JPH11208736A - Food packaging container - Google Patents
Food packaging containerInfo
- Publication number
- JPH11208736A JPH11208736A JP10046125A JP4612598A JPH11208736A JP H11208736 A JPH11208736 A JP H11208736A JP 10046125 A JP10046125 A JP 10046125A JP 4612598 A JP4612598 A JP 4612598A JP H11208736 A JPH11208736 A JP H11208736A
- Authority
- JP
- Japan
- Prior art keywords
- container
- adhesive
- food packaging
- layer
- easy
- 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.)
- Granted
Links
Landscapes
- Package Specialized In Special Use (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は加熱殺菌加工食品、
冷凍食品、チルド食品、調味料、食品素材等を密封包装
した容器に関するもので、詳細には加熱後転倒しても内
容物が漏れることのない容器に関する。TECHNICAL FIELD The present invention relates to a heat-sterilized food,
The present invention relates to a container in which a frozen food, a chilled food, a seasoning, a food material, and the like are hermetically sealed, and more particularly to a container in which the contents do not leak even if the product falls over after heating.
【０００２】[0002]
【従来の技術】従来行われている包装された食品の加熱
処理には大別して次の３種の方法が用いられている。 開封後別の容器に移して加熱する。 加熱前に開封し、そのまま加熱する。 密封状態のまま加熱し、加熱中に容器の一部が開封
する。 ところでの開封後別容器に移して加熱する方法は別容
器が必要である。またの開封して加熱する容器は容器
に開封する手段を設置する必要がある。の密封した状
態のまま加熱し、加熱中に破裂を防ぐため容器の一部が
開封する容器を用いる場合は、加熱後は開封状態である
ので加熱装置から容器を取り出す際、加熱された内容物
が漏洩したり、またこの漏洩により火傷の危険が大き
い。最近、スーパー、デパートそしてコンビニエンスス
トアーの食品販売コーナーに電子レンジが設置され、消
費者が購入食品を加熱し、持ち帰ることが行われている
が、従来容器では、加熱により開封されるため、持ち帰
る際に容器の転倒等により内容物の漏洩及びそれによる
火傷の危険性がある。また持ち帰った包装食品を電子レ
ンジで加熱または再加熱する場合、容器内に配置されて
いる添付用調味料容器は衛生上の観点からそのまま加熱
するが、調味料がマイクロ波で加熱され、調味料容器の
内圧が上昇し、破裂する問題がある。また加熱させない
ように金属箔積層体で形成した調味料容器を用いると、
金属箔が放電する問題がある。2. Description of the Related Art Conventionally, the following three types of methods are generally used for heat treatment of packaged foods. After opening, transfer to another container and heat. Open before heating and heat as it is. The container is heated in a sealed state, and a part of the container is opened during the heating. By the way, another method is required for the method of heating after opening and transferring to another container. Further, for the container to be opened and heated, it is necessary to provide a means for opening the container. When using a container that is heated in the sealed state and part of the container is opened to prevent rupture during heating, when the container is removed from the heating device when heated, the heated contents Leaks, and there is a high risk of burns due to this leak. Recently, microwave ovens have been installed in the food sales corners of supermarkets, department stores and convenience stores, and consumers have been heating and purchasing the food they have purchased. There is a danger of leakage of contents due to a fall of the container and burns due to the leakage. When the packaged food brought back is heated or reheated in a microwave oven, the attached seasoning container placed in the container is heated as it is from a sanitary point of view, but the seasoning is heated by microwave and the seasoning is heated. There is a problem that the internal pressure of the container increases and the container bursts. When using a seasoning container formed of a metal foil laminate so as not to be heated,
There is a problem that the metal foil is discharged.
【０００３】次に従来技術について具体的に例を挙げて
説明する。特開平３−１７６７号公報にはベースフイル
ムと不織布とを剥離可能に積層した積層フイルムを用い
た容器が記載されている。そして加熱前にベースフイル
ムと不織布を剥離することにより通気性と通水性が得ら
れると説明されているが、この容器はベースフイルムと
不織布の間に非接着層がないので加熱時に蒸気がベース
フイルムを押し上げるので予め接着部を剥離し開封して
加熱しなければならず、開封の手間がかかり、また開封
処置を忘れた場合容器が破裂する問題があり、さらに通
常の食品売場で電子レンジで加熱するため容器を開封す
ることは衛生上の問題がある。また特開平９−４００３
２号公報には、「プラスチックラミネートフイルムを折
曲げ成形し、接合端部および両端部をヒートシール加工
してヒートシール部を形成した電子レンジ用包装袋にお
いて、上記ヒートシール部のうちの少なくとも１つのヒ
ートシール部に、所定の蒸気圧に達した時に剥離して蒸
気逃げ孔を形成する易剥離区域を設けたことを特徴とす
る電子レンジ用包装袋。」が記載されており、特開平９
−２６７８７０号公報には「耐熱性樹脂フイルムからな
る密閉容器の内圧調整用折り込み部として、内面側にパ
ートコート材をコーティングし、該パートコート材をシ
ールした時にパートコート材で閉鎖される位置に貫通孔
または切り目を入れた耐熱性樹脂フイルムからなる袋」
が記載されている。これ等の袋は完全な貫通孔が設けら
れているので消費者が店頭で電子レンジで加熱し、持ち
帰る際容器が転倒すると加熱された内容物が漏洩する問
題がある。特開平９−４００３３号公報には「不通気性
のシート層を外層、吸水性を有するパルプ繊維シート層
を中間層、透湿通気かつ防水機能を有するメルトプロー
ン不織布層を内層として配した食品包装材であって、前
記メルトプローン不織布層が、全樹脂中でのエチレン含
有量が２〜１０％の、エチレン−ポリプロピレンランダ
ム共重合体樹脂か、またはポリプロピレン系樹脂とエチ
レン系樹脂との合成樹脂からなるものであることを特徴
とする電子レンジ加熱用食品包装材。」が記載されてい
る。しかしながら、吸水層を設けると電子レンジで加熱
したとき吸水した水が加熱されのでこの吸水層が加熱さ
れ袋が破壊する危険がある。また、実開平５−１９１７
１号公報には「不通気性シートを外層、吸水性繊維シー
トを中間層、疎水性シートとを食品に接する内層として
食品を包装し、密封シールした食品包装体であり、該疎
水性シートは１０ｃｃ／ｃｍ２／ｓｅｃ．以上の通気度
を有し、シール部分において該不通気性シートと該吸水
性繊維シート間および／または該吸水性繊維シートと該
疎水性シート間は実質的に表面層のみで接合した部分を
形成したことを特徴とする食品包装体。」が記載されて
いる。このようにシール部で各層の表面のみを接着し吸
水層を外部と連通する構造とすると該吸収層は表面以外
は通気性となり流通工程で外部と連通し外部の菌や異臭
ガス等の異物が侵入し内容物が汚染される危険がある。[0003] Next, the prior art will be described with specific examples. JP-A-3-1767 discloses a container using a laminated film in which a base film and a non-woven fabric are releasably laminated. It is described that breathability and water permeability can be obtained by peeling the base film and the nonwoven fabric before heating.However, since there is no non-adhesive layer between the base film and the nonwoven fabric, this container has steam when heated. Must be peeled off and opened beforehand, so that it takes time and effort to open, and there is a problem that the container will burst if you forget to open it. Opening the container to do so is a sanitary problem. Also, JP-A-9-4003
Japanese Patent Publication No. 2 (1993) discloses that, in a packaging bag for a microwave oven in which a plastic laminate film is formed by bending and a heat-sealed joint end and both ends are formed, at least one of the heat-sealed portions is formed. Japanese Patent Application Laid-Open No. H9-99, in which a heat-sealing portion is provided with an easy-peeling area which peels off when a predetermined vapor pressure is reached to form a vapor escape hole. "
Japanese Patent Application Laid-Open No. 267870/1990 discloses that "a folded part for adjusting the internal pressure of a sealed container made of a heat-resistant resin film is coated with a part coat material on the inner surface, and is closed at a position closed by the part coat material when the part coat material is sealed. Bag made of heat-resistant resin film with through holes or cuts "
Is described. Since these bags are provided with complete through-holes, there is a problem that the consumer heats them in a microwave oven at the store and the heated contents leak when the container falls over when brought back. Japanese Patent Application Laid-Open No. 9-40033 discloses "a food packaging having an air-impermeable sheet layer as an outer layer, a water-absorbing pulp fiber sheet layer as an intermediate layer, and a moisture-permeable, air-permeable and waterproof melt-prone nonwoven layer as an inner layer. A material, wherein the melt-prone nonwoven fabric layer is made of an ethylene-polypropylene random copolymer resin having an ethylene content of 2 to 10% in all resins, or a synthetic resin of a polypropylene resin and an ethylene resin. A food packaging material for heating a microwave oven. " However, if a water-absorbing layer is provided, the water that has absorbed water is heated when heated in a microwave oven, so there is a risk that the water-absorbing layer is heated and the bag is broken. In addition, 5-1917
No. 1 discloses a food package in which a food is packaged and hermetically sealed as an impermeable sheet as an outer layer, a water-absorbent fiber sheet as an intermediate layer, and a hydrophobic sheet as an inner layer in contact with the food. Has a gas permeability of 10 cc / cm 2 / sec or more, and has a substantially surface layer between the air-impermeable sheet and the water-absorbing fiber sheet and / or between the water-absorbing fiber sheet and the hydrophobic sheet at the sealing portion. A food package characterized in that a joined portion is formed only with the food package. " As described above, if only the surface of each layer is adhered at the seal portion and the water-absorbing layer communicates with the outside, the absorbing layer becomes air-permeable except for the surface, and communicates with the outside in the distribution process to prevent foreign substances such as external bacteria and off-flavor gas. There is a risk of intrusion and contamination of the contents.
【０００４】[0004]
【発明が解決しようとする課題】包装容器を破裂するこ
となく、そのまま加熱が可能で、加熱後の輸送時及び容
器が転倒した場合も、内容物が漏洩せず流通工程で内容
物の汚染が発生しない容器を提供する。The packaging container can be heated as it is without rupture, and the contents do not leak during transportation after heating and even when the container is turned over, and the contents are not contaminated in the distribution process. Provide containers that do not generate.
