WO2008056690A1 - Package body for microwave oven cooking - Google Patents

Package body for microwave oven cooking Download PDF

Info

Publication number
WO2008056690A1
WO2008056690A1 PCT/JP2007/071612 JP2007071612W WO2008056690A1 WO 2008056690 A1 WO2008056690 A1 WO 2008056690A1 JP 2007071612 W JP2007071612 W JP 2007071612W WO 2008056690 A1 WO2008056690 A1 WO 2008056690A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal
microwave oven
container
package
heat
Prior art date
Application number
PCT/JP2007/071612
Other languages
French (fr)
Japanese (ja)
Inventor
Masahiro Hongou
Hisakazu Yasumuro
Kengo Matsumoto
Taketo Sakurai
Original Assignee
Toyo Seikan Kaisha, Ltd.
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 Toyo Seikan Kaisha, Ltd. filed Critical Toyo Seikan Kaisha, Ltd.
Priority to JP2008543098A priority Critical patent/JP4924613B2/en
Publication of WO2008056690A1 publication Critical patent/WO2008056690A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • 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

Definitions

  • the present invention relates to a microwave cooking packaging body in which a synthetic resin container body having a flange portion is filled with food such as cooked rice, and a lid body is heat-sealed and sealed to the flange portion.
  • various microwave oven packaging packages are known in which retort food, frozen food, and the like are stored in a synthetic resin sealed container and cooked in an microwave oven when eaten.
  • the internal pressure of the packages may increase due to water vapor generated from food stored in the container, and the packages may burst.
  • food is scattered, or soil the microwave oven, there is a fear force s harm burns or the like to the human body.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 62-235080
  • Patent Document 2 Japanese Patent Laid-Open No. 11 171261
  • Patent Document 3 Japanese Patent Laid-Open No. 2000-62858 [0005]
  • a sealing heat seal is applied, and then the entire circumference of the flange portion including the heat-sealed portion is provided.
  • knurled seal it is widely practiced to prevent the outer end of the heat-sealed lid from being turned up (for example, see Patent Document 4).
  • Patent Document 4 JP-A-3-29769
  • the steam seal portion is formed by providing the heat seal portion with a protruding portion that protrudes inward of the container.
  • the objective is to eliminate the problems peculiar to microwave oven packaging with knurled seals. That is, the present invention prevents a roll-up of the outer end of the lid body heat-sealed to the flange portion, and the microwave oven cooking package in which the lid body automatically opens due to an increase in pressure in the container during microwave cooking. We will make it easy to provide the body at low cost.
  • a microwave oven packaging body filled with the contents of a synthetic resin container body with a flange and heat sealed with a lid on the flange to seal the heat seal.
  • a steam vent seal is formed by providing an urging force and a protruding portion in the inner direction of the container, At least one auxiliary seal part is provided by heat-sealing the flange part and the lid body at the part from the steam release seal part to the outer edge of the container, and in areas other than the outer part and the inner part of the steam release seal part.
  • the feature is that an independent recess is provided on the inside and outside of the heat seal part of the flange part, which is the steam release seal part, to form a directional force and a protruding part in the inner direction of the container 1 or 2 Packaging for microwave oven according to 1.
  • auxiliary seal portion is formed as a spot-like spot seal.
  • the auxiliary seal portion is a seal portion that does not participate in the hermetic seal of the contents stored in the container.
  • the knurled seal is a seal in which the seal mark has a grid pattern, and the area ratio of the seal part to the non-seal part in the knurled part is about 1/9 to 6/4. .
  • the length of one side of the grid is about 0.3 to 1 mm and the pitch is about 0.7 to 1. Omm.
  • the knurled seal is applied under such a condition that the seal portion is sealed to such an extent that it does not peel off. For example, using a sheath tool such as that shown in Fig. 8, 170 to 240 ° C:;! To 3 less, seat surface pressure 10 to 40kg / It applied by heat-sealing in cm 2.
  • the present invention it is possible to prevent the outer end of the lid body of the microwave cooking packaging body from being turned up after the container body having the flange portion is filled with the contents and then the lid body is heat sealed. In the distribution / sales process, it is possible to prevent foreign matter from entering between the lid and the flange. In addition, when cooking with a microwave oven, the lid can surely automatically open from the steam vent seal portion due to the pressure increase in the container, and smooth discharge of steam via the steam vent seal portion can be realized. .
  • FIG. 1 is a plan view showing an example of a microwave oven cooking package according to the present invention.
  • FIG. 2 is a front view of the package of FIG.
  • FIG. 3 is a partially enlarged view of a protruding portion of a heat seal portion formed on a flange portion of the package of FIG. 1.
  • FIG. 4 is a schematic cross-sectional view taken along line AA of FIG. 3 when the package of FIG. 1 is cooked with a microwave oven.
  • FIG. 5 is a schematic cross-sectional view taken along the line BB of FIG. 3 when the package of FIG. 1 is cooked with a microwave oven.
  • FIG. 6 is a partially enlarged view of a flange portion forming a steam release seal portion before heat-sealing the lid in the package of FIG.
  • FIG. 7 is a partial enlarged view of a sealing tool used when heat-sealing the lid body to the flange portion of the container body.
  • FIG. 8 is a partially enlarged view of a sealing tool used when a knurled seal is applied to the flange portion of the microwave oven packaging body of the present invention.
  • FIG. 9 is a partially enlarged view of a steam vent seal part of a package showing another example of the microwave cooking package of the present invention.
  • Fig. 10 is a partially enlarged view of a steam vent seal portion of the package, showing another example of the microwave oven package of the present invention.
  • FIG. 11 is a schematic diagram showing another example of the microwave oven cooking package according to the present invention. It is the elements on larger scale of a blank seal part.
  • Fig. 12 is a partially enlarged view of a steam vent seal portion of the package, showing another example of the microwave cooking package of the present invention.
  • FIG. 13 is a plan view showing an example of a conventional microwave cooking package.
  • FIG. 14 is a plan view showing another example of the microwave oven cooking package of the present invention.
  • FIG. 15 is a front view of the package of FIG.
  • FIG. 16 is a partially enlarged view of a steam vent seal portion of a package, showing another example of the microwave cooking package of the present invention.
  • FIG. 17 is a partially enlarged view of a steam vent seal portion of a package, showing another example of the microwave oven package of the present invention.
  • FIG. 18 is a partially enlarged view of a steam vent seal portion of a package, showing another example of the microwave oven package of the present invention.
  • a plastic material having heat-sealing properties which is usually used for manufacturing packaging containers. It is.
  • plastic materials include single-layer films and sheets made of a thermoplastic resin having heat sealability, and multilayer films and sheets in which a thermoplastic resin having heat sealability is laminated with other thermoplastic resins. Etc.
  • plastic material having such heat sealability examples include known low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene ethylene copolymer, ethylene acetate butyl copolymer, Olefin resins such as olefin resins graft-modified with ethylenically unsaturated carboxylic acids or anhydrides thereof; polyamides or copolyamide resins having relatively low melting points or low softening points; polyesters or copolyester resins; polycarbonate resins, etc. are used.
  • the plastic material having such heat sealability include known low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene ethylene copolymer, ethylene acetate butyl copolymer, Olefin resins such as olefin resins graft-modified with ethylenically unsaturated carboxylic acids or anhydrides thereof; polyamides or copo
  • thermoplastic resin with or without heat sealability various barrier films, and an oxygen-absorbing resin are used. be able to.
  • thermoplastic resins examples include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene 1, crystalline poly-4-methylpentene 1, low-medium or high-density polyethylene, and ethylene acetate butyl copolymer (EVA).
  • Polyolefins such as EV A saponified product, ethylene ethyl acrylate copolymer (EEA), ionically cross-linked olefin copolymer (ionomer); aromatic butyl copolymers such as polystyrene and styrene butadiene copolymer; Halogenated butyl polymer such as vinylidene chloride resin; polyacrylic resin; nitrile polymer such as acrylonitrile-styrene copolymer, acrylonitrile-toluene styrene butadiene copolymer; polyethylene terephthalate, polytetramethylene terephthalate, etc.
  • ESA ethylene ethyl acrylate copolymer
  • ionomer ionically cross-linked olefin copolymer
  • aromatic butyl copolymers such as polystyrene and styrene butadiene cop
  • any film composed of a known thermoplastic resin having oxygen barrier properties can be used.
  • resins include, for example, ethylene butyl alcohol copolymer, polyamide, polyvinylidene chloride resin, poly butyl. Alcohol, fluororesin, etc. are listed, but they may not generate toxic gas during incineration! /, Does not contain chlorine! /, And it is preferable to use resin.
  • a particularly preferable oxygen barrier resin is an ethylene acetate butyl copolymer having an ethylene content of 20 to 60 mol%, particularly 25 to 50 mol%, and a saponification degree of 96 mol% or more, particularly 99 mol. % Of the saponified copolymer obtained by saponification such that the number of amide groups per 100 carbon atoms is 5-50, especially 6-20.
  • Polyamides in a range for example, nylon 6, nylon 6, 6, nylon 6/6, 6 copolymer, metaxylylene adipamide (MX6), nylon 6, 10, nylon 11, nylon 12, Nylon 13 etc. are mentioned.
  • barrier films can be used alone or in combination of two or more.
  • the oxygen-absorbing resin (1) a resin having an oxygen-absorbing property is used. And force S.
  • the thermoplastic resin constituting the oxygen-absorbing resin composition (2) any of a thermoplastic resin having an oxygen barrier property without limitation and a thermoplastic resin having no oxygen barrier property can be used.
  • the thermoplastic resin constituting the oxygen-absorbing resin composition (2) when the resin itself has an oxygen-absorbing property or oxygen-barrier property, a synergistic effect with the oxygen-absorbing effect by the oxygen-absorbing agent is caused. It is preferable because oxygen can be effectively prevented from entering the container.
  • Examples of the resin itself having oxygen absorptivity include those utilizing an oxidation reaction of the resin.
  • polybutadiene, polyisoprene, polypropylene, ethylene carbon monoxide copolymers; 6-nylon, 12-nylon, metaxylylenediamine (MX) for oxidizable organic materials such as polyamides such as nylon
  • MX metaxylylenediamine
  • organic acid salts containing transition metals such as cobalt, zinc, and copper
  • photosensitizers such as benzophenone, acetophenone, and ketones
  • any oxygen absorbent conventionally used for this kind of application can be used.
  • an oxygen absorbent that is reducible and that is substantially insoluble in water is preferred.
  • oxygen absorbers include reducing metal powders such as reducing iron, reducing zinc, and reducing tin powders; low metal oxides such as FeO and Fe 2 O;
  • Reducing metal compounds such as those containing as a main component one or a combination of two or more of iron carbide, potassium iron, iron carbonyl, ferrous hydroxide and the like.
  • oxygen absorber for example, iron oxide obtained in the steel manufacturing process is reduced with a coata, and the resulting sponge iron is pulverized and then subjected to finish reduction in hydrogen gas or decomposed ammonia gas. Reduced iron performed; reducing iron obtained by electrolytically depositing iron from an aqueous iron chloride solution obtained in the steel pickling step, and then performing final reduction after grinding.
  • oxygen absorbers may be used as required in alkali metal, alkaline earth metal hydroxide, carbonate, sulfite, thiosulfate, triphosphate, diphosphate, organic acid salt, halogenate. It can also be used in combination with an oxidation accelerator composed of an electrolyte such as an oxide, or an auxiliary agent such as activated carbon, activated alumina or activated clay. Particularly preferred examples of the oxidation accelerator include sodium chloride, calcium chloride, and combinations thereof.
  • the blending ratio of both is 99 to 80 parts by weight of reducing iron and an oxidation accelerator, with the total weight being 100 parts by weight;! To 20 parts by weight, reducing iron is preferably 98 to 90 parts by weight and oxidation accelerator 2 to 10 parts by weight.
  • oxygen absorbers include polymer compounds having a polyvalent phenol in the skeleton, such as a polyhydric phenol-containing phenol-aldehyde resin. Further, ascorbic acid, erythorbic acid, tocopherols and salts thereof, which are water-soluble substances, can be suitably used. Of these oxygen-absorbing substances, reduced iron and ascorbic acid compounds are particularly preferred.
  • a resin in which the above resin itself has oxygen absorbability may be blended in the thermoplastic resin as an oxygen absorbent.
  • oxygen absorbers generally have an average particle size of 50 m or less, particularly preferably 30 m or less.
  • the oxygen absorbent When the oxygen absorbent needs to be transparent or translucent, it preferably has an average particle size of 10 m or less, particularly 5 m or less.
  • the oxygen absorbent is preferably blended in the above resin in a proportion of 1 to 70% by weight, particularly 5 to 30% by weight.
  • Contents such as cooked rice filled in the container according to the present invention are deteriorated by germs, mold and oxygen, and the flavor tends to be lowered. Therefore, in the present invention, it is preferable to use a multilayer structure including various barrier films and an oxygen-absorbing resin layer as the constituent material of the container body and the lid. It is possible to intervene an adhesive layer between the layers constituting the laminate as necessary.
  • adhesives such as polyolefin adhesives modified with acid anhydrides such as maleic anhydride, polyurethane adhesives, and the like that are usually used as adhesives for laminates. Can also be used.
  • PP polypropylene
  • EVO ethylene butyl acetate copolymer saponified product
  • oxygen-absorbing resin layer for example, polyolefin containing reducing iron and oxidation accelerator
  • nylon (NY) / EVOH / PP system for example, in order from the outer layer side of the lid body, nylon (NY) / EVOH / PP system.
  • Polyethylene (PE) system composite material NY / EVO H / Linear Low Density Polyethylene (LLDPE); Evaporated Polyethylene Terephthalate (PET) / NY / PP System.
  • PE Composite Material Evaporated PET / NY / LLDPE; Evaporated PET / NY / Polybutylene Terephthalate ( ⁇ ) Resin Etc.
  • FIG. 1-7 is a figure which shows one example of the packaging body for microwave oven cooking of this invention.
  • FIG. 1 is a plan view of the packaging body
  • FIG. 2 is a front view of the packaging body
  • FIG. 3 is a partially enlarged view of the protruding portion of the heat seal portion formed on the flange portion of the packaging body.
  • FIG. 4 is a schematic cross-sectional view taken along the line in FIG. 3 when the package is cooked in a microwave oven.
  • Fig. 5 shows a schematic cross-sectional view along the shoreline of Fig. 3 when the package is cooked in a microwave oven.
  • FIG. 6 shows a partially enlarged view of the flange portion that forms the protruding portion of the steam release seal portion before heat sealing the lid.
  • FIG. 1 is a plan view of the packaging body
  • FIG. 2 is a front view of the packaging body
  • FIG. 3 is a partially enlarged view of the protruding portion of the heat seal portion formed on the flange portion of
  • FIG. 7 shows a partially enlarged view of a sealing tool used when heat-sealing the lid to the flange portion.
  • Fig. 8 shows a partially enlarged view of the sealing surface of the sealing tool used when the knurled seal is applied to the flange part where the lid is heat-sealed.
