WO2003013980A1 - Emballage de produits alimentaires micro-ondable - Google Patents

Emballage de produits alimentaires micro-ondable Download PDF

Info

Publication number
WO2003013980A1
WO2003013980A1 PCT/EP2001/014332 EP0114332W WO03013980A1 WO 2003013980 A1 WO2003013980 A1 WO 2003013980A1 EP 0114332 W EP0114332 W EP 0114332W WO 03013980 A1 WO03013980 A1 WO 03013980A1
Authority
WO
WIPO (PCT)
Prior art keywords
package
food product
microwave
layer
seal
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
PCT/EP2001/014332
Other languages
English (en)
Inventor
Claude Bergerioux
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
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 Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Publication of WO2003013980A1 publication Critical patent/WO2003013980A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • 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
    • B65D2581/3401—Cooking or heating method specially adapted to the contents of the package
    • B65D2581/3402—Cooking or heating method specially adapted to the contents of the package characterised by the type of product to be heated or cooked
    • B65D2581/3428—Cooking unusual food, i.e. none of the above foods

Definitions

  • the present invention relates to a microwave heatable ood product package .
  • the packaging material has a multilayer structure comprising a layer of fibrous material, e.g. paper, covered on both sides with layers of heat-seal plastic material, e.g. polyethylene, and, in the case of aseptic packages for long-storage products, such as UHT milk, also comprises a layer of oxygen-barrier material defined, for example, by an aluminium film which is superimposed on a layer of heat-seal plastic material and is in turn covered with another layer of heat-seal plastic material eventually defining the inner face of the package contacting the food product .
  • a layer of fibrous material e.g. paper
  • heat-seal plastic material e.g. polyethylene
  • a typical example of such a package is the parallelepiped-shaped package for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark) , which is formed from a continuous tube of packaging material obtained by bending and longitudinally- sealing a web packaging material; the web of packaging material is sterilized on the packaging machine itself, e.g. by applying a chemical sterilizing agent, such as a hydrogen peroxide solution, which, after sterilization, is removed, e.g. vaporized by heating, from the surfaces of the packaging material; and the web of packaging material so sterilized is maintained in a closed sterile environment, and is folded and sealed longitudinally to form a vertical tube .
  • a chemical sterilizing agent such as a hydrogen peroxide solution
  • the tube is filled with the sterilized or sterile- processed food product, and is sealed and cut at equally spaced cross sections to form pillow packs, whose ends are then folded mechanically to form a pair of bottom triangular flaps folded and heat-sealed against the bottom surface of the package and a pair of upper flaps folded and heat-sealed against respective lateral walls of the package.
  • a similar process may be used to produce wedge- shaped packages, such as the packages commercially available under the trade name Tetra Wedge Aseptic (registered trademark) .
  • a wedge-shaped package is obtained from a pillow pack by mechanically folding only the two bottom flaps, and leaving the top transversal seal of the pack linear and flat, so as to define the edge of the wedge shape.
  • the wedge-shaped packages are relatively inexpensive, have excellent stand-up capability and may be provided with a prelaminated hole (i.e. made in the paper layer but not in the barrier layer of the packaging material) or with a hole internally protected by a breakable patch of oxygen barrier material, in the upper part near the top transversal seal, so as to allow the use of a drinking straw.
  • Parallelepiped packages are generally used for different food products, including drinks and relatively dense or viscous products such as sauces, e.g. cooking cream or tomato sauce, in a wide variety of dimensions (e.g. from 125 to 2000 ml).
  • sauces e.g. cooking cream or tomato sauce
  • Known wedge-shaped packages are generally used for single portions of liquid food products, in particular drinks, ranging from 50 to 400 ml .
  • packages of the above-described types obtained from laminated web packaging materials, have been widely used in connection with food products to be consumed cold.
  • An aim of the present invention is to provide a food product package made from web packaging material, which can be easily and quickly microwave-heated without opening the package beforehand.
  • an object of the invention is to provide a microwave- heatable package which has a built-in safety function, thereby dispensing with the need to incorporate safety valves or the like .
  • a microwave- heatable package containing a food product to be consumed hot, said package being made from a packaging sheet material including at least one layer adapted to provide mechanical strength, a barrier layer pervious to microwave radiations, and at least an outer and an inner heat seal layers, said package being substantially wedge- shaped and including a rectangular base wall, a front wall and a back wall extending from opposite sides of the base wall and joining together at a top transversal seal, said top transversal seal being adapted to open upon exposure of said package to microwave radiations .
  • the wedge shape concentrates both mechanical stress due to internal pressure and temperature increase on the top seal, which opens when the food product is hot.
  • Figure 1 is a back view of a package according to the present invention
  • Figure 2 is a side elevational view of the package of Figure 1;
  • Figure 3 is a perspective view of the package of figure 1 subjected to a microwave heating process.
  • Figure 4 is a perspective view of the package of figure 1 after the microwave heating process.
  • numeral 1 references a package products according to the present invention containing a food product 2 to be consumed hot, for example a hot drink or a baby food product or a pediatric nutritional product, or a dense or viscous fluid such as a sauce containing oils or fats or a soup.
  • Package 1 is made from a web packaging material 3
  • package 1 includes a rectangular base wall (not shown) 4, a front wall 5 and a back wall 6 of substantially isosceles trapezoidal shape with their respective shorter bases adjacent to base wall 4 and their respective longer bases sealed together by a top transversal seal 7, and a pair of lateral walls 8, 9 of substantially triangular shape.
  • Package 1 is obtained, in a manner known per se, by longitudinally bending ad sealing a web (not shown) of material 3 to form a continuous tube; the longitudinal seal is referenced 10 in figure 1 and extends along back wall 6.
  • the continuous tube is then filled with the food product 2 and transversally sealed at constant intervals to form pillow packs (not shown) .
  • Material 3 is provided with a crease pattern, not shown as known in itself, which allows the material to be easily folded along inclined lateral corners and along base corners, to form lateral bottom flaps 13, 14 which are folded and sealed against base wall 4 to ensure shape stability of the package.
  • Material 3 (see enlarged detail of fig. 1) is a multi-layer laminated material basically including a heat seal outer layer 15, preferably made of PE, a paper layer 16 adapted to provide some mechanical strength, a barrier layer 17 and a heat seal inner layer 18 preferably made of LDPE (Low Density PE) or Metallocene . Additional mechanical strength is imparted to the packaging material structure by the barrier material which has a high melt temperature, whereby to maintain a high mechanical strength, even at high temperatures (e.g., 120°C) . In this way, stresses are transferred to the heat seal inner layer during heating. Adhesive layers of known type (not shown) may be further provided between the paper layer and the barrier layer, as well as between the barrier layer and the inner layer.
  • Adhesive layers of known type (not shown) may be further provided between the paper layer and the barrier layer, as well as between the barrier layer and the inner layer.
  • barrier layer 15 ' is pervious to microwave radiation, so as to allow microwave radiation to reach the food product 2;
  • barrier layer is made from a polymer or a mineral coated polymer having a high melting temperature, e.g. over 130°C.
  • the barrier layer is made from a material chosen in the group including SiOx-coated PET, SiOx-coated PA, SiOx-coated EVOH; alternatively, if the barrier effect is sufficient, EVOH alone may be used.
  • suitable coatings for the barrier layer include silicon nitride, aluminium oxide, diamond-like carbon coatings or combinations thereof.
  • the package 1 can be microwave-heated without opening the package.
  • the combination of the shape of the package 1 and the pressure increase inside the package due to steam evolution consequent to microwave irradiation brings about the surprising effect that the top transversal seal 7 unseals, i.e. the package opens automatically along the top transversal seal 7, when the food product is hot (fig: 4) . This happens because the wedge shape of the package concentrates mechanical and thermal stress onto the top transversal seal 7.
  • the barrier layer has a higher melt strength than the heat-seal inner layer, and the wedge shape transfers stresses exerted on the package, during heating, to the top transversal seal.
  • the wedge shaped geometry produces temperature gradients in the food product; in particular, the product in the central zone near the base wall 4 of the package has the lowest temperature (40- 50°C) , whilst the product in the central zone near the top surface reaches the highest temperature (up to 120° in case of fatty sauces) ; the product in the vicinity of lateral walls 8, 9 ranges form about 60°C near the base wall to about 80°C near the top surface.
  • the combination of the wedge shape and a microwave-pervious barrier layer allows the food product to be safely heated without any risk of explosion or spill, and without any need to open the package before heating.
  • No safety device such as a pressure release valve is necessary, which would be very difficult to provide in an aseptic package.
  • the package After heating, the package is open and ready for use, and can be safely handled both because of its excellent stability, due to its geometry, and because of the good heat insulating properties of the packaging material, which remains relatively fresh at its outer surface .
  • the layer of the packaging material adapted to provide mechanical strength may be made from a polymeric material, e.g. expanded polypropylene, rather than from paper material .
  • a polymeric material e.g. expanded polypropylene
  • Another example of packaging sheet material according to the present invention would thus include the following layers (from inside to ouside) : PE, PET/SiOx, PE, expanded polypropylene, PE.
  • the package could be made from a sheet packaging material cut into blanks, rather than from a continuous packaging material tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Package Specialized In Special Use (AREA)

Abstract

La présente invention concerne un emballage micro-ondable (1) contenant un produit alimentaire (2) à consommer chaud ; l'emballage (1) est constitué d'un matériau d'emballage en feuille (3) présentant une couche de protection (17) perméable aux rayonnements micro-ondes et sensiblement cunéiforme, un fond (4), une paroi avant (5) et une paroi arrière (6) s'étendant à partir des côtés opposés du fond (4) et se rejoignant au niveau d'un joint d'étanchéité transversal supérieur (7); le joint d'étanchéité transversal supérieur (7) étant conçu pour s'ouvrir lors de l'exposition de l'emballage (1) aux rayonnements micro-ondes.
PCT/EP2001/014332 2001-08-06 2001-12-05 Emballage de produits alimentaires micro-ondable Ceased WO2003013980A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01118968.5 2001-08-06
EP01118968A EP1283179A1 (fr) 2001-08-06 2001-08-06 Emballage pour le chauffage à micro-ondes de produits alimentaires

Publications (1)

Publication Number Publication Date
WO2003013980A1 true WO2003013980A1 (fr) 2003-02-20

Family

ID=8178256

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/014332 Ceased WO2003013980A1 (fr) 2001-08-06 2001-12-05 Emballage de produits alimentaires micro-ondable

Country Status (2)

Country Link
EP (1) EP1283179A1 (fr)
WO (1) WO2003013980A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7323669B2 (en) 2002-02-08 2008-01-29 Graphic Packaging International, Inc. Microwave interactive flexible packaging
DE10349744B3 (de) * 2003-10-23 2005-04-14 Gisela Rinderspacher Verpackung für Lebensmittel
NL1026001C2 (nl) * 2004-04-22 2005-10-25 Fico Bv Doseereenheid met omhulmateriaal en werkwijze voor het vervaardigen van zo een doseereenheid.
US9296171B2 (en) 2008-03-11 2016-03-29 Frito-Lay North America, Inc. Method for making a flat bottom pillow pouch
EP3093309B1 (fr) 2015-05-11 2018-03-21 Coating Plasma Industrie Procédé de dépôt d'un revêtement de barrière aux gaz sur un film polymère ou récipient en polymère et film polymère ou récipient en polymère revêtu d'une telle barrière aux gaz

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0431273A (ja) * 1990-05-14 1992-02-03 Toyo Alum Kk 食品包装体
EP0537109A2 (fr) * 1991-09-25 1993-04-14 Alusuisse-Lonza Services Ag Emballage en forme de sac
EP0768248A1 (fr) * 1994-04-26 1997-04-16 Shimaya Co., Ltd. Sachet pour la cuisson par micro-ondes
FR2769006A1 (fr) * 1997-09-29 1999-04-02 Pescanova France Sa Materiau d'emballage notamment pour papillotes et emballage realise a partir de ce materiau
FR2796047A1 (fr) * 1999-07-06 2001-01-12 Danisco Flexible France Emballage pour le conditionnement d'une preparation alimentaire
EP1099645A1 (fr) * 1999-11-10 2001-05-16 Wipak Gryspeert Société Anonyme Emballage avec dispositif de propreté et de sécurité

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0431273A (ja) * 1990-05-14 1992-02-03 Toyo Alum Kk 食品包装体
EP0537109A2 (fr) * 1991-09-25 1993-04-14 Alusuisse-Lonza Services Ag Emballage en forme de sac
EP0768248A1 (fr) * 1994-04-26 1997-04-16 Shimaya Co., Ltd. Sachet pour la cuisson par micro-ondes
FR2769006A1 (fr) * 1997-09-29 1999-04-02 Pescanova France Sa Materiau d'emballage notamment pour papillotes et emballage realise a partir de ce materiau
FR2796047A1 (fr) * 1999-07-06 2001-01-12 Danisco Flexible France Emballage pour le conditionnement d'une preparation alimentaire
EP1099645A1 (fr) * 1999-11-10 2001-05-16 Wipak Gryspeert Société Anonyme Emballage avec dispositif de propreté et de sécurité

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 206 (M - 1248) 15 May 1992 (1992-05-15) *

Also Published As

Publication number Publication date
EP1283179A1 (fr) 2003-02-12

Similar Documents

Publication Publication Date Title
AU780703B2 (en) Packaging material and packaging product
CA2430871C (fr) Emballage scelle pour produits alimentaires pouvant etre verses
CN103597910B (zh) 微波能量相互作用袋
FI95679B (fi) Menetelmä ja pakkaus pilaantuvien nesteiden pakkaamiseksi yläpäädystä suljettaviin pahvipakkauksiin
EP1725473B1 (fr) Barquette alimentaire prete a l'emploi et procede de fabrication
EP0887285B1 (fr) Sachet pour emballage sous vide et méthode d'emballage sous vide
EP2321196B1 (fr) Procede de production d'emballage a auto-evacuation
AU702390B2 (en) Packaging laminates based on cardboard and paper
RU2289535C2 (ru) Упаковочный ламинированный материал для стерилизуемого упаковочного контейнера
EP3089919B1 (fr) Matériau d'emballage et contenant d'emballage pourvu d'un dispositif d'ouverture fabriqué à partir de celui-ci
KR20130082441A (ko) 폐쇄 시스템의 일부로서 덮인 홀을 갖는 무알루미늄의 평면 합성물로 구성된 식품용 용기
KR20130082442A (ko) 냉각식 접힘에 의하여 다수의 내부 층을 갖는 무알루미늄의 평면 합성물로 식품용 용기를 제조하는 방법
GB2462995A (en) Food packaging sheet for use in microwave ovens
EA024044B1 (ru) Контейнер и способ изготовления контейнера
JP5733809B1 (ja) 包装材料、包装袋、包装容器及び包装体
EP1283179A1 (fr) Emballage pour le chauffage à micro-ondes de produits alimentaires
EP0836574B1 (fr) Procede destine a allonger la duree de conservation d'un aliment
KR20130008012A (ko) 냉각식 접힘에 의하여 내부 층을 갖는 무알루미늄의 평면 합성물로 식품용 용기를 제조하는 방법
JP2005524581A (ja) 注出可能な食品のシールパッケージをシートパッケージ材料のプレカットブランクから製造する方法および包装機械
WO2018022106A1 (fr) Emballages avec fonction de drainage contrôlée
FI109345B (fi) Nestepakkaus
WO2000017060A1 (fr) Emballage etanche ameliore pour produits alimentaires coulants
CN120282915A (zh) 用于生产密封包装的多层片状包装材料
WO2010059091A1 (fr) Procédé d’emballage et de traitement thermique d’un produit alimentaire
KR19990009207A (ko) 진공포장백 및 진공포장방법

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EE ES FI GB GD GE GH GM HU ID IL IN IS JP KE KG KP KR KZ LK LR LS LT LU LV MA MD MG MK MW MX MZ NO NZ PH PL PT RO RU SE SG SI SK SL TJ TM TR TT TZ UA US UZ VN YU ZA

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZM ZW AM AZ BY KG KZ RU TJ TM AT BE CH CY DE DK FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP