GB2073159A - Closures for Containers - Google Patents
Closures for Containers Download PDFInfo
- Publication number
- GB2073159A GB2073159A GB8108658A GB8108658A GB2073159A GB 2073159 A GB2073159 A GB 2073159A GB 8108658 A GB8108658 A GB 8108658A GB 8108658 A GB8108658 A GB 8108658A GB 2073159 A GB2073159 A GB 2073159A
- Authority
- GB
- United Kingdom
- Prior art keywords
- skirt
- thread
- closure
- neck
- inner 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.)
- 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
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
- B65D41/348—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt the tamper element being rolled or pressed to conform to the shape of the container, e.g. metallic closures
-
- 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
- B65D49/00—Arrangements or devices for preventing refilling of containers
- B65D49/02—One-way valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
A container having an externally screw-threaded neck and an insert 33 disposed in the neck with a top annular flange 34 thereof resting on the top of the neck has a two-part closure fitted to it. The inner member 10 has an annular top 11 which engages over the flange 34 of the insert and has a skirt 12 which is rolled into conformity with the screw- thread on the neck and which has its lower end portion 12a deformed into engagement with a downwardly- facing shoulder 32 on the nack of the container. The outer member 18 has a top 19 with a sealing gasket 26 on its underside and a depending skirt 20 with an annular lower end portion which is connected to the main portion of the skirt by a plurality of frangible bridge portions. The outer member fits over the inner member and has its skirt rolled into conformity with the screw-thread on the inner member, and has its lower end portion deformed so as, through the lower end portion of the inner member, to lie against the shoulder 32. <IMAGE>
Description
SPECIFICATION
Improvements Relating to Closures for
Containers
This invention relates to closures for containers and is more particularly concerned with the provision of a closure, of the type known as a pilfer-proof roll-on closure, for a bottle or other container which has a pouring fitment, for example a non-refillable pouring fitment, disposed in the mouth of the container.
According to this invention in one aspect there is provided a closure for a container having a neck which is externally screw-threaded and a circumferential shoulder which faces the bottom of the container and which is spaced below the screw thread, and an insert which is disposed in the neck of the container and which has an annular flange resting on the top of the neck, said closure comprising an annular inner member made from ductile metal and having an annular top which engages said flange of the insert and a peripheral skirt which has been rolled into conformity with the screw-thread on the neck of the bottle and has the marginal portion adjoining its free edge engaged against said shoulder, and an outer member made from ductile metal and comprising a top, against the underside of which is disposed a gasket forming a seal with the annular top of the inner member and/or the flange of the insert, and a skirt which has been rolled into conformity with the thread on the inner member and which has a marginal edge portion connected to the main part of the skirt by frangible bridge parts and rolled into conformity with the said marginal portion of the inner member so as, through said marginal portion of the inner member, to lie against said shoulder.
The invention also provides a method of
applying a closure to a container having an
externally screw-threaded neck and a
circumferential shoulder spaced below the screwthread which shoulder faces towards the bottom
of the container and having disposed in the neck
an insert which has an annular flange resting on top of the neck, which method comprises placing over the mouth of the bottle an inner closure
member made from a ductile metal and having an annular top engaging over said flange and an unthreaded skirt which extends below said shoulder, and exerting downward pressure on said annular top whilt rolling said skirt into conformity with the screw-thread on the neck by means of thread rollers and rolling the marginal portion of the skirt adjoining the free edge thereof into engagement with said shoulder, placing over the inner member an outer closure member made from a ductile metal and having a top with a sealing gasket disposed against its underside and an unthreaded skirt which extends below said shoulder and which has an annular bottom edge portion connected to the main portion of the skirt by a plurality of frangible bridge portions, and exerting downward pressure on the outer member whilst employing thread rollers to roll the skirt
portion of the outer member into conformity with
the thread rolled on to the inner closure member
and rolling the bottom edge portion of the skirt of
the outer member into engagement with said
shoulder through said marginal portion of the skirt
of the inner member.
Preferably the inner member has the part of its
skirt above the screw-thread inclined inwardly
towards the top of the member and the inclined
portion has an outwardly facing peripheral groove
at a location immediately above the screw-thread.
In one such arrangement, the inclined portion has
an angle of inclination of 1 50 with respect to the
axis of the neck.
In another aspect, the invention provides a
closure arrangement comprising an inner blank
and an outer blank each made from ductile metal,
said inner blank having an annular top wall with a
depending skirt, and said outer blank having a top
wall with a depending substantially cylindrical
skirt and being of a diameter to enable the outer
blank to be placed over the inner blank, the top of
the outer blank having a sealing gasket disposed
against its underside, and the skirt of the outer
blank having an annular free edge portion
connected to the main portion by a plurality of
frangible bridge portions.
The invention will now be described in more
detail with reference by way of example to the
accompanying drawings in which:
Figures 1 and 2 are elevations, half in section,
of blanks of the inner and outer members of a
closure arrangement according to the invention,
and
Figure 3 is a sectional half-elevation of the
applied closure using the blanks shown in Figures
1 and 2.
Referring first to Figure 1, the inner closure
member 10 is made from thin ductile aluminium
or aluminium alloy and comprises an annular top
11 providing a central aperture 1 la, and a skirt
12. The upper portion 13 of the skirt is inclined
inwards towards the axis 14 of the closure at an
angle a equal to 150, and an outwardly-facing
peripheral groove 1 5 is formed in this inclined
surface for a purpose which will be described
more fully below.
Referring now to Figure 2 the outer closure
member 18 is made from the same material as -the inner member and comprises a top 19 and
skirt 20. The skirt is provided in the known
manner with a series of circumferentially
extending slits 21 a short distance above its free
edge 22 so as to leave a plurality of evenly
spaced frangible bridges 23. A groove 25 is
formed near the upper end of the skirt and serves
to retain a sealing gasket 26 (see Figure 3)
against the underside of the top 19.
Referring now to Figure 3 of the drawings, the
bottle 30 shown has its neck formed with an
external screw thread 31 and an external shoulder
32 which faces generally downward. Afitment 33
is disposed in the mouth of the bottle and is of the
kind incorporating a non-return valve which
permits the contents of the bottle to be poured out but prevents refilling of the bottle. Fitment 33 has at its upper end a lateral flange 34 which rests against the top of the bottle, and the inner member 10 engages over the flange and fixes the fitment in position. The skirts of both the inner and outer members are sufficiently long to extend below the shoulder 32.The inner member is applied first by exerting downward pressure against the annular top 11 of the member whilst using thread rollers and forming rollers rotating about the axis of the neck in the known manner respectively to deform the skirt 12 of the member into engagement with the thread on the bottle and to tuck the bottom marginal edge portion 1 2a of the skirt into engagement with the shoulder 32.
The extent of the upper portion 13 of the skirt is such that it extends down to the top turn of the screw thread 31 and the groove 15 is disposed directly above the top turn of the thread.
The outer member 18 is now applied to the bottle in the same manner, downward pressure being exerted on the top 19 of the member to seal the gasket 26 against the top 11 of the inner member and the top 33a of the fitment whilst thread rollers and forming rollers are rotated about the neck and member and operate respectively to deform the skirt 20 of the outer member into the external thread groove now present on the inner member and into engagement with the part 1 2a of the inner member which overlies the shoulder 32.
The bottle is thus provided with a pilfer-proof closure. Unscrewing of the outer member 18 causes the bridges 23 to fracture leaving the lower part of the skirt as a band on the neck and in order to prevent the band from dropping lower on the neck and possibly appearing unsightly the shoulder 32 may be constituted by the upper side wall of a narrow peripheral groove 35 on the bottle neck. Alternatively any of the known arrangements of axial slits and bridges may be employed which permit the said band to be removed. When the outer member is removed the inner member is held in place on the bottle by the engagement of its skirt against the shoulder 26 and serves to retain the fitment 33 securely in place.
The groove 15 and inclined surface 13 of the skirt of the inner member assist greatly in providing good contact between the member and the first turn of the thread on the bottle sn that the risk of interference between the outer and inner members leading to difficulty in removing the outer member is greatly reduced, and the risk is further reduced by causing the thread rollers which operate on the outer member to come into engagement with the skirt of the member at a level a little below the top of the first turn of the thread on the inner member.
Claims (13)
1. A closure for a container having a neck which is externally screw-threaded and a circumferential shoulder which faces the bottom of the container and which is spaced below the screw thread, and an insert which is disposed in the neck of the container and which has an annular flange resting on the top of the neck, said closure comprising an annular inner member made from ductile metal and having an annular top which engages over said flange of the insert and a peripheral skirt which has been rolled into conformity with the screw-thread on the neck of the bottle and has the marginal portion adjoining its free edge engaged against said shoulder, and an outer member made from ductile metal and comprising a top, against the underside of which is disposed a gasket forming a seal with the annular top of the inner member and/or the flange of the insert, and a skirt which has been rolled into conformity with the thread on the inner member and which has a marginal edge portion connected to the main part of the skirt by frangible bridge parts and rolled into conformity with the said marginal portion of the inner member so as, through said marginal portion of the inner member, to lie against said shoulder.
2. A closure as claimed in claim 1 , wherein the inner member has the part of its skirt above the screw-thread inclined inwardly towards the top of the member.
3. A closure as claimed in claim 2, wherein the inclined portion has an outwardly-facing peripheral groove at a location immediately above the screw-thread.
4. A closure as claimed in claim 2 or claim 3, wherein the inclined portion has an angle of inclination of 150 with respect to the axis of the neck.
5. A method of applying a closure to a container having an externally screw-tnreaded neck and a circumferential shoulder spaced below the screw-thread which shoulder faces towards the bottom of the container and having disposed in the neck an insert which has an annular flange resting on top of the neck, which method comprises placing over the mouth of the bottle an inner closure member made from a ductile metal and having an annular top engaging over said flange and an unthreaded skirt which extends below said shoulder, and exerting downward pressure on said annular top whilst rolling said skirt into conformity with the screw-thread on the neck by means of thread rollers and rolling the marginal portion of the skirt adjoining the free edge thereof into engagement with said shoulder, placing over the inner member an outer closure member made from a ductile metal and having a top with a sealing gasket disposed against its underside and an unthreaded skirt which extends below said shoulder and which has an annular bottom edge portion connected to the main portion of the skirt by a plurality of frangible bridge portions, and exerting downward pressure on the outer member whilst employing thread rollers to roll the skirt portion of the outer member into conformity with the thread rolled on to the inner closure member and rolling the bottom edge portion of the skirt of the outer member into engagement with said shoulder through saia
marginal portion of the skirt of the inner member.
6. A method as claimed in claim 5, wherein the
inner member has the part of its skirt above the
screw-thread inclined inwardly towards the top
member and the inclined portion has an
outwardly facing peripheral groove at a location
immediately above the screw-thread and where
the thread rollers engaging the skirt of the outer
member do so at a location just below the top of
the first turn of the thread on the inner member.
7. A closure arrangement comprising an inner
blank and an outer blank each made from ductile
metal, said inner blank having an annular top wall
with a depending skirt, and said outer blank
having a top wall with a depending substantially -cylindrical skirt and being of a diameter to enable
the outer blank to be placed over the inner blank,
the top of the outer blank having a sealing gasket
disposed against its underside, and the skirt of the
outer blank having an annular free edge portion
connected to the main portion by a plurality of
frangible bridge portions.
8. A closure arrangement as claimed in claim 7 wherein the inner member has the part of its skirt adjoining the top inclined inwardly towards the top of the member.
9. A closure arrangement as claimed in claim 8, wherein the inclined portion has adjacent its lower extremity an outwardly facing peripheral groove.
10. A closure arrangement as claimed in claim 7 or claim 8, wherein the inclined portion has an angle of inclination of 1 5C with respect to the axis of the inner member.
11. A closure arrangement substantially as hereinbefore described with reference to and as illustrated in Figures 1 and 2 of the accompanying drawings.
1 2. A method of applying a closure to a container substantially as hereinbefore described with reference to and as illustrated in Figures 1 to 3 of the accompanying drawings.
13. A closure substantially as hereinbefore described with reference to and as illustrated in
Figure 3 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8108658A GB2073159B (en) | 1980-03-28 | 1981-03-19 | Closures for containers |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8010637 | 1980-03-28 | ||
| GB8108658A GB2073159B (en) | 1980-03-28 | 1981-03-19 | Closures for containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2073159A true GB2073159A (en) | 1981-10-14 |
| GB2073159B GB2073159B (en) | 1984-08-15 |
Family
ID=26275022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8108658A Expired GB2073159B (en) | 1980-03-28 | 1981-03-19 | Closures for containers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2073159B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0475672A1 (en) * | 1990-09-05 | 1992-03-18 | Mcg Closures Limited | Metal threaded closure with tamperband and container |
| EP1604910A1 (en) * | 2003-02-28 | 2005-12-14 | Daiwa Can Company | Metal pilfer-proof cap |
| WO2010020926A1 (en) * | 2008-08-17 | 2010-02-25 | Mcg Industries (Pty) Limited | Closure arrangement |
-
1981
- 1981-03-19 GB GB8108658A patent/GB2073159B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0475672A1 (en) * | 1990-09-05 | 1992-03-18 | Mcg Closures Limited | Metal threaded closure with tamperband and container |
| EP1604910A1 (en) * | 2003-02-28 | 2005-12-14 | Daiwa Can Company | Metal pilfer-proof cap |
| EP1604910A4 (en) * | 2003-02-28 | 2009-09-02 | Daiwa Can Co Ltd | Metal pilfer-proof cap |
| WO2010020926A1 (en) * | 2008-08-17 | 2010-02-25 | Mcg Industries (Pty) Limited | Closure arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2073159B (en) | 1984-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950319 |