JP2019136930A - Laminate film, package bag, and package container - Google Patents
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Abstract
Description
本発明は、内容物を電子レンジで加熱する際に、その被加熱物の加熱をより好適にするための積層フィルム、包装袋および包装容器に関する。 The present invention relates to a laminated film, a packaging bag, and a packaging container for making heating of an object to be heated more suitable when the contents are heated in a microwave oven.
従来、食品その他の被加熱物を包装容器に内封し、電子レンジを用いて加熱する際に、包装容器内で発生する蒸気の逃げ場がないことで包装容器が破裂してしまう虞を回避するため、加熱に伴い包装容器に蒸気の排出口を出現させる方法や、その方法を実現する構造を設けた包装容器が提案されている。 Conventionally, when a food or other object to be heated is enclosed in a packaging container and heated using a microwave oven, there is no risk of the packaging container bursting due to the lack of escape for the steam generated in the packaging container. For this reason, a method for causing a steam outlet to appear in the packaging container with heating, and a packaging container provided with a structure for realizing the method have been proposed.
例えば特許文献１には、積層フィルムのうち内層のシール層が線状低密度ポリエチレン（以下、ＬＬＤＰＥと記す）であり、レーザー照射により脆弱加工が形成された積層フィルムおよび包装容器が開示されている。これによれば、電子レンジで加熱しても蒸気の逃げ場があることで、蒸気が溜まることで包装容器の内圧が高まりすぎて破裂してしまうことを防ぐことができ、被加熱物を適度に加熱し、蒸し効果を加えることが可能であるとしている。 For example, Patent Document 1 discloses a laminated film and a packaging container in which the inner sealing layer of the laminated film is linear low density polyethylene (hereinafter referred to as LLDPE), and a fragile process is formed by laser irradiation. . According to this, even if heated in a microwave oven, there is a place for escape of steam, so that the internal pressure of the packaging container can be prevented from being excessively increased due to the accumulation of steam, and the object to be heated can be appropriately It is said that it can be heated and steamed.
しかしながら上記の文献に開示されている積層フィルムでは、内層のフィルムをＬＬＤＰＥと限定しているが、ＬＬＤＰＥの融点は１２０℃程度であることから、より高温での加熱や蒸らしが必要な内容物の包装袋には適用できなかった。また電子レンジの性能や内容物の特性によっては高温になった内層のＬＬＤＰＥが溶融して包装袋の内部で溶着してしまう内部溶着、あるいは内層のＬＬＤＰＥが軟化して包装袋を密封している周縁のシール部が徐々に剥がれる、いわゆるシール後退、などが起こる虞があり、特に内容物が食品等である場合は大きな問題であった。 However, in the laminated film disclosed in the above-mentioned document, the inner layer film is limited to LLDPE. However, since the melting point of LLDPE is about 120 ° C., the contents of the contents that need to be heated or steamed at a higher temperature are used. It could not be applied to packaging bags. Also, depending on the performance of the microwave oven and the characteristics of the contents, the inner layer LLDPE that has become hot melts and welds inside the packaging bag, or the inner layer LLDPE softens and seals the packaging bag. There is a risk that the peripheral seal portion will be gradually peeled off, so-called seal retreat, and the like, which is a big problem particularly when the contents are food or the like.
この様な問題点に対して、内層のフィルムとしてより融点の高い無延伸ポリプロピレン（以下、ＣＰＰと記す）を適用することができれば、より高温での加熱が行なえ好ましいが、ＣＰＰを内層のフィルムとして外層に線状の脆弱加工部を設けた場合は、脆弱加工部が破断されるときにより高温、高圧の状態となっていることから一気に破断が起こり、破断の際に大きな破裂音がしたり、一気に大きな開口ができて内容物が飛び散って電子レンジの内側を汚染したり、また逆に破断が適切に起こらずフィルムが大きく伸びてしまう虞があったため、適用が困難であった。 For such problems, it is preferable that unstretched polypropylene (hereinafter referred to as CPP) having a higher melting point can be applied as the inner layer film, which can be heated at a higher temperature. However, CPP can be used as the inner layer film. When a linear fragile portion is provided in the outer layer, the rupture occurs at a stretch because the fragile portion is broken at a higher temperature and pressure, and a loud bursting sound is generated at the time of rupture, It was difficult to apply because a large opening could be formed at once, and the contents would scatter and contaminate the inside of the microwave oven, or conversely, the film would not grow properly and the film would stretch greatly.
本発明は上記の様な従来技術の課題を解決するもので、ＣＰＰを内層のフィルムに適用した積層フィルムであって、高温での加熱が可能であると共に、電子レンジでの加熱時の脆弱加工部の破断と通蒸が安定して行え、大きな開口が一気に形成されて内容物が飛び出して電子レンジの内側を汚染したり、大きな破裂音を生じたりする虞のない積層フィルム、包装袋および包装容器を提供することを課題とする。 The present invention solves the problems of the prior art as described above, and is a laminated film in which CPP is applied to an inner film, which can be heated at a high temperature and is fragile when heated in a microwave oven. Laminated film, packaging bag, and packaging that can stably break and pass through the steam, have large openings formed at once, and the contents do not pop out and contaminate the inside of the microwave oven or produce a loud burst It is an object to provide a container.
上記課題を解決するため、本発明の請求項１に係る発明は、
無延伸ポリプロピレンからなる熱融着可能な内層と、前記内層に積層された外層を備えた積層フィルムであって、前記外層に、深さを有する線状加工部、および前記線状加工部が交差した脆弱加工部、がレーザー照射により形成されていることを特徴とする積層フィルムである。
In order to solve the above problems, the invention according to claim 1 of the present invention provides:
A laminated film comprising an inner layer made of unstretched polypropylene and heat-sealable, and an outer layer laminated on the inner layer, wherein the outer layer is intersected by a linear processed part having a depth and the linear processed part The laminated film is characterized in that the fragile processed portion is formed by laser irradiation.
また、本発明の請求項２に係る発明は、
請求項１に記載の積層フィルムと、同様の層構成で前記線状加工部のない積層フィルムの、それぞれの内層を内側に配置し、所定のシール部により袋状に貼り合せたことを特徴とする包装袋である。
The invention according to claim 2 of the present invention is
The laminated film according to claim 1 and a laminated film having the same layer structure and having no linear processed portion, each inner layer is disposed inside, and is bonded in a bag shape by a predetermined seal portion. It is a packaging bag.
また、本発明の請求項３に係る発明は、
請求項１に記載の積層フィルムの内層を内側に配置し、所定のシール部により収納部を有する容器の開口部を封止する蓋材としたことを特徴とする包装容器である。
The invention according to claim 3 of the present invention is
A packaging container characterized in that the inner layer of the laminated film according to claim 1 is disposed on the inner side, and a lid member for sealing an opening of a container having a storage part by a predetermined seal part.
本発明の請求項１に記載の発明によれば、積層フィルムの外層にレーザー照射により深さを有する線状加工部が形成され、さらに線状加工部が交差した脆弱加工部が形成されているため、例えば積層フィルムを加熱調理用の包装袋などに適用した際に、加熱による水蒸気の発生などによる袋の膨張のため積層フィルムに張力が加わったときに、レーザー照射により厚みが薄くなって破断強度が低い線状加工部のうちでもより破断強度の低い脆弱加工部の部位でまず微小な破断が起こり、形成された微小な開口から蒸気が徐々に放出され、内圧が高まるに連れて線状加工部の他の部分もフィルムが伸び、高温での加熱が可能なＣＰＰを内層に用いた場合でもフィルムの伸びを利用し蒸らし調理を行うことで、一気に破断が起こって破断の際に大きな破裂音がしたり、一気に大きな開口ができて内容物が飛び散って電子レンジの内側を汚染したりする虞のない積層フィルムが得られる。 According to the first aspect of the present invention, a linearly processed portion having a depth is formed on the outer layer of the laminated film by laser irradiation, and a fragile processed portion intersecting the linearly processed portions is formed. Therefore, for example, when a laminated film is applied to a packaging bag for cooking, etc., when tension is applied to the laminated film due to expansion of the bag due to generation of water vapor due to heating, the thickness is reduced by laser irradiation and breaks Even in the low-strength line-processed part, first, a minute break occurs at the weakly-processed part with a lower breaking strength, and vapor is gradually released from the formed small opening, and the line shape increases as the internal pressure increases. Even when other parts of the processed part are stretched and CPP, which can be heated at high temperature, is used for the inner layer, steaming cooking is performed using the stretch of the film. Or the popping sound, possibly without laminated film or contaminate the inside of the microwave oven splashed contents product can once large opening is obtained.
また請求項２に記載の発明によれば、加熱調理に用いたときにより高温での調理が可能で内容物の選択の幅が広くなると共に、袋の内部で発生した蒸気を開口から安定して逃がすことが出来、破断が起こって破断の際に大きな破裂音がしたり、大きな開口ができて内容物が飛び散って電子レンジの内側を汚染したりする虞のない包装袋が得られる。 Further, according to the invention described in claim 2, when used for cooking, cooking at a higher temperature is possible, the range of selection of the contents is widened, and the steam generated inside the bag is stabilized from the opening. A packaging bag can be obtained that can be released and does not have a risk of breaking and causing a loud bursting sound at the time of breaking, or having a large opening and the contents scattering to contaminate the inside of the microwave oven.
また請求項３に記載の発明によれば、加熱調理に用いたときに高温での調理が可能で内容物の選択の幅が広くなると共に、容器の内部で発生した蒸気を蓋材の開口から安定して逃がすことが出来、破断が起こって破断の際に大きな破裂音がしたり、大きな開口ができて内容物が飛び散って電子レンジの内側を汚染したりする虞のない包装容器が得られる。 According to the invention of claim 3, when used for cooking, cooking at a high temperature is possible, the range of selection of contents is widened, and steam generated inside the container is discharged from the opening of the lid. A packaging container can be obtained that can be released stably and does not have the risk of rupturing and making a loud plosive sound at the time of rupture, or having a large opening and the contents splashing and contaminating the inside of the microwave oven .
以下、本発明の実施の形態を、図面を参照しながら詳細に説明する。なお本発明は以下に説明する実施形態に限定されるものではない。また、同等の部材等には同じ符号を付して説明を省略することがある。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below. Moreover, the same code | symbol may be attached | subjected to an equivalent member etc. and description may be abbreviate | omitted.
図１は、本発明の積層フィルムに線状加工部を形成する様子の模式図である。積層フィルム１は基材となる外層１１と、シーラント層となる無延伸ポリプロピレン樹脂（ＣＰＰ）の内層１２で形成され、公知のドライラミネーションにより接着できる。外層１１にはレーザー光源１００からレーザー光を照射することで深さを有する線状加工部１３が形成されている。ここでは２本の線状加工部１３が交差して脆弱加工部１４を形成している。また深さを有するとは、図１に示す様に、表面側から溝状または穴状に掘り込まれていることを意味する。 Drawing 1 is a mimetic diagram of a mode that a linear processing part is formed in a lamination film of the present invention. The laminated film 1 is formed of an outer layer 11 serving as a base material and an inner layer 12 of an unstretched polypropylene resin (CPP) serving as a sealant layer, and can be bonded by a known dry lamination. The outer layer 11 is formed with a linear processed portion 13 having a depth by irradiating laser light from the laser light source 100. Here, the two linear processed portions 13 intersect to form a weakly processed portion 14. Moreover, having depth means that it is dug in the shape of a groove or a hole from the surface side as shown in FIG.
外層１１はプラスチックフィルムで形成され、例えばポリエチレンテレフタレート（ＰＥＴ）フィルム、ナイロン（ＮＹ）フィルムなどが好適に利用できるが、これに限定されず、適度な強度とＣＰＰとのラミネート適性を有するものであれば好適に使用できる。レーザー光源１００としては、炭酸ガスレーザー光源が好ましく使用できるが、フィルムの樹脂の種類によっては他のレーザー光源を採用しても良い。 The outer layer 11 is formed of a plastic film. For example, a polyethylene terephthalate (PET) film or a nylon (NY) film can be suitably used. However, the outer layer 11 is not limited to this, and has an appropriate strength and a CPP laminateability. Can be preferably used. As the laser light source 100, a carbon dioxide laser light source can be preferably used, but other laser light sources may be adopted depending on the type of resin of the film.
図２は、本発明の積層フィルムの線状加工部および脆弱加工部の例を示す図である。線状加工部１３は、積層フィルム１の外層に形成され、複数の線状加工部１３が互いに交差して脆弱加工部１４が形成されている。脆弱加工部１４は、深さを有して溝状になっている線状加工部１３が交差しているため、破断強度が他の部分よりも低くなっており、積層フィルム１に張力がかかったときに他の部分に先行して破断が起きやすくなっている。脆弱加工部１４は図２（ａ）のような１箇所に限らず、図２（ｂ）のように２箇所でも、図２（ｃ）のように多数箇所でも良い。 FIG. 2 is a diagram illustrating an example of a linearly processed portion and a fragile processed portion of the laminated film of the present invention. The linear processed part 13 is formed in the outer layer of the laminated film 1, and a plurality of linear processed parts 13 intersect with each other to form a fragile processed part 14. Since the fragile processed portion 14 intersects the linear processed portion 13 having a groove shape with a depth, the breaking strength is lower than that of other portions, and tension is applied to the laminated film 1. It is easy to break before other parts. The fragile processing portion 14 is not limited to one place as shown in FIG. 2A, but may be two places as shown in FIG. 2B or multiple places as shown in FIG.
線状加工部１３を交差させる態様は、上記の例の様に単純に直交させる以外にも、例えば図２（ｄ）のような斜交、図２（ｅ）のような３本以上の線状加工部１３の一点での交差、図２（ｆ）のような２本の平行な線状加工部１３に他の１本の線状加工部を交差させるなど種々の態様として良い。また線状加工部１３は図示した様な連続線状だけでなく、所望の破断強度に応じて破線状としても良い。 For example, the cross-sections of the linearly processed portions 13 are not simply made orthogonal as in the above example, but are also obliquely crossed as shown in FIG. 2D and three or more lines as shown in FIG. Various forms may be employed, such as crossing at one point of the line-shaped processed part 13 or crossing another parallel line-processed part 13 with two parallel line-shaped processed parts 13 as shown in FIG. Further, the linear processed portion 13 is not limited to a continuous linear shape as illustrated, but may be a broken line shape according to a desired breaking strength.
図３は、本発明の積層フィルムを使用した加熱調理用の包装袋２で加熱調理を行ったときの態様の模式図であり、包装袋２を、脆弱加工部１４を通る直線で切断した断面と、線状加工部１３を平面視した態様を時系列で示している。包装袋２は、矩形状とした本発明の積層フィルム１からなるトップシート１０と、同様の層構成で線状加工部のない積層フィルムからなるボトムシート２０を、互いの内層が内側となるように対向させて所定のシール部２１で貼り合せ、内部に収納部を設け、水と加熱用食品を収納したものである。所定のシール部２１は典型的には周縁部であるが、それ以外の部分を含んでも良い。トップシート１０の積層シート１には２本の線状加工部１３が形成され、互いに交差して脆弱加工部１４が形成されている（図３（ａ））。 FIG. 3 is a schematic view of a mode when cooking is performed with the packaging bag 2 for cooking using the laminated film of the present invention, and the section obtained by cutting the packaging bag 2 with a straight line passing through the fragile processed portion 14. And the aspect which planarly viewed the linear process part 13 is shown in time series. The packaging bag 2 has a rectangular top sheet 10 made of the laminated film 1 of the present invention, and a bottom sheet 20 made of a laminated film having a similar layer structure and no linear processed portion, with the inner layers being inside. And a predetermined seal portion 21 so as to face each other, and a storage portion is provided inside to store water and food for heating. The predetermined seal portion 21 is typically a peripheral portion, but may include other portions. Two linear processed portions 13 are formed on the laminated sheet 1 of the top sheet 10, and a fragile processed portion 14 is formed so as to intersect each other (FIG. 3A).
次いで、上記の包装袋２をトップシート１０側が上側となる様にして電子レンジに載置して加熱する。加熱されることにより包装袋２に内封された水分が気化して水蒸気１６となることで膨張し、包装袋２が膨らむと共に内圧が高まってくるため、トップシート１０およびボトムシート２０に掛かる張力が次第に高まり、トップシート１０およびボトムシート２０が右側の図の黒矢印の方向に伸びると共に線状加工部１３および脆弱加工部１４を破断しようとする力となる（図３（ｂ））。 Next, the packaging bag 2 is placed in a microwave oven and heated so that the top sheet 10 side is on the upper side. When heated, the moisture enclosed in the packaging bag 2 is vaporized to become the water vapor 16 and expands, and the packaging bag 2 expands and the internal pressure increases. Therefore, the tension applied to the top sheet 10 and the bottom sheet 20 Gradually increases, and the top sheet 10 and the bottom sheet 20 extend in the direction of the black arrow on the right side of the drawing and become a force for breaking the linearly processed portion 13 and the fragile processed portion 14 (FIG. 3B).
さらに加熱を続けると、包装袋２の内圧がさらに高まってトップシート１０およびボトムシート２０にかかる張力もさらに大きくなり、線状加工部１３のうち破断強度が他の部分よりも低くなっている脆弱加工部１４が耐え切れなくなり他の部分に先だって破断される。脆弱加工部１４が破断されることにより、微小な開口１５が形成され、少量の水蒸気１６の包装袋外部への放出が始まる（図３（ｃ））。 If the heating is further continued, the internal pressure of the packaging bag 2 is further increased, the tension applied to the top sheet 10 and the bottom sheet 20 is further increased, and the breaking strength of the linear processed portion 13 is lower than the other portions. The processed part 14 cannot be endured and is broken prior to other parts. When the fragile portion 14 is broken, a minute opening 15 is formed, and a small amount of water vapor 16 starts to be released to the outside of the packaging bag (FIG. 3C).
脆弱加工部１４が一旦破断されると、脆弱加工部１４に連続した線状加工部１３が徐々に伸び、破裂することが無くなる。開口１５が微小で水蒸気１６の放出による内圧の低下
よりも加熱の継続による内圧の上昇の度合いが大きいうちは、脆弱加工部１４に連続した線状加工部１３にはフィルムが伸びる力がかかり続けることで線状加工部１３のフィルム伸びが進行し、徐々に開口１５が拡大し、水蒸気１６の放出量も増える（図３（ｄ））。
Once the fragile processed portion 14 is broken, the linear processed portion 13 continuous to the fragile processed portion 14 is gradually extended and is not ruptured. As long as the opening 15 is small and the increase in the internal pressure due to the continued heating is larger than the decrease in the internal pressure due to the release of the water vapor 16, the linear processing portion 13 continuous to the fragile processing portion 14 continues to be subjected to the force of extending the film. As a result, the film elongation of the linearly processed portion 13 proceeds, the opening 15 gradually expands, and the amount of water vapor 16 released also increases (FIG. 3D).
すなわち、包装袋２の破断はまず脆弱加工部１４に微小な大きさの開口１５が形成されることから始まり、徐々に脆弱加工部１４の伸びが拡大してゆくため、一定量にて水蒸気１６が放出され続けることとなり、一気に大きな開口が形成されて内容物が飛び出したり、破裂するような大きな音を発したりする虞がない。また、脆弱加工部１４のフィルム伸びは、加熱による内圧の上昇と、水蒸気の放出による内圧の低下の釣り合うところで止まるため、その時点で一定の内圧となって蒸らしの効果も得られる。 That is, the rupture of the packaging bag 2 starts with the opening 15 having a very small size in the fragile processed portion 14, and the elongation of the fragile processed portion 14 gradually expands. Will continue to be released, and there is no possibility that a large opening will be formed at a stretch and the contents will pop out or make a loud sound that bursts. Further, since the film elongation of the fragile processed portion 14 stops at the balance between the increase in internal pressure due to heating and the decrease in internal pressure due to the release of water vapor, the film has a constant internal pressure at that time, and a steaming effect is also obtained.
シーラント層となる内層１２を構成するＣＰＰは融点が約１４０℃で、ＬＬＤＰＥの融点が約１２０℃であるのに比べ高いため、電子レンジの加熱でシール後退が起こる虞が少なく、加熱調理時に高温になり易い内容物でも調理することができ、内容物の選択の幅を広げることができる。 Since the CPP constituting the inner layer 12 serving as the sealant layer has a melting point of about 140 ° C. and the melting point of LLDPE is higher than about 120 ° C., there is little risk of seal retraction due to heating in the microwave oven, and high temperature during cooking It is possible to cook even the content that tends to become, and it is possible to widen the range of selection of the content.
図４は、本発明の包装容器３で加熱調理を行ったときの態様の断面模式図であり、包装容器３を、脆弱加工部１４を通る直線で切断した断面と、線状加工部１３を平面視した態様を時系列で示している。包装容器３は、フランジ部３２で囲まれた開口部を有して内部に収納部３１を設けた容器本体３０に、請求項１に記載の積層フィルム１を蓋材３５として、その内層１２をフランジ部３２に接着して所定のシール部として密封するもので、収納部３１に水３３と共に被加熱物３４を封入して内容物とし使用される。外層１１には２本以上の線状加工部１３と、脆弱加工部１４が形成されている。（図４（ａ））。 FIG. 4 is a schematic cross-sectional view of an embodiment when cooking is performed with the packaging container 3 of the present invention, and a cross-section obtained by cutting the packaging container 3 with a straight line passing through the fragile processing portion 14 and the linear processing portion 13. The aspect seen planarly is shown in time series. The packaging container 3 has an opening part surrounded by a flange part 32 and a container body 30 provided with a storage part 31 therein. The laminated film 1 according to claim 1 is used as a lid 35, and the inner layer 12 is provided. It adheres to the flange portion 32 and is sealed as a predetermined seal portion. The object to be heated 34 is enclosed in the storage portion 31 together with water 33 and used as the contents. In the outer layer 11, two or more linear processed portions 13 and a fragile processed portion 14 are formed. (FIG. 4A).
包装容器３を電子レンジで加熱すると、加熱されることにより包装容器３に内封された水分が気化して水蒸気１６となることで膨張し、蓋材３５が膨らむと共に内圧が高まってくるため、蓋材３５に掛かる張力が次第に高まり、右側の図の黒矢印の方向に線状加工部１３および脆弱加工部１４を破断しようとする力となる（図４（ｂ））。 When the packaging container 3 is heated with a microwave oven, the water enclosed in the packaging container 3 is heated to be vaporized to become the water vapor 16, so that the lid 35 is expanded and the internal pressure is increased. The tension applied to the lid member 35 gradually increases, and becomes a force for breaking the linearly processed portion 13 and the fragile processed portion 14 in the direction of the black arrow in the right figure (FIG. 4B).
さらに加熱を続けると、包装容器３の内圧がさらに高まって蓋材３５にかかる張力もさらに大きくなり、線状加工部１３のうち破断強度が他の部分よりも低くなっている脆弱加工部１４が耐え切れなくなり他の部分に先だって破断される。脆弱加工部１４が破断されることにより、微小な開口１５が形成され、少量の水蒸気１６の容器外部への放出が始まる（図４（ｃ））。 When the heating is further continued, the internal pressure of the packaging container 3 is further increased, the tension applied to the lid member 35 is further increased, and the fragile processed portion 14 whose breaking strength is lower than other portions of the linear processed portion 13 is obtained. It cannot be tolerated and is torn before other parts. When the fragile portion 14 is broken, a minute opening 15 is formed, and a small amount of water vapor 16 starts to be released to the outside of the container (FIG. 4C).
脆弱加工部１４が一旦破断されると、脆弱加工部１４に連続した線状加工部１３にも力が加わりフィルム伸びが進行しやすくなり、開口１５が微小で水蒸気１６の放出による内圧の低下よりも加熱の継続による内圧の上昇の度合いが大きいうちは、脆弱加工部１４に連続した線状加工部１３には破断する力がかかり続けることで線状加工部１３に沿ったフィルム伸びが進行し、開口１５から安定して水蒸気１６が放出される（図４（ｄ））。 Once the fragile processed portion 14 is broken, a force is applied to the linear processed portion 13 continuous to the fragile processed portion 14 so that the film is easily stretched. The opening 15 is minute and the internal pressure is reduced due to the discharge of the water vapor 16. However, as long as the degree of increase in the internal pressure due to the continued heating is large, the film processing along the linearly processed portion 13 proceeds as the breaking force is continuously applied to the linearly processed portion 13 continuous to the fragile processed portion 14. The water vapor 16 is stably released from the opening 15 (FIG. 4D).
すなわち、包装容器３においても包装袋２と同様、一気に大きな開口が形成されて内容物が飛び出したり、破裂するような大きな音を発したりする虞がない。また、開口１５の拡大、脆弱加工部１４のフィルム伸びは、加熱による内圧の上昇と、水蒸気の放出による内圧の低下の釣り合うところで止まるため、その時点で一定の内圧となって蒸らしの効果も得られる。 That is, in the packaging container 3 as well as the packaging bag 2, there is no possibility that a large opening is formed at a stretch and the contents pop out or make a loud sound that bursts. Moreover, since the expansion of the opening 15 and the film elongation of the fragile processed portion 14 stop at the balance between the increase of the internal pressure due to heating and the decrease of the internal pressure due to the release of water vapor, the internal pressure becomes constant at that time and the effect of steaming is also obtained. It is done.
以下に実施例により本発明をさらに詳細に説明する。
各実施例に共通する項目は次のとおりである。
◆加熱方法：出力５００Ｗの電子レンジにて最大６分半加熱。
◆内容物：直径８５ｍｍ、厚さ２５ｍｍのハンバーグ １個
◆評価項目（目視にて確認）
・内面溶着の有無：有る場合は×、無い場合は○とした。
・シール後退の有無：有る場合は×、無い場合は○とした。
・開口および通蒸の状態：開口の形成と通蒸が良好に行われた場合は○、そうでない場合は×とした。
・なお、内部溶着、シール後退が起きたサンプルは開口および通蒸の評価は行わなかった。
Hereinafter, the present invention will be described in more detail with reference to examples.
Items common to the embodiments are as follows.
◆ Heating method: Heat up to 6 1/2 minutes in a microwave oven with an output of 500W
◆ Contents: One hamburger with a diameter of 85mm and a thickness of 25mm ◆ Evaluation items (confirmed visually)
-Presence / absence of inner surface welding: x if present, o if not present.
-Presence / absence of seal retraction: X when present, and ○ when absent.
-State of opening and steaming: ○ when the formation and steaming of the opening were performed well, and x otherwise.
・ Note that the samples with internal welding and seal receding were not evaluated for opening and steaming.
＜実施例１＞
（１）サンプル形態
・トップシートとボトムシートを周縁部で貼り合せた包装袋形状とした。
（２）積層フィルムの構成
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＣＰＰ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＣＰＰ（厚さ３０μｍ）
（３）線状加工部および脆弱加工部
・トップシートに炭酸ガスレーザーにより、長さ５０ｍｍの線状加工部Ａを形成し、さらに線状加工部Ａに直角に交差する長さ４ｍｍの４本の線状加工部Ｂを１０ｍｍ間隔となる様に形成し、交差する４点を脆弱加工部とした。
<Example 1>
(1) Sample form-It was set as the packaging bag shape which bonded the top sheet and the bottom sheet in the peripheral part.
(2) Structure of laminated film: Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: CPP (thickness 30 μm)
Bottom sheet: Outer layer: PET (thickness 12 μm), Inner layer: CPP (thickness 30 μm)
(3) A linearly processed portion, a fragile processed portion, and a top sheet are formed with a carbon dioxide laser to form a linearly processed portion A having a length of 50 mm, and four pieces of 4 mm in length intersecting the linearly processed portion A at a right angle. Were formed so as to have an interval of 10 mm, and four intersecting points were defined as fragile processed portions.
＜実施例２＞
・長さ４０ｍｍの２本の線状加工部を角度約３０°で交差する様に形成し、交差する点を脆弱加工部とした。
・それ以外は実施例１と同様として包装袋を作成した。
<Example 2>
-Two linear processed parts having a length of 40 mm were formed so as to intersect at an angle of about 30 °, and the intersecting point was defined as a fragile processed part.
-Other than that, the packaging bag was created like Example 1. FIG.
＜実施例３＞
・長さ５０ｍｍの線状加工部Ａを形成し、線状加工部Ａに直角に交差する長さ１０ｍｍの２本の線状加工部Ｂを２５ｍｍ間隔で形成し、交差する２点を脆弱加工部とした。
・それ以外は実施例１と同様として包装袋を作成した。
<Example 3>
-A linear machined part A with a length of 50 mm is formed, two linear machined parts B with a length of 10 mm intersecting the linear machined part A at right angles are formed at 25 mm intervals, and the two intersecting points are subjected to brittle machining The part.
-Other than that, the packaging bag was created like Example 1. FIG.
＜実施例４＞
・長さ５０ｍｍの線状加工部Ａを２本平行に間隔５ｍｍで形成し、２本の線状加工部Ａの中央で直角に交差する長さ１５ｍｍの線状加工部Ｂを形成し、交差する２点を脆弱加工部とした。
・それ以外は実施例１と同様として包装袋を作成した。
<Example 4>
-Two linear processed parts A having a length of 50 mm are formed in parallel with an interval of 5 mm, and a linear processed part B having a length of 15 mm intersecting at a right angle in the center of the two linear processed parts A is formed. Two points to be used were designated as fragile parts.
-Other than that, the packaging bag was created like Example 1. FIG.
＜実施例５＞
・長さ５０ｍｍの線状加工部Ａを形成し、線状加工部Ａの中央で直角に交差する長さ１５ｍｍの線状加工部Ｂを形成し、交差する点を脆弱加工部とした。
・それ以外は実施例１と同様として包装袋を作成した。
<Example 5>
A linear processed part A having a length of 50 mm was formed, a linear processed part B having a length of 15 mm intersecting at a right angle at the center of the linear processed part A was formed, and the intersecting point was defined as a fragile processed part.
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例１＞
・長さ５０ｍｍの線状加工部を１本形成した。
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 1>
-One linear processed part with a length of 50 mm was formed.
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例２＞
・長さ４０ｍｍの線状加工部を２本平行に間隔１０ｍｍで形成した。
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative example 2>
-Two linearly processed parts having a length of 40 mm were formed in parallel at an interval of 10 mm.
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例３＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＣＰＰ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：イージーピールフィルム（以下ＥＰと記す）（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 3>
-Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: CPP (thickness 30 μm)
Bottom sheet: outer layer: PET (thickness 12 μm), inner layer: easy peel film (hereinafter referred to as EP) (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例４＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＣＰＰ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＬＬＤＰＥ（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 4>
-Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: CPP (thickness 30 μm)
-Bottom sheet: outer layer: PET (thickness 12 μm), inner layer: LLDPE (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例５＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＬＬＤＰＥ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＬＬＤＰＥ（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 5>
・ Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: LLDPE (thickness 30 μm)
-Bottom sheet: outer layer: PET (thickness 12 μm), inner layer: LLDPE (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例６＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＬＬＤＰＥ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＥＰ（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 6>
・ Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: LLDPE (thickness 30 μm)
-Bottom sheet: outer layer: PET (thickness 12 μm), inner layer: EP (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例７＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＬＬＤＰＥ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＣＰＰ（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 7>
・ Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: LLDPE (thickness 30 μm)
Bottom sheet: Outer layer: PET (thickness 12 μm), Inner layer: CPP (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例８＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＥＰ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＬＬＤＰＥ（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 8>
-Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: EP (thickness 30 μm)
-Bottom sheet: outer layer: PET (thickness 12 μm), inner layer: LLDPE (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例９＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＥＰ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＥＰ（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 9>
-Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: EP (thickness 30 μm)
-Bottom sheet: outer layer: PET (thickness 12 μm), inner layer: EP (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜比較例１０＞
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＥＰ（厚さ３０μｍ）
・ボトムシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＣＰＰ（厚さ３０μｍ）
・それ以外は実施例１と同様として包装袋を作成した。
<Comparative Example 10>
-Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: EP (thickness 30 μm)
Bottom sheet: Outer layer: PET (thickness 12 μm), Inner layer: CPP (thickness 30 μm)
-Other than that, the packaging bag was created like Example 1. FIG.
＜実施例６＞
（１）形態
・トップシートの内層と、フランジを有するポリプロピレン樹脂（以下ＰＰと記す）製のカップ状容器をフランジ部で貼り合せた包装容器形状とした。
（２）積層フィルムの構成
・トップシート：外層：ＰＥＴ（厚さ１２μｍ）、内層：ＣＰＰ（厚さ３０μｍ）
（３）線状加工部および脆弱加工部
・トップシートに炭酸ガスレーザーにより、線状加工部を、長さ３０ｍｍで２本、角度約３０°で交差する様に形成し、交差する点を脆弱加工部とした。
<Example 6>
(1) Form: A packaging container shape in which an inner layer of a top sheet and a cup-shaped container made of polypropylene resin (hereinafter referred to as PP) having a flange are bonded together at a flange portion.
(2) Structure of laminated film: Top sheet: Outer layer: PET (thickness 12 μm), Inner layer: CPP (thickness 30 μm)
(3) Linear processed parts and fragile processed parts / top sheets are formed with carbon dioxide lasers so that two linear processed parts intersect each other at an angle of about 30 ° with a length of 30 mm. It was set as the processing part.
＜比較例１１＞・トップシートを、外層：ＰＥＴ（厚さ１２μｍ）、内層：ＬＬＤＰＥ（厚さ３０μｍ）、とした。
・それ以外は実施例６と同様として包装容器を作成した。
<Comparative Example 11> The top sheet was an outer layer: PET (thickness 12 μm) and an inner layer: LLDPE (thickness 30 μm).
-The packaging container was created similarly to Example 6 except it.
＜比較例１２＞・トップシートを、外層：ＰＥＴ（厚さ１２μｍ）、内層：ＥＰ（厚さ３０μｍ）、とした。
・それ以外は実施例６と同様として包装容器を作成した。
<Comparative example 12>-The top sheet was made into outer layer: PET (thickness 12 micrometers), inner layer: EP (thickness 30 micrometers).
-The packaging container was created similarly to Example 6 except it.
結果を表１にまとめる。 The results are summarized in Table 1.
以上説明したように、本発明の積層フィルム体およびそれを使用した包装袋、包装容器によれば、より高温での調理が必要な内容物にも適用できて内容物の選択の幅が広がり、加熱時の破断と通蒸を安定して行え、一気に破断が起こって破断の際に大きな破裂音がしたり、一気に大きな開口ができて内容物が飛び散って電子レンジの内側を汚染したりする虞のない積層フィルムおよびそれを使用した包装袋、包装容器が得られる。 As described above, according to the laminated film body of the present invention and the packaging bag and packaging container using the same, it can be applied to contents that require cooking at a higher temperature, and the range of selection of contents is widened. Breaking and steaming during heating can be performed stably, and breakage may occur at once and a loud burst sound may be generated at the time of breakage, or a large opening may be formed at once and the contents may scatter and contaminate the inside of the microwave oven Laminated film and packaging bag and packaging container using the same are obtained.
１・・・積層フィルム
２・・・包装袋
３・・・包装容器
１０・・・トップシート
１１・・・外層
１２・・・内層
１３・・・線状加工部
１４・・・脆弱加工部
１５・・・開口
１６・・・水蒸気
２０・・・ボトムシート
２１・・・シール部
３０・・・容器本体
３１・・・収納部
３２・・・フランジ部
３３・・・水
３４・・・被加熱物
３５・・・蓋材
１００・・・レーザー光源
DESCRIPTION OF SYMBOLS 1 ... Laminated film 2 ... Packaging bag 3 ... Packaging container 10 ... Top sheet 11 ... Outer layer 12 ... Inner layer 13 ... Linear processing part 14 ... Fragile processing part 15 ... Opening 16 ... Water vapor 20 ... Bottom sheet 21 ... Sealing part 30 ... Container body 31 ... Storage part 32 ... Flange part 33 ... Water 34 ... Heating Object 35 ... Cover material 100 ... Laser light source
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| JP2018022001A JP2019136930A (en) | 2018-02-09 | 2018-02-09 | Laminate film, package bag, and package container |
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| JP2018022001A JP2019136930A (en) | 2018-02-09 | 2018-02-09 | Laminate film, package bag, and package container |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| WO2024034655A1 (en) * | 2022-08-09 | 2024-02-15 | 大和製罐株式会社 | Film, package, and package with contents |
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| JP2006001550A (en) * | 2004-06-15 | 2006-01-05 | Dainippon Printing Co Ltd | Packaging body |
| KR200408265Y1 (en) * | 2005-11-30 | 2006-02-07 | 권영상 | A vacuum pouch for using microwave |
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| WO2024034654A1 (en) * | 2022-08-09 | 2024-02-15 | 大和製罐株式会社 | Film, package, and package with content therein |
| WO2024034655A1 (en) * | 2022-08-09 | 2024-02-15 | 大和製罐株式会社 | Film, package, and package with contents |
| WO2024034653A1 (en) * | 2022-08-09 | 2024-02-15 | 大和製罐株式会社 | Lid, cup container, package, and package with content therein |
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