JPH0885580A - Packaging container and laminate film therefor - Google Patents
Packaging container and laminate film thereforInfo
- Publication number
- JPH0885580A JPH0885580A JP6219903A JP21990394A JPH0885580A JP H0885580 A JPH0885580 A JP H0885580A JP 6219903 A JP6219903 A JP 6219903A JP 21990394 A JP21990394 A JP 21990394A JP H0885580 A JPH0885580 A JP H0885580A
- Authority
- JP
- Japan
- Prior art keywords
- container
- synthetic resin
- adhesive
- heat
- 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.)
- Granted
Links
Landscapes
- Package Specialized In Special Use (AREA)
- Packages (AREA)
- Closures For Containers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子レンジ等で加熱処
理可能な被加熱物を密封状態で包装する場合に用いられ
る包装容器で、詳しくは、複数の合成樹脂層のうち、少
なくとも隣接する一組の合成樹脂層が互いに熱融着不能
な合成樹脂材料から構成されているラミネートフィルム
を、耐熱性合成樹脂製の容器本体の開口周縁部分に気密
状態で、かつ、一定以上の力で剥離可能に熱融着してあ
る包装容器及びそれに用いるラミネートフィルムに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container used for hermetically packaging an object to be heat-treated in a microwave oven or the like. A set of synthetic resin layers made of synthetic resin material that cannot be heat fused to each other is peeled off with a force above a certain level in an airtight state around the opening peripheral edge of the container body made of heat-resistant synthetic resin. The present invention relates to a packaging container which is heat-sealed as possible and a laminated film used therefor.
【０００２】[0002]
【従来の技術】この種の包装容器では、例えば、食品を
容器内に密封したままで、電子レンジで加熱調理する
と、食品から発生する蒸気で容器内の内気圧が上昇し、
蓋体となるラミネートフィルム又は容器本体が破裂し
て、電子レンジの調理空間内に食品が飛散してしまう問
題がある。そして、一般には、この様な破裂を防止する
ため、電子レンジで加熱調理する前に、容器本体と蓋体
との熱融着部分の一部又は全部を剥離するか、或いは、
ラミネートフィルムに孔を開けて、容器内と容器外とを
通気状態にして、電子レンジでの加熱調理時に食品から
発生する蒸気を容器外に放出できるようにすることが奨
励されているが、これによる場合は、加熱調理に煩わし
さを伴うだけでなく、殊に、蒸気放出用開口を施すこと
を忘れた場合、食品を容器内に密封したままで電子レン
ジで加熱調理を行うことになり、上述のように蓋体又は
容器本体の破裂を招いてしまう問題がある。そこで、前
記ラミネートフィルムと容器本体の開口周縁部分との熱
融着部分の一部に、容器内部空間と容器外とを連通する
通気路を形成し、更に、通常での容器内部空間の気密性
を確保するために、前記通気路を、容器内の内気圧がラ
ミネートフィルム又は容器本体の破裂を誘発する限界に
高まるまでに、当該容器内の内気圧で容器本体の開口周
縁部分からラミネートフィルムが剥離するように、前記
熱融着部分より弱い接合力を保持する状態で熱融着又は
粘着して、容器内の内気圧が一定以上に達すると、前記
通気路が剥離開口して当該容器内の気体を容器外に放出
できるように構成することが考えられる。2. Description of the Related Art In a packaging container of this type, for example, when food is kept sealed in the container and cooked in a microwave oven, steam generated from the food increases the internal pressure of the container,
There is a problem that the laminated film or the container body that becomes the lid bursts and the food is scattered in the cooking space of the microwave oven. Then, in general, in order to prevent such a burst, before heating in a microwave oven, a part or all of the heat-sealed portion between the container body and the lid is peeled off, or
It is recommended to make a hole in the laminate film so that the inside and the outside of the container are ventilated so that steam generated from food during cooking in a microwave oven can be released to the outside of the container. In case of, not only is it troublesome to cook, but especially if you forget to provide a steam discharge opening, you will cook in the microwave while keeping the food sealed in the container, As described above, there is a problem that the lid or the container body is ruptured. Therefore, in a part of the heat-sealed portion of the laminate film and the peripheral edge portion of the opening of the container body, a ventilation path that connects the container internal space and the container outside is formed, and the airtightness of the normal container internal space is further formed. In order to secure the above, the ventilation passage, until the internal pressure in the container rises to the limit of inducing the rupture of the laminate film or the container body, the laminate film from the opening peripheral portion of the container body at the internal pressure in the container. When the internal pressure in the container reaches a certain level or more by heat-sealing or adhering in a state of holding the bonding force weaker than that of the heat-sealing portion so that the air-flow path is peeled open and the inside of the container is peeled off. It is conceivable that the above gas can be discharged to the outside of the container.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述の
ラミネートフィルムと容器本体の開口周縁部分との間に
形成される通気路が、容器内の内気圧によって剥離開口
される構成を採用する場合、この通気路形成箇所のラミ
ネートフィルムと容器本体の開口周縁部分との接合力
は、他の熱融着部分の接合力よりも弱いため、輸送時や
陳列時等の流通過程で、通気路形成箇所のラミネートフ
ィルムに他部材との引っ掛かり等によって外力が作用す
ると、当該通気路が剥離開口してしまう可能性があり、
その結果、この剥離開口した通気路を通して容器外の雑
菌等が容器内に侵入してしまう問題がある。However, in the case of adopting a structure in which the ventilation passage formed between the above-mentioned laminated film and the peripheral edge portion of the opening of the container body is peeled and opened by the internal pressure in the container, Since the bonding force between the laminated film at the air passage formation portion and the opening peripheral edge portion of the container body is weaker than the bonding force at the other heat-sealed portions, the air passage formation portion in the distribution process during transportation or display may be changed. When an external force acts on the laminate film due to being caught with another member, the ventilation path may be peeled and opened,
As a result, there is a problem that germs and the like outside the container enter the container through the air passage which is opened in the peeling.
