GB2094274A - Tamper-indicating inner closure cap and method for its production - Google Patents
Tamper-indicating inner closure cap and method for its production Download PDFInfo
- Publication number
- GB2094274A GB2094274A GB8107085A GB8107085A GB2094274A GB 2094274 A GB2094274 A GB 2094274A GB 8107085 A GB8107085 A GB 8107085A GB 8107085 A GB8107085 A GB 8107085A GB 2094274 A GB2094274 A GB 2094274A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug member
- pour
- cap
- base cap
- out hole
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 22
- -1 polyethylene Polymers 0.000 claims abstract description 10
- 239000004743 Polypropylene Substances 0.000 claims abstract description 8
- 229920001155 polypropylene Polymers 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920013716 polyethylene resin Polymers 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 6
- 229920005990 polystyrene resin Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 239000004793 Polystyrene Substances 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- 239000002537 cosmetic Substances 0.000 description 12
- 239000011344 liquid material Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B65D51/00—Closures not otherwise provided for
- B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
- B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
-
- 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
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0006—Upper closure
- B65D2251/0015—Upper closure of the 41-type
-
- 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
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0068—Lower closure
- B65D2251/0087—Lower closure of the 47-type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
An inner closure cap (4) for a container comprises a base cap member (9) made of one thermoplastic resin and a plug member (10), removably fitted to said pour- out hole and having a holding tongue (12) thereon, made of another thermoplastic resin which has no chemical affinity with that of the base cap member (9). Plug member (10) is lightly attached to the base cap member by using pressure to force it against the base cap member whilst at least a portion of the plug member is molten. Member (9) may be of polyethylene and plug member (10) of polypropylene or polystyrene. In another embodiment, Fig. 5 (not shown), plug member (10) is replaced by a sheet member (10b) attached to annulus (11b). <IMAGE>
Description
SPECIFICATION
Virgin sealed inner closure cap and method for its production
The present invention relates to a virgin sealed inner closure cap for a small container such as, for example, a cosmetic tube or bottle.
Some small bottles and especially those for containing cosmetic liquid material, are provided with an inner closure cap having a small hole therethrough which fits tightly to an open mouth in the neck of the bottle so as to limit the amount of the cosmetic liquid material discharged to a small one. Such an inner closure cap is fitted after the bottle is filled with the liquid material through the open mouth. The inner closure cap is then covered by an outer closure cap which is fitted to or engages an external thread at the neck of the bottle.
Recently, in order to give visual proof that none of the cosmetic liquid material in the bottle has been used after filling prior to delivery to a user, it has been proposed to provide a virgin seal structure in the inner closure cap of the bottle. One of the proposed virgin seal structures is to form a tear-off cover portion which is integrally molded with the inner closure cap. The tear-off cover portion is normally defined from the remainder of the inner closure cap by a circular thin wall portion or by a circular perforation line which is designed to be torn-off along the thin wall portion or the perforation line by pulling a projecting tongue integrally formed on the tear-off cover portion. However, it has been very difficult to form the circular thin wall portion or the circular perforation line in such a manner that the tear-off cover portion can be removed very easily.This is particularly the case when the inner closure cap is a small one as is required for, for example, a cosmetic bottle or tube.
Another proposal for a virgin seal structure is to form a hollow closure protrusion integral with the inner closure cap, which is adapted to be cut out by a knife or scissors. However, such a structure is not desirable because the protrusion cannot be cut out easily without the use of a knife or scissors. Also, the shape of the inner closure cap is somewhat limited due to the pressure of the hollow closed protrusion thereon.
Accordingly, an object of the present invention is to provide a virgin sealed inner closure cap for a small container in which a pour-out hole can be formed very easily without the use of a special tool.
An object of an embodiment of the present invention is to provide a virgin sealed inner closure cap especially suited for fitting to a small open mouth in the neck of a bottle such as a cosmetic bottle.
According to the present invention there is
provided a virgin sealed inner closure cap for
a container adapted to be tightly fitted to an
open mouth in the neck of the container and
to be covered by an outer closure cap engaga
ble with the outer periphery of said neck, said
inner closure cap comprising a base cap mem
ber of a thermoplastic resin for fitting to said
open mouth and having a pour-out hole
through a top end wall thereof, and a plug
member removably fitted to said pour-out hole
and having a tongue thereon, wherein said
plug member is made of another thermoplas
tic resin, which has no chemical affinity for that of said base cap member, and is lightly
attached to said base cap member to cover
said pour-out hole by using pressure to force
said plug member against said base cap mem
ber while at least a portion of said plug
member is molten.
