EP0758614A1 - Joint étanche pour récipient et couvercle en plastique - Google Patents

Joint étanche pour récipient et couvercle en plastique Download PDF

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Publication number
EP0758614A1
EP0758614A1 EP96305785A EP96305785A EP0758614A1 EP 0758614 A1 EP0758614 A1 EP 0758614A1 EP 96305785 A EP96305785 A EP 96305785A EP 96305785 A EP96305785 A EP 96305785A EP 0758614 A1 EP0758614 A1 EP 0758614A1
Authority
EP
European Patent Office
Prior art keywords
channel
projection
lid
container
pack
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.)
Withdrawn
Application number
EP96305785A
Other languages
German (de)
English (en)
Inventor
Daryl John Thompson
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.)
Penlea Plastics Ltd
Original Assignee
Penlea Plastics Ltd
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 Penlea Plastics Ltd filed Critical Penlea Plastics Ltd
Publication of EP0758614A1 publication Critical patent/EP0758614A1/fr
Withdrawn legal-status Critical Current

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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
    • B65D43/0206—Removable lids or covers without integral tamper element secured by snapping over beads or projections inside a peripheral U-shaped channel in 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
    • B65D2543/00018—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
    • B65D2543/00259—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
    • B65D2543/00453—Contact between the container and the lid in a peripheral U-shaped channel of the container
    • B65D2543/00462—Contact between the container and the lid in a peripheral U-shaped channel of the container peripheral U-shaped channel 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
    • B65D2543/00444—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
    • B65D2543/00527—NO contact
    • 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
    • B65D2543/00546—NO contact
    • 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
    • B65D2543/00657—U-shaped or inverted U
    • 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
    • B65D2543/00768—U-shaped or inverted U
    • 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 present invention is a sealed pack in the form of a container and a lid for the container.
  • Such packs may be exemplified by, but are not limited to, transparent packs of this type used for transporting and/or displaying food products.
  • packs used for food products require to be secure against leakage of liquid from within the pack.
  • the lid of the pack may be heat-sealed to the base.
  • packs have been developed having continuous leakproof mechanical seals in the region of their circumference.
  • Leakproof seals of this latter type have consisted of a continuous projection on the lid or base of the pack inserted into a continuous channel on the base or lid.
  • the projection and channel have been designed to be a very close fit together with the aim of preventing all passage of liquid past the seal.
  • close-fitting seals have given rise to two significant disadvantages. Firstly, it has been found that liquid tends to leach by capillary action past two closely-engaging plastics surfaces, in spite of the mechanical integrity of the seal. Secondly, when the contents of the pack are to be used, it has often proved difficult to separate the lid from the base, especially when the user has limited capacity for gripping these two components, as in the case of an arthritic user.
  • An object of the present invention is to provide an improved pack, by means of which some at least of the disadvantages of prior packs are reduced or overcome, and which is devised to limit or prevent inward or outward passage of air or gas.
  • the pack according to the present invention comprises a container and a lid therefor, each of which is made of a resilient synthetic polymeric material, a continuously curved channel in the region of the circumference of either the lid or the container and a continuously curved projection in the region of the circumference of the other of the lid and the container and adapted to engage said channel, the surface of the projection which faces the channel when the two are engaged being flat and the innermost surface of the channel which faces the projection when the two are engaged also being flat, the height of the projection relative to the depth of the channel being such that said two surfaces abut each other closely when the projection and the channel are engaged, the lateral width of said projection surface being less than the lateral width of said channel innermost surface, and the lateral width of said projection overall being greater than the lateral inner width of the channel at its widest point.
  • the container and lid of the pack are each made of a resilient synthetic polymeric material but need not be made of the same material.
  • the material must be at least to some extent resilient because the effectiveness of the seal depends upon relative distortion of the projection and the channel.
  • Suitable materials include polyvinyl chlorides (PVC's), polypropylenes and polystyrenes, if desired in dissimilar combinations, for example a PVC base with a polypropylene lid.
  • the projection may be located on the lid and the channel on the container or vice versa.
  • the terms “lid” and “container” may be regarded as interchangeable, in the sense that a flat base with an upstanding lid may be inverted to form a deep container with a flat lid.
  • Both the projection and the channel must be continuously curved, without therefore having any angular changes of direction or any corners.
  • the container and lid need not be generally circular but may be shaped to reflect the nature of the intended contents or for aesthetic reasons.
  • these two components may indeed be generally circular in plan, they may also be elliptical, or generally rectangular but with smoothly curving "corners", or any other continuously curved shape.
  • the two interengaging surfaces of the projection and channel are both flat but the surface of the projection is narrower than that of the channel. As a result, a space is formed within the channel along each side of the projection. These two spaces each interrupt the face-to-face contact of the projection and channel and prevent leaching of liquid by capillary action between the surfaces.
  • the assembling of the pack is easier than with prior available packs. By virtue of these foregoing features, opening of the pack when the contents are to be used is also significantly easier.
  • the overall width of the projection is greater than the maximum internal width of the channel, one or both of those features must distort to enable the channel to accommodate the projection. As indicated above, this necessary distortion contributes to the efficiency of the seal.
  • the pack of which the seal is illustrated is formed of a PVC base and a polypropylene lid, both of which are circular in plan.
  • a continuous projection 10 extends upwardly from the base within the region of the outer perimeter 11 of the base. As shown in Fig. 1, the cross-section of the projection 10 increases upwardly to a level 12 slightly below the mid-point of the height of the projection and then reduces towards a flat top surface 13.
  • a continuous channel 14 is formed around the lid within the region of the outer perimeter 15 of the lid. As shown in Fig. 2, the cross-section of the channel 14 increases away from the continuous opening 18 of the channel to a level 16 at about three-quarters of the depth of the channel and then reduces towards a flat inner surface 17.
  • the surface 13 of the projection 10 is narrower than the surface 17 of the channel 14. Thus, when the projection 10 is introduced into the channel via the opening 18 and the surfaces 13 and 17 abut each other, a space 19, 20 (Fig. 3) remains at each side of the projection.
  • Fig. 3 illustrates the relative dimensions of the projection 10 and the channel 14, with the projection being shown in broken line.
  • the projection cannot fit within the channel without distortion, which in practice has been found to occur, although the precise position and distribution of the distortion has not yet been identified.
  • the break line at 12 along the outsides of the projection 10 forms a continuous liquid barrier where it contacts the inner face of the channel 14 on both sides of the projection.
  • any liquid or gas which may tend to escape from the container must first, having entered the channel 14, pass the liquid barrier at 12 and then traverse the space 19. It must then pass in some way between the abutting surfaces 13 and 17, traverse the space 20 and finally pass the second liquid barrier at 12 on the radially outer side of the projection 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
EP96305785A 1995-08-12 1996-08-06 Joint étanche pour récipient et couvercle en plastique Withdrawn EP0758614A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9516562 1995-08-12
GBGB9516562.7A GB9516562D0 (en) 1995-08-12 1995-08-12 Sealed pack

Publications (1)

Publication Number Publication Date
EP0758614A1 true EP0758614A1 (fr) 1997-02-19

Family

ID=10779158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96305785A Withdrawn EP0758614A1 (fr) 1995-08-12 1996-08-06 Joint étanche pour récipient et couvercle en plastique

Country Status (2)

Country Link
EP (1) EP0758614A1 (fr)
GB (2) GB9516562D0 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7011277B2 (ja) * 2016-02-03 2022-01-26 シーピー化成株式会社 包装用容器の内外嵌合構造及びそれを備えた包装用容器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1446424A (en) * 1972-07-28 1976-08-18 Tup Panama Sa Moulded plastic containers
EP0033266A1 (fr) * 1980-01-23 1981-08-05 Societe D'exploitation Des Etablissements Vulliez Procédé de sertissage, notamment pour emballage plastique, et emballage étanche obtenu par ce procédé
DE3110057A1 (de) * 1980-03-17 1982-01-07 Holmia A/S, 6000 Kolding Kunststoffemballage, bestehend aus einem behaelter und einem deckel
EP0506295A1 (fr) * 1991-03-26 1992-09-30 Oscar Mayer Foods Corporation Emballage refermable pour produits alimentaires

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4986438A (en) * 1990-04-03 1991-01-22 Placon Corporation Recloseable nesting tab container
US5607709A (en) * 1991-11-27 1997-03-04 Tenneco Plastics Company Disposable microwavable food container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1446424A (en) * 1972-07-28 1976-08-18 Tup Panama Sa Moulded plastic containers
EP0033266A1 (fr) * 1980-01-23 1981-08-05 Societe D'exploitation Des Etablissements Vulliez Procédé de sertissage, notamment pour emballage plastique, et emballage étanche obtenu par ce procédé
DE3110057A1 (de) * 1980-03-17 1982-01-07 Holmia A/S, 6000 Kolding Kunststoffemballage, bestehend aus einem behaelter und einem deckel
EP0506295A1 (fr) * 1991-03-26 1992-09-30 Oscar Mayer Foods Corporation Emballage refermable pour produits alimentaires

Also Published As

Publication number Publication date
GB2304097B (en) 1999-03-31
GB9516562D0 (en) 1995-10-11
GB9616496D0 (en) 1996-09-25
GB2304097A (en) 1997-03-12

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Effective date: 19970820