EP1485303A1 - Single-use one-way valve for food package that emits sound signal at sufficient heating - Google Patents

Single-use one-way valve for food package that emits sound signal at sufficient heating

Info

Publication number
EP1485303A1
EP1485303A1 EP03713126A EP03713126A EP1485303A1 EP 1485303 A1 EP1485303 A1 EP 1485303A1 EP 03713126 A EP03713126 A EP 03713126A EP 03713126 A EP03713126 A EP 03713126A EP 1485303 A1 EP1485303 A1 EP 1485303A1
Authority
EP
European Patent Office
Prior art keywords
valve
package
sound signal
adhesive layer
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03713126A
Other languages
German (de)
French (fr)
Other versions
EP1485303B1 (en
Inventor
Joel Haamer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Micvac AB
Original Assignee
Micvac AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Micvac AB filed Critical Micvac AB
Publication of EP1485303A1 publication Critical patent/EP1485303A1/en
Application granted granted Critical
Publication of EP1485303B1 publication Critical patent/EP1485303B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1644—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element the element being a valve
    • B65D51/165—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element the element being a valve formed by a slit or narrow opening
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/34—Cleaning or preventing clogging of the discharge passage

Definitions

  • the present invention relates to a single-use valve intended to be mounted on a package, particularly food 5 packages the contents of which are to be heated in a microwave oven, said valve arranged to open in response to an excess pressure generated inside the package upon heating of the latter.
  • the food product In food packages, for example of the kind that contain heat-and-eat one-portion dishes and that are sold in refrigeration and freezing compartments, respectively, to be heated or cooked to ready-to-eat state in a microwave 5 oven, the food product usually is placed in a heat-resistant tray covered by plastic film. When the package is to be heated, the plastic film is either removed or apertures are pierced therein and the entire tray is then placed inside the microwave oven. Because of the varying 0 performance of different types of microwave ovens and because the food product absorbs microwave energy differently, depending on the composition and the temperature of the food product, heating times vary considerably. Consequently, it is difficult to give recommendations to 5 the consumer as to the exact heating times required to reach the ready-to-eat state.
  • the consumer therefore might have to open and reopen the microwave door several times to convince himself that the dish is completely hot or completely cooked.
  • Over-heating of the food is not either recommendable, since in this case the tray or the plastic film still po- sitioned thereon may melt locally and ruin the food, or since overheating makes the food soggy, over-cooked and unpalatable.
  • the consumer therefore should remain beside the microwave oven during the heating in order to check when the food product has reached the ready state .
  • the object of the present invention therefore is to remove this problem.
  • This object is achieved by means of a valve of the kind defined in the introduction, possessing the characteristic features defined in claim 1.
  • Preferred embodiments of the valve appear from the claims depending on claim 1.
  • the present invention relates to a single-use valve, which is intended for mounting on a package, particularly on food packages, the contents of which are to be heated in a microwave oven.
  • the valve is arranged to open in response to an excess pressure generated in said package as the latter is being exposed to heat.
  • the inventive valve is arranged to emit a sound signal when subjected to said pressure load.
  • the valve is arranged on a package intended to hold food products that are to be cooked/heated by the con- sumer until they reach a ready-to-eat state.
  • This kind of package is commonly used for example as single-portion packages holding lunch or dinner dishes.
  • the valve does not open until a predetermined water-vapor pressure is reached inside the package. Inside the package, equaliza- tion of temperature takes place as hot water-vapor condenses on cold areas of the product (the cold-wall principle) . Not until the entire product has reached about 100°C on the surface is it possible for an excess pressure of vapor to generate inside the package.
  • the magni- tude of the valve-opening pressure could be determined on the basis of the resiliency of the valve material, the size of the valve opening or the melting point of the ad- hesive.
  • the valve emits a sound signal as water vapor flows through the valve.
  • the sound signal indicates to the user that the food product has reached the ready state. In this manner is achieved not only the even heat- ing results aimed for to ensure that some zones of the food product do not remain cold but also the user is given an audible indication that the dish is ready.
  • the user need not open the microwave-oven door to ascertain the condition of the dish but could attend to other mat- ters in the meantime.
  • the valve is an indication of fracture, a slit or an aperture across which an adhesive layer is disposed.
  • the adhesive layer is arranged in a manner ensuring that it is forced to move, when a flow of air and vapor exits through the valve, in response to which a sound signal is generated.
  • the valve preferably is configured as a slit formed in the package, on top of which slit an adhesive layer is placed. At least one part of the adhesive layer is formed with an adhesive of a kind that is suitable for use together with foodstuff, since the invention is primarily intended for food packages .
  • the adhesive layer is a tape, preferably of a resilient kind to allow it to adapt itself to the movements of the package material during handling and not disengage itself from the support.
  • the adhesive layer could likewise be a label, thus minimizing the consumption of material as well as the amount of labor required to mark the product in outlet stores .
  • the packaging material on which the valve is provided consists of a non-directional laminate.
  • a slit would cause a rent to develop in the material.
  • Fig 1 is an overall view of a package having a valve in accordance with the present invention.
  • Fig 2 is a cross-sectional view showing two differ- ent stages of the process of heating a package having a valve in accordance with the present invention.
  • Fig 2a shows the package in a cold state and
  • Fig 2b the package in a heated state.
  • Fig 3 is a perspective view, showing a microwave oven.
  • the food package 2 of Fig 1 consists of a tray 7 holding a food product 8.
  • a packaging material 6 in the form of a non-directional laminate is positioned on top of the tray 7 in order to protect the food product 8 from external manipulation during the production and distribution stages.
  • the tray 7 as well as the laminate 6 consist of heat-resistant materials, since their intended func- tion is to enclose food that is to be heated.
  • the laminate 6 is welded to the tray 7 to produce a strong and impermeable seam.
  • the valve 1 in accordance with the present invention is formed in the non-directional laminate 6.
  • the valve 1 is an opening 4 passing through the lami- nate.
  • a resilient tape 5 the adhesive of which is suitable for use together with foodstuff is placed on top of the opening 4.
  • the location of tape 5 is chosen such that the distance between the opening 4 and the longitudinal edges of the tape 5 in conjunction with the strength of the adhesive of the tape 5 ensures that an excess water- vapor pressure generated inside the package 2 as the food product contained therein is being heated, is powerful enough to force water vapor out through the opening 4 while passing between the tape 5 and the laminate and in doing so generate a sound signal owing to the vibration of the tape.
  • a slit may be formed in the adhesive layer/tape 5 to prevent the longitudinal edge thereof to open up in an uncontrolled manner.
  • Fig 2a shows the same food package 2 as Fig 1.
  • the food product 8 is positioned- in the tray 7, which is cov- , ered by the laminate 6.
  • the valve 1, in the form of opening 4 and tape 5, is provided in the laminate 6.
  • This drawing figure shows the food product 8 in the condition in which it is sold to the consumer, i.e. deep-frozen, refrigerated or stored in some other way.
  • Fig 2b shows the food package 2 while being exposed to microwaves for heating purposes and in the state when the food product 8 is sufficiently warm for the water vapor to create an excess pressure inside the package 2 that is powerful enough to open the valve 1 and generate a sound signal.
  • Fig 3 finally shows a microwave oven 3, in which the food package 2 may be positioned for heating of the food product 8.
  • the food package 2 could be formed entirely of a plastic film or some other material suitable for storage of food 8.
  • some part of the package 2 should consist of a type of non-directional laminate 6 that is suitable to form the valve 1 in accordance with the invention.
  • the food package 2 could hold for example refrigerated or deep-frozen products.
  • the size and shape of the tape 5 or label are not restricted to the shown embodiment.
  • the function of the valve 1 remains the same also if an indication of fracture is impressed into the non-di- rectional laminate 6 or an etching is made therein in such a manner that the laminate 6 still is in one piece with no through-passage opening formed in the material .
  • the indication of fracture means that the packaging mate- rial 6 offers perfectly satisfactory protection to the contents inside the package 2 without having any contact with the adhesive layer up to the point, when the package 2 is heated. In the heating process, water vapor forms in the usual manner, and upon a predetermined excess pres- sure inside the package 2 it breaks the indication of fracture, whereby an opening 4 is formed, and vapor is forced outwards and together with the adhesive layer it generates the sound signal .
  • the strength of the package material 6 itself is sufficient to prevent the material from bursting should an indication of fracture not have been provided. If for some reason the material should burst anyway, no sound signal would be emitted, since in all likelihood an uncontrolled rift in the material would be of a configuration that cannot produce a sound.
  • a sound-emitting element of a flute-like type on top of the opening 4 in the package 2. This sound-emitting element likewise would serve to indicate when the food product 8 inside the package 2 is heated to the ready. It is likewise pos- sible to give the slit in the package another shape than a straight one, for instance a V-shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Package Specialized In Special Use (AREA)
  • Cookers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Catching Or Destruction (AREA)
  • Table Equipment (AREA)
  • Fish Paste Products (AREA)
  • Closures For Containers (AREA)

