CA2008051A1 - Packaging container having flexible bag with closeable outlet bung in rigid outer case - Google Patents
Packaging container having flexible bag with closeable outlet bung in rigid outer caseInfo
- Publication number
- CA2008051A1 CA2008051A1 CA 2008051 CA2008051A CA2008051A1 CA 2008051 A1 CA2008051 A1 CA 2008051A1 CA 2008051 CA2008051 CA 2008051 CA 2008051 A CA2008051 A CA 2008051A CA 2008051 A1 CA2008051 A1 CA 2008051A1
- Authority
- CA
- Canada
- Prior art keywords
- outlet
- bung
- section
- closure cap
- tube
- 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.)
- Abandoned
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
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
- B65D47/26—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with slide valves, i.e. valves that open and close a passageway by sliding over a port, e.g. formed with slidable spouts
- B65D47/261—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with slide valves, i.e. valves that open and close a passageway by sliding over a port, e.g. formed with slidable spouts having a rotational or helicoidal movement
- B65D47/263—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with slide valves, i.e. valves that open and close a passageway by sliding over a port, e.g. formed with slidable spouts having a rotational or helicoidal movement between tubular parts
-
- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
- B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
- B65D77/062—Flexible containers disposed within polygonal containers formed by folding a carton blank
- B65D77/065—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container
- B65D77/067—Spouts, pouring necks or discharging tubes fixed to or integral with the flexible container combined with a valve, a tap or a piercer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/04—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer
- B67D3/047—Liquid-dispensing taps or cocks adapted to seal and open tapping holes of casks, e.g. for beer with a closing element having a rotational movement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Bag Frames (AREA)
- Packages (AREA)
Abstract
ABSTRACT OF THE INVENTION
A packaging container for accommodating a liquid product is formed by a flexible bag mounted in a rigid outer case with a closeable outlet bung and an opening associated therewith.
The outlet bung is fixed to the rim of the opening by a support integrally formed on the neck of the bung, and is provided with a laterally directed product outlet tube which branches radially sideways from an axially directed upper part of the outlet bung. The outlet cross-section of the bung is closed and opened by means of a cylindrical tube extending into the upper part with a corresponding opening of a closure cap rotatable relative to the outlet bung. A fixing flange extending radially outwards is formed between the upper part and the bung neck, is made in two parts, and provides a passage cross-section for the closure that is as large as possible, while maintaining a reliable sealing effect. The tubular upper part is integrally formed with the lateral product outlet tube on the outer edge of the fixing flange, the bung neck being extended beyond the fixing flange into the lower end of the upper part beneath the product outlet tube, via an inner tube section. An annular gap is formed between the upper part and the inner tube section, for sealingly receiving the inner tube of the closure cap.
A packaging container for accommodating a liquid product is formed by a flexible bag mounted in a rigid outer case with a closeable outlet bung and an opening associated therewith.
The outlet bung is fixed to the rim of the opening by a support integrally formed on the neck of the bung, and is provided with a laterally directed product outlet tube which branches radially sideways from an axially directed upper part of the outlet bung. The outlet cross-section of the bung is closed and opened by means of a cylindrical tube extending into the upper part with a corresponding opening of a closure cap rotatable relative to the outlet bung. A fixing flange extending radially outwards is formed between the upper part and the bung neck, is made in two parts, and provides a passage cross-section for the closure that is as large as possible, while maintaining a reliable sealing effect. The tubular upper part is integrally formed with the lateral product outlet tube on the outer edge of the fixing flange, the bung neck being extended beyond the fixing flange into the lower end of the upper part beneath the product outlet tube, via an inner tube section. An annular gap is formed between the upper part and the inner tube section, for sealingly receiving the inner tube of the closure cap.
Description
~ 200805~. ~
PACKAGING CONTAINER HAVING FLEXIBLE BAG WITH
CLOSEABLE OUTLET BUNG IN RIGID OUTER CASE
BACKGROUND
1.0 Field of the Invention:
This invention relates generally to packaging containers, and more particularly to packaging containers for accommodating a liquid product which is formed by a flexible bag mounted in a rigid outer case with a closeable outlet bung.
PACKAGING CONTAINER HAVING FLEXIBLE BAG WITH
CLOSEABLE OUTLET BUNG IN RIGID OUTER CASE
BACKGROUND
1.0 Field of the Invention:
This invention relates generally to packaging containers, and more particularly to packaging containers for accommodating a liquid product which is formed by a flexible bag mounted in a rigid outer case with a closeable outlet bung.
2.0 Discussion of Related Art:
, An earlier, as yet unpublished patent application in the name of the same applicant (P 38 41 353) relates to a packaging container of this type in which the closeable container outlet is preferably in three parts. The closeable container outlet consists of a flexible bag, for example by welding to a fixed .... .
