CA2011319C - Packing container for liquid, especially pressurized contents - Google Patents
Packing container for liquid, especially pressurized contentsInfo
- Publication number
- CA2011319C CA2011319C CA002011319A CA2011319A CA2011319C CA 2011319 C CA2011319 C CA 2011319C CA 002011319 A CA002011319 A CA 002011319A CA 2011319 A CA2011319 A CA 2011319A CA 2011319 C CA2011319 C CA 2011319C
- Authority
- CA
- Canada
- Prior art keywords
- end wall
- plastic material
- cover strip
- metal layer
- coating
- 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.)
- Expired - Fee Related
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
- B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
- B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
- B65D17/501—Flexible tape or foil-like material
- B65D17/502—Flexible tape or foil-like material applied to the external part of the container wall only
-
- 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
- B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
- B65D2517/0001—Details
- B65D2517/001—Action for opening container
- B65D2517/0013—Action for opening container pull-out tear panel, e.g. by means of a tear-tab
-
- 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
- B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
- B65D2517/0001—Details
- B65D2517/0058—Other details of container end panel
- B65D2517/008—Materials of container end panel
- B65D2517/0082—Coated or laminated metal
-
- 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
- B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
- B65D2517/0001—Details
- B65D2517/0058—Other details of container end panel
- B65D2517/0089—Unusual details
-
- 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
- B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
- B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
- B65D2517/5002—Details of flexible tape or foil-like material
- B65D2517/5024—Material
- B65D2517/5032—Laminated
-
- 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
- B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
- B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
- B65D2517/5072—Details of hand grip, tear- or lift-tab
- B65D2517/5083—Details of hand grip, tear- or lift-tab with means facilitating initial lifting of tape, e.g. lift or pull-tabs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Packages (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Cartons (AREA)
- Containers Opened By Tearing Frangible Portions (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Coating Apparatus (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
A packing container comprising an end wall (3) and an emptying opening (4) incorporated in the end wall which is covered by means of a cover strip (5) applied detachably to the outside of the end wall. The cover strip (5) as well as the end wall (3) consist of a plastic-coated metallic material and are attached to one another along a sealing joint formed by surface fusion around the whole emptying opening .
Description
A PACKING CONTAINER FOR LIQUID, ESPECIALLY PRESSURIZED
CONTENTS
The present invention relates to a packing container of non-returnable character for liquid, especially pressurized, contents, which comprises at least one plane end wall, an emptying opening incorporated in the end wall and an outer cover strip which is applied over the emptying opening to the outside of the end wall.
In packing technology frequently non-returnable packages of a can character are used for the packaging of liquid, especially pressurized, contents such as beer, refreshing beverages and similar carbonated products.
These known can packages generally consist of a cylindrical can body provided with a base, the upper end of the can body being closed with the help of a, substantially, plane end wall which is seamed onto the cylindrical can body.
The cylindrical can body generally consists of plastic or metal, e.g. iron or aluminum, whereas the plane end wall as a rule always consists of sheet aluminum.
To make the package conveniently openable it is provided in most cases with some type of opening arrangement which on the one hand should make the package readily openable and on the other hand should allow a smooth emptying of the contents from the opened package.
A very usual opening arrangement on such known can packages has a weakened or openable part in the plane end wall which by means of a pull-ring fixed to the weakened or openable part is adapted so that it can be completely pulled off to expose an emptying opening through which the contents of the package can be made accessible. One problem, not infrequently encountered in this, intrinsically simple and in most cases well-functioning, opening arrangement is that the openable end wall has to be manufactured from a relatively soft material, preferably aluminum, which is both soft and easy to process, but which from a point of view of manufacture is a very energy-consuming and thus cost-demanding metal. For the sake of making the package more economical, therefore, it is necessary, among other things, to recover and reuse as much as possible of the aluminum content of the package used, which, however, is counteracted or seriously obstructed by the fact that the part of the end wall of the package pulled off on opening of the package, including the pull-ring, in most cases is thrown away and thus is completely lost after a single use. To the economic loss also comes that the wasted portion of the end wall represents a substantial environmental problem, since it can remain lying about in nature for a very long time before it breaks down through corrosion, and constitutes during this time, because of its sharp edges, a hazard to humans and animals.
Another opening arrangement on known can packages of the type which has been described above consists of an emptying opening incorporated in the end wall of the drum which is covered by a cover strip or similar closure device slued detachably onto the outside of the end wall. This known opening arrangement too is relatively simple and easy to manufacture and as a rule functions well, but it has the disadvantage, among other things, especially in the case of can packages for pressurized contents, that it requires environmentally doubtful and expensive glue to provide the joint between cover strip and package end wall with the required tightness and durability.
The abovementioned inconveniences are avoided in accordance with the present invention in that a packing container of the type described in the introduction has been given the characteristic that the cover strip as well as the said end wall are made of a material comprising a layer of metal and at least one outer coating of weldable plastics and that the cover strip is connected to the end wall along a sealing joint around the whole emptying opening which is liquid-tight, but can be broken up, formed by surface fusion of plastic coatings facing one another on the cover strip and the end wall respectively.
In accordance with a particularly preferred embodiment of the invention the sealing joint between the cover strip and the end wall of the package is produced by inductive heating in a manner known in itself of the metal layers incorporated in the cover strip and the end wall respectively, which has been found to bring about that the package can be closed in a rapid and simple manner and that the actual closing process can be easily monitored both with regard to heating period and temperature and that the sealing joint will be tighter and more durable than, for example, in the case of glueing.
Further preferred embodiments and advantages of the invention have been given, moreover, the characteristics specified in the following subsidiary claims.
The invention will now be described in greater detail with special reference to the attached drawing, wherein Figure 1 shows schematically the top part of a packing container provided with an opening arrangement in accordance with the invention, and Figure 2 shows a central section of the container according to Figure 1.
Although the invention can be applied to all packages of a can character, it is assumed in the special embodiment referred to here that the package, which has been given the general reference designation 1, is of the type which is shown in Figure 1 and which consists of an upwards tapering can body 2 provided with any kind of bottom closure and a substantially plane end wall 3 arranged at the upper open end of the can body. The end wall 3 has an emptying opening 4 incorporated beforehand which is covered on the top by means of an outer cover strip 5 applied to the outside of the end wall. The cover strip 5 comprises on the one hand a mounting part 5a, which is connected detachably to the end wall 3 over the emptying opening 4, and on the other hand a readily accessible gripping part 5b by means of which the cover strip 5 is adapted to be removed on opening of the package.
As is evident more clearly from Figure 2, the cover strip 5 is manufactured from a laminated material comprising a central layer of material strong in tension, e.g. iron, and outer coatings 7 and 8 of weldable plastic, e.g. polyester (preferably polyethylene terephthalate).
Figure 2 further illustrates that the end wall 3 too is manufactured from a material comprising a central metallic layer 9 with an outer (plastic) coating 10 of weldable plastics, e.g. polyester (preferably polyethylene terephthalate). The end wall 3 has a downwards directed edge portion 3a serving as a fastening means which extends unbroken around the whole periphery of the end wall and which, at least partially, is inserted in, and is fastened to, the inside of the can body 2 along a liquid-tight and mechanically durable sealing joint around the whole thus inserted part of the edge portion 3a of the end wall.
As pointed out earlier, it is important that the joint between the outer cover strip 5 and the end wall 3, on the one side, should be sufficiently strong to be able to withstand the internal pressure of the package, which in the case of contents such as beer, refreshing beverages and similar carbonated drinks may go up to approx. 7 bar, but that the joint, on the other side, should not be so strong that, on opening of the package, an intentional pulling off of the cover strip is made impossible or is made unnecessarily difficult. In accordance with the invention a desirable optimum joint is obtained in that the cover strip S and the end wall 3 are connected with one another along a sealing joint formed by surface fusion between the plastic coatings 8 and 10 respectively facing one another, and it has been found ln particular that a sealing joint which functions well and is easily controllable can be obtained if the cover strip 5 and the end wall 3 are joined to one another by inductive heating of metal layers 6 and 9 incorporated in the cover strip 5 and the end wall 3 respectively. Such an inductive heat sealing is both rapid and simple and can be carried out with the help of existing conventional equipment. The method, among other things, has the further advantage that it can be easily monitored both with regard to heating period and to temperature, so that a mechanically durable sealing joint which is liquid-tight but easily breakable is obtained around the whole emptying opening 4.
The can body 2, which preferably is of the conical shape indicated in Figures 1 and 2, is also manufactured appropriately from a material comprising a thin inner metal layer 11 and at least one outer coating 12 of weldable plastic, preferably polyethylene terephthalate, facing towards the inside of the package, as a result of which the joint between the inserted part of the edge portion 3a of the end wall 3 and the inner plastic coating 12 of the container body 2 can also be achieved by inductive heating in a manner known in itself.
The example of an embodiment of the invention described here is intended solely to illustrate a particularly suitable embodiment, and it is possible, of course, within the scope of the concept of the invention to realize a number of modifications, both with regard to the composition, and to the general design, of the packing container without departing, for this reason from the actual idea of the invention.
CONTENTS
The present invention relates to a packing container of non-returnable character for liquid, especially pressurized, contents, which comprises at least one plane end wall, an emptying opening incorporated in the end wall and an outer cover strip which is applied over the emptying opening to the outside of the end wall.
In packing technology frequently non-returnable packages of a can character are used for the packaging of liquid, especially pressurized, contents such as beer, refreshing beverages and similar carbonated products.
These known can packages generally consist of a cylindrical can body provided with a base, the upper end of the can body being closed with the help of a, substantially, plane end wall which is seamed onto the cylindrical can body.
The cylindrical can body generally consists of plastic or metal, e.g. iron or aluminum, whereas the plane end wall as a rule always consists of sheet aluminum.
To make the package conveniently openable it is provided in most cases with some type of opening arrangement which on the one hand should make the package readily openable and on the other hand should allow a smooth emptying of the contents from the opened package.
A very usual opening arrangement on such known can packages has a weakened or openable part in the plane end wall which by means of a pull-ring fixed to the weakened or openable part is adapted so that it can be completely pulled off to expose an emptying opening through which the contents of the package can be made accessible. One problem, not infrequently encountered in this, intrinsically simple and in most cases well-functioning, opening arrangement is that the openable end wall has to be manufactured from a relatively soft material, preferably aluminum, which is both soft and easy to process, but which from a point of view of manufacture is a very energy-consuming and thus cost-demanding metal. For the sake of making the package more economical, therefore, it is necessary, among other things, to recover and reuse as much as possible of the aluminum content of the package used, which, however, is counteracted or seriously obstructed by the fact that the part of the end wall of the package pulled off on opening of the package, including the pull-ring, in most cases is thrown away and thus is completely lost after a single use. To the economic loss also comes that the wasted portion of the end wall represents a substantial environmental problem, since it can remain lying about in nature for a very long time before it breaks down through corrosion, and constitutes during this time, because of its sharp edges, a hazard to humans and animals.
Another opening arrangement on known can packages of the type which has been described above consists of an emptying opening incorporated in the end wall of the drum which is covered by a cover strip or similar closure device slued detachably onto the outside of the end wall. This known opening arrangement too is relatively simple and easy to manufacture and as a rule functions well, but it has the disadvantage, among other things, especially in the case of can packages for pressurized contents, that it requires environmentally doubtful and expensive glue to provide the joint between cover strip and package end wall with the required tightness and durability.
The abovementioned inconveniences are avoided in accordance with the present invention in that a packing container of the type described in the introduction has been given the characteristic that the cover strip as well as the said end wall are made of a material comprising a layer of metal and at least one outer coating of weldable plastics and that the cover strip is connected to the end wall along a sealing joint around the whole emptying opening which is liquid-tight, but can be broken up, formed by surface fusion of plastic coatings facing one another on the cover strip and the end wall respectively.
In accordance with a particularly preferred embodiment of the invention the sealing joint between the cover strip and the end wall of the package is produced by inductive heating in a manner known in itself of the metal layers incorporated in the cover strip and the end wall respectively, which has been found to bring about that the package can be closed in a rapid and simple manner and that the actual closing process can be easily monitored both with regard to heating period and temperature and that the sealing joint will be tighter and more durable than, for example, in the case of glueing.
Further preferred embodiments and advantages of the invention have been given, moreover, the characteristics specified in the following subsidiary claims.
The invention will now be described in greater detail with special reference to the attached drawing, wherein Figure 1 shows schematically the top part of a packing container provided with an opening arrangement in accordance with the invention, and Figure 2 shows a central section of the container according to Figure 1.
Although the invention can be applied to all packages of a can character, it is assumed in the special embodiment referred to here that the package, which has been given the general reference designation 1, is of the type which is shown in Figure 1 and which consists of an upwards tapering can body 2 provided with any kind of bottom closure and a substantially plane end wall 3 arranged at the upper open end of the can body. The end wall 3 has an emptying opening 4 incorporated beforehand which is covered on the top by means of an outer cover strip 5 applied to the outside of the end wall. The cover strip 5 comprises on the one hand a mounting part 5a, which is connected detachably to the end wall 3 over the emptying opening 4, and on the other hand a readily accessible gripping part 5b by means of which the cover strip 5 is adapted to be removed on opening of the package.
As is evident more clearly from Figure 2, the cover strip 5 is manufactured from a laminated material comprising a central layer of material strong in tension, e.g. iron, and outer coatings 7 and 8 of weldable plastic, e.g. polyester (preferably polyethylene terephthalate).
Figure 2 further illustrates that the end wall 3 too is manufactured from a material comprising a central metallic layer 9 with an outer (plastic) coating 10 of weldable plastics, e.g. polyester (preferably polyethylene terephthalate). The end wall 3 has a downwards directed edge portion 3a serving as a fastening means which extends unbroken around the whole periphery of the end wall and which, at least partially, is inserted in, and is fastened to, the inside of the can body 2 along a liquid-tight and mechanically durable sealing joint around the whole thus inserted part of the edge portion 3a of the end wall.
As pointed out earlier, it is important that the joint between the outer cover strip 5 and the end wall 3, on the one side, should be sufficiently strong to be able to withstand the internal pressure of the package, which in the case of contents such as beer, refreshing beverages and similar carbonated drinks may go up to approx. 7 bar, but that the joint, on the other side, should not be so strong that, on opening of the package, an intentional pulling off of the cover strip is made impossible or is made unnecessarily difficult. In accordance with the invention a desirable optimum joint is obtained in that the cover strip S and the end wall 3 are connected with one another along a sealing joint formed by surface fusion between the plastic coatings 8 and 10 respectively facing one another, and it has been found ln particular that a sealing joint which functions well and is easily controllable can be obtained if the cover strip 5 and the end wall 3 are joined to one another by inductive heating of metal layers 6 and 9 incorporated in the cover strip 5 and the end wall 3 respectively. Such an inductive heat sealing is both rapid and simple and can be carried out with the help of existing conventional equipment. The method, among other things, has the further advantage that it can be easily monitored both with regard to heating period and to temperature, so that a mechanically durable sealing joint which is liquid-tight but easily breakable is obtained around the whole emptying opening 4.
The can body 2, which preferably is of the conical shape indicated in Figures 1 and 2, is also manufactured appropriately from a material comprising a thin inner metal layer 11 and at least one outer coating 12 of weldable plastic, preferably polyethylene terephthalate, facing towards the inside of the package, as a result of which the joint between the inserted part of the edge portion 3a of the end wall 3 and the inner plastic coating 12 of the container body 2 can also be achieved by inductive heating in a manner known in itself.
The example of an embodiment of the invention described here is intended solely to illustrate a particularly suitable embodiment, and it is possible, of course, within the scope of the concept of the invention to realize a number of modifications, both with regard to the composition, and to the general design, of the packing container without departing, for this reason from the actual idea of the invention.
Claims (27)
1. A container having an interior for holding contents, comprising: a body, an end wall located at one end of the body, an opening formed in the end wall for emptying the contents of the container, and an outer cover strip covering the opening, said end wall being formed of a metal layer and a coating of weldable plastic material, said metal layer of said end wall having an inwardly facing surface which faces towards the interior of the container and an oppositely positioned outwardly facing surface, said opening being defined by a peripheral wall extending between the inwardly and outwardly facing surfaces of the metal layer, said coating of weldable plastic material being disposed on and in contact with at least the outwardly facing surface of the metal layer of the end wall, said coating of weldable plastic material also being disposed on and in contact with substantially the entire peripheral wall that defines the opening in the end wall, said cover strip being formed of a metal layer which has a coating of weldable plastic material disposed on at least one side thereof, said coating of plastic material on the at least one side of the cover strip being in contact with and sealed to the coating of plastic material disposed on the outwardly facing surface of the metal layer of the end wall along a liquid-tight sealing joint that surrounds the opening, said cover strip including a mounting part and a gripping part, said mounting part having an outermost peripheral edge, and wherein the outermost peripheral edge of the mounting part of the cover strip is sealed to the end wall.
2. The container according to claim 1, wherein the metal layer in the end wall is formed at least partially of iron.
3. The container according to claim 1, wherein the metal layer in the cover strip is formed at least partially of iron.
4. The container according to claim 1, wherein the weldable plastic material on the cover strip and the end wall is a polyester material.
5. The container according to claim 4, wherein said polyester material is polyethylene terephthalate.
6. The container according to claim 1, wherein said end wall has an edge portion integrally formed therewith and extending therefrom, said edge portion being secured to the body.
7. The container according to claim 6, wherein said body tapers towards the end wall, said edge portion of the end wall being secured to an inner surface of the tapering body for securing the end wall to the body.
8. The container according to claim 1, wherein said cover strip includes a mounting part and a gripping part formed integrally with and extending from the mounting part, said mounting part being secured to the end wall and covering the opening.
9. The container according to claim 1, wherein said body is formed of a metal layer and a coating of plastic material that faces the interior of the container, said end wall having an edge portion that is surface fused to said coating of plastic material on the body.
10. The container according to claim 9, wherein the coatings of plastic material forming a part of the body, the end wall, and the cover strip are polyester material.
11. The container according to claim 10, wherein the coatings of plastic material forming a part of the body, the end wall, and the cover strip are polyethylene terephthalate.
12. The apparatus according to claim 1, wherein said cover strip includes a mounting part and a gripping part, the thickness of the coatings of plastic material positioned between the metal layer of the end wall and the metal layer of the mounting part after the coatings of plastic material have been sealed to one another is substantially constant over the entire area of the mounting member.
13. The container according to claim 1, wherein said end wall includes an end wall portion and an edge portion extending from the end wall portion, said body including a side wall having an inner surface, said opening for emptying the contents of the container being formed in the end wall portion, said edge portion extending downwardly from said end wall portion and terminating in a free end so that said end wall portion and said edge portion together define a truncated coneshaped member, and wherein an outer peripheral surface of said edge portion is sealed to the inner surface of the side wall of the body, said free end of the edge portion being coated with plastic material, said end wall portion being positioned above the free end of the edge portion.
14. The container according to claim 1, wherein said body includes a side wall, said outer cover strip being positioned above said side wall of said body.
15. A container for holding pourable contents comprising: a hollow body having a side wall and an open end; an end wall member mounted in said open end, said end wall member having a substantially flat end wall portion and an edge portion integrally formed therewith, said edge portion being sealed in a liquid-tight manner to an inner surface of said side wall adjacent said open end; a pouring opening formed in the end wall portion for pouring the contents out of the hollow body, said pouring opening being defined by a peripheral wall; and a cover strip covering the pouring opening, said cover strip including a mounting part and a gripping part integrally formed with and extending away from the mounting part, said mounting part having an outermost peripheral edge, said mounting part and said end wall member being formed of a central metal layer coated on both sides with a coating of plastic material, the coating of plastic material on one side of the central metal layer of the mounting part facing and being sealed through surface fusion to the coating of plastic material on one side of the central metal layer of the end wall member along a liquid-tight sealing joint that surrounds the pouring opening, the coating of plastic material on the end wall member being disposed on and in contact with substantially the entire peripheral wall that defines the pouring opening in the end wall portion, the thickness of the coatings of plastic material positioned between the metal layer of the end wall member and the metal layer of the mounting part after the coatings of plastic material have been sealed to one another being substantially constant over the entire area of the mounting part.
16. The container according to claim 15, wherein said edge portion extends downwardly from said end wall portion and terminates in a free end so that said end wall portion and said edge portion together define a truncated cone-shaped member, and wherein an outer peripheral surface of said edge portion is sealed to the inner surface of the side wall of the body, said free end of the edge portion being coated with plastic material, said end wall portion being positioned above the free end of the edge portion.
17. The container according to claim 15, wherein said body is formed of a metal layer and a coating of plastic material which faces towards an interior of the container.
18. The container according to claim 17, wherein the coatings of plastic material forming a part of the body, the end wall member, and the cover strip are polyester material.
19. The container according to claim 18, wherein the coatings of plastic material forming a part of the body, the end wall member, and the cover strip are polyethylene terephthalate.
20. The apparatus according to claim 15, wherein outermost portions of the mounting part of the cover strip adjacent the periphery are sealed to the end wall member.
21. The container according to claim 15, wherein said cover strip is positioned above said side wall of said body.
22. A method of forming an opening arrangement on a container, comprising the steps of: forming a container having an end wall located at one end thereof, said end wall including a metal layer, forming an opening in the end wall so that said opening is defined by an inner peripheral wall that extends between upper and lower surfaces of said end wall, applying a coating of weldable plastic material to the metal layer of the end wall so that the coating of weldable plastic material is in contact with the metal layer on at least one side of the metal layer and so that the coating of weldable plastic material covers substantially the entire inner peripheral wall of the opening; providing a cover strip formed of a metal layer and a coating of weldable plastic material in contact with the metal layer on at least one side of the metal layer; and sealing the cover strip to the end wall by sealing the coating of weldable plastic material of the cover strip directly to and in contact with the coating of weldable plastic material of the end wall, and cover strip being sealed to the end wall such that the cover strip covers the opening in the end wall.
23. The method according to claim 22, wherein said container is formed with a hollow body having a side wall that is shaped to define an interior and to form an opening, said side wall of said hollow body being made of a metal layer and a coating of plastic material on at least a side of the metal layer that faces the interior of the body; said end wall including an end wall member having a substantially flat end wall portion and an edge portion integrally formed therewith and extending therefrom, said edge portion being formed of a metal layer having an outwardly facing surface and a coating of plastic material entirely covering the outwardly facing surface of the metal layer; and sealing said coating of plastic material on the side wall of the body to said coating of plastic material on the edge portion of the end wall member so that the end wall portion of the end wall member defines the end wall of the container.
24. The method according to claim 22, wherein said coating of weldable plastic material on the cover strip is sealed to said coating of weldable plastic material on the end wall through induction heating.
25. The method according to claim 22, wherein said cover strip includes a mounting part and a gripping part, said mounting part having outermost portions adjacent the periphery and wherein said step of sealing the cover strip to the end wall includes sealing said outermost portions of the mounting part to the end wall.
26. Packaging container comprising a container body, at least one end wall, an emptying opening in said end wall, and an outer cover strip applied over said emptying opening to the outside of said end wall, wherein said cover strip as well as said end wall consist of a material comprising a metal layer and at least one outer coating of weldable plastic material and wherein said cover strip is connected to said end wall along a sealing joint around the whole emptying opening which is liquid-tight but can be broken up, formed by surface fusion of plastic material, characterized in that said end wall comprises a downwardly directed edge portion which serves as a fastening means and which is at least partially inserted into its outer plastic coating and which is liquid-tightly and mechanically durably sealed to the inside of an upwardly tapering container body and that said sealing joint around said emptying opening is formed by the outer plastic coating of said cover strip and of said end wall.
27. Packing container as claimed in claim 26, characterized in that said edge portion is sealed to the inside of the upper open end of a conical container body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8901092A SE500525C2 (en) | 1989-03-29 | 1989-03-29 | Packaging containers for liquid, especially pressurized fillers |
| SE8901092-0 | 1989-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2011319A1 CA2011319A1 (en) | 1990-09-29 |
| CA2011319C true CA2011319C (en) | 1998-09-15 |
Family
ID=20375482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002011319A Expired - Fee Related CA2011319C (en) | 1989-03-29 | 1990-03-02 | Packing container for liquid, especially pressurized contents |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0389792B2 (en) |
| JP (1) | JP2836898B2 (en) |
| AT (1) | ATE92421T1 (en) |
| AU (1) | AU625865B2 (en) |
| CA (1) | CA2011319C (en) |
| DE (2) | DE69002499D1 (en) |
| DK (1) | DK0389792T3 (en) |
| ES (1) | ES2044267T5 (en) |
| GR (1) | GR3026409T3 (en) |
| RU (1) | RU1833338C (en) |
| SE (1) | SE500525C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10034298A1 (en) * | 2000-07-14 | 2002-01-24 | Steinbeis Ppl Gmbh | Closure arrangement at an opening in a container wall |
| EP1209085A1 (en) * | 2000-11-17 | 2002-05-29 | SEDA S.p.A. | Process for making a container for solid or frozen food and container thereof |
| USD906799S1 (en) | 2020-01-28 | 2021-01-05 | Blue Buffalo Enterprises, Inc. | Vacuum package |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US898293A (en) * | 1907-10-16 | 1908-09-08 | Warren Mfg Co | Container. |
| CH563284A5 (en) * | 1972-05-20 | 1975-06-30 | Hesser Ag Maschf | |
| AT361313B (en) * | 1979-04-19 | 1981-03-10 | Vmw Ranshofen Berndorf Ag | METAL BOTTLE |
| CA1172995A (en) * | 1981-03-02 | 1984-08-21 | Hiroshi Ueno | Easily openable vessel closure and process for preparation thereof |
| CH650210A5 (en) * | 1981-03-17 | 1985-07-15 | Aluminiumwerke Ag Rorschach | CAN CAN WITH TIN BODY. |
| JPS5993639A (en) * | 1982-11-19 | 1984-05-30 | 東洋製罐株式会社 | Shock-resisting easy open vessel cover |
| JPS59126919U (en) * | 1983-02-15 | 1984-08-27 | 四国化工機株式会社 | Paper-based sealed container |
| JPS59186219U (en) * | 1983-05-31 | 1984-12-11 | 大日本印刷株式会社 | Container with peel-off tape |
| CH665400A5 (en) * | 1984-04-24 | 1988-05-13 | Weidenhammer Packungen | COMBIDOSE. |
| JPS61142141A (en) * | 1984-12-14 | 1986-06-30 | 東洋製罐株式会社 | Sealed vessel |
| JPS61113217U (en) * | 1984-12-26 | 1986-07-17 |
-
1989
- 1989-03-29 SE SE8901092A patent/SE500525C2/en unknown
-
1990
- 1990-02-22 DK DK90103401.7T patent/DK0389792T3/en active
- 1990-02-22 DE DE9090103401A patent/DE69002499D1/en not_active Expired - Fee Related
- 1990-02-22 ES ES90103401T patent/ES2044267T5/en not_active Expired - Lifetime
- 1990-02-22 EP EP90103401A patent/EP0389792B2/en not_active Expired - Lifetime
- 1990-02-22 DE DE69002499T patent/DE69002499T3/en not_active Expired - Lifetime
- 1990-02-22 AT AT90103401T patent/ATE92421T1/en not_active IP Right Cessation
- 1990-03-02 CA CA002011319A patent/CA2011319C/en not_active Expired - Fee Related
- 1990-03-28 JP JP2080572A patent/JP2836898B2/en not_active Expired - Fee Related
- 1990-03-28 AU AU52327/90A patent/AU625865B2/en not_active Ceased
- 1990-03-28 RU SU904743464A patent/RU1833338C/en not_active IP Right Cessation
-
1998
- 1998-03-19 GR GR980400519T patent/GR3026409T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02282043A (en) | 1990-11-19 |
| SE500525C2 (en) | 1994-07-11 |
| DE69002499D1 (en) | 1993-09-09 |
| RU1833338C (en) | 1993-08-07 |
| DE69002499T3 (en) | 1998-05-28 |
| DE69002499T4 (en) | 1994-08-11 |
| GR3026409T3 (en) | 1998-06-30 |
| SE8901092D0 (en) | 1989-03-29 |
| CA2011319A1 (en) | 1990-09-29 |
| AU5232790A (en) | 1990-10-04 |
| DK0389792T3 (en) | 1993-09-27 |
| ATE92421T1 (en) | 1993-08-15 |
| JP2836898B2 (en) | 1998-12-14 |
| SE8901092L (en) | 1990-09-30 |
| AU625865B2 (en) | 1992-07-16 |
| EP0389792B1 (en) | 1993-08-04 |
| EP0389792A1 (en) | 1990-10-03 |
| ES2044267T3 (en) | 1994-01-01 |
| EP0389792B2 (en) | 1998-03-18 |
| ES2044267T5 (en) | 1998-06-16 |
| DE69002499T2 (en) | 1993-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |