WO1990015514A1 - Emballage pour four a hyperfrequence - Google Patents

Emballage pour four a hyperfrequence Download PDF

Info

Publication number
WO1990015514A1
WO1990015514A1 PCT/CA1990/000188 CA9000188W WO9015514A1 WO 1990015514 A1 WO1990015514 A1 WO 1990015514A1 CA 9000188 W CA9000188 W CA 9000188W WO 9015514 A1 WO9015514 A1 WO 9015514A1
Authority
WO
WIPO (PCT)
Prior art keywords
tear
blank
vent openings
strip
panel
Prior art date
Application number
PCT/CA1990/000188
Other languages
English (en)
Inventor
Peter Calcagni
John A. Huspeka
Daniel P. Smith
Original Assignee
Mccain Foods Limited
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 Mccain Foods Limited filed Critical Mccain Foods Limited
Publication of WO1990015514A1 publication Critical patent/WO1990015514A1/fr

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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/54—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing
    • B65D5/5405—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form
    • B65D5/5415—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form the lines of weakness being provided in one or more closure flaps and in the container body so as to form after rupture a lid hinged to a side edge of the container body
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4295—Ventilating arrangements, e.g. openings, space elements
    • 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
    • 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
    • B65D2581/3437—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

  • This invention relates to food packages or cartons wherein the contents can be heated or cooked in a microwave oven without removing same from the package.
  • the container or package of the present invention allows for the proper venting of the food product cooked therein by providing easily openable vent openings of predetermined size.
  • a food package for use in microwave ovens comprising spaced-apart front and back walls, opposed side walls, and opposed top and bottom walls, all joined together along adjacent peripheral edges thereof to form a box.
  • the front wall includes spaced- apart lines of perforation to provide a tear-open flap.
  • At least one of the walls has spaced-apart vent openings formed therein, and detachable closure means close the vent openings.
  • a blank for forming a microwave oven food package comprising a central panel having a center portion and opposed end flaps joined thereto along respective first crease lines.
  • Left and right panels are joined to the central panel along respective second crease lines located perpendicularly to the first crease lines, each of the left and right panels having an inner portion adjacent to the central panel and opposed outer portions joined to the inner portion along extensions of the first crease lines.
  • Opposed end panels are joined to the respective left and right panels along third crease lines located parallel to the second crease lines.
  • Means for forming vent openings are provided in one of the panels.
  • Detachable closure elements are adapted to close the vent openings.
  • one of the panels has spaced-apart lines of perforation formed therein to provide a tear-open flap.
  • Figure 1 is a plan view of a preferred embodiment of a blank for forming a container or package according to the present invention
  • Figure 2 is a perspective view of a package formed from the blank of Figure 1 showing the initial removal of a tear-off strip;
  • Figure 3 is a perspective view similar to Figure 2 showing the continued removal of the tear-off strip
  • Figure 4 is a perspective view of the container of Figures 2 and 3 shown in its completely open configuration
  • Figure 5 is a plan view of another embodiment of a blank for forming a food package according to the present invention
  • Figure 6 is a perspective view of a package or carton formed from the blank of Figure 5;
  • Figure 7 is a perspective view of the carton of Figure 6 showing the initial removal of a tear-off strip and the opening of the vent openings; and Figure 8 is a perspective view showing the carton of Figures 6 and 7 in its completely open configuration.
  • a blank for forming a preferred embodiment of a carton or package according to the present invention is generally indicated -by reference numeral 10.
  • the package formed from this blank is generally indicated by reference numeral 12.
  • Blank 10 has a central panel 14 having a centre portion 16 and opposed end flaps 18 joined thereto along respective first crease lines 20 represented by chain dotted lines.
  • Left and right panels 22, 24 are joined to central panel 14 along respective second crease lines 26, again represented by chain dotted lines.
  • Second crease lines 26 are located perpendicularly to first crease lines 20.
  • FIG. 22 has an inner portion 28 adjacent to central panel 14 and opposed outer portions 30 joined to inner portion 28 along extensions of the first crease lines 20.
  • Right panel 24 also has an inner portion 32 located adjacent to central panel 14 and opposed outer portions 34 joined to inner portion 32 also along extensions of the first crease lines 20.
  • Opposed end panels 36, 38 are joined to the respective left and right panels 22, 24 along third crease lines 40, again represented by chain dotted lines, which are located parallel to and spaced from second crease lines 26.
  • vent openings 42 are located in outer portions 30 of left panel 22.
  • Perforated tear- off strips 44 are located in outer portions 34 of right panel 24 and are adapted to cover vent openings 42 when blank 10 is folded into a box or carton with the respective adjacent outer portions 30, 34 overlapping, as will be described further below.
  • End panel 38 is also formed with a perforated tear-off strip 46 which, when removed, defines or exposes a gripping portion 48 located between tear-off strip 46 and inner portion 32 of right panel 24, as seen best in Figure 4.
  • right panel 24 has a transverse perforated line or crease line 50 about mid-way down the panel, and lines of perforation 52 extending down longitudinal peripheral edges of right panel 24 to crease or perforated line 50, thus forming a tear-open flap 54 as seen best in Figure 4.
  • End panel 36 also has a central longitudinal tear-off strip 56 formed by parallel double lines of perforation 58. Tear-off strip 56 is in registration with and becomes part of tear-off strip 46 when blank 10 is formed into a box with end panels 36, 38 overlapping as indicated in Figures 2 to 4.
  • the tear-off strips 44 of right panel 24 have elongate extensions 60 which are attached to tear-off strip 56 and in turn to tear-off strip 46, thus forming a continuous tear-off strip when the blank is formed into a box.
  • a microwave receptor pad 62 covers the inner portions 28, 32 of left and right panels 22, 24 and central portion 16 of central panel 14.
  • Microwave receptor strip 62 includes a vacuum vapor deposited continuous film of electrically conductive elemental metal, such as aluminum, as described in United states Patent No. 4,641,005 and Canadian Patent No. 1,153,069 issued to Oscar E. Seiferth.
  • the microwave receptor strip 62 per se is not considered to be part of the present invention, so will not be described in further detail. Other types of microwave receptor materials could be used if desired, and in fact, in some cases no microwave receptor strip is required.
  • the particular microwave receptor strip 62 described herein is particularly useful for browning or making fried foods crispy in a microwave oven, because it gets very hot when exposed to microwave radiation.
  • Blank 10 as shown in Figure 1 has a plurality of strategically placed adhesive strips 64 for joining the various panels together. Strips 64 consist of the usual type of resin adhesive as is standard in the paper box making industry.
  • the entire blank 10 can be coated with a suitable thermoplastic material or coating, in which case the plastic coating forms the adhesive using a heat seal at the desired locations as the box is assembled.
  • Blank 10 is formed into a box or carton using a conventional mandrel technique wherein centre portion 16 is pushed into or through a form causing end flaps 18 and left and right panels 22, 24 to be folded upwardly and inwardly with end flaps 18 tucked inside outer portions 30, and outer portions 30 in turn tucked inside outer portions 34.
  • Figure 1 shows the surface of blank 10 which becomes the inside of the box to be formed. The box formed to this point will have an open top and can be filled with the desired food contents. Thereafter, the portions of the blank with elongate extensions 60 are folded inwardly, end panel 36 is folded down on top of the extensions 60, and finally end panel 38 is folded downwardly onto end panel 36 to complete the box.
  • the completed box is shown in Figure 2 except that tear-off strip 44 would be intact.
  • the thus formed box has spaced-apart front and back walls (the front wall being formed mainly by right panel 24) , opposed side walls (formed by the overlapping outer portions 30, 34), and opposed top and bottom walls (the top wall formed by overlapping end panels 36, 38, and the bottom wall being formed by centre portion 16) , all of these walls being joined together along adjacent peripheral edges thereof to form the box or package 12.
  • tear-off strip 44 When it is desired to cook the contents located inside package 12 in a microwave oven, the lower end of tear-off strip 44 is gripped and pulled upwardly as indicated in Figure 2. This strip continues on to pick up the top tear-off strip 46 as indicated in Figure 3, and then continues downwardly as indicated by arrow 66 to remove the tear-off strip from the right side of package 12 exposing the vent openings 42 below the strip. At this point, package 12 with its contents can be placed in a microwave oven to cook the contents. After this, gripping portion 48 is grasped and pulled outwardly and downwardly to open tear-open flap 54 as indicated in Figure 4 exposing the french fries or the like indicated by chain dotted lines 68, to be consumed right out of package 12 if desired.
  • FIG. 70 another embodiment for making a box or package according to the present invention is generally represented by reference numeral 70, and a package or box made from blank 70 is generally represented by reference numeral 72.
  • FIGs 5 through 8 primed reference numerals have been used to indicate portions of the blank 70 and package 72 that are similar to those of the embodiment shown in Figures 1 to 4.
  • vent holes 74 are formed in center portion 16' of central panel 14' and in end panel 36'.
  • vent holes 74 in the form of incomplete perforated circles, thereby providing knock-outs 76 closing the vent holes until the knock ⁇ outs 76 are pushed inwardly to open the vent holes as indicated by the arrows in Figure 7.
  • End panel 38' has access openings 78 which are in registration with vent holes 74 in end panel 36' when blank 70 is formed into a box or container, as shown in Figures 6 to 8.
  • Outer portion 34' of right panel 24' has a perforated tear-off strip 80.
  • Outer portion 30' of left panel 22' has a semi-circular cut out 82.
  • gripping portion 48' can be lifted and a finger inserted through semi-circular cut out 82 to pull tear-open flap 54' downwardly and open package 72 as indicated in Figure 8.
  • Individual microwave receptor pads 84 cover each of the left and right panel inner portions 28' 32*.
  • End panel 36' has extensions 86, 88 for sealing the corners of package 72.
  • Perforated lines 90, 92 are formed along first crease lines 20' so that extension 88 and end flap 18' can be torn off with outer portion 30' as the top of package 72 is opened as indicated in Figure 8.
  • Blank 70 is formed into package 72 using a tri-seal technique, wherein outer portions 30', end panel 36' and central portion 16' are folded upwardly about inner portion 28' of left panel 22*. Extensions 86, 88 and end flaps 18' are tucked inside outer portions 30*. This forms a half open box which can then be filled with the desired food product. Right panel 24' is then folded over so that inner portion 32 liess above and in registration with left panel inner portion 28' . Outer portions 34' are then folded downwardly against outer portions 30' and end panel 38 is folded downwardly on top of end panel 36' to produc the box shown in Figure 6.
  • tear-off strip 80 is removed, tear-open flap 54' opened downwardly and the top of package 72 is opened upwardly, as indicated by the arrows in Figure 8.
  • the size, shape and location of the vent holes can be changed as desired to suit the product contained in packages 12, 72. Enlarging the vent holes allows mor steam to escape but also more heat loss. For any giv food product, the size of the vent holes is pre- determined to suit the type of food and the cooking time and temperature, as can easily be determined by simple trial and error testing. Also, the size of packages 12, 72 can be varied as desired. In the preferred embodiments, packages 12, 72 are approximately 13 centimeters in height, 9 centimeters in width, and 4 centimeters de The tear-off strips are approximately 1.3 centimeter in width and the vent openings are between 1 and 1.4 centimeters in diameter.
  • crease lines instead of using crease lines to define th panels, other types of fold lines or score lines cou be used as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Cartons (AREA)

Abstract

Emballage pour aliments (12, 72) et flan (10, 70) destiné à le former, ayant une application particulière dans les fours à hyperfréquence destinés à chauffer les produits alimentaires, tels que les frites. L'emballage comporte des parois avant et arrière espacées, des parois latérales opposées, et des parois supérieure et inférieure espacées, toutes reliées par leurs bords contigus afin de former une boîte. La paroi avant comprend des lignes de perforations espacées (52) formant un abattant s'ouvrant par déchirage (54). Au moins une des parois comprend des évents espacés. Dans un mode de réalisation, des éléments enfonçables (76) ferment les évents (74) et dans un autre mode de réalisation une languette de déchirage (44) recouvre les évents (42). Une plaquette réceptrice d'hyperfréquences (62, 80) est située à l'intérieur de la boîte afin d'absorber les radiations à hyperfréquences et de chauffer le contenu de la boîte.
PCT/CA1990/000188 1989-06-05 1990-06-05 Emballage pour four a hyperfrequence WO1990015514A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA601,803 1989-06-05
CA601803 1989-06-05

Publications (1)

Publication Number Publication Date
WO1990015514A1 true WO1990015514A1 (fr) 1990-12-13

Family

ID=4140164

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1990/000188 WO1990015514A1 (fr) 1989-06-05 1990-06-05 Emballage pour four a hyperfrequence

Country Status (2)

Country Link
AU (1) AU5832190A (fr)
WO (1) WO1990015514A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563442A1 (fr) * 1992-04-03 1993-10-06 Waddingtons Cartons Limited Emballage pour l'emploi dans un four à micro-ondes
US5839652A (en) * 1994-07-18 1998-11-24 Fold-Pak Europe Limited Box for food products
GB2368507A (en) * 2000-10-25 2002-05-01 Boxes Microwave packaging
EP1452458A2 (fr) * 2003-02-26 2004-09-01 Polestar Jowetts Limited Carton pour nourriture
EP1481922A3 (fr) * 2003-05-29 2008-11-12 Micro Chef, Inc. Emballage pour four à micro-ondes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096948A (en) * 1977-03-18 1978-06-27 American Can Company Cook-in carton with integral removable section and blank therefor
US4228945A (en) * 1979-03-05 1980-10-21 Champion International Corporation Food carton for microwave heating
US4592914A (en) * 1983-06-15 1986-06-03 James River-Dixie/Northern, Inc. Two-blank disposable container for microwave food cooking
US4746019A (en) * 1987-04-20 1988-05-24 Ridgeway Packaging Corp. End fill microwavable and/or ovenable container
WO1988005249A1 (fr) * 1986-12-24 1988-07-14 Mardon Son & Hall Limited Chauffage aux micro-ondes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096948A (en) * 1977-03-18 1978-06-27 American Can Company Cook-in carton with integral removable section and blank therefor
US4228945A (en) * 1979-03-05 1980-10-21 Champion International Corporation Food carton for microwave heating
US4592914A (en) * 1983-06-15 1986-06-03 James River-Dixie/Northern, Inc. Two-blank disposable container for microwave food cooking
WO1988005249A1 (fr) * 1986-12-24 1988-07-14 Mardon Son & Hall Limited Chauffage aux micro-ondes
US4746019A (en) * 1987-04-20 1988-05-24 Ridgeway Packaging Corp. End fill microwavable and/or ovenable container

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563442A1 (fr) * 1992-04-03 1993-10-06 Waddingtons Cartons Limited Emballage pour l'emploi dans un four à micro-ondes
US5369256A (en) * 1992-04-03 1994-11-29 Waddingtons Cartons Limited Packaging capable of microwave heating
US5839652A (en) * 1994-07-18 1998-11-24 Fold-Pak Europe Limited Box for food products
GB2368507A (en) * 2000-10-25 2002-05-01 Boxes Microwave packaging
EP1452458A2 (fr) * 2003-02-26 2004-09-01 Polestar Jowetts Limited Carton pour nourriture
EP1452458A3 (fr) * 2003-02-26 2004-11-03 Polestar Jowetts Limited Carton pour nourriture
EP1481922A3 (fr) * 2003-05-29 2008-11-12 Micro Chef, Inc. Emballage pour four à micro-ondes

Also Published As

Publication number Publication date
AU5832190A (en) 1991-01-07

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