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EP0063108A2 - Matériau d'emballage - Google Patents

Matériau d'emballage Download PDF

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Publication number
EP0063108A2
EP0063108A2 EP82850063A EP82850063A EP0063108A2 EP 0063108 A2 EP0063108 A2 EP 0063108A2 EP 82850063 A EP82850063 A EP 82850063A EP 82850063 A EP82850063 A EP 82850063A EP 0063108 A2 EP0063108 A2 EP 0063108A2
Authority
EP
European Patent Office
Prior art keywords
packaging material
coating
heat radiation
heat
layer
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.)
Ceased
Application number
EP82850063A
Other languages
German (de)
English (en)
Other versions
EP0063108A3 (fr
Inventor
Carl-Axel Björkengren
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.)
Akerlund and Rausing AB
Original Assignee
Akerlund and Rausing 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 Akerlund and Rausing AB filed Critical Akerlund and Rausing AB
Publication of EP0063108A2 publication Critical patent/EP0063108A2/fr
Publication of EP0063108A3 publication Critical patent/EP0063108A3/fr
Ceased legal-status Critical Current

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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
    • 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
    • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups
    • 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
    • B65D2581/3463—Means for applying microwave reactive material to the package
    • B65D2581/3464—Microwave reactive material applied by ink printing
    • 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
    • B65D2581/3471—Microwave reactive substances present in the packaging material
    • B65D2581/3472—Aluminium or compounds thereof
    • 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
    • B65D2581/3471—Microwave reactive substances present in the packaging material
    • B65D2581/3479—Other metallic compounds, e.g. silver, gold, copper, nickel
    • 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
    • B65D2581/3486—Dielectric characteristics of microwave reactive packaging
    • B65D2581/3494—Microwave susceptor

Definitions

  • the present invention relates to a packaging material and more precisely to a material suitable for food product containing packages intended to be inserted directly into a processing oven, as well an ordinary heating oven as a microwave oven.
  • packaging material according to the invention is useful in as well heat oven applications as microwave oven applications implies that the invention provides a solution to what might look as a contradictory, incompatible problem of providing as well microwave transmission as heat radiation reflecting properties.
  • the packaging material basically has consisted of a carboard substrate coated by polyester or a corresponding heat resistant material. If, on the other hand, the use of an ordinary heating oven has been a stipulation, this has required a packaging material lined with a heat radiation reflecting, polyester coated aluminium foil or corresponding liner.
  • the former type of material is on the other hand useful in microwave applications, but not in heating ovens. This depends on the fact that the heat radiation from the oven as well as radiation from the food product that is packed creates, generally more or less local, hot spots of such a high temperature that the cardboard material below the polyester layer dry-distillates, i.e. chars. This makes the contents of the package more or less distasteful.
  • the main object of the invention is to satisfy the need just mentioned.
  • Another object of the invention is to solve the dual- purpose main problem, microwave transmission/heat radiation reflection, while still providing a packaging material capable of being processed by ordinary converting techniques.
  • a further object is to maintain the possibility of using printing facilities of the type generally found within the packaging industry.
  • a still further object is to provide cardboard type packaging materials which will withstand temperature exposure up to about 250° C during time intervals of 20 to 30 minutes.
  • Yet another object is to provide measures for arranging heat radiation reflecting regions in selected areas only of the packaging material, while maintaining sufficient heat resistance characteristics.
  • An additional object is to provide a packaging material which will also withstand mechanical wear and prevent smearing of the printing ink.
  • the invention provides a packaging material based on cardboard or a similar material which is formable into a suitable food-stuff package insertable with the food product contents thereof directly into a processing oven.
  • a packaging material based on cardboard or a similar material which is formable into a suitable food-stuff package insertable with the food product contents thereof directly into a processing oven.
  • at least a region of one side of the packaging material is provided with a coating comprising heat reflecting particles in a predetermined pattern, in for instance flake or particle shape.
  • the said coating of heat reflecting particles is included within a layer of polyester, polymethylpenten or any other material, for instance polypropylene, having corresponding heat resistance characteristics.
  • Said heat resistant layer preferably has a surface weight of 15-30 g/m 2 and the contents of heat reflecting particles amounts to 0,01-1 % by weight of said surface weight.
  • the heat reflecting particles preferably consist of metal particles of aluminium or another food-stuff inert metal.
  • the heat reflecting coating consists of a coating applied as a metallic printing ink, for instance by Offset-printing techniques, and forms a regular or irregular pattern or "grid" of-dots, flakes, etc. having a total coverage of about 10-70 % of the surface.
  • the metallic printing ink may be applied in selected areas only. If, for instance, the package formed of the packaging material is a tray covered by a closure, the central regions of as well the closure as the bottom of the tray may be left unprinted. The contact between the food product and the unprinted regions will be sufficient for cooling the closure and the bottom to a non dry- distillating temperature, since the water contents of the food will limit the temperature to about 100 C in the contact areas.
  • Said printing ink advantageously is protected by a polyester layer or a correspondingly temperature and mechanical wear resistant layer, which preferably has a surface weight of up to about 15-30 g/m 2 .
  • a heat cureable lacquer for instance of the acryle type might be used.
  • a heat and wear resistant plastic layer for instance a polyester layer with heat reflecting particles.contained therein forms a heat radiation reflecting layer, said layer preferably has randomly, but generally uniformly distributed heat reflecting particles.
  • the said heat radiation reflecting coating which in one way or the other, by printing a metallic ink or extrusion coating a metal particle containing composition, comprises the said heat reflecting particles may exists on both sides of the packaging material.
  • the packaging material is used for the manufacture of trays intended for containing one or several portions of food-stuff.
  • the tray 10 consists in the present case of the ordinary type of package cardboard material, having a gram-weight of 200-300 g.
  • the package blank On both sides thereof the package blank has been provided with folding denotations and scores 11, respectively, for the in-line erection of the tray.
  • a region 12 defined by a closed line 13.
  • a metallic ink for instance an Aluminum-Bronze ink or a Gold-Bronze ink, in all areas except for the region 12.
  • the print has been applied by conventional Offset-printing of planar cardboard sheets, having a weight-of 200-300 grams/m 2 .
  • the sheets from which individual package blanks are stamped out are coated on both sides thereof with a plastic layer, for instance a polypropylene layer in an amount of 15-30 g/m .
  • the tray closure 14 according to Figure 2 is of the same type of plastic coated carboard material as the tray. There is a metallic printing ink on the side forming the outside of the closure 14, except for within the region 16 defined by line 15.
  • the outside of the tray and closure may be covered by a lacquer, for instance of the acryle type.
  • the unprinted areas 12 and 16 provide "paper white” areas for displaying information on the contents of the package, etc. and generally may be tolerated also from a heating point of view, since tests have shown that the total heat reflecting capacity of a filled tray is sufficient for avoiding dry-distillation when heating in a conventional heating oven.
  • the food product generally contains enough water which, when heating the tray and the food therein, results in a cooling effect on the bottom and the closure, since the temperature of the food will remain at about 100 0 C although the temperature within the oven, primarily determined by heat radiation from heating elements, is much higher.
  • the areas 12 and 16 may be covered by a metallic ink.
  • the metallization of the tray may be obtained also by extrusion coating techniques.
  • a coating of a polyester either a polyethyleneterephtalat or a polybutyleneterephtalat (PETP, PBTP) having aluminium p ar - ticles dispersed therein.
  • Said coating has of course been obtained by coating a planar web, preferably by applying 15-30 g/m 2 of the plastic coating.
  • the contents of aluminium particles, or other food inert metallic particles, may be selected within the range 0,01-1 %.
  • Other extrusion coating compositions may be prepared from polymethylpenten (TPX from ICI), HD-polypropylene or HD-polyethylene.
  • the said plastic layer there exist aluminium particles in a so to say randomly, uniformly distributed configuration.
  • there exist free passages In the direction of the microwave radiation, there exist free passages.
  • the availability of such free passages is determined by the weight proportion of heat reflecting metal particles.
  • the existance of a heat reflecting coating on one side or both sides of the cardboard material is also a determinative factor. It has been found that the weight proportion of heat reflecting particles should fall within the range of 0,01-1 % by weight of the total surface weight of the coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Package Specialized In Special Use (AREA)
EP82850063A 1981-04-10 1982-03-25 Matériau d'emballage Ceased EP0063108A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8102315 1981-04-10
SE8102315A SE8102315L (sv) 1981-04-10 1981-04-10 Forpackningsmaterial