【０００４】本発明は、上述の実情に鑑みてなされたも
のであって、その目的は、蓋体となるラミネートフィル
ムの構造を工夫することにより、電子レンジ等で加熱処
理を行う際、予め、容器内部空間を容器外に開口させる
作業を必要とせず、しかも、通常は高い気密性を確保し
ながらも、加熱処理時に容器内の内気圧の上昇に伴う蓋
体又は容器本体の破裂を防止することができ、その上、
蒸気放出用通気路が流通過程で万一開口しても、雑菌等
が容器内に侵入することを抑制することのできる包装容
器を提供することができる点にある。The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to devise a structure of a laminate film to be a lid so that heat treatment is performed in advance in a microwave oven or the like. No need to open the inner space of the container to the outside of the container, and normally, while maintaining high airtightness, prevent the lid or container body from bursting due to an increase in the internal pressure during the heat treatment. And on top of that,
It is possible to provide a packaging container that can prevent various bacteria and the like from entering the container even if the vapor discharge air passage opens in the distribution process.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
の本発明の第１の特徴構成は、接合された複数の合成樹
脂層のうち、少なくとも隣接する一組の合成樹脂層が互
いに熱融着不能な合成樹脂材料から構成されているラミ
ネートフィルムを、耐熱性合成樹脂製の容器本体の開口
周縁部分に気密状態で、かつ、一定以上の力で剥離可能
に熱融着してある包装容器であって、前記ラミネートフ
ィルムの合成樹脂層のうち、熱融着不能な合成樹脂層間
の一部に、前記容器本体の開口周縁部分との熱融着箇所
を横断する状態で非接着部分を形成し、この非接着部分
に対応する容器内部空間側の合成樹脂層には、前記非接
着部分と前記容器内部空間とを連通接続する連通口を形
成して、前記非接着部分と前記連通口とで容器内部空間
から容器外に通じる通気路を構成するとともに、前記非
接着部分を形成する合成樹脂層部分間の一部を、容器内
部空間の内気圧が一定以上となった時にその内気圧で剥
離開口可能な粘着層をもって気密状態に閉止してある点
にある。The first characteristic constitution of the present invention for attaining the above object is that at least one set of adjacent synthetic resin layers among a plurality of joined synthetic resin layers are thermally fused to each other. A packaging container in which a laminated film composed of a non-stickable synthetic resin material is heat-sealed to the peripheral edge of the opening of the container body made of heat-resistant synthetic resin in an airtight state and capable of being peeled off with a certain force or more. In the synthetic resin layer of the laminate film, a non-adhesive portion is formed in a part between the synthetic resin layers that cannot be heat-sealed so as to traverse the heat-sealed portion with the opening peripheral portion of the container body. Then, in the synthetic resin layer on the container internal space side corresponding to the non-adhesive portion, a communication port that connects and connects the non-adhesive portion and the container internal space is formed, and the non-adhesive portion and the communication port are formed. To communicate from the inner space of the container to the outside of the container. An airtight state with a pressure-sensitive adhesive layer that constitutes an air passage and partially peels off between the synthetic resin layer portions forming the non-adhesive portion at the internal pressure of the internal space of the container when the internal pressure exceeds a certain level. The point is that it is closed.
【０００６】請求項２に記載したように、前記連通口
が、非接着部分に対応する容器内部空間側の合成樹脂層
に形成された切り目であってもよい。As described in claim 2, the communication port may be a cut formed in the synthetic resin layer on the inner space side of the container corresponding to the non-adhesive portion.
【０００７】請求項３に記載したように、前記粘着層が
耐熱性のインクからなり、当該インクが、前記非接着部
分を形成する合成樹脂層部分間のうち、一方の合成樹脂
層の前記非接着部分に対応する面に印刷されていてもよ
い。According to a third aspect of the present invention, the pressure-sensitive adhesive layer is made of heat-resistant ink, and the ink contains the non-adhesive portion of the synthetic resin layer portion, and the non-adhesive portion of the non-adhesive portion of the synthetic resin layer It may be printed on the surface corresponding to the adhesive portion.
【０００８】更に、請求項４に記載したように、前記ラ
ミネートフィルムとしては、前記非接着部分が、複数層
に接合される合成樹脂製の基材フィルムのうち、互いに
熱融着不能な二枚の基材フィルムを接合する接着剤の非
塗布部分をもって構成されているとともに、前記インク
が、互いに熱融着不能な一組の合成樹脂層のうち、一方
の合成樹脂層の前記非接着部分に対応する面の所定位置
に印刷されているものでもよい。Further, as described in claim 4, as the laminate film, two non-adhesive portions of the base film made of synthetic resin in which the non-adhesive portions are joined to each other in a plurality of layers cannot be heat-sealed to each other. The non-adhesive portion of the one of the synthetic resin layer, which is composed of a non-adhesive portion of the adhesive that joins the base film of It may be printed at a predetermined position on the corresponding surface.
【０００９】[0009]
【作用】請求項１記載の構成による場合は、加熱処理時
に容器内の被加熱物から蒸気が発生して容器内の内気圧
が一定以上に上昇すると、当該容器内の高圧の気体が、
連通口と非接着部分とから構成される通気路を通って粘
着層をもって閉止してある非接着部分の一部に流動し、
この気体の圧力で、当該粘着層で閉止された非接着部分
を、その粘着層の粘着力に抗して押し広げながら剥離し
て容器内の気体が容器外に放出される。しかも、輸送時
や陳列時等の流通過程で、前記通気路のうち、粘着層を
もって閉止してある非接着部分の一部に相当するラミネ
ートフィルム部分に、他部材との引っ掛かり等によって
外力が作用して、当該粘着層をもって閉止してある非接
着部分の一部が万一剥離して開口したとしても、当該粘
着層をもって閉止してある非接着部分の一部自身が一枚
のラミネートフィルムを構成する非常に薄い一組の合成
樹脂層間の非接着部分で構成されているために互いに密
着し易く、しかも、非接着部分を形成する合成樹脂層部
分のうち、容器本体の開口周縁部分と容器内部空間との
境界に相当する部分は、容器本体の開口周縁部分とラミ
ネートフィルムとの熱融着、及び、非接着部分の通気路
幅方向の両側に連続する接着部分の存在によって密着姿
勢に保持されるため、容器の内気圧が外気圧と同一にあ
る条件下においては、通気路は高い気密状態に維持され
る。According to the structure of claim 1, when steam is generated from the object to be heated in the container during the heat treatment and the internal pressure in the container rises above a certain level, the high-pressure gas in the container becomes
Flows to a part of the non-adhesive part that is closed with an adhesive layer through a ventilation path composed of a communication port and a non-adhesive part,
The pressure of the gas causes the non-adhesive portion closed by the adhesive layer to be peeled off while pushing and spreading against the adhesive force of the adhesive layer, and the gas in the container is released to the outside of the container. In addition, in the distribution process such as transportation or display, external force acts on the laminate film portion of the ventilation passage, which corresponds to a part of the non-adhesive portion closed by the adhesive layer, by being caught by another member. Then, even if a part of the non-adhesive part closed with the adhesive layer is peeled off and opened, a part of the non-adhesive part closed with the adhesive layer itself forms a single laminated film. Since it is composed of a very thin set of non-adhesive portions of the synthetic resin layer, it is easy for them to adhere to each other, and in the synthetic resin layer portion forming the non-adhesive portion, the peripheral portion of the opening of the container body and the container The portion corresponding to the boundary with the internal space is in a close contact posture due to heat fusion between the opening peripheral edge portion of the container body and the laminate film, and the presence of continuous adhesive portions on both sides in the air passage width direction of the non-adhesive portion. To be held in the condition where the inner pressure of the container is the same as the outside air pressure, the vent path is maintained at a high airtight state.
【００１０】請求項２記載の構成による場合は、ラミネ
ートフィルムの連続製造工程の中で連通口を容易に加工
することができる。According to the second aspect of the invention, the communication port can be easily processed in the continuous manufacturing process of the laminated film.
【００１１】請求項３記載の構成による場合は、ラミネ
ートフィルムの連続製造工程の中又は連続製造工程以前
に、耐熱性のインクを一方の合成樹脂層の非接着部分の
一部に印刷するだけで容易に粘着層を構成することがで
き、しかも、粘着層が耐熱性であるため、ラミネートフ
ィルムを容器本体の開口周縁部分に熱融着する際の加熱
で粘着層が劣化不良を発生し難い。According to the structure of claim 3, heat-resistant ink is simply printed on a part of the non-adhesive portion of one of the synthetic resin layers during or before the continuous manufacturing process of the laminated film. The pressure-sensitive adhesive layer can be easily formed, and since the pressure-sensitive adhesive layer is heat resistant, deterioration of the pressure-sensitive adhesive layer is less likely to occur due to heating when the laminate film is heat-sealed to the peripheral edge portion of the opening of the container body.
【００１２】請求項４記載の構成による場合は、ラミネ
ートフィルムの連続製造工程時に、接着剤の非塗布位置
を考慮するだけで非接着部分を形成できるので、既存の
製造設備の簡単な改造で実施することができる。In the case of the structure according to claim 4, the non-adhesive portion can be formed only by considering the non-application position of the adhesive during the continuous manufacturing process of the laminated film. Therefore, the existing production equipment can be simply modified. can do.
【００１３】[0013]
【発明の効果】請求項１記載の包装容器は、電子レンジ
等で加熱処理を行う際、予め、容器内部空間を容器外に
開口させる作業が不要で、しかも、通常は高い気密性を
確保しながらも、加熱処理時に容器内の内気圧が一定以
上に上昇すると、この内気圧で通気路が開口されて、容
器内の気体が当該通気路を通って容器外に放出されるの
で、ラミネートフィルム又は容器本体の破裂を防止する
ことができる。しかも、通気路が流通過程で万一開口し
ても、通気路が高い気密状態に維持されるので、雑菌等
が容器内に侵入し難い。EFFECTS OF THE INVENTION The packaging container according to claim 1 does not require a work for opening the inner space of the container to the outside of the container in advance when heat-treating it in a microwave oven or the like, and normally ensures high airtightness. However, when the internal pressure in the container rises above a certain level during the heat treatment, the ventilation path is opened at this internal pressure, and the gas in the container is discharged to the outside of the container through the ventilation path. Alternatively, it is possible to prevent the container body from bursting. Moreover, even if the air passage is opened during the distribution process, the air passage is maintained in a highly airtight state, so that it is difficult for bacteria and the like to enter the container.
【００１４】請求項２及び請求項３記載の包装容器は、
ラミネートフィルムの既存の製造設備の簡単な改造で実
施することができるので、製造コストの上昇を抑制する
ことができる。しかも、請求項３記載の包装容器は、粘
着層で閉止された非接着部分の合成樹脂層部分間の一部
の気密性を確実に確保できる。The packaging container according to claim 2 and claim 3,
Since it can be carried out by simply modifying the existing manufacturing equipment for the laminated film, it is possible to suppress an increase in manufacturing cost. Moreover, in the packaging container according to the third aspect, the airtightness of a part between the synthetic resin layer portions of the non-adhesive portion closed by the adhesive layer can be reliably ensured.
【００１５】請求項４記載の包装用ラミネートフィルム
は、製造コストの上昇を抑制することができる。The laminated film for packaging according to claim 4 can suppress an increase in manufacturing cost.
【００１６】[0016]
〔第１実施例〕図８に示す本発明の包装容器は、被加熱
物である食品Ｅを密封包装した状態のままで電子レンジ
等での加熱調理に対応できるものであって、図７に示す
ように、２層に重ね合わされた合成樹脂層１Ａ，１Ｂを
互いに熱融着不能なナイロンとポリエチレンから構成し
てあるラミネートフィルム１を所定の寸法に裁断加工
し、耐熱性と保形性とを備えたポリエチレン製の容器本
体Ａの上部の開口周縁部分ａに気密状態で、かつ、一定
以上の力で剥離可能に熱融着して構成されており、ま
た、前記ラミネートフィルム１をもって蓋体Ｂが形成さ
れている。[First Embodiment] The packaging container of the present invention shown in FIG. 8 can be heated and cooked in a microwave oven or the like in a state in which the food E to be heated is sealed and packaged. As shown, the two laminated synthetic resin layers 1A and 1B are cut into a predetermined size by laminating a laminate film 1 made of nylon and polyethylene that cannot be heat-sealed to each other, to obtain heat resistance and shape retention. A container body A made of polyethylene provided with an opening peripheral edge portion a in an airtight state and heat-sealable so as to be peelable with a certain force or more. B is formed.
【００１７】前記ラミネートフィルム１は、具体的に、
図１〜図６に示すように、ドライラミネート法によって
積層されたナイロン製の基材フィルム（一方の合成樹脂
層となる）１Ａとポリエチレン製の基材フィルム（他方
の合成樹脂層となる）１Ｂとを、接着剤５が塗布されて
いない部分を帯状に形成した状態で、当該接着剤５で接
合して構成され、この接着剤５が塗布されていない非接
着部分ｎに対応する容器内部空間Ｓ側のポリエチレン製
の基材フィルム１Ｂに、前記非接着部分ｎと容器内部空
間Ｓとを連通接続する一本の筋状の切り目（連通口の一
例である）３を、前記非接着部分ｎの長手方向に沿う姿
勢で形成してある。次に、前記食品Ｅの密封包装の包装
方法を説明する。前記蓋体Ｂは、ラミネートフィルム１
を非接着部分ｎの幅方向両側脇に接着部分が存在する状
態で所定の寸法に裁断加工して形成され、容器本体Ａ内
に食品Ｅを収納した後、蓋体Ｂのポリエチレン製の基材
フィルム１Ｂ側の周縁部分ｂを、前記非接着部分ｎが容
器本体Ａの開口周縁部分ａの一部を横断する状態で、当
該開口周縁部分ａに重ね合わせ、更に、蓋体Ｂのナイロ
ン製の基材フィルム１Ａ側の周縁部分ｂの表面側から、
当該周縁部分ｂの全周に亘ってシールバー（図示せず）
等を用いて加熱加圧処理を施すことにより、容器本体Ａ
の開口周縁部分ａに蓋体Ｂの容器内部空間Ｓ側の基材フ
ィルム１Ｂが熱融着（図中のＰで示す部分）されて、容
器本体Ａに蓋体Ｂが取り付けられる。この時、容器本体
Ａの開口周縁部分ａに重合位置する基材フィルム１Ｂの
切り目３は、この開口周縁部分ａに基材フィルム１Ｂが
熱融着されることにより当該開口周縁部分ａを介して閉
じられるが、両基材フィルム１Ａ，１Ｂ間の非接着部分
ｎは熱融着不能であるため、蓋体Ｂの容器本体Ａに対す
る加熱加圧処理によって熱融着されて閉止されることは
ないので、非接着部分ｎと容器内部空間Ｓ側の切り目３
とで、容器内部空間Ｓから容器外に通じる通気路４を構
成するとができる。尚、前記非接着部分ｎのうち、容器
本体Ａの開口周縁部分ａとの熱融着箇所Ｐを横断する箇
所に相当する両基材フイルム１Ａ，１Ｂ間の一部が、前
記通気路４の容器外に対する開口部分Ｃに構成される。The laminate film 1 is specifically
As shown in FIGS. 1 to 6, a nylon base film (to be one synthetic resin layer) 1A and a polyethylene base film (to be the other synthetic resin layer) 1B laminated by a dry laminating method. And the adhesive 5 are joined together with the adhesive 5 in a state where the portion where the adhesive 5 is not applied is formed into a strip shape, and the internal space of the container corresponding to the non-adhesive portion n where the adhesive 5 is not applied. On the S-side base film 1B made of polyethylene, one streak cut (which is an example of a communication port) 3 for connecting and connecting the non-adhesive part n and the container internal space S is provided. Is formed in a posture along the longitudinal direction. Next, a method of packaging the food E in a hermetically sealed manner will be described. The lid B is a laminated film 1
Is formed by cutting the non-adhesive part n into a predetermined size in the presence of the adhesive parts on both sides in the width direction, and after the food E is stored in the container body A, the polyethylene base material of the lid B is formed. The peripheral edge portion b on the side of the film 1B is overlapped on the opening peripheral edge portion a in a state where the non-adhesive portion n crosses a part of the opening peripheral edge portion a of the container body A, and the lid B is made of nylon. From the surface side of the peripheral edge portion b on the base film 1A side,
A seal bar (not shown) over the entire circumference of the peripheral portion b.
By applying heat and pressure treatment using
The base material film 1B on the container inner space S side of the lid body B is heat-sealed (the portion indicated by P in the figure) to the opening peripheral edge portion a, and the lid body B is attached to the container body A. At this time, the cut 3 of the base material film 1B overlappingly positioned on the opening peripheral edge portion a of the container body A passes through the opening peripheral edge portion a by heat-sealing the base film 1B to the opening peripheral edge portion a. Although it is closed, the non-adhesive part n between the two base material films 1A and 1B cannot be heat-sealed, so that the container body A of the lid B is not heat-sealed and closed. Therefore, the non-adhesive part n and the notch 3 on the container internal space S side
With the above, it is possible to configure the ventilation path 4 that leads from the container internal space S to the outside of the container. It should be noted that, in the non-adhesive portion n, a part between the base material films 1A and 1B corresponding to a portion that crosses the heat-sealing portion P with the opening peripheral portion a of the container body A is a part of the ventilation passage 4. It is configured in an opening portion C to the outside of the container.
【００１８】更に、前記蓋体Ｂの容器外側に位置する基
材フィルム１Ａの非接着部分ｎに対応する面のうち、開
口部分Ｃに相当する箇所には、粘着層の一例である耐熱
性のインク６（例えば、商品名、ダイジュレーサー Ｖ
Ｎｏ２０（大日本インキ化学工業株式会社製））が予
め印刷してあり、蓋体Ｂを容器本体Ａの開口周縁部分ａ
に熱融着した際、このインク６の粘着力と加熱加圧処理
との共働で、開口部分Ｃの容器外側に位置する基材フィ
ルム１Ａと容器内部空間Ｓ側の基材フィルム１Ｂとが密
着して、当該非接着部分ｎの開口部分Ｃが、低温又は常
温での輸送時や陳列時等の流通過程では、気密状態に閉
止されるようになっている。前記開口部分Ｃは、容器内
部空間Ｓの内気圧を高めたとき、この内気圧で容器本体
Ａの開口周縁部分ａと蓋体Ｂとの熱融着部分が瞬間的に
破裂剥離したり、或いは、蓋体Ｂ自体又は容器本体Ａ自
体が破裂するまでの破裂限界内気圧よりも弱い設定内気
圧で剥離開口可能な粘着力で密着しており、容器内部空
間Ｓの内気圧が上昇して、当該内気圧が設定内気圧以上
になると、この開口部分Ｃの両基材フィルム１Ａ，１Ｂ
間に容器内部空間Ｓの気体が流入し、当該両基材フィル
ム１Ａ，１Ｂ間を押し広げながら剥離し、最終的に開口
してしまうように構成されている。Further, of the surface of the base film 1A located outside the container of the lid B corresponding to the non-adhesive part n, a portion corresponding to the opening C is made of a heat-resistant material which is an example of an adhesive layer. Ink 6 (for example, trade name, Daiju Racer V
No. 20 (manufactured by Dainippon Ink and Chemicals, Inc.) is preliminarily printed, and the lid B is provided around the opening peripheral portion a of the container body A.
When heat-sealed, the base film 1A located outside the container at the opening C and the base film 1B on the container internal space S side work in cooperation with the adhesive force of the ink 6 and the heat and pressure treatment. In close contact, the opening portion C of the non-bonded portion n is closed in an airtight state during a distribution process such as transportation at low temperature or room temperature and display. When the internal pressure of the internal space S of the container is raised, the opening C causes the heat-sealed portion between the opening peripheral edge portion a of the container main body A and the lid B to burst and peel off instantaneously, or , The lid B itself or the container body A itself is adhered with an adhesive force capable of peeling and opening at a set internal pressure weaker than the burst limit internal pressure until the container ruptures, and the internal pressure of the container internal space S rises, When the internal pressure becomes equal to or higher than the set internal pressure, both base material films 1A and 1B in the opening C
The gas in the container internal space S flows in between, and is peeled off while spreading between the base material films 1A and 1B, and finally opened.
【００１９】従って、食品Ｅが密封された本発明の包装
容器を、そのまま電子レンジの調理空間に収納して加熱
調理した際、食品から水蒸気（気体の一例）が大量に発
生して、容器内部空間Ｓの内気圧が前記設定内気圧以上
にまで上昇すると、通気路４を通って流動してきた容器
内部空間Ｓの水蒸気及び空気又は不活性ガス等の気体が
開口部分Ｃの両基材フィルム１Ａ，１Ｂ間に流入し、当
該開口部分Ｃの密着部分を剥離して最終的にこの開口部
分Ｃを開口してしまうから、容器内部空間Ｓの気体が通
気路４と開口された開口部分Ｃを通って容器外に放出さ
れるので、容器内部空間Ｓの内気圧はそれ以上に上昇す
ることはない。それ故に、容器本体Ａの開口周縁部分ａ
と蓋体Ｂとの熱融着部分の瞬間的な剥離破裂や、或い
は、蓋体Ｂ自体又は容器本体Ａ自体が破裂によって、そ
の衝撃力で容器内の食品Ｅが粉々に粉砕されて電子レン
ジの調理空間に飛散してしまうことがない。Therefore, when the packaging container of the present invention in which the food E is sealed is stored in the cooking space of the microwave oven as it is and cooked, a large amount of steam (an example of gas) is generated from the food, and the inside of the container is heated. When the internal pressure of the space S rises above the set internal pressure, water vapor and air or a gas such as an inert gas in the container internal space S that has flowed through the ventilation passages 4 has both base film 1A at the opening C. , 1B, the contact portion of the opening portion C is peeled off and the opening portion C is finally opened. Therefore, the gas in the container internal space S passes through the ventilation passage 4 and the opening portion C opened. Since it is discharged to the outside of the container through it, the internal pressure of the internal space S of the container does not rise any further. Therefore, the opening peripheral portion a of the container body A
The food E in the container is shattered into pieces by the impact force due to the momentary peeling burst of the heat-sealed portion between the lid B and the lid B, or the burst of the lid B itself or the container body A itself. It doesn't scatter into the cooking space.
【００２０】また、輸送時や陳列時等の流通過程におい
て、前記開口部分Ｃのラミネートフィルム１部分に、他
部材との引っ掛かり等によって外力が作用して、この開
口部分Ｃが万一剥離して開口したとしても、当該開口部
分Ｃ自身が一枚のラミネートフィルム１を構成する非常
に薄い一組の基材フィルム１Ａ，１Ｂ間の非接着部分ｎ
で構成されているために互いに密着し易く、しかも、非
接着部分ｎを形成する両基材フィルム１Ａ，１Ｂのう
ち、容器本体Ａの開口周縁部分ａと容器内部空間Ｓとの
境界に相当する部分は、容器本体Ａの開口周縁部分ａと
ラミネートフィルム１との熱融着、及び、非接着部分ｎ
の通気路４幅方向の両側に連続する接着部分の存在によ
って密着姿勢に保持されるため、容器Ａの内気圧が外気
圧と同一にある条件下においては、通気路４は高い気密
状態に維持される。Further, in the course of distribution such as during transportation or display, an external force acts on the laminated film 1 portion of the opening portion C due to being caught by another member, and the opening portion C may be peeled off. Even if the opening is made, the opening C itself constitutes a single laminated film 1 and a very thin set of non-adhesive parts n between the base films 1A and 1B.
Since it is configured to be in close contact with each other, and corresponds to the boundary between the opening peripheral edge portion a of the container main body A and the container internal space S in both the base material films 1A and 1B forming the non-bonded portion n. The part is the heat fusion between the opening peripheral part a of the container body A and the laminate film 1, and the non-adhesive part n.
The air passage 4 is maintained in a close-fitting posture due to the presence of continuous adhesive portions on both sides in the width direction of the air passage 4, so that the air passage 4 is maintained in a high airtight state under the condition that the internal pressure of the container A is the same as the external pressure. To be done.
【００２１】尚、当該実施例では、切れ目３の切断部分
が自重で下方に向かって撓み変形して、当該切れ目３が
開口し、容器内部空間Ｓ内と非接着部分ｎとが連通する
ように構成されているが、輸送時や陳列時等の流通過程
において、切れ目３の切断部分が下方に向かって撓み変
形せず、当該切れ目３の切断端面同士が接当する状態で
閉止されている場合でも、加熱調理時には、切れ目３の
切断端面近傍が、ポリエチレン製基材フィルム１Ａの特
性により、容器内の湿度や温度の上昇で不規則に波打つ
状態で撓み変形するため、この切れ目３の切断部分が確
実に開口して、容器内部空間Ｓ内と非接着部分ｎとが連
通し、容器内部空間Ｓ内の気体を開口部分Ｃに確実に流
動させることができる。In this embodiment, the cut portion of the cut 3 is flexed and deformed downward by its own weight so that the cut 3 is opened so that the interior space S of the container and the non-bonded portion n communicate with each other. Although configured, when the cut portion of the cut 3 is not bent and deformed downward in the distribution process such as transportation or display, and the cut end surfaces of the cut 3 are closed in a state of abutting each other. However, during heating and cooking, the vicinity of the cut end face of the cut 3 is flexibly deformed in an irregular wavy state due to the increase in humidity and temperature in the container due to the characteristics of the polyethylene base film 1A. Is surely opened, the inside of the container S is communicated with the non-adhesive part n, and the gas in the inside S of the container can be surely flowed to the opening C.
【００２２】次に、前記ラミネートフィルム１をドライ
ラミネート法にて製造する場合の一例を説明する。図９
〜図１２に示すように、予め、非接着部分ｎに対応する
面のうち、ラミネートフィルム１を蓋体Ｂに裁断加工し
たとき、前記開口部分Ｃに位置する箇所に耐熱性のイン
ク６を印刷してあるナイロン製基材フィルム１Ａが第１
ロール１０状に巻き取られていて、当該第１ロール１０
から繰り出された、基材フィルム１Ａをコーティング部
７に導き、タンク１１内の接着剤５に浸漬されたコーテ
ィングロール１２とゴムロール１３とによって、ナイロ
ン製基材フィルム１Ａの一側面に接着剤５を塗布する。
この時、前記コーティングロール１２の外周面で、か
つ、前記非接着部分ｎに対応する部分には、前記通気路
４の幅と同じ幅の環状溝１２ａが形成されていて、その
環状溝１２ａに対応する部分には接着剤５が転写されな
いように構成されている。また、第２ロール１４から繰
り出されたポリエチレン製基材フィルム１Ｂをカッティ
ング部８に導き、回転カッタ１５によって前記非接着部
分ｎに対応する部分に切れ目３を入れる。しかるのち、
前記コーティング部Ａから乾燥炉１６を経由して送られ
てくるナイロン製基材フィルム１Ａとカッティング部８
から送られてくるポリエチレン製基材フィルム１Ｂとを
ラミネート部９に導き、これら両基材フィルム１Ａ，１
Ｂを加熱金属ロール１７とゴムロール１８とで貼り合わ
せたのち、冷却ロール１９で冷却し、製造されたラミネ
ートフィルム１を第３ロール２０に巻き取る。前記接着
剤５としては、ウレタン系樹脂、酢酸ビニル系樹脂、天
然ゴム等があり、有機溶剤に溶解して使用する。Next, an example of manufacturing the laminated film 1 by a dry laminating method will be described. Figure 9
As shown in FIG. 12, when the laminate film 1 is cut into the lid B on the surface corresponding to the non-adhesive portion n, the heat-resistant ink 6 is printed on the portion located at the opening portion C in advance. The first nylon base film 1A is
The first roll 10 is wound into a roll 10.
The base material film 1A fed out from the base material 1 is guided to the coating part 7, and the adhesive 5 is attached to one side of the nylon base material film 1A by the coating roll 12 and the rubber roll 13 immersed in the adhesive 5 in the tank 11. Apply.
At this time, an annular groove 12a having the same width as the width of the air passage 4 is formed on the outer peripheral surface of the coating roll 12 and at a portion corresponding to the non-adhesive portion n. The adhesive 5 is configured not to be transferred to the corresponding portion. Further, the polyethylene base material film 1B fed from the second roll 14 is guided to the cutting portion 8 and the cut 3 is made in the portion corresponding to the non-adhesive portion n by the rotary cutter 15. After a while,
Nylon base film 1A and cutting section 8 sent from the coating section A via the drying oven 16.
The polyethylene base film 1B sent from the above is guided to the laminating section 9, and both base films 1A, 1
After B is pasted with the heating metal roll 17 and the rubber roll 18, it is cooled with the cooling roll 19 and the manufactured laminated film 1 is wound on the third roll 20. Examples of the adhesive 5 include urethane-based resin, vinyl acetate-based resin, and natural rubber, which are used after being dissolved in an organic solvent.
【００２３】尚、当該製造方法では、ラミネートフィル
ム１の幅が一つの包装容器の蓋体Ｂの一方向に相当する
幅に設定されているため、接着剤５が塗布されていない
非接着部分ｎがフィルム幅方向の一箇所にだけ形成され
ることになるが、ラミネートフィルム１の幅が複数個の
包装容器の蓋体Ｂの幅に相当する展開幅を有する場合に
は、接着剤５が塗布されていない非接着部分ｎがフィル
ム幅方向の複数箇所に形成されることになる。In the manufacturing method, since the width of the laminate film 1 is set to the width corresponding to one direction of the lid B of one packaging container, the non-adhesive part n to which the adhesive 5 is not applied is applied. Will be formed only at one location in the film width direction, but if the width of the laminate film 1 has a development width corresponding to the width of the lids B of a plurality of packaging containers, the adhesive 5 is applied. The non-bonded portions n that are not formed are formed at a plurality of positions in the film width direction.
【００２４】また、当該製造方法では、前記コーティン
グロール１２の外周面の円周方向に沿って非接着部分ｎ
に対応する環状溝１２ａを形成してあるが、コーティン
グロール１２の外周面の幅方向に沿って直線状の溝を形
成して実施してもよく、この場合はコーティングロール
１２の直径を変更することにより、非接着部分ｎの形成
間隔を変更できる。Further, in the manufacturing method, the non-bonded portion n is formed along the circumferential direction of the outer peripheral surface of the coating roll 12.
Although the annular groove 12a corresponding to the above is formed, a linear groove may be formed along the width direction of the outer peripheral surface of the coating roll 12, and in this case, the diameter of the coating roll 12 is changed. Thereby, the formation interval of the non-adhesive part n can be changed.
【００２５】更に、当該第１実施例では、ナイロンとポ
リエチレンとの２層構造から構成されたラミネートフィ
ルム１を例に挙げて説明したが、この２層構造のものに
限定されるものではなく、例えば、ポリプロピレンと蒸
着ポリエステルとポリエチレンとの３層構造、ナイロン
と蒸着ポリエステルとポリエチレンとの３層構造などが
あり、使用目的等に応じて合成樹脂層の層数と材質を適
宜選定するとよく、また、容器本体Ａの材質を変更する
場合には、最も容器内部空間Ｓ側の基材フィルムを、当
該容器本体Ａと熱融着可能な材質で構成する必要があ
る。Further, in the first embodiment, the laminate film 1 having a two-layer structure of nylon and polyethylene has been described as an example, but the present invention is not limited to this two-layer structure. For example, there are a three-layer structure of polypropylene, vapor-deposited polyester and polyethylene, a three-layer structure of nylon, vapor-deposited polyester and polyethylene, and the number and material of synthetic resin layers may be appropriately selected according to the purpose of use. When the material of the container body A is changed, the base material film closest to the container internal space S needs to be made of a material that can be heat-sealed with the container body A.
【００２６】〔第２実施例〕前述の第１実施例では、非
接着部分ｎがラミネートフィルム１の横幅方向に亘って
一連に形成されているとともに、当該ラミネートフィル
ム１からなる蓋体Ｂの一本の非接着部分ｎを、容器本体
Ａの周縁部分ａのうち、相対向する二つの周縁部分で夫
々横断する状態に構成して、開口部分Ｃが蓋体Ｂの周縁
部分ｂの相対向する二箇所で形成されているが、この構
成に限定されるものではなく、図１３に示すように、ラ
ミネートフィルム１を製造するコーティングロール１２
の外周面の横幅方向一端側から幅方向中心部分に亘っ
て、このコーティングロール１２の横幅よりも短い切欠
き溝１２ｂを形成し、もって、当該コーティングロール
１２を用いて製造される、非接着部分ｎがラミネートフ
ィルム１の横幅方向の一側縁から当該ラミネートフィル
ム１の中心部部分に亘って形成されているラミネートフ
ィルム１を所定寸法に裁断加工して、容器本体Ａの開口
周縁部分ａに熱融着することにより、図１４に示すよう
に、開口部分Ｃが蓋体Ｂの周縁部分ｂに一箇所形成さ
れ、当該開口部分Ｃから蓋体Ｂの中心部に亘って非接着
部分ｎが存在する蓋体Ｂを形成してもよい。[Second Embodiment] In the first embodiment described above, the non-adhesive portion n is formed in series over the width direction of the laminate film 1, and one of the lids B made of the laminate film 1 is formed. The non-adhesive portion n of the book is configured so as to traverse each of two opposite peripheral portions of the peripheral portion a of the container body A, and the opening portion C faces the peripheral portion b of the lid B. Although it is formed in two places, it is not limited to this structure, and as shown in FIG. 13, the coating roll 12 for manufacturing the laminate film 1 is formed.
A notch groove 12b shorter than the lateral width of the coating roll 12 is formed from one end side in the lateral width direction of the outer peripheral surface of the non-adhesive portion, which is manufactured using the coating roll 12. n is cut into a predetermined size from the laminated film 1 formed from one side edge of the laminated film 1 in the width direction to the central portion of the laminated film 1, and heat is applied to the opening peripheral edge portion a of the container body A. By fusion, as shown in FIG. 14, an opening portion C is formed at one position on the peripheral edge portion b of the lid B, and a non-adhesive portion n exists from the opening portion C to the central portion of the lid B. You may form the cover body B which carries out.
【００２７】〔第３実施例〕前述の第１実施例では、連
通口３を非接着部分ｎの長手方向に沿う姿勢で一連に形
成してある切れ目で構成したが、この構成に限定される
ものではなく、図１５に示すように、非接着部分ｎの長
手方向に交差する姿勢で、連通口３を当該非接着部分ｎ
の長手方向に所定間隔を隔てて複数形成して実施しても
よい。[Third Embodiment] In the above-described first embodiment, the communication port 3 is formed by a series of cuts formed in a posture along the longitudinal direction of the non-adhesive portion n, but is not limited to this structure. However, as shown in FIG. 15, the communication port 3 is inserted into the non-adhesive portion n in a posture intersecting the longitudinal direction of the non-adhesive portion n.
A plurality of them may be formed at predetermined intervals in the longitudinal direction.
【００２８】〔第４実施例〕図１６に示すように、前記
ラミネートフィルム１が、４層の合成樹脂層１Ａ〜１Ｄ
から構成されており、かつ、最外側に位置する合成樹脂
層１Ａとそれに隣接する合成樹脂層１Ｂとが互いに熱融
着不能な合成樹脂材料から構成されている場合には、最
外側に位置する合成樹脂層１Ａとそれに隣接する合成樹
脂層１Ｂとの間に非接着部分ｎを形成し、この非接着部
分ｎに対応する容器内部空間Ｓ側の合成樹脂層１Ｂ〜１
Ｄには、前記非接着部分ｎと容器内部空間Ｓとを連通接
続する連通口３を形成して実施してもよい。[Fourth Embodiment] As shown in FIG. 16, the laminated film 1 is composed of four synthetic resin layers 1A to 1D.
And the outermost synthetic resin layer 1A and the adjacent synthetic resin layer 1B are made of synthetic resin materials that cannot be heat-sealed to each other, the outermost synthetic resin layer 1A is located on the outermost side. A non-adhesive portion n is formed between the synthetic resin layer 1A and a synthetic resin layer 1B adjacent to the synthetic resin layer 1A, and the synthetic resin layers 1B to 1B on the container internal space S side corresponding to the non-adhesive portion n.
A communication port 3 may be formed in D to connect the non-adhesive portion n and the container internal space S.
【００２９】〔その他の実施例〕 前述の第１実施例では、粘着層６を耐熱性のインク
で構成したが、当該インクに限定されるものではなく、
前記粘着層６は、耐熱性を備え、かつ、容器内部空間Ｓ
の内気圧が一定以上となった時にその内気圧で開口部分
Ｃを剥離開口可能なものであるならばその材質は限定さ
れない。 前述の第１実施例では、前記連通口３を切れ目から
構成したが、スリット状の貫通孔や円形の貫通孔等から
構成してもよい。 前述の第１実施例では、前記ラミネートフィルム１
をドライラミネート法にて製造したが、この製造方法に
限定されるものではなく、例えば、ウェットラミネート
法、エクストルージョンラミネート法、ホットメルトラ
ミネート法、コ・エクストルージョンラミネート法など
で製造してもよい。[Other Embodiments] In the first embodiment described above, the adhesive layer 6 was made of a heat-resistant ink, but the ink is not limited to the ink.
The pressure-sensitive adhesive layer 6 has heat resistance and has a container internal space S.
The material is not limited as long as the opening C can be peeled and opened by the internal pressure when the internal pressure exceeds a certain level. In the above-described first embodiment, the communication port 3 is composed of a cut, but it may be composed of a slit-shaped through hole, a circular through hole, or the like. In the first embodiment described above, the laminated film 1
Was manufactured by a dry laminating method, but the manufacturing method is not limited to this, and for example, a wet laminating method, an extrusion laminating method, a hot melt laminating method, a co-extrusion laminating method or the like may be used. .
【００３０】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.
【図１】包装容器の通気路の排気状態を示す一部切欠き
斜視図FIG. 1 is a partially cutaway perspective view showing an exhaust state of a ventilation path of a packaging container.
【図２】包装容器の通気路の気密状態を示す一部切欠き
斜視図FIG. 2 is a partially cutaway perspective view showing an airtight state of a ventilation path of a packaging container.
【図３】排気状態における非接着部分の交差方向の断面
図FIG. 3 is a cross-sectional view in a crossing direction of non-bonded portions in an exhausted state.
【図４】排気状態における非接着部分の連続方向の断面
図FIG. 4 is a cross-sectional view in a continuous direction of a non-bonded portion in an exhausted state.
【図５】気密状態における非接着部分の交差方向の断面
図FIG. 5 is a cross-sectional view in a crossing direction of non-bonded portions in an airtight state.
【図６】気密状態における非接着部分の連続方向の断面
図FIG. 6 is a cross-sectional view in a continuous direction of a non-bonded portion in an airtight state.
【図７】ラミネートフィルムの非接着部分形成箇所の分
解斜視図FIG. 7 is an exploded perspective view of a non-adhesive portion forming portion of a laminate film.
【図８】包装後の包装容器を示す斜視図FIG. 8 is a perspective view showing a packaging container after packaging.
【図９】ドライラミネート法による製造方法を示す概略
図FIG. 9 is a schematic view showing a manufacturing method by a dry laminating method.
【図１０】第１ロールから繰り出された基材フィルムを
示す斜視図FIG. 10 is a perspective view showing a base film unrolled from a first roll.
【図１１】コーティング部での接着剤塗布工程を示す斜
視図FIG. 11 is a perspective view showing an adhesive applying step in the coating section.
【図１２】ラミネート部での貼り合わせ工程を示す斜視
図FIG. 12 is a perspective view showing a laminating process in a laminating unit.
【図１３】第２実施例でのコーティング部での接着剤塗
布工程を示す斜視図FIG. 13 is a perspective view showing an adhesive applying step in a coating section in the second embodiment.
【図１４】第２実施例での排気状態における通気路の断
面図FIG. 14 is a sectional view of a ventilation path in an exhaust state according to the second embodiment.
【図１５】第３実施例を示すラミネートフィルムの非接
着部分形成箇所の分解斜視図FIG. 15 is an exploded perspective view of a non-adhesive portion forming portion of a laminate film showing a third embodiment.
【図１６】第４実施例を示す蓋体の拡大断面図FIG. 16 is an enlarged sectional view of a lid body showing a fourth embodiment.
１ ラミネートフィルム １Ａ 合成樹脂層（基材フィルム） １Ｂ 合成樹脂層（基材フィルム） ３ 連通口 ４ 通気路 ５ 接着剤 ６ 粘着層（インク） ａ 開口周縁部分 ｎ 非接着部分 Ａ 容器本体 Ｐ 熱融着箇所 Ｓ 容器内部空間 DESCRIPTION OF SYMBOLS 1 Laminated film 1A Synthetic resin layer (base film) 1B Synthetic resin layer (base film) 3 Communication port 4 Ventilation path 5 Adhesive 6 Adhesive layer (ink) a Opening peripheral edge part n Non-adhesive part A Container body P Heat fusion Landing area S Container internal space
Claims (4)
Ｂ）のうち、少なくとも隣接する一組の合成樹脂層（１
Ａ，１Ｂ）が互いに熱融着不能な合成樹脂材料から構成
されているラミネートフィルム（１）を、耐熱性合成樹
脂製の容器本体（Ａ）の開口周縁部分（ａ）に気密状態
で、かつ、一定以上の力で剥離可能に熱融着してある包
装容器であって、 前記ラミネートフィルム（１）の合成樹脂層（１Ａ，１
Ｂ）のうち、熱融着不能な合成樹脂層（１Ａ，１Ｂ）間
の一部に、前記容器本体（Ａ）の開口周縁部分（ａ）と
の熱融着箇所（Ｐ）を横断する状態で非接着部分（ｎ）
を形成し、この非接着部分（ｎ）に対応する容器内部空
間（Ｓ）側の合成樹脂層（１Ｂ）には、前記非接着部分
（ｎ）と前記容器内部空間（Ｓ）とを連通接続する連通
口（３）を形成して、前記非接着部分（ｎ）と前記連通
口（３）とで容器内部空間（Ｓ）から容器外に通じる通
気路（４）を構成するとともに、前記非接着部分（ｎ）
を形成する合成樹脂層（１Ａ，１Ｂ）部分間の一部を、
容器内部空間（Ｓ）の内気圧が一定以上となった時にそ
の内気圧で剥離開口可能な粘着層（６）をもって気密状
態に閉止してある包装容器。1. A plurality of bonded synthetic resin layers (1A, 1)
B), at least a pair of adjacent synthetic resin layers (1
A laminate film (1) composed of synthetic resin materials (A, 1B) that cannot be heat-sealed to each other is hermetically sealed in the opening peripheral portion (a) of the container body (A) made of heat-resistant synthetic resin, and A packaging container heat-sealable so that it can be peeled off with a certain force or more, wherein the synthetic resin layer (1A, 1) of the laminate film (1) is
Part of B) between the synthetic resin layers (1A, 1B) that cannot be heat-sealed, and a state where the heat-sealing portion (P) with the opening peripheral edge portion (a) of the container body (A) is crossed. Non-adhesive part (n)
And the synthetic resin layer (1B) on the container internal space (S) side corresponding to the non-adhesive portion (n) connects the non-adhesive portion (n) and the container internal space (S) for communication. A non-adhesive part (n) and the communication port (3) form a ventilation path (4) communicating from the container internal space (S) to the outside of the container. Adhesive part (n)
Part between the synthetic resin layers (1A, 1B) forming
A packaging container which is closed in an airtight state with an adhesive layer (6) capable of peeling and opening when the internal pressure of the internal space (S) reaches a certain level or more.
