EP1912865B1 - Conditionnement refermable apte aux micro-ondes - Google Patents

Conditionnement refermable apte aux micro-ondes Download PDF

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Publication number
EP1912865B1
EP1912865B1 EP06805636A EP06805636A EP1912865B1 EP 1912865 B1 EP1912865 B1 EP 1912865B1 EP 06805636 A EP06805636 A EP 06805636A EP 06805636 A EP06805636 A EP 06805636A EP 1912865 B1 EP1912865 B1 EP 1912865B1
Authority
EP
European Patent Office
Prior art keywords
micro
perforation
packaging
packaging according
area
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.)
Not-in-force
Application number
EP06805636A
Other languages
German (de)
English (en)
Other versions
EP1912865A2 (fr
Inventor
Friedrich Kastner
Stefan Zoister
Gyula Madai
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.)
Mondi AG
Original Assignee
Mondi AG
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 Mondi AG filed Critical Mondi AG
Priority to PL06805636T priority Critical patent/PL1912865T3/pl
Priority to SI200630643T priority patent/SI1912865T1/sl
Publication of EP1912865A2 publication Critical patent/EP1912865A2/fr
Application granted granted Critical
Publication of EP1912865B1 publication Critical patent/EP1912865B1/fr
Priority to CY20101100564T priority patent/CY1110110T1/el
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • B65D81/3461—Flexible containers, e.g. bags, pouches, envelopes
    • 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
    • B65D2205/02—Venting holes
    • 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
    • B65D2205/02—Venting holes
    • B65D2205/025—Venting holes having a removable label, sticker or adhesive foil covering the hole
    • 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
    • B65D2581/00—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
    • B65D2581/34—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
    • B65D2581/3437—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 specially adapted to be heated by microwaves
    • B65D2581/3439—Means for affecting the heating or cooking properties
    • B65D2581/345—Chemical browning agents or aroma adding agents, e.g. smoked flavour

Definitions

  • the invention relates to a package for food, ready meals, animal feed, non-food products, such as cold-hot packs, packaged refreshment wipes, detergents, cleaning agents and the like, which is suitable for use in the microwave, in the oven or in a water bath.
  • non-food products such as cold-hot packs, packaged refreshment wipes, detergents, cleaning agents and the like
  • Packaging is understood to be rigid, semi-rigid or flexible packaging. Such packages tend to burst or rupture due to the expansion of content and expansion of air and gases associated with heating. To a limited extent, this risk can be reduced by using packaging that is significantly larger than the volume of the product. Furthermore, the water present in the product is converted into steam when heated. This steam can not or hardly escape through the usual sealed packaging, so it is not possible crispy heating of ready meals.
  • a package which has a multilayer structure.
  • the outer layer and the inner layer are heat-fusible merge together.
  • a connecting part by which the outer layer is connected to an inner layer by a connecting means and a region where the outer layer is not connected to the inner layer so that a communicating passage having an exit opening to the outer space is formed.
  • On the inside means are provided which connect the interior with the communicating passage.
  • the exit opening is with a Adhesive layer provided that breaks when a certain pressure in the interior of the package breaks. This ensures a certain overpressure in the package when heated in the microwave, and also ensures controlled release of the overpressure above a certain value.
  • a package of an unopened heatable, in particular microwave heatable material which has at least one sealing region which becomes locally permeable when a certain internal pressure is exceeded, said sealing region has at least one Soll dielassabêt forming a throttle for the package contents, and in the form of a channel-like Passage is formed, and comprises a packaging interior facing the tip, which is preferably sealed.
  • valve construction Disadvantage of this valve construction is that the valve opens easily not only in the case of overpressure induced by heating, but also under mechanical pressure. Furthermore, the passage is not exactly dimensioned. In addition, there is the possibility that migrated during production, autoclaving, sterilization, storage or heating filling material from the package into the valve, the contents presses the valve then prematurely and can escape into the surrounding space of the microwave oven. But there is also the possibility that the valve is clogged by the infiltrated contents and the steam can not escape to the extent necessary. The valve must also be placed in the area of a sealed seam and can not be freely applied in another area of the film.
  • a package which has an absorber for the moisture escaping on heating, which makes a crisper preparation possible. Without a valve, through which excess steam can escape, the absorber is used up too quickly.
  • All these packages can not be closed again after opening and can therefore not be stored after opening and removing part of the contents, for example in the refrigerator WO 2005/007531 and WO 01/92000 show more packaging.
  • the object of the invention was to provide a suitable for heating in the microwave, in the oven or in a water bath packaging in the one hand, the construction of a defined pressure and a controlled escape of steam is possible and makes a steam cooking possible.
  • the invention therefore relates to a packaging suitable for heating in a microwave oven, in an oven or in a water bath, consisting of a multilayer film material which has at least one region which becomes permeable when an internal pressure generated by the heating is exceeded, characterized in that this region is formed is permeable by a micro perforation, which is covered by a lacquer coating, and when heated, the paint coating overlying the microperforated area and the microperforation is closed by the cooling paint when the packaging is cooled.
  • the microperforation can be introduced by needling or by means of a laser beam in the film material.
  • the shape of the microperforated area may vary and may have, for example, the shape of a circle, rectangle, square, trapezium, triangle, an elliptical or semi-elliptical shape, but also the shape of defined characters, symbols, lines, letters, inscriptions and the like.
  • the shape of the micro-perforation may be in the form of a circle, a slit, a rectangle, a square and the like.
  • the arrangement of the circles, slits, rectangles or squares and the like of the micro-perforation may optionally give a logo and the like.
  • the dimensions of the microperforation in its longitudinal and / or widthwise extent may be 10 ⁇ m to 1.5 mm, preferably 50 ⁇ m to 1 mm. If appropriate, at least in the microperforated area, a further film can be laminated by means of a varnish or adhesive varnish softenable by the action of heat which has microperforations offset from the first microperforations. This achieves a temporally and spatially offset opening of the microperforated valve.
  • the microperforated valve can be applied anywhere on the package.
  • the microperforated area is covered with a varnish coating.
  • the paint coating may be aqueous or solid paint systems, in particular also a paint system based on polyester acrylate or epoxy acrylate rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate, urethane, butadiene, styrene or their copolymers which may be conventional or reactive curing (chemical or radiation curing).
  • the lacquer or the microperforation covering label, hot stamping foil or covering lacquer coating may also contain energy absorbing additives such as metallic additives, graphite, energy absorbing pigments or particles and the like.
  • energy absorbing additives such as metallic additives, graphite, energy absorbing pigments or particles and the like.
  • particles and pigments come into question whose molecular components come into resonance by the incident microwave radiation and are put into thermal oscillation or in which currents are induced by the incident microwave radiation.
  • These are understood in particular to mean pigments or particles which contain molecular water, such as water glass or zeolites.
  • known conductive polymers can also be used.
  • the paint coating can be prepared by known coating or printing processes, by gravure, flexographic printing, screen printing, offset printing, Digital printing, smooth roll, raster or line screening method, each with co-rotation or reverse run, curtain coating and the like are applied to the microperforated area.
  • the paint layer lying above the microperforated area becomes brittle and therefore permeable, and the resulting steam can escape.
  • the packaging cools, the microperforation is closed again by the cooling paint.
  • the packaging can be sealed again and, for example, stored until further use, optionally with cooling.
  • the film material of the packaging is two or more layers.
  • the outer layer preferably consists of a film of plastic, for example polyester, such as oriented PET amorphous PET, polyolefins such as polypropylene, cast-PP, blown, stretched, biaxially oriented PP films, or polyethylene, polystyrene, polycarbonate, cellophane, polyamide, polyvinyl chloride or their copolymers.
  • polyester such as oriented PET amorphous PET, polyolefins such as polypropylene, cast-PP, blown, stretched, biaxially oriented PP films, or polyethylene, polystyrene, polycarbonate, cellophane, polyamide, polyvinyl chloride or their copolymers.
  • coextruded or laminated plastic composite films or composites with paper can be used.
  • the thickness of the outer layer is preferably 8-200 ⁇ m.
  • the inner layer preferably consists of a sealable medium, for example of plastic films of polyolefins, such as polyethylene, polypropylene, EVOH, EVA, and / or its copolymers or terpolymers, polystyrene, polycarbonate, cellophane, polyamide, polyvinyl chloride.
  • the inner layer can also be formed by extrusion coating or painting the outer film with one of the plastics mentioned.
  • the thickness of the inner layer is preferably 0.5-100 ⁇ m.
  • Intermediate layers may optionally be located between the outer and inner layers.
  • interlayers may include, for example, barrier layers such as alumina layers or silicon oxide layers, organic barrier layers such as polyamide layers, absorber layers, for example gas absorber layers such as O 2 , CO 2 absorber layers, water vapor absorber layers, ethylene absorber layers, printed layers, layers providing increased flexibility or strength or stiffness, and the like be.
  • barrier layers such as alumina layers or silicon oxide layers
  • organic barrier layers such as polyamide layers
  • absorber layers for example gas absorber layers such as O 2 , CO 2 absorber layers, water vapor absorber layers, ethylene absorber layers, printed layers, layers providing increased flexibility or strength or stiffness, and the like be.
  • the entire layer composite of the packaging according to the invention may optionally comprise a plurality of intermediate layers and combinations of these intermediate layers, wherein the layers either each have good adhesion to each other or may be interconnected by adhesive aids such as adhesives.
  • a feature can be applied around this area on the film material and the covering material in each case, such that when it becomes permeable, it shows a clear change in the appearance.
  • two different colored features can be applied, which form a mixed color in the covered state. After opening the valve, the two layers are separated, the pure colors appear.
  • one or more absorber layers can be provided for the water vapor formed during the heating.
  • absorber layers for example, hydrophilic polymers, such as EVA, highly filled with zeolites polymers, silica gel, nonwovens, or tissue have embedded the hydrophilic polymers, zeolite-coated nonwovens or tissue in question.
  • the absorber layer may be applied to the inner layer by printing processes.
  • the absorber layer can also be fixed to the inner layer with a thin sealing layer or membrane.
  • the fixation layer or the membrane may have a predetermined breaking point. When a defined pressure in the package is exceeded, the membrane is stretched and ruptures at the predetermined breaking point, whereby the absorber layer is exposed and the resulting water vapor can be absorbed.
  • such an additional membrane may also contain flavoring substances, for example smoking substances, or the like, which are then released when the defined pressure is exceeded by opening the membrane.
  • flavoring substances for example smoking substances, or the like
  • encapsulated aroma substances can also be introduced in the valve region, which are released when the valve is opened.
  • the packaging may have a preferably recloseable opening aid, for example a laser perforation, a tear thread, wherein this opening can then be resealed by applying a label.
  • a recloseable opening aid for example a laser perforation, a tear thread, wherein this opening can then be resealed by applying a label.
  • the packaging may be in the form of a bag, a bag, a stand-up pouch, a tray, sachet, pouch or in the form of a sealing film for containers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Packages (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Claims (11)

  1. Emballage adapté pour le réchauffement au four à micro-ondes, au four ou au bain-marie, consistant en un film de matériau à plusieurs épaisseurs et comportant au moins une partie qui, en cas de dépassement d'une pression intérieure générée par le réchauffement aux micro-ondes, devient transparente, cette partie étant constituée par une micro-perforation, caractérisé en ce que la micro-perforation est recouverte par un revêtement de peinture et qu'en cas de réchauffement, le revêtement peint se trouvant sur la partie micro-perforée devient transparent et qu'en cas de refroidissement de l'emballage, la micro-perforation est refermée par la peinture se refroidissant.
  2. Emballage selon la revendication 1, caractérisé en ce que la partie micro-perforée présente par exemple la forme d'un cercle, rectangle, carré, trapèze, triangle, une forme elliptique ou demi-elliptique mais aussi la forme de signes, symboles, lettres, inscriptions et éléments similaires définis.
  3. Emballage selon une des revendications 1 ou 2, caractérisé en ce que la micro-perforation est réalisée sous forme d'un cercle, d'une fente, d'un rectangle, d'un carré et similaires.
  4. Emballage selon une des revendications 1 à 3, caractérisé en ce que la micro-perforation donne la forme d'un logo.
  5. Emballage selon une des revendications 1 ou 2, caractérisé en ce que la partie micro-perforée est réalisée par un revêtement peint à base d'un mélange ou d'un acrylate de polyester ou d'un époxyacrylate à système de colophane, acrylate, alkyde, mélamine, PVA, PVC, isocyanate, systèmes d'uréthane, butadiène, système de styrène ou leurs copolymères.
  6. Emballage selon la revendication 3, caractérisé en ce que le revêtement peint contient un matériau additif absorbant l'énergie.
  7. Emballage selon une des revendications 1 à 4, caractérisé en ce que des couches intermédiaires sont prévues entre la couche extérieure et la couche intérieure.
  8. Emballage selon la revendication 5, caractérisé en ce que les couches intermédiaires sont des couches faisant barrière, des couches absorbantes, des couches de brunissement, des couches de souplesse ou de résistance ou de rigidité et/ou imprimées.
  9. Emballage selon une des revendications 1 à 6, caractérisé en ce que, sur la face tournée vers l'espace intérieur de l'emballage de la couche intérieure, est placée une couche absorbante qui est fixée par une membrane qui présente un point de rupture théorique.
  10. Emballage selon une des revendications 1 à 7, caractérisé en ce que, au niveau de la micro-perforation, sont appliquées diverses caractéristiques qui, après ouverture de la soupape, montrent une nette modification de l'aspect visuel.
  11. Film de matériau pour la fabrication d'emballages selon une des revendications 1 à 8, qui présente au moins une partie qui, en cas de dépassement d'une pression intérieure générée par le réchauffement aux micro-ondes, devient transparente, cette partie étant constituée par une micro-perforation, caractérisé en ce que la micro-perforation est recouverte par un revêtement de peinture et qu'en cas de réchauffement, le revêtement peint se trouvant sur la partie micro-perforée devient transparent et qu'en cas de refroidissement, la micro-perforation est refermée par la peinture se refroidissant.
EP06805636A 2005-07-27 2006-07-26 Conditionnement refermable apte aux micro-ondes Not-in-force EP1912865B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL06805636T PL1912865T3 (pl) 2005-07-27 2006-07-26 Opakowanie zamykane wielokrotnie, nadające się do użytku w kuchence mikrofalowej
SI200630643T SI1912865T1 (sl) 2005-07-27 2006-07-26 Ponovno zapirajoča se embalaža primerna za mikrovalove
CY20101100564T CY1110110T1 (el) 2005-07-27 2010-06-17 Συσκευασια που μπορει να ξανακλεισει καταλληλη για μικροκυματα

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0125705A AT502215A1 (de) 2005-07-27 2005-07-27 Wiederverschliessbare mikrowellengeeignete verpackung
PCT/EP2006/007345 WO2007012468A2 (fr) 2005-07-27 2006-07-26 Conditionnement refermable apte aux micro-ondes

Publications (2)

Publication Number Publication Date
EP1912865A2 EP1912865A2 (fr) 2008-04-23
EP1912865B1 true EP1912865B1 (fr) 2010-04-21

Family

ID=37562084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06805636A Not-in-force EP1912865B1 (fr) 2005-07-27 2006-07-26 Conditionnement refermable apte aux micro-ondes

Country Status (12)

Country Link
US (1) US20100276327A1 (fr)
EP (1) EP1912865B1 (fr)
AT (2) AT502215A1 (fr)
CA (1) CA2617078A1 (fr)
CY (1) CY1110110T1 (fr)
DE (1) DE502006006808D1 (fr)
DK (1) DK1912865T3 (fr)
ES (1) ES2342845T3 (fr)
PL (1) PL1912865T3 (fr)
PT (1) PT1912865E (fr)
SI (1) SI1912865T1 (fr)
WO (1) WO2007012468A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2005250421A1 (en) * 2004-05-27 2005-12-15 Perftech Inc. Packaging material and method for microwave and steam cooking of perishable food product
ITVA20100086A1 (it) * 2010-11-30 2012-05-31 Masterpack S P A Sacchetto termosaldato per confezionamento di prodotti alimentari soggetti a rilascio di gas o vapori dopo sigillatura e nastro continuo per la formazione dei sacchetti
DE102019126625B4 (de) * 2019-10-02 2022-02-17 Lang Laser-System Gmbh Verpackung für ausgasende und/oder nachreifende Lebensmittel, insbesondere für gerösteten Kaffee und/oder Kaffeebohnen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3198260B2 (ja) * 1996-11-13 2001-08-13 尾本 等 圧力調節弁機能を有する包装材料及び飲食品パッケー
WO2001092000A1 (fr) * 2000-06-01 2001-12-06 Irene Lin Procede de production d'un film multicouche permeable a l'air
EP1303395B1 (fr) * 2001-07-23 2006-03-29 Trex Limited International Film d'emballage
GB2367527B (en) * 2001-07-23 2002-09-11 Abdul Aziz Okhai Packaging film
GB0316708D0 (en) * 2003-07-16 2003-08-20 Dupont Teijin Films Us Ltd Polymeric film
US7543708B2 (en) * 2004-08-23 2009-06-09 United States Gypsum Company Plastic bag for fine powders
DE102004047256A1 (de) * 2004-09-29 2006-04-13 Lang Laser-System Gmbh Folienverpackung für Lebensmittel mit Überdruckventil

Also Published As

Publication number Publication date
PT1912865E (pt) 2010-07-01
WO2007012468A2 (fr) 2007-02-01
SI1912865T1 (sl) 2010-09-30
ES2342845T3 (es) 2010-07-15
CY1110110T1 (el) 2015-01-14
DK1912865T3 (da) 2010-07-26
DE502006006808D1 (de) 2010-06-02
PL1912865T3 (pl) 2010-09-30
US20100276327A1 (en) 2010-11-04
CA2617078A1 (fr) 2007-02-01
AT502215A1 (de) 2007-02-15
ATE465098T1 (de) 2010-05-15
WO2007012468A3 (fr) 2007-03-29
EP1912865A2 (fr) 2008-04-23

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