Publications (2)

Publication Number Publication Date
EP0063108A2 true EP0063108A2 (fr) 1982-10-20
EP0063108A3 EP0063108A3 (fr) 1983-01-05

Family

ID=20343574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82850063A Ceased EP0063108A3 (fr) 1981-04-10 1982-03-25 Matériau d'emballage

Country Status (2)

Country Link
EP (1) EP0063108A3 (fr)
SE (1) SE8102315L (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161739A3 (en) * 1984-02-15 1986-08-13 Alcan International Limited Microwave heating package and method
FR2579565A1 (fr) * 1985-04-02 1986-10-03 Gorcy Sa Procede pour le rechauffage de produits alimentaires frais ou surgeles et moyens pour sa mise en oeuvre
GB2201070A (en) * 1987-01-13 1988-08-17 Christopher John Cobham Smail Microwave cooking
WO1988009754A1 (fr) * 1987-06-09 1988-12-15 Leigh-Mardon Pty. Limited Emballage interactif avec les micro-ondes
EP0206811A3 (en) * 1985-06-25 1989-02-08 Alcan International Limited Microwave container
EP0344574A1 (fr) * 1988-05-23 1989-12-06 The Pillsbury Company Suscepteurs ayant une couche métallisée déposée sur du papier pour le chauffage des aliments dans un four à micro-ondes
WO1990002087A1 (fr) * 1988-08-22 1990-03-08 E.I. Du Pont De Nemours And Company Emballage de forme adaptable a effet brunisseur avec bords thermoscelles se decollant sous l'action de la chaleur pour la cuisson aux micro-ondes
WO1990005440A1 (fr) * 1988-11-04 1990-05-17 The Pillsbury Company Support brunisseur pour le chauffage de produits alimentaires dans un four a micro-ondes dote d'une couche metallisee deposee sur du papier
US5021293A (en) * 1986-02-21 1991-06-04 E. I. Du Pont De Nemours And Company Composite material containing microwave susceptor material
WO1996004186A1 (fr) * 1994-08-03 1996-02-15 Gics & Vermee, L.P. Emballage de produit alimentaire pouvant passer au four
WO1996015049A1 (fr) * 1994-08-03 1996-05-23 Gics & Vermee, L.P. Recipient pour produit alimentaire
FR2898591A1 (fr) * 2006-03-17 2007-09-21 Francois Berthault Dispositif de conditionnement et de cuisson de cereales extrudees ou analogue
US11643559B2 (en) 2017-07-25 2023-05-09 Magnomer, Inc. Methods and compositions for magnetizable plastics
JP2024542813A (ja) * 2021-12-17 2024-11-15 サン・ケミカル・ベスローテン・ベンノートシャップ 耐熱性水性インク
US12478979B2 (en) 2019-01-30 2025-11-25 Magnomer, Inc. Methods and compositions for magnetizable plastics

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US281943A (en) * 1883-07-24 Hay-rake
DE7017533U (de) * 1970-05-11 1970-08-20 Kalle Ag Mehrschichtiger flaechenhafter materialverbund.
GB1386635A (en) * 1972-05-19 1975-03-12 Mardon Son Hall Ltd Disposable heating containers
GB1593523A (en) * 1978-05-25 1981-07-15 Metal Box Co Ltd Food containers
SE7907117L (sv) * 1979-08-27 1981-02-28 Findus Forpackning for livsmedelsprodukter

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161739A3 (en) * 1984-02-15 1986-08-13 Alcan International Limited Microwave heating package and method
FR2579565A1 (fr) * 1985-04-02 1986-10-03 Gorcy Sa Procede pour le rechauffage de produits alimentaires frais ou surgeles et moyens pour sa mise en oeuvre
EP0206811A3 (en) * 1985-06-25 1989-02-08 Alcan International Limited Microwave container
US4866234A (en) * 1985-06-25 1989-09-12 Alcan International Limited Microwave container and method of making same
US5021293A (en) * 1986-02-21 1991-06-04 E. I. Du Pont De Nemours And Company Composite material containing microwave susceptor material
GB2201070A (en) * 1987-01-13 1988-08-17 Christopher John Cobham Smail Microwave cooking
WO1988009754A1 (fr) * 1987-06-09 1988-12-15 Leigh-Mardon Pty. Limited Emballage interactif avec les micro-ondes
US5059436A (en) * 1987-06-09 1991-10-22 Leigh-Mardon Pty. Limited Microwave interactive package
EP0344574A1 (fr) * 1988-05-23 1989-12-06 The Pillsbury Company Suscepteurs ayant une couche métallisée déposée sur du papier pour le chauffage des aliments dans un four à micro-ondes
WO1990002087A1 (fr) * 1988-08-22 1990-03-08 E.I. Du Pont De Nemours And Company Emballage de forme adaptable a effet brunisseur avec bords thermoscelles se decollant sous l'action de la chaleur pour la cuisson aux micro-ondes
US4911938A (en) * 1988-08-22 1990-03-27 E. I. Du Pont De Nemours And Company Conformable wrap susceptor with releasable seal for microwave cooking
US4970360A (en) * 1988-11-04 1990-11-13 The Pillsbury Company Susceptor for heating foods in a microwave oven having metallized layer deposited on paper
WO1990005440A1 (fr) * 1988-11-04 1990-05-17 The Pillsbury Company Support brunisseur pour le chauffage de produits alimentaires dans un four a micro-ondes dote d'une couche metallisee deposee sur du papier
WO1996004186A1 (fr) * 1994-08-03 1996-02-15 Gics & Vermee, L.P. Emballage de produit alimentaire pouvant passer au four
WO1996015049A1 (fr) * 1994-08-03 1996-05-23 Gics & Vermee, L.P. Recipient pour produit alimentaire
FR2898591A1 (fr) * 2006-03-17 2007-09-21 Francois Berthault Dispositif de conditionnement et de cuisson de cereales extrudees ou analogue
WO2007113415A3 (fr) * 2006-03-17 2007-11-29 Francois Berthault Dispositif de conditionnement et de cuisson de cereales extrudees ou analogue
US11643559B2 (en) 2017-07-25 2023-05-09 Magnomer, Inc. Methods and compositions for magnetizable plastics
US12209190B2 (en) 2017-07-25 2025-01-28 Magnomer, Inc. Methods and compositions for magnetizable plastics
US12478979B2 (en) 2019-01-30 2025-11-25 Magnomer, Inc. Methods and compositions for magnetizable plastics
JP2024542813A (ja) * 2021-12-17 2024-11-15 サン・ケミカル・ベスローテン・ベンノートシャップ 耐熱性水性インク

Also Published As

Publication number Publication date
SE8102315L (sv) 1982-10-11
EP0063108A3 (fr) 1983-01-05

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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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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL

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Inventor name: BJOERKENGREN, CARL-AXEL