Abstract

The present invention concerns a single-use valve ( 1 ) for mounting on a package ( 2 ), particularly food packages the contents which are to be heated in a microwave oven ( 3 ). The valve ( 1 ) is arranged to open in response to an excess pressure generated inside the package ( 2 ) upon heating of said package ( 2 ). The valve comprises an opening ( 4 ) formed in the package ( 2 ), on top of which opening ( 4 ) an adhesive layer ( 5 ) is applied. The valve ( 1 ) is also arranged to emit a sound signal when subjected to said pressure load.

Description

Single-use one-way valve for food package that emits sound signal at sufficient heating
Technical field of the invention
The present invention relates to a single-use valve intended to be mounted on a package, particularly food 5 packages the contents of which are to be heated in a microwave oven, said valve arranged to open in response to an excess pressure generated inside the package upon heating of the latter.
0 Background of the invention
In food packages, for example of the kind that contain heat-and-eat one-portion dishes and that are sold in refrigeration and freezing compartments, respectively, to be heated or cooked to ready-to-eat state in a microwave 5 oven, the food product usually is placed in a heat-resistant tray covered by plastic film. When the package is to be heated, the plastic film is either removed or apertures are pierced therein and the entire tray is then placed inside the microwave oven. Because of the varying 0 performance of different types of microwave ovens and because the food product absorbs microwave energy differently, depending on the composition and the temperature of the food product, heating times vary considerably. Consequently, it is difficult to give recommendations to 5 the consumer as to the exact heating times required to reach the ready-to-eat state. The consumer therefore might have to open and reopen the microwave door several times to convince himself that the dish is completely hot or completely cooked. However, it is difficult to estab- 0 lish whether all parts of the dish are hot or if locally it is still cold, and this is due to the inherent difficulty of microwave ovens to heat the food product evenly. Over-heating of the food is not either recommendable, since in this case the tray or the plastic film still po- sitioned thereon may melt locally and ruin the food, or since overheating makes the food soggy, over-cooked and unpalatable. The consumer therefore should remain beside the microwave oven during the heating in order to check when the food product has reached the ready state .
Summary of the invention
The object of the present invention therefore is to remove this problem. This object is achieved by means of a valve of the kind defined in the introduction, possessing the characteristic features defined in claim 1. Preferred embodiments of the valve appear from the claims depending on claim 1. The present invention relates to a single-use valve, which is intended for mounting on a package, particularly on food packages, the contents of which are to be heated in a microwave oven. The valve is arranged to open in response to an excess pressure generated in said package as the latter is being exposed to heat. The inventive valve is arranged to emit a sound signal when subjected to said pressure load. According to the teachings of the invention, the valve is arranged on a package intended to hold food products that are to be cooked/heated by the con- sumer until they reach a ready-to-eat state. This kind of package is commonly used for example as single-portion packages holding lunch or dinner dishes. The valve does not open until a predetermined water-vapor pressure is reached inside the package. Inside the package, equaliza- tion of temperature takes place as hot water-vapor condenses on cold areas of the product (the cold-wall principle) . Not until the entire product has reached about 100°C on the surface is it possible for an excess pressure of vapor to generate inside the package. The magni- tude of the valve-opening pressure could be determined on the basis of the resiliency of the valve material, the size of the valve opening or the melting point of the ad- hesive. The valve emits a sound signal as water vapor flows through the valve. The sound signal indicates to the user that the food product has reached the ready state. In this manner is achieved not only the even heat- ing results aimed for to ensure that some zones of the food product do not remain cold but also the user is given an audible indication that the dish is ready. The user need not open the microwave-oven door to ascertain the condition of the dish but could attend to other mat- ters in the meantime.
Alternatively, the valve is an indication of fracture, a slit or an aperture across which an adhesive layer is disposed. The adhesive layer is arranged in a manner ensuring that it is forced to move, when a flow of air and vapor exits through the valve, in response to which a sound signal is generated.
The valve preferably is configured as a slit formed in the package, on top of which slit an adhesive layer is placed. At least one part of the adhesive layer is formed with an adhesive of a kind that is suitable for use together with foodstuff, since the invention is primarily intended for food packages .
It is likewise suitable that the adhesive layer is a tape, preferably of a resilient kind to allow it to adapt itself to the movements of the package material during handling and not disengage itself from the support.
