EP0699161A1 - Tamper-evident lid for plastic containers - Google Patents
Tamper-evident lid for plastic containersInfo
- Publication number
- EP0699161A1 EP0699161A1 EP94916193A EP94916193A EP0699161A1 EP 0699161 A1 EP0699161 A1 EP 0699161A1 EP 94916193 A EP94916193 A EP 94916193A EP 94916193 A EP94916193 A EP 94916193A EP 0699161 A1 EP0699161 A1 EP 0699161A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- peripheral portion
- seal according
- outer peripheral
- protrusions
- lid
- 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
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
- B65D43/0235—Removable lids or covers with integral tamper element
- B65D43/0237—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element
- B65D43/0256—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element only on the outside, or a part turned to the outside, of the mouth of the container
- B65D43/0258—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element only on the outside, or a part turned to the outside, of the mouth of the container leaving friction on both the inside and the outside after removal of the tamper element
-
- 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
- B65D2401/00—Tamper-indicating means
- B65D2401/15—Tearable part of the closure
-
- 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
- B65D2543/00648—Flange or lip
-
- 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
- B65D2543/00694—Segments
-
- 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
- B65D2543/00777—Hole
-
- 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
- B65D2543/00805—Segments
Definitions
- the present invention relates to a tamper-evident seal for plastic containers of the type that includes a tray with side and bottom surfaces and a lid with a substantially flat wall , wherein the tray and the lid have respective complementarily shaped edges with a peripheral external po rt ion that i s subs tant i a l ly vert i ca l o r s l i gh t ly inclined with respect to the vertical .
- Tamper-evident seals of the type described above are known which are particularly suitable for containers that have a generally rectangular or polygonal plan shape.
- These known seals include one or more pairs of engagement parts, for example shaped like pins with arrow-shaped tips that engage in complementarily shaped elastic cavities, arranged along the edges of the tray and of the container respectively at the corners of the container.
- These engagement parts are adapted to cooperate unidirectionally when closing the container, so that in order to release the lid it is necessary to break them, i.e. separate them from the corresponding portion of the tray or lid by levering between them or by acting on adapted grip wings.
- one of the engagement parts after opening, can remain loosely attached to the corresponding edge, and may accidentally fall inside the container.
- the aim of the present invention is to el iminate the drawbacks described above by providing a tamper-evident seal that can be applied on containers of any shape without altering the outer profile of the tray or of the lid.
- An object is to provide a tamper-evident seal that can be produced indifferently with a process for the molding of thermoplastic sheets or for the inj ection-mo lding of melted plastic material , so as to achieve savings in production.
- Another object is to provide a tamper-evident seal that extends along the entire circumference of the lid and must be removed completely to allow to open the container.
- a tamper-evident seal for plastic containers of the type which includes a tray with side and bottom surfaces, and a lid with a substantially flat wall, the tray and the lid having respective complementarily shaped edges with an outer peripheral portion that is substantially vertical or slightly inclined, characterized in that it comprises a first engagement means which is distributed along the outer peripheral portion of one of the edges and is suitable to elastically and unidirectionally couple by pressing within a second complementarily shaped engagement means which is distributed along the outer peripheral portion of the other one of the edges.
- the seal can be applied to containers having any shape, for example a circular one, since it is not necessary to have a corner or a protrusion of the edges in order to place the engagement parts .
- the engagement means is distributed along the entire circumference of the closing edges, with greater assurance of a hermetic seal. Finally, any tampering with the seal is clearly evident on the outside by virtue of the peripheral position of the engagement means .
- the first engagement means can be constituted by a series of protrusions which are substantially radial with respect to the outer peripheral portion of the edge on which they are formed.
- the protrusions consist of a plurality of teeth which are slightly inclined outward and are approximately shaped like a trapezium, with the longer parallel side directed inward, and are formed monolithically with the corresponding outer peripheral portion in angularly equidistant positions along its extension.
- the second engagement means can be constituted by a series of openings which are substantially parallel to the outer peripheral portion of the edge on which they are formed.
- the openings are formed by a strip of material which is joined to the corresponding edge by a series of transverse wings that are at least equal in height to the maximum thickness of the protrusions, in angularly equidistant positions that match those of the protrusions.
- the wings taper upward at the region where they are connected to the outer peripheral portion of the corresponding edge, and the connection region has a smaller tear-resistant cross-section than the region for connection to the strip.
- the strip can have a substantially radial grip tab with a transverse cross- section that is at least equal to the maximum cross- section of the wings, and has a transverse notch in a position which is adjacent to a lateral corner of the grip tab so as to form a region for the prefracture and initial breaking of the strip and for the subsequent separation of the wings from the peripheral portion of the edge to which it is connected.
- both the tray and the lid can be obtained indifferently with an injection-molding process or with a process for the forming of plastic sheets, ensuring the same mechanical strength as conventional seals at distinctly lower costs.
- Figure 1 is a front and partially sectional view of a tray and of a lid with a tamper-evident seal according to the invention, prior to closure;
- Figure 2 is a front enlarged-scale view of a detail of Figure 1, with the container closed;
- Figure 3 is a sectional view of the detail of Figure 2, taken along the plane III-III;
- Figure 4 is a sectional view of a detail of Figure 3, taken along the plane IV-IV.
- a container for food or other commercial products is generally designated by the reference numeral 1.
- the container includes a lid 2 with a substantially flat central wall 4 and a tray 3 with a side wall 5 and a bottom wall 6.
- Both the lid and the tray can be made of plastic, such as polyethylene, polypropylene, PVC or other equivalent materials, using injection-molding processes or by forming sheets of preheated material.
- the lid 2 has a folded edge 7 with an external peripheral portion 8 which is approximately vertical or, better still, is slightly inclined by approximately 10° to facilitate extraction, and is joined to an internal peripheral portion 9 by an annular region 10 which is approximately flat and horizontal.
- the tray 3 has a folded edge 11 with an outer peripheral portion 12 which is also inclined by approximately 10° and is joined to the side wall 5 by means of an annular region 13 which is approximately flat and slightly inclined with respect to the horizontal.
- edges 7 and 11 are substantially complementarily shaped in order to sealingly couple mainly along their respective internal and external peripheral regions even after the first opening action.
- a respective engagement means is distributed along the outer peripheral portions 8 and 12 of the edges 7 and 11 and is suitable to be elastically and unidirectionally coupled by pressing in order to hermetically close and seal the container.
- protrusions or teeth 14 that extend radially and are inclined outward at approximately 40° with respect to the peripheral portion 12.
- the protrusions can be shaped approximately like a trapezium in which the longer parallel side is joined to the peripheral portion 12, with a maximum height S and a width L.
- the openings 15 are formed by a strip 16 that runs uninterruptedly along the circumference and is joined to the peripheral portion 8 by transverse wings 17.
- the wings 17 have an approximately pyramid-like shape which tapers upward and have upper and lower connecting regions 18 and 19.
- the resisting cross-section of the connecting regions 18 is relatively smaller than that of the regions 19.
- the minimum width W of the openings 15 between the bases of the wings 17 is greater than the width L of the protrusions 14.
- the packager After filling the tray, the packager moves the lid closer and compresses it toward the tray so as to align the protrusions 14 with the openings 15, causing the engagement of the protrusions in the openings.
- the lid cannot lift due to the negative-allowance fit of the upper edge 16' of the strip 16 against the base of the teeth 14.
- a tab 20 for grip on the part of a user is joined to the strip 16.
- the strip has, at one of the corners of the tab 20, a wedge-shaped notch or prefracture 21 that forms a stress raiser of the strip.
- a consumer can see that the container is sealed by the presence of the strip 16.
- the consumer wishes to open the container, he/she can grip the tab 20 and pull it outward and upward, breaking the strip at the notch 21.
- the consumer separates the strip from the outer peripheral portion 8 at the connecting regions 8 that have the smallest resisting cross-section. In this manner the lid is released and can be lifted.
- tightness is in any case ensured by the contact of the facing surfaces of the inner and outer peripheral portions of the complementary edges.
- the seal according to the invention achieves the intended aim and all the objects, and in particular it is noted that it can be applied to containers having any shape, even without corners. Furthermore, it can be obtained by means of processes for the forming of thermoplastic sheets or indifferently by injection.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVI930074A IT1270773B (en) | 1993-05-10 | 1993-05-10 | GUARANTEE SEAL FOR PLASTIC CONTAINERS |
ITVI930074 | 1993-05-10 | ||
PCT/EP1994/001420 WO1994026609A1 (en) | 1993-05-10 | 1994-05-04 | Tamper-evident lid for plastic containers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0699161A1 true EP0699161A1 (en) | 1996-03-06 |
EP0699161B1 EP0699161B1 (en) | 1996-12-27 |
Family
ID=11425214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94916193A Expired - Lifetime EP0699161B1 (en) | 1993-05-10 | 1994-05-04 | Tamper-evident lid for plastic containers |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0699161B1 (en) |
AU (1) | AU6795494A (en) |
DE (1) | DE69401275T2 (en) |
DK (1) | DK0699161T3 (en) |
ES (1) | ES2098945T3 (en) |
IT (1) | IT1270773B (en) |
WO (1) | WO1994026609A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2011204806A1 (en) | 2010-07-23 | 2012-02-09 | Christopher Campbell Win | Tamper Evident closure |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3464582A (en) * | 1968-10-09 | 1969-09-02 | Morris Greitzer | Releasable container lid lock |
FR2437987A1 (en) * | 1978-10-06 | 1980-04-30 | Gantzer Jean Louis | Plastics container for food - has snap on lid and is fitted with tear off sealing strip |
EP0052172B1 (en) * | 1980-11-19 | 1984-05-16 | Metallurgie Et Plastic Sa | Closure for plastics container |
NL8301135A (en) * | 1983-03-31 | 1984-10-16 | Unilever Nv | LID FOR A HOLDER. |
EP0142870A2 (en) * | 1983-11-21 | 1985-05-29 | N.V. Thovadec Plastics S.A. | Lid and box associated therewith |
-
1993
- 1993-05-10 IT ITVI930074A patent/IT1270773B/en active IP Right Grant
-
1994
- 1994-05-04 EP EP94916193A patent/EP0699161B1/en not_active Expired - Lifetime
- 1994-05-04 DE DE69401275T patent/DE69401275T2/en not_active Expired - Fee Related
- 1994-05-04 DK DK94916193.9T patent/DK0699161T3/en active
- 1994-05-04 WO PCT/EP1994/001420 patent/WO1994026609A1/en active IP Right Grant
- 1994-05-04 ES ES94916193T patent/ES2098945T3/en not_active Expired - Lifetime
- 1994-05-04 AU AU67954/94A patent/AU6795494A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9426609A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2098945T3 (en) | 1997-05-01 |
DE69401275T2 (en) | 1997-07-17 |
ITVI930074A1 (en) | 1994-11-10 |
AU6795494A (en) | 1994-12-12 |
EP0699161B1 (en) | 1996-12-27 |
WO1994026609A1 (en) | 1994-11-24 |
ITVI930074A0 (en) | 1993-05-10 |
IT1270773B (en) | 1997-05-07 |
DE69401275D1 (en) | 1997-02-06 |
DK0699161T3 (en) | 1997-06-23 |
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