【０００５】[0005]
【課題を解決するための手段】本発明は、 「１． 容器の一部に、耐水圧が１ｃｍＨ２Ｏ以上であ
る微小透孔を有する気体を透過し液体を透過しない内面
層と、気体と液体の両者を透過しない外面層の間に両層
と接着しない非接着部を形成し、周縁の少なくとも一部
を易剥離性でかつ外部と連通しない接着部により接着し
て、該非接着部の易開通構造部を配設してなる、漏れを
防止した食品包装容器。 ２． 耐水圧が１ｃｍＨ２Ｏ以上である微小透孔を有す
る気体を透過し液体を透過しない層である内面層が不織
布、多孔質膜、孔開け加工した膜から選んだ膜で形成さ
れた層である、１項に記載された、漏れを防止した食品
包装容器。 ３． 気体と液体の両者を透過しない層である外面層が
合成樹脂フィルム、該フィルムの積層フィルム、これら
に金属等を蒸着したフィルム、金属箔や紙との積層体か
ら選んだ層である、１項または２項に記載された、漏れ
を防止した食品包装容器。 ４． 易開通構造部が内層と外層の非接着部の周縁の少
なくとも一部を易剥離性でかつ外部と連通しない接着部
により接着し、他の周縁は強固な接着部で接着した構造
部である、１項ないし３項のいずれか１項に記載され
た、漏れを防止した食品包装容器。 ５． 易開通構造部の易剥離性でかつ外部と連通しない
接着部の端部を外部に露出させて容器の密封シール部に
配設した、１項ないし４項のいずれか１項に記載され
た、漏れを防止した食品包装容器。 ６． 外面層と内面層の非接着部周縁の易剥離性でかつ
外部と連通しない接着部が、圧力により外部と開通する
接着部である、１項ないし５項のいずれか１項に記載さ
れた、漏れを防止した食品包装容器。 ７． 外面層と内面層の非接着部周縁の易剥離性でかつ
外部と連通しない接着部が、容器を加熱した時内容物か
らの蒸気熱と圧力により外部と開通する接着部である、
１項ないし５項のいずれか１項に記載された、漏れを防
止した食品包装容器。 ８． 耐水圧が１ｃｍＨ２Ｏ以上である微小透孔を有す
る気体を透過し液体を透過しない層である内面層と、気
体と液体の両者を透過しない層である外面層との非接着
部周縁の易剥離性でかつ外部と連通しない接着が弱接着
剤、粘着剤または感熱接着剤による接着力の弱い接着部
である、１項ないし７項のいずれか１項に記載された、
漏れを防止した食品包装容器。 ９． 容器が袋であり、易開通構造部の易剥離性でかつ
外部と連通しない接着部の端部を外部に露出させて袋の
密封シール部に配設した、１項ないし８項のいずれか１
項に記載された、漏れを防止した食品包装容器。 １０． 容器が、カップ、トレー、ボトル等の成形容器
であって、易開通構造部の易剥離性でかつ外部と連通し
ない接着部の端部を外部に露出させて容器と蓋の密封シ
ール部に配設した、１項ないし８項のいずれか１項に記
載された、漏れを防止した食品包装容器。 １１． 容器の一部に、耐水圧が１ｃｍＨ２Ｏ以上であ
る微小透孔を有する気体を透過し液体を透過しない内面
層と、気体と液体の両者を透過しない外面層の間に非接
着部を形成しその周縁を強固な接着部により接着し、内
層と外層の間に両層と接着しない非接着部の外面層の少
なくとも一部に易穿孔部を設置した易開通構造部を配設
してなる、漏れを防止した食品包装容器。 １２． 耐水圧が１ｃｍＨ２Ｏ以上である微小透孔を有
する気体を透過し液体を透過しない層である内面層が不
織布、多孔質膜、孔開け加工した膜から選んだ膜で形成
された層である、１１項に記載された、漏れを防止した
食品包装容器。 １３． 気体と液体の両者を透過しない層である外面層
が合成樹脂フィルム、該フィルムの積層フィルム、これ
らに金属等を蒸着したフィルム、金属箔や紙との積層体
から選んだ層である、１１項または１２項に記載され
た、漏れを防止した食品包装容器。 １４． 易開通構造部の易穿孔部が外層の少なくとも一
部の膜厚を薄くした薄膜部である、１１項ないし１３項
のいずれか１項に記載された、漏れを防止した食品包装
容器。 １５． 易開通構造部の易穿孔部が外層の少なくとも一
部をホットメルト型の合成樹脂で形成した低温溶融部で
ある、１１項ないし１３項のいずれか１項に記載された
漏れを防止した食品包装容器。 １６． 易開通構造部の易穿孔部が外層の少なくとも一
部を切開し、易剥離性接着材により他のフイルムを貼着
して封止した易剥離性封止部である、１１項ないし１３
項のいずれか１項に記載された漏れを防止した食品包装
容器。 １７． 易開通構造部の易穿孔部が外層の少なくとも一
部を１軸延伸したフイルムで形成した易引裂部である、
１１項ないし１３項のいずれか１項に記載された漏れを
防止した食品包装容器。 １８． 容器が袋であり、易穿孔部を配設した易開通構
造部を胴部に配設してなる、１１項に記載された漏れを
防止した食品包装容器。 １９． 容器が、カップ、トレー、ボトル等の成形容器
であって、易穿孔部を配設した易開通構造部を蓋の天板
部に配設した、１１項に記載された漏れを防止した食品
包装容器。 ２０． 容器が、カップ、トレー、ボトル等の成形容器
であって、易穿孔部を配設した易開通構造部を胴部の上
部に配設した、１１項に記載された漏れを防止した食品
包装容器。 ２１． 容器本体が金属、ガラス、プラスチック、紙及
びこれらの積層体又は複合体で形成された、１項ないし
２０項のいずれか１項に記載された、漏れを防止した食
品包装容器。」に関する。Means for Solving the Problems The present invention provides: "1. an inner surface layer which permeates a gas having fine pores having a water pressure resistance of 1 cmH 2 O or more and does not transmit a liquid, A non-adhesive portion that does not adhere to both layers is formed between the outer surface layers that do not allow both liquids to permeate, and at least a part of the peripheral edge is adhered by an adhesive portion that is easily peelable and does not communicate with the outside, thereby facilitating the non-adhesive portion. and formed by disposing the opening structure, food packaging containers to prevent leakage. 2. water pressure inner surface layer is a nonwoven fabric is a layer which does not transmit liquid through the gas having a small hole is 1 cmH 2 O or more, 2. A food packaging container which prevents leakage, which is a layer formed of a film selected from a porous film and a perforated film 3. The outer surface which is a layer which does not transmit both gas and liquid. The layer is a synthetic resin film, a laminated film of the film, 3. A leakage-prevented food packaging container according to item 1 or 2, which is a layer selected from a film obtained by vapor-depositing a metal or the like, a metal foil, or a laminate with paper. Claims 1 to 3 wherein at least a part of the periphery of the non-adhesion portion of the inner layer and the outer layer is adhered by an adhesion portion which is easily peelable and does not communicate with the outside, and the other periphery is adhered by a strong adhesion portion. 4. A food packaging container in which leakage is prevented, according to any one of 5. 5. An easily sealable sealing portion of the container by exposing an end of an adhesive portion which is easily peelable and which does not communicate with the outside, of the easy opening structure portion. 5. The food packaging container according to any one of items 1 to 4, wherein the outer peripheral layer and the inner surface layer have a non-adhesive portion and are easily peelable and do not communicate with the outside. The bonding portion according to any one of Items 1 to 5, wherein the bonding portion is a bonding portion that opens to the outside by pressure. 6. A food packaging container in which leakage is prevented according to any one of claims 1. 7. An adhesive portion which is easily peelable at the periphery of the non-adhesive portion between the outer surface layer and the inner surface layer and does not communicate with the outside, when the container is heated. It is an adhesive part that opens to the outside by steam heat and pressure from the
Item 6. The food packaging container according to any one of Items 1 to 5, which prevents leakage. 8. The periphery of the non-adhesion portion between the inner surface layer, which is a layer having micropores having a water pressure resistance of 1 cmH 2 O or more and which is permeable to liquid and does not transmit liquid, and the outer surface layer, which is a layer not permeable to both gas and liquid, is easily formed. 9. The method according to any one of claims 1 to 7, wherein the adhesive that is peelable and does not communicate with the outside is a weak adhesive, an adhesive or a heat-sensitive adhesive having a weak adhesive force.
Food packaging container that prevents leakage. 9. 9. The container according to any one of items 1 to 8, wherein the container is a bag, and the end portion of the adhesive portion that is easily peelable and does not communicate with the outside of the easy-open structure portion is exposed to the outside and disposed on the hermetically sealed portion of the bag.
The food packaging container described in the paragraph, which prevents leakage. 10. The container is a molded container such as a cup, a tray, a bottle, or the like, and the end portion of the adhesive portion that is easily peelable and does not communicate with the outside of the easy-opening structure portion is exposed to the outside and disposed on the hermetically sealed portion of the container and the lid. 9. The food packaging container according to any one of items 1 to 8, wherein the food packaging container has leakage prevention. 11. A non-adhesion part is formed in a part of the container between an inner surface layer that transmits gas having fine pores having a water pressure resistance of 1 cmH 2 O or more and does not transmit liquid, and an outer layer that does not transmit both gas and liquid. The peripheral edge is adhered by a strong adhesive portion, and an easy-opening structure portion is provided between the inner layer and the outer layer, in which at least a portion of the outer surface layer of the non-adhesive portion that does not adhere to both layers has an easy-perforated portion. , Food packaging container that prevents leakage. 12. The inner surface layer, which is a layer that is permeable to gas having fine pores having a water pressure resistance of 1 cmH 2 O or more and does not transmit liquid, is a layer formed of a film selected from a nonwoven fabric, a porous film, and a perforated film. 11. A food packaging container according to item 11, wherein leakage is prevented. 13. Item 11. The outer surface layer, which is a layer that does not transmit both gas and liquid, is a layer selected from a synthetic resin film, a laminated film of the film, a film obtained by depositing a metal or the like on these films, and a laminate of a metal foil or paper. Or the food packaging container described in 12 which prevented leakage. 14． Item 14. The food packaging container according to any one of Items 11 to 13, wherein the easily perforated portion of the easily opened structure portion is a thin film portion in which at least a part of the outer layer has a reduced thickness. 15. 14. The food package for preventing leakage according to any one of items 11 to 13, wherein the easily perforated portion of the easily opened structure portion is a low-temperature melting portion in which at least a part of an outer layer is formed of a hot-melt type synthetic resin. container. 16. 13. The easy-peelable sealing portion in which the easy-piercing portion of the easy-opening structure portion cuts out at least a part of the outer layer, and adheres and seals another film with the easy-peelable adhesive.
A food packaging container in which the leakage described in any one of the above items has been prevented. 17． The easily perforated portion of the easily opened structure portion is an easily torn portion in which at least a part of the outer layer is formed by a uniaxially stretched film.
A food packaging container according to any one of paragraphs 11 to 13, wherein the leakage is prevented. 18. Item 12. The leakage-prevented food packaging container according to item 11, wherein the container is a bag, and the easy-opening structure portion provided with the easy-piercing portion is provided on the body. 19. The food packaging for preventing leakage according to item 11, wherein the container is a molded container such as a cup, a tray, a bottle, or the like, and the easy-opening structure portion provided with the easy-perforated portion is provided on the top plate portion of the lid. container. 20. The food packaging container according to claim 11, wherein the container is a molded container such as a cup, a tray, a bottle, or the like, and the easy-opening structure portion provided with the easy-piercing portion is provided at the upper portion of the body portion. . 21. 21. The food packaging container according to any one of claims 1 to 20, wherein the container body is formed of metal, glass, plastic, paper, and a laminate or composite thereof. About.
【０００６】[0006]
【発明の実施の形態】本発明で容器の一部に配設する易
開通構造としては内面層を気体を透過するが液体を透過
しない層とし、この内面層と気体と液体の両者を透過し
ない外面層とを易剥離性でかつ外部と連通しない接着に
より周縁の少なくとも一部を接着し、内層と外層の間に
両層と接着しない非接着部を形成した易開通構造部が好
適である。このように容器の一部に易開通構造部を配設
したのは、この容器を加熱すると内容物から発生した蒸
気はガスであるので内面層を通って内面層と外面層の間
に形成された非接着部に侵入し、内面層と外面層を押圧
する。内面層と外面層の弱い接着力により接着されてい
る易剥離性部分は蒸気圧により剥離し蒸気は剥離部を通
って外部に放出されるので容器の破裂は発生しない。こ
の様な構造の易開通構造部は易剥離性接着部が剥離した
とき非接着部が外部と連通するため、易剥離性接着部の
少なくとも一部が外部に露出していることが好ましく、
容器の端部に配設することにより簡単に露出させること
がができ、蓋と容器本体の密着部や袋のシール部に設置
することが実用的である。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, as an easy-open structure provided in a part of a container, the inner surface layer is a layer that transmits gas but does not transmit liquid, and does not transmit both the inner layer and gas and liquid. An easy-opening structure portion in which the outer layer is easily peelable and at least a part of the periphery is adhered by adhesion that does not communicate with the outside, and a non-adhesion portion that does not adhere to both layers is formed between the inner layer and the outer layer is preferable. The reason why the easy-opening structure is arranged in a part of the container is that, when the container is heated, the vapor generated from the contents is a gas, so that the vapor is formed between the inner surface layer and the outer surface layer through the inner surface layer. Intrudes into the non-adhesive part and presses the inner surface layer and the outer surface layer. The easily peelable portion bonded by the weak adhesive force between the inner surface layer and the outer surface layer is peeled off by the vapor pressure, and the vapor is released to the outside through the peeled portion, so that the container does not burst. Since the non-adhesive portion communicates with the outside when the easily peelable adhesive portion is peeled off, it is preferable that at least a part of the easily peelable adhesive portion is exposed to the outside,
It can be easily exposed by arranging it at the end of the container, and it is practical to install it at the close contact portion between the lid and the container body or at the seal portion of the bag.
【０００７】本発明で言う易剥離性接着とは５０℃以上
の接着力が内面層と容器との接着力より小さければよ
く、１０００ｇ以下／ｃｍの接着力を意味する。易開通
構造部の内面を気体を透過するが液体を透過しない層と
したので、店頭で加熱した容器を持ち帰る際や、加熱し
て加熱装置から取り出すときに容器が転倒しても、内容
物が漏洩することはなく、安全かつ衛生的である。[0007] The easily peelable adhesive referred to in the present invention means that the adhesive strength at 50 ° C or higher is smaller than the adhesive strength between the inner layer and the container, and means an adhesive strength of 1000 g / cm or less. Since the inner surface of the easy-opening structure is a layer that allows gas to permeate but does not allow liquid to permeate, even if the container falls down when bringing the container heated at the store or taking it out of the heating device by heating, the contents will not be lost. No leakage, safe and sanitary.
【０００８】ここでいう気体が透過しない膜とは透気度
が０．０１ｃｃ／ｃｍ２／ｓｅｃ以下の膜を示し、また
液体を透過しない膜とは耐水圧が１ｃｍＨ２Ｏ以上の膜
をいう。本発明の容器の内面層は、不織布、多孔質膜、
孔開け加工した膜等であるが、気体は透過し、液体は不
透過の性能を得るため、それらの膜の材質や厚みそして
孔径を調整し、耐水圧が１ｃｍＨ２Ｏ以上である必要が
あり、特に、３ｃｍＨ２Ｏ以上の膜が好ましい。耐水圧
があまり大きいと材料が高価格となるので１ｃｍＨ２Ｏ
〜８０ｃｍＨ２Ｏが好ましい。なお、ここでいう耐水圧
とはＪＩＳ Ｌ１０９２の耐水度試験法のＡ法に準じる
試験法である。[0008] The film that does not allow gas permeation refers to a film having an air permeability of 0.01 cc / cm 2 / sec or less, and the film that does not permeate liquid means a film having a water pressure resistance of 1 cmH 2 O or more. . The inner surface layer of the container of the present invention is a nonwoven fabric, a porous membrane,
It is a perforated membrane, etc. In order to obtain gas-permeable and liquid-impermeable performance, it is necessary to adjust the material, thickness and pore diameter of those membranes, and to have a water pressure resistance of 1 cmH 2 O or more. In particular, a film of 3 cmH 2 O or more is preferable. If the water pressure is too high, the material becomes expensive, so 1 cmH 2 O
~80cmH 2 O is preferred. The water pressure here is a test method according to the method A of the water resistance test method of JIS L1092.
【０００９】また、本発明の容器の易開通構造部の外面
層に適したプラスチック材料としては、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−メチルペンテン
−１、低密度ポリエチレン、中密度ポリエチレン、ある
いは高密度ポリエチレン、直鎖状低密度ポリエチレン、
エチレン−酢酸ビニル共重合体（ＥＶＡ）、ＥＶＡケン
化物、エチレン−アクリル酸エチル共重合体（ＥＥ
Ａ）、イオン架橋オレフィン共重合体（アイオノマ
ー）、環状オレフィン等のポリオレフィン類；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ニル
共重合体；ポリ塩化ビニル、塩化ビニリデン樹脂等のハ
ロゲン化ビニル共重合体；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、アクリロニトリル−ス
チレン−ブタジエン共重合体のようなニトリル重合体；
ナイロン６、ナイロン６６、パラ又はメタキシリレンア
ジパミドのようなポリアミド樹脂；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；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
脂フイルムや、これ等のフイルムを積層したフイルム
や、これ等に金属を蒸着したフイルムや、金属箔、紙等
との積層体が使用されるが、電子レンジ加熱用には金属
を用いることは好ましくない。The plastic material suitable for the outer layer of the easily opened structure of the container of the present invention includes, for example, crystalline polypropylene, crystalline propylene-ethylene copolymer,
Crystalline polybutene-1, crystalline poly-4-methylpentene-1, low density polyethylene, medium density polyethylene, or high density polyethylene, linear low density polyethylene,
Ethylene-vinyl acetate copolymer (EVA), saponified EVA, ethylene-ethyl acrylate copolymer (EE
A), polyolefins such as ion-crosslinked olefin copolymers (ionomers) and cyclic olefins; aromatic vinyl copolymers such as polystyrene and styrene-butadiene copolymer; vinyl halide copolymers such as polyvinyl chloride and vinylidene chloride resin Polymer; polyacrylic resin; nitrile polymer such as acrylonitrile-styrene copolymer, acrylonitrile-styrene-butadiene copolymer;
Polyamide resins such as nylon 6, nylon 66, para- or meta-xylylene adipamide; polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; various polycarbonates; fluororesins; thermoplastics such as polyacetals such as polyoxymethylene. A resin film, a film in which these films are laminated, a film in which a metal is deposited on these films, a laminate of metal foil, paper, etc. are used.However, it is not possible to use a metal for microwave heating. Not preferred.
【００１０】易開通構造部は内面層と外面層の間に配置
された両層と接着しない非接着部は両層間に空隙を形成
してもよく、単に接着しないで両層が重なっている形状
でもよい。内面層と外面層は互いに強く接着されていて
もよいが、少なくとも非接着部に接続する弱い接着力で
接着した易剥離性接着部が配置されているので、容器を
加熱したときの蒸気熱圧が非接着部に侵入し、そこに接
続している易剥離性接着部を剥離し、外部と連通する。
易剥離性接着部は例えば接着力の弱い接着剤や粘着剤に
よる接着が用いられる。この他蒸気の熱により接着力が
低下する感熱性接着剤も使用される。In the easy-open structure portion, a non-adhesion portion that is not bonded to both layers disposed between the inner surface layer and the outer surface layer may form a gap between the two layers, and the two layers overlap without being bonded. May be. The inner surface layer and the outer surface layer may be strongly adhered to each other, but since the easily peelable adhesive portion bonded with at least a weak adhesive force connected to the non-adhesive portion is arranged, the steam heat pressure when the container is heated Penetrates into the non-adhesive part, peels off the easily peelable adhesive part connected thereto, and communicates with the outside.
For the easily peelable adhesive portion, for example, an adhesive having a weak adhesive strength or an adhesive is used. In addition, a heat-sensitive adhesive whose adhesive strength is reduced by the heat of steam is also used.
【００１１】本発明の容器はカップ、トレー、ボトル等
の成形品または袋である。本発明はこの易開通構造部を
容器の一部に配設するものであり、容器本体は通常の合
成樹脂フイルム、紙、積層体等で形成することができ
る。この他容器自体をガスは透過するが液体を透過しな
い内面層と、ガスと液体を透過しない外面層とを積層し
た積層体で形成し、器壁や蓋の一部に両層が接着しない
非接着部を設け、該非接着部の周縁の接着部の一部を弱
接着として、容器の一部に易開通構造部を配設すること
もできる。このように内面層と外面層の周縁に弱接着部
を設けた易開通構造部はカップ、トレー、ボトル等の成
形品の場合は容器本体と蓋体との被蓋部に易開通構造部
を設置することが好ましい。袋の場合は袋を密封するシ
ール部に易開通構造部を配置することが好ましい。容器
本体は金属、ガラス、プラスチック、紙、これ等の積層
体または複合体で形成される。蓋体も同様であるが、電
子レンジ加熱用容器の場合は金属を用いることは好まし
くない。The container of the present invention is a molded article such as a cup, a tray, a bottle, or a bag. In the present invention, the easy-opening structure is provided in a part of the container, and the container main body can be formed of ordinary synthetic resin film, paper, a laminate, or the like. In addition, the container itself is formed of a laminated body in which an inner layer that is permeable to gas but does not transmit liquid and an outer layer that is not permeable to gas and liquid are laminated. An adhesive portion may be provided, and a part of the adhesive portion on the periphery of the non-adhesive portion may be weakly adhered, and an easy-open structure portion may be provided on a part of the container. In the case of molded products such as cups, trays, bottles, etc., the easy-open structure portion provided with a weak adhesive portion on the periphery of the inner surface layer and the outer surface layer has the easy-open structure portion on the cover portion between the container body and the lid. It is preferable to install. In the case of a bag, it is preferable to dispose the easy-opening structure portion in a seal portion that seals the bag. The container body is formed of metal, glass, plastic, paper, or a laminate or composite thereof. The same applies to the lid, but in the case of a microwave heating container, it is not preferable to use metal.
【００１２】また本発明において、容器の一部に配設す
る易開通構造部としては、前述の内面層と外面層の両層
の間に非接着部を設けその周縁に易剥離性接着部を設け
たものの他、気体を透過し、液体を透過しない内面層
と、気体と液体の両者を透過しない外面層の間に非接着
部を形成し、該非接着部の周縁を強固に接着し、非接着
部の外面層の少なくとも一部に易穿孔部を配設した易開
通構造部でもよい。このような易穿孔部も内容物が加熱
されると発生した蒸気が非接着部に侵入し、内面層と外
面層を熱圧するので易穿孔部が破れ穿孔して外部も開通
し容器の破裂は防止される。易穿孔部としては、非接着
部の外面層の少なくとも一部の膜厚を薄くした薄膜部
や、非接着部の外面層の少なくとも一部をホットメルト
型の合成樹脂で形成した低温溶融部や、接着部の外面層
の一部を切開し、この切開部に易剥離性接着剤により他
のフイルムを貼着して封止した易剥離封止部や、非接着
部の外面層の少なくとも一部を１軸延伸フイルムで形成
した易引裂部等が用いられる。易穿孔部としてホットメ
ルト型合成樹脂で形成した低温溶融部を配設する場合は
外面層フイルムに孔を配設し、この孔をホットメルト型
合成樹脂で埋めるのが実際的である。容器が袋の場合は
易穿孔部を設けた易開通構造部は胴部に設けることが好
ましく、容器がカップ、トレー、ボトル等の成形容器の
場合は蓋の天板や容器の胴部の上部に配設することが好
ましい。容器本体、蓋、袋等は金属、ガラス、プラスチ
ック、紙及びこれ等の積層体または複合体で形成するこ
とができる。容器の加熱は電子レンジ加熱の他湯煎加
熱、直火加熱、電磁加熱が用いられる。Further, in the present invention, as the easy-opening structure portion provided in a part of the container, a non-adhesive portion is provided between the inner surface layer and the outer surface layer, and an easily peelable adhesive portion is provided on the periphery thereof. In addition to those provided, a non-adhesive portion is formed between an inner surface layer that transmits gas and does not transmit liquid and an outer layer that does not transmit both gas and liquid, and the periphery of the non-adhesive portion is firmly adhered to the non-adhesive portion. An easy-opening structure in which an easy-piercing portion is provided on at least a part of the outer surface layer of the bonding portion may be used. In such an easily pierced portion, the vapor generated when the contents are heated enters the non-adhesive portion, and heat-presses the inner surface layer and the outer surface layer. Is prevented. As the easily perforated portion, a thin film portion in which the thickness of at least a part of the outer surface layer of the non-adhesive portion is reduced, or a low-temperature melting portion in which at least a portion of the outer surface layer of the non-adhesive portion is formed of a hot-melt type synthetic resin, At least one of the easily peelable sealing portion in which a part of the outer surface layer of the bonded portion is cut and another film is adhered to the cut portion with a peelable adhesive and sealed, or the outer surface layer of the non-bonded portion. An easily tearable portion or the like formed of a uniaxially stretched film is used. When a low-temperature melting portion formed of a hot-melt synthetic resin is provided as an easily perforated portion, it is practical to provide a hole in the outer layer film and fill the hole with the hot-melt synthetic resin. When the container is a bag, it is preferable that the easy-opening structure portion provided with the easy-perforated portion is provided on the body, and when the container is a molded container such as a cup, tray, or bottle, the top plate of the lid or the upper part of the body of the container. It is preferable to dispose it in The container body, lid, bag, and the like can be formed of metal, glass, plastic, paper, and a laminate or composite thereof. For heating the container, microwave heating, hot water heating, direct flame heating, and electromagnetic heating are used.
【００１３】[0013]
【実施例】本発明を実施例について具体的に説明する。EXAMPLES The present invention will be described specifically with reference to examples.
【００１４】図１は容器として成形体を用い内面層と外
面層の周縁の少なくとも一部を弱接着した易開通構造部
９を配設した実施例である。１は容器本体である。２は
開口部を密封する蓋体であり、気体と液体を透過しない
外面層を形成する膜３と液体を透過しないが気体を透過
する内面層を形成する膜４とを積層し両層間に非接着部
５が配設されている。易開通構造部９の易剥離性接着部
は内面層の通気性を遮断した接着でなければならない。
そうでないとこの易開通構造部の内面層はガス透過性を
有するため外気が侵入し、菌、異臭等により汚染される
からである。蓋体の周縁部は容器本体外周縁に設置され
たフランジ７に接着されている。FIG. 1 shows an embodiment in which a molded body is used as a container and an easy-opening structure 9 in which at least a part of the periphery of an inner surface layer and an outer surface layer is weakly bonded is provided. 1 is a container main body. Reference numeral 2 denotes a lid for sealing the opening, which is formed by laminating a film 3 forming an outer layer that does not transmit gas and liquid and a film 4 forming an inner layer that does not transmit liquid but transmitting gas. An adhesive portion 5 is provided. The easily peelable adhesive portion of the easy opening structure portion 9 must be an adhesive that blocks the air permeability of the inner surface layer.
Otherwise, the inner surface layer of the easy-open structure has gas permeability, so that the outside air enters and is contaminated by bacteria, unpleasant odor and the like. The peripheral edge of the lid is adhered to a flange 7 provided on the outer peripheral edge of the container body.
【００１５】図２は容器本体のフランジと蓋体の一部に
形成された易開通構造部９を拡大して説明する。フラン
ジ７には蓋体の易開通構造部の内面層である気体を透過
するが液体を透過しない膜４が強接着している。この強
接着は加熱時に内容物からの蒸気圧で開封しない接着強
度があればよく、該接着強度を有するものであれば加熱
後開封するのに便利な易剥離性シールでもよい。蓋体の
外面層である３は弱い接着力の易剥離性接着部６で内面
層４に接着している。内面層と外面層の間には非接着部
５が形成されており、該非接着部５に接触して易剥離性
接着部６が配設されている。FIG. 2 is an enlarged view of the easy-opening structure 9 formed on the flange of the container body and a part of the lid. A membrane 4 that is permeable to gas but not permeable to liquid, which is the inner layer of the easy-open structure of the lid, is strongly adhered to the flange 7. The strong bond only needs to have an adhesive strength that does not open due to the vapor pressure of the contents when heated, and a peelable seal that is convenient to open after heating may be used as long as it has the adhesive strength. The outer surface layer 3 of the lid is adhered to the inner surface layer 4 by an easily peelable adhesive portion 6 having a weak adhesive force. A non-adhesive portion 5 is formed between the inner surface layer and the outer surface layer, and an easily peelable adhesive portion 6 is provided in contact with the non-adhesive portion 5.
【００１６】図３は容器が加熱されたところを示す。蒸
気は矢印の方向に運動して気体を透過する内面層４を透
過して非接着部に侵入し、気体を透過しない外面層３を
押し上げる。このため蓋体と容器本体の接着部９に圧力
が加えられる。図４は蓋体の外面層３と内面層４を接着
している弱い接着力の易剥離性接着部６が剥離し、非接
着部５が外方と開通して開通部８が形成され蒸気が放出
されるところを示す。内面層４は容器本体のフランジ７
と強接着しているので蒸気圧では剥離しない。蒸気圧に
よる剥離はもっぱら外面層と内面層を弱い接着力で接着
する易剥離性接着部６に発生する。FIG. 3 shows the container heated. The vapor moves in the direction of the arrow and permeates the gas-permeable inner surface layer 4 to penetrate into the non-bonded portion, and pushes up the gas-impermeable outer surface layer 3. For this reason, pressure is applied to the bonding portion 9 between the lid and the container body. FIG. 4 shows an easily peelable adhesive portion 6 having a weak adhesive strength, which bonds the outer surface layer 3 and the inner surface layer 4 of the lid, and the non-adhesive portion 5 is opened to the outside to form the open portion 8 and the steam is formed. Shows where is released. The inner layer 4 is a flange 7 of the container body.
And does not peel off with vapor pressure. The peeling due to the vapor pressure occurs mainly in the easily peelable bonding portion 6 that bonds the outer surface layer and the inner surface layer with a weak bonding force.
【００１７】図５は加熱し弱い易剥離性接着部は剥離し
非接着部が外部と開通した容器を転倒したところを示
す。液体は内面層に向って移動するが内面層は液体を透
過しないので非接着部に流入せず、剥離した開通部８か
ら外方に流出することはない。つまり転倒しても漏洩し
ないのである。図６は容器を蓋の上方から俯瞰した図で
あり、７はフランジ、９は易開通構造部であり、この例
のように両端に配設されてもよく一端のみでもよい。５
は内面層と外面層の間に形成された非接着部５である。
このように易開通構造部は容器の一部に形成されていれ
ばよく、この例で蓋とフランジの接着部全面を易開通構
造部としてもよい。このように全面を該積層構造とする
と加熱したとき蓋の外面層は分離するが内面層が残るの
で漏洩は生じない。FIG. 5 shows a case where the weakly peelable adhesive portion is peeled off by heating and the container whose non-adhesive portion is opened to the outside is turned over. Although the liquid moves toward the inner surface layer, the inner layer does not permeate the liquid, so that the liquid does not flow into the non-adhesive portion and does not flow out from the peeled opening portion 8. In other words, it does not leak even if it falls. FIG. 6 is a top view of the container from above the lid, 7 is a flange, 9 is an easily openable structure, and may be provided at both ends as in this example, or may be only one end. 5
Is a non-adhesive portion 5 formed between the inner surface layer and the outer surface layer.
Thus, the easy-opening structure may be formed in a part of the container, and in this example, the entire surface of the bonding portion between the lid and the flange may be the easy-opening structure. When the entire surface has the laminated structure, the outer surface layer of the lid separates when heated, but the inner surface layer remains, so that no leakage occurs.
【００１８】図７は容器が袋の場合である。９は易開通
構造部であり、１０の部分には内面層と外面層の間に非
接着部が形成されている。この例は四方シールの袋であ
るが図８の如く三方シールの袋としても同様である。袋
の場合も袋の一部にこのような易開通構造部を設ければ
よい。図９は容器が袋の場合の易開通構造部の説明図で
ある。３は液体も気体も透過しない外面層である。４は
気体は透過するが液体は透過しない内面層である。５は
両層間に設けられた非接着部であり、６は内面層と外面
層の間に設けられた弱い接着力で接着した接着部であ
る。FIG. 7 shows a case where the container is a bag. Reference numeral 9 denotes an easy-opening structure portion, and a non-adhesion portion is formed at the portion 10 between the inner surface layer and the outer surface layer. This example is a four-side sealed bag, but the same applies to a three-side sealed bag as shown in FIG. In the case of a bag, such an easy-opening structure may be provided in a part of the bag. FIG. 9 is an explanatory view of the easy-opening structure when the container is a bag. Reference numeral 3 denotes an outer layer through which neither liquid nor gas permeates. Reference numeral 4 denotes an inner surface layer through which gas passes but liquid does not pass. Reference numeral 5 denotes a non-adhesive portion provided between both layers, and reference numeral 6 denotes an adhesive portion provided between the inner surface layer and the outer surface layer and adhered with a weak adhesive force.
【００１９】図１０は容器が成形体であり、容器の少な
くとも一部に設けた易開通構造部が内面層と外面層の間
に設けられた非接着部の外面層に易穿孔部を配設した構
造部からなる例である。１は容器本体であり、蓋２が容
器本体のフランジ７に接着している。蓋はガスも液体も
透過しない外面層３とガスは透過するが液体は透過しな
い内面層４からなり、両層の間には非接着部５が設けら
れている。非接着部の周縁は強接着である。非接着部の
外面層には易穿孔部１１からなる易開通構造部が設置さ
れている。FIG. 10 shows a case where the container is a molded body, and the easy-opening structure portion provided on at least a part of the container has an easy-perforating portion provided on the outer surface layer of the non-adhesive portion provided between the inner surface layer and the outer surface layer. It is an example consisting of a structured part. Reference numeral 1 denotes a container body, and a lid 2 is adhered to a flange 7 of the container body. The lid is composed of an outer layer 3 that is impermeable to gas and liquid, and an inner layer 4 that is permeable to gas but not liquid, and a non-adhesive portion 5 is provided between the two layers. The periphery of the non-bonded portion is strongly bonded. On the outer surface layer of the non-adhesion portion, an easy-opening structure portion including the easy-piercing portion 11 is provided.
【００２０】図１１は易穿孔部の例を示す。１１は非接
着部５の上方の外面層３の一部の膜厚を薄くして易穿孔
部とした例である。容器を加熱すると蒸気はガスを透過
する内面層４を通って矢印の方向に移動して非接着部５
に侵入し外面層を押し上げる。こうして内圧が大きくな
ると外面層の薄肉部１１は破れて穿孔し蒸気は外方に脱
出する。容器が倒れても内面層は液体を通さないので洩
れることはない。図１２は、ホットメルト型樹脂で易穿
孔部を形成した例である。１１は易穿孔部であって、非
接着部５の上方の外面層に予め孔１２を設けこの孔をホ
ットメルト型樹脂１３で充填して易穿孔部とする。容器
を加熱すると蒸気はガスを透過する内面層４を通って矢
印の方向に移動して非接着部５に侵入し外面層を押し上
げる。こうして内圧が大きくなり、易穿孔部は加熱加圧
されるのでホットメルト型樹脂が溶融し穿孔される。図
１３は易剥離性樹脂を用いて穿孔部を形成した例であ
る。１１は易穿孔部であって、非接着部５の上方の外面
層に予め孔１２を設けこの孔に易剥離性接着剤１４を用
いて他のフイルム１５を貼着して孔１２を封止し易穿孔
部とする。容器を加熱すると蒸気はガスを透過する内面
層４を通って矢印の方向に移動して非接着部５に侵入し
外面層を押し上げる。こうして内圧が大きくなると易剥
離性接着剤は剥離し孔があいて蒸気は外方に脱出する。
この該非接着部の外面層の少なくとも一部を一軸延伸フ
イルムで形成し、蒸気圧で開裂させる穿孔部からなる易
開通構造部も用いられる。以上の例では易開通構造部蓋
に配設したが胴部、特に胴部上方に設けることも好まし
い。また袋の場合はこのような易穿孔部からなる易開通
構造部は袋の胴部に配設することが実用上有利である。FIG. 11 shows an example of the easy perforation portion. Reference numeral 11 denotes an example in which the thickness of a part of the outer surface layer 3 above the non-adhesive portion 5 is reduced to form an easily perforated portion. When the container is heated, the vapor moves in the direction of the arrow through the gas-permeable inner surface layer 4 and moves to the non-adhered portion 5.
And push up the outer layer. When the internal pressure increases in this manner, the thin portion 11 of the outer surface layer is broken and pierced, and the steam escapes outward. Even if the container falls down, the inner surface layer does not allow the liquid to pass through, so that it does not leak. FIG. 12 shows an example in which an easily perforated portion is formed by a hot melt type resin. Reference numeral 11 denotes an easily pierced portion, in which a hole 12 is provided in advance on the outer surface layer above the non-adhesive portion 5 and the hole is filled with a hot melt resin 13 to form an easily pierced portion. When the container is heated, the vapor moves in the direction of the arrow through the gas-permeable inner surface layer 4 and enters the non-adhesive portion 5 to push up the outer surface layer. In this way, the internal pressure increases, and the easily perforated portion is heated and pressurized, so that the hot melt resin is melted and perforated. FIG. 13 shows an example in which a perforated portion is formed using an easily peelable resin. Reference numeral 11 denotes an easily perforated portion, in which a hole 12 is provided in advance on the outer surface layer above the non-adhesive portion 5, another film 15 is adhered to the hole using an easily peelable adhesive 14, and the hole 12 is sealed. And easy to perforate. When the container is heated, the vapor moves in the direction of the arrow through the gas-permeable inner surface layer 4 and enters the non-adhesive portion 5 to push up the outer surface layer. When the internal pressure is increased in this manner, the easily peelable adhesive is peeled off and a hole is formed, and the vapor escapes outward.
At least a part of the outer surface layer of the non-adhesive portion is formed of a uniaxially stretched film, and an easy-open structure portion including a perforated portion that is cleaved by vapor pressure is also used. In the above example, the cover is provided on the easy-opening structure portion cover, but it is also preferable to provide the cover on the trunk, particularly above the trunk. Further, in the case of a bag, it is practically advantageous to dispose such an easy-opening structure portion including the easy-piercing portion on the body of the bag.
【００２１】実施例１ フランジを有するＰＰ製カップ（フランジ径：７５ｍ
ｍ、口径：６０ｍｍ、底径：５０ｍｍ、高さ：３５ｍ
ｍ、内容積：９０ｃｃ）に内容物として、水を７０ｃｃ
充填し、蓋材としてＰＰ製不織布（三井石油化学製シン
テックスＭＢ、Ｖ３０５０ＮＩＥ、通気度：２５ｃｃ／
ｃｍ２／ｓｅｃ）と３０μＬＬＤＰＥ／接着剤／１２μ
ポリエステル積層体を用いて、不織布とＬＬＤＰＥ層を
部分的に熱接着し、不織布／一部非接着／ＬＬＤＰＥ／
接着剤／ポリエステル積層体を形成し、蓋材とした。Ｐ
Ｐ製不織布側を内側に配置し、ＰＰ製カップにヒートシ
ール（１８０℃４ｓｅｃ）して得た、図１のカップを用
いた。ＰＰ製カップとＰＰ製不織布は強接着（１８００
ｇ／１５ｍｍ）であるが、ＰＰ製不織布とＬＬＤＰＥ間
は易剥離性接着（２５０ｇ／１５ｍｍ）であった。な
お、ＰＰ製不織布とＬＬＤＰＥ間は部分的に非接着部で
あり、非接着部の形状は蓋材の中央幅１５ｍｍの矩形状
で図６に示されるように、易開通構造部９を形成してい
る。この容器を電子レンジ（５００Ｗ）で３分間加熱し
た結果、容器の破裂もなく、内容物は沸騰しＰＰ製不織
布とＬＬＤＰＥの間の易剥離性接着部が剥離して外部と
非接着部が開通した。さらに加熱後容器を転倒させて
も、内容物が漏洩することもなかった。Example 1 PP cup having flange (flange diameter: 75 m)
m, diameter: 60 mm, bottom diameter: 50 mm, height: 35 m
m, content: 90 cc), 70 cc of water as contents
Filled and used as a lid material is a PP nonwoven fabric (Mitsui Petrochemical Syntex MB, V3050NIE, air permeability: 25 cc /
cm 2 / sec) and 30 μL LDPE / adhesive / 12 μ
Using a polyester laminate, the non-woven fabric and the LLDPE layer are partially thermally bonded, and the non-woven fabric / partially non-bonded / LLDPE /
An adhesive / polyester laminate was formed and used as a lid. P
The cup of FIG. 1 obtained by disposing the nonwoven fabric side made of P on the inside and heat-sealing (180 ° C. for 4 seconds) the cup made of PP was used. The PP cup and PP nonwoven fabric are strongly bonded (1800
g / 15 mm), but easily peelable adhesive (250 g / 15 mm) between the PP nonwoven fabric and the LLDPE. In addition, the non-adhesion part is partially formed between the PP nonwoven fabric and the LLDPE, and the shape of the non-adhesion part is a rectangular shape with a center width of 15 mm of the lid member, as shown in FIG. ing. The container was heated in a microwave oven (500 W) for 3 minutes. As a result, the container was not ruptured, the contents were boiled, the easily peelable adhesive portion between the PP nonwoven fabric and the LLDPE was peeled, and the non-adhesive portion was opened to the outside. did. Furthermore, even if the container was turned over after heating, the contents did not leak.
【００２２】比較例１ 不織布とＬＬＤＰＥ間の熱接着において、層間に非接着
部がないように全面接着した以外は実施例１と同じ容器
を形成し、電子レンジ加熱を行った結果、加熱１分後に
内容物の内圧上昇にともない容器が破裂した。Comparative Example 1 In the thermal bonding between the nonwoven fabric and the LLDPE, the same container as in Example 1 was formed except that the entire surface was bonded so that there was no non-bonded portion between the layers. Later, the container ruptured due to an increase in the internal pressure of the contents.
【００２３】比較例２ 不織布の通気量が２８０ｃｃ／ｃｍ２／ｓｅｃであるｐ
ｐ製不織布（三井石油化学製シンテックスＰＳ−１０
６）以外は実施例１と同じ容器を形成し、電子レンジ加
熱を行った結果、加熱３分でも容器の破裂は生じなかっ
たが、加熱後容器を転倒した場合、内容物が漏洩した。COMPARATIVE EXAMPLE 2 A nonwoven fabric having a ventilation volume of 280 cc / cm 2 / sec
p nonwoven fabric (Mitsui Petrochemical's Syntex PS-10
Except for 6), the same container as in Example 1 was formed, and as a result of performing microwave heating, the container did not burst even after heating for 3 minutes. However, when the container was turned over after heating, the contents leaked.
【００２４】比較例３ ＰＰ製不織布とＬＬＤＰＥフイルムとの接着を熱シール
の易剥離性接着ではなく、強接着（１５００ｇ／１５ｍ
ｍ）であるウレタン系接着剤で接着したこと以外は実施
例１と同じ容器を形成し、電子レンジ加熱を行った結
果、加熱１分後に内容物の内圧上昇にともない容器が破
裂した。Comparative Example 3 Adhesion between the PP nonwoven fabric and the LLDPE film was not strong peeling adhesion of heat sealing but strong adhesion (1500 g / 15 m).
m) A container was formed in the same manner as in Example 1 except that the container was adhered with the urethane adhesive, and as a result of microwave heating, the container burst after 1 minute of heating due to an increase in the internal pressure of the contents.
【００２５】実施例２ フランジを有するＰＰ製カップ（フランジ径：７５ｍ
ｍ、口径：６０ｍｍ、底径：５０ｍｍ、高さ：３５ｍ
ｍ、内容積：９０ｃｃ）に内容物として、水を７０ｃｃ
充填し、蓋材としてＰＰ製不織布（三井石油化学製シン
テックスＭＢ、Ｖ３０７０ＮＩＥ、通気度：１５ｃｃ／
ｃｍ２／ｓｅｃ）と２０μＬＬＤＰＥ／２０μ粘着剤
（リンテック株式会社製、スーパーテック ＰＥＴ−２
０）の積層体を用いた。蓋の中央に位置する直径３０ｍ
ｍ円形状の粘着剤を溶剤で除去し、不織布／粘着剤（一
部除去）／ポリエステルフイルムになるように積層し、
蓋材とした。ＰＰ製不織布側を内側に配置し、ＰＰ製カ
ップにヒートシール（１８０℃４ｓｅｃ）し容器とし
た。ＰＰ製カップとＰＰ製不織布間は強接着（１８００
ｇ／１５ｍｍ）であるが、ＰＰ製不織布とポリエステル
間は易剥離性接着（１５０ｇ／１５ｍｍ）となり、さら
にＰＰ製不織布とポリエステル間は部分的に非接着部
（円形状）が存在し、不織布とポリエステルは易剥離性
となっている。このような易開通構造部を形成した容器
を電子レンジ（５００Ｗ）３分間加熱したＢところ、内
容物は沸騰し非接着部に侵入した蒸気の圧により不織布
とポリエステルが剥離して外部と開通し容器の破裂も発
生しなかった。さらに加熱後容器を転倒させても、不織
布が内容物を遮断しているので漏洩することもなかっ
た。Example 2 PP cup having flange (flange diameter: 75 m)
m, diameter: 60 mm, bottom diameter: 50 mm, height: 35 m
m, content: 90 cc), 70 cc of water as contents
Filled and used as a cover material is a PP nonwoven fabric (Mitsui Petrochemical's Syntex MB, V3070NIE, air permeability: 15 cc /
cm 2 / sec) and 20 μLLDPE / 20 μ adhesive (Supertec PET-2, manufactured by Lintec Corporation)
The laminate of 0) was used. 30m diameter located at the center of the lid
The m-shaped adhesive is removed with a solvent and laminated to form a nonwoven fabric / adhesive (partially removed) / polyester film,
A lid was used. The PP nonwoven fabric side was placed inside, and heat sealed (180 ° C. for 4 seconds) into a PP cup to obtain a container. Strong adhesion between PP cup and PP non-woven fabric (1800
g / 15 mm), but the PP nonwoven fabric and the polyester are easily peelable (150 g / 15 mm), and the PP nonwoven fabric and the polyester partially have a non-adhesive portion (circular shape). Polyester is easily peelable. When the container having such an easy-opening structure was heated in a microwave oven (500 W) for 3 minutes B, the contents boiled and the non-woven fabric and polyester peeled off due to the pressure of the vapor that entered the non-adhesive portion, and the container was opened to the outside. No rupture of the container occurred. Furthermore, even if the container was turned over after heating, there was no leakage because the nonwoven fabric blocked the contents.
【００２６】実施例３ フランジを有するＰＰ製カップ（フランジ径：７５ｍ
ｍ、口径：６０ｍｍ、底径：５０ｍｍ、高さ：３５ｍ
ｍ、内容積：９０ｃｃ）に内容物として、水を７０ｃｃ
充填し、蓋材としてＰＰ製不織布（三井石油化学製シン
テックスＭＢ、Ｖ３０７０ＮＩＥ、通気度：３５ｃｃ／
ｃｍ２／ｓｅｃ）と５０μｐｐ／接着剤／１２μポリエ
ステル積層体を用いて、不織布とＰＰ層を部分的に熱接
着し、不織布／一部非接着／ＰＰ／接着剤／ポリエステ
ル積層体を形成し、蓋材とした。該蓋材の非接着部に位
置するＰＰ／接着剤／ポリエステル積層体に直径２ｍｍ
の貫通孔（孔の数３個）を開け、ＥＶＡ系のホットメル
ト用コーティング剤で封孔処理して易開通構造部とし
た。ＰＰ製不織布側を内側に配置し、封孔処理した部分
が開孔しないようにＰＰ製カップにヒートシール（１８
０℃４ｓｅｃ）して、図１２の容器とした。ＰＰ製カッ
プとＰＰ製不織布間は強接着（１８００ｇ／１５ｍｍ）
であり、非接着部の形状は蓋の中央直径３０ｍｍの円形
状である。この容器を電子レンジ（５００Ｗ）３分間加
熱した場合、封孔処理した部分が開孔し、容器の破裂も
なく、内容物は沸騰した。さらに加熱後容器を転倒させ
ても、不織布が内容物が漏洩することもなかった。Example 3 PP cup with flange (flange diameter: 75 m)
m, diameter: 60 mm, bottom diameter: 50 mm, height: 35 m
m, content: 90 cc), 70 cc of water as contents
Filled and used as a cover material is a PP non-woven fabric (Mitsui Petrochemical's Syntex MB, V3070NIE, air permeability: 35 cc /
cm 2 / sec) and a 50 μpp / adhesive / 12 μ polyester laminate, the nonwoven fabric and the PP layer are partially thermally bonded to form a nonwoven fabric / partially non-adhesive / PP / adhesive / polyester laminate, A lid was used. The PP / adhesive / polyester laminate located at the non-adhesive portion of the lid material has a diameter of 2 mm.
(Three holes) were formed and sealed with an EVA-based hot melt coating agent to form an easily openable structure. The PP non-woven fabric side is placed inside, and heat-sealed (18) to the PP cup so that the sealed portion is not opened.
0 ° C. for 4 seconds) to obtain the container shown in FIG. Strong adhesion between PP cup and PP non-woven fabric (1800g / 15mm)
And the shape of the non-bonded portion is a circular shape with a central diameter of the lid of 30 mm. When this container was heated for 3 minutes in a microwave oven (500 W), the sealed portion was opened, the container was not ruptured, and the contents boiled. Furthermore, even if the container was turned over after heating, the contents did not leak from the nonwoven fabric.
【００２７】実施例４ フランジを有するｐｐ製カップ（フランジ径：７５ｍ
ｍ、口径：６０ｍｍ、底径：５０ｍｍ、高さ：３５ｍ
ｍ、内容積：９０ｃｃ）に内容物として、水を７０ｃｃ
充填し、蓋材としてＰＰ製不織布（三井石油化学製シン
テックスＭＢ、Ｖ３０５０ＮＩＥ、通気度：２５ｃｃ／
ｃｍ２／ｓｅｃ）と５０μｐｐ／接着剤／１２μポリエ
ステル積層体を用い、非接着部に位置するＰＰ／接着剤
／ポリエステル積層体にＰＰ層から刃物を押しあてるこ
とにより十文字の傷を付け、易開通構造部を形成した。
不織布とＰＰ層を部分的に熱接着し、不織布／一部非接
着／ＰＰ／接着剤／ポリエステル積層体を形成し、蓋材
とした。該傷はＰＰ層を貫通し、ポリエステル層まで到
達しているが、非貫通傷である。ＰＰ製不織布側を内側
に配置し、ＰＰ製カップにヒートシール（１８０℃４ｓ
ｅｃ）し容器とした。ＰＰ製カップとＰＰ製不織布間は
強接着（１８００ｇ／１５ｍｍ）であり、非接着部の形
状は蓋の中央直径３０ｍｍの円形状であり、十文字の傷
は非接着部のほぼ中央の位置で長さ約２０ｍｍであっ
た。この容器を電子レンジ（５００Ｗ）３分間加熱した
結果、十文字の傷の交点部が開孔し、容器の破裂もな
く、内容物は沸騰した。さらに加熱後容器を転倒させて
も、不織布が内容物が漏洩することもなかった。Example 4 pp cup with flange (flange diameter: 75 m)
m, diameter: 60 mm, bottom diameter: 50 mm, height: 35 m
m, content: 90 cc), 70 cc of water as contents
Filled and used as a lid material is a PP nonwoven fabric (Mitsui Petrochemical Syntex MB, V3050NIE, air permeability: 25 cc /
cm 2 / sec) and 50 μpp / adhesive / 12 μl polyester laminate, and the PP / adhesive / polyester laminate located at the non-adhesion portion is pressed with a blade from the PP layer to make a cross-shaped wound and easy opening The structure was formed.
The nonwoven fabric and the PP layer were partially thermally bonded to form a nonwoven fabric / partially non-adhesive / PP / adhesive / polyester laminate, which was used as a lid material. The wound penetrates the PP layer and reaches the polyester layer, but is a non-penetrating wound. The nonwoven fabric side made of PP is placed inside, and heat-sealed (180 ° C 4s
ec) A container was prepared. There is strong adhesion (1800 g / 15 mm) between the cup made of PP and the nonwoven fabric made of PP, the shape of the non-adhesive portion is a circular shape with a central diameter of the lid of 30 mm, and the cross-shaped scratch is long at the approximate center of the non-adhesive portion. It was about 20 mm. As a result of heating the container for 3 minutes in a microwave oven (500 W), the intersection of the cross-shaped wound was opened, the container was not ruptured, and the contents were boiled. Furthermore, even if the container was turned over after heating, the contents did not leak from the nonwoven fabric.
【００２８】実施例５ フランジを有するＰＰ製カップ（フランジ径：７５ｍ
ｍ、口径：６０ｍｍ、底径：５０ｍｍ、高さ：３５ｍ
ｍ、内容積：９０ｃｃ）に内容物として、水を７０ｃｃ
充填し、蓋材として鋭い角部を有する粒子を付着した治
具をフイルムに押圧することにより形成した。最大孔径
が４５μの多孔質膜ＰＰフイルム（５０μ）と５０μＰ
Ｐ／接着剤／１２μポリエステル積層体を用いて、不織
布とＰＰ層を部分的に熱接着し、多孔質膜ＰＰ／一部非
接着／ＰＰ／接着剤／ポリエステル積層体を形成し、蓋
材とした。該蓋材の非接着部に位置するＰＰ／接着剤／
ポリエステル積層体に長さ１５ｍｍの貫通切り込みを入
れ、その外面にＥＶＡ系易剥離性接着剤で１２μのポリ
エステルフイルムを部分的に貼着し、封止し易開通構造
部を形成した。多孔質膜ＰＰ側を内側に配置し、封止処
理をした部分が開孔しないようにＰＰ製カップにヒート
シール（１８０℃４ｓｅｃ）して、図１３の容器とし
た。ＰＰ製カップとＰＰ製不織布間は強接着（１８００
ｇ／１５ｍｍ）であり、非接着部の形状は蓋の中央直径
３０ｍｍの円形状であった。この容器を湯煎で加熱した
結果、蓋材（ＰＰ／接着剤／ポリエステル積層体）外面
層の非接着部は膨張し、外面のＥＶＡ系接着剤を介した
１２μのポリエステルフイルムの一部分が剥離し、容器
の破裂もなく、内容物は沸騰した。さらに加熱後容器を
転倒させても、不織布が内容物が漏洩することもなかっ
た。Example 5 PP cup with flange (flange diameter: 75 m)
m, diameter: 60 mm, bottom diameter: 50 mm, height: 35 m
m, content: 90 cc), 70 cc of water as contents
The film was formed by pressing a jig, which had been filled with particles having sharp corners as a lid material, onto a film. Porous membrane PP film (50μ) with a maximum pore diameter of 45μ and 50μP
Using a P / adhesive / 12μ polyester laminate, the nonwoven fabric and the PP layer are partially thermally bonded to form a porous film PP / partially non-bonded / PP / adhesive / polyester laminate, did. PP / adhesive /
A 15 mm long cut was made in the polyester laminate, and a 12 μm polyester film was partially adhered to the outer surface of the polyester laminate with an EVA-based easily peelable adhesive, which was then sealed to form an easily opened structure. The porous membrane PP side was arranged inside, and the sealed portion was heat-sealed (180 ° C. for 4 sec) to a PP cup so as not to open a hole to obtain the container shown in FIG. Strong adhesion between PP cup and PP non-woven fabric (1800
g / 15 mm), and the shape of the non-bonded portion was a circular shape with a central diameter of the lid of 30 mm. As a result of heating this container with hot water, the non-adhesive portion of the outer layer of the lid material (PP / adhesive / polyester laminate) expands, and a part of the 12 μm polyester film via the EVA adhesive on the outer surface peels off, The contents boiled without rupture of the container. Furthermore, even if the container was turned over after heating, the contents did not leak from the nonwoven fabric.
