EP1340695A1 - Unidirektionales Ventil für flexible Verpackungen - Google Patents
Unidirektionales Ventil für flexible Verpackungen Download PDFInfo
- Publication number
- EP1340695A1 EP1340695A1 EP02251232A EP02251232A EP1340695A1 EP 1340695 A1 EP1340695 A1 EP 1340695A1 EP 02251232 A EP02251232 A EP 02251232A EP 02251232 A EP02251232 A EP 02251232A EP 1340695 A1 EP1340695 A1 EP 1340695A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- package
- sheet
- escape
- valve
- attached
- 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.)
- Withdrawn
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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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/22—Details
- B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
-
- 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
- B65D2205/00—Venting means
Definitions
- the present invention relates to a unidirectional valve, which is especially useful for flexible sack-type packages made with flexible laminar plastic materials such as those generally used to package coffee, sugar, baked goods, dog food, powdered milk, and so forth.
- valves are already well known and are essentially valves that permit the passage of fluid in just one direction, while preventing the passage of air in the opposite direction.
- the purpose of using this type of valve is to permit gases that may be produced by a product which is already packaged to escape from the package but to prevent the outside air from entering the package, since that would surely cause the product to deteriorate.
- gases may be produced by a product which is already packaged to escape from the package but to prevent the outside air from entering the package, since that would surely cause the product to deteriorate.
- a typical example is coffee, which emits a gas, carbonic anhydride, after being roasted, and if the package is closed that gas can cause expansion and eventually burst the walls of the package, which creates obvious difficulties.
- coffee is generally packaged 48 hours after roasting, since by then it has stopped emitting gas. But this has a deleterious effect on the properties of the coffee, which will not be the same as they would have been if it could have been packaged immediately after roasting, since the aromas are lost upon exposure to the air.
- the valve proposed for the present invention allows the gas to escape until the coffee stops emitting gases and then, when the internal pressure disappears, the valve closes. In other words, the package is closed and the outside air cannot enter.
- One of the effects this achieves is that the oxygen inside the package can escape, but the oxygen outside cannot enter, so, since the oxygen in the space at the top of the package escapes, the product has a longer shelf life, inasmuch as that oxygen causes oxidation processes and deterioration of the product that affect its quality.
- valve During the life of the package, outside air or oxygen cannot enter the package, since the valve's channel does not inflate or does not open with external pressure; rather, it rises with the internal pressure when the user, for any reason, presses the package and generates pressure to force out the gas or air in said package. Thus, the valve remains closed until the internal pressure exceeds a predetermined value, for example, approximately 15 millibars, and at that point, the channel inflates and the valve opens.
- a predetermined value for example, approximately 15 millibars
- this feature is especially useful, for example, when the user wants to smell the aroma of the product contained in said package without having to open or damage said package. So, this unidirectional valve which is now proposed is also a new element for marketing the product.
- the proposed valve is also useful for packaging various baked goods and in some medical applications.
- this valve allows internal air to escape, so the packages deflate and take up less space, producing less volume, and therefore the transportation cost is lower.
- attaching it to the package is extremely simple, since it can be joined, as will be explained in detail, directly to the sheet which will constitute the walls of the package. That is, it can be attached before the package is constructed by means of two sheets that are applied as part of an operation involving perforation and joining without having to bond them to the package, so that the cost of the equipment involved in this operation is much lower.
- the proposed unidirectional valve has the aforementioned unidirectional capacity based on two very thin flat sheets.
- Another well-known achievement is based on a more or less rigid plastic part attached to a window in the package, on whose exterior is a film covering an orifice.
- the original element of the valve is that, by using very thin sheets, the external pressure acts on the outside sheet, superimposed on a window cut in the lower sheet, coinciding with perforations on the package, and results in the closing of the valve, since a small external overpressure is sufficient to close it, and a small internal overpressure is sufficient to open it and let gas escape from the package.
- the proposed solution will offer significant improvement vis-à-vis the problems associated with the prior art connected with unidirectional valves.
- the fundamental principle on which the proposed valve is based is the extreme thinness of the sheets that are joined together by the aforementioned external overpressure. This is why the unidirectional valve of the present invention solves the aforementioned problems: the very thin sheets produce a very sure unidirectionality, avoiding failures, and are basically presented on a roll with three laminated materials superimposed on each other.
- a first base laminar material or siliconed liner is a material that only transports the valve to the packager, protecting the adhesive-treated face, which is then removed and discarded after the operation.
- the two remaining materials are those that ultimately go into the package, whether it is flexible or rigid, one of them making up a lower layer which is attached, with an adhesive, to the walls of the package; this lower piece has a window through which the gas inside will escape, and on top of it, the other layer, which makes up an upper layer, is attached.
- the proposed unidirectional valve marked as general reference 1 includes a laminar material that makes up the wall of the package, shown in the figures as reference 2, and of which only a part is illustrated, but it is understood that this material extends to the entire package.
- the laminar material of which it is made is perforated, defining the orifices marked as reference 5.
- Figures 2A and 2B show that said orifices are made as segmented portions, but in reality they can also have another configuration and be, for example, a single circular or rectangular orifice as convenient and in accordance with the product manufacturer's work method.
- the valve per se is constructed of two sheets marked as references 3 and 4, the first of which is affixed to the laminar material 2 with which the package is made, while the latter sheet 4 is in turn affixed to sheet 3.
- Said sheet 3 contains a window 6 which fully covers the orifices 5, made in the laminar material 2 of the package, while sheet 4 covers said opening. Since sheet 3 and sheet 4 are very thin, for example, although that should not be interpreted restrictively for implementation of the proposed valve, while the material of which the package wall is made can be a laminar material approximately 100 microns thick, the first sheet 3 attached to this layer 2 is approximately 30 microns thick while the second and last sheet, 4, is 50 microns thick.
- the valve opens when the user generates internal pressure from the gas contained in the package, for example, by pressing on said package, to smell the aroma of the product. So, when said internal pressure exceeds a certain value, the gas will flow out through the orifices 5, via the valve's channel.
- the proposed valve can be placed during the process of manufacturing the laminar material with which the package is made.
- these laminar materials are produced in very long rolls which are placed on the packaging machines, which are the machines that fold said laminar material to construct the package, at the same time various bonds are produced, thus shaping the package 4, then measuring out the product to be packaged.
- the valve can be placed directly on the laminar material on the roll so it enters the packaging machine with the valve in place.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02251232A EP1340695A1 (de) | 2002-02-22 | 2002-02-22 | Unidirektionales Ventil für flexible Verpackungen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02251232A EP1340695A1 (de) | 2002-02-22 | 2002-02-22 | Unidirektionales Ventil für flexible Verpackungen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1340695A1 true EP1340695A1 (de) | 2003-09-03 |
Family
ID=27675747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02251232A Withdrawn EP1340695A1 (de) | 2002-02-22 | 2002-02-22 | Unidirektionales Ventil für flexible Verpackungen |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1340695A1 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004045970A1 (en) * | 2002-11-18 | 2004-06-03 | C.H. Food B.V. | Food package and method for heating a food package |
EP1630769A1 (de) * | 2004-08-23 | 2006-03-01 | Schreiner Group GmbH & Co. KG | Etikett zum Abdecken von Gasaustauschöffnungen |
EP1882637A1 (de) * | 2006-07-28 | 2008-01-30 | Q-bag packaging machinery GmbH & Co. KG | Verpackungsbehälter |
WO2009142987A1 (en) * | 2008-05-21 | 2009-11-26 | Sonoco Development, Inc. | Molded container with degassing valve |
WO2016205649A1 (en) * | 2015-06-18 | 2016-12-22 | Ccl Label, Inc. | Pre-oiled valve |
US10783805B2 (en) | 2018-01-15 | 2020-09-22 | LaserSharp FlexPak Services, LLC | Microchannel device for controlling gas, vapor, pressure within a package |
US10781023B2 (en) | 2018-01-15 | 2020-09-22 | LaserSharp FlexPak Services, LLC | Device for controlling gas, vapor, pressure within a package |
WO2020200423A1 (en) | 2019-04-02 | 2020-10-08 | Anderling Bv | Bowl for heating food |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5263777A (en) * | 1991-02-16 | 1993-11-23 | Robert Bosch Gmbh | Overpressure valve for packaging containers |
DE4435492A1 (de) * | 1994-10-04 | 1996-04-11 | Bosch Gmbh Robert | Überdruckventil für einen Verpackungsbehälter |
-
2002
- 2002-02-22 EP EP02251232A patent/EP1340695A1/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5263777A (en) * | 1991-02-16 | 1993-11-23 | Robert Bosch Gmbh | Overpressure valve for packaging containers |
DE4435492A1 (de) * | 1994-10-04 | 1996-04-11 | Bosch Gmbh Robert | Überdruckventil für einen Verpackungsbehälter |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004045970A1 (en) * | 2002-11-18 | 2004-06-03 | C.H. Food B.V. | Food package and method for heating a food package |
EP1630769A1 (de) * | 2004-08-23 | 2006-03-01 | Schreiner Group GmbH & Co. KG | Etikett zum Abdecken von Gasaustauschöffnungen |
US7687135B2 (en) | 2004-08-23 | 2010-03-30 | Schreiner Group Gmbh & Co., Kg | Label for covering gas exchange openings |
EP1882637A1 (de) * | 2006-07-28 | 2008-01-30 | Q-bag packaging machinery GmbH & Co. KG | Verpackungsbehälter |
WO2009142987A1 (en) * | 2008-05-21 | 2009-11-26 | Sonoco Development, Inc. | Molded container with degassing valve |
US8038023B2 (en) | 2008-05-21 | 2011-10-18 | Sonoco Development, Inc. | Molded container with degassing valve |
WO2016205649A1 (en) * | 2015-06-18 | 2016-12-22 | Ccl Label, Inc. | Pre-oiled valve |
US10783805B2 (en) | 2018-01-15 | 2020-09-22 | LaserSharp FlexPak Services, LLC | Microchannel device for controlling gas, vapor, pressure within a package |
US10781023B2 (en) | 2018-01-15 | 2020-09-22 | LaserSharp FlexPak Services, LLC | Device for controlling gas, vapor, pressure within a package |
WO2020200423A1 (en) | 2019-04-02 | 2020-10-08 | Anderling Bv | Bowl for heating food |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20021219 |
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AX | Request for extension of the european patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20030923 |