According to a further aspect of the present
invention there is also provided a method of
manufacturing a virgin sealed inner closure
cap for a container adapted to be tightly fitted to an open mouth in the neck of the container
and to be covered by an outer closure cap
engagable with the outer periphery of said
neck, said inner closure cap comprising a
base cap member of a thermoplastic resin for
fitting to said open mouth in the neck of said
container and having a pour-out hole through
a top end wall thereof, the method comprising
attaching a removable plug member having a
holding tongue thereon, to said base cap
member to cover said pour-out hole by using
pressure to force said plug member against
said base cap member while at least a portion
of said plug member is molten said plug
member of another thermoplastic resin, which
has no chemical affinity for that of said base
cap member.
Embodiments of the present invention will
now be described by way of example with
reference to the accompanying drawings, in
which:
Figure 1 is a vertical sectional view showing
a cosmetic bottle covered with virgin sealed
inner closure cap according to an embodiment
of the present invention,
Figure 2 is a partially sectioned perspective
view showing the inner closure cap of Fig. 1,
Figure 3 is a perspective view showing the
inner closure cap of Figs. 1 and 2, in which a
plug member is shown removed from a base cap rnember, Figure 4 is a partially sectioned perspective
view showing a virgin sealed inner closure cap
according to another embodiment of the pre
sent invention, and
Figure 5 is a partially sectioned perspective
view showing a virgin sealed inner closure cap
according to a further embodiment of the
present invention.
The embodiment of the present invention
shown in Figs. 1 to 3 will now be described.
A cosmetic bottle 1 for containing a cosmetic liquid material has an externally threaded neck portion 2, the top end of which provides an open mouth 3 for the bottle. After filling the bottle 1 with the cosmetic liquid material, the open mouth 3 is covered with an inner closure cap 4 of the present invention. The inner closure cap 4 is covered with and enclosed by an outer closure cap 5 which has an internally threaded skirt portion 6 engagable with the externally threaded neck portion 2 of the bottle 1. The inner closure cap 4 is provided to limit the amount of the cosmetic liquid material discharged to small one when it is desired to pour out the liquid material. The inner closure cap 4 tightly engages the open mouth portion of the bottle 1 so as not to allow easy removal therefrom.For example, the inner closure cap 4 made of resilient plastics material has a radially inwardly projecting annular flange 7 at the lower open end thereof which engages by press-fit a radially outwardly projecting annular flange 8 at the top end of the bottle 1.
The inner closure cap 4 of this embodiment of the present invention comprises a base cap member 9 and a removable plug member 10.
The base cap member 9 has the annular flange 7 engagable with the upper end of the bottle 1 and also has a pour-out hole 11 at the central portion thereof. The pour-out hole 11 generally has an inverted frusto-conical shape and is closed by the plug member 10 which has a tongue 1 2 attached thereto. The base cap member 10 is formed from thermoplastic resin by injection molding. The plug member 10 is also formed from another type of thermoplastic resin by injection molding.
The thermoplastic resin of the base cap member 9 is selected to be of a material which does not have a chemical affinity for the other thermoplastic resin of the plug member 10.
This means that when one molten thermoplastic resin is brought into contact with the other molten thermoplastic resin, the two resins cannot become combined integrally with each other but can be separated from each other after solidification without requiring a substantial force to be applied. Preferably, polyethylene resin is used as the resin for forming the base cap member 9 or the plug member 10, and polypropylene resin or polystyrene resin is used for forming the other member. In a practical embodiment, the base cap member 9 is initially formed from polyethylene resin and then polypropylene resin is injected into the pour-out hole 11 of the base cap member 9 by injection molding.Although as stated above, the polyethylene and polypropylene resins have no chemical affinity for each other, as a result of the polypropylene resin being injected under substantial pressure, the plug member 10 formed adhers lightly to the base cap member 9 to completely close and seal the pour-out hole 11. The adhesion of the plug member 10 is firm enough to prevent any leakage of the liquid material in the bottle even when the bottle is shaken while being held upside down.When it is desired to use the cosmetic liquid in the bottle for the first time, the user can remove the plug member 10 quite easily by holding and pulling up the tongue 1 2 on the plug member 1 0. Since the plug member 10 is not welded to be integral with the base cap member 9, the inverted frusto-conical wall of the base cap member 9 defining the pour-out hole 11 is very clean and substantially no trace of welding remains on this wall.
Once the plug member 10 is removed from the base cap member, the pour-out hole 11 of the base cap member cannot be sealed again by the plug member 1 0. Accordingly, it can be ascertained visually whether or not the contents of the bottle are virgin by the presence or absence of the plug member 10 in the inner closure cap 4 and hence provides visual proof of any unauthorized opening of the bottle.
In the embodiment of the present invention shown in Fig. 4, another type of virgin sealed inner closure cap 4a is provided which comprises a plug member 1 0a which is different from that of the first embodiment. In this case, a tongue 1 2a is provided which projects upwardly from the centre of the plug member 1 Oa. It is very easy to mold such a plug member 1 0a by injection molding on to a pour-out hole 11 a in a base cap member 9a.
Other structures and features of the inner closure cap 4a of this embodiment are substantially the same as those described in connection with that embodiment shown in Figs.
1 to 3.
Fig. 5 shows a further embodiment of the present invention having yet another type of virgin sealed inner closure cap 4b in which a plug member 1 orb is a sheet of thermoplastic resin. The disc-shaped plug member lOb which has a tongue 1 2b thereon is pressed against the periphery of a pour-out hole 11 b in a base cap member 9b under the action of heat until the disc-shaped plug member 10b is partially molten. Under the pressure, the molten part of the disc-shaped plug member lightly adhers to the periphery of the pour-out hole 11 b so as to close this hole. In this embodiment, an annular projection is provided at the centre of the base cap member 9b at the periphery of the pour-out hole 11 b, so that the pressing of the disc-shaped plug member 1 Ob against the periphery of the pour-out hole can be performed very easily.
As in the case of the previous embodiment, the base cap member 9b is made of polyethylene resin and the disc-shaped plug member 1 Ob is made of polypropylene resin or polystyrene resin.
As should be clear from the preceding descriptions of embodiments of the present in vention, the plug member 10 is formed from one thermoplastic resin having no chemical affinity for the thermoplastic resin from which the base cap member 9 is made and is lightly adhered to the base cap member 9 by the application of pressure with the use of heat.
Accordingly, although the sealing of the plug member is sufficient to prevent any leakage of the liquid material in the container, the plug member can be removed quite easily as desired from the base cap member by a very small pulling force. The attaching or adhering of the plug member to the pour-out hole of the base cap member can be carried out very easily when the molten thermoplastic resin of the plug member is injected to the pour-out hole of a base cap member previously formed.
Claims (11)
1. A virgin sealed inner closure cap for a container adapted to be tightly fitted to an open mouth in the neck of the container and to be covered by an outer closure cap engagable with the outer periphery of said neck, said inner closure cap comprising a base cap member of a thermoplastic resin for fitting to said open mouth and having a pour-out hole through a top end wall thereof, and a plug member removably fitted to said pour-out hole and having a tongue thereon, wherein said plug member is made of another thermoplastic resin, which has no chemical, affinity for that of said base cap member, and is lightly attached to said base cap member to cover said pour-out hole by using pressure to force said plug member against said base cap member while at least a portion of said plug member is molten.
2. A cap as claimed in claim 1, wherein said base cap member is made of polyethylene resin and said plug member is made of polypropylene resin.
3. A cap as claimed in claim 1, wherein said base cap member is made of polyethylene resin and said plug member is made of polystyrene resin.
4. A cap as claimed in any one of claims 1 to 3, wherein said plug member is formed on said pour-out hole of the performed base cap member by injection molding.
5. A cap as claimed in any one of claims 1 to 3, wherein said plug member is a sheet of said thermoplastic resin which is pressed against the periphery of said pour-out hole under the action of heat so as to partially melt said sheet.
6. A virgin sealed inner closure cap for a container substantially as herein described with reference to and as illustrated in any of
Figs. 1 to 3 or 4 or 5 of the accompanying drawings.
7. A method of manufacturing a virgin sealed inner closure cap for a container adapted to be tightly fitted to an open mouth in the neck of the container and to be covered by an outer closure cap engagable with the outer periphery of said neck, said inner closure cap comprising a base cap member of a thermoplastic resin for fitting to said open mouth in the neck of said container and having a pour-out hole through a top end wall thereof, the method comprising attaching a removable plug member having a holding tongue thereon, to said base cap member to cover said pour-out hole by using pressure to force said plug member against said base cap member while at least a portion of said plug member is molten said plug member of another thermoplastic resin, which has no chemical affinity for that of said base cap member.