に対応する容器内部空間（Ｓ）側の合成樹脂層（１Ｂ）
に形成された切り目である請求項１記載の包装容器。2. The communication port (3) has a non-adhesive portion (n).
Synthetic resin layer (1B) on the container inner space (S) side corresponding to
The packaging container according to claim 1, wherein the packaging container is a notch formed in the.
なり、当該インクが、前記非接着部分（ｎ）を形成する
合成樹脂層（１Ａ，１Ｂ）部分間のうち、一方の合成樹
脂層（１Ａ）の前記非接着部分（ｎ）に対応する面に印
刷されている請求項１又は２記載の包装容器。3. The adhesive layer (6) is made of a heat-resistant ink, and the ink contains one of the synthetic resin layers (1A, 1B) forming the non-adhesive portion (n). The packaging container according to claim 1 or 2, which is printed on a surface of the layer (1A) corresponding to the non-adhesive portion (n).
される合成樹脂製の基材フィルム（１Ａ，１Ｂ）のう
ち、互いに熱融着不能な二枚の基材フィルム（１Ａ，１
Ｂ）を接合する接着剤（５）の非塗布部分をもって構成
されているとともに、前記インク（６）が、互いに熱融
着不能な一組の合成樹脂層（１Ａ，１Ｂ）のうち、一方
の合成樹脂層（１Ａ）の前記非接着部分（ｎ）に対応す
る面の所定位置に印刷されている包装用ラミネートフィ
ルム。4. Of the synthetic resin substrate films (1A, 1B) in which the non-adhesive portion (n) is joined to a plurality of layers, two substrate films (1A, 1A, 1A, 1B) that cannot be heat-sealed to each other. 1
One of the pair of synthetic resin layers (1A, 1B) that cannot be heat-sealed to each other while being composed of a non-coated portion of the adhesive (5) for joining B). A laminate film for packaging, which is printed at a predetermined position on a surface of the synthetic resin layer (1A) corresponding to the non-adhesive portion (n).
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6219903A JP2574651B2 (en) | 1994-09-14 | 1994-09-14 | Packaging container and packaging laminate film used for the packaging container |
| KR1019940036089A KR100193465B1 (en) | 1993-12-28 | 1994-12-22 | Packing Equipment |
| US08/363,376 US5655842A (en) | 1993-12-28 | 1994-12-23 | Wrapping device |
| EP94309845A EP0661219B1 (en) | 1993-12-28 | 1994-12-28 | Wrapping device |
| DE69423199T DE69423199T2 (en) | 1993-12-28 | 1994-12-28 | Wrapping device |
| TW083112337A TW267986B (en) | 1993-12-28 | 1994-12-29 | |
| US08/852,537 US5839832A (en) | 1993-12-28 | 1997-05-07 | Wrapping device |
| HK98114196A HK1013054A1 (en) | 1993-12-28 | 1998-12-21 | Wrapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6219903A JP2574651B2 (en) | 1994-09-14 | 1994-09-14 | Packaging container and packaging laminate film used for the packaging container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0885580A true JPH0885580A (en) | 1996-04-02 |
| JP2574651B2 JP2574651B2 (en) | 1997-01-22 |
Family
ID=16742843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6219903A Expired - Lifetime JP2574651B2 (en) | 1993-12-28 | 1994-09-14 | Packaging container and packaging laminate film used for the packaging container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2574651B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001019039A (en) * | 1999-07-07 | 2001-01-23 | Daiwa Can Co Ltd | Easily releasable and openable lid |
| CN1083795C (en) * | 1997-11-10 | 2002-05-01 | 株式会社美华巴克士 | Package bag with pressure automatic-regulating function and producing method therefor |
| JP2007204073A (en) * | 2006-01-31 | 2007-08-16 | Meiwa Pax Co Ltd | Packaging container for heating in microwave oven |
| JP2015083495A (en) * | 2013-09-17 | 2015-04-30 | 株式会社パックス | Packaging container and manufacturing method of the same |
| WO2019017372A1 (en) * | 2017-07-21 | 2019-01-24 | 北村化学産業株式会社 | Lid body and method for manufacturing same |
-
1994
- 1994-09-14 JP JP6219903A patent/JP2574651B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083795C (en) * | 1997-11-10 | 2002-05-01 | 株式会社美华巴克士 | Package bag with pressure automatic-regulating function and producing method therefor |
| JP2001019039A (en) * | 1999-07-07 | 2001-01-23 | Daiwa Can Co Ltd | Easily releasable and openable lid |
| JP2007204073A (en) * | 2006-01-31 | 2007-08-16 | Meiwa Pax Co Ltd | Packaging container for heating in microwave oven |
| JP4716368B2 (en) * | 2006-01-31 | 2011-07-06 | 株式会社メイワパックス | Packaging container for microwave oven heating |
| JP2015083495A (en) * | 2013-09-17 | 2015-04-30 | 株式会社パックス | Packaging container and manufacturing method of the same |
| WO2019017372A1 (en) * | 2017-07-21 | 2019-01-24 | 北村化学産業株式会社 | Lid body and method for manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2574651B2 (en) | 1997-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100193465B1 (en) | Packing Equipment | |
| JP3061234U (en) | Food container for cooking in microwave | |
| JP4586728B2 (en) | Packaging bag having steam venting function and packaging body using the same | |
| JP2007168832A (en) | Package for microwave-heating | |
| JP4136091B2 (en) | Packaging material that can release internal pressure | |
| AU2018234993B2 (en) | One-way valve for food packages | |
| JP2008174310A (en) | Label for fracture due to microwave, and package for microwave treatment | |
| JPH0885580A (en) | Packaging container and laminate film therefor | |
| JPH11147559A (en) | Lid material and container using the same | |
| JP2000025850A (en) | Packaging bag for microwave oven | |
| JPH11208739A (en) | Packaging body | |
| JP2005041544A (en) | Packaging bag with steam venting function and package using it | |
| JP4826279B2 (en) | Microwave packaging bag | |
| JPH1017030A (en) | Packaging bag | |
| JPH09286471A (en) | Packaging bag | |
| JP2000289784A (en) | Container for microwave oven heated food | |
| JP2005511422A (en) | Microwave-heatable packaging | |
| JP6864496B2 (en) | Manufacturing method of cooking container and cooking container | |
| EP2246271B1 (en) | Heat sealed sack of flexible film comprising a relief valve | |
| JP2005350102A (en) | Package for heating by microwave oven | |
| JPH0995367A (en) | Sealed packaging bag and sealed packaging container | |
| JP2003128160A (en) | Packaging bag used in microwave oven | |
| JPH09267870A (en) | Internal pressure adjusting structure for sealed container | |
| JPH0995365A (en) | Sealed packaging bag and sealed packaging container | |
| JP2001240148A (en) | Packaging bag with steam discharging hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071024 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081024 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091024 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101024 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101024 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111024 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111024 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121024 Year of fee payment: 16 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121024 Year of fee payment: 16 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131024 Year of fee payment: 17 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |