EP0456749A1 - Lid for a container. - Google Patents

Lid for a container.

Info

Publication number
EP0456749A1
EP0456749A1 EP19900903322 EP90903322A EP0456749A1 EP 0456749 A1 EP0456749 A1 EP 0456749A1 EP 19900903322 EP19900903322 EP 19900903322 EP 90903322 A EP90903322 A EP 90903322A EP 0456749 A1 EP0456749 A1 EP 0456749A1
Authority
EP
European Patent Office
Prior art keywords
lid
container
flange
encircling
area
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.)
Granted
Application number
EP19900903322
Other languages
German (de)
French (fr)
Other versions
EP0456749B1 (en
Inventor
Carsten Lund
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.)
PANTHER PLAST
Original Assignee
PANTHER PLAST
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PANTHER PLAST filed Critical PANTHER PLAST
Priority to AT90903322T priority Critical patent/ATE96752T1/en
Publication of EP0456749A1 publication Critical patent/EP0456749A1/en
Application granted granted Critical
Publication of EP0456749B1 publication Critical patent/EP0456749B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D43/0212—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
    • B65D45/00—Clamping or other pressure-applying devices for securing or retaining closure members
    • B65D45/02—Clamping or other pressure-applying devices for securing or retaining closure members for applying axial pressure to engage closure with sealing surface
    • B65D45/30—Annular members, e.g. with snap-over action or screw-threaded
    • 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
    • B65D2543/00444—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
    • B65D2543/00481—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
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/00629—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
    • B65D2543/00601—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
    • 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
    • B65D2543/00833—Integral tabs, tongues, handles or similar
    • B65D2543/00842—Integral tabs, tongues, handles or similar outside of the lid
    • 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
    • B65D2543/00953—Sealing means
    • B65D2543/0099—Integral supplemental sealing lips

Definitions

  • the invention relates to a lid for a container of the kind indicated in the preamble of claim 1.
  • Plastic lids of this kind are used for closing containers, preferably plastic containers, which on the outside below the rim have a wholly or partly encircling flange for securing i:he lid.
  • lids normally have to fit closely and it is demanded that it should be possible to remove the lid without recourse to tools. Furthermore the lid has to be designed in such a way that it may be put back in place in ord ⁇ r for the container to be reclosed. It must be possible to open and reclose the con ⁇ tainer a certain number of times until the container is empty, without reduction of the strength and tightness.
  • the object of the invention is to indicate a container, lid of the above mentioned kind in which the desired qualities with regard to tightness and reclosability are achieved in a new way without risk of undesired by-effects.
  • the container lid according to the invention as indicated in the characterizing part of claim 1.
  • the opening and closing is effected by a ⁇ movement in a vertical direction, i. e. in the axial direction of the container so that the edge of the flange will not be stretched resulting in a very great annular tension, as is often the case in the conventional constructions.
  • the special advantages of the invention are remarkable, as the stretching of the outer edge of the lid is avoided immediately before the flange is to engage with the locking rim of the container.
  • the container lid according to the invention is preferably designed as indicated in the characterizing part of claim 2.
  • an embodiment is achieved which is easy to produce and in which the lid flange functions as a kind of double hinge. It is generally known to produce easily bendable areas by narrowing down the thickness of material in such a way that a weakened area is created, f. inst. if the lid is injection molded from polypropylene or similar plastic materials.
  • the easily bendable ares or parts can be made or produced in other ways, f. inst. by reducing the stiffness of the material by perfora ⁇ tions or similar means, but they are preferably produced by reducing the thickness of the material.
  • the container lid according to the invention as indicated in the characterizing part of claim 7, it is ren ⁇ dered possible to remove the lid by a comparatively small movement of the encircling, downwards protruding flange of the lid and with a correspondingly small bending of the weakened areas. Besides, mounting and remounting of the lid on the con ⁇ tainer is possible without any substantial deformation of the lid, so that the desired complete tightness is achieved imme ⁇ diately.
  • the outer part of the flange of the lid will rock a little outwards at the outer weakened area, i. e. approximately at the middle of the lid flange or the jacket, and this further assists in facilitating the removal of the lid.
  • The. locking bead of the lid only has to be free of the outer edge of the container flange for the lid to be remo ⁇ ved freely.
  • the container lid according to the invention is designed as indicated in the characterizing part of claim 9, i£ is achie ⁇ ved that one of the weakened areas is situated exactly where the moment is the greatest during the removal of the lid, whereby less force has to be applied for the removal of the lid than would be the case if the weakened area was placed further out on the flange of the lid.
  • the container lid according to the invention is designed as indicated in the characterizing part of claim 10, the encirc ⁇ ling upper edge of the lid will also be moved a little upwards during the removal of the lid so that the necessary movement of the flange of the lid will be distributed to all the parts. Hereby the removal of the lid is facilitated and simplified.
  • the invention is explained further in relation to a preferred embodiment shown in the drawing, in which
  • fig. 1 shows the upper part of a container with a lid accor ⁇ ding to the invention, partly as a side view and partly as a sectional view,
  • fig. 2 is a radial part section through the edge of the con- tainer and the lid on a larger scale
  • fig. 3 is a radial part section through the edge of the con ⁇ tainer and the lid according to a second embodiment of the invention.
  • fig. 4 shows the same as fig. 3, but with the lid free of the container.
  • a container lid 1 according to the invention is put on a plastic container 2 which has en encircling, annular flange 5, which is engaging the flange of the lid which in the embodiment shown comprises two encircling flange parts 8 and 9, the lower flange part having an internal encircling locking bead 10 which may be snapped under the lower edge of the con- tainer flange.
  • fig. 2 shows a radial part section through the edge on a larger scale.
  • Fig. 2 shows in a full line the container lid on the container 2 and in a dot-dash-dot line the container lid when the flange is free of the container.
  • the container 2 comprises a comparatively sharp sealing edge 3 at the mouth of the container, and an annular flange 5 below this which is cast integral with the container and which flange is terminated downwards by a locking edge 6.
  • a suitable stiffness to the flange 5 evenly spaced radial ribs 14 are cast integral with the container.
  • a container lid 1 of elastically deformable plastic has an en ⁇ circling flange part which comprises an upper edge part 7 and in continuation hereof two flange parts, i. e. an upper flange part 8 and a lower flange part 9, connected by narrowed down parts or weakened lines 11, 12.
  • the lid is injection molded as an integral unit.
  • the edge area 6 is provided with a downwards turned, axial guiding rib 4 which is contacting the outer surface of the container, and which together with the part of the container lid 1, which is contacting the inner surface of the container, forms the closure and seal between the lid and the container.
  • the upper narrowed down part 11 is formed from the inside, so that the upwards turned sealing edge area has an even, smooth surface, and the lower narrowed down part 12 is formed from the outside as shown in the drawing.
  • the lower flange part 9 ends in a periferal terminal edge 13 which is rounded and, as shown, turned slightly outwards so that it forms a gripping edge which is easy to grip with the fingers when the lid has to be removed.
  • the area 15 may be used during the removal of the lid, as f. inst. the thumb is placed against the area 15 and the rest of the fingers are gripping under the edge 13 of the lid.
  • the edge of the lid is then lifted so that the locking bead 10 is freed from the flange edge 6 and the lid is slipped from the position, which is shown in a full line, to the position, which is shown in a dot-and-dash line.
  • This parallel displacement of the flange of the lid results in that only the upper flange part 8 and the two weakened lines 11 and 12 are deformed.
  • the lower flange part 9 is by and large not deformed, neither when opening the lid, nor when closing it. Stretching of the edge area 13 during the closing proces is hereby avoided, and the annular tension built into the flange part 9 is preserved fully so that the locking bead 10 will engage the locking edge 6 without problems.
  • Figs. 3 and 4 show another enbodiment of the container lid according to the invention.
  • the flange of the lid is in this enmbodiment divided into three encircling areas. I. e. in one substantially radial area 8 and two areas 9 and 16 which are substantially axial in relation to the container 2.
  • the three areas are hinged together and hinged to the edge part 7 of the lid proper 1 by means of intergral hinges or encircling weakened areas, 11', 17, 12, of which the weakened areas closest to the lid proper, i. e. 11' and 17, are formed on the surface of the flange of the lid which is turned inwards towards the container, and the outermost weakened area 12 is formed on the outwards turned surface of the flange of the lid.
  • Fig. 3 shows that the flange of the lid during the removal of the container lid makes a much smaller movement than in the embodiment shown in fig. 2, as the movement is distributed among all three encircling parts. As soon as the bead 10 has been shifted to the upper side of the locking edge 5 the lid may be freely removed.
  • Fig. 4 shows the lid free of the container 2.
  • the lid is mol ⁇ ded in this shape and therefore fig. 4 also shows the lid during its application.
  • the lid is snapped on the container 2 by pressing the upper surface of the lid lightly, as the locking bead 10 without violent deformations or great increa ⁇ ses of the annular tension in the bead 10 is pushed down under the locking edge 6, thereby ensuring full tightness immediate ⁇ ly after the mounting of the lid.

Abstract

Le couvercle pour récipient décrit (1), qui est en plastique élastique déformable, comporte un rebord périphérique qui est destiné à se cramponner sur le bord du bec d'un récipient (2), lequel est pourvu d'un rebord périphérique externe (5), de sorte que le rebord du couvercle se cramponne sous tension sur le rebord du récipient. Le rebord du couvercle se compose de deux sections périphériques (8, 9) séparées par des régions pliables.The described container cover (1), which is made of deformable elastic plastic, has a peripheral rim which is intended to cling to the edge of the spout of a container (2), which is provided with an external peripheral rim (5 ), so that the rim of the lid clings under tension to the rim of the container. The edge of the cover consists of two peripheral sections (8, 9) separated by foldable regions.

Description

LID FOR A CONTAINER
The invention relates to a lid for a container of the kind indicated in the preamble of claim 1.
Plastic lids of this kind are used for closing containers, preferably plastic containers, which on the outside below the rim have a wholly or partly encircling flange for securing i:he lid.
Such lids normally have to fit closely and it is demanded that it should be possible to remove the lid without recourse to tools. Furthermore the lid has to be designed in such a way that it may be put back in place in ord§r for the container to be reclosed. It must be possible to open and reclose the con¬ tainer a certain number of times until the container is empty, without reduction of the strength and tightness.
Several container lids are known by which the above mentioned qualities are aimed at, f. inst. from DK patents no. 145.194 and 154.549.
The object of the invention is to indicate a container, lid of the above mentioned kind in which the desired qualities with regard to tightness and reclosability are achieved in a new way without risk of undesired by-effects.
This object will be achieved by designing the container lid according to the invention as indicated in the characterizing part of claim 1. By dividing the flange of the lid into more than one encircling area the opening and the reclosing is made possible without stretching the flange of the lid in the area of the edge. The opening and closing is effected by a^movement in a vertical direction, i. e. in the axial direction of the container so that the edge of the flange will not be stretched resulting in a very great annular tension, as is often the case in the conventional constructions. Especially in the case of reclosing, the special advantages of the invention are remarkable, as the stretching of the outer edge of the lid is avoided immediately before the flange is to engage with the locking rim of the container.
The container lid according to the invention is preferably designed as indicated in the characterizing part of claim 2. Hereby an embodiment is achieved which is easy to produce and in which the lid flange functions as a kind of double hinge. It is generally known to produce easily bendable areas by narrowing down the thickness of material in such a way that a weakened area is created, f. inst. if the lid is injection molded from polypropylene or similar plastic materials.
It is obvious for a person skilled in the art that the easily bendable ares or parts can be made or produced in other ways, f. inst. by reducing the stiffness of the material by perfora¬ tions or similar means, but they are preferably produced by reducing the thickness of the material.
By designing the container lid according to the invention as indicated in the characterizing part of claim 3, a solid and precise positioning of the flange in its locked state is acheived resulting in a strong and solid securing of the lid, which can only be removed by lifting the locking bead free of the container flange and then shifting the lower part of the encircling flange parts upwards.
By designing the container lid according to the invention as indicated in the characterizing parts of claim 4 or claim 5, an embodiment of the weakened areas is achieved which assists in making the flange parts move as desired and in such a way that the lower flange part substantially forms the same angle to the plane of the lid, both when the lid is removed and when it is on and during the intervening movement. By designing the container according to the invention as indicated in the characterizing part of claim 6, a gripping edge is formed which simplifies the removal of the lid.
By designing the container lid according to the invention as indicated in the characterizing part of claim 7, it is ren¬ dered possible to remove the lid by a comparatively small movement of the encircling, downwards protruding flange of the lid and with a correspondingly small bending of the weakened areas. Besides, mounting and remounting of the lid on the con¬ tainer is possible without any substantial deformation of the lid, so that the desired complete tightness is achieved imme¬ diately.
If the container lid is designed as indicated in the characte¬ rizing part of claim 8, the outer part of the flange of the lid will rock a little outwards at the outer weakened area, i. e. approximately at the middle of the lid flange or the jacket, and this further assists in facilitating the removal of the lid. The. locking bead of the lid only has to be free of the outer edge of the container flange for the lid to be remo¬ ved freely.
If the container lid according to the invention is designed as indicated in the characterizing part of claim 9, i£ is achie¬ ved that one of the weakened areas is situated exactly where the moment is the greatest during the removal of the lid, whereby less force has to be applied for the removal of the lid than would be the case if the weakened area was placed further out on the flange of the lid.
If the container lid according to the invention is designed as indicated in the characterizing part of claim 10, the encirc¬ ling upper edge of the lid will also be moved a little upwards during the removal of the lid so that the necessary movement of the flange of the lid will be distributed to all the parts. Hereby the removal of the lid is facilitated and simplified. The invention is explained further in relation to a preferred embodiment shown in the drawing, in which
fig. 1 shows the upper part of a container with a lid accor¬ ding to the invention, partly as a side view and partly as a sectional view,
fig. 2 is a radial part section through the edge of the con- tainer and the lid on a larger scale,
fig. 3 is a radial part section through the edge of the con¬ tainer and the lid according to a second embodiment of the invention, and
fig. 4 shows the same as fig. 3, but with the lid free of the container.
In fig. 1 a container lid 1 according to the invention is put on a plastic container 2 which has en encircling, annular flange 5, which is engaging the flange of the lid which in the embodiment shown comprises two encircling flange parts 8 and 9, the lower flange part having an internal encircling locking bead 10 which may be snapped under the lower edge of the con- tainer flange.
The invention is explained more closely in the following with reference to fig. 2 which shows a radial part section through the edge on a larger scale. Fig. 2 shows in a full line the container lid on the container 2 and in a dot-dash-dot line the container lid when the flange is free of the container.
The container 2 comprises a comparatively sharp sealing edge 3 at the mouth of the container, and an annular flange 5 below this which is cast integral with the container and which flange is terminated downwards by a locking edge 6. To impart a suitable stiffness to the flange 5, evenly spaced radial ribs 14 are cast integral with the container.
A container lid 1 of elastically deformable plastic has an en¬ circling flange part which comprises an upper edge part 7 and in continuation hereof two flange parts, i. e. an upper flange part 8 and a lower flange part 9, connected by narrowed down parts or weakened lines 11, 12. The lid is injection molded as an integral unit.
The edge area 6 is provided with a downwards turned, axial guiding rib 4 which is contacting the outer surface of the container, and which together with the part of the container lid 1, which is contacting the inner surface of the container, forms the closure and seal between the lid and the container.
The upper narrowed down part 11 is formed from the inside, so that the upwards turned sealing edge area has an even, smooth surface, and the lower narrowed down part 12 is formed from the outside as shown in the drawing. The lower flange part 9 ends in a periferal terminal edge 13 which is rounded and, as shown, turned slightly outwards so that it forms a gripping edge which is easy to grip with the fingers when the lid has to be removed.
The area between the edge part 7 and the part of the container lid, which is placed inside the container, preferably 'has a rounded edge 15. Hereby the area 15 may be used during the removal of the lid, as f. inst. the thumb is placed against the area 15 and the rest of the fingers are gripping under the edge 13 of the lid. The edge of the lid is then lifted so that the locking bead 10 is freed from the flange edge 6 and the lid is slipped from the position, which is shown in a full line, to the position, which is shown in a dot-and-dash line. This parallel displacement of the flange of the lid results in that only the upper flange part 8 and the two weakened lines 11 and 12 are deformed. The lower flange part 9 is by and large not deformed, neither when opening the lid, nor when closing it. Stretching of the edge area 13 during the closing proces is hereby avoided, and the annular tension built into the flange part 9 is preserved fully so that the locking bead 10 will engage the locking edge 6 without problems.
Both during opening and reclosing of the container lid the angle a between the lower flange part and the plane of the lid is maintained, while the part of the flange, which is consti¬ tuted by the upper flange part 8, rocks around the weakened line 11. The upper flange part 8, however, has no other pur¬ pose than to function as a kind of double hinge, as the tightening and securing of the lid is established by other parts of the container lid. In this way the tightening, rocking and securing of the lid has been distributed to diffe- rent parts of the edge of the lid. This makes it possible to maintain the qualities of the lid even after having opened and closed it repeatedly.
Figs. 3 and 4 show another enbodiment of the container lid according to the invention.
The flange of the lid is in this enmbodiment divided into three encircling areas. I. e. in one substantially radial area 8 and two areas 9 and 16 which are substantially axial in relation to the container 2. The three areas are hinged together and hinged to the edge part 7 of the lid proper 1 by means of intergral hinges or encircling weakened areas, 11', 17, 12, of which the weakened areas closest to the lid proper, i. e. 11' and 17, are formed on the surface of the flange of the lid which is turned inwards towards the container, and the outermost weakened area 12 is formed on the outwards turned surface of the flange of the lid.
Otherwise the same references have been applied as in the pre- vious figures.
Fig. 3 shows that the flange of the lid during the removal of the container lid makes a much smaller movement than in the embodiment shown in fig. 2, as the movement is distributed among all three encircling parts. As soon as the bead 10 has been shifted to the upper side of the locking edge 5 the lid may be freely removed.
Fig. 4 shows the lid free of the container 2. The lid is mol¬ ded in this shape and therefore fig. 4 also shows the lid during its application. The lid is snapped on the container 2 by pressing the upper surface of the lid lightly, as the locking bead 10 without violent deformations or great increa¬ ses of the annular tension in the bead 10 is pushed down under the locking edge 6, thereby ensuring full tightness immediate¬ ly after the mounting of the lid.
It is apparent from figs. 3 and 4 that the narrowed down part 11' is placed where the moment in the flange of the lid will be the greatest when the lid is actuated for removal, i. e. as close to the reinforcement rib 4 as possible.
Furthermore, it is apparent from fig. 3 that no regular paral¬ lel displacement of the outer flange part 9 takes place in this embodiment, but that the flange part is rocked slightly outwards during the removal which helps to reduce the energy consumption required to lift the locking bead 10 free of the locking edge 6. This is achieved without on the Other hand making the lid too easily removable, f. inst. due to shock impacts or during transport.

Claims

C L I M S
1. Container lid (1) of elastic, deformable plastic and with an encircling lid flange (8, 9) which is designed to engage around the rim (3) of the mouth of a container (2), which con¬ tainer lid is provided with an external container flange (5), and which lid flange clasps the container flange under tension when the lid is mounted on the container, c h a r a c t e ¬ r i z e d in that the lid flange is divided into more than one encircling part (8, 9) by means of bendable areas (11, 12).
2. Container lid according to claim 1, c h a r a c t e ¬ r i z e d in that the lid flange is divided into two encirc- ling parts (8, 9) which are connected to the container lid by a first encircling weakened area (11) and are connected to each other by a second encircling weakened area (12).
3. Container lid according to claims 1 or 2, c h a r a c - t e r i z e d in that one of the encircling parts (9) of the lid flange has an annular, inwards turned locking bead (10) arranged to bear against a downwards turned edge (6) of the container flange (5).
4. Container lid according to claims 2 or 3, c h a r a c ¬ t e r i z e d in that the first encircling weakened area (11) is formed on the inside of the lid flange.
5. Container lid according to claims 2 or 3, c h a r a c - t e r i z e d in that the second encircling weakened area
(12) is formed on the outside of the lid flange.
6. Container lid according to any of the claims 1-5, c h a ¬ r a c t e r i z e d in that the periferal terminal edge (13) of the lid flange is curved outwards and is rounded.
7. Container lid according to claim 1, c h a r a c t e - r i z e d in that the lid flange is divided into three en¬ circling parts (8, 9, 16) which are connected to the lid (1) by a first encircling weakened area (11') and are connected to each other by a second (12) and a third (17) encircling weake- ned area.
8. Container lid according to claim 7, c h a r a c t e ¬ r i z e d in that the first (11') and the third (17) weakened areas are formed on the inside of the lid flange, and that the second weakened area (12) is formed on the outside of the lid flange.
9. Container lid according to claim 8 and in which the lid flange comprises an annular reenforcement rib (4) which is arranged to engage with the rim (3) of the container mouth, c h a r a c t e r i z e d in that the first weakened area (11') is placed directly outside the reenforcement rib (4).
10. Container lid according to claims 8 or 9 and in which the lid flange, when the lid (1) is mounted on the container (2), . comprises a substantially radial, encircling area (8) and a substantially axial, encircling area (9, 16), c h a r a c ¬ t e r i z e d in that the inwards turned weakened areas (11', 17) are placed in the radial area and in the connecting area between the radial and the axial areas.
EP19900903322 1989-02-10 1990-02-09 Lid for a container Expired - Lifetime EP0456749B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90903322T ATE96752T1 (en) 1989-02-10 1990-02-09 CONTAINER LID.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK65589A DK160701C (en) 1989-02-10 1989-02-10 container lid
DK655/89 1989-02-10

Publications (2)

Publication Number Publication Date
EP0456749A1 true EP0456749A1 (en) 1991-11-21
EP0456749B1 EP0456749B1 (en) 1993-11-03

Family

ID=8096028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900903322 Expired - Lifetime EP0456749B1 (en) 1989-02-10 1990-02-09 Lid for a container

Country Status (5)

Country Link
EP (1) EP0456749B1 (en)
AU (1) AU5101490A (en)
DE (1) DE69004420T2 (en)
DK (1) DK160701C (en)
WO (1) WO1990009329A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK171723B1 (en) * 1994-11-25 1997-04-14 Erik Bock Drop resistant plastic lid for container
FR2783241B1 (en) * 1998-09-15 2000-12-22 Allibert Sa LID WITH LOCKING HANDLE FOR CLOSING A STORAGE CONTAINER
AU2006200114B2 (en) * 2005-03-31 2009-05-21 Innovative Design Co Pty Ltd Container closure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831797A (en) * 1972-10-02 1974-08-27 P Stevens Child resistant safety closure
SE8005182L (en) * 1980-07-16 1982-01-17 Tetra Pak Dev PACKAGING CONTAINER CLOSING DEVICE
US4376493A (en) * 1980-09-19 1983-03-15 Sears, Roebuck And Co. Lockable closure for containers
DK145194C (en) * 1980-11-20 1983-02-28 Superfos As CONTAINER COVER OF ELASTIC DEFORMABLE PLASTIC

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9009329A1 *

Also Published As

Publication number Publication date
DE69004420D1 (en) 1993-12-09
DK160701B (en) 1991-04-08
DK65589D0 (en) 1989-02-10
EP0456749B1 (en) 1993-11-03
DK65589A (en) 1990-08-11
DE69004420T2 (en) 1994-05-19
DK160701C (en) 1991-09-23
AU5101490A (en) 1990-09-05
WO1990009329A1 (en) 1990-08-23

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