  • the microwave cooking packaging 1 includes a rectangular container body 3 having a flange 2 filled with food (not shown) such as cooked rice, and the lid 4 is heat-sealed to the flange 2. It is sealed.
  • the heat seal part 5 is sandwiched by a part of the flange part, and independent recesses 6 and 7 are provided on the inside and outside of the heat seal part 5, respectively.
  • a V-shaped protruding portion 8 is formed in the inner direction of the container to form a steam vent seal portion.
  • the flange portion 2 and the lid body 4 are heat-sealed in a dot shape in the concave portion 7 outside the steam release seal portion 8, thereby forming a single circular shape as an auxiliary seal portion.
  • the heat seal portion 5 is projected in a V shape toward the outside of the container, and the lid body 4 is opened after cooking by the microwave oven.
  • the opening portion 12 is formed.
  • knurling seals 13 and 13 are applied to the inside and outside of the heat seal portion 5 other than the outer recess 7 and the inner recess 6 of the steam release seal portion 8 to prevent the lid 4 from turning up. ing.
  • the knurled seal 13 is provided at a portion 14 from the opening 12 to the outer end of the container in order to make it easy to open the lid 4 from the opening 12 after being controlled by a microwave oven! /, What! /
  • the steam release seal portion 8 uses the sealing tool 10 shown in Fig. 7 by placing the lid body 4 on the container body 3 provided with the recesses 6 and 7 in the corner portion of the flange portion 2 shown in Fig. 6. Then, forming force S can be achieved by heat sealing.
  • the auxiliary seal portion 9 leaves a spot-like portion that is not partially recessed, and uses a sealing tool 10 with a flat sealing surface to remove the steam-sealed seal portion 8. Can be provided at the same time as forming S.
  • the concave portion 7 is subjected to the concave portion entirely without leaving the portion corresponding to the auxiliary seal portion 9, and the portion corresponding to the auxiliary seal portion 9 of the sealing tool 10 is partially raised to perform heat sealing.
  • the auxiliary seal portion 9 may be formed.
  • the cover 4 is sandwiched between the portion sandwiched between the recesses 6 and 7 of the flange portion (scheduled heat seal portion) and the sealing tool 10 and heat sealed, so that the protrusion 8 and the heat seal portion 5
  • the auxiliary seal portion 9 is formed at the same time. Therefore, unlike the conventional microwave cooking package, the protruding portion 8 can be formed without misalignment without the need for precise alignment when forming the protruding portion.
  • the depths of the recesses 6 and 7 provided in the flange portion 2 may be the same depth or different depths.
  • the depth of the recess is usually about 0.05 to 3 mm, particularly preferably about 0.1 to 0.5 mm.
  • the seal width of the protruding portion 8 can be the same as or narrower than that of the peripheral heat seal portion 5, and is preferably about 0.5 to 5 mm, particularly preferably about 1 to 3 mm.
  • the seal strength of the protruding portion 8 is preferably about 5 to 30 N / 15 mm. This place The combined seal strength means a value obtained by converting the seal width of the protrusion 8 into a width of 15 mm.
  • the auxiliary seal part 9 is also provided on the inner part 6 of the steam release seal part 8 in order to improve the sealing performance and the appearance of the package, which is not limited to the outer part 7 of the steam release seal part 8 alone. You can.
  • the auxiliary seal portion 9 is provided on the inner portion 6, it is preferable to minimize the size and number of seals so as not to hinder the discharge of steam.
  • the size of the auxiliary seal portion 9 can be appropriately selected according to the size of the container.
  • the diameter can be, for example, 5 mm or less, usually about 0.3 to 2 mm.
  • the total number thereof is 1 to about 10; preferably 5 or less.
  • the shape and arrangement of the auxiliary seal part can be arbitrarily selected from a circular shape, a triangular shape, a quadrangular shape, an opal shape, and the like, which are not particularly limited.
  • the auxiliary seal portion may be formed as a seal portion having a certain area.
  • the auxiliary seal portion may have a seal form similar to the knurled seal portion. Monkey.
  • the knurled seal 13 provided on the microwave oven packaging body is sealed by heat-sealing the flange portion 2 and the lid body 4 of the container body, and then a plurality of protrusions arranged in a grid pattern on the seal surface. It can be formed using a sealing tool 18 having a part 20 (see FIG. 8).
  • the size of the convex portion 20 can be appropriately selected according to the size of the container, but usually one side of the convex portion is about 0.3 to 1 mm and the pitch is about 0.7 to 1. It is preferably about 0 mm.
  • the position where the knurled seal 13 is provided is usually provided on the entire surface of the flange portion 2, that is, on the inner side and the outer side including the peripheral heat seal portion 5.
  • the knurled seal may be applied in a form in which the knurled seal may be applied to the entire surface of the flange portion 2 including the heat seal portion 5 or the heat seal portion 5 may be omitted.
  • a knurled seal may be provided only outside the heat seal portion 5.
  • the outer end of the lid body of the microwave oven cooking package 1, which is sealed by heat-sealing the lid body 4 to the flange portion 2, is prevented from turning up. As a result, it is possible to prevent foreign matter from entering between the lid 4 and the flange 2 in the distribution / sales process.
  • the microwave cooking package 1 was cooked in a microwave oven, it was filled in a container.
  • the internal pressure of the container rises due to water vapor generated from food such as cooked rice, and the lid 4 expands outward.
  • the heat seal portion starts to peel from the tip portion protruding in a U-shape or V-shape toward the inside of the container (see FIG. 4).
  • the heat seal part 5 does not peel at other parts of the heat seal part 5, the internal pressure of the container is maintained, and the food such as cooked rice filled in the container is sufficiently steamed to improve the taste. To do.
  • the heat seal portion opens. Then, high-temperature steam blows out from the opening, and the internal pressure in the container is lowered, and cooking of the contents is completed.
  • the package body can be taken out of the microwave oven, and the lid body 4 can be opened by hand from the opening portion 12 provided at the corner portion facing the protruding portion 8, and the contents can be eaten as it is.
  • high-temperature water vapor is blown out from the projecting portion 8 that is opened.
  • the lid 4 can be safely opened.
  • the package for microwave oven cooking according to the present invention can maintain the internal pressure of the container to some extent during the protrusion 8 until the internal pressure of the container decreases after the heat seal part automatically opens. The contents can be given a sufficient steaming effect.
  • Fig. 9 is a partially enlarged view of a steam release seal portion of the package, showing another example of the microwave cooking package of the present invention.
  • Fig. 10 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
  • a total of ten small spot-like auxiliary seal portions 9 are provided in the concave portion 7 outside the steam release seal portion 8.
  • the other structure of the package 21 is the same as that of the package 1 in FIG.
  • FIG. 11 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
  • the microwave oven cooking packaging 31 one slightly deformed oval auxiliary seal portion 9 is provided in the concave portion 7 outside the steam release seal portion 8.
  • Other configurations of the package 31 are the same as those of the package 1 in FIG.
  • FIG. 12 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave cooking package of the present invention.
  • auxiliary seal 9 is provided in the recess 7 outside the steam release seal 8, and two ellipses are also provided in the recess 6 inside the steam release seal 8. Auxiliary seals 9 and 9 are provided.
  • Other configurations of the package 41 are the same as those of the package 1 in FIG.
  • FIG. 13 is a plan view showing an example of a conventional microwave cooking package.
  • a V-shaped protruding portion 8 directed toward the inner side of the container is formed in the heat seal portion 5 to form a steam release seal portion.
  • the heat seal portion 5 is projected in a V shape toward the outer side of the container, and an opening portion for opening the lid 4 after cooking with a microwave oven. 12 is formed.
  • the knurled seals 13 and 13 are applied to the inner and outer sides of the heat seal portion 5 over the entire circumference to prevent the lid body 4 from turning up.
  • This knurled seal 13 is provided on a portion 14 extending from the opening 12 to the outer end of the container in order to make it easy to open the lid 4 from the opening 12 after the package 51 is cooked in a microwave oven. Is not provided.
  • FIG. 14 and FIG. 15 are diagrams showing another example of the microwave oven cooking package according to the present invention.
  • FIG. 14 is a plan view of the package
  • FIG. 15 is a front view of the package.
  • This microwave oven cooking packaging body 61 has a cup-shaped container body 3 having a flange portion 2 with a circular cross section filled with food (not shown) such as cooked rice, and the lid portion 4 is attached to the flange portion 2 with a heat sheet. And sealed.
  • the flange portion 2 is provided with a pair of wide portions 3 2 and 33 at opposing positions.
  • One wide portion 32 is provided with recesses 6 and 7 sandwiching the heat seal portion 5 so that the heat seal portion 5 is provided with a V-shaped protruding portion 8 in the direction toward the inside of the container, and a steam release seal. Part 8 is formed.
  • one circular auxiliary seal portion 9 is provided in the concave portion 7 outside the steam release seal portion 8.
  • the heat seal portion 5 protrudes in a V shape toward the outer side of the container, thereby forming an opening portion 12 for opening the lid 4.
  • Fig. 16 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
  • a substantially triangular auxiliary seal portion 9 is provided in a recess 7 on the outer side of the steam release seal portion 8 so as to be separated from the heat seal portion 5 and the knurled seal portion 13. It is.
  • Other configurations of the package 71 are the same as those of the package 1 in FIG.
  • the heat seal part 5 Open. High-temperature water vapor blows out from the opening, and is discharged outside the container using the recess 7 as a passage.
  • the auxiliary seal portion 9 can be formed simultaneously with the knurled seal portion 13. The shape and size of the auxiliary seal portion 9 can be appropriately selected according to the size of the container.
  • FIG. 17 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
  • auxiliary seal portions 9, 9 are connected to the heat seal portion 5 in the concave portion 7 outside the steam release seal portion 8.
  • Other configurations of the package 81 are the same as those of the package 1 shown in FIG.
  • FIG. 18 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
  • auxiliary seal portions 9, 9 are connected to the heat seal portion 5 and the outer knurled seal portion 13 in the concave portion 7 outside the steam release seal portion 8. is there.
  • Other configurations of the package 81 are the same as those of the package 1 in FIG.
  • a container main body and a cover body can be manufactured by a conventional method.
  • a method for forming the container body vacuum forming, pressure forming, vacuum / pressure forming, injection molding, or the like can be employed.
  • an outer layer of polypropylene resin (thickness 350,1 m) / titanium white pigment added to polypropylene with a melt index (Ml) 0.5 ⁇ 5 / adhesive layer made of maleic anhydride-modified polypropylene (thickness 20 m) / Barrier made of ethylene butyl alcohol copolymer (thickness 60 m) / Same adhesive layer (thickness 20 m) as above / Polypropylene resin inner layer (thickness 350 m) with MI 0.5, A multilayer sheet of 3 types and 5 layers with a total thickness of 0.8 mm was produced by ordinary coextrusion molding.
  • a square container with a flange having the shape shown in Fig. 1 and having an outer dimension of 156 mm x 133 mm and a height of 29 mm (inner volume of about 340 ml) was formed by a normal vacuum / pressure forming machine ( (Flange width: straight line 8mm, corner maximum 17mm).
  • Flange width straight line 8mm, corner maximum 17mm.
  • independent recesses 6 and 7 having a depth of 0.5 mm are formed on the inside and outside of the part corresponding to the heat seal part with the lid at the time of molding.
  • a circular spot-like portion having a diameter of 3 mm was left in the outer concave portion 7 and the concave portion was not partially processed.
  • a 12- ⁇ biaxially stretched polyester film (outer layer), a 15 m thick biaxially stretched nylon film (intermediate layer), and a 50 ⁇ m thick ethylene / propylene composite material
  • a film (inner layer) was used, and a polyurethane adhesive was interposed between each resin layer, and a laminate was formed by dry lamination to form a lid material according to the following procedure.
  • the adhesive layer and the intermediate layer material that are in a sticky state are bonded together, and after crimping with a heated metal roll and a rubber roll, the cooled metal roll is passed through and wound up.
  • the inner layer material was bonded to this laminate, and cut into a desired size to form a lid.
  • Example 1 as shown in FIG. 12, except that a total of three spot-like auxiliary seal portions 9 were provided on the outer side 7 and the inner side 6 of the steam release seal portion 8 to form a square container.
  • the container was filled and sealed with 200 g of sterile cooked rice to obtain a microwave cooking package.
  • Example 1 as shown in FIG. 16, except that a substantially triangular auxiliary seal part 9 is provided in the outer recessed part 7 of the steam release seal part 8 to form a square container, the same as in Example 1. Similarly, 200 g of sterile cooked rice was filled and sealed in a container to obtain a microwave cooking packaging.
  • Example 1 as shown in FIG. 17, except that a square container is formed by providing two auxiliary seal portions 9 and 9 connected to the heat seal portion 5 in the recess 7 outside the steam release seal portion 8. As in Example 1, the container was filled and sealed with 200 g of sterile cooked rice. A package for cooking the child range was obtained.
  • the lid 4 is heat-sealed to the flange 2 without forming an auxiliary seal on the outside of the steam release seal 8, and then the flange 2 except for the outer 14 of the opening 12
  • a package for microwave oven cooking was obtained in the same manner as in Example 1 except that 200 g of sterile cooked rice was filled and sealed in a container, except that a knurled seal was applied over the entire circumference.
  • Table 10 shows the results of checking the presence or absence of breakage of the seals by dropping each of the 10 packagings 10 times in succession from 120 cm in a 5 ° C atmosphere and by dropping them 10 times.
  • the seal strength (average value) measured from the inner side of the peripheral seal portion 5 by the following method was 18 N / 15 mm. Further, the opening strength (average value) measured from the outside of the opening sealing portion 12 was! /, And the deviation was 12 N / cup.
  • the container was fixed to the container holder, and the lid was cut to 15 mm width on both sides of the seal part.
  • the lid of the inner part of the container was fixed to the chuck of the tensile tester, and the maximum load was measured by pulling upward in the 90 ° direction at a speed of 300 mm / min.
  • the container sealing surface was tilted 45 ° and fixed to the container holder, and the lid of the outer protrusion corresponding to the opening was fixed to the chuck, and the maximum load was measured by pulling upward at the same speed as above.
  • the sealing property can be maintained until the steam is removed, compared to the conventional microwave oven heating after peeling off the lid, so that the steaming effect of the cooked rice The taste was improved.
  • the package of Comparative Example 1 does not provide an auxiliary seal part at least outside the steam release seal part, and provides a knurled seal over the entire circumference inside and outside the peripheral heat seal part, including the inside and outside of the steam release seal part. It has been applied.
  • steam with a position force other than the steam vent seal part escapes due to heating in the microwave oven, or steam does not escape within a predetermined time.
  • the steam escape was slow, the deformation of the container was difficult to return.

Landscapes

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

Abstract

A package body for microwave oven cooking, comprising a container main body of synthetic resin with flange portion having contents packed therein and a lid member heat sealed to the flange portion so as to attain hermetic sealing, wherein a protrudent portion toward the inside of the container is provided on the heat seal area to thereby create a steam release seal area, and wherein at the site extending from the steam release seal area to a container outside edge portion, the flange portion and the lid member are heat sealed to each other to thereby provide at least one auxiliary seal area, and wherein knurling seal is provided on the sites other than the outside site and inside site of the steam release seal area. Accordingly, a package body for microwave oven cooking adapted to prevent upward curl of the outside edge portion of lid member heat sealed to the flange portion and to realize secure automatic opening of the lid member by an increase of pressure within the container at microwave oven cooking can be prepared at low cost.

Description

明 細 書  Specification
電子レンジ調理用包装体  Packaging for microwave oven cooking
技術分野  Technical field
[0001] 本発明は、フランジ部を有する合成樹脂製の容器本体に米飯等の食品を充填し、 該フランジ部に蓋体をヒートシールして密封した電子レンジ調理用包装体に関する。 背景技術  TECHNICAL FIELD [0001] The present invention relates to a microwave cooking packaging body in which a synthetic resin container body having a flange portion is filled with food such as cooked rice, and a lid body is heat-sealed and sealed to the flange portion. Background art
[0002] 従来、レトルト食品、冷凍食品等を合成樹脂製の密封容器に収納し、食べる時に電 子レンジで加熱調理する電子レンジ調理用包装体が種々知られている。しかしなが ら、これらの包装体を電子レンジで加熱すると、容器内に収納した食品から発生する 水蒸気等により包装体の内圧が上昇し、包装体が破裂することがある。その結果、食 品が飛散し、電子レンジ内を汚したり、人体に対してやけど等の危害を与えるおそれ 力 sある。 Conventionally, various microwave oven packaging packages are known in which retort food, frozen food, and the like are stored in a synthetic resin sealed container and cooked in an microwave oven when eaten. However, when these packages are heated in a microwave oven, the internal pressure of the packages may increase due to water vapor generated from food stored in the container, and the packages may burst. As a result, food is scattered, or soil the microwave oven, there is a fear force s harm burns or the like to the human body.
[0003] このため、このような包装体を電子レンジで加熱調理する前に、包装体をあらかじめ 部分的に開封したり、包装体に孔を開けることにより包装体内で発生する水蒸気等を 外部に排出し、包装体の破裂を防止する方法がとられている。  [0003] Therefore, before such a package is cooked in a microwave oven, the package is partially opened in advance, or water vapor generated in the package is formed outside by opening a hole in the package. A method of discharging and preventing rupture of the package is taken.
しかしながら、このような方法は一般消費者にとっては手間の力、かるものである。ま た、電子レンジ加熱により発生した水蒸気が直ちに包装体外へ排出されるために、 水蒸気による食品の加熱蒸らし効果が低減し、食味が落ちるという欠点がある。  However, such a method is troublesome for general consumers. In addition, since steam generated by microwave heating is immediately discharged out of the package, there is a disadvantage that the steaming effect of the food by steam is reduced and the taste is lowered.
[0004] このような欠点を解消するために、フランジ部を有する合成樹脂製の容器内に食品 類を充填し、該フランジ部に蓋体をヒートシールする際に、ヒートシール部に容器の 内側方向に突出する突出部 (蒸気抜きシール部）を形成した電子レンジ調理用包装 体が種々提案されている（例えば、特許文献;!〜 3参照）。これらの電子レンジ調理用 包装体では、電子レンジで加熱調理する際に、容器内の内圧上昇によって該突出部 を自動的に開口させることにより包装体の破裂を防止して!/、る。  [0004] In order to eliminate such drawbacks, when a foodstuff is filled in a synthetic resin container having a flange portion, and the lid is heat sealed to the flange portion, the heat seal portion is placed inside the container. Various packages for microwave oven cooking in which protruding portions (steam venting seal portions) protruding in the direction have been proposed (see, for example, Patent Documents;! To 3). In these microwave oven cooking packages, when cooking with a microwave oven, the protrusions are automatically opened due to an increase in the internal pressure of the container to prevent the package from bursting.
特許文献 1 :特開昭 62— 235080号公報  Patent Document 1: Japanese Patent Application Laid-Open No. 62-235080
特許文献 2：特開平 11 171261号公報  Patent Document 2: Japanese Patent Laid-Open No. 11 171261
特許文献 3：特開 2000— 62858号公報 [0005] 一方、内容物を充填した合成樹脂製の容器のフランジ部に蓋体をヒートシールする 際に、密封用のヒートシールを施した後に、該ヒートシール部を含むフランジ部の全 周にわたっていわゆるローレットシールを施すことによって、ヒートシールされた蓋体 外側端部のめくれ上がりを防止することが広く行われている（例えば、特許文献 4参 昭） Patent Document 3: Japanese Patent Laid-Open No. 2000-62858 [0005] On the other hand, when the lid is heat-sealed to the flange portion of the synthetic resin container filled with the contents, a sealing heat seal is applied, and then the entire circumference of the flange portion including the heat-sealed portion is provided. By applying a so-called knurled seal, it is widely practiced to prevent the outer end of the heat-sealed lid from being turned up (for example, see Patent Document 4).
特許文献 4 :特開平 3— 29769号公報  Patent Document 4: JP-A-3-29769
[0006] そして、図 13にみられるように、前記した蒸気抜きシール部を形成した電子レンジ 調理用包装体においても、密封用のヒートシールに加えてローレットシールを施すこ とが試みられている。し力もながら、電子レンジによる加熱調理時に、内容物から発生 した蒸気がフランジ部と蓋体の間を通過して自動開口する蒸気抜きシール部を設け た電子レンジ調理用包装体に、通常のローレットシールを施した場合には蒸気抜き シール部の自動開口性が阻害される。その結果、電子レンジによる加熱調理時に所 定の部位からの自動開口が行われなかったり、爆発的に開口する等の異常が発生 するといつた問題があった。 [0006] As shown in FIG. 13, in the microwave oven cooking package having the steam release seal portion described above, it has been attempted to apply a knurled seal in addition to a heat seal for sealing. . However, when cooking with a microwave oven, the steam generated from the contents passes between the flange and the lid, and is provided with a steam release seal that automatically opens. If the seal is applied, the automatic opening of the steam vent seal will be hindered. As a result, there was a problem when an abnormality such as the automatic opening from a predetermined part not being performed or an explosive opening occurred during cooking with a microwave oven.
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0007] したがって、本発明は前記したフランジ部に蓋体をヒートシールする際に、ヒートシ ール部に容器の内側方向に突出する突出部を設けることにより蒸気抜きシール部を 形成するとともに、さらにローレットシールを施した電子レンジ調理用包装体に特有の 問題を解消することを目的とする。すなわち、本発明はフランジ部にヒートシールされ た蓋体外側端部のめくれ上がりを防止し、かつ、電子レンジ調理時の容器内の圧力 上昇により蓋体が確実に自動開口する電子レンジ調理用包装体を、低コストで提供 することを目白勺とする。 Accordingly, in the present invention, when the lid body is heat-sealed to the flange portion, the steam seal portion is formed by providing the heat seal portion with a protruding portion that protrudes inward of the container. The objective is to eliminate the problems peculiar to microwave oven packaging with knurled seals. That is, the present invention prevents a roll-up of the outer end of the lid body heat-sealed to the flange portion, and the microwave oven cooking package in which the lid body automatically opens due to an increase in pressure in the container during microwave cooking. We will make it easy to provide the body at low cost.
課題を解決するための手段  Means for solving the problem
[0008] 本発明では、上記の課題を解決するために、次の 1 7の構成を採用する。 In the present invention, in order to solve the above problems, the following configuration 17 is adopted.
1.フランジ部を有する合成樹脂製の容器本体に内容物を充填し、該フランジ部に蓋 体をヒートシールして密封した電子レンジ調理用包装体にお!/、て、該ヒートシール部 に容器の内側方向に向力、う突出部を設けることによって蒸気抜きシール部を形成し、 蒸気抜きシール部から容器外側端部に到る部位にフランジ部と蓋体をヒートシール することにより少なくとも 1つの補助シール部を設けるとともに、前記蒸気抜きシール 部の外側部位及び内側部位以外の領域にはローレットシールを施したことを特徴と する電子レンジ調理用包装体。 1. A microwave oven packaging body filled with the contents of a synthetic resin container body with a flange and heat sealed with a lid on the flange to seal the heat seal. A steam vent seal is formed by providing an urging force and a protruding portion in the inner direction of the container, At least one auxiliary seal part is provided by heat-sealing the flange part and the lid body at the part from the steam release seal part to the outer edge of the container, and in areas other than the outer part and the inner part of the steam release seal part. Is a microwave cooking packaging characterized by a knurled seal.
2.前記蒸気抜きシール部の内側部位にも少なくとも 1つの補助シール部を設けたこ とを特徴とする 1に記載の電子レンジ調理用包装体。  2. The packaging for microwave oven cooking according to 1, wherein at least one auxiliary seal portion is provided also on an inner portion of the steam release seal portion.
3.蒸気抜きシール部となるフランジ部のヒートシール部の内側及び外側にそれぞれ 独立した凹部を設けることにより容器の内側方向に向力、う突出部を形成したことを特 徴とする 1又は 2に記載の電子レンジ調理用包装体。  3. The feature is that an independent recess is provided on the inside and outside of the heat seal part of the flange part, which is the steam release seal part, to form a directional force and a protruding part in the inner direction of the container 1 or 2 Packaging for microwave oven according to 1.
4.前記凹部に少なくとも 1つの補助凸部を設け、該補助凸部と蓋体をヒートシールす ることにより補助シール部を形成したことを特徴とする 3に記載の電子レンジ調理用 包装体。  4. The microwave oven packaging body according to 3, wherein at least one auxiliary convex portion is provided in the concave portion, and the auxiliary convex portion and the lid are heat sealed to form an auxiliary seal portion.
5.前記補助シール部を、点状のスポットシールとして形成したことを特徴とする 1〜4 の!/、ずれかに記載の電子レンジ調理用包装体。  5. The packaging for microwave oven cooking according to 1-4, wherein the auxiliary seal portion is formed as a spot-like spot seal.
6.前記突出部の形状を U字状乃至 V字状に形成したことを特徴とする 1〜5のいず れかに記載の電子レンジ調理用包装体。  6. The microwave oven packaging for packaging according to any one of 1 to 5, wherein the protruding portion is formed in a U shape or a V shape.
7.電子レンジ調理用包装体のヒートシール部の蒸気抜きシール部に対向する位置 に、容器の外側方向に向けて突出する開封部を形成したことを特徴とする 1〜6のい ずれかに記載の電子レンジ調理用包装体。  7. Any one of 1 to 6 characterized in that an opening part protruding toward the outer side of the container is formed at a position facing the steam release seal part of the heat seal part of the microwave oven cooking package. The microwave oven cooking packaging as described.
8.前記開封部の形状を V字状に形成したことを特徴とする 7に記載の電子レンジ調 理用包装体。  8. The package for microwave oven control according to 7, wherein the shape of the unsealing portion is formed in a V shape.
本発明において、補助シール部とは、容器内に収納する内容物の密封シールには 関与しないシール部である。また、ローレットシールとは、シール跡が碁盤目状になる シールであり、ローレット処理を施した部分におけるシール部：非シール部の面積比 率が 1/9〜6/4程度であるものをいう。通常は、碁盤目の 1辺の長さが 0. 3〜lm m程度で、ピッチが 0. 7〜； 1. Omm程度とすることが好ましい。ローレットシールは、 該シール部分が剥離しない程度に封かんされる条件で施される。例えば、図 8にみら れるようなシーノレ工具を使用して、 170〜240°C：、；!〜 3禾少、シーノレ面圧 10〜40kg/ cm2程度でヒートシールすることにより施される。 In the present invention, the auxiliary seal portion is a seal portion that does not participate in the hermetic seal of the contents stored in the container. The knurled seal is a seal in which the seal mark has a grid pattern, and the area ratio of the seal part to the non-seal part in the knurled part is about 1/9 to 6/4. . Usually, it is preferable that the length of one side of the grid is about 0.3 to 1 mm and the pitch is about 0.7 to 1. Omm. The knurled seal is applied under such a condition that the seal portion is sealed to such an extent that it does not peel off. For example, using a sheath tool such as that shown in Fig. 8, 170 to 240 ° C:;! To 3 less, seat surface pressure 10 to 40kg / It applied by heat-sealing in cm 2.
発明の効果  The invention's effect
[0010] 本発明によれば、フランジ部を有する容器本体に内容物を充填した後に蓋体をヒ ートシールして密封した電子レンジ調理用包装体の蓋体外側端部のめくれ上がりを 防止して、流通 ·販売過程において蓋体とフランジ部の間に異物が混入するのを防 止すること力 Sできる。また、電子レンジによる加熱調理時には、容器内の圧力上昇に より蓋体が確実に蒸気抜きシール部から自動開口するとともに、該蒸気抜きシール部 を経由した蒸気のスムーズな排出を実現することができる。  [0010] According to the present invention, it is possible to prevent the outer end of the lid body of the microwave cooking packaging body from being turned up after the container body having the flange portion is filled with the contents and then the lid body is heat sealed. In the distribution / sales process, it is possible to prevent foreign matter from entering between the lid and the flange. In addition, when cooking with a microwave oven, the lid can surely automatically open from the steam vent seal portion due to the pressure increase in the container, and smooth discharge of steam via the steam vent seal portion can be realized. .
図面の簡単な説明  Brief Description of Drawings
[0011] [図 1]図 1は、本発明の電子レンジ調理用包装体の 1例を示す平面図である。  FIG. 1 is a plan view showing an example of a microwave oven cooking package according to the present invention.
[図 2]図 2は、図 1の包装体の正面図である。  FIG. 2 is a front view of the package of FIG.
[図 3]図 3は、図 1の包装体のフランジ部に形成するヒートシール部の突出部の部分 拡大図である。  FIG. 3 is a partially enlarged view of a protruding portion of a heat seal portion formed on a flange portion of the package of FIG. 1.
[図 4]図 4は、図 1の包装体を電子レンジで加熱調理する際の、図 3の AA線における 断面模式図である。  4 is a schematic cross-sectional view taken along line AA of FIG. 3 when the package of FIG. 1 is cooked with a microwave oven.
[図 5]図 5は、図 1の包装体を電子レンジで加熱調理する際の、図 3の BB線における 断面模式図である。  FIG. 5 is a schematic cross-sectional view taken along the line BB of FIG. 3 when the package of FIG. 1 is cooked with a microwave oven.
[図 6]図 6は、図 1の包装体において、蓋体をヒートシールする前の蒸気抜きシール部 を形成するフランジ部の部分拡大図である。  FIG. 6 is a partially enlarged view of a flange portion forming a steam release seal portion before heat-sealing the lid in the package of FIG.
[図 7]図 7は、容器本体のフランジ部に蓋体をヒートシールする際に使用するシール 工具の部分拡大図である。  FIG. 7 is a partial enlarged view of a sealing tool used when heat-sealing the lid body to the flange portion of the container body.
[図 8]図 8は、本発明の電子レンジ調理用包装体のフランジ部にローレットシールを施 す際に使用するシール工具の部分拡大図である。  [FIG. 8] FIG. 8 is a partially enlarged view of a sealing tool used when a knurled seal is applied to the flange portion of the microwave oven packaging body of the present invention.
[図 9]図 9は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜 きシール部の部分拡大図である。  FIG. 9 is a partially enlarged view of a steam vent seal part of a package showing another example of the microwave cooking package of the present invention.
[図 10]図 10は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気 抜きシール部の部分拡大図である。  [Fig. 10] Fig. 10 is a partially enlarged view of a steam vent seal portion of the package, showing another example of the microwave oven package of the present invention.
[図 11]図 11は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気 抜きシール部の部分拡大図である。 FIG. 11 is a schematic diagram showing another example of the microwave oven cooking package according to the present invention. It is the elements on larger scale of a blank seal part.
[図 12]図 12は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気 抜きシール部の部分拡大図である。  [Fig. 12] Fig. 12 is a partially enlarged view of a steam vent seal portion of the package, showing another example of the microwave cooking package of the present invention.
園 13]図 13は、従来の電子レンジ調理用包装体の 1例を示す平面図である。 13] FIG. 13 is a plan view showing an example of a conventional microwave cooking package.
園 14]図 14は、本発明の電子レンジ調理用包装体の他の例を示す平面図である。 14] FIG. 14 is a plan view showing another example of the microwave oven cooking package of the present invention.
[図 15]図 15は、図 14の包装体の正面図である。  FIG. 15 is a front view of the package of FIG.
[図 16]図 16は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気 抜きシール部の部分拡大図である。  FIG. 16 is a partially enlarged view of a steam vent seal portion of a package, showing another example of the microwave cooking package of the present invention.
[図 17]図 17は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気 抜きシール部の部分拡大図である。  FIG. 17 is a partially enlarged view of a steam vent seal portion of a package, showing another example of the microwave oven package of the present invention.
[図 18]図 18は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気 抜きシール部の部分拡大図である。  FIG. 18 is a partially enlarged view of a steam vent seal portion of a package, showing another example of the microwave oven package of the present invention.
符号の説明 Explanation of symbols
1、 11、 21、 31、 41、 51、 61、 71、 81、 91 電子レンジ調理用包装体 容器本体 ヒー卜シーノレ  1, 11, 21, 31, 41, 51, 61, 71, 81, 91 Packaging for microwave oven Container body Heat seal
凹部  Recess
突出部  Protrusion
補助シール部  Auxiliary seal
シール工具  Sealing tool
ローレットシーノレ  Knurled scenery
凸部  Convex
幅広部  Wide part
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
本発明で電子レンジ調理用包装体の容器本体及び蓋体を構成する材料としては、 通常包装容器の製造に用いられるヒートシール性を有するプラスチック材料が使用さ れる。このようなプラスチック材料としては、例えばヒートシール性を有する熱可塑性 樹脂からなる単層のフィルム、シート類や、ヒートシール性を有する熱可塑性樹脂を 他の熱可塑性樹脂等と積層した多層フィルム、シート等が挙げられる。 As the material constituting the container body and lid of the microwave oven packaging body according to the present invention, a plastic material having heat-sealing properties, which is usually used for manufacturing packaging containers, is used. It is. Examples of such plastic materials include single-layer films and sheets made of a thermoplastic resin having heat sealability, and multilayer films and sheets in which a thermoplastic resin having heat sealability is laminated with other thermoplastic resins. Etc.
このようなヒートシール性を有するプラスチック材料としては、例えば公知の低密度 ポリエチレン、直鎖状低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン 、ポリプロピレン、プロピレン エチレン共重合体、エチレン 酢酸ビュル共重合体、 エチレン系不飽和カルボン酸乃至その無水物でグラフト変性されたォレフイン樹脂等 のォレフイン系樹脂；比較的低融点乃至低軟化点のポリアミド乃至コポリアミド樹脂； ポリエステル乃至コポリエステル樹脂；ポリカーボネイト樹脂等が使用される。  Examples of the plastic material having such heat sealability include known low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene ethylene copolymer, ethylene acetate butyl copolymer, Olefin resins such as olefin resins graft-modified with ethylenically unsaturated carboxylic acids or anhydrides thereof; polyamides or copolyamide resins having relatively low melting points or low softening points; polyesters or copolyester resins; polycarbonate resins, etc. are used. The
[0014] また、ヒートシール性を有するプラスチック材料と積層する他のプラスチック材料とし ては、ヒートシール性を有し又は有さない熱可塑性樹脂、各種バリヤ一フィルムや酸 素吸収性樹脂を使用することができる。  [0014] Further, as other plastic materials to be laminated with the plastic material having heat sealability, a thermoplastic resin with or without heat sealability, various barrier films, and an oxygen-absorbing resin are used. be able to.
このような熱可塑性樹脂としては、例えば結晶性ポリプロピレン、結晶性プロピレン エチレン共重合体、結晶性ポリブテン 1、結晶性ポリ 4ーメチルペンテン 1、低 中 或いは高密度ポリエチレン、エチレン 酢酸ビュル共重合体（EVA) EV Aケン化物、エチレン アクリル酸ェチル共重合体（EEA)、イオン架橋ォレフィン共 重合体（アイオノマー）等のポリオレフイン類；ポリスチレン、スチレン ブタジエン共重 合体等の芳香族ビュル共重合体;ポリ塩化ビュル、塩化ビユリデン樹脂等のハロゲン 化ビュル重合体;ポリアクリル系樹脂；アクリロニトリル—スチレン共重合体、アタリロニ トリルースチレン ブタジエン共重合体の如き二トリル重合体；ポリエチレンテレフタレ ート、ポリテトラメチレンテレフタレート等のポリエステル類； 6 ナイロン、 12 ナイ口 ン、メタキシリレンジァミン（MX)ナイロンのようなポリアミド類；各種ポリカーボネート； フッ素系樹脂；ポリオキシメチレン等のポリアセタール類等の熱可塑性樹脂を挙げる こと力 Sできる。これらの熱可塑性樹脂は単独で又は二種以上をブレンドして使用する ことができ、また、各種の添加剤を配合して使用してもよい。  Examples of such thermoplastic resins include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene 1, crystalline poly-4-methylpentene 1, low-medium or high-density polyethylene, and ethylene acetate butyl copolymer (EVA). Polyolefins such as EV A saponified product, ethylene ethyl acrylate copolymer (EEA), ionically cross-linked olefin copolymer (ionomer); aromatic butyl copolymers such as polystyrene and styrene butadiene copolymer; Halogenated butyl polymer such as vinylidene chloride resin; polyacrylic resin; nitrile polymer such as acrylonitrile-styrene copolymer, acrylonitrile-toluene styrene butadiene copolymer; polyethylene terephthalate, polytetramethylene terephthalate, etc. Polyesters; 6 Niro , 12 Nai port down, polyamides such as meta-xylylene § Min (MX) nylon; various polycarbonates; fluorine-based resin; can this and force S include thermoplastic resins such as polyacetal such as polyoxymethylene or the like. These thermoplastic resins can be used alone or in combination of two or more, and various additives may be used in combination.
[0015] ノ リヤーフィルムとしては、公知の酸素バリヤ一性を有する熱可塑性樹脂により構 成されたフィルムは、全て使用することができる。このような樹脂としては、例えばェチ レン ビュルアルコール共重合体、ポリアミド、ポリ塩化ビニリデン系樹脂、ポリビュル アルコール、フッ素樹脂等が挙げられるが、焼却処分時に有害ガスを発生するおそ れのな!/、塩素を含まな!/、樹脂を使用することが好ましレ、。 [0015] As the non-layer film, any film composed of a known thermoplastic resin having oxygen barrier properties can be used. Such resins include, for example, ethylene butyl alcohol copolymer, polyamide, polyvinylidene chloride resin, poly butyl. Alcohol, fluororesin, etc. are listed, but they may not generate toxic gas during incineration! /, Does not contain chlorine! /, And it is preferable to use resin.
特に好ましい酸素バリヤ一性樹脂としては、エチレン含有量が 20〜60モル％、特 に 25〜50モル％であるエチレン 酢酸ビュル共重合体を、ケン化度が 96モル％以 上、特に 99モル％以上となるようにケン化して得られる共重合体ケン化物が挙げられ 他の好ましい酸素ノ リヤー性樹脂としては、炭素数 100個当たりのアミド基の数が 5 〜50個、特に 6〜20個の範囲にあるポリアミド類；例えばナイロン 6、ナイロン 6, 6、 ナイロン 6/6, 6共重合体、メタキシリレンアジパミド（MX6)、ナイロン 6, 10、ナイ口 ン 11、ナイロン 12、ナイロン 13等が挙げられる。  A particularly preferable oxygen barrier resin is an ethylene acetate butyl copolymer having an ethylene content of 20 to 60 mol%, particularly 25 to 50 mol%, and a saponification degree of 96 mol% or more, particularly 99 mol. % Of the saponified copolymer obtained by saponification such that the number of amide groups per 100 carbon atoms is 5-50, especially 6-20. Polyamides in a range; for example, nylon 6, nylon 6, 6, nylon 6/6, 6 copolymer, metaxylylene adipamide (MX6), nylon 6, 10, nylon 11, nylon 12, Nylon 13 etc. are mentioned.
[0016] また、他のバリヤ一フィルムとして、シリカ蒸着ポリエステルフィルム、アルミナ蒸着 ポリエステルフィルム、シリカ蒸着ナイロンフィルム、アルミナ蒸着ナイロンフィルム、 アルミナ蒸着ポリプロピレンフィルム、炭素膜蒸着ポリエステルフィルム、炭素膜蒸着 ナイロンフィルム；さらにアルミナ及びシリカをポリエステルフィルムやナイロンフィル ム等のベースフィルムに同時蒸着した 2元蒸着フィルム；またナイロン 6/メタキシリレ ンジァミンナイロン共押出しフィルム、ポリプロピレン/エチレン一ビュルアルコール 共重合体共押出しフィルム；またポリビュルアルコールコートポリプロピレンフィルム、 ポリビニノレアノレコ一ノレコ一トポリエステノレフイノレム、ポリビニノレアノレコ一ノレコートナイ口 ンフィルム、ポリアクリル酸系樹脂コートポリエステルフィルム、ポリアクリル酸系樹脂 コートナイロンフィルム、ポリアクリル酸系樹脂コートポリプロピレンフィルム、ポリグリコ ール酸樹脂コートポリエステルフィルム、ポリグリコール酸樹脂コートナイロンフィルム 、ポリダリコール酸樹脂コートポリプロピレンフィルム等の有機樹脂コートフイルム；さら に有機樹脂材料及び無機材料からなるハイブリッドコート材をポリエステルフィルム やナイロンフィルム、ポリプロピレンフィルム等のベースフィルムにコーティングしたも の等を挙げること力 Sでさる。 [0016] Further, as other barrier films, silica-deposited polyester film, alumina-deposited polyester film, silica-deposited nylon film, alumina-deposited nylon film, alumina-deposited polypropylene film, carbon film-deposited polyester film, carbon film-deposited nylon film; Two-layer deposition film in which alumina and silica are co-deposited on a base film such as polyester film or nylon film; nylon 6 / metaxylylenediamine nylon coextruded film, polypropylene / ethylene monobutyl alcohol copolymer coextruded film; Polyvinyl alcohol coated polypropylene film, Polyvinylenorenocoleco Polyesterenoreinorem, Polyvinylenorenocoleo Colate Nai film Polyacrylic acid resin coated polyester film, Polyacrylic acid resin coated nylon film, Polyacrylic acid resin coated polypropylene film, Polyglycolic acid resin coated polyester film, Polyglycolic acid resin coated nylon film, Polydaricholic acid resin coated polypropylene film In addition, it is possible to cite an organic resin coated film such as a film coated with a base film such as a polyester film, a nylon film, or a polypropylene film with a hybrid coating material composed of an organic resin material and an inorganic material.
これらのバリヤ一フィルムは、単独で又は 2種以上を組合わせて使用することができ  These barrier films can be used alone or in combination of two or more.
[0017] 酸素吸収性樹脂としては、（1)樹脂自体が酸素吸収性を有する樹脂を使用するこ と力 Sできる。また、（2)酸素吸収性を有する又は有しない熱可塑性樹脂中に酸素吸 収剤を配合した樹脂組成物を使用することができる。酸素吸収性樹脂組成物（2)を 構成する熱可塑性樹脂としては特に制限はなぐ酸素バリヤ一性を有する熱可塑性 樹脂や、酸素ノ リヤー性を有さない熱可塑性樹脂のいずれもが使用できる。酸素吸 収性樹脂組成物（2)を構成する熱可塑性樹脂として、樹脂自体が酸素吸収性又は 酸素バリヤ一性を有するものを使用した場合は、酸素吸収剤による酸素吸収効果と の相乗効果により、容器内部への酸素の侵入を効果的に防止することができるので 好ましい。 [0017] As the oxygen-absorbing resin, (1) a resin having an oxygen-absorbing property is used. And force S. In addition, (2) a resin composition in which an oxygen absorbent is blended in a thermoplastic resin with or without oxygen absorbability can be used. As the thermoplastic resin constituting the oxygen-absorbing resin composition (2), any of a thermoplastic resin having an oxygen barrier property without limitation and a thermoplastic resin having no oxygen barrier property can be used. As the thermoplastic resin constituting the oxygen-absorbing resin composition (2), when the resin itself has an oxygen-absorbing property or oxygen-barrier property, a synergistic effect with the oxygen-absorbing effect by the oxygen-absorbing agent is caused. It is preferable because oxygen can be effectively prevented from entering the container.
[0018] 樹脂自体が酸素吸収性を有するものとしては、例えば、樹脂の酸化反応を利用し たものカ挙げられる。、例えば、ポリブタジエン、ポリイソプレン、ポリプロピレン、ェチ レン一酸化炭素共重合体； 6—ナイロン、 12—ナイロン、メタキシリレンジァミン (MX) ナイロンのようなポリアミド類等の酸化性の有機材料に、酸化触媒としてコバルト、口 ジゥム、銅等の遷移金属を含む有機酸塩類や；ベンゾフエノン、ァセトフエノン、クロ口 ケトン類のような光増感剤を加えたものが使用できる。これらの酸素吸収材料を使用 した場合は、紫外線、電子線のような高エネルギー線を照射することによって、一層 の効果を発現させることも出来る。  [0018] Examples of the resin itself having oxygen absorptivity include those utilizing an oxidation reaction of the resin. For example, polybutadiene, polyisoprene, polypropylene, ethylene carbon monoxide copolymers; 6-nylon, 12-nylon, metaxylylenediamine (MX) for oxidizable organic materials such as polyamides such as nylon As an oxidation catalyst, organic acid salts containing transition metals such as cobalt, zinc, and copper; and those added with photosensitizers such as benzophenone, acetophenone, and ketones can be used. When these oxygen-absorbing materials are used, further effects can be exhibited by irradiating with high energy rays such as ultraviolet rays and electron beams.
[0019] 熱可塑性樹脂中に配合する酸素吸収剤としては、従来この種の用途に使用されて いる酸素吸収剤は全て使用できる。一般には、還元性でし力、も実質上水に不溶な酸 素吸収剤が好ましい。酸素吸収剤の適当な例としては、還元性を有する金属粉、例 えば還元性鉄、還元性亜鉛、還元性錫粉;金属低位酸化物、例えば FeO、 Fe O ；  [0019] As the oxygen absorbent to be blended in the thermoplastic resin, any oxygen absorbent conventionally used for this kind of application can be used. In general, an oxygen absorbent that is reducible and that is substantially insoluble in water is preferred. Suitable examples of oxygen absorbers include reducing metal powders such as reducing iron, reducing zinc, and reducing tin powders; low metal oxides such as FeO and Fe 2 O;
3 4 還元性金属化合物、例えば炭化鉄、ケィ素鉄、鉄カルボニル、水酸化第一鉄等の一 種又は二種以上を組み合わせたものを主成分としたものが挙げられる。特に好まし い酸素吸収剤としては、還元性鉄、例えば鉄鋼の製造工程で得られる酸化鉄をコー タスで還元し、生成した海綿鉄を粉砕後、水素ガスや分解アンモニアガス中で仕上 還元を行なった還元性鉄；鉄鋼の酸洗工程で得られる塩化鉄水溶液から鉄を電解 析出させ、粉砕後仕上還元を行なった還元性鉄等が挙げられる。  3 4 Reducing metal compounds such as those containing as a main component one or a combination of two or more of iron carbide, potassium iron, iron carbonyl, ferrous hydroxide and the like. As a particularly preferred oxygen absorber, reducing iron, for example, iron oxide obtained in the steel manufacturing process is reduced with a coata, and the resulting sponge iron is pulverized and then subjected to finish reduction in hydrogen gas or decomposed ammonia gas. Reduced iron performed; reducing iron obtained by electrolytically depositing iron from an aqueous iron chloride solution obtained in the steel pickling step, and then performing final reduction after grinding.
これらの酸素吸収剤は必要に応じて、アルカリ金属、アルカリ土類金属の水酸化物 、炭酸塩、亜硫酸塩、チォ硫酸塩、第三リン酸塩、第二リン酸塩、有機酸塩、ハロゲ ン化物等の電解質からなる酸化促進剤や、さらには活性炭、活性アルミナ、活性白 土のような助剤とも組み合わせて使用することができる。特に好ましレ、酸化促進剤とし ては、塩化ナトリウム、塩化カルシウム或いはこれらを組合わせたもの等が挙げられるThese oxygen absorbers may be used as required in alkali metal, alkaline earth metal hydroxide, carbonate, sulfite, thiosulfate, triphosphate, diphosphate, organic acid salt, halogenate. It can also be used in combination with an oxidation accelerator composed of an electrolyte such as an oxide, or an auxiliary agent such as activated carbon, activated alumina or activated clay. Particularly preferred examples of the oxidation accelerator include sodium chloride, calcium chloride, and combinations thereof.
〇 Yes
還元性鉄と酸化促進剤を組合わせて使用する場合には、両者の配合割合は、合 計量を 100重量部として、還元性鉄 99〜80重量部及び酸化促進剤;!〜 20重量部、 特に還元性鉄 98〜90重量部及び酸化促進剤 2〜； 10重量部とすることが好ましい。  When reducing iron and an oxidation accelerator are used in combination, the blending ratio of both is 99 to 80 parts by weight of reducing iron and an oxidation accelerator, with the total weight being 100 parts by weight;! To 20 parts by weight, In particular, reducing iron is preferably 98 to 90 parts by weight and oxidation accelerator 2 to 10 parts by weight.
[0020] 他の酸素吸収剤としては、多価フエノールを骨格内に有する高分子化合物、例え ば多価フエノール含有フエノール ·アルデヒド樹脂等が挙げられる。更に、水溶性物 質であるァスコルビン酸、エリソルビン酸、トコフエロール類及びこれらの塩類等も好 適に使用することが出来る。これらの酸素吸収性物質の内でも、還元性鉄及びァスコ ルビン酸系化合物が特に好ましレ、。 [0020] Other oxygen absorbers include polymer compounds having a polyvalent phenol in the skeleton, such as a polyhydric phenol-containing phenol-aldehyde resin. Further, ascorbic acid, erythorbic acid, tocopherols and salts thereof, which are water-soluble substances, can be suitably used. Of these oxygen-absorbing substances, reduced iron and ascorbic acid compounds are particularly preferred.
また、上記の樹脂自体が酸素吸収性を有する樹脂を、酸素吸収剤として熱可塑性 樹脂中に配合してもよい。  Further, a resin in which the above resin itself has oxygen absorbability may be blended in the thermoplastic resin as an oxygen absorbent.
これら酸素吸収剤は、一般に平均粒径が 50 m以下、特に 30 m以下の粒径を 有すること力 S好ましい。酸素吸収剤が透明あるいは半透明性を必要とする場合には、 平均粒径 10 m以下、特に 5 m以下の粒径を有することが好ましい。酸素吸収剤 は、上記の樹脂に 1乃至 70重量％、特に 5乃至 30重量％の割合で配合することが好 ましい。  These oxygen absorbers generally have an average particle size of 50 m or less, particularly preferably 30 m or less. When the oxygen absorbent needs to be transparent or translucent, it preferably has an average particle size of 10 m or less, particularly 5 m or less. The oxygen absorbent is preferably blended in the above resin in a proportion of 1 to 70% by weight, particularly 5 to 30% by weight.
[0021] 本発明で容器内に充填する米飯等の内容物は、雑菌、かび及び酸素により劣化し 、風味が低下し易い。したがって、本発明において容器本体及び蓋体を構成材料と しては、各種バリヤ一フィルムや酸素吸収性樹脂層を含む多層構造の積層体を使用 することが好ましい。積層体を構成する各層間には必要に応じて接着剤層を介在さ せること力 Sできる。このような接着剤としては特に制限はなぐ例えば無水マレイン酸 のような酸無水物で変性されたポリオレフイン系接着剤や、ポリウレタン系接着剤等、 通常積層体用の接着剤として用いられるものはいずれも使用することができる。  [0021] Contents such as cooked rice filled in the container according to the present invention are deteriorated by germs, mold and oxygen, and the flavor tends to be lowered. Therefore, in the present invention, it is preferable to use a multilayer structure including various barrier films and an oxygen-absorbing resin layer as the constituent material of the container body and the lid. It is possible to intervene an adhesive layer between the layers constituting the laminate as necessary. There are no particular restrictions on such adhesives, such as polyolefin adhesives modified with acid anhydrides such as maleic anhydride, polyurethane adhesives, and the like that are usually used as adhesives for laminates. Can also be used.
[0022] 容器本体を構成する積層体の好適な層構成としては、例えば、容器の外層側から 順に、ポリプロピレン (PP) /接着剤/エチレン酢酸ビュル共重合体ケン化物（EVO H)のようなガスバリヤ一性樹脂/接着剤/ PP ; PP/接着剤/ EVOH/接着剤/ 酸素吸収性樹脂層（例えば、還元性鉄及び酸化促進剤を含むポリオレフイン) / PP 等が挙げられる。 [0022] As a suitable layer structure of the laminate constituting the container body, for example, in order from the outer layer side of the container, polypropylene (PP) / adhesive / ethylene butyl acetate copolymer saponified product (EVO) H) gas barrier resin / adhesive / PP; PP / adhesive / EVOH / adhesive / oxygen-absorbing resin layer (for example, polyolefin containing reducing iron and oxidation accelerator) / PP etc. .
[0023] また、蓋材を構成する積層体の好適な層構成としては、例えば、蓋体の外層側から 順に、ナイロン (NY) /EVOH/PP系 .ポリエチレン (PE)系複合材料； NY/EVO H/直鎖状低密度ポリエチレン (LLDPE)；蒸着ポリエチレンテレフタレート（PET) /NY/PP系 . PE系複合材料；蒸着 PET/NY/LLDPE；蒸着 PET/NY/ポリ ブチレンテレフタレート（ΡΒΤ)系樹脂等が挙げられる。  [0023] Further, as a preferable layer structure of the laminate constituting the lid member, for example, in order from the outer layer side of the lid body, nylon (NY) / EVOH / PP system. Polyethylene (PE) system composite material; NY / EVO H / Linear Low Density Polyethylene (LLDPE); Evaporated Polyethylene Terephthalate (PET) / NY / PP System. PE Composite Material; Evaporated PET / NY / LLDPE; Evaporated PET / NY / Polybutylene Terephthalate (ΡΒΤ) Resin Etc.
[0024] つぎに、図面に基づいて、本発明の電子レンジ調理用包装体の具体例について、 詳細に説明する。  [0024] Next, specific examples of the microwave oven cooking package of the present invention will be described in detail with reference to the drawings.
図 1〜図 7は、本発明の電子レンジ調理用包装体の 1例を示す図である。図 1は包 装体の平面図、図 2は包装体の正面図、そして図 3は包装体のフランジ部に形成す るヒートシール部の突出部の部分拡大図である。また、図 4は包装体を電子レンジで 加熱調理する際の、図 3の ΑΑ線における断面模式図を表す。図 5は同じく包装体を 電子レンジで加熱調理する際の、図 3の ΒΒ線における断面模式図を表す。さらに、 図 6は蓋体をヒートシールする前の蒸気抜きシール部の突出部を形成するフランジ部 の部分拡大図を表す。図 7は該フランジ部に蓋体をヒートシールする際に使用される シール工具の部分拡大図を表す。そして、図 8は蓋体をヒートシールしたフランジ部 にローレットシールを施す際に使用されるシール工具のシール加工面の部分拡大図 を表す。  1-7 is a figure which shows one example of the packaging body for microwave oven cooking of this invention. FIG. 1 is a plan view of the packaging body, FIG. 2 is a front view of the packaging body, and FIG. 3 is a partially enlarged view of the protruding portion of the heat seal portion formed on the flange portion of the packaging body. FIG. 4 is a schematic cross-sectional view taken along the line in FIG. 3 when the package is cooked in a microwave oven. Fig. 5 shows a schematic cross-sectional view along the shoreline of Fig. 3 when the package is cooked in a microwave oven. Furthermore, FIG. 6 shows a partially enlarged view of the flange portion that forms the protruding portion of the steam release seal portion before heat sealing the lid. FIG. 7 shows a partially enlarged view of a sealing tool used when heat-sealing the lid to the flange portion. Fig. 8 shows a partially enlarged view of the sealing surface of the sealing tool used when the knurled seal is applied to the flange part where the lid is heat-sealed.
[0025] この電子レンジ調理用包装体 1は、フランジ部 2を有する角形の容器本体 3に米飯 等の食品（図示せず）を充填し、該フランジ部 2に蓋体 4をヒートシールして密封したも のである。  [0025] The microwave cooking packaging 1 includes a rectangular container body 3 having a flange 2 filled with food (not shown) such as cooked rice, and the lid 4 is heat-sealed to the flange 2. It is sealed.
そして、容器の 1つのコーナー部において、フランジ部の一部にヒートシール部 5を 挟んで、ヒートシール部 5の内側及び外側にそれぞれ独立した凹部 6及び 7を設ける ことによって、ヒートシール部 5に容器の内側方向に向力、う V字状の突出部 8を形成し 、蒸気抜きシール部としている。また、蒸気抜きシール部 8の外側の凹部 7には、フラ ンジ部 2と蓋体 4を点状にヒートシールすることにより、補助シール部として 1つの円形 のスポットシール 9を形成して!/、る。 Then, at one corner of the container, the heat seal part 5 is sandwiched by a part of the flange part, and independent recesses 6 and 7 are provided on the inside and outside of the heat seal part 5, respectively. A V-shaped protruding portion 8 is formed in the inner direction of the container to form a steam vent seal portion. In addition, the flange portion 2 and the lid body 4 are heat-sealed in a dot shape in the concave portion 7 outside the steam release seal portion 8, thereby forming a single circular shape as an auxiliary seal portion. Form a spot seal 9!
[0026] また、この蒸気抜きシール部 8と対向するコーナー部では、ヒートシール部 5を容器 外側方向に向けて V字状に突出させて、電子レンジによる調理後に蓋体 4を開封す るための開封部 12を形成している。  [0026] Further, at the corner portion facing the steam release seal portion 8, the heat seal portion 5 is projected in a V shape toward the outside of the container, and the lid body 4 is opened after cooking by the microwave oven. The opening portion 12 is formed.
そして、蒸気抜きシール部 8の外側凹部 7及び内側凹部 6以外のヒートシール部 5 の内側及び外側には全周にわたってローレットシール 13、 13を施すことにより、蓋体 4がめくれ上がるのを防止している。このローレットシール 13は、電子レンジによる調 理後に蓋体 4を開封部 12から開封するのを容易にするために、開封部 12から容器 外側端部に到る部位 14には設けて!/、な!/、。  Then, knurling seals 13 and 13 are applied to the inside and outside of the heat seal portion 5 other than the outer recess 7 and the inner recess 6 of the steam release seal portion 8 to prevent the lid 4 from turning up. ing. The knurled seal 13 is provided at a portion 14 from the opening 12 to the outer end of the container in order to make it easy to open the lid 4 from the opening 12 after being controlled by a microwave oven! /, What! /
[0027] この蒸気抜きシール部 8は、図 6に示すフランジ部 2のコーナー部に凹部 6及び 7を 設けた容器本体 3に蓋体 4を載置し、図 7に示すシール工具 10を使用してヒートシ一 ルすることにより形成すること力 Sできる。補助シール部 9は、コーナー部に外側凹部 7 を形成する際に、部分的に凹部加工をしないスポット状の部分を残し、シール面が平 坦なシール工具 10を使用して蒸気抜きシール部 8を形成するのと同時に設けること 力 Sできる。また、凹部 7に補助シール部 9に対応する部分を残さずに全面的に凹部加 ェを行い、シール工具 10の補助シール部 9に対応する部分を部分的に高くしてヒー トシールすることにより、補助シール部 9を形成するようにしてもよい。  [0027] The steam release seal portion 8 uses the sealing tool 10 shown in Fig. 7 by placing the lid body 4 on the container body 3 provided with the recesses 6 and 7 in the corner portion of the flange portion 2 shown in Fig. 6. Then, forming force S can be achieved by heat sealing. When forming the outer recess 7 in the corner portion, the auxiliary seal portion 9 leaves a spot-like portion that is not partially recessed, and uses a sealing tool 10 with a flat sealing surface to remove the steam-sealed seal portion 8. Can be provided at the same time as forming S. In addition, the concave portion 7 is subjected to the concave portion entirely without leaving the portion corresponding to the auxiliary seal portion 9, and the portion corresponding to the auxiliary seal portion 9 of the sealing tool 10 is partially raised to perform heat sealing. Alternatively, the auxiliary seal portion 9 may be formed.
その際に、フランジ部の凹部 6及び 7に挟まれた部分（ヒートシール予定部）とシー ル工具 10により蓋体 4が挟まれてヒートシールされることによってヒートシール部 5に 突出部 8と補助シール部 9が同時に形成される。したがって、従来の電子レンジ調理 用包装体のように、突出部を形成する際に精確な位置あわせを必要とせずに確実に 位置ずれのない突出部 8を形成することができる。  At that time, the cover 4 is sandwiched between the portion sandwiched between the recesses 6 and 7 of the flange portion (scheduled heat seal portion) and the sealing tool 10 and heat sealed, so that the protrusion 8 and the heat seal portion 5 The auxiliary seal portion 9 is formed at the same time. Therefore, unlike the conventional microwave cooking package, the protruding portion 8 can be formed without misalignment without the need for precise alignment when forming the protruding portion.
[0028] フランジ部 2に設ける凹部 6及び 7の深さは、同じ深さとしてもよいし異なる深さとして もよい。凹部の深さは、通常は 0. 05〜3mm程度、特に 0. 1〜0. 5mm程度とするこ とが好ましい。  [0028] The depths of the recesses 6 and 7 provided in the flange portion 2 may be the same depth or different depths. The depth of the recess is usually about 0.05 to 3 mm, particularly preferably about 0.1 to 0.5 mm.
突出部 8のシール幅は、周縁ヒートシール部 5と同じ、或いはこれより幅狭に構成す ること力 Sでき、通常は 0. 5〜5mm程度、特に l〜3mm程度とすることが好ましい。突 出部 8のシール強度は、 5〜30N/15mm程度とすることが好ましい。なお、この場 合のシール強度は、突出部 8のシール幅を 15mm幅に換算した値を意味する。 The seal width of the protruding portion 8 can be the same as or narrower than that of the peripheral heat seal portion 5, and is preferably about 0.5 to 5 mm, particularly preferably about 1 to 3 mm. The seal strength of the protruding portion 8 is preferably about 5 to 30 N / 15 mm. This place The combined seal strength means a value obtained by converting the seal width of the protrusion 8 into a width of 15 mm.
[0029] 補助シール部 9は、蒸気抜きシール部 8の外側部 7だけではなぐ包装体の密封性 を向上させたり外観を改善するために、蒸気抜きシール部 8の内側部 6にも設けるこ とができる。補助シール部 9を内側部 6に設ける場合には、蒸気の排出を阻害しない ように、シールの大きさ及び数は最小限にとどめることが好ましい。 [0029] The auxiliary seal part 9 is also provided on the inner part 6 of the steam release seal part 8 in order to improve the sealing performance and the appearance of the package, which is not limited to the outer part 7 of the steam release seal part 8 alone. You can. When the auxiliary seal portion 9 is provided on the inner portion 6, it is preferable to minimize the size and number of seals so as not to hinder the discharge of steam.
補助シール部 9の大きさは容器の大きさに合わせて適宜選択することができる。補 助シール部を点状のスポットシールとして形成する場合には、例えば直径が 5mm以 下、通常は 0. 3〜2mm程度とすることができる。また、その数は合計で 1〜； 10個程 度、好ましくは 5個以下である。補助シール部の形状や配列には特に制限はなぐ円 形、三角形、四角形、オーパル状等、任意に選択することができる。  The size of the auxiliary seal portion 9 can be appropriately selected according to the size of the container. When the auxiliary seal portion is formed as a spot-like spot seal, the diameter can be, for example, 5 mm or less, usually about 0.3 to 2 mm. The total number thereof is 1 to about 10; preferably 5 or less. The shape and arrangement of the auxiliary seal part can be arbitrarily selected from a circular shape, a triangular shape, a quadrangular shape, an opal shape, and the like, which are not particularly limited.
また、補助シール部は、例えば図 16にみられるように、ある程度の面積を有するシ ール部として形成してもよぐこの場合はローレットシール部と同様のシール形態とす ること力 Sでさる。  Further, for example, as shown in FIG. 16, the auxiliary seal portion may be formed as a seal portion having a certain area. In this case, the auxiliary seal portion may have a seal form similar to the knurled seal portion. Monkey.
[0030] 電子レンジ調理用包装体に設けるローレットシール 13は、容器本体のフランジ部 2 と蓋体 4をヒートシールすることにより密封した後に、さらにこのシール面に碁盤目状 に配列した多数の凸部 20を有するシール工具 18を使用して形成することができる（ 図 8参照）。この凸部 20の大きさは容器の大きさに合わせて適宜選択することができ るが、通常は凸部の 1辺が 0. 3〜； 1mm程度で、ピッチが 0. 7〜； 1. 0mm程度とする ことが好ましい。ローレットシール 13を設ける位置は、通常はフランジ部 2の全面、す なわち周縁ヒートシール部 5を含めてその内側及び外側に設ける。その際に、ヒート シール部 5を含むフランジ部 2の全面にローレットシールを施してもよぐヒートシール 部 5上を省いた形でローレットシールを施してもよい。また、ヒートシール部 5の外側の みにローレットシールを設けるようにしてもよい。  [0030] The knurled seal 13 provided on the microwave oven packaging body is sealed by heat-sealing the flange portion 2 and the lid body 4 of the container body, and then a plurality of protrusions arranged in a grid pattern on the seal surface. It can be formed using a sealing tool 18 having a part 20 (see FIG. 8). The size of the convex portion 20 can be appropriately selected according to the size of the container, but usually one side of the convex portion is about 0.3 to 1 mm and the pitch is about 0.7 to 1. It is preferably about 0 mm. The position where the knurled seal 13 is provided is usually provided on the entire surface of the flange portion 2, that is, on the inner side and the outer side including the peripheral heat seal portion 5. At that time, the knurled seal may be applied in a form in which the knurled seal may be applied to the entire surface of the flange portion 2 including the heat seal portion 5 or the heat seal portion 5 may be omitted. Alternatively, a knurled seal may be provided only outside the heat seal portion 5.
このローレットシール 13を設けることによって、フランジ部 2に蓋体 4をヒートシールし て密封した電子レンジ調理用包装体 1の蓋体外側端部のめくれ上がりを防止する。 その結果、流通'販売過程において蓋体 4とフランジ部 2の間に異物が混入するのを 防止すること力でさる。  By providing the knurled seal 13, the outer end of the lid body of the microwave oven cooking package 1, which is sealed by heat-sealing the lid body 4 to the flange portion 2, is prevented from turning up. As a result, it is possible to prevent foreign matter from entering between the lid 4 and the flange 2 in the distribution / sales process.
[0031] この電子レンジ調理用包装体 1を電子レンジで加熱調理すると、容器内に充填した 米飯等の食品から発生する水蒸気等によって容器の内圧が上昇し、蓋体 4が外側に 向って膨張する。そして、コーナー部に設けた突出部 8では、容器の内側方向に向 けて U字状乃至 V字状に突出する先端部からヒートシール部の剥離が始まる（図 4参 照）。その際に、ヒートシール部 5の他の部分ではヒートシール部の剥離は生じず、容 器の内圧は維持され、容器内に充填した米飯等の食品は充分な蒸らし効果を受け て食味が向上する。 [0031] When the microwave cooking package 1 was cooked in a microwave oven, it was filled in a container. The internal pressure of the container rises due to water vapor generated from food such as cooked rice, and the lid 4 expands outward. Then, in the protruding portion 8 provided at the corner portion, the heat seal portion starts to peel from the tip portion protruding in a U-shape or V-shape toward the inside of the container (see FIG. 4). At that time, the heat seal part 5 does not peel at other parts of the heat seal part 5, the internal pressure of the container is maintained, and the food such as cooked rice filled in the container is sufficiently steamed to improve the taste. To do.
[0032] 容器の内圧がさらに上昇し、突出部 8の先端部における剥離がヒートシール部の外 縁に達すると、ヒートシール部が開口する。そして、この開口部から高温の水蒸気が 吹き出し、容器内の内圧が低下して内容物の調理が完了する。調理完了後の包装 体は、電子レンジから取り出して突出部 8と対向するコーナー部に設けた開封部 12 から蓋体 4を手で開封して、そのまま内容物を食することができる。このとき、開口した 突出部 8からは、高温の水蒸気が吹き出している。し力、しながら、この水蒸気は開封 部 12の反対方向に向って吹き出すために、蓋体 4を安全に開封することができる。ま た、本発明の電子レンジ調理用包装体は、突出部 8において、ヒートシール部が自動 開口した後に容器の内圧が低下するまでの間も、容器の内圧をある程度維持するこ とができるので、内容物に充分な蒸らし効果を与えることができる。  [0032] When the internal pressure of the container further rises and the peeling at the tip of the protruding portion 8 reaches the outer edge of the heat seal portion, the heat seal portion opens. Then, high-temperature steam blows out from the opening, and the internal pressure in the container is lowered, and cooking of the contents is completed. After the cooking is completed, the package body can be taken out of the microwave oven, and the lid body 4 can be opened by hand from the opening portion 12 provided at the corner portion facing the protruding portion 8, and the contents can be eaten as it is. At this time, high-temperature water vapor is blown out from the projecting portion 8 that is opened. However, since the water vapor blows out in the direction opposite to the opening 12, the lid 4 can be safely opened. In addition, the package for microwave oven cooking according to the present invention can maintain the internal pressure of the container to some extent during the protrusion 8 until the internal pressure of the container decreases after the heat seal part automatically opens. The contents can be given a sufficient steaming effect.
[0033] 図 9は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜きシ ール部の部分拡大図である。  [0033] Fig. 9 is a partially enlarged view of a steam release seal portion of the package, showing another example of the microwave cooking package of the present invention.
この電子レンジ調理用包装体 11では、蒸気抜きシール部 8の外側の凹部 7に 2つ のスポット状の補助シール部 9、 9を設けたものである。包装体 11の他の構成は、図 1 の包装体 1と同様である。  In the microwave oven cooking package 11, two spot-like auxiliary seal portions 9, 9 are provided in the concave portion 7 outside the steam release seal portion 8. The other structure of the package 11 is the same as that of the package 1 in FIG.
[0034] 図 10は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜き シール部の部分拡大図である。  [0034] Fig. 10 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
この電子レンジ調理用包装体 21では、蒸気抜きシール部 8の外側の凹部 7に合計 10個の小さなスポット状の補助シール部 9を設けたものである。包装体 21の他の構 成は、図 1の包装体 1と同様である。  In the microwave oven cooking package 21, a total of ten small spot-like auxiliary seal portions 9 are provided in the concave portion 7 outside the steam release seal portion 8. The other structure of the package 21 is the same as that of the package 1 in FIG.
[0035] 図 11は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜き シール部の部分拡大図である。 この電子レンジ調理用包装体 31では、蒸気抜きシール部 8の外側の凹部 7に 1つ のやや変形したオーバル状の補助シール部 9を設けたものである。包装体 31の他の 構成は、図 1の包装体 1と同様である。 [0035] FIG. 11 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention. In the microwave oven cooking packaging 31, one slightly deformed oval auxiliary seal portion 9 is provided in the concave portion 7 outside the steam release seal portion 8. Other configurations of the package 31 are the same as those of the package 1 in FIG.
[0036] 図 12は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜き シール部の部分拡大図である。  FIG. 12 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave cooking package of the present invention.
この電子レンジ調理用包装体 41では、蒸気抜きシール部 8の外側の凹部 7に 1つ の楕円形の補助シール部 9を設けるとともに、蒸気抜きシール部 8の内側の凹部 6に も 2つの楕円形の補助シール部 9、 9を設けたものである。包装体 41の他の構成は、 図 1の包装体 1と同様である。  In this microwave oven cooking packaging 41, one oval auxiliary seal 9 is provided in the recess 7 outside the steam release seal 8, and two ellipses are also provided in the recess 6 inside the steam release seal 8. Auxiliary seals 9 and 9 are provided. Other configurations of the package 41 are the same as those of the package 1 in FIG.
[0037] 図 13は、従来の電子レンジ調理用包装体の 1例を示す平面図である。この包装体 51では、容器の 1つのコーナー部において、ヒートシール部 5に容器の内側方向に 向かう V字状の突出部 8を形成して、蒸気抜きシール部としている。また、この蒸気抜 きシール部 8と対向するコーナー部では、ヒートシール部 5を容器外側方向に向けて V字状に突出させて、電子レンジによる調理後に蓋体 4を開封するための開封部 12 を形成している。  FIG. 13 is a plan view showing an example of a conventional microwave cooking package. In this package 51, at one corner portion of the container, a V-shaped protruding portion 8 directed toward the inner side of the container is formed in the heat seal portion 5 to form a steam release seal portion. In addition, at the corner portion facing the vapor vent seal portion 8, the heat seal portion 5 is projected in a V shape toward the outer side of the container, and an opening portion for opening the lid 4 after cooking with a microwave oven. 12 is formed.
そして、ヒートシール部 5の内側及び外側には全周にわたってローレットシール 13、 13を施すことにより、蓋体 4がめくれ上がるのを防止している。このローレットシール 1 3は、包装体 51を電子レンジで調理した後に、蓋体 4を開封部 12から開封するのを 容易にするために、開封部 12から容器外側端部に到る部位 14には設けていない。  Then, the knurled seals 13 and 13 are applied to the inner and outer sides of the heat seal portion 5 over the entire circumference to prevent the lid body 4 from turning up. This knurled seal 13 is provided on a portion 14 extending from the opening 12 to the outer end of the container in order to make it easy to open the lid 4 from the opening 12 after the package 51 is cooked in a microwave oven. Is not provided.
[0038] 図 14及び図 15は、本発明の電子レンジ調理用包装体の他の例を示す図である。 FIG. 14 and FIG. 15 are diagrams showing another example of the microwave oven cooking package according to the present invention.
図 14は包装体の平面図であり、そして図 15は包装体の正面図である。  FIG. 14 is a plan view of the package, and FIG. 15 is a front view of the package.
この電子レンジ調理用包装体 61は、フランジ部 2を有する横断面が円形のカップ型 容器本体 3に米飯等の食品（図示せず）を充填し、該フランジ部 2に蓋体 4をヒートシ ールして密封したものである。このフランジ部 2には、対向する位置に一対の幅広部 3 2、 33が設けられている。一方の幅広部 32にはヒートシール部 5を挟んで凹部 6及び 7を設けることによって、ヒートシール部 5に容器の内側方向に向力、う V字状の突出部 8を設けて蒸気抜きシール部 8を形成している。そして、蒸気抜きシール部 8の外側 の凹部 7には 1つの円形の補助シール部 9を設けてある。 また、対向する幅広部 33では、ヒートシール部 5を容器外側方向に向けて V字状に 突出させて、蓋体 4を開封するための開封部 12を形成している。 This microwave oven cooking packaging body 61 has a cup-shaped container body 3 having a flange portion 2 with a circular cross section filled with food (not shown) such as cooked rice, and the lid portion 4 is attached to the flange portion 2 with a heat sheet. And sealed. The flange portion 2 is provided with a pair of wide portions 3 2 and 33 at opposing positions. One wide portion 32 is provided with recesses 6 and 7 sandwiching the heat seal portion 5 so that the heat seal portion 5 is provided with a V-shaped protruding portion 8 in the direction toward the inside of the container, and a steam release seal. Part 8 is formed. Then, one circular auxiliary seal portion 9 is provided in the concave portion 7 outside the steam release seal portion 8. In the wide portion 33 that faces the heat seal portion 5, the heat seal portion 5 protrudes in a V shape toward the outer side of the container, thereby forming an opening portion 12 for opening the lid 4.
[0039] 図 16は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜き シール部の部分拡大図である。 [0039] Fig. 16 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
この電子レンジ調理用包装体 71では、蒸気抜きシール部 8の外側の凹部 7に、 1つ の略三角形の補助シール部 9をヒートシール部 5及びローレットシール部 13から分離 した状態に設けたものである。包装体 71の他の構成は、図 1の包装体 1と同様である In this microwave cooking packaging 71, a substantially triangular auxiliary seal portion 9 is provided in a recess 7 on the outer side of the steam release seal portion 8 so as to be separated from the heat seal portion 5 and the knurled seal portion 13. It is. Other configurations of the package 71 are the same as those of the package 1 in FIG.
〇 Yes
この包装体 71では、電子レンジ加熱により容器の内圧が上昇し、ヒートシール部 5 の突出部 8の先端部から開始した剥離力 Sヒートシール部 5の外縁に達すると、ヒートシ ール部 5が開口する。この開口部からは高温の水蒸気が吹き出し、凹部 7を通路とし て容器の外側に排出される。この補助シール部 9は、ローレットシール部 13と同時に 形成すること力できる。補助シール部 9の形状及び大きさは、容器の大きさに合わせ て適宜選択することができる。  In this package 71, when the internal pressure of the container rises due to heating in the microwave oven and reaches the outer edge of the heat seal part 5 at the peeling force S that starts from the tip of the protruding part 8 of the heat seal part 5, the heat seal part 5 Open. High-temperature water vapor blows out from the opening, and is discharged outside the container using the recess 7 as a passage. The auxiliary seal portion 9 can be formed simultaneously with the knurled seal portion 13. The shape and size of the auxiliary seal portion 9 can be appropriately selected according to the size of the container.
[0040] 図 17は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜き シール部の部分拡大図である。  FIG. 17 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
この電子レンジ調理用包装体 81では、蒸気抜きシール部 8の外側の凹部 7に、 2つ の補助シール部 9、 9をヒートシール部 5に接続させて設けたものである。包装体 81の 他の構成は、図 1の包装体 1と同様である。  In this microwave cooking packaging 81, two auxiliary seal portions 9, 9 are connected to the heat seal portion 5 in the concave portion 7 outside the steam release seal portion 8. Other configurations of the package 81 are the same as those of the package 1 shown in FIG.
[0041] 図 18は、本発明の電子レンジ調理用包装体の他の例を示す、包装体の蒸気抜き シール部の部分拡大図である。  [0041] FIG. 18 is a partially enlarged view of the steam release seal portion of the package, showing another example of the microwave oven package of the present invention.
この電子レンジ調理用包装体 91では、蒸気抜きシール部 8の外側の凹部 7に、 2つ の補助シール部 9、 9をヒートシール部 5及び外側ローレットシール部 13に接続させ て設けたものである。包装体 81の他の構成は、図 1の包装体 1と同様である。  In this microwave oven cooking packaging 91, two auxiliary seal portions 9, 9 are connected to the heat seal portion 5 and the outer knurled seal portion 13 in the concave portion 7 outside the steam release seal portion 8. is there. Other configurations of the package 81 are the same as those of the package 1 in FIG.
[0042] 上記の各例では、蒸気抜きシール部となるフランジ部の内側及び外側にそれぞれ 独立した凹部を設けることにより容器の内側方向に向力、う突出部 (蒸気抜きシール部 )を形成した電子レンジ調理用包装体について説明した。し力もながら、フランジ部に このような凹部を設けずに、単にフランジ部と蓋体をヒートシールすることにより蒸気 抜きシール部となる突出部を形成してもよい。また、容器本体或いは蓋体の形状は、 角型或いはカップ型に限定されず、例えば長円形にする等適宜変更することができ る。また、その寸法も、任意に設定できるものであることは、言うまでもない。 [0042] In each of the above examples, by providing independent recesses on the inside and outside of the flange portion serving as the steam release seal portion, a directing force and a protruding portion (steam release seal portion) are formed in the inner direction of the container. The packaging for microwave oven cooking was demonstrated. However, without providing such a recess in the flange portion, steam is simply sealed by heat-sealing the flange portion and the lid. You may form the protrusion part used as a punching seal part. Further, the shape of the container main body or the lid is not limited to a square shape or a cup shape, and can be appropriately changed, for example, to have an oval shape. Moreover, it cannot be overemphasized that the dimension can also be set arbitrarily.
容器本体や蓋体は、定法によって製造することができる。例えば、容器本体の成形 方法としては、真空成形、圧空成形、真空圧空成形、射出成形等を採用することが できる。  A container main body and a cover body can be manufactured by a conventional method. For example, as a method for forming the container body, vacuum forming, pressure forming, vacuum / pressure forming, injection molding, or the like can be employed.
実施例  Example
[0043] 以下、実施例により本発明の電子レンジ調理用包装体についてさらに説明する力 以下の具体例は、本発明を限定するものではない。  [0043] Hereinafter, the ability to further explain the microwave oven packaging body of the present invention by examples, the following specific examples do not limit the present invention.
(実施例 1)  (Example 1)
外層から順に、メルトインデックス（Ml) 0· 5のポリプロピレンにチタン白顔料を添カロ したポリプロピレン樹脂外層（厚さ 350 ,1 m) /無水マレイン酸変性ポリプロピレンから なる接着剤層（厚さ 20 m) /エチレン ビュルアルコール共重合体からなるバリヤ 一層 (厚さ 60 m) /上記と同じ接着剤層（厚さ 20 m) /MI = 0. 5のポリプロピレ ン樹脂内層（厚さ 350 m)からなる、 3種 5層構成で総厚さ 0. 8mmの多層シートを 、通常の共押出し成形により作製した。  In order from the outer layer, an outer layer of polypropylene resin (thickness 350,1 m) / titanium white pigment added to polypropylene with a melt index (Ml) 0.5 · 5 / adhesive layer made of maleic anhydride-modified polypropylene (thickness 20 m) / Barrier made of ethylene butyl alcohol copolymer (thickness 60 m) / Same adhesive layer (thickness 20 m) as above / Polypropylene resin inner layer (thickness 350 m) with MI = 0.5, A multilayer sheet of 3 types and 5 layers with a total thickness of 0.8 mm was produced by ordinary coextrusion molding.
この多層シートを使用し、通常の真空'圧空成形機により、容器外寸 156mm X 13 3mm、高さ 29mm (内容積約 340ml)の、図 1に示す形状を有するフランジ付角形 容器を成形した (フランジ幅：直線部 8mm、コーナー部最大 17mm)。この容器のコ ーナ一部のフランジ部 2には、蓋体とのヒートシール部に該当する部分を挟んで内側 及び外側に深さ 0. 5mmの独立した凹部 6及び 7を成形時に形成した。その際に、外 側凹部 7には部分的に凹部加工をしない直径 3mmの円形のスポット状の部分を残し た。  Using this multilayer sheet, a square container with a flange having the shape shown in Fig. 1 and having an outer dimension of 156 mm x 133 mm and a height of 29 mm (inner volume of about 340 ml) was formed by a normal vacuum / pressure forming machine ( (Flange width: straight line 8mm, corner maximum 17mm). In the flange part 2 at the corner of this container, independent recesses 6 and 7 having a depth of 0.5 mm are formed on the inside and outside of the part corresponding to the heat seal part with the lid at the time of molding. . At that time, a circular spot-like portion having a diameter of 3 mm was left in the outer concave portion 7 and the concave portion was not partially processed.
[0044] 一方、厚さ 12 πιの 2軸延伸ポリエステルフィルム（外層）、厚さ 15 mの 2軸延伸 ナイロンフィルム（中間層）、厚さ 50〃 mのエチレン ·プロピレン系複合材料からなる ポリプロピレン系フィルム（内層）を使用し、各樹脂層間にポリウレタン系接着剤を介 在させて、次の手順でドライラミネーシヨンにより蓋材を構成する積層体を構成した。 はじめに、外層材にグラビアロール等により接着剤を塗布し、温度 80〜； 100°Cの乾 燥オーブン中で、溶剤を蒸発、乾燥させた。つぎに、粘着状態となった接着剤層と中 間層材を貼り合わせ、加熱された金属ロールとゴムロールにより圧着した後に、冷却 金属ロールを通過させて巻き取る。同様の手順で、この積層体に内層材を貼り合わ せ、所望の寸法に切断して蓋体を構成した。 [0044] On the other hand, a 12-πι biaxially stretched polyester film (outer layer), a 15 m thick biaxially stretched nylon film (intermediate layer), and a 50 μm thick ethylene / propylene composite material A film (inner layer) was used, and a polyurethane adhesive was interposed between each resin layer, and a laminate was formed by dry lamination to form a lid material according to the following procedure. First, apply an adhesive to the outer layer material using a gravure roll, etc., and dry at a temperature of 80 to 100 ° C. The solvent was evaporated and dried in a drying oven. Next, the adhesive layer and the intermediate layer material that are in a sticky state are bonded together, and after crimping with a heated metal roll and a rubber roll, the cooled metal roll is passed through and wound up. In the same procedure, the inner layer material was bonded to this laminate, and cut into a desired size to form a lid.
[0045] 無菌包装充填ラインを使用して、上記容器に無菌米飯 200gを充填した。つぎに、 図 7のシール工具 10を使用して、第 1工程で容器のフランジ部 2に上記蓋体 4をヒー トシールして密封することにより、シール幅 3mmの周縁シール部 5、および該周縁シ ール部 5から約 5mm内側に突出した V字状の突出部 8からなる蒸気抜きシール部、 並びに該蒸気抜きシール部 8の外側にスポット状の補助シール部 9を形成した。また 、他のコーナー部には、図 1に見られるように、周縁シール部 5を容器の外方向に突 出させて V字状の角部を設け開封部 12を形成した。  [0045] Using a sterile packaging and filling line, 200 g of sterile cooked rice was filled in the container. Next, by using the sealing tool 10 of FIG. 7 and sealing the lid 4 to the flange portion 2 of the container in the first step by heat sealing, the peripheral seal portion 5 having a seal width of 3 mm, and the peripheral portion A steam vent seal portion composed of a V-shaped projecting portion 8 projecting inward from the seal portion 5 by about 5 mm, and a spot-like auxiliary seal portion 9 were formed outside the steam vent seal portion 8. In addition, as shown in FIG. 1, a peripheral seal portion 5 protrudes outward from the container to form a V-shaped corner portion at the other corner portion to form an opening portion 12.
ついで、図 8のシール工具 18を使用して、第 2工程で蒸気抜きシール部 8の内側及 び外側の凹部 6及び 7、並びに開封部 12の外側部 14を除いて、フランジ部 2の全周 にわたつてローレットシールを施すことにより電子レンジ調理用包装体を得た。  Next, using the sealing tool 18 shown in FIG. 8, in the second step, all of the flange part 2 is removed except for the inner and outer recesses 6 and 7 of the steam release seal part 8 and the outer part 14 of the opening part 12. A microwave cooking packaging was obtained by applying a knurled seal over the circumference.
[0046] (実施例 2)  [Example 2]
実施例 1において、図 12に示すように、スポット状の補助シール部 9を蒸気抜きシ ール部 8の外側 7及び内側 6に合計 3個設けて角型容器を形成した以外は、実施例 1と同様にして容器に無菌米飯 200gを充填密封することにより、電子レンジ調理用 包装体を得た。  In Example 1, as shown in FIG. 12, except that a total of three spot-like auxiliary seal portions 9 were provided on the outer side 7 and the inner side 6 of the steam release seal portion 8 to form a square container. In the same manner as in 1, the container was filled and sealed with 200 g of sterile cooked rice to obtain a microwave cooking package.
[0047] (実施例 3) [0047] (Example 3)
実施例 1において、図 16に示すように、略三角形状の補助シール部 9を蒸気抜きシ ール部 8の外側凹部 7に 1個設けて角型容器を形成した以外は、実施例 1と同様にし て容器に無菌米飯 200gを充填密封することにより、電子レンジ調理用包装体を得た  In Example 1, as shown in FIG. 16, except that a substantially triangular auxiliary seal part 9 is provided in the outer recessed part 7 of the steam release seal part 8 to form a square container, the same as in Example 1. Similarly, 200 g of sterile cooked rice was filled and sealed in a container to obtain a microwave cooking packaging.
[0048] (実施例 4) [0048] (Example 4)
実施例 1において、図 17に示すように、蒸気抜きシール部 8の外側の凹部 7に、 2 つの補助シール部 9、 9をヒートシール部 5に接続させて設けて角型容器を形成した 以外は、実施例 1と同様にして容器に無菌米飯 200gを充填密封することにより、電 子レンジ調理用包装体を得た。 In Example 1, as shown in FIG. 17, except that a square container is formed by providing two auxiliary seal portions 9 and 9 connected to the heat seal portion 5 in the recess 7 outside the steam release seal portion 8. As in Example 1, the container was filled and sealed with 200 g of sterile cooked rice. A package for cooking the child range was obtained.
[0049] (比較例 1) [0049] (Comparative Example 1)
図 13に示すように、蒸気抜きシール部 8の外側に補助シール部を形成せずにフラ ンジ部 2に蓋体 4をヒートシールし、ついで開封部 12の外側部 14を除いてフランジ部 2の全周にわたってローレットシールを施した以外は、実施例 1と同様にして容器に 無菌米飯 200gを充填密封した電子レンジ調理用包装体を得た。  As shown in FIG. 13, the lid 4 is heat-sealed to the flange 2 without forming an auxiliary seal on the outside of the steam release seal 8, and then the flange 2 except for the outer 14 of the opening 12 A package for microwave oven cooking was obtained in the same manner as in Example 1 except that 200 g of sterile cooked rice was filled and sealed in a container, except that a knurled seal was applied over the entire circumference.
[0050] 上記の各例で得られた、無菌米飯を充填密封した包装体各 20個を、 600Wの電子 レンジ内で加熱調理し、所定時間内に蒸気抜きシール部から蒸気が抜けるかどうか を確認した結果を表 1に示す。  [0050] Each of the 20 packages packed and sealed with sterile cooked rice obtained in each of the above examples was cooked in a 600 W microwave oven to determine whether steam could escape from the steam vent seal within a predetermined time. The confirmed results are shown in Table 1.
また、該包装体各 10個を 5°Cの雰囲気で、 120cmの高さから連続 10回倒立落下 及び側面落下させ、シール部の破損の有無を確認した結果を表 1に示す。  In addition, Table 10 shows the results of checking the presence or absence of breakage of the seals by dropping each of the 10 packagings 10 times in succession from 120 cm in a 5 ° C atmosphere and by dropping them 10 times.
[0051] これらの容器について、下記の方法により周縁シール部 5の容器内側から測定した シール強度（平均値）はいずれも 18N/15mmであった。また、開封用シール部 12 の外側から測定した開封強度（平均値）は!/、ずれも 12N/カップであった。  [0051] For these containers, the seal strength (average value) measured from the inner side of the peripheral seal portion 5 by the following method was 18 N / 15 mm. Further, the opening strength (average value) measured from the outside of the opening sealing portion 12 was! /, And the deviation was 12 N / cup.
(シール強度）  (Seal strength)
容器を容器ホルダーに固定し、シール部両側で蓋材を 15mm幅に切断した。つい で、容器内側部分の蓋材を引張り試験機のチャックに固定し、 300mm/分の速度 で 90° 方向に上方に引張り最大荷重を測定した。  The container was fixed to the container holder, and the lid was cut to 15 mm width on both sides of the seal part. Next, the lid of the inner part of the container was fixed to the chuck of the tensile tester, and the maximum load was measured by pulling upward in the 90 ° direction at a speed of 300 mm / min.
(開封強度）  (Opening strength)
容器のシール面を 45° 傾けて容器ホルダーに固定し、開封部にあたる外側突出 部の蓋材をチャックに固定し、上記と同様の速度で上方に引張り最大荷重を測定し た。  The container sealing surface was tilted 45 ° and fixed to the container holder, and the lid of the outer protrusion corresponding to the opening was fixed to the chuck, and the maximum load was measured by pulling upward at the same speed as above.
[0052] [表 1]
Figure imgf000021_0001
表 1に示すように、本発明の電子レンジ調理用包装体は、電子レンジ加熱による内 圧の上昇とともに蒸気抜き部となる突出部が徐々に後退し、所定時間内に、非常に スムーズにかつ確実に蒸気抜きが行われた。この際、蒸気抜け状態が良いために、 容器変形も小さく抑えられた。また、落下試験でもシール部が後退したり破損すること はなかった。 [0052] [Table 1]
Figure imgf000021_0001
As shown in Table 1, in the microwave oven cooking package according to the present invention, the protruding portion that becomes the steam release portion gradually recedes as the internal pressure rises due to the microwave heating, and it is very smoothly and within a predetermined time. Vapor was surely removed. At this time, because the steam escape state was good, the container deformation was also kept small. In the drop test, the seal did not move backward or break.
また、本発明の電子レンジ調理用包装体では、従来の蓋材を剥がしてから電子レ ンジ加熱するものに比べ、蒸気が抜けるまで密封性を維持することができるので、蒸 らし効果で米飯の食味が向上した。  In addition, in the microwave oven cooking package according to the present invention, the sealing property can be maintained until the steam is removed, compared to the conventional microwave oven heating after peeling off the lid, so that the steaming effect of the cooked rice The taste was improved.
一方、比較例 1の包装体は、蒸気抜きシール部の少なくとも外側に補助シール部を 設けずに、蒸気抜きシール部の内側及び外側を含めて、周縁ヒートシール部内外の 全周にわたってローレットシールを施したものである。この包装体では、電子レンジ加 熱で蒸気抜きシール部以外の位置力 蒸気が抜けたり、所定時間内に蒸気抜けしな いものがあった。また、蒸気抜けが遅いために、容器の変形が戻りにくかった。  On the other hand, the package of Comparative Example 1 does not provide an auxiliary seal part at least outside the steam release seal part, and provides a knurled seal over the entire circumference inside and outside the peripheral heat seal part, including the inside and outside of the steam release seal part. It has been applied. In some of these packages, steam with a position force other than the steam vent seal part escapes due to heating in the microwave oven, or steam does not escape within a predetermined time. Moreover, since the steam escape was slow, the deformation of the container was difficult to return.

Claims

請求の範囲 The scope of the claims
[1] フランジ部を有する合成樹脂製の容器本体に内容物を充填し、該フランジ部に蓋 体をヒートシールして密封した電子レンジ調理用包装体にお!/、て、該ヒートシール部 に容器の内側方向に向力、う突出部を設けることによって蒸気抜きシール部を形成し、 蒸気抜きシール部から容器外側端部に到る部位にフランジ部と蓋体をヒートシール することにより少なくとも 1つの補助シール部を設けるとともに、前記蒸気抜きシール 部の外側部位及び内側部位以外の領域にはローレットシールを施したことを特徴と する電子レンジ調理用包装体。  [1] A microwave oven packaging body in which a synthetic resin container body having a flange portion is filled with contents, and a lid body is heat sealed to the flange portion to seal the heat seal portion. A steam vent seal portion is formed by providing a protrusion and a protruding portion in the inner direction of the container, and at least the flange portion and the lid body are heat sealed to a portion from the steam vent seal portion to the container outer end. A microwave oven packaging body characterized in that one auxiliary seal portion is provided and a knurled seal is provided in a region other than the outer portion and the inner portion of the steam release seal portion.
[2] 前記蒸気抜きシール部の内側部位にも少なくとも 1つの補助シール部を設けたこと を特徴とする請求項 1に記載の電子レンジ調理用包装体。 [2] The microwave oven packaging package according to [1], wherein at least one auxiliary seal portion is also provided in an inner portion of the steam release seal portion.
[3] 蒸気抜きシール部となるフランジ部のヒートシール部の内側及び外側にそれぞれ独 立した凹部を設けることにより容器の内側方向に向力、う突出部を形成したことを特徴 とする請求項 1又は 2に記載の電子レンジ調理用包装体。 [3] The invention is characterized in that, by providing independent recesses on the inside and outside of the heat seal part of the flange part that serves as a steam release seal part, a directional force and a protruding part are formed in the inner direction of the container. Package for microwave oven cooking as described in 1 or 2.
[4] 前記凹部に少なくとも 1つの補助凸部を設け、該補助凸部と蓋体をヒートシールす ることにより補助シール部を形成したことを特徴とする請求項 3に記載の電子レンジ 調理用包装体。 [4] The microwave oven for cooking according to claim 3, wherein at least one auxiliary convex portion is provided in the concave portion, and the auxiliary sealing portion is formed by heat sealing the auxiliary convex portion and the lid. Packaging body.
[5] 前記補助シール部を、点状のスポットシールとして形成したことを特徴とする請求項 [5] The auxiliary seal part is formed as a spot-like spot seal.
1〜4のいずれかに記載の電子レンジ調理用包装体。 Package for microwave oven cooking in any one of 1-4.
[6] 前記突出部の形状を U字状乃至 V字状に形成したことを特徴とする請求項;!〜 5の[6] The shape of the projecting portion is formed in a U shape or a V shape;
V、ずれかに記載の電子レンジ調理用包装体。 Package for microwave oven cooking according to V, slippage.
[7] 電子レンジ調理用包装体のヒートシール部の蒸気抜きシール部に対向する位置に[7] At the position facing the steam seal part of the heat seal part of the packaging for microwave oven cooking
、容器の外側方向に向けて突出する開封部を形成したことを特徴とする請求項 1〜6 の!/、ずれかに記載の電子レンジ調理用包装体。 7. The packaging for microwave oven cooking according to claim 1, wherein an opening portion protruding toward the outer side of the container is formed.
[8] 前記開封部の形状を V字状に形成したことを特徴とする請求項 7に記載の電子レン ジ調理用包装体。 [8] The electronic range cooking package according to [7], wherein the shape of the opening portion is formed in a V-shape.
PCT/JP2007/071612 2006-11-10 2007-11-07 Package body for microwave oven cooking WO2008056690A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008543098A JP4924613B2 (en) 2006-11-10 2007-11-07 Packaging for microwave oven cooking

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-305879 2006-11-10
JP2006305879 2006-11-10

Publications (1)

Publication Number Publication Date
WO2008056690A1 true WO2008056690A1 (en) 2008-05-15

Family

ID=39364504

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/071612 WO2008056690A1 (en) 2006-11-10 2007-11-07 Package body for microwave oven cooking

Country Status (2)

Country Link
JP (1) JP4924613B2 (en)
WO (1) WO2008056690A1 (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010023851A (en) * 2008-07-16 2010-02-04 Toyo Seikan Kaisha Ltd Package for microwave oven cooking
JPWO2008056690A1 (en) * 2006-11-10 2010-02-25 東洋製罐株式会社 Packaging for microwave oven cooking
DE102009018489A1 (en) * 2009-04-22 2010-10-28 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Packaging, in particular microwave packaging bags, with pressure compensating valve with variable flow cross section
JP2013052892A (en) * 2011-09-02 2013-03-21 Dainippon Printing Co Ltd Heating container and lid material used therefor
JP2015155319A (en) * 2014-02-20 2015-08-27 福岡丸本株式会社 Packaging container
JP2016069004A (en) * 2014-09-30 2016-05-09 キョーラク株式会社 Container for microwave oven
JP2016069005A (en) * 2014-09-30 2016-05-09 キョーラク株式会社 Container for microwave oven
WO2016163428A1 (en) * 2015-04-06 2016-10-13 キョーラク株式会社 Container for microwave ovens
CN106043963A (en) * 2015-04-06 2016-10-26 京洛株式会社 Container for microwave ovens
JP2017137099A (en) * 2016-02-04 2017-08-10 大日本印刷株式会社 Container with lid
JP6203340B1 (en) * 2016-07-26 2017-09-27 フジフーズ株式会社 Double seal sealing method for food packaging container and food packaging container
WO2017169964A1 (en) * 2016-03-31 2017-10-05 キョーラク株式会社 Microwave oven container
JP2017178331A (en) * 2016-03-29 2017-10-05 東罐興業株式会社 Container and production method thereof
US20180037393A1 (en) * 2007-05-10 2018-02-08 The Hillshire Brands Company Moisture degraded packaging seal
EP3202687A4 (en) * 2014-09-30 2018-06-13 Kyoraku Co., Ltd. Microwave oven container
US20180273277A1 (en) * 2010-11-10 2018-09-27 The Hillshire Brands Company Packaged food with moisture release
JP2019006507A (en) * 2018-10-18 2019-01-17 キョーラク株式会社 Container for microwave oven
WO2019088082A1 (en) * 2017-10-31 2019-05-09 出光ユニテック株式会社 Container
JP2019081583A (en) * 2017-10-31 2019-05-30 出光ユニテック株式会社 container
JP2019081584A (en) * 2017-10-31 2019-05-30 出光ユニテック株式会社 container
US20220242648A1 (en) * 2010-11-10 2022-08-04 The Hillshire Brands Company Packaged food with moisture release

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012213416A (en) * 2011-03-31 2012-11-08 Yasushi Matsumoto Disinfection tool and method for using the same
JP5846810B2 (en) * 2011-08-29 2016-01-20 株式会社ディスペンパックジャパン Distribution package
KR200489035Y1 (en) * 2018-02-20 2019-04-19 이상진 Tray for microwave having pressure control structure
KR101982212B1 (en) * 2019-01-25 2019-08-28 씨제이제일제당 주식회사 Container for retort

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62235080A (en) * 1986-03-27 1987-10-15 ハウス食品株式会社 Sealing vessel for heating cooking
JPH0329769A (en) * 1989-06-23 1991-02-07 House Food Ind Co Ltd Sealing method for retort container
JPH10236542A (en) * 1997-02-24 1998-09-08 Sumitomo Bakelite Co Ltd Food package body for microwave oven cooking
JP3052161U (en) * 1997-12-26 1998-09-14 株式会社ニチロ Food package for microwave oven
JPH11171261A (en) * 1997-12-12 1999-06-29 Dainippon Printing Co Ltd Hermetically-sealed container
JP3060599U (en) * 1998-12-28 1999-09-07 株式会社ニチロ Food package for microwave oven
JP2000062858A (en) * 1998-06-12 2000-02-29 Dainippon Printing Co Ltd Package body
DE19860473A1 (en) * 1998-12-28 2000-06-29 Hagmann Maschinenbau Ag Selzac Container for foodstuff which can be cooked or heated up in microwave oven, for example, has at least one inwards orientated welded seam or seal in at least one area, and may be broken or thinner in at least one area
JP2001315863A (en) * 2000-05-02 2001-11-13 Sun A Kaken Co Ltd Packaging body for heat-cooking, and heat-cooking method by packaging body for heat-cooking
JP2006096367A (en) * 2004-09-28 2006-04-13 Toyo Seikan Kaisha Ltd Packaging body for cooking in microwave oven

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005041557A (en) * 2003-07-25 2005-02-17 Sun A Kaken Co Ltd Heating-treatment packaging body and packaging method of contents in heating-treatment packaging body
JP4888644B2 (en) * 2006-05-19 2012-02-29 東洋製罐株式会社 Packaging for microwave oven cooking
JP4924613B2 (en) * 2006-11-10 2012-04-25 東洋製罐株式会社 Packaging for microwave oven cooking

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62235080A (en) * 1986-03-27 1987-10-15 ハウス食品株式会社 Sealing vessel for heating cooking
JPH0329769A (en) * 1989-06-23 1991-02-07 House Food Ind Co Ltd Sealing method for retort container
JPH10236542A (en) * 1997-02-24 1998-09-08 Sumitomo Bakelite Co Ltd Food package body for microwave oven cooking
JPH11171261A (en) * 1997-12-12 1999-06-29 Dainippon Printing Co Ltd Hermetically-sealed container
JP3052161U (en) * 1997-12-26 1998-09-14 株式会社ニチロ Food package for microwave oven
JP2000062858A (en) * 1998-06-12 2000-02-29 Dainippon Printing Co Ltd Package body
JP3060599U (en) * 1998-12-28 1999-09-07 株式会社ニチロ Food package for microwave oven
DE19860473A1 (en) * 1998-12-28 2000-06-29 Hagmann Maschinenbau Ag Selzac Container for foodstuff which can be cooked or heated up in microwave oven, for example, has at least one inwards orientated welded seam or seal in at least one area, and may be broken or thinner in at least one area
JP2001315863A (en) * 2000-05-02 2001-11-13 Sun A Kaken Co Ltd Packaging body for heat-cooking, and heat-cooking method by packaging body for heat-cooking
JP2006096367A (en) * 2004-09-28 2006-04-13 Toyo Seikan Kaisha Ltd Packaging body for cooking in microwave oven

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2008056690A1 (en) * 2006-11-10 2010-02-25 東洋製罐株式会社 Packaging for microwave oven cooking
US20180037393A1 (en) * 2007-05-10 2018-02-08 The Hillshire Brands Company Moisture degraded packaging seal
JP2010023851A (en) * 2008-07-16 2010-02-04 Toyo Seikan Kaisha Ltd Package for microwave oven cooking
DE102009018489A1 (en) * 2009-04-22 2010-10-28 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Packaging, in particular microwave packaging bags, with pressure compensating valve with variable flow cross section
US20220242648A1 (en) * 2010-11-10 2022-08-04 The Hillshire Brands Company Packaged food with moisture release
US20180273277A1 (en) * 2010-11-10 2018-09-27 The Hillshire Brands Company Packaged food with moisture release
JP2013052892A (en) * 2011-09-02 2013-03-21 Dainippon Printing Co Ltd Heating container and lid material used therefor
JP2015155319A (en) * 2014-02-20 2015-08-27 福岡丸本株式会社 Packaging container
EP3572351A1 (en) * 2014-09-30 2019-11-27 Kyoraku Co., Ltd. Microwave oven container
JP2016069004A (en) * 2014-09-30 2016-05-09 キョーラク株式会社 Container for microwave oven
JP2016069005A (en) * 2014-09-30 2016-05-09 キョーラク株式会社 Container for microwave oven
US10717585B2 (en) 2014-09-30 2020-07-21 Kyoraku Co., Ltd. Container for microwave oven
US11447324B2 (en) 2014-09-30 2022-09-20 Kyoraku Co., Ltd. Container for microwave oven
EP3202687A4 (en) * 2014-09-30 2018-06-13 Kyoraku Co., Ltd. Microwave oven container
JP2016196329A (en) * 2015-04-06 2016-11-24 キョーラク株式会社 Container for microwave oven
CN106043963A (en) * 2015-04-06 2016-10-26 京洛株式会社 Container for microwave ovens
WO2016163428A1 (en) * 2015-04-06 2016-10-13 キョーラク株式会社 Container for microwave ovens
JP2020090328A (en) * 2015-04-06 2020-06-11 キョーラク株式会社 Microwave oven container and its manufacturing method, and sealing head
JP7348655B2 (en) 2015-04-06 2023-09-21 キョーラク株式会社 Microwave container and its manufacturing method, seal head
CN106043963B (en) * 2015-04-06 2020-06-23 京洛株式会社 Container for microwave oven
JP2017137099A (en) * 2016-02-04 2017-08-10 大日本印刷株式会社 Container with lid
JP2017178331A (en) * 2016-03-29 2017-10-05 東罐興業株式会社 Container and production method thereof
JP2017178430A (en) * 2016-03-31 2017-10-05 キョーラク株式会社 Container for microwave oven
TWI634059B (en) * 2016-03-31 2018-09-01 京洛股份有限公司 Microwave container
WO2017169964A1 (en) * 2016-03-31 2017-10-05 キョーラク株式会社 Microwave oven container
JP2018016328A (en) * 2016-07-26 2018-02-01 フジフーズ株式会社 Double seal sealing method of food packaging container, and food packaging container
JP6203340B1 (en) * 2016-07-26 2017-09-27 フジフーズ株式会社 Double seal sealing method for food packaging container and food packaging container
JP2019081584A (en) * 2017-10-31 2019-05-30 出光ユニテック株式会社 container
JP2019081583A (en) * 2017-10-31 2019-05-30 出光ユニテック株式会社 container
WO2019088082A1 (en) * 2017-10-31 2019-05-09 出光ユニテック株式会社 Container
JP7137919B2 (en) 2017-10-31 2022-09-15 出光ユニテック株式会社 container
JP7188878B2 (en) 2017-10-31 2022-12-13 出光ユニテック株式会社 container
JP2019006507A (en) * 2018-10-18 2019-01-17 キョーラク株式会社 Container for microwave oven

Also Published As

Publication number Publication date
JP4924613B2 (en) 2012-04-25
JPWO2008056690A1 (en) 2010-02-25

Similar Documents

Publication Publication Date Title
WO2008056690A1 (en) Package body for microwave oven cooking
JP4888644B2 (en) Packaging for microwave oven cooking
JP4539266B2 (en) Packaging for microwave oven cooking
JP5050648B2 (en) Microwave cooking packaging container
WO2007113930A1 (en) Packaging container for microwave oven and process for manufacturing the same
JP5327506B2 (en) Packaging for microwave oven cooking
JP5223516B2 (en) Packaging for microwave oven cooking
JP4876679B2 (en) Packaging container for microwave oven and manufacturing method thereof
JP4139659B2 (en) Microwave oven packaging bag
JP4258455B2 (en) Plastic pouch
JP4911030B2 (en) Microwave cooking packaging container
JP4420255B2 (en) Plastic pouch
JP2007062834A (en) Container for microwave oven
JP4687763B2 (en) Plastic pouch
JP2008302982A (en) Plastic pouch
JP4752419B2 (en) Container for microwave oven
JP2000109142A (en) Packaging container having automatic pressure adjustment function
JP2012035516A (en) Oxygen absorbing laminated body and packaging container
JP2006347602A (en) Flat bag for use in microwave oven, which bag can be made into solid form upon cooking
JP2020093801A (en) Lid material and package using therewith
JP2008074463A (en) Lid material for plastic container

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07831343

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2008543098

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07831343

Country of ref document: EP

Kind code of ref document: A1