EP0624142B1 - Emballage de pop-corn monocouche, etanche a la graisse et flexible - Google Patents

Emballage de pop-corn monocouche, etanche a la graisse et flexible Download PDF

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Publication number
EP0624142B1
EP0624142B1 EP93904767A EP93904767A EP0624142B1 EP 0624142 B1 EP0624142 B1 EP 0624142B1 EP 93904767 A EP93904767 A EP 93904767A EP 93904767 A EP93904767 A EP 93904767A EP 0624142 B1 EP0624142 B1 EP 0624142B1
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EP
European Patent Office
Prior art keywords
bag
grease
pleat
popcorn
package
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.)
Expired - Lifetime
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EP93904767A
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German (de)
English (en)
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EP0624142A1 (fr
Inventor
Duane L. Mcdonald
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General Mills Inc
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General Mills Inc
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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
    • B65D81/3461—Flexible containers, e.g. bags, pouches, envelopes
    • B65D81/3469—Pop-corn bags
    • 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
    • B65D2581/3421—Cooking pop-corn
    • 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 generally to packages for use in microwave ovens, and pertains more particularly to an expandable bag having protection from grease leaking and/or wicking from its expansion creases or folds and/or to a flexible popcorn package made from a single layer of greaseproof paper.
  • the packages When microwave popcorn packages were first introduced utilizing a microwave susceptor, the packages typically were formed by expandable paperboard containers and often the load of the microwave popcorn popping package was located in a plastic bag positioned inside of the paperboard container including the microwave susceptor.
  • the paperboard container in most instances was unfolded into an expanded size by the consumer prior to popping of the popcorn kernels in the microwave oven but in some instances was unfolded by the popping of the popcorn kernels, with the popped popcorn being served in the expanded paperboard containers.
  • Early packages suffered from several disadvantages including the bulk of expandable paperboard containers which increased the amount of material required to make the container and thus its cost, increased the size of the packaging and storage requirements, as well as increased the amount of material which had to be disposed of after the consumption of the popcorn raising environmental concerns.
  • paper microwave popcorn popping bags including microwave susceptors encountered different types of problems.
  • the load of a microwave popcorn popping package includes unpopped popcorn kernels, a cooking oil or grease, salt, and other ingredients such as colorings, flavorings, or the like.
  • the oil and/or grease have a tendency to leak from flexible paper packages, especially at high temperatures, causing aesthetically unpleasant appearances.
  • the, oil and/or grease have a tendency to wick from flexible paper packages.
  • Current flexible paper popcorn bags such as disclosed in United States Patent No.
  • 5,044,777 typically use a tri-laminate of a greaseproof paper adhered to an outer fluorocarbon treated, grease resistant paper with a microwave susceptor sandwiched between.
  • the inner layer could be formed of bleached greaseproof Kraft paper of 11.5 kg. (25 lb.)/ream basis weight and the outer layer could be formed of plain bleached Kraft paper of 13.5 kg. (30 lb.)/ream basis weight.
  • the two paper layers and the adhesive therebetween together provide the needed grease barrier in both storage and/or transportation at high temperatures as well as during microwave cooking.
  • laminated paper popcorn bags suffer from several disadvantages. First, the paper bag has a great deal of stiffness resulting from the multiple layers themselves but also their adhesive interconnection.
  • Stiffness detracts from the ability of the bag to inflate or expand during microwave popping of the popcorn which may in turn detrimentally affect the volume of the popped kernels. Also, the lamination of the materials requires extra assembly costs and the amount of materials used for each bag adds to the economic and environmental costs.
  • the present invention provides an expandable, paper, popcorn package for holding popcorn kernels and grease or oil for popping in a microwave oven comprising, in combination: a bag having an interior volume and a closed end openable by the consumer after microwave cooking; and susceptor means for converting microwave energy into heat extending over a portion of the bag, with the popcorn kernels and the grease or oil generally overlying the susceptor means during microwave cooking; characterized in that the bag is formed of a single layer of greaseproof paper having a thickness allowing the single layer to be flexed by the popping of the popcorn kernels and also preventing the wicking and leaking of the grease or oil through the single layer.
  • the problem of grease wicking and actual leaking is especially present at folds and creases where the fibers of the paper and coatings applied thereto for the greaseproofing characteristics are fractured and/or separated.
  • This problem has been one of the major factors in limiting the amount that the material and/or number of layers can be reduced in flexible paper popcorn bags, as the mass and number of layers of material are relied upon to provide the needed grease barrier.
  • a package in the form of a bag including grease protectors for sealing the surfaces of the walls of the bag adjacent to their connecting, folding edges to prevent the grease or oil from leaking or wicking from the interior volume of the bag.
  • the package includes pleated, expandable side walls, with the grease protectors located inside of the bag where the inside surfaces of the pleats overlie other inside surfaces of the bag and also located outside of the bag where the outside surfaces of the pleats overlie other outside surfaces of the bag.
  • a package for use in microwave ovens is shown as an expandable, flexible bag in the drawings and generally designated 18. It will facilitate the ensuing description to consider bag 18 in the horizontal position when placed in the microwave oven as opposed to a vertical or upright position when the contents of bag 18 are being consumed by the consumer. Therefore, bag 18 includes a bottom wall 20, a top wall 22, an end wall 24, side walls 26 and a closed end 28. In the preferred form, the width of bottom wall 20 is less than the width of top wall 22, although the widths of walls 20 and 22 could be equal.
  • End wall 24 provides a non-opening permanent seal to the first end of bag 18.
  • the cross sectional makeup of end wall 24 includes a number of folds that are not important to an understanding of the present invention so will not be specifically described, although end wall 24 should be constructed so as to seal adequately the vapor created within bag 18 during the heating thereof in the microwave oven.
  • end wall 24 is shown as being of the type shown in U.S. Patent No. 4,973,810 and is formed by folding the first ends of bottom, top, and side walls 20, 22, and 26 over top wall 22.
  • end wall 24 can have a flat rectangular or square configuration, with such bags being commonly referred to as square bottom bags in the trade.
  • bag 18 can optionally include the non-heated flap of the type shown and described in U.S. Patent No. 4,864,090.
  • end wall 24 can be a variety of types and configurations such as but not limited to the types shown in U.S. Patent Nos. 3,973,045; 4,450,180; 4,691,374; and 5,044,777.
  • side walls 26 include gussets or pleats 26a, 26b, 26c and 26d that enable side walls 26 to expand during a heating cycle.
  • pleats 26a and 26b are connected together at first edges and have second and third, opposite edges connected to bottom wall 20 and top wall 22, respectively.
  • pleats 26c and 26d are connected together at fourth edges and have fifth and sixth, opposite edges connected to bottom wall 20 and top wall 22, respectively.
  • pleats 26a and 26c in its collapsed condition, pleats 26a and 26c have the same width and overlie bottom wall 20, and pleats 26b and 26d have the same width which is greater than the width of pleats 26a and 26c and overlie pleats 26a and 26c, with top wall 22 overlying pleats 26b and 26d.
  • bottom and top walls 20 and 22 have a width extending beyond the interconnections of pleats 26a and 26b and of pleats 26c and 26d when bag 18 is in its collapsed condition.
  • the second, free ends of pleats 26a, 26b, 26c and 26d forming side walls 26, of bottom wall 20, and of top wall 22 are co-planar, and have the same extent or length from end wall 24.
  • End 28 provides a peelable closure seal which fails during microwave cooking adjacent the second, free ends of bottom, top and side walls 20, 22, and 26 or in other words, adjacent the second end of bag 18. This peelable seal failure allows trapped steam to vent from the package, as well as allowing the consumer to open bag 18 after microwave cooking and prior to eating.
  • end 28 is formed in a manner as shown and described in U.S. Patent No. 5,189,272, which is hereby incorporated herein by reference, and includes first and second v-shaped adhesive strips 34 and 36.
  • Strip 34 is located on bottom wall 20 having first and second, straight legs 34a and 34b interconnected by their first ends at an angle in the order of 140° and having their second ends extending to the interconnection of pleats 26a and 26c to bottom wall 20, respectively.
  • Strip 36 overlies strip 34 and is located on top wall 22 having first and second, straight legs 36a and 36b interconnected by their first ends at an angle in the order of 140° and having their second ends extending to the interconnection of pleats 26b and 26d to top wall 22, respectively.
  • leg 34a adheres and seals pleat 26a to bottom wall
  • leg 34b adheres and seals pleat 26c to bottom wall
  • leg 36a adheres and seals pleat 26b to top wall
  • leg 36b adheres and seals pleat 26d to top wall 22.
  • strips 34 and 36 adhere and seal bottom wall 20 to top wall 22 at their central portions 37 intermediate the interconnections of pleats 26a and 26b and of pleats 26c and 26d.
  • Areas 38a, 38b, 38c and 38d are formed and defined by the material between the free ends of walls 20, 22, and 26 and strips 34 and 36 and located on the opposite side of strips 34 and 36 forming the peelable seal than end 24, with areas 38a, 38b, 38c, and 38d being free of adhesive and unsealed in the preferred form. Due to the angular orientation of legs 34a, 34b, 36a, and 36b, areas 38a, 38b, 38c, and 38d are of a triangular configuration.
  • legs 34a, 34b, 36a, and 36b are located in the central portions 37 of bottom and top walls 20 and 22 having widths extending beyond pleats 26a, 26b, 26c, and 26d and since legs 34a, 34b, 36a and 36b extend therefrom in a linear manner at an obtuse angle to the opposite edges of pleats 26a, 26b, 26c, and 26d, areas 38a, 38b, 38c, and 38d are of a large size for grasping by the consumer and specifically are considerably larger than flaps formed by adhesive extending at small angles relative to each other and only through the pleats such as when a box-like shape is desired as disclosed in U.S. Patent 5,044,777.
  • end 28 can be a variety of types and configurations according to preferred aspects of the present invention such as but not limited to the types shown in U.S. Patent Nos. 3,973,045; 4,450,180; 4,691,374; 4,864,090; 4,973,810; and 5,044,777.
  • susceptor pad 30 that extends over a portion of bottom wall 20 spaced from end wall 24 and end 28.
  • Susceptor pad 30 can be formed in any suitable manner known in the art such as a metalized plastic film adhered to bottom wall 20, as a paper backed susceptor, or as a coating applied or printed to bottom wall 20. Further, although susceptor pad 30 is shown as overlying bottom wall 20 and thus located inside of bag 18, susceptor pad 30 can be located outside of bag 18 with bottom wall 20 overlying susceptor pad 30. Further, placement of susceptor pad 30 can occur at the material convertor or on the manufacturing lines.
  • bag 18 can be manufactured as current bags are manufactured for example of the type shown and described in U.S. Patent Nos. 4,450,180; 4,735,513; 4,878,765; 4,691,374; or 5,044,777.
  • bag 18 can be formed by cutting a web of material to length, folding that length of material to form the tubular bag stock including bottom, top, and side walls 20, 22, and 26, and then forming end wall 24 by folding and adhering bottom, top and side walls 20, 22, and 26.
  • the overlapping edges of the web of material forming the tubular bag stock has been omitted in Figures 1-3 for ease of illustration.
  • the free, second ends of bottom, top, and side walls 20, 22, and 26 are all of the same length and specifically do not require any special cuts and/or do not require extra components to form tabs or flaps.
  • bag 18 can be filled with the desired food product as current bags are filled for example of the type shown and described in U.S. Patent 4,450,180. After filling, strips 34 and 36 can be adhered to walls 20, 22, and 26 utilizing standard equipment presently utilized to form the peelable seal of current bags. It of course should be appreciated that the particular manner of manufacture and filling of bag 18 can be done in a variety of ways and manners such as but not limited to the example set forth above.
  • bag 18 is popcorn kernels and the popped kernels have been generally indicated by the reference numeral 40, having been popped when in the microwave oven.
  • bag 18 in a collapsed condition is placed in a microwave oven with bottom wall 20 resting upon the bottom surface of the oven cavity.
  • susceptor pad 30 converts microwave energy into heat, with the heat and remaining microwave energy causing the popping of the kernels and the creation of water vapor.
  • bag 18 is formed of a single layer of greaseproof paper having a thickness allowing the single layer to be flexed by the popping of the popcorn kernels and also providing adequate greaseproof properties in storage, transportation, or cooking throughout the thickness of the paper to prevent wicking and leaking of grease or oil through the single layer. It has been discovered that by the selection of raw fibers as well as highly refining the raw fibers in the process of making the paper, the fibers themselves in the paper are resistant to grease staining and gives the paper greaseproof properties even when folded or creased.
  • the highly refined fibers have less tendency to fracture revealing uncoated fiber ends which absorb grease, but rather the bonds between the fibers tend to stretch, bend, or fracture and thus not revealing fractured fiber ends.
  • Specifically raw fibers selected from the group of 100% chemical softwood pulp such as 100% bleached Kraft softwoods and which are highly refined to a freeness level in the order of 150 to 250 cubic centimeters have been found to provide adequate greaseproof properties when formed into paper having a basis weight of 11.5 kg. (25 lb.)/ream to 20.5 kg. (45 lb.)/ream and in the most preferred form in the order of 16 kg. (35 lb.)/ream.
  • bag 18 is formed of a single layer of paper, Code No. 220-3510 produced by Rhinelander Paper Company, 515 W. Davenport Street, Rhinelander, Wisconsin 54501.
  • bag 18 according to the teachings of the present invention is much more flexible than current conventional popcorn bags because of its single layer and elimination of the laminating adhesive. Further, benefits of the single layer of paper softening during microwave cooking due to heat and steam give bag 18 more flexibility and less stiffness. Due to this increased flexibility, bag 18 according to the preferred teachings of the present invention inflates or expands from its collapsed, storage condition to an inflated or expanded condition having a larger interior volume than the same size current conventional popcorn bags, with bag 18 of the present invention allowing the popped kernels to pop with greater volume.
  • the single layer forming bag 18 provides economic advantages over current multilaminate popcorn bags by reducing the amount of paper material used for each bag 18 and also by eliminating the adhesive and the laminating steps required in multilaminate popcorn bags. Additionally, with the reduction in the amount of paper material used for each bag 18 and the elimination of the laminating adhesive, less package material in the form of garbage after the consumption of the popcorn is required to be disposed of resulting in environmental advantages over multilaminate popcorn bags.
  • Bag 18 provides an added option of provisions for built-in grease leak protection at the creases.
  • grease protectors 42a, 42b, 42c, and 42d are provided located inside of bag 18 for sealing bottom wall 20 to pleat 26a, top wall 22 to pleat 26b, bottom wall 20 to pleat 26c, and top wall 22 to pleat 26d, respectively, adjacent to their respective connecting edges, with grease protectors 42a, 42b, 42c, and 42d sticking or joining the inside surfaces of bottom wall 20 to pleat 26a, top wall 22 to pleat 26b, bottom wall 20 to pleat 26c, and top wall 22 to pleat 26d, respectively, together adjacent to their respective connecting edges.
  • grease protectors 44a and 44b are provided located outside of bag 18 for sealing pleat 26a to pleat 26b and pleat 26c to pleat 26d, respectively, adjacent to their respective connecting edges, with grease protectors 44a and 44b sticking or joining the outside surfaces of pleat 26a to pleat 26b and pleat 26c to pleat 26d, respectively, together adjacent to their respective connecting edges.
  • grease protectors 42a, 42b, 42c, 42d, 44a and 44b are applied during the printing process in the form of strips of preapplied heat seal adhesive on one or both sides of the connecting edges or of strips of preapplied cohesive on both sides of the connecting edges, such as Duraset 12, or equivalent.
  • Grease protectors 42a, 42b, 42c, 42d, 44a and 44b are selected to actually seal the paper forming bag 18 together just above and adjacent the connecting edges.
  • Grease protectors 42a, 42b, 42c, and 42d actually block the flow of grease to the folded or creased areas of the connecting edges, and grease protectors 44a and 44b block the flow of grease away from the folded or creased areas of the connecting edges, thus preventing grease wicking or leaking.
  • the adhesive or cohesive forming grease protectors 42a, 42b, 42c, 42d, 44a and 44b is selected to release or peel during expansion or inflation of bag 18 during microwave cooking such that the expanded or inflated volume of bag 18 will not be reduced utilizing grease protectors 42a, 42b, 42c, 42d, 44a and 44b from the expanded or inflated volume of bag 18 not utilizing grease protectors 42a, 42b, 42c, 42d, 44a and 44b.
  • grease protectors 42a, 42b, 42c, 42d, 44a and 44b provide an added grease barrier at the folded and creased areas where grease wicking and leaking are especially a problem, with grease protectors 42a, 42b, 42c, 42d, 44a, and 44b allowing minimization of the material and/or number of layers forming bag 18 where grease wicking and leaking are not such a problem.

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

Claims (16)

  1. Emballage expansible en papier pour pop-corn destiné à maintenir des grains de pop-corn et de la graisse ou de l'huile pour les faire éclater dans un four à micro-ondes comprenant, en combinaison : un sac (18) ayant un volume intérieur et une extrémité fermée (28) qui peut être ouverte par le consommateur après la cuisson par micro-ondes, des moyens suscepteurs (30) pour convertir l'énergie micro-onde en chaleur qui s'étendent sur une partie du sac (18), les grains de pop-corn et la graisse ou l'huile recouvrant de manière générale les moyens (30) suscepteurs pendant la cuisson par micro-ondes, caractérisé en ce que le sac (18) est formé d'une couche unique de papier étanche à la graisse qui a une épaisseur permettant à la couche unique d'être déformée par l'éclatement des grains de pop-corn et évitant ainsi l'effet de mèche et la fuite de grasse ou d'huile au travers de la couche unique.
  2. Emballage selon la revendication 1, dans lequel le papier étanche à la grasse est formé de fibres crues qui sont hautement affinées.
  3. Emballage selon la revendication 2, dans lequel les fibres crues sont choisies dans le groupe comprenant les pâtes de bois tendre 100% chimique.
  4. Emballage selon l'une quelconque des revendications précédentes, dans lequel le papier étanche à la graisse a une masse de base s'étendant dans la plage d'environ 11,5kg (25lb)/feuille jusqu'à 20,5kg (45lb)/feuille.
  5. Emballage selon l'une quelconque des revendications précédentes, dans lequel le papier étanche à la graisse a une masse de base de l'ordre de 16kg (35lb) /feuille.
  6. Emballage selon l'une quelconque des revendications précédentes, dans lequel le sac (18) est expansible, le volume intérieur étant défini par au moins des première et deuxième parois (20, 22, 26) reliées ensemble au niveau de premiers bords, chacune des première et deuxième parois (20, 22, 26) ayant des première et deuxième surfaces, le sac (18) ayant un état rétracté et un état dilaté, le volume intérieur du sac (18) augmentant lorsque le sac (18) se dilate depuis l'état rétracté vers l'état dilaté, les première et deuxième parois (20, 22, 26), étant pliées autour des premiers bords avec les premières surfaces se recouvrant l'une et l'autre dans l'état rétracté, les première et deuxième parois (20, 22, 26) s'étendant depuis les premiers bords avec les premières surfaces espacées l'une de l'autre dans l'état dilaté, et l'emballage comprenant en outre des moyens (42, 44) pour sceller les premières surfaces ensemble à proximité des premiers bords pour éviter que la graisse ou l'huile subisse un effet de mèche ou fuie depuis le volume intérieur du sac (18).
  7. Emballage selon la revendication 6, dans lequel les moyens (42, 44) de scellement sont pelables lorsque le sac (18) se dilate depuis l'état rétracté vers l'état dilaté.
  8. Emballage selon la revendication 6 ou 7, dans lequel les moyens (42, 44) de scellement comprennent un adhésif ou un cohésif appliqué à la ou aux premières surfaces de la première et de la deuxième parois (20, 22, 26) à proximité des premiers bords.
  9. Emballage selon l'une quelconque des revendications 6 à 8, dans lequel les premières surfaces sont situées à l'intérieur du sac (18).
  10. Emballage selon l'une quelconque des revendications 6 à 8, dans lequel les premières surfaces sont situées à l'extérieur du sac (18).
  11. Emballage selon l'une quelconque des revendications 6 à 10, dans lequel le sac (18) est scellé, le sac (18) se dilatant depuis l'état rétracté vers l'état dilaté pendant la cuisson du produit alimentaire incluant la graisse ou l'huile.
  12. Emballage selon l'une quelconque des revendications 1 à 5, dans lequel le sac (18) est expansible, le volume intérieur étant défini par au moins une paroi inférieure (20), une paroi supérieure (22), et au moins une première paroi latérale (26) qui s'étend entre les parois supérieure et inférieure (20, 22), les parois latérale, inférieure et supérieure (20, 22, 26) comprenant des premières et deuxièmes extrémités, la première paroi latérale (26) comprenant des premier et deuxième replis (26a, 26b), les replis (26a, 26b) étant reliés ensemble au niveau de premiers bords et le premier repli (26a) ayant un deuxième bord opposé relié à la paroi inférieure (20), le deuxième repli (26b) ayant un troisième bord opposé relié à la paroi supérieure (22), le sac (18) comprenant en outre une paroi d'extrémité (24) au niveau des premières extrémités des parois latérale, inférieure et supérieure (20, 22, 26), le suscepteur (30) s'étendant sur une partie de la paroi inférieure (20) espacée des première et deuxième extrémités de la paroi inférieure (20), et des moyens (34, 36) pour fermer les deuxièmes extrémités des parois latérales, inférieure et supérieure (20, 22, 26) et pour permettre à un consommateur d'ouvrir l'emballage (18) après la cuisson par micro-ondes, l'emballage comprenant en outre des moyens (42a) à l'intérieur du sac (18) pour sceller le premier repli (26a) à la paroi inférieure (20) à proximité du deuxième bord, des moyens (42b) à l'intérieur du sac (18) pour sceller le deuxième repli (26b) à la paroi supérieure (22) à proximité du troisième bord, les moyens (42a, 42b) de scellement empêchant la graisse ou l'huile de subir un effet de mèche ou de fuir depuis l'intérieur du sac (18) au travers des bords.
  13. Emballage selon la revendication 12, dans lequel les moyens (42a, 42b) de scellement sont pelables pendant la cuisson par micro-ondes.
  14. Emballage selon la revendication 12 ou 13, dans lequel les moyens (42a, 42b) de scellement comprennent un adhésif ou un cohésif appliqué aux bords.
  15. Emballage selon l'une quelconque des revendications 12 à 14, dans lequel le sac (18) comprend une deuxième paroi latérale (26) qui s'étend entre les parois inférieure et supérieure (20, 22) et opposée à la première paroi latérale (26), la deuxième paroi latérale (26) comprenant au moins des troisième et quatrième replis (26c, 26d), les troisième et quatrième replis (26c, 26d) étant reliés ensemble au niveau de quatrièmes bords et le troisième repli (26c) comprenant un cinquième bord opposé relié à la paroi inférieure (20), le quatrième repli (26d) ayant un sixième bord opposé relié à la paroi supérieure (22), des moyens (42c) prévus à l'intérieur du sac (18) pour sceller le troisième repli (26c) à la paroi inférieure (22) à proximité du cinquième bord, des moyens (42d) à l'intérieur du sac (18) pour sceller le quatrième repli (26d) à la paroi supérieure (22) à proximité du sixième bord, et des moyens (44b) à l'extérieur du sac (18) pour sceller le troisième repli (26c) au quatrième repli (26d) à proximité des quatrièmes bords.
  16. Emballage selon l'une quelconque des revendications 12 à 15, comprenant en outre, en combinaison : des moyens (44a) à l'extérieur du sac (18) pour sceller le premier repli (26a) au deuxième repli (26b) à proximité des premiers bords.
EP93904767A 1992-02-06 1993-01-29 Emballage de pop-corn monocouche, etanche a la graisse et flexible Expired - Lifetime EP0624142B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US83418592A 1992-02-06 1992-02-06
US834185 1992-02-06
PCT/US1993/000849 WO1993015976A1 (fr) 1992-02-06 1993-01-29 Emballage de pop-corn monocouche, etanche a la graisse et flexible

Publications (2)

Publication Number Publication Date
EP0624142A1 EP0624142A1 (fr) 1994-11-17
EP0624142B1 true EP0624142B1 (fr) 1998-07-22

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Application Number Title Priority Date Filing Date
EP93904767A Expired - Lifetime EP0624142B1 (fr) 1992-02-06 1993-01-29 Emballage de pop-corn monocouche, etanche a la graisse et flexible

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EP (1) EP0624142B1 (fr)
AU (1) AU3601393A (fr)
CA (1) CA2129110C (fr)
DE (1) DE69319892T2 (fr)
WO (1) WO1993015976A1 (fr)

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Publication number Priority date Publication date Assignee Title
ZA945755B (en) * 1993-08-11 1995-03-15 Metal Box Co South Africa The packaging of articles
WO1995015888A2 (fr) * 1993-12-10 1995-06-15 General Mills, Inc. Appareil pour plier, remplir et fermer hermetiquement des sachets a l'aide d'un dispositif de serrage pour tenir le sachet pendant ces operations
US5463848A (en) * 1993-12-10 1995-11-07 General Mills, Inc. Apparatus for folding and ejecting microwave popcorn bags from a fixture
US5507132A (en) * 1993-12-10 1996-04-16 General Mills, Inc. Apparatus for opening microwave popcorn bags
US5480372A (en) * 1993-12-10 1996-01-02 General Mills, Inc. Apparatus for folding and loading microwave popcorn bags into a fixture
US5463845A (en) * 1993-12-10 1995-11-07 General Mills, Inc. Apparatus for folding, filling, and sealing microwave popcorn bags
GB0121623D0 (en) 2001-09-07 2001-10-31 Eatwell U K Ltd Packaging
US7547649B2 (en) 2003-12-08 2009-06-16 Wausau Paper Specialty Products, Llc Laminate product, method for manufacturing, and article
US7067781B2 (en) 2003-12-08 2006-06-27 Wausau Paper Corp. Single ply paper product, method for manufacturing, and article
US7176151B2 (en) 2003-12-08 2007-02-13 Wausau Paper Corp. Laminate product, method for manufacturing, and article

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Publication number Priority date Publication date Assignee Title
US4038425A (en) * 1974-09-25 1977-07-26 The Pillsbury Company Combined popping and shipping package for popcorn
US4571337A (en) * 1984-05-10 1986-02-18 Hunt-Wesson Foods, Inc. Container and popcorn ingredient for microwave use
US4892744A (en) * 1987-02-11 1990-01-09 Borden, Inc. Single-pleated microwave popcorn package
US5044777A (en) * 1990-10-26 1991-09-03 Golden Valley Microwave Foods Inc. Flat-faced package for improving the microwave popping of corn
WO1992022475A1 (fr) * 1991-06-14 1992-12-23 Hunt-Wesson, Inc. Produit de pop-corn prepare aux micro-ondes

Also Published As

Publication number Publication date
DE69319892D1 (de) 1998-08-27
CA2129110A1 (fr) 1993-08-19
EP0624142A1 (fr) 1994-11-17
CA2129110C (fr) 2005-01-25
DE69319892T2 (de) 1999-03-18
WO1993015976A1 (fr) 1993-08-19
AU3601393A (en) 1993-09-03

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