8. A method as claimed in claim 7, wherein said base cap member is of polyethylene resin and said plug member is of polypropylene resin.
9. A method as claimed in claim 7, wherein said base cap member is made of polyethylene resin and said plug member is made of polystyrene resin.
1 0. A method as claimed in any one of claims 7 to 9, wherein said plug member is formed on said pour-out hole of the preformed base member by injection molding.
11. A method as claimed in any one of claims 7 to 9, wherein said plug member is a sheet of said thermoplastic resin which is pressed against the periphery of said pour-out hole under the action of heat so as to partially melt said sheet.
1 2. A method of manufacturing a virgin sealed inner closure cap for a container substantially as herein described with reference to any of Figs. 1 and 3 or 4 or 5 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8107085A GB2094274B (en) | 1981-03-06 | 1981-03-06 | Tamper-indicating inner closure cap and method for its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8107085A GB2094274B (en) | 1981-03-06 | 1981-03-06 | Tamper-indicating inner closure cap and method for its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2094274A true GB2094274A (en) | 1982-09-15 |
| GB2094274B GB2094274B (en) | 1985-06-05 |
Family
ID=10520194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8107085A Expired GB2094274B (en) | 1981-03-06 | 1981-03-06 | Tamper-indicating inner closure cap and method for its production |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2094274B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570055A1 (en) * | 1984-09-10 | 1986-03-14 | Cebal | Assembly of a tube, a screw cap and an intermediate sealing cover |
| GB2257693A (en) * | 1991-07-10 | 1993-01-20 | Beeson & Sons Ltd | Container closure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5411157A (en) | 1990-05-30 | 1995-05-02 | Beeson And Sons Limited | Container and the manufacture thereof |
-
1981
- 1981-03-06 GB GB8107085A patent/GB2094274B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570055A1 (en) * | 1984-09-10 | 1986-03-14 | Cebal | Assembly of a tube, a screw cap and an intermediate sealing cover |
| GB2257693A (en) * | 1991-07-10 | 1993-01-20 | Beeson & Sons Ltd | Container closure |
| GB2257693B (en) * | 1991-07-10 | 1995-08-02 | Beeson & Sons Ltd | A container and closure |
| US5788101A (en) * | 1991-07-10 | 1998-08-04 | Beeson And Sons, Limited | Container and closure |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2094274B (en) | 1985-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2095943C (en) | Closure unit for containers of flowable goods | |
| JP3701026B2 (en) | Threaded lid with controlled orifice liner for piercing sealed containers | |
| US5755360A (en) | Multi-material, multi-shot, injection molded dispensing closure having a removable seal | |
| KR100445578B1 (en) | A hinged cap separable from bottle at the time of disposal | |
| US6050435A (en) | Closure with integral self-sealing silicone valve and method for making same | |
| JPS63232156A (en) | Safety packaging vessel consisting of sealing body and vessel | |
| US20080111276A1 (en) | Grip cap | |
| US20100140268A1 (en) | Dispensing closure with removable membrane | |
| US4796769A (en) | Tamper-proof pourer and stopper cap assembly | |
| EP0086221A1 (en) | Tamper indicating closure cap | |
| US4196819A (en) | Reducer-carrying cap | |
| US4569456A (en) | Sealed container with replaceable plug insert | |
| EP1713697B1 (en) | Composite lined closure | |
| EP0076418A2 (en) | Method for manufacturing sealed plastics containers, in particular flacons, vials, and/or the like, and containers obtained thereby | |
| US4341319A (en) | Virgin sealed inner closure cap | |
| US4569457A (en) | Bottle closure | |
| GB2094274A (en) | Tamper-indicating inner closure cap and method for its production | |
| US11377271B2 (en) | Plastic closure part with severable membrane | |
| EP1999027A2 (en) | A container and method of manufacturing such | |
| JPH08183555A (en) | Structure for opening | |
| JP4061340B2 (en) | Hollow container with spout and its molding method | |
| AU645214B2 (en) | Closure | |
| US5992710A (en) | Lid with integrally molded pouring spout | |
| US4687111A (en) | Tamper evident container | |
| AU725401B2 (en) | Hermetically sealed container with closure insert |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |