US20100008602A1 - Flexible Liquid Container - Google Patents
Flexible Liquid Container Download PDFInfo
- Publication number
- US20100008602A1 US20100008602A1 US12/553,711 US55371109A US2010008602A1 US 20100008602 A1 US20100008602 A1 US 20100008602A1 US 55371109 A US55371109 A US 55371109A US 2010008602 A1 US2010008602 A1 US 2010008602A1
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- US
- United States
- Prior art keywords
- spout
- container
- walls
- obstacle
- container according
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 238000009459 flexible packaging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/30—Deformable or resilient metal or like strips or bands
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5861—Spouts
- B65D75/5866—Integral spouts
-
- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/14—Valve bags, i.e. with valves for filling
-
- 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5816—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion
- B65D75/5822—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion and defining, after tearing, a small dispensing spout, a small orifice or the like
-
- 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
- B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
- B65D2575/52—Details
- B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S383/00—Flexible bags
- Y10S383/906—Dispensing feature
Definitions
- the present invention relates to a flexible container for a liquid, provided with a self-sealing pouring spout.
- Flexible containers for holding a beverage or some other liquid offer several advantages over rigid containers and, more particularly: their low cost of manufacture, the use of a minimal amount of material and a small bulk after use.
- rigid containers once opened and if no rigid pouring spout is provided, either separate or welded/bonded to the flexible sheets of the container, they cannot be easily closed once opened and they tend to allow the liquid to escape.
- the user Once the container is opened, the user must hold the container to prevent the liquid from being involuntarily spilled and he cannot leave it to stand on a table or on some other surface, unless it is completely empty.
- the self-sealing effect depends mainly on the elasticity characteristics of the material of which the container is made, on the dimensions of the spout as well as on the characteristics of the liquid.
- the self-sealing effect is strongly dependant upon the dimensions of the passage as well as on the characteristics of the liquid and in particular on its surface tension.
- the self-sealing effect is strongly dependant on the characteristics of the liquid and/or on the properties of the material of the flexible container and a given spout geometry can often be used only for a specific liquid, owing to the fact that the self-sealing effect is affected by variations in the dimensions of the channel or of the restriction.
- Another important disadvantage of these systems is that, in order to achieve a reliable self-sealing effect, it is necessary to have a high resistance in the outflow channel which limits strongly the flow rate and necessitates that a considerable compressive force be applied by the user to empty the container. Furthermore, after a first use of the container, the self-sealing effect tends to subside, which results in involuntary leaks.
- an objective of the invention is to provide a flexible container for a liquid, with a self-sealing spout, which is improved by comparison with those already known.
- the self-sealing effect depends only little on the properties of the liquid held in the container, it is reliable and it allows an outflow without requiring an excessive pressure by the user.
- the pouring spout of the container has a form, which is simple and easily manufactured, using a minimal amount of material and at a minimal cost.
- a flexible container which has the characteristic features set out in claim 1 .
- Specific embodiments are described in the dependant claims.
- FIG. 1 is a top view of the container according to the invention.
- FIG. 2 is a front view of the container of the previous figure placed on a flat surface
- FIG. 3 is a side view of the same container placed on a flat surface
- FIG. 4 is a top view of a container according to a second embodiment of the invention.
- FIG. 5 is a perspective view of the second embodiment.
- FIG. 6 is a top view of a container according to another embodiment of the invention.
- FIG. 7 is a perspective view of the container according to FIG. 6 .
- the container 1 illustrated in the figures is made from two sheets 10 , 11 of a flexible material, which have the same shape and the same dimensions, and which are fixed together by a weld seam or an adhesive seam 12 running along the periphery of the container 1 .
- the assemblage seam provided as a weld seam 12 also surrounds a spout 13 , protruding from a portion of the periphery of the container.
- the spout 13 is made from the same sheets of flexible material as those forming the container 1 and it includes an outflow channel 130 opening inside the flexible container 1 .
- the spout 13 can include a weakening groove 131 , which makes it possible to tear off a portion thereof, thus opening the spout 13 and the channel 130 .
- the two flexible sheets 10 and 11 are welded or bonded together in such a manner as to form an obstacle 14 located facing the outflow channel.
- the welded obstacle 14 has an elongated shape and extends between two ends 15 which overlap the peripheral weld 12 on both sides of the outflow channel, while leaving free two passages 140 , 141 in the direction of the channel 130 .
- the length L of the overlap is relatively small, compared with the overall length of the peripheral weld 12 and it corresponds, preferably, to less than 10% thereof.
- the longitudinal obstacle runs substantially parallel to the portions of the peripheral weld 12 on the two sides of the outflow channel and approximately perpendicularly to the general direction of the protruding spout.
- the large central parts of the two walls 10 and 11 forming the container 1 move away from each other as the container swells, as can be seen in FIGS. 2 and 3 .
- the folds 142 , 143 as well as the generally elongated obstacle 15 , define along approximately the dotted nip line 144 , shown in FIG. 1 , with the section 12 a of the seam extending between the fold lines 142 , 143 a portion of the surface, which tends to curve (deflect) as illustrated in FIGS. 2 and 3 .
- the deflection of the area 145 including the spout, between the folds 142 , 143 results in the two flexible sheets in this area being urged against each other and thus forming a valve which prevents the flow of liquid through the passages 140 , 141 and via the orifice of the protruding spout 130 .
- the deflection of the area 145 is non symmetrical, since the area 145 is deflected on one side or on the other side of the container.
- the deflection is a consequence of the particular geometry of the obstacle 15 which is either welded or bonded, and of its position with respect to the protruding spout portion 130 and the seam portion 12 a , which, together, determine the formation of the folds 142 , 143 .
- the folds 142 and 143 as well as the obstacle 15 , define a nip line 144 between the two flexible sheets. This line is not straight, but has a generally curved shape of which the ends cut across the peripheral seam. This nip line about the protruding spout, which is not straight, makes it possible to cause the deflection of the spout area 145 .
- the user In order to enable the liquid to flow via the spout 13 , the user simply needs to exert a certain pressure on the container, in particular by pressing the container at least partly along a direction F h , which is substantially perpendicular to the plane of the weld of the obstacle 14 , thus opening the lips closing the narrowed passage or passages 140 , 141 .
- the interruption of this compressive action closes the narrowed passages and closes the container.
- FIGS. 6 and 7 show a container according to the invention wherein the walls 10 ′, 11 ′ of the container are made from a single sheet of flexible material which is folded (along 12 ′) to form two overlying walls 10 ′, 11 ′.
- a given flexible packaging can contain any type of liquid, the only limitation being the chemical compatibility of the liquid with the material forming the container.
- the figures show a container 1 having a substantially circular shape; it is however understood, that this container can assume any shape adapted to its use.
- the container can be formed from a single sheet of a flexible material folded over along this straight edge, with the remaining edges being welded together to form the container.
- the embodiment of the flexible container illustrated and described has an obstacle 14 defining two narrowed passages 140 and 141 .
- the container has a shape, which is substantially rectangular, and the spout 13 is positioned in a corner of the rectangle to protrude in a direction along an oblique axis approximately along the median line between the edges of the adjoining rectangle.
- a welded obstacle 14 ′ is arranged facing the spout as in the previous embodiments, except that this obstacle is provided with a central passage 146 .
- the deflection of the spout area 145 defined by the nip line 144 is substantially the same as in the case of the embodiment described previously.
- the central passage 146 provided in the welded obstacle makes it possible to initiate and facilitate the flow of liquid in the passage of the spout.
Abstract
A flexible container for holding a liquid includes two walls made of a flexible material, the free overlaying edges of the walls being assembled together by a weld or an adhesive seam so as to define an inner sealed volume of the container. The two walls also define a spout designed to protrude outwards from a peripheral portion of the container, and an outflow channel connects the spout with the inner volume of the container. One or several obstacles are formed by welding or bonding together the two walls in the inner volume, substantially opposite from and in the vicinity of, the channel leading to the spout in such a manner as to limit the section of the passage available for the liquid between the inner volume and the outflow channel. One narrowed passage is left open in such a manner that a portion of the surface including the spout is deflected. This portion of the surface is substantially defined by the obstacle(s) and by folds directed substantially transverse with respect to the obstacles.
Description
- The present application claims the benefit of U.S. Utility Application Ser. No. 10/551,618, filed Sep. 30, 2005 entitled “FLEXIBLE LIQUID CONTAINER”, now U.S. Ser. No. 12/883,771; which in turn claims priority from PCT Application Number PCT/IB04/00736; which claims priority from Swiss National Applications 0564/03 filed Apr. 1, 2003 and 0214703 filed Dec. 16, 2003; the disclosures of which are expressly incorporated by reference herein.
- The present invention relates to a flexible container for a liquid, provided with a self-sealing pouring spout.
- Flexible containers for holding a beverage or some other liquid offer several advantages over rigid containers and, more particularly: their low cost of manufacture, the use of a minimal amount of material and a small bulk after use. However, once opened and if no rigid pouring spout is provided, either separate or welded/bonded to the flexible sheets of the container, they cannot be easily closed once opened and they tend to allow the liquid to escape. Once the container is opened, the user must hold the container to prevent the liquid from being involuntarily spilled and he cannot leave it to stand on a table or on some other surface, unless it is completely empty.
- Various flexible containers with a self-sealing spout have been suggested for overcoming this problem. Generally, either an increase in the resistance to the flow of the liquid is suggested by providing the containers with long thin channels in fluid communication with the spout developing a high resistance to flow, as described in the GB patent 769 810 and the U.S. Pat. No. 4,988,016, or a narrowing or some other obstacle in the vicinity of the spout developing a strong resistance to the flow of the liquid, such as described in the U.S. Pat. No. 5,411,178.
- In the U.S. Pat. No. 4,988,016 and in the GB patent 769 810, the self-sealing effect depends mainly on the elasticity characteristics of the material of which the container is made, on the dimensions of the spout as well as on the characteristics of the liquid. In those systems which rely on a strong local resistance, such as those described in the U.S. Pat. No. 5,411,178, the self-sealing effect is strongly dependant upon the dimensions of the passage as well as on the characteristics of the liquid and in particular on its surface tension. In all the prior solutions, the self-sealing effect is strongly dependant on the characteristics of the liquid and/or on the properties of the material of the flexible container and a given spout geometry can often be used only for a specific liquid, owing to the fact that the self-sealing effect is affected by variations in the dimensions of the channel or of the restriction. Another important disadvantage of these systems is that, in order to achieve a reliable self-sealing effect, it is necessary to have a high resistance in the outflow channel which limits strongly the flow rate and necessitates that a considerable compressive force be applied by the user to empty the container. Furthermore, after a first use of the container, the self-sealing effect tends to subside, which results in involuntary leaks.
- The same holds true for the container described in the patent application WO 98/01361 which discloses the use of spouts which are shaped differently depending on the liquid held in the container.
- Other known sealing means rely on the formation of folds after use by the user, such as described in the U.S. Pat. Nos. 3,278,085, 5,228,782 and 6,244,468. These solutions have the drawback of not providing a self-sealing effect and of requiring an intervention by the user.
- Accordingly, an objective of the invention is to provide a flexible container for a liquid, with a self-sealing spout, which is improved by comparison with those already known.
- Preferably, the self-sealing effect depends only little on the properties of the liquid held in the container, it is reliable and it allows an outflow without requiring an excessive pressure by the user.
- Preferably, the pouring spout of the container has a form, which is simple and easily manufactured, using a minimal amount of material and at a minimal cost.
- In order to achieve the objectives of the invention, a flexible container is provided, which has the characteristic features set out in claim 1. Specific embodiments are described in the dependant claims.
- A specific embodiment is described hereafter, with reference to the appended drawing, including figures, in which:
-
FIG. 1 is a top view of the container according to the invention; -
FIG. 2 is a front view of the container of the previous figure placed on a flat surface; -
FIG. 3 is a side view of the same container placed on a flat surface; -
FIG. 4 is a top view of a container according to a second embodiment of the invention; and -
FIG. 5 is a perspective view of the second embodiment. -
FIG. 6 is a top view of a container according to another embodiment of the invention; and -
FIG. 7 is a perspective view of the container according toFIG. 6 . - The container 1 illustrated in the figures is made from two
sheets adhesive seam 12 running along the periphery of the container 1. In addition to running along the periphery of the container proper, the assemblage seam provided as aweld seam 12 also surrounds aspout 13, protruding from a portion of the periphery of the container. Thus, thespout 13 is made from the same sheets of flexible material as those forming the container 1 and it includes anoutflow channel 130 opening inside the flexible container 1. Furthermore, thespout 13 can include aweakening groove 131, which makes it possible to tear off a portion thereof, thus opening thespout 13 and thechannel 130. - Inside the flexible container 1, in the vicinity of the location where the
channel 130 opens inside the flexible container, the twoflexible sheets obstacle 14 located facing the outflow channel. Thewelded obstacle 14 has an elongated shape and extends between twoends 15 which overlap theperipheral weld 12 on both sides of the outflow channel, while leaving free twopassages channel 130. The length L of the overlap is relatively small, compared with the overall length of theperipheral weld 12 and it corresponds, preferably, to less than 10% thereof. Preferably, the longitudinal obstacle runs substantially parallel to the portions of theperipheral weld 12 on the two sides of the outflow channel and approximately perpendicularly to the general direction of the protruding spout. - When the container 1 is filled via a filling spout (not illustrated) and sealed permanently after the filling, the large central parts of the two
walls FIGS. 2 and 3 . - When the container 1 is filled and the
walls walls narrowed passages axes FIG. 1 . The deformation of thewalls obstacle 14—namely of two portions of eachwall narrowed passages axes - The
folds elongated obstacle 15, define along approximately thedotted nip line 144, shown inFIG. 1 , with thesection 12 a of the seam extending between thefold lines 142, 143 a portion of the surface, which tends to curve (deflect) as illustrated inFIGS. 2 and 3 . The deflection of thearea 145 including the spout, between thefolds passages spout 130. - When the flexible container is laid on a flat surface as illustrated in
FIGS. 2 and 3 and a vertical force Fv is applied approximately on the large central part of theupper wall 10, thefolds central deflection area 145 tend to reinforce, thus increasing the tightness of the valve. - This reinforcement of the
folds passages area 143 which increases with the application of a force Fv which is substantially perpendicular to the plane of the flexible sheets are extremely advantageous, since they prevent effectively the escape of liquid when the flexible container is laid in its natural position on a surface which is substantially flat, even when another object, which increases the pressure in the container, is placed on top of the container. - It is to be noted, that the deflection of the
area 145 is non symmetrical, since thearea 145 is deflected on one side or on the other side of the container. The deflection is a consequence of the particular geometry of theobstacle 15 which is either welded or bonded, and of its position with respect to the protrudingspout portion 130 and theseam portion 12 a, which, together, determine the formation of thefolds folds obstacle 15, define anip line 144 between the two flexible sheets. This line is not straight, but has a generally curved shape of which the ends cut across the peripheral seam. This nip line about the protruding spout, which is not straight, makes it possible to cause the deflection of thespout area 145. - In order to enable the liquid to flow via the
spout 13, the user simply needs to exert a certain pressure on the container, in particular by pressing the container at least partly along a direction Fh, which is substantially perpendicular to the plane of the weld of theobstacle 14, thus opening the lips closing the narrowed passage orpassages - The exertion of a compressive force on the container in the direction FH, i. e. substantially perpendicularly to the plane of the weld of the obstacle results in a decrease of the deflection and of the effect of the
folds passages lateral sections 12 b of the seam, which is accompanied by an increase of the pressure inside the container, a pulling force FT and a torque FR act on the portion of the seam in the vicinity of the spout which tends to flatten, i. e. to reduce the deflection of thespout area 145. - The figures show a container 1 having a substantially circular shape; it is however understood, that this container can assume any shape adapted to its use. In the case of a container of a design having one side with a straight edge, the container can be formed from a single sheet of a flexible material folded over along this straight edge, with the remaining edges being welded together to form the container. For example, and as shown in
FIGS. 6 and 7 , a container according to the invention is shown wherein thewalls 10′, 11′ of the container are made from a single sheet of flexible material which is folded (along 12′) to form twooverlying walls 10′, 11′. - Also, a given flexible packaging can contain any type of liquid, the only limitation being the chemical compatibility of the liquid with the material forming the container.
- The figures show a container 1 having a substantially circular shape; it is however understood, that this container can assume any shape adapted to its use. In the case of a container of a design having one side with a straight edge, the container can be formed from a single sheet of a flexible material folded over along this straight edge, with the remaining edges being welded together to form the container.
- Furthermore, the embodiment of the flexible container illustrated and described has an
obstacle 14 defining two narrowedpassages obstacle 14 in contact with the neighbouring portion of theweld 12, thus leaving only one narrowed passage, with a single fold being then formed on thewalls - In another embodiment, such as that illustrated in
FIGS. 4 and 5 , the container has a shape, which is substantially rectangular, and thespout 13 is positioned in a corner of the rectangle to protrude in a direction along an oblique axis approximately along the median line between the edges of the adjoining rectangle. In this embodiment, a weldedobstacle 14′ is arranged facing the spout as in the previous embodiments, except that this obstacle is provided with acentral passage 146. In this embodiment, the deflection of thespout area 145 defined by thenip line 144 is substantially the same as in the case of the embodiment described previously. However, because of the rectangular shape of the container and of the position of the spout in a corner thereof, a compressive force applied by the user to the central part ofopposite edges 12 b of the container creates a pulling force and a torque which are less pronounced on thespout area 145 by comparison with the embodiment described previously. However, owing to the rectangular shape of the container and of the position of the spout in one corner thereof, a compressive force exerted by the user upon the central part of theopposite edges 12 b of the container generates a pulling force and a torque which are less pronounced on thespout area 145 than in the embodiment described previously. - In the case of such elongated shapes in which the compressive force is exerted on the container at a relatively long distance from the spout and where the spout is in a non symmetrical position of the container with respect to the compressive forces applied to the container, the
central passage 146 provided in the welded obstacle makes it possible to initiate and facilitate the flow of liquid in the passage of the spout.
Claims (10)
1. A flexible container for containing a liquid, including two overlaying walls of flexible material welded or bonded along a peripheral seam so as to define an inner sealed volume, said container comprising an outwardly protruding spout and an outflow channel connecting said spout with said inner sealed volume of said container, wherein one or several obstacles formed by welding or bonding together a portion of said two overlaying walls is or are located in said inner sealed volume substantially opposite and in the vicinity of the outflow channel thereby leaving open at least one restricted passage between the inner sealed volume and the outflow channel, the obstacle or obstacles extending between two ends and creating two folds, one extending from each of said ends, directed substantially transversally with respect to said obstacles and traversing the peripheral seam, the position of the one or several obstacles relative to the spout and the peripheral seam being such that a portion of the overlying walls including the spout and bounded by the obstacle or the obstacles and by the folds deflects or arches when liquid is present in the inner sealed volume.
2. A flexible container according to claim 1 , wherein the obstacle defines two said restricted passages at two opposite sides of the outflow channel of the spout.
3. A flexible container according to claim 1 , wherein the spout has a generally straight shape and extends substantially perpendicularly to a peripheral portion of the container to which it is affixed.
4. A flexible container according to claim 1 , wherein the spout includes a groove for tearing off a portion of the spout.
5. A flexible container according to claim 1 , wherein the walls of the container are made from a single sheet of flexible material, which is folded over to overlay said two walls.
6. A flexible container according to claim 1 , wherein the walls of the container are made from two separate sheets of flexible material.
7. A flexible container according to claim 1 , wherein the obstacle has an elongated shape and extends between two ends overlapping the peripheral seam on either side of the spout.
8. A flexible container according to claim 7 , wherein the obstacle overlaps said peripheral seam on either side of the spout by an amount that is less than 5% of the overall length of the peripheral seam.
9. A flexible container according to claim 1 , wherein the obstacle extends substantially parallel to portions of the peripheral seam located on either side of the spout.
10. A flexible container according to claim 1 , comprising at least two said obstacles spaced apart by a narrow passage facing the outflow channel of the spout.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/553,711 US20100008602A1 (en) | 2003-01-04 | 2009-09-03 | Flexible Liquid Container |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
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CH5642003 | 2003-04-01 | ||
CHCH0564/03 | 2003-04-01 | ||
CH20032147/03 | 2003-12-16 | ||
CH02147/03A CH696968A5 (en) | 2003-04-01 | 2003-12-16 | The flexible liquid container. |
PCT/IB2004/000736 WO2004087526A1 (en) | 2003-04-01 | 2004-03-12 | Flexible liquid container |
US10/551,618 US7658542B2 (en) | 2003-04-01 | 2004-03-12 | Flexible liquid container |
US12/553,711 US20100008602A1 (en) | 2003-01-04 | 2009-09-03 | Flexible Liquid Container |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/551,618 Continuation US7658542B2 (en) | 2003-01-04 | 2004-03-12 | Flexible liquid container |
PCT/IB2004/000736 Continuation WO2004087526A1 (en) | 2003-01-04 | 2004-03-12 | Flexible liquid container |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100008602A1 true US20100008602A1 (en) | 2010-01-14 |
Family
ID=33132415
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US10/551,618 Active 2027-03-21 US7658542B2 (en) | 2003-01-04 | 2004-03-12 | Flexible liquid container |
US12/553,711 Abandoned US20100008602A1 (en) | 2003-01-04 | 2009-09-03 | Flexible Liquid Container |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/551,618 Active 2027-03-21 US7658542B2 (en) | 2003-01-04 | 2004-03-12 | Flexible liquid container |
Country Status (27)
Country | Link |
---|---|
US (2) | US7658542B2 (en) |
EP (1) | EP1615843B1 (en) |
JP (2) | JP4754477B2 (en) |
KR (1) | KR20050116837A (en) |
CN (1) | CN100398410C (en) |
AP (1) | AP1937A (en) |
AR (1) | AR043816A1 (en) |
AT (1) | ATE460355T1 (en) |
BR (1) | BRPI0408985B1 (en) |
CA (1) | CA2520841C (en) |
CH (1) | CH696968A5 (en) |
CL (1) | CL2004000689A1 (en) |
CO (1) | CO5611190A2 (en) |
DE (1) | DE602004025915D1 (en) |
EA (1) | EA007291B1 (en) |
EG (1) | EG23849A (en) |
ES (1) | ES2342886T3 (en) |
HK (1) | HK1089736A1 (en) |
MA (1) | MA27672A1 (en) |
MX (1) | MXPA05010472A (en) |
NO (1) | NO331479B1 (en) |
OA (1) | OA13044A (en) |
PL (1) | PL1615843T3 (en) |
TN (1) | TNSN05235A1 (en) |
UA (1) | UA80189C2 (en) |
WO (1) | WO2004087526A1 (en) |
ZA (1) | ZA200508832B (en) |
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