The adhesive layer could likewise be a label, thus minimizing the consumption of material as well as the amount of labor required to mark the product in outlet stores .
It is advantageous if the packaging material on which the valve is provided consists of a non-directional laminate. In a directional material, a slit would cause a rent to develop in the material. Brief description of the drawings
The invention will be described in the following in more detail with reference to the accompanying drawings, which for exemplifying purposes show presently particu- larly preferred embodiments of the invention. In the drawings :
Fig 1 is an overall view of a package having a valve in accordance with the present invention.
Fig 2 is a cross-sectional view showing two differ- ent stages of the process of heating a package having a valve in accordance with the present invention. Fig 2a shows the package in a cold state and Fig 2b the package in a heated state.
Fig 3 is a perspective view, showing a microwave oven.
Detailed description of preferred embodiments
The food package 2 of Fig 1 consists of a tray 7 holding a food product 8. A packaging material 6 in the form of a non-directional laminate is positioned on top of the tray 7 in order to protect the food product 8 from external manipulation during the production and distribution stages. The tray 7 as well as the laminate 6 consist of heat-resistant materials, since their intended func- tion is to enclose food that is to be heated. The laminate 6 is welded to the tray 7 to produce a strong and impermeable seam. The valve 1 in accordance with the present invention is formed in the non-directional laminate 6. The valve 1 is an opening 4 passing through the lami- nate. A resilient tape 5 the adhesive of which is suitable for use together with foodstuff is placed on top of the opening 4. The location of tape 5 is chosen such that the distance between the opening 4 and the longitudinal edges of the tape 5 in conjunction with the strength of the adhesive of the tape 5 ensures that an excess water- vapor pressure generated inside the package 2 as the food product contained therein is being heated, is powerful enough to force water vapor out through the opening 4 while passing between the tape 5 and the laminate and in doing so generate a sound signal owing to the vibration of the tape. Alternatively, a slit may be formed in the adhesive layer/tape 5 to prevent the longitudinal edge thereof to open up in an uncontrolled manner.
Fig 2a shows the same food package 2 as Fig 1. The food product 8 is positioned- in the tray 7, which is cov- , ered by the laminate 6. The valve 1, in the form of opening 4 and tape 5, is provided in the laminate 6. This drawing figure shows the food product 8 in the condition in which it is sold to the consumer, i.e. deep-frozen, refrigerated or stored in some other way. Fig 2b shows the food package 2 while being exposed to microwaves for heating purposes and in the state when the food product 8 is sufficiently warm for the water vapor to create an excess pressure inside the package 2 that is powerful enough to open the valve 1 and generate a sound signal. Fig 3 finally shows a microwave oven 3, in which the food package 2 may be positioned for heating of the food product 8.
As will be realized numerous modifications of the embodiment described above are possible within the scope of protection as defined in the appended claims. For example, instead of consisting of a tray 7 and a non-directional laminate 6, the food package 2 could be formed entirely of a plastic film or some other material suitable for storage of food 8. However, some part of the package 2 should consist of a type of non-directional laminate 6 that is suitable to form the valve 1 in accordance with the invention. The food package 2 could hold for example refrigerated or deep-frozen products. The size and shape of the tape 5 or label are not restricted to the shown embodiment.
The function of the valve 1 remains the same also if an indication of fracture is impressed into the non-di- rectional laminate 6 or an etching is made therein in such a manner that the laminate 6 still is in one piece with no through-passage opening formed in the material . The indication of fracture means that the packaging mate- rial 6 offers perfectly satisfactory protection to the contents inside the package 2 without having any contact with the adhesive layer up to the point, when the package 2 is heated. In the heating process, water vapor forms in the usual manner, and upon a predetermined excess pres- sure inside the package 2 it breaks the indication of fracture, whereby an opening 4 is formed, and vapor is forced outwards and together with the adhesive layer it generates the sound signal . The strength of the package material 6 itself is sufficient to prevent the material from bursting should an indication of fracture not have been provided. If for some reason the material should burst anyway, no sound signal would be emitted, since in all likelihood an uncontrolled rift in the material would be of a configuration that cannot produce a sound. In addition it is possible to provide a sound-emitting element of a flute-like type on top of the opening 4 in the package 2. This sound-emitting element likewise would serve to indicate when the food product 8 inside the package 2 is heated to the ready. It is likewise pos- sible to give the slit in the package another shape than a straight one, for instance a V-shape.

Claims

1. A single-use valve (1) for mounting on a package (2) , particularly food packages the contents of which are to be heated in a microwave oven (3) , said valve (1) arranged to open in response to an excess pressure generated inside the package (2) upon heating of the latter, c h a r a c t e r i z e d in that valve comprises an opening (4) formed in the package (2) , an adhesive layer (5) being applied on top of said opening (4) , and in that said valve (1) is arranged to emit a sound signal when subjected to said pressure load.
2. A valve (1) as claimed in claim 1, wherein said opening (4) is in the form of a slit (4) .
3. A valve (1) as claimed in claim 2, wherein said slit (4) is straight.
4. A valve (1) as claimed in claim 1, wherein at least one portion of the adhesive layer (5) comprises an adhesive that is suitable for use in conjunction with foodstuffs .
5. A valve (1) as claimed in claim 1, wherein said adhesive layer (5) is a tape.
6. A valve as claimed in claim 5, wherein said tape (5) is resilient.
7. A valve (1) as claimed in claim 1, wherein said adhesive layer (5) is a label.
8. A valve (1) as claimed in claim 1, wherein said packaging material (6) in which said valve (1) provided, consists of a non-directional laminate.
EP03713126A 2002-03-18 2003-02-27 Single-use one-way valve for food package that emits sound signal at sufficient heating Expired - Lifetime EP1485303B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0200801A SE0200801L (en) 2002-03-18 2002-03-18 One-way disposable valve for food packaging which, when sufficiently heated, emits an audible signal
SE0200801 2002-03-18
PCT/SE2003/000325 WO2003078266A1 (en) 2002-03-18 2003-02-27 Single-use one-way valve for food package that emits sound signal at sufficient heating

Publications (2)

Publication Number Publication Date
EP1485303A1 true EP1485303A1 (en) 2004-12-15
EP1485303B1 EP1485303B1 (en) 2006-04-19

Family

ID=20287290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03713126A Expired - Lifetime EP1485303B1 (en) 2002-03-18 2003-02-27 Single-use one-way valve for food package that emits sound signal at sufficient heating

Country Status (18)

Country Link
US (1) US20050199630A1 (en)
EP (1) EP1485303B1 (en)
JP (1) JP2005520743A (en)
KR (1) KR20040108665A (en)
CN (1) CN100354189C (en)
AT (1) ATE323652T1 (en)
AU (1) AU2003217099B2 (en)
BR (1) BR0308516A (en)
CA (1) CA2479143C (en)
DE (1) DE60304691T2 (en)
DK (1) DK1485303T3 (en)
ES (1) ES2262986T3 (en)
IS (1) IS2067B (en)
NO (1) NO20044270L (en)
PT (1) PT1485303E (en)
RU (1) RU2304075C2 (en)
SE (1) SE0200801L (en)
WO (1) WO2003078266A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4582077B2 (en) * 2003-11-28 2010-11-17 東洋製罐株式会社 Packaging container for microwave oven
AT502142B1 (en) * 2005-04-21 2007-07-15 Mondi Packaging Ag MICROWAVE-SUITABLE PACKAGING
SE528522C2 (en) * 2006-02-10 2006-12-05 Micvac Ab Valve for packaging, especially for food requiring heating, includes sealed opening part which opens under pressure and vibrates to generate noise as contents flow out
US8020723B2 (en) 2006-11-17 2011-09-20 Stull Technologies, Inc. Removable locking container lid with outer skirt
US8610039B2 (en) 2010-09-13 2013-12-17 Conagra Foods Rdm, Inc. Vent assembly for microwave cooking package
EP2124652B1 (en) 2007-01-08 2011-09-14 ConAgra Foods RDM, Inc. Microwave popcorn package; methods and product
USD703547S1 (en) 2011-06-14 2014-04-29 Conagra Foods Rdm, Inc. Microwavable bag
USD671012S1 (en) 2011-06-14 2012-11-20 Conagra Foods Rdm, Inc. Microwavable bag
RU2707259C2 (en) 2014-11-04 2019-11-25 Миквак Аб Method and furnace for vacuum cooking
SE538970C2 (en) 2015-02-12 2017-03-07 Micvac Ab Method and means for cooking and sterilization
ES1214089Y (en) 2018-05-10 2018-09-13 Garcia Pedro Terron Timed valves with warning system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640838A (en) * 1984-09-06 1987-02-03 Minnesota Mining And Manufacturing Company Self-venting vapor-tight microwave oven package
JPS63260510A (en) * 1987-04-18 1988-10-27 株式会社　中村屋 Flute playing container for food cooked by heating
JP3062468B2 (en) * 1998-01-23 2000-07-10 日清食品株式会社 Food packaging for microwave cooking

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03078266A1 *

Also Published As

Publication number Publication date
DE60304691T2 (en) 2007-03-29
DE60304691D1 (en) 2006-05-24
RU2304075C2 (en) 2007-08-10
CN100354189C (en) 2007-12-12
KR20040108665A (en) 2004-12-24
SE520355C2 (en) 2003-07-01
CA2479143C (en) 2009-09-15
SE0200801D0 (en) 2002-03-18
CA2479143A1 (en) 2003-09-25
PT1485303E (en) 2006-08-31
WO2003078266A1 (en) 2003-09-25
JP2005520743A (en) 2005-07-14
US20050199630A1 (en) 2005-09-15
ATE323652T1 (en) 2006-05-15
CN1642819A (en) 2005-07-20
EP1485303B1 (en) 2006-04-19
AU2003217099A1 (en) 2003-09-29
DK1485303T3 (en) 2006-07-31
BR0308516A (en) 2005-02-01
RU2004130498A (en) 2005-04-10
IS2067B (en) 2005-11-15
SE0200801L (en) 2003-07-01
ES2262986T3 (en) 2006-12-01
NO20044270L (en) 2004-10-08
IS7459A (en) 2004-09-17
AU2003217099B2 (en) 2006-03-02

Similar Documents

Publication Publication Date Title
JP4347407B2 (en) Packaging and containers
CA2419614C (en) Packaging material and packaging product
JP3707977B2 (en) Packaged food and packaged food containers
CA2479143C (en) Single-use one-way valve for food package that emits sound signal at sufficient heating
EP1597159B1 (en) Food package and method for heating a food package
JPH10129742A (en) Container with lid
WO2007091951A1 (en) Package valve system
JP2005035567A (en) Packaging container corresponding to microwave oven
JP2008050013A (en) Sealed container for microwave oven heating
JPH11147559A (en) Lid material and container using the same
EP1483174B1 (en) Microwaveable vacuum package
JPH10310181A (en) Packaging body for microwave oven
JP2000238860A (en) Packaging container for cooked food
JP3021691U (en) Electron beam shielding sheet
JP3069530U (en) Storage container for food for microwave oven
JP2003128160A (en) Packaging bag used in microwave oven
JP4437635B2 (en) Microwave packaging bag
JPH10123956A (en) Sealing label and package with sealing label
JP2021024583A (en) Packaging bag for microwave oven and heat treatment method of packaging bag
JP2007001631A (en) Packaging bag for use in microwave oven
JPH092538A (en) Electron beam shielding material
JP2021024584A (en) Packaging bag for microwave oven
JPH10114375A (en) Sealed container made of cardboard usable for heat cooking
JPH11349064A (en) Heat-insulating container for food to be cooked in microwave oven and microwave oven heating device
JP2000327045A (en) Bag for foodstuff

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040906

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060419

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60304691

Country of ref document: DE

Date of ref document: 20060524

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060719

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Effective date: 20060710

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20060419

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: NOVAGRAAF INTERNATIONAL SA

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2262986

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070228

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070122

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20090206

Year of fee payment: 7

Ref country code: ES

Payment date: 20090316

Year of fee payment: 7

Ref country code: IE

Payment date: 20090204

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20090206

Year of fee payment: 7

Ref country code: NL

Payment date: 20090204

Year of fee payment: 7

Ref country code: PT

Payment date: 20090227

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20090205

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090205

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060419

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070227

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090212

Year of fee payment: 7

Ref country code: TR

Payment date: 20090203

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061020

BERE Be: lapsed

Owner name: *MICVAC A.B.

Effective date: 20100228

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20100827

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20100901

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100827

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100901

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100227

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110405

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110203

Year of fee payment: 9

Ref country code: FR

Payment date: 20110216

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110323

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20110204

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120227

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121031

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60304691

Country of ref document: DE

Effective date: 20120901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100227

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120229

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120901