JPS6344472A - Vessel - Google Patents
VesselInfo
- Publication number
- JPS6344472A JPS6344472A JP61188245A JP18824586A JPS6344472A JP S6344472 A JPS6344472 A JP S6344472A JP 61188245 A JP61188245 A JP 61188245A JP 18824586 A JP18824586 A JP 18824586A JP S6344472 A JPS6344472 A JP S6344472A
- Authority
- JP
- Japan
- Prior art keywords
- container
- heat
- lid
- container body
- sealed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 230000005684 electric field Effects 0.000 claims description 8
- 239000010410 layer Substances 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 235000013305 food Nutrition 0.000 description 5
- -1 polyethylene terephthalate Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 230000009172 bursting Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Package Specialized In Special Use (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は容器本体に蓋部をヒートシールすることによっ
て密封されてなる容器であって、特に電子レンジでの加
熱に適した容器に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a container sealed by heat-sealing a lid to a container body, and particularly to a container suitable for heating in a microwave oven.
（従来の技術）
容器本体に蓋部をヒートシールすることによって密封さ
れた１食品を内容物とする容器が最近市場に多く出廻っ
ている。喫食に先立ってこの種の密封容器中の食品を電
子レンジによって加熱するさいに、食品が水を含むもの
、例えば炊飯等である場合、食品中の水分の蒸気圧によ
って内圧が高まって、蓋部もしくは容器本体が破裂して
、内容物が容器から零れ出るという問題を生ずる。(Prior Art) Recently, there have been many containers on the market that contain one food item and are sealed by heat-sealing a lid to a container body. When heating food in this type of sealed container in a microwave oven before eating, if the food contains water, such as cooked rice, the internal pressure increases due to the vapor pressure of the water in the food, causing the lid to close. Otherwise, the container body may burst and the contents may spill out from the container.
（発明が解決しようとする問題点）
本発明は、容器本体に蓋部をヒートシールすることによ
って密封された容器であって、水を含む内容物が収納さ
れていて、この内容物を電子レンジ等により加温、すな
わち高周波電界の印加により加温した場合でも、容器が
水蒸気内圧によって破裂するおそれのない容器を提供す
ることを目的とする。(Problems to be Solved by the Invention) The present invention provides a container that is sealed by heat-sealing a lid portion to a container body, and contains a content containing water, and the content is heated in a microwave oven. It is an object of the present invention to provide a container that is free from the risk of bursting due to internal water vapor pressure even when heated by applying a high-frequency electric field.
（問題点を解決するだめの手段）
本発明の容器は、容器本体に蓋部をヒートシールするこ
とによって密封されてなる容器であって、該容器本体も
しくは蓋部には、高周波電界内において昇熱する発熱層
がヒートシール部に近接して局部的に、もしくは全周に
沿って付設されてお゛す、該容器を該高周波電界の甲に
入れたとき、該発熱層に近接した該ヒートシール部の部
分が溶融することを特徴とする。(Means for Solving the Problems) The container of the present invention is a container that is sealed by heat-sealing a lid to a container body, and the container body or lid has a A heating layer that heats is attached locally or along the entire circumference close to the heat sealing part. When the container is placed in the shell of the high frequency electric field, the heating layer close to the heating layer is attached. The seal part is characterized by melting.
容器本体としては、熱可塑性プラスチック（積層体を含
む）のみよりなるもの、あるいは少なくともヒートシー
ルされるべき開口部にヒートシール性樹脂層を有する紙
材もしくは硝子製のものが例示される。Examples of the container body include those made of only thermoplastic plastic (including laminates), or those made of paper or glass that have at least a heat-sealable resin layer on the opening to be heat-sealed.
蓋部は主として熱可塑性プラスチックフィルム（積層体
を含む）よりなるが、このフィルムに気相めっきによる
非電導性無機被膜（例えば酸化硅素、酸化アルミニウム
、弗化マグネシウム等のバリヤー性を有する）が形成さ
れたものであってもよい。The lid is mainly made of a thermoplastic plastic film (including a laminate), but a non-conductive inorganic coating (e.g., silicon oxide, aluminum oxide, magnesium fluoride, etc. with barrier properties) is formed on this film by vapor phase plating. It may be something that has been done.
容器本体および蓋部を形成する材料はそれ自体では、容
器を高周波電界内に入れたとき溶融もしくは軟化しない
。The material forming the container body and lid does not by itself melt or soften when the container is placed in a high frequency electric field.
高周波電界内において昇熱する発熱層とは、高周波電界
内において、抵抗損失、磁気損失、誘電損もしくは放電
等によって、好ましくは内容物が所定の加温温度に到達
する前に、近接するヒートシール部、すなわちヒートシ
ール部を形成する樹脂を溶融する温度まで、好ましくは
急速に、昇熱する層をいう。A heat-generating layer that heats up in a high-frequency electric field is a heat-generating layer that heats up in a high-frequency electric field by resistive loss, magnetic loss, dielectric loss, discharge, etc., preferably before the contents reach a predetermined temperature. ie, a layer whose temperature rises preferably rapidly to a temperature that melts the resin forming the heat-sealed part.
発熱層として、金属粉末もしくはカーデン粉等の導電性
粉末を含む導電性膜、又は金属箔（以上は抵抗損失を利
用するもの）、もしくはニトリルゴム等の極性ゴム膜（
誘電損を利用するもの）、あるいはフェライト等の磁性
粉末を含む磁性膜（磁気損失を利用するもの）、もしく
は導電性気相めっき膜（アルミニウム、クロム、酸化錫
もしくは酸化インジウム等の：放電発熱を利用するもの
）等が例示される。As a heat generating layer, a conductive film containing conductive powder such as metal powder or cardin powder, or metal foil (the above uses resistance loss), or a polar rubber film such as nitrile rubber (
(Those that utilize dielectric loss), or magnetic films containing magnetic powder such as ferrite (Those that utilize magnetic loss), or conductive vapor phase plating films (of aluminum, chromium, tin oxide, or indium oxide, etc.) that prevent discharge heat generation. example).
（作用）
内容物の充填された本発明の容器を電子レンジに入れて
、電子レンジを付勢すると内容物は高周波誘電加熱によ
り加温される。同時に発熱層が昇熱して発熱層に近接す
るヒートシール部の部分の樹脂が、好ましくは内容物が
所定の加温温度に達する前に溶融する。(Function) When the container of the present invention filled with the contents is placed in a microwave oven and the microwave oven is energized, the contents are heated by high-frequency dielectric heating. At the same time, the heating layer heats up and the resin in the heat-sealed portion adjacent to the heating layer preferably melts before the contents reach a predetermined heating temperature.
内容物の加温により発生した水蒸気によって容器内圧は
上昇しようとするが、水蒸気は溶融したヒートシール部
の部分を穿孔して、ここから外部に逃失する。そのため
容器内圧の上昇による容器本体又は蓋部の破裂が防止さ
れる。The internal pressure of the container tends to rise due to the water vapor generated by heating the contents, but the water vapor perforates the molten heat-sealed portion and escapes from there to the outside. This prevents the container body or lid from bursting due to an increase in the internal pressure of the container.
（実施例）
第１図、第２図において、１は容器、２は容器本体、３
は蓋部であり、４は食品等の内容物である。容器本体２
は低密度ポリエチレンシートを熱成形してなるものであ
る。蓋部３は、２軸延伸ポリエチレンテレフタレートフ
イルム（厚さは例えば１２μｍ）よりなる外層３ａ、お
よび低密度ポリエチレンフィルム（厚さは例えば６０μ
ｍ）よりなる内層３ｂを有しており、図示されないウレ
タン系の接着剤層を介して積層してなる積層体フィルム
より打抜き形成されたものである。外層３ａを形成する
熱可塑性プラスチックとしては内層３ｂの夫れよりも融
点の高いものが好ましく用いられる。(Example) In Figures 1 and 2, 1 is a container, 2 is a container body, 3
4 is the lid, and 4 is the contents such as food. Container body 2
is made by thermoforming a low-density polyethylene sheet. The lid part 3 includes an outer layer 3a made of a biaxially stretched polyethylene terephthalate film (thickness, for example, 12 μm) and a low-density polyethylene film (thickness, for example, 60 μm).
It has an inner layer 3b consisting of (m), and is formed by punching from a laminate film laminated via a urethane adhesive layer (not shown). The thermoplastic plastic forming the outer layer 3a preferably has a higher melting point than that of the inner layer 3b.
内容物４（炊飯）を充填した容器本体２のフランジ部２
ａに蓋部３をヒートシールしてヒートシール部５を形成
することにより密封容器１が得られる。ヒートシール部
５に近接して、すなわちヒートシール部５の上方の内層
３ｂと外層３ａの間に、高周波電界内において昇熱して
、近接するヒートシール部５の樹脂７（この場合は低密
度ポリエチレン）を溶融する発熱層６が局部的に付設さ
れている。発熱層６は本実施例の場合、厚さ１５μｍ。Flange portion 2 of container body 2 filled with contents 4 (cooked rice)
A sealed container 1 is obtained by heat-sealing the lid portion 3 to a to form a heat-sealed portion 5. The resin 7 (in this case, low-density polyethylene ) is locally provided with a heat generating layer 6 that melts the . In this embodiment, the heat generating layer 6 has a thickness of 15 μm.
周方向長さ２５ ｍｍ 、幅１０ｆｌの、アルミニウム
粉末を７０重量％含むエポキシフェノール塗料の塗膜よ
りなっている。It consists of a coating film of epoxyphenol paint containing 70% by weight of aluminum powder, with a circumferential length of 25 mm and a width of 10 fl.
容器１を家庭用電子レンジ（周波数は通常２．４５ＧＨ
ｚ ）内に入れ付勢すると、内容物４が所定の加温温度
に達する前に、発熱層６は急速に昇熱して、発熱層６に
近接するヒートシール部５の部分の樹脂７を溶融する。Place container 1 in a household microwave oven (the frequency is usually 2.45GH).
z) When the heat generating layer 6 is inserted into the heat generating layer 6 and energized, the heat generating layer 6 rapidly rises in temperature and melts the resin 7 in the heat seal portion 5 adjacent to the heat generating layer 6 before the contents 4 reach a predetermined heating temperature. do.
内容物４の加温により発生した水蒸気は、ヒートシール
部５の、この溶融した部分から逃失するので容器１の破
裂は防止される。The water vapor generated by heating the contents 4 escapes from this molten portion of the heat seal portion 5, so that the container 1 is prevented from bursting.
第３図は発熱層６がヒートシール部５に近接して、すな
わちヒートシール部５の下方の容器本体２のフランジ部
２ａの上面近傍に局部的に付設された容器１１を示す。FIG. 3 shows a container 11 in which the heat generating layer 6 is locally attached close to the heat sealing part 5, that is, near the upper surface of the flange part 2a of the container body 2 below the heat sealing part 5.
この場合も容器１と同様の効果を奏する。In this case as well, the same effect as in container 1 is achieved.
ヒートシール部５のヒートシール部度が引剥ぎ可能の程
度である場合、例えば容器本体２は低密度ポリエチレン
よりなるが、蓋部３の内層３ｂが、ポリエチレンとポリ
ゾレピレンのブレンドよりなる場合は、第１図に示すよ
うに、発熱層６を開口用タブ３ｘに対向する位置に設け
ることが望ましい。When the degree of heat-sealing of the heat-sealing portion 5 is such that it can be peeled off, for example, the container body 2 is made of low-density polyethylene, but the inner layer 3b of the lid portion 3 is made of a blend of polyethylene and polyzolepyrene. As shown in FIG. 1, it is desirable to provide the heat generating layer 6 at a position facing the opening tab 3x.
容器を電子レンジより取出してヒートシール部５が冷却
固化した後、ヒートシール部５の溶融した部分には穿孔
部（図示されない）が残り易い。この穿孔部が起点とな
ってタブ３ｘを引上げたときの初期引剥ぎが容易になる
からである。After the container is removed from the microwave oven and the heat-sealed portion 5 is cooled and solidified, a perforation (not shown) is likely to remain in the melted portion of the heat-sealed portion 5. This is because the initial peeling off when the tab 3x is pulled up starting from this perforation becomes easy.
図示されないが、厚さ２０μｍ２幅２龍の鉄箔よシなる
発熱層をヒートシール部の全周に沿って設けてもよい。Although not shown, a heat generating layer made of iron foil with a thickness of 20 μm and a width of 2 mm may be provided along the entire circumference of the heat-sealed portion.
この場合、蓋部３は例えば厚さ１２μｍの２軸延伸ポリ
エチレンテレフタレートフイルムの外層および厚さ７０
μｍのポリプロピレンフィルムの内層よりなり、発熱層
はウレタン系接着剤を介して外層と内層の間に付設され
る。この場合容器本体２は例えばポリプロピレンより形
成される。In this case, the lid part 3 has an outer layer of biaxially stretched polyethylene terephthalate film with a thickness of 12 μm and a thickness of 70 μm, for example.
It consists of an inner layer of polypropylene film with a diameter of μm, and a heat generating layer is attached between the outer layer and the inner layer via a urethane adhesive. In this case, the container body 2 is made of polypropylene, for example.
（発明の効果）
本発明の容器は、水を含む内容物が収納されていて、こ
の内容物を電子レンジ等により加温、すなわち高周波電
界の印加により加温した場合でも、容器が水蒸気内圧に
よって破裂するおそれのないという効果を奏する。(Effects of the Invention) The container of the present invention stores a content containing water, and even when this content is heated in a microwave oven or the like, that is, by applying a high-frequency electric field, the container is heated by the internal water vapor pressure. This has the effect that there is no risk of rupture.
第１図は本発明の第１の実施例である容器の平面図、第
２図は第１図の■−■線に沿う縦断面図、第３図は本発
明の第２の実施例である容器の要部縦断面図である。
１・・・容器、２・・・容器本体、３・・・蓋部、５・
・・ヒートシール部、６・・・発熱層。Fig. 1 is a plan view of a container according to a first embodiment of the present invention, Fig. 2 is a vertical sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a plan view of a container according to a second embodiment of the present invention. FIG. 2 is a vertical cross-sectional view of a main part of a certain container. 1... Container, 2... Container body, 3... Lid, 5...
...Heat sealing part, 6... Heat generating layer.
Claims (1)
密封されてなる容器において、該容器本体もしくは蓋部
には、高周波電界内において昇熱する発熱層がヒートシ
ール部に近接して局部的に、もしくは全周に沿って付設
されており、該容器を該高周波電界の中に入れたとき、
該発熱層に近接した該ヒートシール部の部分が溶融する
ことを特徴とする容器。(1) In a container that is sealed by heat-sealing a lid to a container body, the container body or lid has a heating layer that heats up in a high-frequency electric field locally in the vicinity of the heat-sealed portion. , or attached along the entire circumference, and when the container is placed in the high frequency electric field,
A container characterized in that a portion of the heat-sealed portion close to the heat generating layer is melted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61188245A JPS6344472A (en) | 1986-08-11 | 1986-08-11 | Vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61188245A JPS6344472A (en) | 1986-08-11 | 1986-08-11 | Vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6344472A true JPS6344472A (en) | 1988-02-25 |
Family
ID=16220322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61188245A Pending JPS6344472A (en) | 1986-08-11 | 1986-08-11 | Vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6344472A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02152679A (en) * | 1988-08-19 | 1990-06-12 | Campbell Soup Co | Package for food having microwave peelable sealed closure |
| JP2007119064A (en) * | 2005-09-28 | 2007-05-17 | Dainippon Printing Co Ltd | Sealed container for microwave oven heating |
-
1986
- 1986-08-11 JP JP61188245A patent/JPS6344472A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02152679A (en) * | 1988-08-19 | 1990-06-12 | Campbell Soup Co | Package for food having microwave peelable sealed closure |
| JP2007119064A (en) * | 2005-09-28 | 2007-05-17 | Dainippon Printing Co Ltd | Sealed container for microwave oven heating |
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