EP0631942A1 - Capuchon en matière plastique à charnière avec effet de ressort - Google Patents
Capuchon en matière plastique à charnière avec effet de ressort Download PDFInfo
- Publication number
- EP0631942A1 EP0631942A1 EP94610037A EP94610037A EP0631942A1 EP 0631942 A1 EP0631942 A1 EP 0631942A1 EP 94610037 A EP94610037 A EP 94610037A EP 94610037 A EP94610037 A EP 94610037A EP 0631942 A1 EP0631942 A1 EP 0631942A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting band
- thickness
- weakenings
- plastics cap
- lid member
- 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- Withdrawn
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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
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
- B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
- B65D47/0809—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions
Definitions
- the present invention concerns a plastics cap comprising a mounting member and a lid member which are interconnected via a snap hinge which extends past their common closing plane and comprises a single connecting band connected at its opposite ends with curved areas on the sides of the mounting member and the lid member, respectively, via film hinges, said opposed film hinges, on their extent from the center of the connecting band out toward its longitudinal side edges, receding from each other with curvatures which substantially correspond to the curvatures of said areas on the sides of the mounting member and the lid member, respectively, seen in cross-section, said lid member passing two bistable positions during an opening or closing movement of the cap.
- US patent specification 3 135 456 discloses a cap of the type mentioned above, wherein the mounting member and the lid member may be made of many different types of materials, such as composition paper, plastics, wood, metal, which are joined e.g. by glueing with a resilient connecting band preferably made of a plastics material, such as polyethylene or polypropylene. It is also mentioned in said specification that it is contemplated to make the cap of plastics in one piece with the snap hinge by injection moulding.
- plastics caps with snap hinges of the above-mentioned type have not yet been mass-produced by the ever increasing package industry in spite of the fact that within the last 10-20 years the package market has taken an ever increasing amount of plastics caps with snap hinges.
- plastics caps with snap hinges constructed in such a manner that the lid member passes just one bistable position during an opening or closing movement of the cap.
- the mounting member and the lid member are connected directly via a main hinge as well as two connecting bands or elements of quite negligible extensibility arranged on their respective sides of the main hinge.
- the snap effect is due to the fact that other parts than the connecting bands are flexible and capable of yielding; in practice the main hinge and/or the sides of the mounting member and the lid member with which the connecting bands are connected, yield to provide the desired snap effect.
- plastics caps with snap hinges of this last-mentioned type by injection moulding involves high tool costs owing to the complicated structure with both main hinge and connecting bands, and the tools are moreover particularly subject to damage and breakdown.
- the reason is that the plastics caps are always moulded in an open position, which therefore leaves a wall in the tool of small thickness and consequently low strength between the sides of the mounting member and the lid member in the open position of these.
- the plastics caps with snap hinges of this type frequently malfunction because the snap effect not infrequently diminishes considerably or perhaps disappears completely because of plastic deformation of parts of the cap in use. This may e.g. be due to excessive stretching of the connecting bands.
- a plastics cap with a snap hinge of this type is known e.g. from EP 0 056 469.
- the plastics cap with a snap hinge according to the present invention is characterized in that the connecting band is provided with weakenings in areas spaced within its longitudinal side edges.
- the invention thus provides a plastics cap with a snap hinge which both has a simple structure and is always reliable in use with a dependable snap effect of the connecting band only, and which can moreover be mass-produced in simple and reliable injection moulds.
- the said areas having weakenings may at least extend near the end of the connecting band which is connected with the lid member, so that the film hinge of the lid member will be activated first, thereby causing the lid member to assume the correct position when the lid member is moved down into engagement with the mounting member during closing.
- the weakenings may be provided as film hinge like reductions in thickness which extend between adjoining parts of the connecting band of substantially uniform thickness, thereby providing a particularly good and reliable flexing action of the connecting band during opening and closing of the cap.
- the weakenings may comprise film hinge like reductions in thickness which extend longitudinally of the connecting band, resulting in a particularly simple connecting band.
- the weakenings may comprise film hinge like reductions in thickness which extend transversely to the connecting band.
- the longitudinal and/or transverse film hinge like reductions in thickness of the weakenings may be mutually parallel in a particularly expedient manner according to the invention.
- the transverse film hinge like reductions in thickness of the weakenings may extend across the longitudinal center of the band and between a pair of longitudinal film hinge like reductions in thickness, spaced within their respective adjoining side edges on the connecting band.
- the weakenings may also be provided as areas of a lower thickness than areas located in adjoining longitudinal relationship with the side edges of the connecting band, so that the connecting band will be stretched in a particularly expedient manner and therefore does not protrude beyond the sides of the lid member and the mounting member when the cap is closed.
- the weakenings of the lowest thickness may be located at the longitudinal center of the band in a particularly expedient manner.
- the connecting band seen in cross-section transversely to its longitudinal extent, may have an evenly decreasing thickness in a direction from the side edges inwardly toward the longitudinal center of the band.
- the plastics cap 1 shown in fig. 1 comprises a mounting member 3 and a lid member 4 which are interconnected via a snap hinge 2 extending past the common closing plane L of the parts 3, 4 in the closed state of the plastics cap, see fig. 2.
- the plastics cap 1 is manufactured by injection moulding in closed moulds and in the open position of the cap shown in fig. 1.
- the snap hinge 2 comprises a single connecting band 1 which is connected at its opposite ends 6, 7 with curved areas on the sides 8, 9 of the mounting member and the lid member 3, 4, respectively, via film hinges 10, 11.
- the opposite film hinges 10, 11 extend away from each other with curvatures which substantially correspond to the curvatures of the said areas 8, 9 on the sides 8, 9 of the mounting member and the lid member, respectively.
- the shown embodiment of the plastics cap involves a plastics cap of circular cross-section, and the film hinges of the connecting band 5 extend with the same radius of curvature as the radius of curvature of the circular cross-section of the cap 1.
- the lid member 4 passes two bistable positions corresponding to first activating one film hinge 10 and then the other film hinge 11, or vice versa.
- the length 1 of the connecting band 5 need not correspond to the full heigth of the cap 1, but should be sufficient to provide a sufficient length of flexible plastics material in the connecting band between the film hinges 10, 11, so that the band 5 has no difficulty in curving in and out during opening and closing of the cap 1.
- the width b of the connecting band 5 depends on the angular boundary ⁇ , which should preferably be between 30 and 60°, but not above 90°. In the shown embodiments the angle ⁇ is 42°.
- the length/width ratio 1/b of the connecting band 5 should be between 1/5 and 1/2 and preferably about 1/3 like in the shown embodiment.
- the lid member 4 may internally be provided with a central ring 14 having an annular internal groove 15, which engages with an external annular bead 16 on the dispensing spout 17 of the mounting member 3 in the closed state of the lid member 4. This ensures in an expedient manner that the lid member 4 is always intimately engaged with the mounting member 3 in the closed state.
- the connecting band 5 comprises weakenings in areas extending within the longitudinal side edges 12, 13 of the connecting band 5.
- the weakenings may expediently be provided as parallel, longitudinal film hinge like reductions in thickness 20 extending between the film hinges 10, 11 at the ends of the connecting band 5. This ensures that it is particularly easy for the connecting band 5 to curve in or out during opening or closing of the cap 1, so that the film hinges 10, 11 will just be loaded to a very small degree.
- This embodiment has been found to be particularly expedient as regards the mode of operation and service life of the snap hinge when the plastics cap 1 has been cooled to refrigerator temperature and is to be opened or closed repeatedly.
- the film hinge like reductions in thickness may extend in many different orientations on the connecting band, provided that a more flexible and resilient state is obtained for the connecting band in relation to a connecting band having a constant thickness throughout.
- the film hinge like reductions in thickness 20' may e.g. extend transversely to the longitudinal direction of the connecting band 5'.
- the transverse film hinge like reductions in thickness 20' might also be restricted in their extent by longitudinal film hinge like reductions in thickness 20 which extend in internal spaced relationship with the side edges of the connecting band 5''.
- Fig. 5 shows a further expedient embodiment in which the connecting band 5''', seen in cross-section transversely to its longitudinal extent, has an evenly decreasing thickness in a direction from the side edges 12', 13' inwardly toward the longitudinal center of the band 5'''.
- the greater thickness of the side edges 12', 13' of the connecting band 5''' hereby ensures that the connecting band 5''' is nicely stretched and does not protrude much beyond the sides of the lid member and the mounting member 4, 3, respectively, in the closed state of the cap 1.
- areas of weakenings should at least extend near the end 7 of the connecting band 5 which is connected with the lid member 4. This ensures that the film hinge 11 of the lid member 4 will be activated before the film hinge 10 of the mounting member 3 during closing of the cap 1, so that the lid member 4 will always be engaged correctly over the mounting member 3.
- the number of film hinge like reductions in thickness might simply just be increased near the end 7 of the connecting band 5 which is connected with the lid member 4.
- the curvature of the film hinge 10 on the mounting member 3 might be amended somewhat from the curvature of the area on the mounting member across which the film hinge 10 extends, i.e. the curvature of the circular cross-section of the mounting member, so that during opening and closing of the cap 1 the film hinge 10 will operate somewhat more "tightly" than the film hinge 11 for correct engagement of the closure member 4 with the mounting member 3 during closing.
- the weakenings might be provided in many different ways, e.g. as larger areas of low thickness seen in relation to the rest of the connecting band; the essential feature is that the connecting band is provided with weakenings seen in relation to a connecting band of uniform even thickness.
- the connecting band might also be provided with up to several perforations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK780/93 | 1993-07-01 | ||
DK78093A DK78093D0 (da) | 1993-07-01 | 1993-07-01 | Plastkapsel med snaphaengsel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0631942A1 true EP0631942A1 (fr) | 1995-01-04 |
Family
ID=8097476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94610037A Withdrawn EP0631942A1 (fr) | 1993-07-01 | 1994-06-30 | Capuchon en matière plastique à charnière avec effet de ressort |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0631942A1 (fr) |
DK (1) | DK78093D0 (fr) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1000868C2 (nl) * | 1995-07-21 | 1997-01-22 | Packard Instr Bv | Vloeistofhouder uit kunststof voor kleine vloeistofhoeveelheden. |
WO1997002189A1 (fr) * | 1995-07-01 | 1997-01-23 | Creanova Ag | Systeme de charniere a effet ressort, par ex. pour systemes de fermeture en plastique injectes en une seule piece |
US5642824A (en) * | 1995-12-07 | 1997-07-01 | Aptargroup, Inc. | Closure with multiple axis bistable hinge structure |
US6321923B1 (en) | 2000-04-26 | 2001-11-27 | Seaquist Closures Foreign, Inc. | Bistable hinge with reduced stress regions |
GB2401859A (en) * | 2003-04-17 | 2004-11-24 | Portola Packaging Ltd | Closure with integral spaced hinge portions |
DE19832799B4 (de) * | 1998-07-21 | 2006-03-02 | Kunststoffwerk Kutterer Gmbh & Co. Kg | Aufklappbare Verschlußkappe |
USD679181S1 (en) | 2012-03-26 | 2013-04-02 | Gateway Plastics, Inc. | Closure for a container |
US8899437B2 (en) | 2012-01-20 | 2014-12-02 | Gateway Plastics, Inc. | Closure with integrated dosage cup |
US8955705B2 (en) | 2012-03-26 | 2015-02-17 | Gateway Plastics, Inc. | Closure for a container |
US9475623B2 (en) | 2012-03-26 | 2016-10-25 | Gateway Plastics, Inc. | Closure for a container |
WO2017013226A1 (fr) * | 2015-07-22 | 2017-01-26 | Nestec S.A. | Fermeture articulée pour un contenant |
WO2019175740A3 (fr) * | 2018-03-12 | 2019-11-28 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Bouchon de récipient et procédé de production d'un bouchon |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3209963A (en) * | 1963-07-26 | 1965-10-05 | Container Corp | Captive dispensing closure arrangement |
DE2159035A1 (de) * | 1971-11-29 | 1973-06-07 | Metal Box Co Ltd | Ausgussvorrichtung fuer fliessfaehige medien |
GB1360091A (en) * | 1972-07-31 | 1974-07-17 | Metal Box Co Ltd | Closures |
US5007555A (en) * | 1989-12-19 | 1991-04-16 | Creative Packaging Corp. | Biased hinge cap |
-
1993
- 1993-07-01 DK DK78093A patent/DK78093D0/da not_active Application Discontinuation
-
1994
- 1994-06-30 EP EP94610037A patent/EP0631942A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3209963A (en) * | 1963-07-26 | 1965-10-05 | Container Corp | Captive dispensing closure arrangement |
DE2159035A1 (de) * | 1971-11-29 | 1973-06-07 | Metal Box Co Ltd | Ausgussvorrichtung fuer fliessfaehige medien |
GB1360091A (en) * | 1972-07-31 | 1974-07-17 | Metal Box Co Ltd | Closures |
US5007555A (en) * | 1989-12-19 | 1991-04-16 | Creative Packaging Corp. | Biased hinge cap |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997002189A1 (fr) * | 1995-07-01 | 1997-01-23 | Creanova Ag | Systeme de charniere a effet ressort, par ex. pour systemes de fermeture en plastique injectes en une seule piece |
AU702212B2 (en) * | 1995-07-01 | 1999-02-18 | Creanova Ag | Spring-effect hinge arrangement, for example for one-piece injected plastic closures |
CN1071689C (zh) * | 1995-07-01 | 2001-09-26 | 克雷阿诺瓦股份公司 | 弹性的铰链装置 |
EP0754497A1 (fr) * | 1995-07-21 | 1997-01-22 | Packard Instrument B.V. | Récipient de liquide en matière plastique pour des petites quantités de liquides |
NL1000868C2 (nl) * | 1995-07-21 | 1997-01-22 | Packard Instr Bv | Vloeistofhouder uit kunststof voor kleine vloeistofhoeveelheden. |
US5642824A (en) * | 1995-12-07 | 1997-07-01 | Aptargroup, Inc. | Closure with multiple axis bistable hinge structure |
DE19832799B4 (de) * | 1998-07-21 | 2006-03-02 | Kunststoffwerk Kutterer Gmbh & Co. Kg | Aufklappbare Verschlußkappe |
US6321923B1 (en) | 2000-04-26 | 2001-11-27 | Seaquist Closures Foreign, Inc. | Bistable hinge with reduced stress regions |
GB2401859A (en) * | 2003-04-17 | 2004-11-24 | Portola Packaging Ltd | Closure with integral spaced hinge portions |
US8899437B2 (en) | 2012-01-20 | 2014-12-02 | Gateway Plastics, Inc. | Closure with integrated dosage cup |
US8955705B2 (en) | 2012-03-26 | 2015-02-17 | Gateway Plastics, Inc. | Closure for a container |
US9868572B2 (en) | 2012-03-26 | 2018-01-16 | Gateway Plastics, Inc. | Closure for a container |
USD679181S1 (en) | 2012-03-26 | 2013-04-02 | Gateway Plastics, Inc. | Closure for a container |
US9475623B2 (en) | 2012-03-26 | 2016-10-25 | Gateway Plastics, Inc. | Closure for a container |
USD714144S1 (en) | 2012-03-26 | 2014-09-30 | Gateway Plastics, Inc. | Closure for a container |
US10358269B2 (en) | 2015-07-22 | 2019-07-23 | Nestec S.A. | Hinged closure for a container |
CN107848675A (zh) * | 2015-07-22 | 2018-03-27 | 雀巢产品技术援助有限公司 | 用于容器的铰链封闭件 |
WO2017013226A1 (fr) * | 2015-07-22 | 2017-01-26 | Nestec S.A. | Fermeture articulée pour un contenant |
CN107848675B (zh) * | 2015-07-22 | 2020-07-07 | 雀巢产品有限公司 | 用于容器的铰链封闭件 |
WO2019175740A3 (fr) * | 2018-03-12 | 2019-11-28 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Bouchon de récipient et procédé de production d'un bouchon |
CN112020466A (zh) * | 2018-03-12 | 2020-12-01 | 萨克米伊莫拉机械合作社合作公司 | 用于容器的盖及其制造方法 |
CN112020466B (zh) * | 2018-03-12 | 2022-05-24 | 萨克米伊莫拉机械合作社合作公司 | 用于容器的盖及其制造方法 |
CN114655562A (zh) * | 2018-03-12 | 2022-06-24 | 萨克米伊莫拉机械合作社合作公司 | 用于容器的盖及该盖和容器的颈部的组合 |
US11827422B2 (en) | 2018-03-12 | 2023-11-28 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Cap for a container, and method for producing a cap |
Also Published As
Publication number | Publication date |
---|---|
DK78093D0 (da) | 1993-07-01 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE DK ES FR GB LI LU NL SE |
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17P | Request for examination filed |
Effective date: 19950616 |
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GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
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17Q | First examination report despatched |
Effective date: 19961028 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Withdrawal date: 19961212 |