【００２９】実施例６ ２５μのナイロン／接着剤／３０μＬＬＤＰＥ積層体に
接着剤を介し、ＰＰ製不織布（三井石油化学製シンテッ
クスＭＢ、Ｖ３０７０ＮＩＥ、通気度：２５ｃｃ／ｃｍ
２／ｓｅｃ）をフイルムの長手方向に沿って部分的に接
着していない非接着部を設け、帯状非接着部が袋の長手
方向にあり、かつ袋の表側にあり、外寸４０×８０ｍｍ
の三方シール袋を成形し、シール部に存在するＬＬＤＰ
Ｅと不織布のヒートシールの一部を易剥離性接着部とし
て易開通構造部とした。内容物として、醤油を１０ｃｃ
充填し、図８の容器とした。帯状非接着部の形状は１０
×８０ｍｍであった。この容器を電子レンジ（５００
Ｗ）で１分間加熱した結果、袋のシール部にある帯状非
接着部のＰＰ製不織布とＬＬＤＰＥ間が剥離し、袋は破
裂しなかった。また内容物が漏洩することもなかった。Example 6 A nonwoven fabric made of PP (Mitsui Petrochemical's Syntex MB, V3070NIE, air permeability: 25 cc / cm) was applied to a 25 µm nylon / adhesive / 30 µLLDPE laminate with an adhesive.
2 / sec) is provided along the longitudinal direction of the film with a non-adhered portion that is not partially adhered, the band-shaped non-adhered portion is in the longitudinal direction of the bag and on the front side of the bag, and has an outer dimension of 40 × 80 mm.
LLDP existing in the seal part
A part of the heat seal between E and the non-woven fabric was used as an easy-opening structure part as an easily peelable adhesive part. 10cc of soy sauce as contents
The container was filled to form the container shown in FIG. The shape of the band-shaped non-adhesive part is 10
× 80 mm. Put this container in a microwave (500
As a result of heating for 1 minute in W), the nonwoven fabric made of PP and the LLDPE of the band-shaped non-adhesive portion in the seal portion of the bag were peeled off, and the bag did not burst. Also, the contents did not leak.
【００３０】実施例７ フランジを有する金属／ＰＰ積層製カップ（フランジ
径：７５ｍｍ、口径：６０ｍｍ、底径：５０ｍｍ、高
さ：３５ｍｍ、内容積：９０ｃｃ）に内容物として、水
を７０ｃｃ充填し、蓋材としてＰＰ製不織布積層体（Ｖ
３０５０ＮＩＥ／ＰＳ−１０３）（三井石油化学製シン
テックスＭＢ、Ｖ３０５０ＮＩＥ、通気度：２５ｃｃ／
ｃｍ２／ｓｅｃ、三井石油化学製シンテックス、ＰＳ−
１０３、通気度：３６０ｃｃ／ｃｍ２／ｓｅｃ）と３０
μＬＬＤＰＥ／接着剤／１２μポリエステル積層体を用
いて、不織布のＶ３０５０ＮＩＥとＬＬＤＰＥを部分的
に熱接着し、不織布積層体／一部非接着／ＬＬＤＰＥ／
接着剤／ポリエステル積層体を形成し、蓋材とした。Ｐ
Ｐ製不織布側を内側に配置し、ＰＰ製カップにヒートシ
ール（１８０℃４ｓｅｃ）し容器とした。ＰＰ製カップ
とＰＰ製不織布間は強接着（１８００ｇ／１５ｍｍ）で
あるがＰＰ製不織布とＬＬＤＰＥ間は易剥離性接着（２
５０ｇ／１５ｍｍ）であり、易剥離性である。なお、Ｐ
Ｐ製不織布としてＬＬＤＰＥ間は部分的に非接着部（非
接着部の形状は蓋材の中央巾１５ｍｍの矩形状）が存在
した。この容器を湯煎で加熱した結果、容器の破裂もな
く、内容物は沸騰した。さらに加熱後容器を転倒させて
も、内容物が漏洩することもなかった。Example 7 A metal / PP laminated cup having a flange (flange diameter: 75 mm, diameter: 60 mm, bottom diameter: 50 mm, height: 35 mm, internal volume: 90 cc) was filled with 70 cc of water as a content. , PP nonwoven laminate (V
3050NIE / PS-103) (Mitsui Petrochemical's Syntex MB, V3050NIE, air permeability: 25 cc /
cm 2 / sec, Mitsui Petrochemical Syntex, PS-
103, air permeability: 360 cc / cm 2 / sec) and 30
Using a μLLDPE / adhesive / 12μ polyester laminate, the nonwoven fabric V3050NIE and LLDPE were partially thermally bonded, and the nonwoven fabric laminate / partially non-adhesive / LLDPE /
An adhesive / polyester laminate was formed and used as a lid. P
The nonwoven fabric side made of P was arranged inside, and heat sealed (180 ° C for 4 sec) into a cup made of PP to obtain a container. There is strong adhesion (1800 g / 15 mm) between the PP cup and the PP nonwoven fabric, but easily peelable adhesion (2
50 g / 15 mm), and is easily peelable. Note that P
As a nonwoven fabric made of P, a non-adhesion part (the shape of the non-adhesion part was a rectangular shape having a center width of 15 mm of the lid member) was partially present between the LLDPEs. As a result of heating the container with a water bath, the contents were boiled without the container bursting. Furthermore, even if the container was turned over after heating, the contents did not leak.
【００３１】[0031]
【発明の効果】本発明は食品包装容器を破裂することな
く、そのまま加熱が可能で、加熱後の輸送時および容器
が転倒した場合も、内容物が漏洩せず流通工程で内容物
の汚染が発生しない効果を奏する。According to the present invention, the food packaging container can be heated as it is without rupture, and the contents are not leaked during transportation after heating and even when the container is overturned, and the contents are not contaminated in the distribution process. It produces an effect that does not occur.
【図１】成形体容器を用いた実施の説明図である。FIG. 1 is an explanatory view of an embodiment using a molded body container.
【図２】易開通構造部の拡大図である。FIG. 2 is an enlarged view of an easily opened structure.
【図３】容器が加熱された場合の説明図である。FIG. 3 is an explanatory diagram when a container is heated.
【図４】開通したところを示す説明図である。FIG. 4 is an explanatory view showing a state where the vehicle is opened.
【図５】開通転倒し易の洩れないことを示す説明図であ
る。FIG. 5 is an explanatory diagram showing that it is not easy to overturn and leak.
【図６】蓋と易開通構造部の説明図である。FIG. 6 is an explanatory view of a lid and an easy-opening structure.
【図７】四方シール袋を用いた実施例の説明図である。FIG. 7 is an explanatory view of an embodiment using a four-side seal bag.
【図８】三方シール袋を用いた実施例の説明図である。FIG. 8 is an explanatory view of an embodiment using a three-side seal bag.
【図９】袋の易開通構造部の拡大図である。FIG. 9 is an enlarged view of an easy opening structure of the bag.
【図１０】易開通構造部として易穿孔部を用い容器の蓋
に配設した実施例の説明図である。FIG. 10 is an explanatory view of an embodiment in which an easy-perforating portion is used as an easy-opening structure portion and is provided on a lid of a container.
【図１１】薄膜の易穿孔部の拡大図である。FIG. 11 is an enlarged view of an easily perforated portion of a thin film.
【図１２】ホットメルト樹脂を用いた易穿孔部の拡大図
である。FIG. 12 is an enlarged view of an easily perforated portion using a hot melt resin.
【図１３】易剥離性樹脂を用いた易穿孔部の拡大図であ
る。FIG. 13 is an enlarged view of an easily perforated portion using an easily peelable resin.
１ 容器本体 ２ 蓋 ３ 外面層 ４ 内面層 ５ 非接着部 ６ 弱接着部 ７ フランジ ８ 開通部 ９ 易開通構造部 １０ 袋における非接着部 １１ 易穿孔部 １２ 孔 １３ ホットメルト型樹脂充填部 １４ 易剥離性接着層 １５ 封止フイルム DESCRIPTION OF SYMBOLS 1 Container main body 2 Lid 3 Outer surface layer 4 Inner surface layer 5 Non-adhesion part 6 Weak adhesion part 7 Flange 8 Opening part 9 Easy opening structure part 10 Non-adhesion part in bag 11 Easy perforation part 12 hole 13 Hot melt type resin filling part 14 Easy Peelable adhesive layer 15 Sealing film
Claims (21)
上である微小透孔を有する気体を透過し液体を透過しな
い内面層と、気体と液体の両者を透過しない外面層の間
に両層と接着しない非接着部を形成し、周縁の少なくと
も一部を易剥離性でかつ外部と連通しない接着部により
接着して、該非接着部の易開通構造部を配設してなる、
漏れを防止した食品包装容器。To 1. A part of the container, and an inner surface layer the water pressure is not transmitted through the liquid passes through the gas having a small hole is 1 cmH 2 O or more, between the outer surface layer which does not transmit both the gas and liquid Forming a non-adhesive portion that does not adhere to both layers, at least a part of the periphery is adhered by an adhesive portion that is easily peelable and does not communicate with the outside, and an easy-opening structure portion of the non-adhesive portion is provided.
Food packaging container that prevents leakage.
孔を有する気体を透過し液体を透過しない層である内面
層が不織布、多孔質膜、孔開け加工した膜から選んだ膜
で形成された層である、請求項１に記載された、漏れを
防止した食品包装容器。2. An inner surface layer, which is a layer that is permeable to a gas having fine pores having a water pressure resistance of 1 cmH 2 O or more and does not transmit a liquid, is formed of a film selected from a nonwoven fabric, a porous film, and a perforated film. 2. The leakage-prevented food packaging container according to claim 1, which is a coated layer.
外面層が合成樹脂フィルム、該フィルムの積層フィル
ム、これらに金属等を蒸着したフィルム、金属箔や紙と
の積層体から選んだ層である、請求項１または２に記載
された、漏れを防止した食品包装容器。3. The outer layer, which is a layer impermeable to both gas and liquid, is a layer selected from a synthetic resin film, a laminated film of the film, a film obtained by depositing a metal or the like on these films, and a laminate of metal foil and paper. The food packaging container according to claim 1 or 2, wherein the food packaging container is prevented from leaking.
周縁の少なくとも一部を易剥離性でかつ外部と連通しな
い接着部により接着し、他の周縁は強固な接着部で接着
した構造部である、請求項１ないし３のいずれか１項に
記載された、漏れを防止した食品包装容器。4. The easy-opening structure portion adheres at least a part of the periphery of the non-adhesion portion between the inner layer and the outer layer by an adhesion portion that is easily peelable and does not communicate with the outside, and the other periphery is adhered by a strong adhesion portion. The food packaging container according to any one of claims 1 to 3, wherein the food packaging container is a structural part.
通しない接着部の端部を外部に露出させて容器の密封シ
ール部に配設した、請求項１ないし４のいずれか１項に
記載された、漏れを防止した食品包装容器。5. The container according to claim 1, wherein an end portion of the adhesive portion, which is easily peelable and does not communicate with the outside, of the easy opening structure portion is exposed to the outside and is disposed in the hermetically sealed portion of the container. The food packaging container described in 1 above, wherein the food packaging container prevents leakage.
性でかつ外部と連通しない接着部が、圧力により外部と
開通する接着部である、請求項１ないし５のいずれか１
項に記載された、漏れを防止した食品包装容器。6. The adhesive part according to claim 1, wherein the easily peelable adhesive part at the periphery of the non-adhesive part between the outer layer and the inner layer and not communicating with the outside is an adhesive part that opens to the outside by pressure.
The food packaging container described in the paragraph, which prevents leakage.
性でかつ外部と連通しない接着部が、容器を加熱した時
内容物からの蒸気熱と圧力により外部と開通する接着部
である、請求項１ないし５のいずれか１項に記載され
た、漏れを防止した食品包装容器。7. An adhesive portion that is easily peelable and does not communicate with the outside at the periphery of the non-adhesive portion between the outer surface layer and the inner surface layer is an adhesive portion that opens to the outside due to steam heat and pressure from the contents when the container is heated. A food packaging container according to any one of claims 1 to 5, wherein the food packaging container prevents leakage.
孔を有する気体を透過し液体を透過しない層である内面
層と、気体と液体の両者を透過しない層である外面層と
の非接着部周縁の易剥離性でかつ外部と連通しない接着
が弱接着剤、粘着剤または感熱接着剤による接着力の弱
い接着部である、請求項１ないし７のいずれか１項に記
載された、漏れを防止した食品包装容器。8. An inner surface layer, which is a layer having micropores having a water pressure resistance of not less than 1 cmH 2 O and which is permeable to gas and does not transmit liquid, and an outer layer which is a layer which does not transmit both gas and liquid. The adhesive according to any one of claims 1 to 7, wherein the adhesive which is easily peelable and does not communicate with the outside at the periphery of the adhesive portion is a weak adhesive, an adhesive or a heat-sensitive adhesive having a weak adhesive force. Food packaging container that prevents leakage.
性でかつ外部と連通しない接着部の端部を外部に露出さ
せて袋の密封シール部に配設した、請求項１ないし８の
いずれか１項に記載された、漏れを防止した食品包装容
器。9. The container according to claim 1, wherein the container is a bag, and the end portion of the adhesive portion, which is easily peelable and does not communicate with the outside, of the easy-opening structure portion is exposed to the outside and disposed on the hermetically sealed portion of the bag. A food packaging container according to any one of claims 8 to which leakage is prevented.
成形容器であって、易開通構造部の易剥離性でかつ外部
と連通しない接着部の端部を外部に露出させて容器と蓋
の密封シール部に配設した、請求項１ないし８のいずれ
か１項に記載された、漏れを防止した食品包装容器。10. The container is a molded container such as a cup, a tray, a bottle, or the like, wherein an end portion of an adhesive portion which is easily peelable and which does not communicate with the outside is easily exposed to the outside, and the container and the lid are closed. The food packaging container according to any one of claims 1 to 8, wherein the food packaging container is provided in a hermetically sealed portion to prevent leakage.
以上である微小透孔を有する気体を透過し液体を透過し
ない内面層と、気体と液体の両者を透過しない外面層の
間に非接着部を形成しその周縁を強固な接着部により接
着し、内層と外層の間に両層と接着しない非接着部の外
面層の少なくとも一部に易穿孔部を設置した易開通構造
部を配設してなる、漏れを防止した食品包装容器。11. A part of the container has a water pressure resistance of 1 cmH 2 O.
A non-adhesive part is formed between the inner layer that does not transmit liquid and the gas that has the above-mentioned minute pores and does not transmit liquid, and the periphery is bonded by a strong adhesive part, A food packaging container in which leakage is prevented, wherein an easy-opening structure portion in which an easy-perforated portion is provided is provided between at least a part of an outer surface layer of a non-adhesive portion that does not adhere to both layers between an inner layer and an outer layer.
透孔を有する気体を透過し液体を透過しない層である内
面層が不織布、多孔質膜、孔開け加工した膜から選んだ
膜で形成された層である、請求項１１に記載された、漏
れを防止した食品包装容器。12. An inner surface layer, which is a layer that is permeable to a gas having fine pores having a water pressure resistance of 1 cmH 2 O or more and does not transmit a liquid, is formed of a film selected from a nonwoven fabric, a porous film, and a perforated film. The leak-proofed food packaging container according to claim 11, which is a coated layer.
る外面層が合成樹脂フィルム、該フィルムの積層フィル
ム、これらに金属等を蒸着したフィルム、金属箔や紙と
の積層体から選んだ層である、請求項１１または１２に
記載された、漏れを防止した食品包装容器。13. A layer selected from a synthetic resin film, a laminated film of the film, a film obtained by depositing a metal or the like on the outer surface layer, which is a layer impermeable to both gas and liquid, and a laminate of metal foil and paper. The food packaging container according to claim 11 or 12, wherein the food packaging container is prevented from leaking.
くとも一部の膜厚を薄くした薄膜部である、請求項１１
ないし１３のいずれか１項に記載された、漏れを防止し
た食品包装容器。14. The easy-perforation portion of the easy-open structure portion is a thin film portion in which at least a part of the outer layer has a reduced thickness.
14. The food packaging container according to any one of claims 13 to 13, wherein the food packaging container prevents leakage.
くとも一部をホットメルト型の合成樹脂で形成した低温
溶融部である、請求項１１ないし１３のいずれか１項に
記載された漏れを防止した食品包装容器。15. The leak according to claim 11, wherein the easily perforated portion of the easily opened structure portion is a low-temperature melting portion in which at least a part of the outer layer is formed of a hot-melt type synthetic resin. Food packaging containers that have been prevented.
くとも一部を切開し、易剥離性接着材により他のフイル
ムを貼着して封止した易剥離性封止部である、請求項１
１ないし１３のいずれか１項に記載された漏れを防止し
た食品包装容器。16. The easy-peelable sealing portion in which the easy-piercing portion of the easy-opening structure portion cuts out at least a part of the outer layer, and adheres and seals another film with an easy-peelable adhesive. Item 1
14. A food packaging container according to any one of 1 to 13, wherein leakage is prevented.
くとも一部を１軸延伸したフイルムで形成した易引裂部
である、請求項１１ないし１３のいずれか１項に記載さ
れた漏れを防止した食品包装容器。17. The leakage device according to claim 11, wherein the easily perforated portion of the easily opened structure portion is an easily torn portion formed by a film in which at least a part of the outer layer is uniaxially stretched. Prevented food packaging containers.
易開通構造部を胴部に配設してなる、請求項１１に記載
された漏れを防止した食品包装容器。18. The food packaging container for preventing leakage according to claim 11, wherein the container is a bag, and the easy-opening structure portion provided with the easy-piercing portion is provided on the body portion.
成形容器であって、易穿孔部を配設した易開通構造部を
蓋の天板部に配設した、請求項１１に記載された漏れを
防止した食品包装容器。19. The container according to claim 11, wherein the container is a molded container such as a cup, a tray, a bottle, or the like, and the easy-opening structure portion provided with the easy-piercing portion is provided on the top plate portion of the lid. Food packaging container that prevents leakage.
成形容器であって、易穿孔部を配設した易開通構造部を
胴部の上部に配設した、請求項１１に記載された漏れを
防止した食品包装容器。20. The leak according to claim 11, wherein the container is a molded container such as a cup, a tray, a bottle, or the like, and an easy-opening structure portion provided with an easy-piercing portion is provided at an upper portion of the body. Food packaging containers that have been prevented.
ク、紙及びこれらの積層体又は複合体で形成された、請
求項１ないし２０のいずれか１項に記載された、漏れを
防止した食品包装容器。21. The food packaging container according to claim 1, wherein the container body is formed of metal, glass, plastic, paper, or a laminate or composite thereof. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04612598A JP4144062B2 (en) | 1998-01-23 | 1998-01-23 | Food packaging container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04612598A JP4144062B2 (en) | 1998-01-23 | 1998-01-23 | Food packaging container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11208736A true JPH11208736A (en) | 1999-08-03 |
| JP4144062B2 JP4144062B2 (en) | 2008-09-03 |
Family
ID=12738274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04612598A Expired - Fee Related JP4144062B2 (en) | 1998-01-23 | 1998-01-23 | Food packaging container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4144062B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009292490A (en) * | 2008-06-03 | 2009-12-17 | Keiichi Sato | Sheet lid for instant food container |
| KR100989502B1 (en) | 2002-04-11 | 2010-10-22 | 핀타스 피티이 엘티디 | Packing container |
| JP4817583B2 (en) * | 2000-04-26 | 2011-11-16 | 宏道 稲垣 | Packaging materials and products |
| WO2015002058A1 (en) * | 2013-07-03 | 2015-01-08 | 株式会社彫刻プラスト | Packaging material, packaging bag, packaging container and package |
| JP2020070056A (en) * | 2018-10-31 | 2020-05-07 | 凸版印刷株式会社 | Packaging bag for microwave heating |
-
1998
- 1998-01-23 JP JP04612598A patent/JP4144062B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4817583B2 (en) * | 2000-04-26 | 2011-11-16 | 宏道 稲垣 | Packaging materials and products |
| KR100989502B1 (en) | 2002-04-11 | 2010-10-22 | 핀타스 피티이 엘티디 | Packing container |
| JP2009292490A (en) * | 2008-06-03 | 2009-12-17 | Keiichi Sato | Sheet lid for instant food container |
| WO2015002058A1 (en) * | 2013-07-03 | 2015-01-08 | 株式会社彫刻プラスト | Packaging material, packaging bag, packaging container and package |
| JP5733809B1 (en) * | 2013-07-03 | 2015-06-10 | 株式会社彫刻プラスト | Packaging materials, packaging bags, packaging containers and packages |
| CN105377715A (en) * | 2013-07-03 | 2016-03-02 | 雕刻普拉斯特株式会社 | Packaging material, packaging bag, packaging container and package |
| US10399762B2 (en) | 2013-07-03 | 2019-09-03 | Chokoku Plast Corporation | Packaging material, packaging bag, packaging container, and packaged body |
| JP2020070056A (en) * | 2018-10-31 | 2020-05-07 | 凸版印刷株式会社 | Packaging bag for microwave heating |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4144062B2 (en) | 2008-09-03 |
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