~ support, an outlet bung designed to be pressed into this .,~. ~ , support and a closure cap. The outlet bung is provided with a laterally directed product outlet tube which branches radially sidew'ays from an axially directed cylindrical inner tube of the outlet bung, its outlet cross-section being designed to be closed and opened by means of a cylindrical tube extending into the inner tube ~ith a corresponding opening of a closure cap rotatable relative to the outlet bung. The cross-section of the cylindrical inner tube of the outlet bung is considerably ~ narrower than the cross-section of the support which can give ,~
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rise to complications where media of relatively high viscosity are used. However, this problem does not arise during filling, because the outlet bung is separated from the support, and is only pressed into the support after filling.
However, if the closure is made in two parts, i.e. if the support and outlet bung consist of only one part onto which the closure cap can be pressed, only the narrow cross-section of the cylindrical inner tube of the outlet bung is available for filling and emptying, with the result that filling in particular is made slower, leading to longer filling times and hence higher costs. Although the closure as a whole could be made larger to obtain a larger cross-section, this would lead to higher material costs and hence to higher production costs.
In addition, the packaging container would have to be made larger to accommodate this larger closure.
, An earlier, as yet unpublished patent application in the name of the same applicant (P 38 41 353) relates to a packaging container of this type in which the closeable container outlet is preferably in three parts. The closeable container outlet consists of a flexible bag, for example by welding to a fixed .... .
~ support, an outlet bung designed to be pressed into this .,~. ~ , support and a closure cap. The outlet bung is provided with a laterally directed product outlet tube which branches radially sidew'ays from an axially directed cylindrical inner tube of the outlet bung, its outlet cross-section being designed to be closed and opened by means of a cylindrical tube extending into the inner tube ~ith a corresponding opening of a closure cap rotatable relative to the outlet bung. The cross-section of the cylindrical inner tube of the outlet bung is considerably ~ narrower than the cross-section of the support which can give ,~
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rise to complications where media of relatively high viscosity are used. However, this problem does not arise during filling, because the outlet bung is separated from the support, and is only pressed into the support after filling.
However, if the closure is made in two parts, i.e. if the support and outlet bung consist of only one part onto which the closure cap can be pressed, only the narrow cross-section of the cylindrical inner tube of the outlet bung is available for filling and emptying, with the result that filling in particular is made slower, leading to longer filling times and hence higher costs. Although the closure as a whole could be made larger to obtain a larger cross-section, this would lead to higher material costs and hence to higher production costs.
In addition, the packaging container would have to be made larger to accommodate this larger closure.
3.0 Summary of the Invention:
An object of the invention is to provide a solution which enables the closure of a container of the type in question to be made in two parts in such a way that despite a minimal consumption of material, the passage cross-section of the `~ closure is as large as possible, while at the same time, a reliable sealing effect is maintained.
Another object of the invention is to provide a compact ~ closure for a packaging container. In a packaging container of ; 25 the type mentioned above, the present invention in one embodiment includes the tubular upper part integrally formed with the lateral product outlet tube on the outer edge of a ` 2 -` 2008051 fixing flange, and the bung neck is extended beyond the fixing flange into the lower end of the upper part beneath the product outlet tube, by means of an inner tube section, in such a way that an annular gap is formed between the upper part and the inner tube section for sealingly receiving the inner tube of the closure cap.
The present invention with a bung/tap closùre, ensures that the full opening cross-section of the container opening in the outlet bung is available for filling of the container, because all guide, sealing and locking elements are situated outside the container opening. Even after the closure cap has been pressed in, there is no reduction in the passage cross-section relative to the container opening right up to the product outlet tube, so that this closure may also be used without difficulty for media of relatively high viscosity. The sealing effect is better than in the known closure system because the opening of the closure cap and the outlet cross-section of the product outlet tube in the closed position are further apart from one another. In addition, the closure saves space and material because it is simpler in design than the ~ known closure, i.e. for example it requires no cylindrical ;~ inner tube in the outlet bung.
One advantageous embodiment of the invention includes an encircling snap bead arranged in the region of the annular gap ~.~
~ 25 on the upper part of the outlet bung, and at least one - encircling snap groove formed at the lower end of the cylindrical tube of the closure cap. This connection between the closure cap and the outlet bung provides for safe locking :
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of both elements and for effective guiding of the closure cap in the outlet bung, during turning of the cap to open or close the container. The connection between the two elements is established by pressing in the closure cap after filling of the container.
In a preferred embodiment, two encircling snap grooves are formed at the lower end of the cylindrical tube of the closure cap. By means of this additional snap groove, the closure cap may be initially pressed onto the outlet bung in a pre-fit position before filling of the container by pressing in the closure cap only until the snap bead of the outlet bung snaps into the lower snap groove of the closure cap. For filling, the closure cap is removed, and after filling, is pressed fully into the outlet bung, i.e. by snapping of the snap bead in the second snap groove.
In another embodiment, particularly effective sealing between the outlet bung and the closure cap is obtained, via - ... .
the inner tube section of the outlet bung widening conically towards the fixing flange in the region of the annular gap, and the lower end of the cylindrical tube of the closure cap being beveled correspondingly conically inward. After the closure cap has been fully pressed in, these conical sealing surfaces bear sealingly against one another.
::, Another advantageous embodiment of the invention includes ~ ~
25 the closure cap surrounding the upper end of the upper part of ~ -the outlet bung with a cylindrical outer wall to form a second ~annular gap. This design of the closure cap provides a second -;~guide between the closure cap and the outlet bung, which makes -,'"" ~!~ i ' ,: . ,i , ,;": , ,, . . . ~:, , ~ ; ' ',, .' ' .' ' ,' ', ' . : ' ' ' ~ . : ' . . ' ' 200805~
the closure cap easier to turn for opening and closing.
In yet another embodiment, an encircling snap bead is arranged on the cylindrical tube of the closure cap in the region of the second annular gap, and at least one inner encircling snap groove is formed at the upper end of the upper part of the outlet bung. Two inner encircling snap grooves may also be formed at the upper end of the upper part of the outlet bung. This additional locking mechanism at the upper end of the outlet bung further improves guiding between both elements, the provision of two snap grooves also creating an additional locking effect in the pre-fit position.
Finally, in another embodiment of the invention, the outlet cross-section of the product outlet tube and the opening of the cylindrical tube of the closure cap are oval in shape.
The outlet cross-section or the opening is provided with a peripheral bead on the mutually opposite side. This embodiment with the enlarged outlet cross-section is particularly appropriate where media of relatively high viscosity are to be used. The additional peripheral bead in the connection zone guarantees safe sealing between the outlet bung and the closure cap, insuring that the product is unable to flow out unintentionally.
, BRIEF DESCRIPTION OF THE DRAWINGS
Examples of various embodiments of the invention are described in detail below with reference to the accompanying drawings, in which like items are identified by the same reference number, wherein:
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Fig. 1 is a cross-section through an outlet bung according to the invention on the line 1-1 in Fig. 2.
Fig. 2 is a plan view of the outlet bung shown in Fig. 1.
Fig. 3 is a section through a closure cap for the outlet bung shown in Figs. 1 and 2 on the line 3-3 in Fig. 4.
Fig. 4 is a bottom view of the closure cap of Fig. 3.
Fig. 5 is a section on a larger scale through part of an outlet bung with the closure cap in the pre-fit position.
Fig. 6 is also a section on a larger scale throuqh the ~-outlet bung shown in Fig. 5 with the closure cap in its final-fit position. ~
DETAILED DESCRIPTION OF THE INVENTION -Provided in a multiple-ply carton 1, of a packaging ~ ;
container shown purely schematically in Figure 1, is an outlet bung generally denoted by the reference 2, on the neck 3 of which a flange 4 is integrally formed in the form of a welding flange. A plastic bag 5 arranged in the carton 1 is welded in liquid-tight manner to flange 4. The opening of the welding flange 4 is situated directly over an opening 6 of the plastic bag 5.
The outlet bung 2 comprises an encircling fixing flange or edge 7 on the outer rim of which is integrally formed a tubular upper part 8, of which the internal diameter is larger `~than the internal diameter of the bung neck 3. A product outlet tube 9 directed radially sideways with an outlet cross-section 10 is provided on one side of the upper part 8. A
shoulder 12 is formed at the upper free end 11 of the upper ;; ~ 6 ~ , 200805~L
part 8, extending over slightly more than quarter of a circle and being arranged diagonally opposite the product outlet tube 9 (see Fig. 2).
The bung neck 3 is extended beyond the fixing flange 7, into the interior of the cylindrical upper part 8 below the product outlet tube 9, into an inner tube section 13. An .
encircling annular gap 14 is formed between the upper part 8 and the inner tube section 13.
A closure cap for the outlet bung 2, generally denoted by the reference numeral 15, is shown in Figs. 3 and 4. The closure cap 15 comprises a cylindrical tube 16 with a lateral opening 17, of which the opening cross-section corresponds to the outlet cross-section 10 of the product outlet tube 9 at the : outlet bung 2. The cylindrical tube 16 is closed at its upper end by a head plate 18 on which is integrally formed a cylindrical outer wall 19, which projects beyond the outer diameter of the cylindrical tube 16, forming a second annular gap 20 between the cylindrical outer wall 19 and the cylindrical tube 16, for fitting onto the tubular upper part 8 ~: 20 of the outlet bung 2.
A projecting stud 21 is provided in the second annular gap 20 offset through about 90 to the position of the opening 17. The stud 21 is slightly lower in height than the shoulder 12 on the outlet bung 2. A web 22 is integrally formed parallel to the axis of the opening 17 on the upper side of the head plate 18.
A complete closure with the outlet bung 2 and closure cap 15 is shown in various positions in Figs 5 and 6. Fig. 5 shows '~
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a pre-fit position of the closure cap 15 relative to the outlet bung 2. This means that, at the production stage, the welding flange 4 of the outlet bung 2 is first welded to the plastic bag 5. Next, the closure cap 15 is pressed onto the outlet bung 2 in such a way that a certain minimum interval, for example of 3.0 mm, remains between the lower end of the cylindrical outer wall 19 of the closure cap 15 and the upper edge of the product outlet tube 9 of the outlet bung 2.
To this end, an encircling snap bead 23 is formed on the upper part 8 of the outlet bung 2 in the region.of the annular gap 14. Two encircling snap grooves 24, 25 are provided above one another at the lower end of the cylindrical tube 16 of the closure cap 15. In addition, an encircling snap bead 26 is formed on the cylindrical tube 16 of the closure cap 2 in the region of the second annular gap 20. Snap bead 26 is designed to snap into two inner encircling snap grooves 27, 28 at the upper end of the upper part 8 of the outlet bung 2.
In the pre-fit position shown in Fig. 5, the lower snap groove 24 in the cylindrical tube 16 of the closure cap 15 engages over the encircling snap bead 23 of the outlet bung 2.
~: At the same time, the upper snap groove 27 in the upper part 8 ~: engages in the snap bead 26 around the cylindrical tube 16.
The lower end of the cylindrical tube 16 of the closure cap 15 is àlready engaged in the annular gap 14 of the outlet bung 2, while the upper end 11 of the upper part 8 of the outlet bung 2 ¦~ is already engaged in the second annular gap 20 of the closure cap 15.
In this pre-fit position, the packaging container plus :~
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closure may then be introduced into a filling machine where the closure cap 15 is removed, by corresponding parts of the machine, before filling of the plastic bag 5. After filling, the container is finally closed by pressing closure cap 15 into a final-fit position.
During the closing step in the final-fit position (Fig.
6), the closure cap 15 passes over the previous snap connection between the groove 24 and the bead 23, and between the groove 27 and the bead 26, by penetrating at the lower end of its cylindrical tube 16 into the annular gap 14 until the upper snap groove 25 in the cylindrical tube 16 snaps into the snap bead 23 around the outlet bung 2. At the same time, the lower snap groove 28 in the upper part 8 of the outlet bung 2 snaps into the snap bead 26 around the cylindrical tube 16 of the closure cap 15, so that a firm connection is established between both components.
;~ To guarantee a liquid-tight connection between the closure cap 15 and the outlet bung 2, the inner tube section 13 of the outlet bung 2 is provided in the region of the annular gap 14 with a conical annular surface 29, while the lower end of the cylindrical tube 16 of the closure cap 15 is provided with a corresponding conical surface 30 on the inside. In the final-fit position, the surfaces 29, 30 bear sealing against one another, although a narrow air gap 31 is left in the : ,~
annular gap 14.
From the open position shown in Fig. 6, the container can be closed by turning the closure cap 15. To this end, the closure cap 15 may be turned through about 90 along the .: , .
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shoulder 13 of the upper part 8 by means of the web 22.
Further turning is prevented by the stud 21 on the closure cap 15. Through the turning movement, the opening 17 in the cylindrical tube 16 is moved away from the product outlet tube 9, closing the outlet cross-section 10 via the wall surface of the cylindrical tube 16 of the closure cap 15.
To enlarge the outlet cross-section 10 of the product outlet tube 9, the outlet cross-section 10 and the opening 17 in the cylindrical tube 16 of the closure cap 15 can be made oval in shape. In order to guarantee adequate sealing in this embodiment, the outlet cross-section 10 or the opening 17 is provided with a peripheral bead 32 on the mutually opposite side, as shown in Fig. 6. An enlarged outlet opening such as this is appropriate, for example, in cases where the packaging container~is used for media of relatively high viscosity.
The invention is not meant to be confined to the examples of various embodiments shown in the drawings, and described herein for purposes of illustration. Further embodiments of the invention are possible without departing from the basic scope and spirit of the appended claims. For example, the ~; additional peripheral bead 32 may be provided for particularly free-flowing media, even where the product outlet tube 9 has a round outlet cross-section 10.
An object of the invention is to provide a solution which enables the closure of a container of the type in question to be made in two parts in such a way that despite a minimal consumption of material, the passage cross-section of the `~ closure is as large as possible, while at the same time, a reliable sealing effect is maintained.
Another object of the invention is to provide a compact ~ closure for a packaging container. In a packaging container of ; 25 the type mentioned above, the present invention in one embodiment includes the tubular upper part integrally formed with the lateral product outlet tube on the outer edge of a ` 2 -` 2008051 fixing flange, and the bung neck is extended beyond the fixing flange into the lower end of the upper part beneath the product outlet tube, by means of an inner tube section, in such a way that an annular gap is formed between the upper part and the inner tube section for sealingly receiving the inner tube of the closure cap.
The present invention with a bung/tap closùre, ensures that the full opening cross-section of the container opening in the outlet bung is available for filling of the container, because all guide, sealing and locking elements are situated outside the container opening. Even after the closure cap has been pressed in, there is no reduction in the passage cross-section relative to the container opening right up to the product outlet tube, so that this closure may also be used without difficulty for media of relatively high viscosity. The sealing effect is better than in the known closure system because the opening of the closure cap and the outlet cross-section of the product outlet tube in the closed position are further apart from one another. In addition, the closure saves space and material because it is simpler in design than the ~ known closure, i.e. for example it requires no cylindrical ;~ inner tube in the outlet bung.
One advantageous embodiment of the invention includes an encircling snap bead arranged in the region of the annular gap ~.~
~ 25 on the upper part of the outlet bung, and at least one - encircling snap groove formed at the lower end of the cylindrical tube of the closure cap. This connection between the closure cap and the outlet bung provides for safe locking :
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of both elements and for effective guiding of the closure cap in the outlet bung, during turning of the cap to open or close the container. The connection between the two elements is established by pressing in the closure cap after filling of the container.
In a preferred embodiment, two encircling snap grooves are formed at the lower end of the cylindrical tube of the closure cap. By means of this additional snap groove, the closure cap may be initially pressed onto the outlet bung in a pre-fit position before filling of the container by pressing in the closure cap only until the snap bead of the outlet bung snaps into the lower snap groove of the closure cap. For filling, the closure cap is removed, and after filling, is pressed fully into the outlet bung, i.e. by snapping of the snap bead in the second snap groove.
In another embodiment, particularly effective sealing between the outlet bung and the closure cap is obtained, via - ... .
the inner tube section of the outlet bung widening conically towards the fixing flange in the region of the annular gap, and the lower end of the cylindrical tube of the closure cap being beveled correspondingly conically inward. After the closure cap has been fully pressed in, these conical sealing surfaces bear sealingly against one another.
::, Another advantageous embodiment of the invention includes ~ ~
25 the closure cap surrounding the upper end of the upper part of ~ -the outlet bung with a cylindrical outer wall to form a second ~annular gap. This design of the closure cap provides a second -;~guide between the closure cap and the outlet bung, which makes -,'"" ~!~ i ' ,: . ,i , ,;": , ,, . . . ~:, , ~ ; ' ',, .' ' .' ' ,' ', ' . : ' ' ' ~ . : ' . . ' ' 200805~
the closure cap easier to turn for opening and closing.
In yet another embodiment, an encircling snap bead is arranged on the cylindrical tube of the closure cap in the region of the second annular gap, and at least one inner encircling snap groove is formed at the upper end of the upper part of the outlet bung. Two inner encircling snap grooves may also be formed at the upper end of the upper part of the outlet bung. This additional locking mechanism at the upper end of the outlet bung further improves guiding between both elements, the provision of two snap grooves also creating an additional locking effect in the pre-fit position.
Finally, in another embodiment of the invention, the outlet cross-section of the product outlet tube and the opening of the cylindrical tube of the closure cap are oval in shape.
The outlet cross-section or the opening is provided with a peripheral bead on the mutually opposite side. This embodiment with the enlarged outlet cross-section is particularly appropriate where media of relatively high viscosity are to be used. The additional peripheral bead in the connection zone guarantees safe sealing between the outlet bung and the closure cap, insuring that the product is unable to flow out unintentionally.
, BRIEF DESCRIPTION OF THE DRAWINGS
Examples of various embodiments of the invention are described in detail below with reference to the accompanying drawings, in which like items are identified by the same reference number, wherein:
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Fig. 1 is a cross-section through an outlet bung according to the invention on the line 1-1 in Fig. 2.
Fig. 2 is a plan view of the outlet bung shown in Fig. 1.
Fig. 3 is a section through a closure cap for the outlet bung shown in Figs. 1 and 2 on the line 3-3 in Fig. 4.
Fig. 4 is a bottom view of the closure cap of Fig. 3.
Fig. 5 is a section on a larger scale through part of an outlet bung with the closure cap in the pre-fit position.
Fig. 6 is also a section on a larger scale throuqh the ~-outlet bung shown in Fig. 5 with the closure cap in its final-fit position. ~
DETAILED DESCRIPTION OF THE INVENTION -Provided in a multiple-ply carton 1, of a packaging ~ ;
container shown purely schematically in Figure 1, is an outlet bung generally denoted by the reference 2, on the neck 3 of which a flange 4 is integrally formed in the form of a welding flange. A plastic bag 5 arranged in the carton 1 is welded in liquid-tight manner to flange 4. The opening of the welding flange 4 is situated directly over an opening 6 of the plastic bag 5.
The outlet bung 2 comprises an encircling fixing flange or edge 7 on the outer rim of which is integrally formed a tubular upper part 8, of which the internal diameter is larger `~than the internal diameter of the bung neck 3. A product outlet tube 9 directed radially sideways with an outlet cross-section 10 is provided on one side of the upper part 8. A
shoulder 12 is formed at the upper free end 11 of the upper ;; ~ 6 ~ , 200805~L
part 8, extending over slightly more than quarter of a circle and being arranged diagonally opposite the product outlet tube 9 (see Fig. 2).
The bung neck 3 is extended beyond the fixing flange 7, into the interior of the cylindrical upper part 8 below the product outlet tube 9, into an inner tube section 13. An .
encircling annular gap 14 is formed between the upper part 8 and the inner tube section 13.
A closure cap for the outlet bung 2, generally denoted by the reference numeral 15, is shown in Figs. 3 and 4. The closure cap 15 comprises a cylindrical tube 16 with a lateral opening 17, of which the opening cross-section corresponds to the outlet cross-section 10 of the product outlet tube 9 at the : outlet bung 2. The cylindrical tube 16 is closed at its upper end by a head plate 18 on which is integrally formed a cylindrical outer wall 19, which projects beyond the outer diameter of the cylindrical tube 16, forming a second annular gap 20 between the cylindrical outer wall 19 and the cylindrical tube 16, for fitting onto the tubular upper part 8 ~: 20 of the outlet bung 2.
A projecting stud 21 is provided in the second annular gap 20 offset through about 90 to the position of the opening 17. The stud 21 is slightly lower in height than the shoulder 12 on the outlet bung 2. A web 22 is integrally formed parallel to the axis of the opening 17 on the upper side of the head plate 18.
A complete closure with the outlet bung 2 and closure cap 15 is shown in various positions in Figs 5 and 6. Fig. 5 shows '~
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a pre-fit position of the closure cap 15 relative to the outlet bung 2. This means that, at the production stage, the welding flange 4 of the outlet bung 2 is first welded to the plastic bag 5. Next, the closure cap 15 is pressed onto the outlet bung 2 in such a way that a certain minimum interval, for example of 3.0 mm, remains between the lower end of the cylindrical outer wall 19 of the closure cap 15 and the upper edge of the product outlet tube 9 of the outlet bung 2.
To this end, an encircling snap bead 23 is formed on the upper part 8 of the outlet bung 2 in the region.of the annular gap 14. Two encircling snap grooves 24, 25 are provided above one another at the lower end of the cylindrical tube 16 of the closure cap 15. In addition, an encircling snap bead 26 is formed on the cylindrical tube 16 of the closure cap 2 in the region of the second annular gap 20. Snap bead 26 is designed to snap into two inner encircling snap grooves 27, 28 at the upper end of the upper part 8 of the outlet bung 2.
In the pre-fit position shown in Fig. 5, the lower snap groove 24 in the cylindrical tube 16 of the closure cap 15 engages over the encircling snap bead 23 of the outlet bung 2.
~: At the same time, the upper snap groove 27 in the upper part 8 ~: engages in the snap bead 26 around the cylindrical tube 16.
The lower end of the cylindrical tube 16 of the closure cap 15 is àlready engaged in the annular gap 14 of the outlet bung 2, while the upper end 11 of the upper part 8 of the outlet bung 2 ¦~ is already engaged in the second annular gap 20 of the closure cap 15.
In this pre-fit position, the packaging container plus :~
' S ~
: . . ~, ' . :
Z00805~
, ``.
closure may then be introduced into a filling machine where the closure cap 15 is removed, by corresponding parts of the machine, before filling of the plastic bag 5. After filling, the container is finally closed by pressing closure cap 15 into a final-fit position.
During the closing step in the final-fit position (Fig.
6), the closure cap 15 passes over the previous snap connection between the groove 24 and the bead 23, and between the groove 27 and the bead 26, by penetrating at the lower end of its cylindrical tube 16 into the annular gap 14 until the upper snap groove 25 in the cylindrical tube 16 snaps into the snap bead 23 around the outlet bung 2. At the same time, the lower snap groove 28 in the upper part 8 of the outlet bung 2 snaps into the snap bead 26 around the cylindrical tube 16 of the closure cap 15, so that a firm connection is established between both components.
;~ To guarantee a liquid-tight connection between the closure cap 15 and the outlet bung 2, the inner tube section 13 of the outlet bung 2 is provided in the region of the annular gap 14 with a conical annular surface 29, while the lower end of the cylindrical tube 16 of the closure cap 15 is provided with a corresponding conical surface 30 on the inside. In the final-fit position, the surfaces 29, 30 bear sealing against one another, although a narrow air gap 31 is left in the : ,~
annular gap 14.
From the open position shown in Fig. 6, the container can be closed by turning the closure cap 15. To this end, the closure cap 15 may be turned through about 90 along the .: , .
,, , , 9 200805~
shoulder 13 of the upper part 8 by means of the web 22.
Further turning is prevented by the stud 21 on the closure cap 15. Through the turning movement, the opening 17 in the cylindrical tube 16 is moved away from the product outlet tube 9, closing the outlet cross-section 10 via the wall surface of the cylindrical tube 16 of the closure cap 15.
To enlarge the outlet cross-section 10 of the product outlet tube 9, the outlet cross-section 10 and the opening 17 in the cylindrical tube 16 of the closure cap 15 can be made oval in shape. In order to guarantee adequate sealing in this embodiment, the outlet cross-section 10 or the opening 17 is provided with a peripheral bead 32 on the mutually opposite side, as shown in Fig. 6. An enlarged outlet opening such as this is appropriate, for example, in cases where the packaging container~is used for media of relatively high viscosity.
The invention is not meant to be confined to the examples of various embodiments shown in the drawings, and described herein for purposes of illustration. Further embodiments of the invention are possible without departing from the basic scope and spirit of the appended claims. For example, the ~; additional peripheral bead 32 may be provided for particularly free-flowing media, even where the product outlet tube 9 has a round outlet cross-section 10.
Claims (20)
1. A packaging container for accommodating a liquid product, comprising:
a flexible bag mounted in a rigid outer case with a closeable outlet bung and an opening associated therewith;
said outlet bung being adapted to be fixed to the rim of the opening by a support integrally formed on the neck of the bung, and being provided with a laterally directed product outlet tube, which branches radially sideways from an axially directed upper part of the outlet bung, its outlet having a cross-section adapted to be closed and opened by means of a cylindrical tube extending into said upper part with a corresponding opening of a closure cap rotatable relative to the outlet bung; and a fixing flange extending radially outwards being formed between said upper part and said bung neck, the tubular said upper part being integrally formed with said lateral product outlet tube on the outer edge of said fixing flange, said bung neck being extended beyond the fixing flange into the lower end of said upper part beneath said product outlet tube by means of an inner tube section, thereby forming an annular gap between said upper part and said inner tube section for sealingly receiving said inner tube of the closure cap.
a flexible bag mounted in a rigid outer case with a closeable outlet bung and an opening associated therewith;
said outlet bung being adapted to be fixed to the rim of the opening by a support integrally formed on the neck of the bung, and being provided with a laterally directed product outlet tube, which branches radially sideways from an axially directed upper part of the outlet bung, its outlet having a cross-section adapted to be closed and opened by means of a cylindrical tube extending into said upper part with a corresponding opening of a closure cap rotatable relative to the outlet bung; and a fixing flange extending radially outwards being formed between said upper part and said bung neck, the tubular said upper part being integrally formed with said lateral product outlet tube on the outer edge of said fixing flange, said bung neck being extended beyond the fixing flange into the lower end of said upper part beneath said product outlet tube by means of an inner tube section, thereby forming an annular gap between said upper part and said inner tube section for sealingly receiving said inner tube of the closure cap.
2. A packaging container as claimed in Claim 1, further including an encircling snap bead arranged in the region of said annular gap on the upper part of said outlet bung, and at least one encircling snap groove being formed at the lower end of the cylindrical tube of the closure cap.
3. A packaging container as claimed in Claim 2, further including two encircling snap grooves formed at the lower end of said cylindrical tube of said closure cap.
4. A packaging container as claimed in Claim 1, wherein said inner tube section of said outlet bung widens conically towards said fixing flange in the region of said annular gap, and the lower end of said cylindrical tube of said closure cap is beveled correspondingly conically on its inside.
5. A packaging container as claimed in Claim 1, further including said closure cap surrounding an upper end of said upper part of said outlet bung with a cylindrical outer wall for forming a second annular gap.
6. A packaging container as claimed in Claim 5, further including an encircling snap bead arranged on said cylindrical tube of said closure cap in the region of said second annular gap, and at least one inner encircling snap groove being formed at the upper end of said upper part of said outlet bung.
7. A packaging container as claimed in Claim 6, further including two inner encircling snap grooves formed at the upper end of said upper part of said outlet bung.
8. A packaging container as claimed in Claim 1, further including the outlet cross-section of said product outlet tube and said opening of the cylindrical tube of the closure cap being oval in shape, and the outlet cross-section being provided with a peripheral bead on a mutually opposite side.
9. A packaging container as claimed in Claim 2, wherein said inner tube section of said outlet bung widens conically towards said fixing flange in the region of said annular gap, and the lower end of said cylindrical tube of said closure cap is beveled correspondingly conically on its inside.
10. A packaging container as claimed in Claim 3, wherein said inner tube section of said outlet bung widens conically towards said fixing flange in the region of said annular gap, and the lower end of said cylindrical tube of said closure cap is beveled correspondingly conically on its inside.
11. A packaging container as claimed in Claim 2, further including said closure cap surrounding an upper end of said upper part of said outlet bung with a cylindrical outer wall for forming a second annular gap.
12. A packaging container as claimed in Claim 3, further including said closure cap surrounding an upper end of said upper part of said outlet bung with a cylindrical outer wall for forming a second annular gap.
13 13. A packaging container as claimed in Claim 4, further including said closure cap surrounding an upper end of said upper part of said outlet bung with a cylindrical outer wall for forming a second annular gap.
14. A packaging container as claimed in Claim 2, further including the outlet cross-section of said product outlet tube and said opening of the cylindrical tube of the closure cap being oval in shape, and the outlet cross-section being provided with a peripheral bead on a mutually opposite side.
15. A packaging container as claimed in Claim 3, further including the outlet cross-section of said product outlet tube and said opening of the cylindrical tube of the closure cap being oval in shape, and the outlet cross-section being provided with a peripheral bead on a mutually opposite side.
16. A packaging container as claimed in Claim 4, further including the outlet cross-section of said product outlet tube and said opening of the cylindrical tube of the closure cap being oval in shape, and the outlet cross-section being provided with a peripheral bead on a mutually opposite side.
17. A packaging container as claimed in Claim 5, further including the outlet cross-section of said product outlet tube and said opening of the cylindrical tube of the closure cap being oval in shape, and the outlet cross-section being provided with a peripheral bead on a mutually opposite side.
18. A packaging container as claimed in Claim 6, further including the outlet cross-section of said product outlet tube and said opening of the cylindrical tube of the closure cap being oval in shape, and the outlet cross-section being provided with a peripheral bead on a mutually opposite side.
19. A packaging container as claimed in Claim 7, further including the outlet cross-section of said product outlet tube and said opening of the cylindrical tube of the closure cap being oval in shape, and the outlet cross-section being provided with a peripheral bead on a mutually opposite side.
20. A packaging container as claimed in Claim 1, further including the outlet cross-section of said product outlet tube and opening of the cylindrical tube of the closure cap being oval in shape, and the opening of the cylindrical tube being provided with a peripheral bead on a mutually opposite side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893901282 DE3901282A1 (en) | 1989-01-18 | 1989-01-18 | PACKAGING CONTAINER WITH A FLEXIBLE SACK STORED IN A STIFF COVER WITH A LOCKABLE OUTLET |
| DEP3901282.4 | 1989-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2008051A1 true CA2008051A1 (en) | 1990-07-18 |
Family
ID=6372278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2008051 Abandoned CA2008051A1 (en) | 1989-01-18 | 1990-01-18 | Packaging container having flexible bag with closeable outlet bung in rigid outer case |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0379034A1 (en) |
| CA (1) | CA2008051A1 (en) |
| DD (1) | DD291522A5 (en) |
| DE (1) | DE3901282A1 (en) |
| ES (1) | ES1012578Y (en) |
| PT (1) | PT92882A (en) |
| WO (1) | WO1990008099A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9411864U1 (en) * | 1994-07-22 | 1995-02-02 | Fischer Manfred | Dispensing device for a beverage container |
| DE102010014480A1 (en) * | 2010-04-09 | 2012-12-27 | Hensen Consult | Pack for flowable products |
| WO2016096496A1 (en) * | 2014-12-17 | 2016-06-23 | Nestec S.A. | Rotary valve member and food dispenser comprising such valve member |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1115151B (en) * | 1959-04-24 | 1961-10-12 | Gustav Rasche Nachf | Filling tap |
| CA1126695A (en) * | 1979-09-06 | 1982-06-29 | Diemoulders Proprietary Limited | Dispensing of liquids |
| AU7609181A (en) * | 1980-10-09 | 1982-04-22 | Tobacco Research And Development Institute Limited | Tap for a composite liquid container |
| US4493438A (en) * | 1982-07-09 | 1985-01-15 | Rutter Christopher C | Fluid dispenser |
| GB8304244D0 (en) * | 1983-02-16 | 1983-03-23 | Waddington & Duval Ltd | Tap |
| GB8411719D0 (en) * | 1984-05-08 | 1984-06-13 | Moakes D P | Sleeve for dispensing valve |
-
1989
- 1989-01-18 DE DE19893901282 patent/DE3901282A1/en active Granted
-
1990
- 1990-01-09 WO PCT/EP1990/000036 patent/WO1990008099A1/en unknown
- 1990-01-09 EP EP90100348A patent/EP0379034A1/en not_active Withdrawn
- 1990-01-15 DD DD33710290A patent/DD291522A5/en not_active IP Right Cessation
- 1990-01-17 PT PT9288290A patent/PT92882A/en not_active Application Discontinuation
- 1990-01-18 CA CA 2008051 patent/CA2008051A1/en not_active Abandoned
- 1990-01-18 ES ES9000131U patent/ES1012578Y/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES1012578Y (en) | 1991-03-16 |
| WO1990008099A1 (en) | 1990-07-26 |
| DD291522A5 (en) | 1991-07-04 |
| DE3901282A1 (en) | 1990-07-19 |
| EP0379034A1 (en) | 1990-07-25 |
| DE3901282C2 (en) | 1993-01-28 |
| ES1012578U (en) | 1990-08-16 |
| PT92882A (en) | 1990-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |