des Deckels (5) von der Unterkante (16') der zweiten Schrägfläche (16) zur Unterkante (15') der ersten Schrägfläche (15) schräg verläuft und einen Winkel (19) erzeugt, der zum äußeren Umfangsabschnitt (8) gerichtet ist.
  3. Deckel für einen Metallbehälter nach Anspruch 2, dadurch gekennzeichnet, dass an der Verbindung zwischen der zweiten schrägen Oberfläche (16) und der Unterseite (17) des Dichtungselements (14) ein Rillenabschnitt (23) vorgesehen ist, der sich zum äußeren Umfangsabschnitt (8) hin öffnet, wobei an der Verbindung zwischen der zweiten schrägen Oberfläche (16) und dem Rillenabschnitt (23) ein zum äußeren Umfangsabschnitt (8) gerichteter Vorsprung (24) und an der Verbindung zwischen der unteren Oberfläche (17) und dem Rillenabschnitt (23) ein zum äußeren Umfangsabschnitt (8) gerichteter Winkel (19) vorhanden ist.
  4. Deckel für einen Metallbehälter nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Winkel zwischen der zweiten schrägen Oberfläche (16) und der Unterseite (17) des Dichtungselements (14) 80 bis 100 Grad, vorzugsweise etwa 90 Grad beträgt.
  5. Deckel für einen Metallbehälter nach einem beliebigen der vorstehenden Ansprüche, dadurch gekennzeichnet, dass auf der Unterseite des Deckels (5) an der Verbindung zwischen dem Mittelteil (6) und dem Umfangsteil (7) des Deckels (5) eine zweite Hilfsdichtung (21) vorhanden ist, die sich über den gesamten Umfang der Verbindung erstreckt.
  6. Deckel für einen Metallbehälter nach Anspruch 3, dadurch gekennzeichnet, dass im Rillenabschnitt (23) des Dichtungselements (14) eine dritte Hilfsdichtung (25) vorhanden ist, die sich über den gesamten Umfang des Dichtungselements (14) erstreckt.
  7. Deckel für einen Metallbehälter nach Anspruch 1 oder 5 oder 6, dadurch gekennzeichnet, dass die erste Hilfsdichtung (20) und die zweite Hilfsdichtung (21) und die dritte Hilfsdichtung (25) aus geschlossenzelligem geschäumtem Kunststoff bestehen.
  8. Deckel für einen Metallbehälter nach einem beliebigen der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Dichtungselement (14) aus dem gleichen Material wie das Kunststoffumfangsteil (7) besteht und einen festen Bestandteil davon bildet.
  9. Deckel nach einem beliebigen der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Außenumfang (6') des Metallmittelteils (6) innerhalb des Kunststoffumfangsteils (7) gegossen ist.
  10. Verwendung eines Deckels (5) nach einem beliebigen der vorstehenden Ansprüche 1 bis 9 zum Verschließen eines mit einer gerollten Mündung (3) versehenen Metallbehälters (1), wobei eine Rollkante (3) der Mündung (2) des Metallbehälters (1) in einer Rille (11) positioniert wird, die durch einen äußeren Umfangsabschnitt (8), Innenumfangsabschnitt (9) und Brückenabschnitt (10) eines Umfangsteils (7) des Deckels (5) definiert ist, die sich nach unten öffnet, und ein Dichtungselement (14) gegen den Innenumfang des Behälters (1) positioniert wird.
EP16168536.7A 2015-06-24 2016-05-06 Abdeckung für metallbehälter Active EP3109180B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20155493 2015-06-24

Publications (2)

Publication Number Publication Date
EP3109180A1 EP3109180A1 (de) 2016-12-28
EP3109180B1 true EP3109180B1 (de) 2019-12-04

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464086A (de) *
DE180545C (de) * 1905-06-24 1907-01-29 Deckelverschluß für Standgefäße
US2674390A (en) * 1950-03-31 1954-04-06 Leer S Curacao N V Van Joint or closure
DE843379C (de) * 1950-09-08 1952-07-07 Albert Geiger Verschluss fuer Vorratsbehaelter
US3782575A (en) * 1972-03-06 1974-01-01 T Braun Safety closure
US4718571A (en) * 1987-03-27 1988-01-12 Bordner Paul G Molded lid assembly with primary and secondary latching features
DE8814972U1 (de) 1988-12-01 1990-04-12 Karl Huber Verpackungswerke Gmbh + Co, 7110 Oehringen, De
CA2163306C (en) * 1995-11-20 2001-02-06 Prajak Jiradejnunt Container
US5868273A (en) * 1996-10-11 1999-02-09 Dart Industries Inc. Canister with pressure resistant sealing lid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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