JP5987422B2 - Packaging bag - Google Patents

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JP5987422B2
JP5987422B2 JP2012086094A JP2012086094A JP5987422B2 JP 5987422 B2 JP5987422 B2 JP 5987422B2 JP 2012086094 A JP2012086094 A JP 2012086094A JP 2012086094 A JP2012086094 A JP 2012086094A JP 5987422 B2 JP5987422 B2 JP 5987422B2
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cut line
cut
packaging bag
line
wall sheet
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JP2013216334A (en
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落合　和典
和典 落合
善孝 藤井
善孝 藤井
秀弥 高橋
秀弥 高橋
知依 平山
知依 平山
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Dai Nippon Printing Co Ltd
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本発明は、容易に引き裂いて開封することができるスタンディングタイプの包装袋であって、内容物を充填する充填工程において包装袋を開口するための吸盤装置による真空吸着開口工程更にはチャッキング装置による挟持工程において包装袋に破れが生じないスタンディングタイプの包装袋に関し、さらには、包装袋の内面の対向する位置に相互に咬合し合う雄部材と雌部材とからなる合成樹脂製の咬合具を備えることで再封機能を備えるスタンディングタイプの包装袋に関するものである。   The present invention is a standing type packaging bag that can be easily torn and opened, and a vacuum suction opening process by a suction cup device for opening the packaging bag in a filling process for filling the contents, and further by a chucking apparatus. A standing type packaging bag in which the packaging bag is not torn during the clamping process, and further includes a synthetic resin bite made of a male member and a female member that mesh with each other at opposing positions on the inner surface of the packaging bag. This relates to a standing type packaging bag having a resealing function.

従来から、三方シールタイプや四方シールタイプ、あるいは、スタンディングタイプの包装袋において、包装袋を構成する表側の積層体の外層に、左側端縁熱接着部の外縁を起点とし、右側端縁熱接着部の外縁を終点（起点と終点の上下方向［左右の側端縁熱接着部に平行な方向］の位置が同じ）として連続する第１切目線を形成し、包装袋を構成する裏側の積層体の外層に、左側端縁熱接着部の外縁を起点とし、右側端縁熱接着部の外縁を終点（起点と終点の上下方向［左右の側端縁熱接着部に平行な方向］の位置が同じ）として連続する第２切目線を形成し、かつ第１切目線と第２切目線に沿って包装袋の上端側を左右方向（左右の側端縁熱接着部に直交する方向）に引裂き開口した際に、第１切目線と第２切目線に沿った所望の形状の表側の積層体の切断面の外郭と裏側の積層体の切断面の外郭とが異なるように正確に切目線を形成せしめることで、手指等で容易に開口することができ、内容物のスムーズな取り出しを可能とした包装袋が提案されている（たとえば、特許文献１参照）。   Conventionally, in three-side seal type, four-side seal type or standing type packaging bags, the outer edge of the left side thermal bonding part is used as the starting point for the outer layer of the front side laminate that constitutes the packaging bag. The back edge of the packaging bag is formed by forming a continuous first cut line with the outer edge of the part as the end point (the vertical direction of the start point and the end point is the same in the direction parallel to the left and right side edge thermal bonding portions). On the outer layer of the body, the outer edge of the left edge thermal bonding part is the starting point, and the outer edge of the right edge thermal bonding part is the end point (vertical direction of the starting point and end point [direction parallel to the left and right side edge thermal bonding parts]] Are formed in the same direction as the second cut line, and the upper end side of the packaging bag in the left-right direction along the first cut line and the second cut line (in the direction orthogonal to the left and right side edge thermal bonding portions). When the tear opening is made, the desired shape along the first cut line and the second cut line By forming the cut line accurately so that the outline of the cut surface of the laminate on the side and the outline of the cut surface of the laminate on the back side are different, it can be easily opened with fingers, etc. A packaging bag that can be taken out has been proposed (see, for example, Patent Document 1).

さらに、包装袋を引裂き開口した際に第１切目線の切断面の外郭と第２切目線の切断面の外郭とが異なるように正確に切目線を形成することができ、手指等で容易に開口することができ、内容物のスムーズな取り出しを可能とした包装袋であって、再封機能を備えた包装袋も提案されている（たとえば、特許文献２参照）。   Furthermore, when the packaging bag is torn open, the cut line can be accurately formed so that the outline of the cut surface of the first cut line is different from the outline of the cut surface of the second cut line, and can be easily formed with fingers or the like. There has also been proposed a packaging bag that can be opened and has a resealing function that enables smooth removal of contents (see, for example, Patent Document 2).

ここで、なお、包装袋というものは、一部の端縁に未シールの開口部を備えた状態の袋体（密封されていない点で完全な包装袋と区別するために「袋体」と称する）を作成し、この袋体を、内容物を充填する工程を行う食品メーカー等に納め、食品メーカー等において、この袋体に食品等の内容物を開口部から充填しつつ、充填後の内容物の収納された袋体の開口部つまり未シール部に最終的なシールを行うことで、完全に封緘するものである。ここで、三方シールタイプの包装袋や、引用文献１あるいは引用文献２に記載された包装袋のように、四方シールタイプの包装袋では、包装袋の開口部つまり未シール部を上端縁あるいは下端縁いずれにも設定することが可能であり、たとえ、引用文献１あるいは引用文献２に記載された包装袋のように、表側の積層体あるいは裏側の積層体にイレギュラーな構成とも言える第１切目線や第２切目線を包装袋の上端寄りに備える場合であっても、下端縁に開口部を設定した袋体を作成しておけば、食品メーカー等にて食品等の内容物の充填及び開口部のヒートシール時において第１切目線や第２切目線に影響（損傷）を与えることなく製造することができる。   Here, the packaging bag is a bag body with an unsealed opening at a part of the edge (“bag body” to distinguish it from a complete packaging bag in that it is not sealed). And the bag body is placed in a food maker that performs a process of filling the contents, and the food maker or the like fills the bag body with contents such as food from the opening, A final seal is applied to the opening, that is, the unsealed portion of the bag body in which the contents are stored, thereby completely sealing. Here, in a four-side seal type packaging bag, such as a three-side seal type packaging bag or a packaging bag described in Cited Document 1 or Cited Document 2, the opening portion of the packaging bag, that is, the unsealed portion is defined as the upper edge or the lower edge. It can be set at any edge. For example, as in the packaging bag described in the cited document 1 or the cited document 2, the first cut can be said to be an irregular structure in the front side laminate or the back side laminate. Even if a line of sight and a second cut line are provided near the upper end of the packaging bag, if a bag body having an opening at the lower end edge is prepared, the food manufacturer etc. It can be manufactured without affecting (damaging) the first cut line and the second cut line during the heat sealing of the opening.

しかし、スタンディングタイプの包装袋に関しては、下部構造が山折りした底壁シートを備える点で三方シールタイプの包装袋や四方シールタイプの包装袋と大きく異なっており、スタンディングタイプの包装袋の下端縁に開口部を設定した場合、具体的には上端縁と左右の側端縁の三方をヒートシールした袋体の底部側から内容物を充填した後に、山折りした底壁シートを挿入してヒートシールして底部端縁熱接着部を形成することで封緘を行うことは略不可能である。したがって、スタンディングタイプの包装袋においては、第１切目線や第２切目線を備える上端縁側に開口部を形成し、この上端縁の開口部から内容物を充填した後に、上端縁側の開口部をヒートシールして上部端縁熱接着部を形成することで封緘を行うしかない。ここで、充填工程においては、充填機に供給される袋体は開口部側の前壁シートと後壁シートが未シール状態ではあるが密着した状態であるので、この密着した開口部側の前壁シートと後壁シートの遊端縁（上端縁）近傍の幅方向における中央部をそれぞれ吸盤装置で吸着して離間する方向に引っ張って隙間（内容物を充填する開口）を形成し、この隙間から食品等の内容物を充填する必要がある。更に、相互に咬合し合う雄部材と雌部材とからなる合成樹脂製の咬合具を袋の上端側に備えることで再封機能を付与した包装袋においては、密着した開口部側の前壁シートと後壁シートの遊端縁（上端縁）近傍をそれぞれ吸盤装置で吸着して離間する方向に引っ張って、離間した前壁シートと後壁シートの遊端縁（上端縁）を、それぞれ、２枚の板材で挟み込むチャッキング装置（前壁シート用と後壁シート用の２セット有り）で挟持して、離間した前壁シートと後壁シートの遊端縁（上端縁）を更に離間させることで、相互に咬合し合う咬合具の雄部材と雌部材を引き離す方向に引っ張って、咬合具より下側（底壁シート側）の収納空間に通じる隙間（内容物を充填する開口）を形成する必要がある。   However, the standing type packaging bag differs greatly from the three-side seal type packaging bag and the four-side seal type packaging bag in that the lower structure is provided with a folded bottom wall sheet. Specifically, after filling the contents from the bottom side of the bag body heat-sealed on the three sides of the upper edge and the left and right side edges, insert the folded bottom wall sheet and heat it. It is almost impossible to seal by forming a bottom edge thermal bonding portion by sealing. Therefore, in a standing type packaging bag, an opening is formed on the upper edge side having the first cut line and the second cut line, and after filling the contents from the opening of the upper edge, the opening on the upper edge side is formed. There is no choice but to seal by forming the upper edge thermal bonding part by heat sealing. Here, in the filling process, since the bag body supplied to the filling machine is in an intimate contact state, the front wall sheet and the rear wall sheet on the opening side are in an unsealed state. A central portion in the width direction near the free edge (upper edge) of the wall sheet and the rear wall sheet is attracted by a suction cup device and pulled away to form a gap (opening for filling the contents). It is necessary to fill contents such as food. Further, in a packaging bag provided with a resealing function by providing a synthetic resin occlusion device composed of a male member and a female member that are engaged with each other on the upper end side of the bag, the front wall sheet on the side of the opening that is closely attached And the vicinity of the free edge (upper edge) of the rear wall sheet are sucked by a suction cup device and pulled in a direction away from each other, and the free edge (upper edge) of the separated front wall sheet and rear wall sheet is set to 2 respectively. Hold by a chucking device (two sets for front wall sheet and rear wall sheet) sandwiched by a single plate material, and further separate the free edge (upper edge) of the separated front wall sheet and rear wall sheet Then, by pulling the male member and female member of the occlusion device that are engaged with each other in a direction to separate them, a gap (opening for filling the contents) leading to the storage space below the occlusion device (bottom wall sheet side) is formed. There is a need.

しかし、スタンディングタイプの包装袋において、包装袋を構成する表裏の積層体に切目線を形成することで、手指等で容易に且つ切目線に沿わすことで所望の形状を成すように引裂くことは達成しているが、本来的に切目線を備えることによるデメリット、つまり、包装袋を構成する前壁シートと後壁シートが外部からの力に対し脆弱になる可能性が高くなることは否めない。   However, in a standing type packaging bag, by forming a score line in the laminate on the front and back sides of the packaging bag, it can be easily torn along with the finger line to form the desired shape. Has been achieved, but the disadvantage of having a score line inherently, that is, the possibility that the front wall sheet and the rear wall sheet constituting the packaging bag are likely to be vulnerable to external force is denied. Absent.

しかも、スタンディングタイプの包装袋においては、上述したように、このような切目線が招来する本来的なデメリットは、充填工程において顕著になる。すなわち、充填工程において、密着した開口部側の前壁シートと後壁シートの遊端縁（上端縁）近傍をそれぞれ吸盤装置で真空吸着して離間する方向に引っ張って隙間（内容物を充填する開口）を形成する際に、袋体そのものが切目線（脆弱箇所）の吸着を行う中央部から破れが発生することが懸念される。更に、咬合具を備えることで再封機能を付与した包装袋においては、密着した開口部側の前壁シートと後壁シートの遊端縁（上端縁）近傍をそれぞれ吸盤装置で真空吸着して離間する方向に引っ張って、離間した前壁シートと後壁シートの遊端縁（上端縁）を、それぞれ、２枚の板材で挟み込むチャッキング装置（前壁シート用と後壁シート用の２セット有り）で挟持して、離間した前壁シートと後壁シートの遊端縁（上端縁）を更に離間させることで、相互に咬合し合う咬合具の雄部材と雌部材を引き離す方向に引っ張って、咬合具より下側（底壁シート側）の収納空間に通じる隙間（内容物を充填する開口）を形成する際に、袋体そのものが切目線（脆弱箇所）の吸着を行う中央部及びチャッキング装置の挟持により破れが発生することがより一層懸念される。したがって、包装袋に内容物を取り出す際の開口を容易且つ正確に形成するための切目線であっても、内容物を充填する充填工程において包装袋を開口するための吸盤装置による真空吸着開口工程更にはチャッキング装置による挟持工程における隙間（内容物を充填する開口）形成にて切目線から破れる可能性を出来る限り低減して、良好な充填・封緘まで確保することが望まれている。   Moreover, in the standing type packaging bag, as described above, the inherent disadvantage that such a cut line is caused becomes significant in the filling process. That is, in the filling process, the vicinity of the free edge (upper edge) of the front wall sheet and the rear wall sheet on the side of the close-contacted opening is vacuum-sucked by the suction cup device and pulled in the direction of separation to fill the gap (contents). When forming the (opening), there is a concern that the bag itself may be torn from the central portion where the cut line (fragile portion) is adsorbed. Furthermore, in a packaging bag provided with a resealing function by providing an occlusal tool, the vicinity of the free edge (upper edge) of the front wall sheet and the rear wall sheet on the side of the close-contacted opening is vacuum-sucked by a suction cup device. A chucking device (two sets for the front wall sheet and the rear wall sheet) that pulls in the separating direction and sandwiches the free edge (upper edge) of the separated front wall sheet and rear wall sheet with two plate materials, respectively. By pulling in the direction to separate the male member and female member of the occlusion device that are engaged with each other by further separating the free edge (upper edge) of the separated front wall sheet and rear wall sheet. When forming a gap (opening for filling the contents) leading to the storage space below the bite (bottom wall sheet side), the bag itself absorbs the cut line (fragile part) and the chuck. Torn by holding the king device More is more concern. Therefore, the vacuum suction opening process by the suction cup device for opening the packaging bag in the filling process for filling the contents, even if it is a score line for easily and accurately forming the opening when taking the contents into the packaging bag Furthermore, it is desired to reduce the possibility of breaking from the score line as much as possible by forming a gap (opening for filling the contents) in the clamping process by the chucking device, and to ensure good filling and sealing.

そこで、本発明者は、充填機での充填工程において吸盤装置による真空吸着開口工程更にはチャッキング装置による挟持工程における隙間（内容物を充填する開口）形成にて切目線から破れるのは、真空吸着される更には挟持される中央部分（約１〜２ｃｍ程度）の領域の切目線で発生している点に着目し、さらに、開封時の実際の引裂き線が形成されるメカニズムを分析した結果、包装袋の第１切目線と第２切目線においては、一端引裂きが開始されると、途中で切れ難い箇所を設けても引裂き自体はスムーズに進行する点にも着目し、第１切目線と第２切目線の中央の切目線の中央部分（約１〜２ｃｍ程度）の領域を、その他の領域と比較して相対的に引き裂き強度を高くする、つまり切れ難い状態とすることで、良好な引き裂き開口性を保持しつつ充填機での吸盤装置による真空吸着開口工程更にはチャッキング装置による挟持工程における隙間（内容物を充填する開口）形成にて切目線から破れることを防止できる、すなわち、上記包装袋に内容物を取り出す際の開口を容易且つ正確に形成するための工夫に伴うデメリットを低減できるとの知見を得ている。   In view of this, the present inventor found that in the filling process in the filling machine, the vacuum suction opening process by the suction cup device and the gap (opening for filling the contents) in the clamping process by the chucking device are broken from the score line by the vacuum. The result of analyzing the mechanism that the actual tear line at the time of opening is formed, paying attention to the point that occurs at the cut line in the region of the center part (about 1-2 cm) to be adsorbed and further sandwiched In the first cut line and the second cut line of the packaging bag, pay attention to the point that when the one-end tearing is started, the tear itself proceeds smoothly even if a difficult-to-break part is provided on the way. It is good by making the tear strength relatively high compared to other regions, that is, making it difficult to break the region of the central portion (about 1-2 cm) of the center of the second cut line and the second cut line Tear opening While holding, it can be prevented from being broken from the score line by forming a gap (opening for filling the contents) in the vacuum suction opening process by the sucker device in the filling machine and further by the chucking process by the chucking device. The knowledge that the demerit accompanying the device for forming the opening at the time of taking out the contents easily and accurately can be reduced has been obtained.

特開２００５−２８９３９６号公報JP 2005-289396 A 特開２００３−１０４３９４号公報JP 2003-104394 A

本発明は、手指等で容易に且つ切目線に沿わすことで所望の形状を成すように正確に引裂くことができる外層とアルミニウム箔からなる中間層と熱接着性樹脂からなる内層とを少なくとも備える積層体からなるスタンディングタイプの包装袋であって、包装袋を構成する表裏の積層体に形成する切目線を工夫することにより、手指等で容易に引裂くことができて内容物を取り出す際の開口を容易且つ正確に形成できるスタンディングタイプの包装袋を提供することを第一の課題とする。   The present invention comprises at least an outer layer that can be easily torn along a score line with fingers or the like so as to form a desired shape, an intermediate layer made of aluminum foil, and an inner layer made of a thermoadhesive resin. It is a standing type packaging bag made of a laminated body, and it can be easily torn with fingers etc. to take out the contents by devising the cut line formed in the front and back laminated body constituting the packaging bag It is a first object to provide a standing type packaging bag that can easily and accurately form the opening.

さらに、充填機での吸盤装置による真空吸着開口工程更にはチャッキング装置による挟持工程における隙間（内容物を充填する開口）形成にて破れることを防止できるスタンディングタイプの包装袋を提供することを第二の課題とする。   Furthermore, it is a first object of the present invention to provide a standing type packaging bag that can be prevented from being broken by forming a gap (opening for filling contents) in a vacuum suction opening process by a suction device in a filling machine and further in a clamping process by a chucking device. Let's assume the second issue.

さらに、包装袋の内面の対向する位置に、相互に咬合し合う雄部材と雌部材とからなる合成樹脂製の咬合具を備えることで再封機能を備えるスタンディングタイプの包装袋を提供することを第三の課題とする。   Furthermore, to provide a standing type packaging bag having a resealing function by providing a synthetic resin occlusion device composed of a male member and a female member that are engaged with each other at opposing positions on the inner surface of the packaging bag. This is the third issue.

本発明者は、上記課題を達成するために、請求項１記載の本発明は、外層とアルミニウムからなる中間層と熱接着性樹脂からなる内層とを少なくとも有する積層体からなる前壁シートと後壁シートの内層面を対向して配置し、当該前壁シートと後壁シートの下端部に熱接着性樹脂からなる内層を少なくとも有する積層体からなる底壁シートを内層面を外面にして中央で山折りして挿入し、前記前壁シートの内層面と前記後壁シートの内層面に対して対向する山折りした前記底壁シートの外面とを前記底壁シートの周縁部にてヒートシールして底部熱接着部を形成し、前記前壁シートの内層面に対向する前記後壁シートの内層面同士を左右の側端縁をヒートシールして左右の側端縁熱接着部を形成してなる包装袋であって、前記前壁シートの外層に、左右方向に第１の切目線を形成し、前記後壁シートの外層に、左右方向に第２の切目線を形成し、前記第１切目線と前記第２切目線に沿って前記包装袋の上端側を左右方向に引裂き開口した際に、前記前壁シートの切断面の外郭と前記後壁シートの切断面の外郭とにより引裂き開口部を形成する包装袋であって、前記第１切目線に沿った前記前壁シートの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定され、前記第２切目線に沿った前記後壁シートの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定されている、ことを特徴とするものである。   In order to achieve the above object, the inventor of the present invention provides a front wall sheet comprising a laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin, and a rear wall. The inner wall surface of the wall sheet is arranged to face the bottom wall sheet made of a laminate having at least an inner layer made of a heat-adhesive resin at the lower end of the front wall sheet and the rear wall sheet. The inner wall surface of the front wall sheet and the outer surface of the mountain wall bottom wall sheet facing the inner layer surface of the rear wall sheet are heat-sealed at the peripheral edge of the bottom wall sheet. Forming a bottom thermal bonding portion and heat sealing the left and right side edges of the inner wall surfaces of the rear wall sheet facing the inner wall surface of the front wall sheet to form left and right side edge thermal bonding portions. A packaging bag comprising: outside the front wall sheet A first cut line is formed in the left-right direction, a second cut line is formed in the left-right direction on the outer layer of the rear wall sheet, and the packaging is formed along the first cut line and the second cut line. A packaging bag in which a tear opening is formed by an outline of a cut surface of the front wall sheet and an outline of a cut surface of the rear wall sheet when the upper end side of the bag is opened in the left-right direction. The tear strength of the central portion of the front wall sheet along the score line is set to be relatively higher than the tear strength of the other portions, and the tear strength of the central portion of the rear wall sheet along the second score line Is set to be relatively higher than the tear strength of the other portions.

また、請求項２記載の本発明は、請求項１に記載の包装袋において、前記包装袋の中央部分における前記第１切目線と前記第２切目線の深度が包装袋の中央部分以外の部分における前記第１切目線と前記第２切目線の深度よりも浅い、ことを特徴とするものである。   Further, the present invention according to claim 2 is the packaging bag according to claim 1, wherein the depth of the first cut line and the second cut line in the central portion of the packaging bag is a portion other than the central portion of the packaging bag. It is characterized by being shallower than the depth of the first cut line and the second cut line.

また、請求項３記載の本発明は、請求項１に記載の包装袋において、前記包装袋の中央部分における前記第１切目線と前記第２切目線がカット部とアンカット部が交互に配置されており、前記包装袋の中央部分以外の部分における前記第１切目線と前記第２切目線がカット部のみが連続して配置されている、ことを特徴とするものである。   Moreover, the present invention according to claim 3 is the packaging bag according to claim 1, wherein the first cut line and the second cut line in the central portion of the packaging bag are alternately arranged with cut portions and uncut portions. Only the cut part is continuously arranged in the first cut line and the second cut line in a part other than the central part of the packaging bag.

また、請求項４記載の本発明は、請求項１乃至請求項３のいずれかに記載の包装袋において、前記第１切目線と第２切目線より下端側の包装袋の内面の対向する位置に、相互に咬合し合う凸条の雄部材と凹条の雌部材とからなる合成樹脂製の咬合具が設けられ、前記雄部材と前記雌部材とを咬合することで再封機能を備えることを特徴とするものである。   Further, the present invention according to claim 4 is the packaging bag according to any one of claims 1 to 3, wherein the inner surface of the packaging bag at the lower end side from the first cut line and the second cut line is opposed to the inner surface. A synthetic resin occlusion device comprising a protruding male member and a concave female member that are engaged with each other, and has a resealing function by engaging the male member and the female member. It is characterized by.

かかる発明によれば、包装袋の第１切目線を備える面を手前に向けて、第１切目線より上端側の領域を手指で摘んで手前に引裂く、逆に、第１切目線より上端側の領域を摘んで奥側に引裂くと、包装袋の上端側の領域を構成する前壁シートは第１切目線に沿って、後壁シートは第２切目線に沿って引裂き線が形成されるので、切目線に追従した所望の形状に容易に引裂くことができる。   According to this invention, the surface provided with the first cut line of the packaging bag is directed toward the front, the region on the upper end side from the first cut line is picked with fingers, and the upper end is cut from the first cut line. When the side region is picked and torn to the back side, the front wall sheet constituting the upper end region of the packaging bag forms a tear line along the first cut line, and the rear wall sheet forms a tear line along the second cut line. Therefore, it can be easily torn into a desired shape following the score line.

さらに、第１切目線と前記第２切目線に沿った包装袋の中央部分の引裂強度を高く（引裂き難く）しているので、充填機での吸盤装置による真空吸着開口工程更にはチャッキング装置による挟持工程における隙間（内容物を充填する開口）形成にて破れることを防止できる。   Furthermore, since the tear strength of the central portion of the packaging bag along the first cut line and the second cut line is increased (hard to tear), the vacuum suction opening process by the suction cup device in the filling machine and further the chucking device Can be prevented from being broken by forming a gap (opening for filling the contents) in the clamping step.

さらに、その引裂き難い中央部分の両脇に連接するそれ以外の部分の引裂強度が低く（引裂き易く）設定されているので、中央部分で引裂きが途切れることがない。   Further, since the tear strength of the other portions connected to both sides of the central portion that is difficult to tear is set low (easier to tear), the tear is not interrupted at the central portion.

さらに、包装袋の前記切目線の下端側の包装袋の内面の対向する位置に、相互に咬合し合う凸条の雄部材と凹条の雌部材とからなる合成樹脂製の咬合具を備えており、前記雄部材と前記雌部材とを咬合することで再封機能を備える包装袋とすることができる。   Furthermore, a synthetic resin occlusion device comprising a protruding male member and a concave female member that mesh with each other is provided at a position opposite to the inner surface of the packaging bag on the lower end side of the cut line of the packaging bag. And it can be set as the packaging bag provided with a resealing function by biting the said male member and the said female member.

本発明にかかる包装袋の切目線と咬合具の位置関係を図解的に示す平面図である。It is a top view which shows diagrammatically the positional relationship of the cut line of the packaging bag concerning this invention, and an occlusion tool. 図１のＸ−Ｘ線断面を図解的に示す図である。It is a figure which shows the XX sectional view of FIG. 図１のＹ−Ｙ線断面を図解的に示す図であって、本発明にかかる包装袋に形成する切目線の第１〜第４実施形態を図解的に示す要部断面図である。It is a figure which shows the YY line cross section of FIG. 1 schematically, Comprising: It is principal part sectional drawing which shows the 1st-4th embodiment of the score line formed in the packaging bag concerning this invention. 本発明にかかる包装袋に形成する切目線の第１実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows diagrammatically 1st Embodiment of the score line formed in the packaging bag concerning this invention. （ａ）は図４のＺ−Ｚ線断面を図解的に示す図，（ｂ）は図４のＷ−Ｗ線断面を図解的に示す図である。(A) is a figure which shows the ZZ line cross section of FIG. 4 schematically, (b) is a figure which shows the WW line cross section of FIG. 4 schematically. 本発明にかかる包装袋に形成する切目線の第２実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows diagrammatically 2nd Embodiment of the score line formed in the packaging bag concerning this invention. 本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第３実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows diagrammatically 3rd Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention. 本発明にかかる包装袋に形成する切目線にＵ字状の切欠を組み合わせた第４実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows diagrammatically 4th Embodiment which combined the U-shaped notch with the score line formed in the packaging bag concerning this invention. 図４に示す包装袋の一方の側端縁熱接着部を残した状態の開封図である。It is an opening figure of the state which left one side edge thermal adhesive part of the packaging bag shown in FIG. 図１のＹ−Ｙ線断面を図解的に示す図であって、本発明にかかる包装袋に形成する切目線の第５〜第９実施形態を図解的に示す要部断面図である。It is a figure which shows the YY line cross section of FIG. 1 schematically, Comprising: It is principal part sectional drawing which shows the 5th-9th embodiment of the score line formed in the packaging bag concerning this invention. 本発明にかかる包装袋に形成する切目線の第５実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows diagrammatically 5th Embodiment of the score line formed in the packaging bag concerning this invention. （ａ）は図１１のＺ−Ｚ線断面を図解的に示す図，（ｂ）は図１１のＷ−Ｗ線断面を図解的に示す図である。(A) is a figure which shows the ZZ line | wire cross section of FIG. 11 schematically, (b) is a figure which shows the WW line cross section of FIG. 11 schematically. 本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第６実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows 6th Embodiment which combined V-shaped notch with the cut line formed in the packaging bag concerning this invention. 本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第７実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows 7th Embodiment which combined V-shaped notch with the cut line formed in the packaging bag concerning this invention. 本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第８実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows 8th Embodiment which combined V-shaped notch with the cut line formed in the packaging bag concerning this invention. 本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第９実施形態を図解的に示す手前側から見た要部平面図である。It is the principal part top view seen from the near side which shows diagrammatically 9th Embodiment which combined the V-shaped notch with the cut line formed in the packaging bag concerning this invention.

上記の本発明について、図面等を用いて以下に詳述する。なお、本段落においては、符号を付した構成について、特許請求の範囲に規定する構成要件との対応関係を括弧書きで解説的に示す。
図１は本発明にかかる包装袋の切目線と咬合具の位置関係を図解的に示す平面図、図２は図１のＸ−Ｘ線断面を図解的に示す図、図３は図１のＹ−Ｙ線断面を図解的に示す図であって、本発明にかかる包装袋に形成する切目線の第１〜第４実施形態を図解的に示す要部断面図、図４は本発明にかかる包装袋に形成する切目線の第１実施形態を図解的に示す手前側から見た要部平面図、図５（ａ）は図４のＺ−Ｚ線断面を図解的に示す図，図５（ｂ）は図４のＷ−Ｗ線断面を図解的に示す図、図６は本発明にかかる包装袋に形成する切目線の第２実施形態を図解的に示す手前側から見た要部平面図、図７は本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第３実施形態を図解的に示す手前側から見た要部平面図、図８は本発明にかかる包装袋に形成する切目線にＵ字状の切欠を組み合わせた第４実施形態を図解的に示す手前側から見た要部平面図、図９は図４に示す包装袋の一方の側端縁熱接着部を残した状態の開封図、図１０は図１のＹ−Ｙ線断面を図解的に示す図であって、本発明にかかる包装袋に形成する切目線の第５〜第９実施形態を図解的に示す要部断面図、図１１は本発明にかかる包装袋に形成する切目線の第５実施形態を図解的に示す手前側から見た要部平面図、図１２（ａ）は図１１のＺ−Ｚ線断面を図解的に示す図、図１２（ｂ）は図１１のＷ−Ｗ線断面を図解的に示す図、図１３は本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第６実施形態を図解的に示す手前側から見た要部平面図、図１４は本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第７実施形態を図解的に示す手前側から見た要部平面図、図１５は本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第８実施形態を図解的に示す手前側から見た要部平面図、図１６は本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第９実施形態を図解的に示す手前側から見た要部平面図であり、図中の１は包装袋、２は端縁熱接着部、２Ａは左側端縁熱接着部、２Ｂは右側端縁熱接着部、２Ｃは底部端縁熱接着部、２Ｄは上部端縁熱接着部、３は第１切目線、３’は第２切目線、５は切欠部、１０Ａは前壁用積層体（前壁シート）、１０Ｂは後壁用積層体（後壁シート）、１０Ｃは底壁用積層体（底壁シート）、１１は外層、１２は中間層、１３は内層、２０は合成樹脂製の咬合具、２１は凸条の雄部材、２２は凹条の雌部材、３０Ａは第１―１起点側収斂状切目線（第１の切目線・起点側の外寄りを構成する複数本の切目線）、３０Ｂは第１―１終点側収斂状切目線（第１の切目線・終点側の外寄りを構成する複数本の切目線）、３０Ｃは第１―２起点側直線状切目線（第１の切目線・起点側の内寄りを構成する一本の切目線）、３０Ｄは第１―２終点側直線状切目線（第１の切目線・終点側の内寄りを構成する一本の切目線）、３０Ｅ，３０Ｇは第１―３上端側切目線（第１の切目線・中央側を構成する上下２本の切目線・上端側に膨れる切目線）、３０Ｆ，３０Ｈは第１―３下端側切目線（第１の切目線・中央側を構成する上下２本の切目線・下端側に膨れる切目線）、３０Ｉは第１−２中央直線状切目線（第１の切目線・中央側を構成する１本の切目線）、３１Ａは第２―１起点側収斂状切目線（第２の切目線・起点側の外寄りを構成する複数本の切目線）、３１Ｂは第２―１終点側収斂状切目線（第２の切目線・終点側の外寄りを構成する複数本の切目線）、３１Ｃは第２−２起点側直線状切目線（第２の切目線・中央側の一本の切目線の一部）、３１Ｄは第２−２終点側直線状切目線（第２の切目線・中央側の一本の切目線の一部）、３１Ｅは第２−３中央側直線状切目線（第２の切目線・中央側の一本の切目線の一部）、３１Ｊは第２−２中央直線状切目線（第２の切目線・中央側を構成する１本の切目線）、Ｎ１はＶ字状の切欠、Ｎ２はＵ字状の切欠、αは切目線形成領域、βは咬合具形成領域、γはガセット領域をそれぞれ示す。 The above-described present invention will be described in detail below with reference to the drawings. In addition, in this paragraph, the correspondence relationship between the components with the reference numerals and the component requirements defined in the claims is described in parentheses.
1 is a plan view schematically showing the positional relationship between the cut line and the bite of the packaging bag according to the present invention, FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. 1, and FIG. It is a figure which shows a YY line cross section, Comprising: It is principal part sectional drawing which shows the 1st-4th embodiment of the score line formed in the packaging bag concerning this invention, FIG. The principal part top view seen from the near side which shows diagrammatically 1st Embodiment of the cut line formed in this packaging bag, FIG.5 (a) is a figure which shows the ZZ line | wire cross section of FIG. 5 (b) is a diagram schematically showing a cross section taken along the line W-W in FIG. 4, and FIG. 6 is a schematic view of the second embodiment of the cut line formed in the packaging bag according to the present invention as viewed from the front side. FIG. 7 is a fragmentary plan view, FIG. 7 is a fragmentary plan view of a third embodiment in which a V-shaped cutout is combined with a cut line formed in a packaging bag according to the present invention, and FIG. The principal part top view seen from the near side which shows diagrammatically 4th Embodiment which combined the U-shaped notch with the score line formed in the packaging bag concerning clearly, FIG. 9 is one side of the packaging bag shown in FIG. FIG. 10 is a diagram schematically showing a cross-section taken along line YY of FIG. 1, with the side edge thermal bonding portion left, and the fifth through fifth cut lines formed in the packaging bag according to the present invention. FIG. 11 is a sectional view of a principal part schematically showing the ninth embodiment, FIG. 11 is a plan view of the principal part seen from the front side schematically showing the fifth embodiment of the score line formed in the packaging bag according to the present invention, and FIG. (A) is a diagram schematically showing a cross section taken along the line ZZ in FIG. 11, FIG. 12 (b) is a diagram schematically showing a cross section taken along the line WW in FIG. 11, and FIG. 13 shows the packaging bag according to the present invention. The principal part top view seen from the near side which shows diagrammatically 6th Embodiment which combined the V-shaped notch with the cut line to form, FIG. 14 is the packaging concerning this invention FIG. 15 is a plan view of an essential part seen from the front side schematically illustrating a seventh embodiment in which a V-shaped notch is combined with a cut line formed in FIG. 15, and FIG. 15 is a V-shaped cut line formed in the packaging bag according to the present invention. The principal part top view seen from the near side which shows 8th Embodiment which combined the shape-like notch from the near side, FIG. 16 is 9th which combined the V-shaped notch with the score line formed in the packaging bag concerning this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a principal part top view seen from the near side which shows embodiment schematically, 1 in a figure is a packaging bag, 2 is an edge thermal bonding part, 2A is a left edge thermal bonding part, 2B is a right edge thermal Bonding part, 2C is a bottom edge thermal bonding part, 2D is a top edge thermal bonding part, 3 is a first cut line, 3 'is a second cut line, 5 is a notch part, 10A is a front wall laminate (front 10B is a laminate for the rear wall (rear wall sheet), 10C is a laminate for the bottom wall (bottom wall sheet), 11 is the outer layer, 12 is the intermediate layer, 13 Inner layer, 20 is a synthetic resin bite, 21 is a convex male member, 22 is a concave female member, and 30A is a first-first origin side converging cut line (outside the first cut line / start side) 30B is a first-end end side convergent cut line (a plurality of cut lines constituting the outer side of the first cut line / end point side), and 30C is the first- 2 start side straight cut line (1st cut line / one cut line constituting the inward side of start point), 30D is 1-2 end point straight cut line (first cut line / end side) 30E and 30G are the first to third upper end side cut lines (the first cut line and the upper and lower two cut lines that constitute the center side, and the cut line that swells to the upper end side. ), 30F, 30H are first to third lower end side cut lines (first cut line, upper and lower two cut lines constituting the center side, cut lines bulging to the lower end side), 30I is the first cut line 1-2 Central straight cut line (first cut line / one cut line constituting the central side), 31A is a 2-1 start point side converged cut line (the second cut line / start side outside) A plurality of cut lines constituting a shift), 31B is a 2-1 end point side converged cut line (a plurality of cut lines forming a second cut line / end point side outward), and 31C is a second line 2 Start-point-side linear cut line (second cut line / part of one central cut line), 31D is 2-2 end-point-side straight cut line (second cut line / center-side one Part of the cut line), 31E is the second-third central straight cut line (second cut line / part of one central cut line), 31J is the second-second central straight line Cut line (second cut line / one cut line constituting the center side), N1 is a V-shaped cutout, N2 is a U-shaped cutout, α is a cut line forming region, β is a bite forming region , Γ is the gusset area It is shown, respectively.

図１は本発明にかかる包装袋の切目線と咬合具の位置関係を図解的に示す平面図、図２は図１のＸ−Ｘ線断面を図解的に示す図、図３は図１のＹ−Ｙ線断面を図解的に示す図であって、本発明にかかる包装袋に形成する切目線の第１〜第４実施形態を図解的に示す要部断面図であり、包装袋１は外層１１とアルミニウム箔からなる中間層１２と熱接着性樹脂層からなる内層１３とを積層した３枚の矩形状の積層体である前壁用積層体１０Ａと後壁用積層体１０Ｂと底壁用積層体１０Ｃを準備し、前壁用積層体１０Ａと後壁用積層体１０Ｂの内層１３同士を対向して配置し、前壁用積層体１０Ａと後壁用積層体１０Ｂの下端部に底壁用積層体１０Ｃを内層１３を外面にして中央で山折りして挿入し、ガセット領域γを有する形式に形成されており、山折りされた底壁用積層体１０Ｃの左右の側端縁の下部近傍には、略半円形状の底壁用積層体１０Ｃの切欠部５，５が設けられ、ガセット領域γがヒートシールされ、周縁部を含む船底型の底部端縁熱接着部２Ｃで底部が形成される。また、前壁用積層体１０Ａと後壁用積層体１０Ｂの左右の側端縁部をヒートシールして左側端縁熱接着部２Ａ、右側端縁熱接着部２Ｂで胴部が形成され、上端部が開口する袋状に形成されている。上部端縁熱接着部２Ｄは、内容物の充填前は未シールの開口部とし、この部分から内容物を充填した後、脱気シールなどによりヒートシールして密封するものであり、スタンディングタイプの包装袋とされるものを構成している。また、包装袋１の上部には後述する易開封手段と総称できる各種手段（第１切目線３、第２切目線３’、Ｖ字状の切欠、Ｕ字状の切欠）が設けられている。さらに、易開封手段と総称できる各種手段（第１切目線３、第２切目線３’、Ｖ字状の切欠、Ｕ字状の切欠）の近傍下側には咬合具２０が易開封手段と総称できる各種手段（第１切目線３、第２切目線３’、Ｖ字状の切欠、Ｕ字状の切欠）に平行に前壁用積層体１０Ａと後壁用積層体１０Ｂの内層１３に設けられている。   1 is a plan view schematically showing the positional relationship between the cut line and the bite of the packaging bag according to the present invention, FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. 1, and FIG. It is a figure which shows a YY line cross section, Comprising: It is principal part sectional drawing which shows the 1st-4th embodiment of the score line formed in the packaging bag concerning this invention, The packaging bag 1 is A laminate 10A for a front wall, a laminate 10B for a rear wall, and a bottom wall, which are three rectangular laminates in which an outer layer 11, an intermediate layer 12 made of aluminum foil, and an inner layer 13 made of a heat-adhesive resin layer are laminated. A laminated body 10C is prepared, the inner layers 13 of the front wall laminated body 10A and the rear wall laminated body 10B are arranged to face each other, and the bottoms of the front wall laminated body 10A and the rear wall laminated body 10B are placed at the bottom. The wall laminate 10C is inserted into the center layer 13 with the inner layer 13 as the outer surface and folded in the middle to form a gusset region γ. In the vicinity of the lower portions of the left and right side edges of the folded bottom wall laminate 10C, notches 5 and 5 of the substantially semicircular bottom wall laminate 10C are provided, and the gusset region γ is heat-sealed. Then, the bottom portion is formed by the bottom edge thermal bonding portion 2C of the ship bottom type including the peripheral edge portion. Also, the left and right side edge portions of the front wall laminate 10A and the rear wall laminate 10B are heat-sealed to form a body portion with the left edge thermal bonding portion 2A and the right edge thermal bonding portion 2B, The part is formed in a bag shape with an opening. The upper edge thermal bonding part 2D is an unsealed opening before filling the contents, and after filling the contents from this part, it is sealed by heat sealing with a deaeration seal or the like. This constitutes a packaging bag. In addition, various means (first cut line 3, second cut line 3 ', V-shaped cutout, U-shaped cutout) that can be collectively referred to as easy-opening means to be described later are provided on the upper portion of the packaging bag 1. . Further, the occlusal tool 20 and the easy-opening means are located on the lower side in the vicinity of various means (first cut line 3, second cut line 3 ', V-shaped cutout, U-shaped cutout) that can be collectively referred to as easy-opening means. In the inner layer 13 of the front wall laminate 10A and the rear wall laminate 10B in parallel with various means (first cut line 3, second cut line 3 ', V-shaped cutout, U-shaped cutout) that can be collectively called Is provided.

ここで、本明細書においては、端縁熱接着部２の中で、図１等において左右方向の端部に位置するとともに上下方向に渡って形成されている一組の端縁熱接着部２を左側端縁熱接着部２Ａ、右側端縁熱接着部２Ｂと呼称し、図１等において上下方向の端部に位置するとともに左右方向に渡って形成されている一組の前記端縁熱接着部２のうち上側を上部端縁熱接着部２Ｄと呼称し、下側を底部端縁熱接着部２Ｃと呼称する。ただし、左側端縁熱接着部２Ａ、右側端縁熱接着部２Ｂに対し底部端縁熱接着部２Ｃと上部端縁熱接着部２Ｄとは重なる領域が存在するとの解釈されるおそれがあるため、本明細書においては、図１等において、ガセット領域γにおいては前壁用積層体１０Ａの内層１３と底壁用積層体１０Ｃの山折りで２面に区画された一方（図２の左側）の面の内層１３が対向しており、この対向する内層１３同士を周縁部を含む船底型（図１におけるガセット領域γにおける斜線部分）でヒートシールすると伴に、ガセット領域γにおいては後壁用積層体１０Ｂの内層１３と底壁用積層体１０Ｃの山折りで２面に区画された他方（図２の右側）の面の内層１３が対向しており、この対向する内層１３同士を周縁部を含む船底型（図１におけるガセット領域γにおける斜線部分）でヒートシールしているので、このようなヒートシールを行っている部分、すなわち、図１におけるガセット領域γにおける斜線部分を底部端縁熱接着部２Ｃと区画し、ガセット領域γより上側においては前壁用積層体１０Ａの内層１３と後壁用積層体１０Ｂの内層１３が対向しており、この対向する内層１３同士を周縁部を含む縦長長方形型（図１におけるガセット領域γより上側における左右の側端縁の斜線部分）でヒートシールしているので、このようなヒートシールを行っている部分、すなわち、図１における左右の側端縁でガセット領域γより上側で上端縁に至る斜線部分を左側端縁熱接着部２Ａ、右側端縁熱接着部２Ｂと区画し、それ以外の部分、つまり、前述した内容物を充填した後、脱気シールなどによりヒートシールする部分を上部端縁熱接着部２Ｄとして区画する。包装袋１は包装袋１を構成する矩形状の前壁用積層体１０Ａの外層１１と、矩形状の後壁用積層体１０Ｂの外層１１にそれぞれ、前記包装袋１の平面視状態において形成位置を異なるように第１切目線３と第２切目線３’が形成された切目線形成領域αと該切目線形成領域αよりも下端側（底部端縁熱接着部２Ｃ側）に相互に咬合し合う凸条の雄部材２１と凹条の雌部材２２とからなる合成樹脂製の咬合具２０が設けられる咬合具形成領域βとから構成される。   Here, in the present specification, among the edge thermal bonding portions 2, a set of edge thermal bonding portions 2 which are located at the left and right ends in FIG. Are referred to as the left edge thermal bonding part 2A and the right edge thermal bonding part 2B, and are located at the end in the vertical direction in FIG. The upper side of the part 2 is referred to as an upper edge thermal bonding part 2D, and the lower side is referred to as a bottom edge thermal bonding part 2C. However, since there is a possibility that the bottom edge thermal bonding part 2C and the upper edge thermal bonding part 2D overlap with the left edge thermal bonding part 2A and the right edge thermal bonding part 2B, In this specification, in FIG. 1 and the like, in the gusset region γ, one of the inner layer 13 of the front wall laminate 10A and the bottom wall laminate 10C is divided into two surfaces (left side in FIG. 2). The inner layers 13 of the surfaces are opposed to each other, and the opposed inner layers 13 are heat sealed with a ship bottom type including a peripheral portion (the hatched portion in the gusset region γ in FIG. 1). The inner layer 13 of the body 10B and the inner layer 13 on the other side (the right side in FIG. 2) divided into two surfaces by the mountain fold of the bottom wall laminate 10C are opposed to each other. Including the ship's bottom type In FIG. 1, the hatched portion in the gusset region γ in FIG. 1 is partitioned from the bottom edge thermal bonding portion 2C, and the heat-sealed portion is separated from the gusset region γ. On the upper side, the inner layer 13 of the front wall laminated body 10A and the inner layer 13 of the rear wall laminated body 10B are opposed to each other, and the opposed inner layers 13 are arranged in a vertically long rectangular shape including peripheral portions (from the gusset region γ in FIG. 1). (The hatched portion of the left and right side edges on the upper side), so that such heat sealing is performed, that is, the left and right side edges in FIG. The slashed portion is divided into the left edge thermal bonding portion 2A and the right edge thermal bonding portion 2B, and after filling the other portions, that is, the above-mentioned contents, by a deaeration seal or the like Defining a portion Toshiru as the upper edge heat seal portion 2D. The packaging bag 1 is formed on the outer layer 11 of the rectangular front wall laminate 10A constituting the packaging bag 1 and the outer layer 11 of the rectangular rear wall laminate 10B in the state of the packaging bag 1 in a plan view. The first cut line 3 and the second cut line 3 ′ are formed so as to be different from each other, and the cut line forming area α and the cut line forming area α are engaged with each other on the lower end side (bottom edge thermal bonding part 2C side). It is comprised from the occlusion implement formation area | region (beta) in which the synthetic resin occlusion implement 20 which consists of the protruding male member 21 and the concave female member 22 is provided.

次に、包装袋１に形成する切目線（第１切目線３と第２切目線３’）の実施形態について具体的に詳述する。図４は本発明にかかる包装袋に形成する切目線の第１実施形態を図解的に示す手前側から見た要部平面図、図５（ａ）は図４のＺ−Ｚ線断面を図解的に示す図，図５（ｂ）は図４のＷ−Ｗ線断面を図解的に示す図であって、切目線は、包装袋１を構成する前壁用積層体１０Ａ（手前側）の外層１１に形成された第１切目線３と、包装袋１を構成する後壁用積層体１０Ｂ（奥側）の外層１１に形成された第２切目線３’と、で構成される。   Next, embodiments of the cut lines (the first cut line 3 and the second cut line 3 ') formed in the packaging bag 1 will be specifically described in detail. FIG. 4 is a plan view of an essential part seen from the front side schematically illustrating the first embodiment of the cut line formed in the packaging bag according to the present invention, and FIG. FIG. 5B is a diagram schematically showing a cross section taken along the line W-W of FIG. The first cut line 3 formed in the outer layer 11 and the second cut line 3 ′ formed in the outer layer 11 of the rear wall laminate 10 </ b> B (back side) constituting the packaging bag 1.

さらに、包装袋１を構成する前壁用積層体１０Ａ（手前側）の外層１１に形成された第１切目線３は、左側端縁熱接着部２Ａの外縁の３箇所と右側端縁熱接着部２Ｂの外縁の３箇所とからそれぞれ左右の側端縁熱接着部２Ａ、２Ｂの内縁に向う方向に進行して左・右側端縁熱接着部２Ａ、２Ｂの内縁にまで達しない位置で収斂しており包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに平行する上下方向の位相（位置）（たとえば、上部端縁熱接着部２Ｄの外縁からの距離）を同じくする３本の第１―１起点側収斂状切目線３０Ａ、３本の第１―１終点側収斂状切目線３０Ｂと、この第１―１起点側収斂状切目線３０Ａの収斂した点と第１―１終点側収斂状切目線３０Ｂの収斂した点とからそれぞれ左・右側端縁熱接着部２Ａ、２Ｂに直交する左右方向に進行して左・右側端縁熱接着部２Ａ、２Ｂの内縁より内側に達しており包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに平行する上下方向の位相（位置）（たとえば、上部端縁熱接着部２Ｄの外縁からの距離）を同じくする１本の第１―２起点側直線状切目線３０Ｃ、１本の第１―２終点側直線状切目線３０Ｄと、これら１本の第１―２起点側直線状切目線３０Ｃ、１本の第１―２終点側直線状切目線３０Ｄのそれぞれの終端を繋ぐ上端側に膨らむ第１―３上端側切目線３０Ｅと下端側に膨らむ第１―３下端側切目線３０Ｆとから構成される。さらに、図４（ｂ）に示すように、第１―３上端側切目線３０Ｅは、その中央部分の約１ｃｍ幅程度の加工深度の浅い部分３０Ｅ"と、その加工深度の浅い部分３０Ｅ"の左右両脇と連接する加工深度の深い部分３０Ｅ'から構成されており、第１―３下端側切目線３０Ｆは、その中央部分の約１ｃｍ幅程度の加工深度の浅い部分３０Ｆ"と、その加工深度の浅い部分３０Ｆ"の左右両脇と連接する加工深度の深い部分３０Ｆ'から構成されている。   Further, the first cut line 3 formed in the outer layer 11 of the front wall laminate 10A (front side) that constitutes the packaging bag 1 has three locations on the outer edge of the left edge thermal bonding portion 2A and the right edge thermal bonding. Converge at positions that do not reach the inner edges of the left and right edge thermal bonding sections 2A, 2B from the three outer edges of the section 2B toward the inner edges of the left and right side edge thermal bonding sections 2A, 2B, respectively. The top and bottom phase (position) parallel to the left and right edge thermal bonding portions 2A and 2B of the packaging bag 1 (for example, the distance from the outer edge of the upper edge thermal bonding portion 2D) are the same. The first-first start-side converged cut line 30A, the three first-first end-side converged cut lines 30B, the converged point of the first-first start-side converged cut line 30A, and the first-first end The left and right edges of the heat-bonded portions 2A and 2B at the left and right sides from the converged point of the side converged cut line 30B respectively. The phase (position) in the vertical direction is advanced in the direction and reaches the inner edge of the left and right edge thermal bonding portions 2A and 2B and is parallel to the left and right edge thermal bonding portions 2A and 2B of the packaging bag 1. For example, one first-1-2 origin-side straight cut line 30C, one first-1-2 end-side straight cut line 30D having the same distance from the outer edge of the upper edge thermal bonding portion 2D, and these The first and second upper end side cut lines 30E and the lower end that bulge to the upper end side connecting the respective ends of the first and second start side linear cut lines 30C and the first and second end point side linear cut lines 30D. 1st-3 lower end side cut line 30F which bulges to the side. Further, as shown in FIG. 4B, the first to third upper end side cut lines 30E include a shallow portion 30E "having a processing depth of about 1 cm width in a central portion thereof and a portion 30E" having a shallow processing depth. The first to third lower end side cut lines 30F are connected to the left and right sides, and the first lower end side cut line 30F includes a shallow portion 30F "with a processing depth of about 1 cm in width at the center thereof and the processing thereof. It is composed of a deep processing portion 30F ′ connected to the left and right sides of the shallow depth portion 30F ″.

さらに、包装袋１を構成する後壁用積層体１０Ｂ（奥側）の外層１１に形成された第２切目線３’は、左側端縁熱接着部２Ａの外縁の３箇所と右側端熱縁接着部２Ｂの外縁の３箇所とからそれぞれ左・右側端縁熱接着部２Ａ，２Ｂの内縁に向う方向に進行して左・右側端縁熱接着部２Ａ、２Ｂの内縁にまで達しない位置で収斂しており包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに平行する上下方向の位相（位置）（たとえば、上部端縁熱接着部２Ｄの外縁からの距離）を同じくする３本の第２―１起点側収斂状切目線３１Ａ、３本の第２―１終点側収斂状切目線３１Ｂと、この第２―１起点側収斂状切目線３１Ａの収斂した点と第２―１終点側収斂状切目線３１Ｂの収斂した点とからそれぞれ左・右側端縁熱接着部２Ａ、２Ｂに直交する左右方向に進行して第１―２起点側直線状切目線３０Ｃ、第１―２終点側直線状切目線３０Ｄと位相（位置）および長さを同じくして延びる第２−２起点側直線状切目線３１Ｃ、第２−２終点側直線状切目線３１Ｄと、これら第２−２起点側直線状切目線３１Ｃ、第２−２終点側直線状切目線３１Ｄのそれぞれの終端を、一直線で繋ぐ第２−３中央直線状切目線３１Ｅとから構成される。さらに、図４に示すように、第２―３中央直線状切目線３１Ｅは、その中央部分の約１ｃｍ幅程度の箇所が加工深度の浅い部分３１Ｅ"と、その加工深度の浅い部分３１Ｅ"の左右両脇と連接する加工深度の深い部分３１Ｅ'から構成されている。   Furthermore, the 2nd cut line 3 'formed in the outer layer 11 of the laminated body 10B (back side) which comprises the packaging bag 1 is three places of the outer edge of 2A of left edge thermal bonding parts, and a right edge thermal edge. At a position that does not reach the inner edge of the left and right edge thermal bonding portions 2A, 2B from the three outer edge portions of the bonding portion 2B toward the inner edge of the left and right edge thermal bonding portions 2A, 2B, respectively. Three that converge and have the same phase (position) in the vertical direction parallel to the left and right edge thermal bonding portions 2A, 2B of the packaging bag 1 (for example, the distance from the outer edge of the upper edge thermal bonding portion 2D) 2-1 starting point side converging cut line 31A, three 2-1 end point side converging cutting lines 31B, and the point at which the 2-1 starting point side converging cutting line 31A converges and the 2-1 Left from the converged point of the end-point-side convergent cut line 31B and the left orthogonal to the left and right edge thermal bonding portions 2A and 2B, respectively 2-2 starting point side straight cut extending in the same direction and extending in the same phase (position) and length as the first and second starting point side straight cut lines 30C and 1-2 end point side straight cut line 30D. The line 31C, the 2-2 end point linear cut line 31D, and the ends of the 2-2 start point side straight cut line 31C and the 2-2 end point side straight cut line 31D are connected in a straight line. It is comprised from 2-3 center straight cut line 31E. Further, as shown in FIG. 4, the second-third central straight cut line 31E includes a portion 31E "having a shallow processing depth and a portion 31E" having a shallow processing depth at a portion having a width of about 1 cm in the central portion. It is comprised from the deep part 31E 'connected with the both right and left sides.

なお、各種切目線について、第１切目線３を構成する各種切目線については「第１」という文言を付し、左・右側端縁熱接着部２Ａ、２Ｂの外縁から順に「第１−１」「第１−２」「第１−３」との枝番を追加した文言を付しており、第２切目線３’を構成する各種切目線については「第２」という文言を付し、左・右側端縁熱接着部２Ａ、２Ｂの外縁から順に「第２−１」「第２−２」との枝番を追加した文言を付しており、枝番が小さい程、左・右側端縁熱接着部２Ａ、２Ｂの外縁寄りの切目線となり、枝番が大きい程、左・右側端縁熱接着部２Ａ、２Ｂの外縁から離れた中央寄りの切目線となる。また、第２−２起点側直線状切目線３１Ｃと第２−２終点側直線状切目線３１Ｄと第２−３中央側直線状切目線３１Ｅとは、同一直線状に並んでおり、本来的には区分する必要はないが、第１―２起点側直線状切目線３０Ｃと表裏で一致する部分（一部）を第２−２起点側直線状切目線３１Ｃと定義し、第１―２終点側直線状切目線３０Ｄと表裏で一致する部分（一部）を第２−２終点側直線状切目線３１Ｄと定義し、その残りの部分（一部）を第２−３中央直線状切目線３１Ｅと定義したものである。   For various cut lines, the word “first” is attached to the various cut lines constituting the first cut line 3, and “1-1-1” is sequentially applied from the outer edges of the left and right edge thermal bonding portions 2 </ b> A and 2 </ b> B. ”,“ 1-2 ”and“ 1-3 ”are added, and the word“ second ”is attached to the various cut lines constituting the second cut line 3 ′. , Left and right side edge thermal bonding part 2A, 2B, in order from the outer edge of the attached, "2-1" and "2-2" branch number is added, the smaller the branch number, It becomes a score line closer to the outer edge of the right edge thermal bonding portions 2A, 2B, and the larger the branch number, the closer to the center away from the outer edges of the left and right edge thermal bonding portions 2A, 2B. Further, the 2-2 start point side straight cut line 31C, the 2-2 end point side straight cut line 31D, and the 2-3 central side straight cut line 31E are aligned in the same straight line, However, it is not necessary to classify the first and second start side straight cut lines 30C, and a portion (part) that coincides with the first and second start side straight cut lines 31C is defined as a second and second start side straight cut lines 31C. The portion (part) that coincides with the end-point-side straight cut line 30D on the front and back is defined as the 2-2 end-point-side straight cut line 31D, and the remaining portion (part) is defined as the second-third central straight-cut This is defined as a line of sight 31E.

上記のように構成した包装袋１は、第１切目線３が交差する左側端縁熱接着部２Ａの左側（起点側）の外縁、たとえば、図４上の左側から上端側の領域を手指で摘んで第１切目線３より手前に引裂くと、包装袋１の上端部を構成する２枚の積層体（前壁用積層体１０Ａ、後壁用積層体１０Ｂ）のうち、手前側の前壁用積層体１０Ａと奥側の後壁用積層体１０Ｂは、３本の第１―１起点側収斂状切目線３０Ａのいずれかと３本の第２―１起点側収斂状切目線３１Ａのいずれかとが一致するように一体的に引裂かれて起点側の収斂点に達し、これに追随する第１―２起点側直線状切目線３０Ｃと第２―２起点側直線状切目線３１Ｃとに沿って直線的に一体的に引き裂かれて、引裂き開封線が下端側に膨らむ第１−３下端側切目線３０Ｆおよび上端側に膨らむ第１−３上端側切目線３０Ｅの分岐点に至って、手前に引裂くことの結果として第１切目線３においては第１―２起点側直線状切目線３０Ｃから第１−３下端側切目線３０Ｆに沿って、また、第２切目線３’においては第２−２起点側直線状切目線３１Ｃから第２−３中央側直線状切目線３１Ｅに沿って、それぞれ一致せずに引裂かれ、それぞれの引裂き開封線が第１−２終点側直線状切目線３０Ｄおよび第２―２終点側直線状切目線３１Ｄに至って、第１切目線３においては第１−３下端側切目線３０Ｆは第１−２終点側直線状切目線３０Ｄに沿って、また、第２切目線３’においては第２−２終点側直線状切目線３１Ｄに沿って直線的に一体的に引き裂かれて終点側の収斂点に達し、これに追随する３本の第１―１終点側収斂状切目線３０Ｂのいずれかと３本の第２―１終点側収斂状切目線３１Ｂのいずれかとが一致するように一体的に引裂かれて、図４上の右側端縁熱接着部２Ｂの右側（終点側）外縁に達して開封される。図９に示すように、引裂き開封線は滑らかな曲線と直線とからなるものであり、開封口についても美麗なものとすることができる。また、第１−３下端側切目線３０Ｆと第２−３中央側直線状切目線３１Ｅとにより形成される引裂き開封線は段差を生じるために前壁用積層体１０Ａと後壁用積層体１０Ｂとを容易に摘んで開口することができる。   The packaging bag 1 configured as described above has a finger on an outer edge on the left side (starting side) of the left edge thermal bonding portion 2A where the first cut line 3 intersects, for example, a region from the left side to the upper end side in FIG. When picked and torn to the near side from the first cut line 3, the front side of the two laminated bodies (the front wall laminated body 10A and the rear wall laminated body 10B) constituting the upper end portion of the packaging bag 1 The laminated body for wall 10A and the laminated body for rear wall 10B on the back side are either one of the three first-first origin-side convergent cut lines 30A and one of the three second-first origin-side convergent cut lines 31A. The heels are integrally torn so that the heels coincide with each other, reach the convergence point on the starting point side, and follow the first and second starting point side straight cut lines 30C and the second and second starting point side straight cut lines 31C. The first lower end side cut line 30F and the upper end where the tear opening line swells to the lower end side. As a result of reaching the branch point of the first to third upper end side cut line 30E that swells toward the front and tearing to the near side, the first lower end side from the first to second starting side linear cut line 30C in the first cut line 3 Tear along the cut line 30F, and at the second cut line 3 ', from the 2-2 origin side straight cut line 31C to the second-3 center side straight cut line 31E without matching. Each tear opening line reaches the 1-2 end point side straight cut line 30D and the 2-2 end point side straight cut line 31D, and the first cut line 3 has a 1-3 lower end side cut line 30F. Is linearly cut along the first-second end-side straight cut line 30D, and at the second cut-line 3 ', the end-point is linearly and integrally torn along the second-second end-side straight cut line 31D. The three first-first end-side convergences that reach and follow the convergence point One of the cut lines 30B and the three 2-1 end point side converged cut lines 31B are integrally torn so as to coincide with each other, and the right side edge (end point) of the right edge thermal bonding portion 2B on FIG. Side) It reaches the outer edge and is opened. As shown in FIG. 9, the tear opening line is composed of a smooth curve and a straight line, and the opening can be made beautiful. Further, the tear opening line formed by the first to third lower end side cut line 30F and the second to third center side straight cut line 31E causes a step, and thus the front wall laminate 10A and the rear wall laminate 10B. Can be easily picked and opened.

ここで、第１切目線３における第１−３下端側切目線３０Ｆに沿っての前壁用積層体１０Ａの引裂きは、左側の加工深度の深い部分３０Ｆ'（引裂き易い部分）に沿って、次に、中央部分の約１ｃｍ幅程度の加工深度の浅い部分３０Ｆ"（引裂き難い部分）に沿って、次に、右側の加工深度の深い部分３０Ｆ'（引裂き易い部分）に沿って進むが、加工深度の浅い部分３０Ｆ"（引裂き難い部分）は約１ｃｍ幅程度の中央部分に設けており、中央部分は曲率が小さく左右方向に平行に近いので、引裂き強度の違いはあるが、スムーズに引裂くことができる。   Here, the tearing of the front wall laminate 10A along the first-3 lower end side cut line 30F in the first cut line 3 is along the left portion 30F ′ having a deep processing depth (a portion that is easy to tear), Next, the process proceeds along a shallow portion 30F ″ (a portion that is difficult to tear) of about 1 cm width in the central portion, and then along a right portion 30F ′ (a portion that is easy to tear) on the right side. The shallow part 30F "(part that is difficult to tear) is provided in the center part of about 1cm width, and the center part has a small curvature and is almost parallel to the left and right direction. Can be torn.

また、第２切目線３’における第２−３中央側直線状切目線３１Ｅに沿っての後壁用積層体１０Ｂの引裂きは、左側の加工深度の深い部分３１Ｅ'（引裂き易い部分）に沿って、次に、中央部分の約１ｃｍ幅程度の加工深度の浅い部分３１Ｅ"（引裂き難い部分）に沿って、次に、右側の加工深度の深い部分３１Ｅ'（引裂き易い部分）に沿って進むが、加工深度の浅い部分３１Ｅ"（引裂き難い部分）は約１ｃｍ幅程度の中央部分に設けており、直線状で左右方向に平行なので、引裂き強度の違いはあるが、スムーズに引裂くことができる。   In addition, tearing of the rear wall laminate 10B along the second-third center-side straight cut line 31E at the second cut line 3 ′ is along the left portion 31E ′ (part that is easy to tear) having a deep processing depth. Next, the process proceeds along a shallow portion 31E ″ (a portion that is difficult to tear) of about 1 cm width in the central portion, and then along a right portion 31E ′ (a portion that is easy to tear) on the right side. However, the shallow part 31E ″ (hard to tear) is provided in the central part of about 1cm width, and since it is straight and parallel to the left and right, there is a difference in tear strength, but it can be torn smoothly. it can.

また、図示あるいは詳細な説明は省略するが、図４において包装袋１の開封時に、図４上の左側から上端側の領域を手指で摘んで第１切目線より奥側に引裂くと、引裂き開封線が下端側に膨らむ第１−３下端側切目線３０Ｆおよび上端側に膨らむ第１−３上端側切目線３０Ｅの分岐点に至って、奥側に引裂くことの結果として第１−２起点側直線状切目線３０Ｃから第１−３上端側切目線３０Ｅに沿って、引裂かれる他は、手前に引裂いた場合と同様に引き裂かれて開封されるものである。   Although illustration or detailed explanation is omitted, when the packaging bag 1 is opened in FIG. 4, if the region on the upper end side from the left side in FIG. 4 is picked with fingers and torn to the back side from the first cut line, tearing occurs. As a result of tearing to the back side as a result of reaching the branch point of the 1st-3 lower end side cut line 30F bulging to the lower end side and the 1st-3 upper end side cut line 30E bulging to the upper end side, the opening start line 1-2 Other than being torn along the first-third upper end side cut line 30E from the side straight cut line 30C, it is torn and opened in the same manner as in the case of tearing to the near side.

ここでも、第１切目線３における第１−３上端側切目線３０Ｅに沿っての前壁用積層体１０Ａの引裂きは、左側の加工深度の深い部分３０Ｅ'（引裂き易い部分）に沿って、次に、中央部分の約１ｃｍ幅程度の加工深度の浅い部分３０Ｅ"（引裂き難い部分）に沿って、次に、右側の加工深度の深い部分３０Ｅ'（引裂き易い部分）に沿って進むが、加工深度の浅い部分３０Ｅ"（引裂き難い部分）は約１ｃｍ幅程度の中央部分に設けており、中央部分は曲率が小さく左右方向に平行に近いので、引裂き強度の違いはあるが、スムーズに引裂くことができる。   Here, the tearing of the front wall laminate 10A along the first-third upper end-side cut line 30E in the first cut line 3 is along the left portion 30E ′ (easy to tear) with a deep processing depth, Next, the process proceeds along a shallow portion 30E ″ (a portion that is difficult to tear) of about 1 cm width in the central portion, and then along a right portion 30E ′ (a portion that is easy to tear) on the right side. The shallow processing depth 30E "(hard to tear) is provided in the central part of about 1cm width, and the central part has a small curvature and is almost parallel to the horizontal direction. Can be torn.

また、第２切目線３’における第２−３中央側直線状切目線３１Ｅに沿っての後壁用積層体１０Ｂの引裂きは、左側の加工深度の深い部分３１Ｅ'（引裂き易い部分）に沿って、次に、中央部分の約１ｃｍ幅程度の加工深度の浅い部分３１Ｅ"（引裂き難い部分）に沿って、次に、右側の加工深度の深い部分３１Ｅ'（引裂き易い部分）に沿って進むが、加工深度の浅い部分３１Ｅ"（引裂き難い部分）は約１ｃｍ幅程度の中央部分に設けており、直線状で左右方向に平行なので、引裂き強度の違いはあるが、スムーズに引裂くことができる。   In addition, tearing of the rear wall laminate 10B along the second-third center-side straight cut line 31E at the second cut line 3 ′ is along the left portion 31E ′ (part that is easy to tear) having a deep processing depth. Next, the process proceeds along a shallow portion 31E ″ (a portion that is difficult to tear) of about 1 cm width in the central portion, and then along a right portion 31E ′ (a portion that is easy to tear) on the right side. However, the shallow part 31E ″ (hard to tear) is provided in the central part of about 1cm width, and since it is straight and parallel to the left and right, there is a difference in tear strength, but it can be torn smoothly. it can.

また、図６は本発明にかかる包装袋に形成する切目線の第２実施形態を図解的に示す手前側から見た要部平面図であって、図４においては第１切目線３の第１−３上端側切目線３０Ｅと第１−３下端側切目線３０Ｆを円弧状の形状としたものを示したが、円弧状の形状に替えて略コの字状の上端側に膨らむ第１−３上端側切目線３０Ｇと下端側に膨らむ第１−３下端側切目線３０Ｈとしたものであり、更に、第１―３上端側切目線３０Ｇは、その中央部分の約２ｃｍ幅程度の加工深度の浅い部分３０Ｇ"と、その加工深度の浅い部分３０Ｇ"の左右両脇と連接する加工深度の深い部分３０Ｇ'から構成されており、第１―３下端側切目線３０Ｈは、その中央部分の約２ｃｍ幅程度の加工深度の浅い部分３０Ｈ"と、その加工深度の浅い部分３０Ｈ"の左右両脇と連接する加工深度の深い部分３０Ｈ'から構成されており、加工深度の浅い部分３０Ｇ"と３０Ｈ"を長幅にしており、これにあわせて、第２―３中央直線状切目線３１Ｅは、その中央部分の約２ｃｍ幅程度の加工深度の浅い部分３１Ｅ"と、その加工深度の浅い部分３１Ｅ"の左右両脇と連接する加工深度の深い部分３１Ｅ'から構成されており、これ以外は図４と同じであり、説明は省略する。なお、第２実施形態の場合、第１切目線３の第１−２起点側直線状切目線３０Ｃあるいは第１−２終点側直線状切目線３０Ｄに対して略コの字状の第１−３上端側切目線３０Ｇあるいは第１−３下端側切目線３０Ｈがなす角度θ（一箇所のみ記載した）は１６０〜１７５度が望ましい。また、第１−３上端側切目線３０Ｇにおける加工深度の浅い部分３０Ｇ"と第１―３下端側切目線３０Ｈにおける加工深度の浅い部分３０Ｈ"と第２―３中央直線状切目線３１Ｅにおける加工深度の浅い部分３１Ｅ"は、いずれも直線状で左右方向に平行なので、第１実施形態と比べてより長幅に設けることが可能である。   FIG. 6 is a plan view of an essential part seen from the front side schematically showing a second embodiment of the cut line formed in the packaging bag according to the present invention. In FIG. Although the 1-3 upper end side cut line 30E and the 1-3 lower end side cut line 30F are shown in an arc shape, the first bulge to the upper end side of a substantially U-shape instead of the arc shape. -3 is an upper end side cut line 30G and a first-3 lower end side cut line 30H bulging to the lower end side. Further, the 1-3 upper end side cut line 30G is a processing of about 2 cm width at the center portion thereof. A shallow depth portion 30G "and a deep processing depth portion 30G 'connected to the left and right sides of the shallow processing depth portion 30G" are shown. 30H "with a shallow processing depth of about 2 cm width and 30H" with a shallow processing depth Consists of deep machining depth 30H 'connected to both left and right sides, shallow machining depths 30G "and 30H" are long, and in accordance with this, 2-3 central straight cut line 31E is composed of a shallow portion 31E "having a processing depth of about 2 cm in the center and a deep processing portion 31E 'connected to the left and right sides of the shallow processing portion 31E". Other than that is the same as FIG. In the case of the second embodiment, the first cut line 1 is substantially U-shaped with respect to the first-second start point side straight cut line 30C or the first-second end point side straight cut line 30D of the first cut line 3. It is desirable that the angle θ (only one place is described) formed by the 3 upper end side cut line 30G or the 1-3 lower end side cut line 30H is 160 to 175 degrees. Further, a portion 30G "having a shallow machining depth in the first to third upper end cut line 30G, a portion 30H" having a shallow machining depth in the first to third lower end cut line 30H, and a machining in the second to third central straight cut line 31E. The shallow portions 31E ″ are both linear and parallel to the left-right direction, and thus can be provided with a longer width than in the first embodiment.

また、図７は本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第３実施形態を図解的に示す手前側から見た要部平面図であって、図４においては第１切目線３（または第１切目線３’）のみを易開封手段（鋏やナイフ等の道具を用いることなく手だけで包装袋を開封するための弱化部）とし、第１−１起点側収斂状切目線３０Ａ（または、前記第２−１起点側収斂状切目線３１Ａ）のみを開封開始手段（引裂きを開始する端緒となる弱化部）としたものを示したが、図７ではこれにＶ字状の切欠を組み合わせて易開封手段並びに開封開始手段とするものであり、第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の最も外側に存在する２本（図７では中央の一本を挟み込む２本）が左側端縁熱接着部２Ａの左側（起点側）外縁と交差することで形成される三角領域内に、あるいは、第１−１終点側収斂状切目線３０Ｂ（または、第２−１終点側収斂状切目線３１Ｂ）の最も外側に存在する２本（図７では中央の一本を挟み込む２本）が右側端縁熱接着部２Ｂの右側（終点側）外縁と交差することで形成される三角領域内に、Ｖ字状の切欠を設けることで、目の不自由な使用者であっても開封開始箇所を特定できる点においては視覚的に開封をより容易なものとすることができる。さらに、Ｖ字状の切欠の内側を向いた先端部（Ｖ字の折り返し点）が、第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の収斂点に近接することにより、Ｖ字状の切欠から引裂きを開始すれば、引裂き開封線はＶ字状の切欠の内側を向いた先端部から略直線的に第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の収斂点に達するので、機能的に開封をより容易なものとすることができる。   FIG. 7 is a plan view of an essential part seen from the front side schematically illustrating a third embodiment in which a V-shaped notch is combined with a score line formed in the packaging bag according to the present invention. Uses only the first cut line 3 (or the first cut line 3 ′) as an easy opening means (a weakened part for opening the packaging bag by hand without using a tool such as a bag or knife), and 1-1 Although only the starting side converging cut line 30A (or the 2-1 starting side converging cutting line 31A) is shown as an opening start means (a weakened part that starts tearing), FIG. This is combined with a V-shaped notch to form an easy-opening means and an opening-starting means. The first-first starting-side converged cut line 30A (or the second-first starting-side converged cut line 31A) The two outermost ones (two in the middle of Fig. 7) In the triangular region formed by intersecting the left (starting side) outer edge of the edge thermal bonding portion 2A, or the 1-1 end point converging cut line 30B (or the 2-1 end point converging cut) In the triangular region formed by the two outermost lines (the two lines sandwiching the central one in FIG. 7) intersecting the right edge (end point side) outer edge of the right edge thermal bonding portion 2B In addition, by providing a V-shaped notch, it is possible to make the opening easier visually in that the opening start location can be specified even by a user who is blind. Furthermore, the front end portion (V-shaped folding point) facing the inside of the V-shaped notch is the first-first starting-side convergent cut line 30A (or the 2-1 starting-point-side convergent cutting line 31A). If tearing starts from the V-shaped notch by approaching the convergent point, the tear opening line is approximately straight from the leading end facing the inside of the V-shaped notch. Since the convergence point of the line of sight 30A (or the 2-1 starting point side convergent cut line 31A) is reached, the opening can be made functionally easier.

また、図４においては、第１―３上端側切目線３０Ｅ、第１―３下端側切目線３０Ｆ、第２―３中央直線状切目線３１Ｅにおける中央部分の約１ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約１ｃｍ幅程度の箇所を加工深度の浅い部分３０Ｅ"、３０Ｆ"、３１Ｅ"とし、その加工深度の浅い部分３０Ｅ"、３０Ｆ"、３１Ｅ"の左右両脇と連接する加工深度の深い部分３０Ｅ'、３０Ｆ'、３１Ｅ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｅ'、３０Ｆ'、３１Ｅ'）、次に引裂き難い部分（３０Ｅ"、３０Ｆ"、３１Ｅ"）、次に引裂き易い部分（３０Ｅ'、３０Ｆ'、３１Ｅ'）と引裂き強度が変化するものを示したが、図７では、第１―３上端側切目線３０Ｅ、第１―３下端側切目線３０Ｆ、第２―３中央直線状切目線３１Ｅにおける中央部分の約１ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約１ｃｍ幅程度の箇所を間欠状カット部分３０Ｅ"、３０Ｆ"、３１Ｅ"とし、その間欠状カット部分３０Ｅ"、３０Ｆ"、３１Ｅ"の左右両脇と連接する連続状カット部分３０Ｅ'、３０Ｆ'、３１Ｅ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｅ'、３０Ｆ'、３１Ｅ'）、次に引裂き難い部分（３０Ｅ"、３０Ｆ"、３１Ｅ"）、次に引裂き易い部分（３０Ｅ'、３０Ｆ'、３１Ｅ'）と引裂き強度が変化するものを示している。具体的には、図７では、第１―３上端側切目線３０Ｅは、その中央部分の約１ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３０Ｅ"と、その間欠状カット部分３０Ｅ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３０Ｅ'から構成されている。第１―３下端側切目線３０Ｆは、その中央部分の約１ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３０Ｆ"と、その間欠状カット部分３０Ｆ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３０Ｆ'から構成されている。第２―３中央直線状切目線３１Ｅは、その中央部分の約１ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３１Ｅ"と、その間欠状カット部分３１Ｅ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３１Ｅ'から構成されている。   Further, in FIG. 4, a portion having a width of about 1 cm in the central portion of the first to third upper end cut lines 30E, the first to third lower end cut lines 30F, and the second to third central straight cut lines 31E is excluded. In order to make the tear strength relatively higher than that of the portion (to make it difficult to tear), the portion having a width of about 1 cm in the central portion is defined as portions 30E ", 30F", 31E "having a shallow processing depth, and the processing depth is shallow. By providing deeply processed depth portions 30E ′, 30F ′, 31E ′ connected to the left and right sides of the portions 30E ″, 30F ″, 31E ″, a portion that is easy to tear as the tear progresses from the left side to the right side (30E ′ , 30F ′, 31E ′), the next portion that is difficult to tear (30E ″, 30F ″, 31E ″), the second portion that is easy to tear (30E ′, 30F ′, 31E ′), and the one whose tear strength changes. In Fig. 7, the top end of 1-3 The tear strength is relatively higher at the center portion of the cut line 30E, the first-third lower end cut line 30F, and the second-third central straight cut line 31E than the other parts. In order to make it difficult to tear), the central portion of about 1 cm width is defined as intermittent cut portions 30E ", 30F", 31E ", and connected to the left and right sides of the intermittent cut portions 30E", 30F ", 31E". By providing the continuous cut portions 30E ′, 30F ′, and 31E ′, the portions that are easy to tear (30E ′, 30F ′, 31E ′) and the portions that are difficult to tear (30E ″) as tearing proceeds from the left to the right , 30F ″, 31E ″), the next easily tearable portion (30E ′, 30F ′, 31E ′) and the one in which the tear strength changes. Specifically, in FIG. 7, the first to third upper end side cut lines 30E are intermittent cut portions 30E "formed by alternately arranging cut portions and uncut portions of about 1 cm width at the center portion thereof, Only the cut part connected to the left and right sides of the intermittent cut part 30E ″ is constituted by a continuous cut part 30E ′ arranged continuously. The 1-3rd lower end side cut line 30F includes an intermittent cut portion 30F "in which cut portions and uncut portions having a width of about 1 cm in the central portion are alternately arranged, and left and right sides of the intermittent cut portion 30F". Only a cut portion connected to both sides is constituted by a continuous cut portion 30F ′ arranged continuously. The second-third central straight cut line 31E includes an intermittent cut portion 31E "in which cut portions and uncut portions having a width of about 1 cm in the central portion are alternately arranged, and the intermittent cut portion 31E". Only a cut portion connected to the left and right sides is constituted by a continuous cut portion 31E ′ arranged continuously.

また、図８は本発明にかかる包装袋に形成する切目線にＵ字状の切欠を組み合わせた第４実施形態を図解的に示す手前側から見た要部平面図であって、図６においては第１切目線３（または第１切目線３’）のみを易開封手段（鋏やナイフ等の道具を用いることなく手だけで包装袋を開封するための弱化部）とし、第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）のみを開封開始手段（引裂きを開始する端緒となる弱化部）としたものを示したが、図８ではこれにＵ字状の切欠を組み合わせて易開封手段並びに開封開始手段とするものであり、第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の最も外側に存在する２本（図８では中央の一本を挟み込む２本）が左側端縁熱接着部２Ａの左側（起点側）外縁と交差することで形成される三角領域内に、あるいは、第１−１終点側収斂状切目線３０Ｂ（または、第２−１終点側収斂状切目線３１Ｂ）の最も外側に存在する２本（図８では中央の一本を挟み込む２本）が右側端縁熱接着部２Ｂの右側（終点側）外縁と交差することで形成される三角領域内に、Ｕ字状の切欠を設けることで、目の不自由な使用者であっても開封開始箇所を特定できる点においては視覚的に開封をより容易なものとすることができる。さらに、Ｕ字状の切欠の内側を向いた先端部（Ｕ字の変曲点）が、第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の収斂点に近接することにより、Ｕ字状の切欠から引裂きを開始すれば、引裂き開封線はＵ字状の切欠の内側を向いた先端部から略直線的に第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の収斂点に達するので、機能的に開封をより容易なものとすることができる。   FIG. 8 is a plan view of an essential part seen from the front side schematically illustrating a fourth embodiment in which a U-shaped cutout is combined with a score line formed in the packaging bag according to the present invention. Uses only the first cut line 3 (or the first cut line 3 ′) as an easy opening means (a weakened part for opening the packaging bag by hand without using a tool such as a bag or knife), and 1-1 Although only the starting side converging cut line 30A (or the 2-1 starting side converging cutting line 31A) is shown as an opening start means (a weakening part that starts tearing), FIG. 8 shows this. The U-shaped notch is combined with the easy opening means and the opening start means, and the most of the first-first starting-side convergent cut line 30A (or the first-first starting-side converged cut line 31A) Two on the outside (two that sandwich the center one in Fig. 8) is the left edge In the triangular region formed by intersecting the left (starting side) outer edge of the bonding portion 2A, or the 1-1 end point side convergent cut line 30B (or the 2-1 end point side converged cut line 31B ) In the triangular region formed by crossing the outer edge on the right side (end point side) of the right edge thermal bonding part 2B, By providing the U-shaped notch, it is possible to visually make opening easier in that the opening start location can be specified even by a user who is blind. Furthermore, the front end portion (U-shaped inflection point) facing the inside of the U-shaped notch is a first-first starting-side convergent score line 30A (or a second-first starting-side convergent score line 31A). If tearing starts from the U-shaped notch by approaching the converging point, the tear opening line is substantially straight from the front end of the U-shaped notch to the first-first origin side converging shape. Since the convergence point of the cut line 30A (or the (2-1) starting point side convergent cut line 31A) is reached, the opening can be made functionally easier.

また、図６においては、第１―３上端側切目線３０Ｇ、第１―３下端側切目線３０Ｈ、第２―３中央直線状切目線３１Ｅにおける中央部分の約１ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約１ｃｍ幅程度の箇所を加工深度の浅い部分３０Ｇ"、３０Ｈ"、３１Ｅ"とし、その加工深度の浅い部分３０Ｇ"、３０Ｈ"、３１Ｅ"の左右両脇と連接する加工深度の深い部分３０Ｇ'、３０Ｈ'、３１Ｅ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｇ'、３０Ｈ'、３１Ｅ'）、次に引裂き難い部分（３０Ｇ"、３０Ｈ"、３１Ｅ"）、次に引裂き易い部分（３０Ｇ'、３０Ｈ'、３１Ｅ'）と引裂き強度が変化するものを示したが、図８では、第１―３上端側切目線３０Ｇ、第１―３下端側切目線３０Ｈ、第２―３中央直線状切目線３１Ｅにおける中央部分の約２ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約２ｃｍ幅程度の箇所を間欠状カット部分３０Ｇ"、３０Ｈ"、３１Ｅ"とし、その間欠状カット部分３０Ｇ"、３０Ｈ"、３１Ｅ"の左右両脇と連接する連続状カット部分３０Ｇ'、３０Ｈ'、３１Ｅ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｇ'、３０Ｈ'、３１Ｅ'）、次に引裂き難い部分（３０Ｇ"、３０Ｈ"、３１Ｅ"）、次に引裂き易い部分（３０Ｇ'、３０Ｈ'、３１Ｅ'）と引裂き強度が変化するものを示している。具体的には、図８では、第１―３上端側切目線３０Ｇは、その中央部分の約２ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３０Ｇ"と、その間欠状カット部分３０Ｇ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３０Ｇ'から構成されている。第１―３下端側切目線３０Ｈは、その中央部分の約２ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３０Ｈ"と、その間欠状カット部分３０Ｈ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３０Ｈ'から構成されている。第２―３中央直線状切目線３１Ｅは、その中央部分の約２ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３１Ｅ"と、その間欠状カット部分３１Ｅ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３１Ｅ'から構成されている。   Further, in FIG. 6, a portion having a width of about 1 cm in the center portion of the first to third upper end side cut lines 30G, the first to third lower end side cut lines 30H, and the second to third central straight cut line 31E is excluded. In order to make the tear strength relatively higher than that of the part (to make it difficult to tear), the portion having a width of about 1 cm in the central portion is set to the shallow processing depth portions 30G ", 30H", 31E ", and the processing depth is shallow. By providing deep processing portions 30G ′, 30H ′, and 31E ′ that are connected to the left and right sides of the portions 30G ″, 30H ″, and 31E ″, a portion that is easy to tear (30G ′ , 30H ′, 31E ′), the next portion that is difficult to tear (30G ″, 30H ″, 31E ″), the second portion that is easy to tear (30G ′, 30H ′, 31E ′), and the one whose tear strength changes. In FIG. 8, the upper end of 1-3 The tear strength is relatively higher at the center portion of the cut line 30G, the first-third lower end cut line 30H, and the second-third central straight cut line 31E, which is about 2 cm wide than the other parts ( In order to make it difficult to tear), the central portion of about 2 cm width is defined as intermittent cut portions 30G ", 30H", 31E "and connected to the left and right sides of the intermittent cut portions 30G", 30H ", 31E". By providing the continuous cut portions 30G ′, 30H ′, and 31E ′, the portions that are easily torn (30G ′, 30H ′, and 31E ′) and the portions that are difficult to tear (30G ″) as tearing proceeds from the left to the right , 30H ″, 31E ″), the next easily tearable portion (30G ′, 30H ′, 31E ′) and the one in which the tear strength changes. Specifically, in FIG. 8, the first to third upper end side cut lines 30G are intermittent cut portions 30G "in which cut portions and uncut portions having a width of about 2 cm at the center portion are alternately arranged, Only the cut portions connected to the left and right sides of the intermittent cut portion 30G ″ are constituted by a continuous cut portion 30G ′ arranged continuously. The 1st-3 lower end side cut line 30H has an intermittent cut portion 30H "in which cut portions and uncut portions of about 2 cm width in the central portion are alternately arranged, and left and right sides of the intermittent cut portion 30H". Only a cut portion connected to both sides is constituted by a continuous cut portion 30H ′ arranged continuously. The second-third central straight cut line 31E includes an intermittent cut portion 31E "in which cut portions and uncut portions having a width of about 2 cm in the central portion are alternately arranged, and the intermittent cut portion 31E". Only a cut portion connected to the left and right sides is constituted by a continuous cut portion 31E ′ arranged continuously.

なお、図４、図６、図７、図８に示す第１〜第４実施形態は、共通の概念で包括して表現すれば、以下の特徴的構成を備えている。   In addition, the 1st-4th embodiment shown in FIG.4, FIG.6, FIG.7 and FIG. 8 is equipped with the following characteristic structures if it represents comprehensively with a common concept.

第一に、外層とアルミニウムからなる中間層と熱接着性樹脂からなる内層とを少なくとも有する積層体からなる前壁シートと後壁シートの内層面を対向して配置し、当該前壁シートと後壁シートの下端部に熱接着性樹脂からなる内層を少なくとも有する積層体からなる底壁シートを内層面を外面にして中央で山折りして挿入し、前記前壁シートの内層面と前記後壁シートの内層面に対して対向する山折りした前記底壁シートの外面とを前記底壁シートの周縁部にてヒートシールして底部端縁熱接着部を形成し、前記前壁シートの内層面に対向する前記後壁シートの内層面同士を左右の側端縁をヒートシールして左右の側端縁熱接着部を形成してなる包装袋である。   First, the front wall sheet composed of a laminate having at least an outer layer, an intermediate layer composed of aluminum, and an inner layer composed of a heat-adhesive resin is disposed so that the inner layer surfaces of the rear wall sheet face each other. A bottom wall sheet made of a laminate having at least an inner layer made of a heat-adhesive resin at the lower end of the wall sheet is inserted by folding in the center with the inner layer surface as the outer surface, and the inner layer surface and the rear wall of the front wall sheet The outer surface of the folded bottom wall sheet facing the inner layer surface of the sheet is heat-sealed at the periphery of the bottom wall sheet to form a bottom edge thermal bonding portion, and the inner layer surface of the front wall sheet It is a packaging bag formed by heat-sealing the left and right side edges of the inner wall surfaces of the rear wall sheet opposed to each other to form the left and right side edge thermal bonding portions.

第二に、前記前壁シートの外層に、前記左の側端縁熱接着部の外縁を起点として、当該起点と前記左右の側端縁熱接着部に平行する方向の位置を同じくする前記右の側端縁熱接着部の外縁を終点として連続する第１切目線を形成し、前記後壁シートの外層に、前記左の側端縁熱接着部の外縁を起点として、当該起点と前記左右の側端縁熱接着部に平行する方向の位置を同じくする前記右の側端縁熱接着部の外縁を終点として連続する第２切目線を形成し、前記包装袋の平面視状態における前記第１切目線と前記第２切目線の形成位置を異なるものとすることで、前記第１切目線と前記第２切目線に沿って前記包装袋の上端側を前記左右の側端縁熱接着部に直交する方向に引裂き開口した際に、引裂き開口部を形成する前記前壁シートの切断面の外郭と前記後壁シートの切断面の外郭とを異ならしめることで、引裂き開口部に段差を生じさせる包装袋である。   Second, on the outer layer of the front wall sheet, starting from the outer edge of the left side edge thermal bonding portion, the right side having the same position in the direction parallel to the starting edge and the left and right side edge thermal bonding portions Forming a first cut line that continues from the outer edge of the side edge thermal bonding portion as an end point, and the outer layer of the rear wall sheet starts from the outer edge of the left side edge thermal bonding portion as the starting point and the left and right sides Forming a second cut line that continues from the outer edge of the right side edge thermal bonding portion that has the same position in the direction parallel to the side edge thermal bonding portion of the packaging bag as an end point. By making the formation positions of the first cut line and the second cut line different, the upper and lower side edge thermal bonding portions of the upper and lower sides of the packaging bag along the first cut line and the second cut line The cut surface of the front wall sheet that forms a tear opening when a tear opening is made in a direction perpendicular to By occupying different from the contour of the outer and the cutting surface of the rear wall sheets, a packaging bag to cause a step in the tear-open portion.

第三に、前記第１切目線は、起点から前記左の側端縁熱接着部の内縁に向う方向に進行して起点側の前記左の側端縁熱接着部の内縁にまで達しない位置で収斂する起点側の複数本の切目線と、前記起点側の複数本の切目線の収斂した点から前記左右の側端縁熱接着部に直交する方向に進行して起点側の前記左の側端縁熱接着部の内縁より内側に達する起点側の一本の切目線と、終点から前記右の側端縁熱接着部の内縁に向う方向に進行して終点側の前記右の側端縁熱接着部の内縁にまで達しない位置で収斂する終点側の複数本の切目線と、前記終点側の複数本の切目線の収斂した点から前記左右の側端縁熱接着部に直交する方向に進行して終点側の前記右の側端縁熱接着部の内縁より内側に達する終点側の一本の切目線と、前記起点側の一本の切目線の終端から分岐して前記終点側の一本の切目線の終端に収斂する中央側の複数本の切目線から構成されており、前記第２切目線は、起点から前記左の端縁熱接着部の内縁に向う方向に進行して起点側の前記左の側端縁熱接着部の内縁にまで達しない位置で収斂する起点側の複数本の切目線と、終点から前記右の側端縁熱接着部の内縁に向う方向に進行して終点側の前記右の側端縁熱接着部の内縁にまで達しない位置で収斂する終点側の複数本の切目線と、前記起点側の複数本の切目線の収斂した点から前記左右の側端縁熱接着部に直交する方向に進行して前記終点側の複数本の切目線の収斂した点に達する中央側の一本の切目線と、から構成されており、前記包装袋の平面視状態における前記第１切目線を構成する前記中央側の複数本の切目線の形成位置は上端側に膨れる切目線と下端側に膨れる切目線から構成されている包装袋である。   Third, the first cut line does not reach the inner edge of the left side edge thermal bonding portion on the starting point side in the direction from the starting point toward the inner edge of the left side edge thermal bonding portion. A plurality of score lines on the origin side converging at the left side and the left side of the origin side proceeding in a direction perpendicular to the left and right side edge thermal bonding portions from the converged points of the plurality of score lines on the origin side A single cut line that extends inward from the inner edge of the side edge thermal bonding portion, and the right side edge on the end point side that proceeds from the end point toward the inner edge of the right side edge thermal bonding portion A plurality of score lines on the end point side that converge at a position that does not reach the inner edge of the edge thermal bonding portion, and a point where the plurality of score lines on the end point side converge, perpendicular to the left and right side edge thermal bonding portions One cut line on the end point side that reaches the inner side of the inner edge of the right side edge thermal bonding part on the end point side, proceeding in the direction, and one on the start side It is composed of a plurality of central cut lines that branch from the end of the cut line and converge to the end of the single cut line on the end point side, and the second cut line is the left edge from the starting point A plurality of cut lines on the starting side that converge in a position that does not reach the inner edge of the left side edge thermal bonding portion on the starting side by moving toward the inner edge of the thermal bonding portion, and the right side from the end point A plurality of score lines on the end point side that converge in a position that does not reach the inner edge of the right side edge thermal bond part on the right side end point, proceeding in the direction toward the inner edge of the edge thermal bond part, and A single cut line on the central side that reaches in a direction perpendicular to the left and right side edge thermal bonding portions from the converged point of the multiple cut lines and reaches the converged point of the multiple cut lines on the end point side And a plurality of the central side constituting the first cut line in a plan view state of the packaging bag Formation position of the score line is a packaging bag which is composed of score line to bulge score line and the lower side bulging at the upper end.

第四に、前記第１切目線に沿った前記前壁シートの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定され、前記第２切目線に沿った前記後壁シートの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定されている包装袋である。   Fourth, the tear wall strength of the center portion of the front wall sheet along the first cut line is set to be relatively higher than the tear strength of other parts, and the rear wall along the second cut line This is a packaging bag in which the tear strength of the central portion of the sheet is set relatively higher than the tear strength of the other portions.

これらの４つの特徴的構成を備える図４、図６、図７、図８に示す第１〜第４実施形態は、特に第一から第三の特徴的構成を備えることにより、容易に引き裂いて開封することができる。具体的には、包装袋の第１切目線を備える面を手前に向けて、第１切目線より上端側の領域を手指で摘んで手前に引裂くと、包装袋の上端側の領域を構成する前壁シートと後壁シートのうち、手前側の前壁シートは起点側の複数本の切目線のいずれかと、これに追随する起点側の一本の切目線と、これに追随する中央側の複数本の切目線のうち下端側に膨れる切目線と、これに追随する終点側の一本の切目線と、これに追随する終点側の複数本の切目線のいずれかに沿って引裂き線が形成され、逆に、第１切目線より上端側の領域を摘んで奥側に引裂くと、包装袋の上端側の領域を構成する前壁シートと後壁シートのうち、手前側の前壁シートは起点側の複数本の切目線のいずれかと、これに追随する起点側の一本の切目線と、これに追随する中央側の複数本の切目線のうち上端側に膨れる切目線と、これに追随する終点側の一本の切目線と、これに追随する終点側の複数本の切目線のいずれかに沿って引裂き線が形成されるので、切目線から外れることなく引裂くことができ、引き裂いて開封した際の引裂き開口部が美麗であると共に引裂き開口部の表裏の積層体の外郭が異なり段差が生じることにより手指で容易に摘んで開口することができるスタンディングタイプの包装袋となる。図４、図６、図７、図８に示す第１〜第４実施形態は、これらの４つの特徴的構成を備える範囲内で種々のバリエーションが可能である。   The first to fourth embodiments shown in FIG. 4, FIG. 6, FIG. 7, and FIG. Can be opened. Specifically, when the surface having the first cut line of the packaging bag is directed toward the front, the region on the upper end side from the first cut line is picked with a finger and torn to the front, the upper end side region of the packaging bag is configured. The front wall sheet of the front wall sheet and the rear wall sheet to be used is one of a plurality of cut lines on the starting side, a single cut line on the starting side that follows this, and the center side that follows this A tear line along one of a plurality of score lines that swells to the lower end side, a single score line that follows this, and a plurality of score lines that follow this end line In contrast, when the area on the upper end side from the first cut line is picked and torn to the back side, the front wall sheet and the rear wall sheet constituting the area on the upper edge side of the packaging bag are in front of the front side. The wall sheet follows one of the multiple score lines on the origin side, and one score line that follows the score line. Along the cut line which swells to the upper end side among the plural cut lines on the center side, one cut line on the end point side following this, or the plurality of cut lines on the end point side following this Since the tear line is formed, it can be torn without detaching from the cut line, the tear opening when it is opened by tearing is beautiful, and the outer shell of the laminate on the front and back of the tear opening has a different step. Thus, it becomes a standing type packaging bag that can be easily picked and opened with fingers. The first to fourth embodiments shown in FIGS. 4, 6, 7, and 8 can be variously modified within a range including these four characteristic configurations.

図１０は図１のＹ−Ｙ線断面を図解的に示す図であって、本発明にかかる包装袋に形成する切目線の第５〜第９実施形態を図解的に示す要部断面図であり、包装袋１はスタンディングタイプの包装袋としての構成は第１〜第４実施形態と共通している。また、包装袋１の上部には後述する易開封手段と総称できる各種手段（第１切目線３、第２切目線３’、Ｖ字状の切欠）が設けられている。さらに、易開封手段と総称できる各種手段（第１切目線３、第２切目線３’、Ｖ字状の切欠）の近傍下側には咬合具２０が易開封手段と総称できる各種手段（第１切目線３、第２切目線３’、Ｖ字状の切欠）に平行に前壁用積層体１０Ａと後壁用積層体１０Ｂの内層１３に設けられている構成も第１〜第４実施形態と共通している。   FIG. 10 is a view schematically showing a cross section taken along line YY of FIG. 1, and is a cross-sectional view of a principal part schematically showing fifth to ninth embodiments of cut lines formed in the packaging bag according to the present invention. Yes, the structure of the packaging bag 1 as a standing type packaging bag is common to the first to fourth embodiments. Further, various means (first cut line 3, second cut line 3 ', V-shaped cutout) that can be collectively referred to as easy-opening means, which will be described later, are provided on the top of the packaging bag 1. Further, various means (first notches) that can be collectively referred to as easy-opening means on the lower side in the vicinity of various means that can be collectively referred to as easy-opening means (first cut line 3, second cut line 3 ', V-shaped notch). The first to fourth embodiments are also provided in the inner layer 13 of the front wall laminate 10A and the rear wall laminate 10B in parallel with the first cut line 3, the second cut line 3 ′, and the V-shaped cutout). Common with form.

図１１は本発明にかかる包装袋に形成する切目線の第５実施形態を図解的に示す手前側から見た要部平面図、図１２（ａ）は図１１のＺ−Ｚ線断面を図解的に示す図，図１２（ｂ）は図１１のＷ−Ｗ線断面を図解的に示す図であって、切目線は、包装袋１を構成する前壁用積層体１０Ａ（手前側）の外層１１に形成された第１切目線３と、包装袋１を構成する後壁用積層体１０Ｂ（奥側）の外層１１に形成された第２切目線３’と、で構成される。   FIG. 11 is a plan view of an essential part seen from the front side schematically illustrating a fifth embodiment of the cut line formed in the packaging bag according to the present invention, and FIG. FIG. 12B is a diagram schematically showing a cross section taken along the line W-W of FIG. The first cut line 3 formed in the outer layer 11 and the second cut line 3 ′ formed in the outer layer 11 of the rear wall laminate 10 </ b> B (back side) constituting the packaging bag 1.

さらに、包装袋１を構成する前壁用積層体１０Ａ（手前側）の外層１１に形成された第１切目線３は、左側端縁熱接着部２Ａの外縁の３箇所と右側端縁熱接着部２Ｂの外縁の３箇所とからそれぞれ左右の側端縁熱接着部２Ａ、２Ｂの内縁に向う方向に進行して左・右側端縁熱接着部２Ａ、２Ｂの内縁にまで達しない位置で収斂しており包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに平行する上下方向の位相（位置）（たとえば、上部端縁熱接着部２Ｄの外縁からの距離）を同じくする３本の第１―１起点側収斂状切目線３０Ａ、３本の第１―１終点側収斂状切目線３０Ｂと、この第１―１起点側収斂状切目線３０Ａの収斂した点から、左・右側端縁熱接着部２Ａ、２Ｂに直交する左右方向に進行して、第１―１終点側収斂状切目線３０Ｂの収斂した点を一直線状で繋ぐ、第１−２中央直線状切目線３０Ｉとから構成される。さらに、図１２（ａ）（ｂ）に示すように、第１−２中央直線状切目線３０Ｉは、その中央部分の約１ｃｍ幅程度の加工深度の浅い部分３０Ｉ"と、その加工深度の浅い部分３０Ｉ"の左右両脇と連接する加工深度の深い部分３０Ｉ'から構成されている。   Further, the first cut line 3 formed in the outer layer 11 of the front wall laminate 10A (front side) that constitutes the packaging bag 1 has three locations on the outer edge of the left edge thermal bonding portion 2A and the right edge thermal bonding. Converge at positions that do not reach the inner edges of the left and right edge thermal bonding sections 2A, 2B from the three outer edges of the section 2B toward the inner edges of the left and right side edge thermal bonding sections 2A, 2B, respectively. The top and bottom phase (position) parallel to the left and right edge thermal bonding portions 2A and 2B of the packaging bag 1 (for example, the distance from the outer edge of the upper edge thermal bonding portion 2D) are the same. From the converged points of the first and first start-side converged cut lines 30A, the three first and first end-side converged cut lines 30B, and the first and first start-side converged cut lines 30A, the left and right ends Proceeding in the left-right direction orthogonal to the edge thermal bonding portions 2A, 2B, the convergence of the 1-1st end point side converged cut line 30B is achieved. Connected by a straight line to point to, composed of a 1-2 central linear score line 30I. Further, as shown in FIGS. 12 (a) and 12 (b), the 1-2 central straight cut line 30I includes a shallow portion 30I ″ having a processing depth of about 1 cm width in the central portion and a shallow processing depth. A portion 30I ′ having a deep processing depth connected to the left and right sides of the portion 30I ″ is formed.

さらに、包装袋１を構成する後壁用積層体１０Ｂ（奥側）の外層１１に形成された第２切目線３’は、左側端縁熱接着部２Ａの外縁の３箇所と右側端縁熱接着部２Ｂの外縁の３箇所とからそれぞれ左・右側端縁熱接着部２Ａ，２Ｂの内縁に向う方向に進行して左・右側端縁熱接着部２Ａ、２Ｂの内縁にまで達しない位置で収斂しており包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに平行する上下方向の位相（位置）（たとえば、上部端縁熱接着部２Ｄの外縁からの距離）を同じくする３本の第２―１起点側収斂状切目線３１Ａ、３本の第２―１終点側収斂状切目線３１Ｂと、この第２―１起点側収斂状切目線３１Ａの収斂した点から、左・右側端縁熱接着部２Ａ、２Ｂに直交する左右方向に進行して、第２―１終点側収斂状切目線３１Ｂの収斂した点を一直線状で繋ぐ、第２−２中央直線状切目線３１Ｊとから構成される。さらに、図１２（ａ）（ｂ）に示すように、第２―２中央直線状切目線３１Ｊは、その中央部分の約１ｃｍ幅程度の加工深度の浅い部分３１Ｊ"と、その加工深度の浅い部分３１Ｊ"の左右両脇と連接する加工深度の深い部分３１Ｊ'から構成されている。   Furthermore, the 2nd cut line 3 'formed in the outer layer 11 of the laminated body 10B (back side) which comprises the packaging bag 1 is three places of the outer edge of 2 A of left edge thermal bonding parts, and right edge heat. At a position that does not reach the inner edge of the left and right edge thermal bonding portions 2A, 2B from the three outer edge portions of the bonding portion 2B toward the inner edge of the left and right edge thermal bonding portions 2A, 2B, respectively. Three that converge and have the same phase (position) in the vertical direction parallel to the left and right edge thermal bonding portions 2A, 2B of the packaging bag 1 (for example, the distance from the outer edge of the upper edge thermal bonding portion 2D) From the converged points of the 2-1 starting point side converging cut line 31A, the three 2-1 end point side converging cutting lines 31B, and the 2-1 starting point side converging cutting line 31A, the left and right sides Proceeding in the left-right direction orthogonal to the edge thermal bonding portions 2A, 2B, the convergence of the 2-1 end point side converged cut line 31B is reached. Connected by a straight line to point to, composed of a 2-2 central linear score line 31J. Further, as shown in FIGS. 12A and 12B, the 2-2 central straight cut line 31J includes a shallow portion 31J "having a processing depth of about 1 cm width in the central portion and a shallow processing depth. A portion 31J ′ having a deep processing depth connected to the left and right sides of the portion 31J ″ is formed.

上記のように構成した包装袋１は、第１切目線３が交差する左側端縁熱接着部２Ａの左側（起点側）の外縁、たとえば、図１１上の左側から上端側の領域を手指で摘んで第１切目線３より手前に引裂くと、包装袋１の上端部を構成する２枚の積層体（前壁用積層体１０Ａ、後壁用積層体１０Ｂ）のうち、手前側の前壁用積層体１０Ａと奥側の後壁用積層体１０Ｂは、３本の第１―１起点側収斂状切目線３０Ａのいずれかと３本の第２―１起点側収斂状切目線３１Ａのいずれかとが一致するように一体的に引裂かれて起点側の収斂点に達し、これに追随する第１−２中央直線状切目線３０Ｉと第２−２中央直線状切目線３１Ｊとに沿って直線的に一体的に引き裂かれて、終点側の収斂点に達し、これに追随する３本の第１―１終点側収斂状切目線３０Ｂのいずれかと３本の第２―１終点側収斂状切目線３１Ｂのいずれかとが一致するように一体的に引裂かれて、図１１上の右側端縁熱接着部２Ｂの右側（終点側）外縁に達して開封される。引裂き開封線は直線のみからなるものであり、開封口についても美麗なものとすることができる。   The packaging bag 1 configured as described above has a finger on an outer edge on the left side (starting side) of the left edge thermal bonding portion 2A where the first cut line 3 intersects, for example, a region from the left side to the upper end side in FIG. When picked and torn to the near side from the first cut line 3, the front side of the two laminated bodies (the front wall laminated body 10A and the rear wall laminated body 10B) constituting the upper end portion of the packaging bag 1 The laminated body for wall 10A and the laminated body for rear wall 10B on the back side are either one of the three first-first origin-side convergent cut lines 30A and one of the three second-first origin-side convergent cut lines 31A. The heels are integrally torn so as to coincide with each other to reach the convergence point on the starting point side, and follow the 1-2 central straight cut line 30I and the 2-2 central straight cut line 31J following the straight line. Torn to reach the convergence point on the end point side, and the three first-first end side convergent cuts that follow this 30B and one of the three 2-1 end-point-side converged cut lines 31B are integrally torn so as to coincide with each other, and the right-hand side edge thermal bonding portion 2B on FIG. It reaches the outer edge and is opened. The tear opening line consists only of straight lines, and the opening can be made beautiful.

ここで、第１切目線３における第１−２中央直線状切目線３０Ｉに沿っての前壁用積層体１０Ａの引裂きは、左側の加工深度の深い部分３０Ｉ'（引裂き易い部分）に沿って、次に、中央部分の約１ｃｍ幅程度の加工深度の浅い部分３０Ｉ"（引裂き難い部分）に沿って、次に、右側の加工深度の深い部分３０Ｉ'（引裂き易い部分）に沿って進むが、加工深度の浅い部分３０Ｉ"（引裂き難い部分）は約１ｃｍ幅程度の中央部分に設けており、直線状で左右方向に平行なので、引裂き強度の違いはあるが、スムーズに引裂くことができる。また、第２切目線３’における第２−２中央直線状切目線３１Ｊに沿っての後壁用積層体１０Ｂの引裂きは、左側の加工深度の深い部分３１Ｊ'（引裂き易い部分）に沿って、次に、中央部分の約１ｃｍ幅程度の加工深度の浅い部分３１Ｊ"（引裂き難い部分）に沿って、次に、右側の加工深度の深い部分３１Ｊ'（引裂き易い部分）に沿って進むが、加工深度の浅い部分３１Ｊ"（引裂き難い部分）は約１ｃｍ幅程度の中央部分に設けており、直線状で左右方向に平行なので、引裂き強度の違いはあるが、スムーズに引裂くことができる。   Here, the tear of the front wall laminate 10A along the first-second central straight cut line 30I in the first cut line 3 is along the left portion 30I '(the portion that is easy to tear) with a deep processing depth. Next, the process proceeds along a shallow part 30I ″ (part that is difficult to tear) of about 1 cm width in the central part, and then along a right part 30I ′ (part that is easy to tear) on the right side. The shallow processing part 30I "(part that is difficult to tear) is provided in the center part of about 1cm width, and since it is linear and parallel to the left and right direction, it can be torn smoothly, although there is a difference in tearing strength. . In addition, tearing of the rear wall laminate 10B along the 2-2 central straight cut line 31J in the second cut line 3 ′ is along the left portion 31J ′ having a deep processing depth (a portion that is easy to tear). Next, the process proceeds along a shallow portion 31J ″ (a portion that is difficult to tear) of the center portion, which is approximately 1 cm wide, and then a right portion 31J ′ (a portion that is easy to tear) on the right side. The shallow processing depth 31J "(hard to tear) is provided in the central part of about 1cm width, and since it is straight and parallel to the left and right direction, there is a difference in tear strength, but it can be torn smoothly .

また、図示あるいは詳細な説明は省略するが、図１１において包装袋１の開封時に、図１１上の左側から上端側の領域を手指で摘んで第１切目線より奥側に引裂くと、手前に引裂いた場合と同様に引き裂かれて開封されるものである。   Although illustration or detailed description is omitted, when the packaging bag 1 is opened in FIG. 11, if the region on the upper end side from the left side in FIG. 11 is grasped with a finger and is torn away from the first cut line, the front side It is torn and opened in the same way as when it is torn.

また、図１３は本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第６実施形態を図解的に示す手前側から見た要部平面図であって、図１１においては第１切目線３（または第１切目線３’）のみを易開封手段（鋏やナイフ等の道具を用いることなく手だけで包装袋を開封するための弱化部）とし、第１−１起点側収斂状切目線３０Ａ（または、前記第２−１起点側収斂状切目線３１Ａ）のみを開封開始手段（引裂きを開始する端緒となる弱化部）としたものを示したが、図１３ではこれにＶ字状の切欠を組み合わせて易開封手段並びに開封開始手段とするものであり、第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の最も外側に存在する２本（図１３では中央の一本を挟み込む２本）が左側端縁熱接着部２Ａの左側（起点側）外縁と交差することで形成される三角領域内に、あるいは、第１−１終点側収斂状切目線３０Ｂ（または、第２−１終点側収斂状切目線３１Ｂ）の最も外側に存在する２本（図１３では中央の一本を挟み込む２本）が右側端縁熱接着部２Ｂの右側（終点側）外縁と交差することで形成される三角領域内に、Ｖ字状の切欠を設けることで、目の不自由な使用者であっても開封開始箇所を特定できる点においては視覚的に開封をより容易なものとすることができる。さらに、Ｖ字状の切欠の内側を向いた先端部（Ｖ字の折り返し点）が、第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の収斂点に近接することにより、Ｖ字状の切欠から引裂きを開始すれば、引裂き開封線はＶ字状の切欠の内側を向いた先端部から略直線的に第１−１起点側収斂状切目線３０Ａ（または、第２−１起点側収斂状切目線３１Ａ）の収斂点に達するので、機能的に開封をより容易なものとすることができる。   FIG. 13 is a plan view of an essential part seen from the front side schematically illustrating a sixth embodiment in which a V-shaped cutout is combined with a score line formed in the packaging bag according to the present invention. Uses only the first cut line 3 (or the first cut line 3 ′) as an easy opening means (a weakened part for opening the packaging bag by hand without using a tool such as a bag or knife), and 1-1 Although only the starting side convergent cut line 30A (or the 2-1 starting side convergent cut line 31A) is shown as an opening start means (a weakened part that starts tearing), FIG. This is combined with a V-shaped notch to form an easy-opening means and an opening-starting means. The first-first starting-side converged cut line 30A (or the second-first starting-side converged cut line 31A) The two outermost ones (two in the middle in Fig. 13) In the triangular region formed by crossing the left edge (starting side) outer edge of the left edge thermal bonding portion 2A, or the 1-1 end point side convergent cut line 30B (or the 2-1 end point side) The two outermost lines (the two that sandwich the central one in FIG. 13) on the outermost side of the convergent cut line 31B) are formed by intersecting the right edge (end point side) outer edge of the right edge thermal bonding part 2B. By providing a V-shaped notch in the triangular area, it is possible to make the opening easier visually in that the opening start location can be specified even by a visually impaired user. Furthermore, the front end portion (V-shaped folding point) facing the inside of the V-shaped notch is the first-first starting-side convergent cut line 30A (or the 2-1 starting-point-side convergent cutting line 31A). If tearing starts from the V-shaped notch by approaching the convergent point, the tear opening line is approximately straight from the leading end facing the inside of the V-shaped notch. Since the convergence point of the line of sight 30A (or the 2-1 starting point side convergent cut line 31A) is reached, the opening can be made functionally easier.

また、図１１においては、第１−２中央直線状切目線３０Ｉ、第２−２中央直線状切目線３１Ｊにおける中央部分の約１ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約１ｃｍ幅程度の箇所を加工深度の浅い部分３０Ｉ"、３１Ｊ"とし、その加工深度の浅い部分３０Ｉ"、３１Ｊ"の左右両脇と連接する加工深度の深い部分３０Ｉ'、３１Ｊ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｉ'、３１Ｊ'）、次に引裂き難い部分（３０Ｉ"、３１Ｊ"）、次に引裂き易い部分（３０Ｉ'、３１Ｊ'）と引裂き強度が変化するものを示したが、図１３では、第１−２中央直線状切目線３０Ｉ、第２−２中央直線状切目線３１Ｊにおける中央部分の約２ｃｍ幅程度（少し長幅とする）の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約２ｃｍ幅程度の箇所を間欠状カット部分３０Ｉ"、３１Ｊ"とし、その間欠状カット部分３０Ｉ"、３１Ｊ"の左右両脇と連接する連続状カット部分３０Ｉ'、３１Ｊ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｉ'、３１Ｊ'）、次に引裂き難い部分（３０Ｉ"、３１Ｊ"）、次に引裂き易い部分（３０Ｉ'、３１Ｊ'）と引裂き強度が変化するものを示している。具体的には、図１３では、第１−２中央直線状切目線３０Ｉは、その中央部分の約２ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３０Ｉ"と、その間欠状カット部分３０Ｉ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３０Ｉ'から構成されている。第２―２中央直線状切目線３１Ｊは、その中央部分の約２ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３１Ｊ"と、その間欠状カット部分３１Ｊ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３１Ｊ'から構成されている。   Further, in FIG. 11, the tear strength of a portion having a width of about 1 cm in the central portion of the 1-2 central straight cut line 30 </ b> I and the 2-2 central straight cut line 31 </ b> J is relatively higher than the other portions. In order to increase the height (to make it difficult to tear), a portion having a width of about 1 cm in the central portion is defined as a portion 30I ", 31J" having a shallow processing depth, and is connected to both left and right sides of the portions 30I ", 31J" having a shallow processing depth. By providing the deep working depth portions 30I ′ and 31J ′, as tearing proceeds from the left side to the right side, portions that are easy to tear (30I ′, 31J ′), and then portions that are difficult to tear (30I ″, 31J ″), Next, the tearable portions (30I ′, 31J ′) and those in which the tear strength changes are shown, but in FIG. 13, in the 1-2 central straight cut line 30I and the 2-2 central straight cut line 31J. About 2 in the center In order to increase the tear strength of a portion having a width of about m (a little longer) relative to other portions (making it difficult to tear), a portion having a width of about 2 cm in the center portion is formed as an intermittent cut portion 30I. ", 31J", and by providing continuous cut portions 30I ', 31J' connected to the left and right sides of the intermittent cut portions 30I ", 31J", portions that are easy to tear as tearing progresses from left to right (30I ′, 31J ′), the next hard to tear portion (30I ″, 31J ″), the next easy tear portion (30I ′, 31J ′), and the one whose tear strength changes. Specifically, in FIG. 13, the 1-2 central straight cut line 30I is an intermittent cut portion 30I "in which cut portions and uncut portions having a width of about 2 cm in the central portion are alternately arranged. The intermittent cut portion 30I ″ includes a continuous cut portion 30I ′ in which only cut portions connected to the left and right sides of the intermittent cut portion 30I ″ are continuously arranged. The 2-2 central straight cut line 31J includes an intermittent cut portion 31J "in which cut portions and uncut portions having a width of about 2 cm in the central portion are alternately arranged, and the intermittent cut portion 31J". Only a cut portion connected to the left and right sides is constituted by a continuous cut portion 31J ′ arranged continuously.

なお、図１１、図１３に示す第５〜第６実施形態は、共通の概念で包括して表現すれば、以下の特徴的構成を備えている。   In addition, the fifth to sixth embodiments shown in FIGS. 11 and 13 have the following characteristic configuration if expressed in a comprehensive manner by a common concept.

第一に、外層とアルミニウムからなる中間層と熱接着性樹脂からなる内層とを少なくとも有する積層体からなる前壁シートと後壁シートの内層面を対向して配置し、当該前壁シートと後壁シートの下端部に熱接着性樹脂からなる内層を少なくとも有する積層体からなる底壁シートを内層面を外面にして中央で山折りして挿入し、前記前壁シートの内層面と前記後壁シートの内層面に対して対向する山折りした前記底壁シートの外面とを前記底壁シートの周縁部にてヒートシールして底部端縁熱接着部を形成し、前記前壁シートの内層面に対向する前記後壁シートの内層面同士を左右の側端縁をヒートシールして左右の側端縁熱接着部を形成してなる包装袋である。   First, the front wall sheet composed of a laminate having at least an outer layer, an intermediate layer composed of aluminum, and an inner layer composed of a heat-adhesive resin is disposed so that the inner layer surfaces of the rear wall sheet face each other. A bottom wall sheet made of a laminate having at least an inner layer made of a heat-adhesive resin at the lower end of the wall sheet is inserted by folding in the center with the inner layer surface as the outer surface, and the inner layer surface and the rear wall of the front wall sheet The outer surface of the folded bottom wall sheet facing the inner layer surface of the sheet is heat-sealed at the periphery of the bottom wall sheet to form a bottom edge thermal bonding portion, and the inner layer surface of the front wall sheet It is a packaging bag formed by heat-sealing the left and right side edges of the inner wall surfaces of the rear wall sheet opposed to each other to form the left and right side edge thermal bonding portions.

第二に、前記前壁シートの外層に、前記左の側端縁熱接着部の外縁を起点として、当該起点と前記左右の側端縁熱接着部に平行する方向の位置を同じくする前記右の側端縁熱接着部の外縁を終点として連続する第１切目線を形成し、前記後壁シートの外層に、前記左の側端縁熱接着部の外縁を起点として、当該起点と前記左右の側端縁熱接着部に平行する方向の位置を同じくする前記右の側端縁熱接着部の外縁を終点として連続する第２切目線を形成し、前記包装袋の平面視状態における前記第１切目線と前記第２切目線の形成位置を一致するものとすることで、前記第１切目線と前記第２切目線に沿って前記包装袋の上端側を前記左右の側端縁熱接着部に直交する方向に引裂き開口した際に、引裂き開口部を形成する前記前壁シートの切断面の外郭と前記後壁シートの切断面の外郭とを一致ならしめることで、引裂き開口部に段差を生じさせない包装袋である。   Second, on the outer layer of the front wall sheet, starting from the outer edge of the left side edge thermal bonding portion, the right side having the same position in the direction parallel to the starting edge and the left and right side edge thermal bonding portions Forming a first cut line that continues from the outer edge of the side edge thermal bonding portion as an end point, and the outer layer of the rear wall sheet starts from the outer edge of the left side edge thermal bonding portion as the starting point and the left and right sides Forming a second cut line that continues from the outer edge of the right side edge thermal bonding portion that has the same position in the direction parallel to the side edge thermal bonding portion of the packaging bag as an end point. By forming the first cut line and the second cut line at the same position, the upper and lower side edge thermal bonding of the upper end side of the packaging bag along the first cut line and the second cut line is performed. Cutting the front wall sheet that forms a tear opening when a tear opening is made in a direction perpendicular to the section By outer and occupy not match the outline of the cut surface of the rear wall sheets, a packaging bag that does not cause a step in the tear-open portion.

第三に、前記第１切目線は、起点から前記左の端縁熱接着部の内縁に向う方向に進行して起点側の前記左の側端縁熱接着部の内縁にまで達しない位置で収斂する起点側の複数本の切目線と、終点から前記右の側端縁熱接着部の内縁に向う方向に進行して終点側の前記右の側端縁熱接着部の内縁にまで達しない位置で収斂する終点側の複数本の切目線と、前記起点側の複数本の切目線の収斂した点から前記左右の側端縁熱接着部に直交する方向に進行して前記終点側の複数本の切目線の収斂した点に達する中央側の一本の切目線と、から構成されており、前記第２切目線は、起点から前記左の端縁熱接着部の内縁に向う方向に進行して起点側の前記左の側端縁熱接着部の内縁にまで達しない位置で収斂する起点側の複数本の切目線と、終点から前記右の側端縁熱接着部の内縁に向う方向に進行して終点側の前記右の側端縁熱接着部の内縁にまで達しない位置で収斂する終点側の複数本の切目線と、前記起点側の複数本の切目線の収斂した点から前記左右の側端縁熱接着部に直交する方向に進行して前記終点側の複数本の切目線の収斂した点に達する中央側の一本の切目線と、から構成されている包装袋である。   Third, the first cut line is a position that proceeds from the starting point toward the inner edge of the left edge thermal bonding portion and does not reach the inner edge of the left side edge thermal bonding portion on the starting point side. A plurality of cut lines on the starting point side that converge, and the direction from the end point toward the inner edge of the right side edge thermal bonding portion, do not reach the inner edge of the right side edge thermal bonding portion on the end point side A plurality of cut lines on the end point side that converge at the position and a plurality of cut lines on the end point side that proceed in a direction orthogonal to the left and right side edge thermal bonding portions from the converged points of the plurality of cut lines on the start point side A central score line that reaches a converged point of the score lines, and the second score line proceeds in a direction from the starting point toward the inner edge of the left edge thermal bonding portion. From the left side edge on the starting point side, a plurality of score lines on the starting point side that converge at a position that does not reach the inner edge of the thermal bonding portion, and from the end point A plurality of score lines on the end point side that converge in a position that does not reach the inner edge of the right side edge thermal bonding portion on the end point side, proceeding in the direction toward the inner edge of the right side edge thermal bonding portion; A central one that reaches from the converged points of the plurality of score lines on the starting point in a direction orthogonal to the left and right side edge thermal bonding portions and reaches the converged points of the plurality of score lines on the end point side. It is the packaging bag comprised from the score line of a book.

第四に、前記第１切目線に沿った前記前壁シートの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定され、前記第２切目線に沿った前記後壁シートの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定されている包装袋である。   Fourth, the tear wall strength of the center portion of the front wall sheet along the first cut line is set to be relatively higher than the tear strength of other parts, and the rear wall along the second cut line This is a packaging bag in which the tear strength of the central portion of the sheet is set relatively higher than the tear strength of the other portions.

これらの４つの特徴的構成を備える図１１、図１３に示す第５〜第６実施形態は、特に第一から第三の特徴的構成を備えることにより、容易に引き裂いて開封することができる。具体的には、包装袋の第１切目線を備える面を手前に向けて、第１切目線より上端側の領域を手指で摘んで手前に引裂くと、逆に、第１切目線より上端側の領域を摘んで奥側に引裂くと、包装袋の上端側の領域を構成する前壁シートと後壁シートのうち、手前側の前壁シートと奥側の後壁シートは起点側の複数本の切目線のいずれかと、これに追随する一本の切目線と、これに追随する終点側の複数本の切目線のいずれかに沿って一致する引裂き線が形成されるので、切目線から外れることなく引裂くことができ、引き裂いて開封した際の引裂き開口部が前後で揃って美麗である開口を開くことができるスタンディングタイプの包装袋となる。さらに、第一から第三の特徴的構成を備えることにより、切目線が左右の側端縁側を除いて一直線状となるので、第４の特徴的構成つまり引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定されている前壁および後壁シートの中央部を幅広くすること、例えば、２ｃｍを超えて３ｃｍ、４ｃｍ、とすることも可能となり、破れ防止の実効をより高めることができる。図１１、図１３に示す第５〜第６実施形態は、これらの４つの特徴的構成を備える範囲内で種々のバリエーションが可能である。   The fifth to sixth embodiments shown in FIGS. 11 and 13 having these four characteristic configurations can be easily torn and opened by providing the first to third characteristic configurations. Specifically, when the surface of the packaging bag with the first cut line is directed toward the front, the region on the upper end side from the first cut line is picked with a finger and torn toward the front, on the contrary, the upper end from the first cut line is reversed. When the side region is picked and torn to the back side, the front wall sheet on the near side and the back wall sheet on the back side of the front wall sheet and the rear wall sheet constituting the upper end side region of the packaging bag are A tear line is formed along one of the multiple cut lines, a single cut line that follows the cut line, and a plurality of cut lines on the end point side that follows the cut line. It becomes a standing type packaging bag that can be opened without tearing, and can be opened with a tearing opening portion that is aligned in the front and rear direction when opened by tearing. Further, by providing the first to third characteristic configurations, the cut line is straight except for the left and right side edges, so that the fourth characteristic configuration, that is, the tear strength is the tear strength of the other part. It is also possible to widen the center part of the front wall and the rear wall sheet, which are set relatively higher than, for example, 3 cm to 4 cm exceeding 2 cm, and to further enhance the effectiveness of preventing tearing. it can. The fifth to sixth embodiments shown in FIG. 11 and FIG. 13 can be variously modified within the range having these four characteristic configurations.

これまで説明してきた包装袋１の第１〜第６実施形態のように、第１切目線３と第２切目線３’が左右の側端縁熱接着部２Ａ、２Ｂの外縁を起点として内側（左右方向）に延伸して左右の側端縁熱接着部の内端縁に達する直線状の切目線を備える場合、例えば、図４の第１実施形態、図６の第２実施形態、図７の第３実施形態、図８の第４実施形態における３本の第１―１起点側収斂状切目線３０Ａのうちの真ん中の１本、第１−２起点側直線状切目線３０Ｃの左端側の一部、第１−２終点側直線状切目線３０Ｄの右端側の一部、３本の第１―１終点側収斂状切目線３０Ｂのうちの真ん中の１本、３本の第２―１起点側収斂状切目線３１Ａのうちの真ん中の１本、第２−２起点側直線状切目線３１Ｃの左端側の一部、第２−２終点側直線状切目線３１Ｄの右端側の一部、３本の第２―１終点側収斂状切目線３１Ｂのうちの真ん中の１本がこれに相当しており、図１１の第５実施形態、図１３の第６実施形態における３本の第１―１起点側収斂状切目線３０Ａのうちの真ん中の１本、第１−２中央直線状切目線３０Iの左端側の一部と右端側の一部、３本の第１―１終点側収斂状切目線３０Ｂのうちの真ん中の１本、３本の第２―１起点側収斂状切目線３１Ａのうちの真ん中の１本、第２−２中央直線状切目線３１Jの左端側の一部と右端側の一部、３本の第２―１終点側収斂状切目線３１Ｂのうちの真ん中の１本がこれに相当しており、これらの直線状の切目線は左右の側端縁熱接着部２Ａ、２Ｂを構成する前壁用積層体１０Ａの外層１１の切目線と後壁用積層体１０Ｂの外層１１の切目線が略一致しているので、この左右の側端縁熱接着部２Ａ、２Ｂに形成された直線状の切目線の箇所で包装袋の上端側が折れ曲がりが発生して、商品（包装袋に内容物を封入して封緘したもの）の見栄えが非常に悪くなり、包装袋としては返品の対象となる可能性が若干高まる方向に影響することが考えられる。そこで、これらのアルミ割れ対策を勘案した包装袋が、後述する、図１４、図１５、図１６に示す包装袋である。   As in the first to sixth embodiments of the packaging bag 1 described so far, the first cut line 3 and the second cut line 3 'are the inner sides starting from the outer edges of the left and right side edge thermal bonding portions 2A, 2B. In the case of including straight cut lines that extend in the (left-right direction) and reach the inner edge of the left and right side edge thermal bonding portions, for example, the first embodiment of FIG. 4, the second embodiment of FIG. 7 in the third embodiment, one in the middle of the three first-first origin-side convergent score lines 30A in the fourth embodiment in FIG. 8, the left end of the first-second origin-side linear score line 30C Part of the side, part of the right end side of the first-to-end-end-point-side straight cut line 30D, middle one of the three first-first end-point-side converging-like cut lines 30B, and the third second -The middle one of the starting point side convergent cut lines 31A, the part of the left end side of the 2-2 starting point side straight cut line 31C, the 2-2 end point side linear cut A part of the right end side of the line 31D and one of the middle of the three 2-1 end-point-side convergent cut lines 31B correspond to this, the fifth embodiment of FIG. The middle one of the three first-first origin-side convergent cut lines 30A in the sixth embodiment, a part on the left end side and a part on the right end side of the first-second central straight cut line 30I, 3 One in the middle of the first 1-1 end side converging cut lines 30B, one in the middle of the three 2-1 starting side converging cut lines 31A, and the 2-2 central straight line A part on the left end side of the cut line 31J, a part on the right end side, a middle one of the three 2-1 end point side convergent cut lines 31B correspond to this, and these straight lines The cut line is the cut line of the outer layer 11 of the laminate 10A for the front wall and the cut of the outer layer 11 of the laminate 10B for the rear wall that constitute the left and right side edge thermal bonding portions 2A and 2B. Since the line of sight substantially coincides, the upper end side of the packaging bag is bent at the position of the linear cut line formed on the left and right side edge thermal bonding portions 2A, 2B, and the product (the contents on the packaging bag) It can be considered that the appearance of the product enclosed and sealed) is very bad, and the packaging bag is likely to be slightly more likely to be returned. Therefore, the packaging bags taking into account these aluminum cracking countermeasures are the packaging bags shown in FIGS. 14, 15, and 16, which will be described later.

図１４は、本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第７実施形態を図解的に示す手前側から見た要部平面図であって、図１３の第６実施形態と比べて、第１切目線３の両脇部分を構成する第１―１起点側収斂状切目線３０Ａ及び第１―１終点側収斂状切目線３０Ｂ、第２切目線３’の両脇部分を構成する第２―１起点側収斂状切目線３１Ａ及び第２―１終点側収斂状切目線３１Ｂが、中央の１本がない「くの字」状の２本となっており、さらに位置が内側にシフトしており、さらにこのシフト分だけ、第１切目線３の第１−２中央直線状切目線３０I、第２切目線３’の第２−２中央直線状切目線３０Jが短くなっている点を除けば、図１３の第６実施形態と同じであり、左側（起点側）のＶ字状の切欠Ｎ１と第１切目線３との相対的な位置関係、右側（終点側）のＶ字状の切欠Ｎ１と第１切目線３との相対的な位置関係については、同じである。   FIG. 14 is a plan view of an essential part viewed from the front side schematically illustrating a seventh embodiment in which a V-shaped notch is combined with a score line formed in a packaging bag according to the present invention. Compared with the sixth embodiment, the first-first start-side converged cut line 30A, the first-first end-point-side converged cut line 30B, and the second cut line 3 ′ constituting both sides of the first cut line 3 are compared. The 2-1 starting point side converging cut line 31A and the 2-1 end point side converging cut line 31B constituting the both side portions are two "shaped" shapes having no central one. Further, the position is further shifted inward, and by this shift, the first-second central straight cut line 30I of the first cut line 3 and the second-second central straight cut line of the second cut line 3 ′ are further shifted. Except for the point that 30J is shortened, it is the same as that of the sixth embodiment of FIG. 13, and the left (starting side) V-shaped notch N1 and The relative positional relationship between the score line 3, right about the relative positional relationship between the V-shaped notch N1 and the first score line 3 (end point) is the same.

図１４の第７実施形態では、図１３の第６実施形態と比べて、包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに形成された切目線が、２本の第１―１起点側収斂状切目線３０Ａ、２本の第１―１終点側収斂状切目線３０Ｂ、２本の第２―１起点側収斂状切目線３１Ａ、２本の第２―１終点側収斂状切目線３１Ｂの一部分であり長さが短い点、左右方向に平行な中央の１本が存在していない点、上端側の折れ曲がりやアルミ割れが発生しやすい構成である左右方向に伸びる切目線である１本の第１−２中央直線状切目線３０I、１本の第２−２中央直線状切目線３０Jが包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに存在しない点において、図１３の第６実施形態と比べて、切目線を形成した位置で、上端側の折れ曲がりやアルミ割れがより発生し難くなっている。   In the seventh embodiment shown in FIG. 14, the cut lines formed in the left and right edge thermal bonding portions 2A and 2B of the packaging bag 1 are two pieces of 1-1 as compared with the sixth embodiment shown in FIG. Starting side convergent cut line 30A, two first-first end-point converged cut lines 30B, two second-first start-side converged cut lines 31A, two second-first end-side converged cut lines It is a part of the line of sight 31B, a short length, a point where there is no central one parallel to the left-right direction, and a cut line extending in the left-right direction, which is a configuration in which bending or aluminum cracking on the upper end side is likely to occur. In the point that one 1st-2 center straight cut line 30I and one 2nd-2 center straight cut line 30J do not exist in the left and right edge thermal bonding portions 2A, 2B of the packaging bag 1, Compared with the sixth embodiment of the thirteen, bending at the upper end side and aluminum cracking occur more at the position where the score line is formed. Kuna' to have.

なお、図１４の第７実施形態では、第１−２中央直線状切目線３０Ｉ、第２−２中央直線状切目線３１Ｊにおける中央部分の約２ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約２ｃｍ幅程度の箇所を間欠状カット部分３０Ｉ"、３１Ｊ"とし、その間欠状カット部分３０Ｉ"、３１Ｊ"の左右両脇と連接する連続状カット部分３０Ｉ'、３１Ｊ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｉ'、３１Ｊ'）、次に引裂き難い部分（３０Ｉ"、３１Ｊ"）、次に引裂き易い部分（３０Ｉ'、３１Ｊ'）と引裂き強度が変化するものを示している。具体的には、図１４では、第１−２中央直線状切目線３０Ｉは、その中央部分の約２ｃｍ幅程度のカット部とアンカット部が交互に配置されて成る間欠状カット部分３０Ｉ"と、その間欠状カット部分３０Ｉ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３０Ｉ'から構成されている。第２―２中央直線状切目線３１Ｊは、その中央部分の約２ｃｍ幅程度の箇所がカット部とアンカット部が交互に配置されて成る間欠状カット部分３１Ｊ"と、その間欠状カット部分３１Ｊ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３１Ｊ'から構成されており、この点は、図１３の第６実施形態と同じであり、後述する図１５の第８実施形態も、図１６の第９実施形態も同様である。   In the seventh embodiment shown in FIG. 14, the center portion of the first-second central straight cut line 30I and the second-second central straight cut line 31J is about 2 cm wider than the other portions. In order to increase the tear strength (to make it difficult to tear), the central portion of the central portion is defined as an intermittent cut portion 30I ", 31J", and left and right sides of the intermittent cut portion 30I ", 31J". By providing continuous cut portions 30I ′ and 31J ′ that are connected to each other, as tearing proceeds from the left side to the right side, portions that are easy to tear (30I ′, 31J ′) and then portions that are difficult to tear (30I ″, 31J ″) Next, portions that are easy to tear (30I ′, 31J ′) and those in which the tear strength changes are shown. Specifically, in FIG. 14, the first-second central straight cut line 30I is an intermittent cut portion 30I "in which cut portions and uncut portions having a width of about 2 cm in the central portion are alternately arranged. The intermittent cut portion 30I ″ includes a continuous cut portion 30I ′ in which only cut portions connected to the left and right sides of the intermittent cut portion 30I ″ are continuously arranged. The 2-2 central straight cut line 31J includes an intermittent cut portion 31J "in which a cut portion and an uncut portion are alternately arranged at a location of about 2 cm width in the central portion, and the intermittent cut portion 31J. Only the cut portions connected to the left and right sides of the continuous cut portion 31J 'are arranged continuously. This is the same as the sixth embodiment of FIG. 13, and will be described later. The eighth embodiment of 15 is the same as the ninth embodiment of FIG.

また、図１４の第７実施形態においては、第１−２中央直線状切目線３０Ｉ、第２−２中央直線状切目線３１Ｊにおける中央部分の約２ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約２ｃｍ幅程度の箇所を加工深度の浅い部分３０Ｉ"、３１Ｊ"とし、その加工深度の浅い部分３０Ｉ"、３１Ｊ"の左右両脇と連接する加工深度の深い部分３０Ｉ'、３１Ｊ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｉ'、３１Ｊ'）、次に引裂き難い部分（３０Ｉ"、３１Ｊ"）、次に引裂き易い部分（３０Ｉ'、３１Ｊ'）と引裂き強度が変化するものを採用してもよく、この点は、後述する図１５の第８実施形態も、図１６の第９実施形態も同様である。   Further, in the seventh embodiment of FIG. 14, the location of about 2 cm width of the central portion in the 1-2 central straight cut line 30I and the 2-2 central straight cut line 31J is made more than the other portions. In order to relatively increase the tear strength (to make it difficult to tear), a portion having a width of about 2 cm in the central portion is defined as portions 30I "and 31J" having a shallow processing depth, and portions 30I "and 31J" having a shallow processing depth are provided. By providing deep working depth portions 30I 'and 31J' connected to the left and right sides, as tearing progresses from the left side to the right side, portions that are easy to tear (30I ', 31J') and then portions that are difficult to tear (30I " , 31J "), and a portion that can be easily torn next (30I ', 31J') and one whose tear strength changes may be adopted. This is also the case with the eighth embodiment shown in FIG. The same applies to the ninth embodiment.

図１５は、本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第８実施形態を図解的に示す手前側から見た要部平面図であって、図１４の第７実施形態と比べて、第１切目線３の両脇部分を構成する２本の第１―１起点側収斂状切目線３０Ａ及び２本の第１―１終点側収斂状切目線３０Ｂ、第２切目線３'の両脇部分を構成する２本の第２―１起点側収斂状切目線３１Ａ及び２本の第２―１終点側収斂状切目線３１Ｂの位置が内側にシフトしており、このシフト分だけ、第１切目線３の第１−２中央直線状切目線３０I、第２切目線３'の第２−２中央直線状切目線３０Jが短くなっている点を除けば、図１４の第６実施形態と同じであり、左側（起点側）のＶ字状の切欠Ｎ１と第１切目線３との相対的な位置関係、右側（終点側）のＶ字状の切欠Ｎ１と第１切目線３との相対的な位置関係については、同じである。図１５の第８実施形態では、図１４の第７実施形態と比べて、包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに形成された切目線が存在しない点において、図１４の第７実施形態と比べて、切目線を形成した位置で、上端側の折れ曲がりやアルミ割れがより発生し難くなっている。   FIG. 15 is a plan view of a principal part seen from the front side schematically illustrating an eighth embodiment in which a V-shaped notch is combined with a cut line formed in the packaging bag according to the present invention, Compared with the seventh embodiment, the two first 1-1 starting side converging cut lines 30A and the two first 1-1 end side converging cutting lines 30B constituting the both side portions of the first cutting line 3; The positions of the two 2-1 start-point-side convergent cut lines 31A and the two 2-1 end-point-side convergent cut lines 31B that constitute both sides of the second cut line 3 'are shifted inward. , Except that the 1-2 center straight cut line 30I of the first cut line 3 and the 2-2 central straight cut line 30J of the second cut line 3 ′ are shortened by this shift, 14 is the same as that of the sixth embodiment in FIG. 14, and the relative positional relationship between the V-shaped notch N1 on the left side (starting side) and the first cut line 3, the right side (end point). The relative positional relationship between the V-shaped notch N1 and the first cut line 3 is the same. In the eighth embodiment of FIG. 15, compared to the seventh embodiment of FIG. 14, there is no score line formed in the left and right edge thermal bonding portions 2 </ b> A and 2 </ b> B of the packaging bag 1, as shown in FIG. 14. Compared with the seventh embodiment, bending or aluminum cracking on the upper end side is less likely to occur at the position where the score line is formed.

図１６は、本発明にかかる包装袋に形成する切目線にＶ字状の切欠を組み合わせた第９実施形態を図解的に示す手前側から見た要部平面図であって、図１５の第８実施形態と比べて、第１切目線３の両脇部分を構成する２本の第１―１起点側収斂状切目線３０Ａ及び２本の第１―１終点側収斂状切目線３０Ｂ、第２切目線３'の両脇部分を構成する２本の第２―１起点側収斂状切目線３１Ａ及び２本の第２―１終点側収斂状切目線３１Ｂの位置が内側にシフトしており、このシフト分だけ、第１切目線３の第１−２中央直線状切目線３０I、第２切目線３'の第２−２中央直線状切目線３０Jが短くなっている点を除けば、図１５の第８実施形態と同じであり、左側（起点側）のＶ字状の切欠Ｎ１と第１切目線３との相対的な位置関係、右側（終点側）のＶ字状の切欠Ｎ１と第１切目線３との相対的な位置関係については、同じである。   FIG. 16 is a plan view of an essential part seen from the front side schematically illustrating a ninth embodiment in which a V-shaped notch is combined with a score line formed in a packaging bag according to the present invention. Compared to the eighth embodiment, the two first-first start-side converged cut lines 30A and the two first-first end-point converged cut lines 30B constituting the both sides of the first cut line 3 The positions of the two 2-1 start-point-side convergent cut lines 31A and the two 2-1 end-point-side convergent cut lines 31B that constitute both sides of the second cut line 3 'are shifted inward. , Except that the 1-2 center straight cut line 30I of the first cut line 3 and the 2-2 central straight cut line 30J of the second cut line 3 ′ are shortened by this shift, The same as the eighth embodiment of FIG. 15, the relative positional relationship between the left (starting side) V-shaped notch N1 and the first cut line 3, the right side (end point). The relative positional relationship between the V-shaped notch N1 and the first cut line 3 is the same.

図１５の第８実施形態では、切目線の形成位置が左右にぶれてしまった場合、包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに切目線が発生する可能性があるが、図１６の第９実施形態では、左・右側端縁熱接着部２Ａ、２Ｂから第１切目線３の起点及び終点、第２切目線３'の起点及び終点に至るクリアランス部分の存在により、このようなぶれが生じたとしても、包装袋１の左・右側端縁熱接着部２Ａ、２Ｂに切目線が発生するには至らない。この点で、図１５の第８実施形態と比べて、切目線を形成した位置で、上端側の折れ曲がりやアルミ割れがより発生し難くなっている。   In the eighth embodiment of FIG. 15, when the formation position of the score line has shifted to the left and right, there is a possibility that a score line will occur in the left and right edge thermal bonding portions 2A, 2B of the packaging bag 1, In the ninth embodiment of FIG. 16, due to the presence of clearance portions from the left and right edge thermal bonding portions 2A, 2B to the starting and ending points of the first cut line 3 and the starting and ending points of the second cut line 3 ′, Even if such blurring occurs, the cut line does not occur at the left and right edge thermal bonding portions 2A, 2B of the packaging bag 1. In this regard, compared to the eighth embodiment of FIG. 15, the upper end side bend and aluminum cracks are less likely to occur at the position where the score line is formed.

なお、図７、図１３、図１４、図１５、図１６においてはＶ字状の切欠を、図８においてはＵ字状の切欠を示しているが、視覚的にも機能的にも開封をより容易なものとする手段としては、これらに限定されるものではなく、Ｉ字状、Ｖ字状、Ｕ字状、亀甲状等の切欠であってもよく、微小な打ち抜き孔を多数形成した傷痕群を設けることでも、視覚的にも機能的にも開封をより容易なものとすることができる。   7, 13, 14, 15, and 16 show a V-shaped notch, and FIG. 8 shows a U-shaped notch. Means for making it easier is not limited to these, and may be notches such as I-shape, V-shape, U-shape, turtle shell shape, etc., and a large number of minute punched holes are formed. Opening can be made easier both visually and functionally by providing a group of scars.

なお、図４、図７においては、第１−３上端側切目線３０Ｅと第１−３下端側切目線３０Ｆを円弧状の形状とし、図６、図８においては、第１−３上端側切目線３０Ｇと第１−３下端側切目線３０Ｈを略コの字状の形状としたものを例示したが、第１−３上端側切目線と第１−３下端側切目線は、これに限るものではなく、略への字状等の形状であってもよいし、第１−３上端側切目線と第１−３下端側切目線の形状を異なるものとしてもよいものである。   In FIGS. 4 and 7, the 1-3 upper end cut line 30E and the 1-3 lower end cut line 30F have an arcuate shape. In FIGS. 6 and 8, the 1-3 upper end side. The cut line 30G and the 1-3 lower end side cut line 30H are illustrated in a substantially U-shape, but the 1st-3 upper end side cut line and the 1st-3 lower end side cut line are The shape is not limited, and may be a substantially round shape, or the shapes of the first to third upper end side cut lines and the first to third lower end side cut lines may be different.

なお、図１４〜図１６に示したアルミ割れ対策を施した切目線は左右両脇部分を除き一直線状の第１−２中央直線状切目線３０I、第２−２中央直線状切目線３０Jを採用しているが、図４、図６、図７、図８のように、中央側で上下に分離する形状を採用してもよいものである。   14 to 16, the cut lines with the countermeasure against aluminum cracking are the straight 1-2 central straight cut lines 30I and 2-2 central straight cut lines 30J except for the left and right sides. Although employed, it is also possible to employ a shape that separates up and down at the center side as shown in FIGS. 4, 6, 7, and 8.

また、第１−２起点側直線状切目線３０Ｃと第１−２終点側直線状切目線３０Ｄのそれぞれの終端を繋ぐ図４、図７の第１−３上端側切目線３０Ｅと第１−３下端側切目線３０Ｆ、あるいは、図６、図８の第１−３上端側切目線３０Ｇと第１−３下端側切目線３０Ｈをそれぞれ一本の切目線で示したが、一本に限ることはなくそれぞれを複数本から構成してもよいし、上端側と下端側で本数を異にしてもよいものである。また、複数本設ける場合の切目線の間隔は１ｍｍ以下が望ましい。なお、第１切目線３と第２切目線３’の引裂き開口部における段差は６ｍｍ以上になるように設計するのが包装袋１を構成する積層体の一方（手前側）と他方（奥側）を容易に手指で摘むことができる点から好ましいものである。   Also, the first-third upper-end cut line 30E and the first-first cut-line 30E in FIG. 4 and FIG. 7 are respectively connected to the terminal ends of the first-second start-point-side straight cut line 30C and the first-second end-point-side straight cut line 30D. 3 lower cut line 30F, or the 1-3 upper cut line 30G and 1-3 lower cut line 30H in FIGS. 6 and 8 are shown as one cut line, but only one cut line is shown. However, each of them may be composed of a plurality of pieces, or the number may be different between the upper end side and the lower end side. Further, the interval between the score lines when a plurality of lines are provided is preferably 1 mm or less. In addition, it is designed so that the level | step difference in the tear opening part of the 1st cut line 3 and 2nd cut line 3 'may be 6 mm or more, one side (front side) of the laminated body which comprises the packaging bag 1, and the other (back side) ) Is preferable because it can be easily picked with fingers.

また、図４、図６、図７、図８、図１１、図１３において第１−１起点側収斂状切目線３０Ａと第１−１終点側収斂状切目線３０Ｂと第２−１起点側収斂状切目線３１Ａと第２−１終点側収斂状切目線３１Ｂとを、左側端縁熱接着部２Ａの外縁の３箇所と右側端縁熱接着部２Ｂの外縁の３箇所とからそれぞれ左・右側端縁熱接着部２Ａ、２Ｂの内縁に向う方向に進行して左・右側端縁熱接着部２Ａ、２Ｂの内縁にまで達しない位置で１点に収斂する３本仕様にしたが、図１４、図１５、図１６のように中央の一本を抜いて、左側端縁熱接着部２Ａの外縁の２箇所と右側端縁熱接着部２Ｂの外縁の２箇所とからそれぞれ左・右側端縁熱接着部２Ａ、２Ｂの内縁に向う方向に進行して左・右側端縁熱接着部２Ａ、２Ｂの内縁にまで達しない位置で１点に収斂する２本仕様としてもよく、中央の一本を抜く場合には、２本仕様以外に４本仕様、６本仕様と偶数本のバリエーションが可能であり、中央の一本を抜かない場合には、３本仕様以外に５本仕様、７本仕様と奇数本のバリエーションが可能であり、起点側と終点側で本数が異なるものとすることも可能であるが、いずれのバリエーションにおいても、左・右側端縁熱接着部２Ａ、２Ｂの内縁にまで達しない位置で１点に収斂することには変わりがない。   4, FIG. 6, FIG. 7, FIG. 8, FIG. 11 and FIG. 13, the 1-1 start point side convergent cut line 30A, the 1-1 end point side converged cut line 30B, and the 2-1 start point side. The convergent cut line 31A and the (2-1) end-point-side converged cut line 31B are respectively separated from the left and right ends of the outer edge of the left edge thermal bonding portion 2A and the outer edge of the right edge thermal bonding portion 2B. The three-point specification converges to one point at a position that does not reach the inner edges of the left and right edge thermal bonding portions 2A, 2B by proceeding in the direction toward the inner edge of the right edge thermal bonding portions 2A, 2B. 14, 15, and 16, pulling out one from the center, the left and right edges respectively from two places on the outer edge of the left edge thermal bonding part 2 </ b> A and two places on the outer edge of the right edge thermal bonding part 2 </ b> B In a position that proceeds in the direction toward the inner edge of the edge thermal bonding portion 2A, 2B and does not reach the inner edge of the left and right edge thermal bonding portions 2A, 2B Two specifications that converge to a point may be used. When removing the center one, in addition to the two specifications, variations of four specifications and six specifications and even numbers are possible, and the center one is not pulled out. In this case, in addition to the three specifications, there can be an odd number of variations of five specifications, seven specifications, and the number of the starting point side and the ending point side can be different. The left and right end edges converge to one point at a position that does not reach the inner edges of the thermal bonding portions 2A and 2B.

また、図４、図６において、第１―３上端側切目線３０Ｅ、３０Ｇ、第１―３下端側切目線３０Ｆ、３０Ｈ、第２―３中央直線状切目線３１Ｅにおける中央部分の約１ｃｍ又は２ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、図１１において、第１−２中央直線状切目線３０Ｉ、第２−２中央直線状切目線３１Ｊにおける中央部分の約１ｃｍ又は２ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約１ｃｍ又は２ｃｍ幅程度の箇所を加工深度の浅い部分３０Ｅ"、３０Ｇ"，３０Ｆ"、３０Ｈ"、３０Ｉ"、３１Ｅ"、３１Ｊ"とし、その加工深度の浅い部分３０Ｅ"、３０Ｇ"，３０Ｆ"、３０Ｈ"、３０Ｉ"、３１Ｅ"、３１Ｊ"の左右両脇と連接する加工深度の深い部分３０Ｅ'、３０Ｇ'、３０Ｆ'、３０Ｈ'、３０Ｉ'、３１Ｅ'、３１Ｊ'を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｅ'、３０Ｇ'、３０Ｆ'、３０Ｈ'、３０Ｉ'、３１Ｅ'、３１Ｊ'）、次に引裂き難い部分（３０Ｅ"、３０Ｇ"，３０Ｆ"、３０Ｈ"、３０Ｉ"、３１Ｅ"、３１Ｊ"）、次に引裂き易い部分（３０Ｅ'、３０Ｇ'、３０Ｆ'、３０Ｈ'、３０Ｉ'、３１Ｅ'、３１Ｊ'）と引裂き強度が変化するものを示したが、加工深度については、深い方を中間層のアルミに達する外層を全部貫通する深さとし、浅い方を中間層のアルミには達しない外層の一部までしか達しない深さとし、一例としては、深い加工深度が約８〜１２μｍとする一方で浅い加工深度を４〜７μｍ、１〜３μｍとすることが可能であるが、加工深度が深い部分に対して、加工深度の浅い部分は、引裂き強度も相対的に高くなる相関関係があるので、これらの数値範囲に限定されるものではない。なお、加工深度の深い部分も加工深度の浅い部分も、カット部のみが連続して配置されている連続状カット部分としている。   4 and 6, the first to third upper end cut lines 30E and 30G, the first to third lower end cut lines 30F and 30H, and about 1 cm of the central portion of the second and third central straight cut lines 31E or In order to make the tear strength relatively higher than that of the other portions (making it difficult to tear) a portion having a width of about 2 cm, in FIG. 11, the 1-2 central straight cut line 30I, the 2-2 central straight cut In order to increase the tear strength of the center portion of the center line 31J about 1 cm or 2 cm relatively higher than other portions (making it difficult to tear), the center portion of about 1 cm or 2 cm width is processed. The shallow depth portions 30E ", 30G", 30F ", 30H", 30I ", 31E", 31J "and the shallow depth portions 30E", 30G ", 30F", 30H ", 30I", 31E ", 31J "left and right By providing the deep processing portions 30E ′, 30G ′, 30F ′, 30H ′, 30I ′, 31E ′, and 31J ′ that are connected to the side, a portion that is easy to tear (30E ′ as tearing proceeds from the left to the right) , 30G ', 30F', 30H ', 30I', 31E ', 31J'), then the parts that are difficult to tear (30E ", 30G", 30F ", 30H", 30I ", 31E", 31J "), then The parts that are easy to tear (30E ', 30G', 30F ', 30H', 30I ', 31E', 31J ') and the ones whose tearing strength changes are shown. The depth that penetrates all the outer layers that reach it, and the shallower one that reaches only a part of the outer layer that does not reach the middle layer aluminum. For example, the deep processing depth is about 8-12 μm, while the shallow processing depth 4-7 μm, 1-3 μm However, since there is a correlation in which the tear strength is relatively high in the portion where the processing depth is shallow with respect to the portion where the processing depth is deep, it is not limited to these numerical ranges. In addition, both the deep processing depth portion and the shallow processing depth portion are continuous cut portions in which only the cut portions are continuously arranged.

また、図７、図８において、第１―３上端側切目線３０Ｅ、３０Ｇ、第１―３下端側切目線３０Ｆ、３０Ｈ、第２―３中央直線状切目線３１Ｅにおける中央部分の約１ｃｍ又は２ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、図１３、図１４、図１５、図１６において、第１−２中央直線状切目線３０Ｉ、第２−２中央直線状切目線３１Ｊにおける中央部分の約２ｃｍ幅程度の箇所をそれ以外の部分よりも相対的に引裂き強度を高くする（引裂き難くする）ため、その中央部分の約１ｃｍ又は２ｃｍ幅程度の箇所をカット部とアンカット部が交互に配置されて成る間欠状カット部分３０Ｅ"、３０Ｇ"，３０Ｆ"、３０Ｈ"、３０Ｉ"、３１Ｅ"、３１Ｊ"とし、間欠状カット部分３０Ｅ"、３０Ｇ"、３０Ｆ"、３０Ｈ"、３０Ｉ"、３１Ｅ"、３１Ｊ"の左右両脇と連接するカット部のみが連続して配置されている連続状カット部分３０Ｅ'、３０Ｇ'、３０Ｆ'、３０Ｈ'、３０Ｉ"、３１Ｅ'、３１Ｊ"を設けることで、左側から右側に引裂きが進行するにつれて、引裂き易い部分（３０Ｅ'、３０Ｇ'、３０Ｆ'、３０Ｈ'、３０Ｉ"、３１Ｅ'、３１Ｊ"）、次に引裂き難い部分（３０Ｅ"、３０Ｇ"、３０Ｆ"、３０Ｈ"、３０Ｉ"、３１Ｅ"、３１Ｊ"）、次に引裂き易い部分（３０Ｅ'、３０Ｇ'、３０Ｆ'、３０Ｈ'、３０Ｉ"、３１Ｅ'、３１Ｊ"）と引裂き強度が変化するものを示したが、間欠状カット部分のカット部とアンカット部の配置の一例としては、カット部を２．０ｍｍとしアンカット部を２．０ｍｍとする配置パターン、カット部を１．０ｍｍとしアンカット部を０．５ｍｍとする配置パターン、カット部を０．５ｍｍとしアンカット部を０．５ｍｍとする配置パターン等とすることが可能であるが、アンカット部が存在しない連続状カット部分に対して、アンカット部が存在する間欠状カット部分は、引裂き強度も相対的に高くなる相関関係があるので、これらの数値範囲に限定されるものではない。なお、間欠状カット部分も連続状カット部分も、加工深度については同じに設定する。   7 and 8, the first to third upper end cut lines 30E and 30G, the first and third lower end cut lines 30F and 30H, and about 1 cm of the central portion of the second and third central straight cut lines 31E or In order to make the tear strength relatively higher than that of the other portions (making it difficult to tear) the portion having a width of about 2 cm, in FIGS. 13, 14, 15, and 16, the 1-2 central straight cut line 30I In order to make the tear strength relatively higher than that of the other portions in the central portion of the 2-2 central straight cut line 31J relative to the other portions (to make it difficult to tear), about 1 cm of the central portion or Intermittent cut portions 30E ", 30G", 30F ", 30H", 30I ", 31E", 31J "in which cut portions and uncut portions are alternately arranged in a portion having a width of about 2 cm are provided. "30G" Continuous cut portions 30E ′, 30G ′, 30F ′, 30H ′, 30I ″ in which only cut portions connected to the left and right sides of 30F ″, 30H ″, 30I ″, 31E ″, 31J ″ are continuously arranged. , 31E ′, 31J ″ so that as tearing proceeds from the left side to the right side, the tearable part (30E ′, 30G ′, 30F ′, 30H ′, 30I ″, 31E ′, 31J ″), and then tearing Difficult part (30E ", 30G", 30F ", 30H", 30I ", 31E", 31J "), next easy to tear part (30E ', 30G', 30F ', 30H', 30I", 31E ', 31J) ") And the tear strength changed, but as an example of the arrangement of the cut part and the uncut part of the intermittent cut part, the arrangement pattern in which the cut part is 2.0 mm and the uncut part is 2.0 mm The cut part is 1.0 mm It is possible to make an arrangement pattern with a cut part of 0.5 mm, an arrangement pattern with a cut part of 0.5 mm and an uncut part of 0.5 mm, etc. On the other hand, the intermittent cut portion where the uncut portion exists is not limited to these numerical ranges because there is a correlation in which the tear strength is relatively high. The cut depth is set to the same processing depth.

次に、包装袋１を構成する積層体１０（前壁用積層体１０Ａと後壁用積層体１０Ｂと底壁用積層体１０Ｃの総称）について説明する。積層体１０の外層としては、包装袋１を構成する基本素材となることから、機械的、物理的、化学的等において優れた性質を有する合成樹脂製フィルムを用いることができ、たとえば、ポリエステル系、ポリアミド系、ポリプロピレン系等の樹脂を用いることができる。また、これらの樹脂を用いたフィルムとしては、二軸方向に延伸した延伸フィルムが好適である。この理由としては、通常、外層１１には印刷が施されることが多く、印刷適性が求められるからである。また、外層１１を構成するフィルムの厚さとしては、コストなどを勘案して決めればよいが、概ね８〜１２μｍ程度で良いが、自立性を高めるにはより厚く１２〜２５μｍ程度としても良い。   Next, the laminated body 10 (general name of the laminated body 10A for front walls, the laminated body 10B for rear walls, and the laminated body 10C for bottom walls) which comprises the packaging bag 1 is demonstrated. As the outer layer of the laminated body 10, since it becomes a basic material constituting the packaging bag 1, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. Polyamide-based and polypropylene-based resins can be used. Moreover, as a film using these resin, the stretched film extended | stretched to the biaxial direction is suitable. This is because the outer layer 11 is usually subjected to printing and printability is required. The thickness of the film constituting the outer layer 11 may be determined in consideration of cost and the like, but may be about 8 to 12 μm. However, the thickness may be thicker to about 12 to 25 μm in order to improve the self-supporting property.

また、積層体１０の中間層１２に用いるアルミニウム箔としては、焼鈍処理されたアルミニウム箔が適当であり、その厚みとしては６〜１５μｍ程度である。   Moreover, as an aluminum foil used for the intermediate | middle layer 12 of the laminated body 10, the annealed aluminum foil is suitable, and the thickness is about 6-15 micrometers.

また、積層体１０の内層１３としては、熱により溶融して相互に溶着し得る熱接着性樹脂から形成された層であればいのであって、包装袋１に要求される物性により適宜選択して用いればよいものであるが、たとえば、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、直鎖状（線状）低密度ポリエチレン、ポリプロピレン、エチレン−αオレフィン共重合体、エチレン−プロピレン共重合体、エチレン−酢酸ビニル共重合体、アイオノマー樹脂、エチレンとアクリル酸との酸コポリマー、エチレンとアクリル酸エステルとのエステルコポリマー等で形成することができる。また、内層１３を構成するフィルムの厚さとしては、求められる物性とコスト等を勘案して決めればよいものである。   The inner layer 13 of the laminate 10 may be any layer formed from a heat-adhesive resin that can be melted by heat and welded to each other. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, It can be formed with an ethylene-vinyl acetate copolymer, an ionomer resin, an acid copolymer of ethylene and acrylic acid, an ester copolymer of ethylene and acrylic acid ester, or the like. Further, the thickness of the film constituting the inner layer 13 may be determined in consideration of required physical properties and costs.

また、積層体１０は、中間層１２と内層１３の間に包装袋とした際に必要とされる物性、たとえば、機械的強靭性、耐屈曲性、耐突き刺し性、耐衝撃性、耐寒性、耐熱性、耐薬品性等の物性を付与するために、たとえば、ポリエステル、ポリアミド、ポリエチレン，ポリプロピレン，エチレン−プロピレン共重合体等のポリオレフィン等のフィルムや樹脂層からなる強度補強層を設けることができ、この強度補強層は上記フィルムや樹脂層を組み合わせてもよいものであり、その厚さとしては求められる物性やコスト等勘案して決めればよいものである。   The laminate 10 has physical properties required when forming a packaging bag between the intermediate layer 12 and the inner layer 13, such as mechanical toughness, bending resistance, puncture resistance, impact resistance, cold resistance, In order to provide physical properties such as heat resistance and chemical resistance, for example, a strength reinforcing layer made of a film such as polyester, polyamide, polyethylene, polypropylene, polyolefin such as ethylene-propylene copolymer, or a resin layer can be provided. The strength reinforcing layer may be a combination of the film and the resin layer, and the thickness may be determined in consideration of required physical properties and costs.

また、本発明の包装袋１を構成する積層体１０の各層の積層方法としては、サンドイッチラミネーション法、ドライラミネーション法等の周知の積層方法を適宜用いて積層すればよいものである。また、第１切目線３や第２切目線３’の形成は、ロータリーダイカッターを用いて物理的に形成してもよいが、好ましくはパルス発振型レーザー等を用いて積層体１０とした後に外層１１に形成する。これに用いるレーザーの種類としては、炭酸ガスレーザー、ＹＡＧレーザー、半導体レーザー、アルゴンイオンレーザー等が可能であり、特に限定するものではない。   Moreover, as a lamination | stacking method of each layer of the laminated body 10 which comprises the packaging bag 1 of this invention, what is necessary is just to laminate | stack suitably using well-known lamination methods, such as a sandwich lamination method and a dry lamination method. The first cut line 3 and the second cut line 3 ′ may be physically formed using a rotary die cutter, but preferably after the laminate 10 is formed using a pulsed laser or the like. Formed on the outer layer 11. As a kind of laser used for this, a carbon dioxide laser, a YAG laser, a semiconductor laser, an argon ion laser, etc. are possible, and it is not particularly limited.

なお、本発明者は、開封時の実際の引裂き線が、切目線から外れることが生じるメカニ
ズムを検討した結果、図１１、図１３、図１４、図１５、図１６に示す本発明のように、横一文字に引裂く切目線では、引裂き線が切目線から外れることがないのに対し、特許文献１に記載の包装袋や、図４、図６、図７、図８に示す本発明のように、横線と斜め線、横線と曲線を組み合わせた切目線では、引裂き線が外れる確率が増大することを確認している。したがって、図４、図６、図７、図８に示す本発明のように、手前側に引裂いても、奥側に引裂いても手前側の積層体が中央で上端側或いは下端側に膨れるような変則的な切目線に沿って引裂き線を形成することで、引裂き開口部の表裏の積層体の外郭が異なり段差が生じることにより手指で容易に摘んで開口することができるという効果は奏するものの、本来的に変則的な切目線を備えることによるデメリット、つまり、横一文字に引裂く切目線と比較して引裂き線が切目線から外れる可能性が高くなることは否めない。このような変則的な切目線が招来する本来的なデメリットは、使用者が通常の速度、例えば、成人男性が幅１０ｃｍの袋を１０秒程度開封するような場合には、ほとんど発生しないが、使用者が非常に高い速度、例えば、成人男性が幅１０ｃｍの袋を１秒程度で一気に開封するような場合には、発生することがあり得る。したがって、図４、図６、図７、図８に示す本発明のような変則的な切目線であっても引裂き線が切目線から外れる可能性を出来る限り低減して、良好な引裂き開口部を形成するための引裂き速度の許容範囲を拡げることが望まれており、当然に、その工夫・改良は、切目線の形状および包装袋を構成する表裏の積層体に形成する切目線の形状およびその組み合わせ以外の要素により達成する必要がある。 In addition, as a result of examining the mechanism by which the actual tear line at the time of opening deviates from the cut line, the present inventor, as shown in FIG. 11, FIG. 13, FIG. 14, FIG. In the cut line that tears into one horizontal character, the tear line does not deviate from the cut line, whereas the packaging bag described in Patent Document 1 and the present invention shown in FIG. 4, FIG. 6, FIG. 7, and FIG. Thus, it has been confirmed that the probability that the tear line is removed increases in the cut line that combines the horizontal line and the diagonal line, and the horizontal line and the curve. Therefore, as in the present invention shown in FIGS. 4, 6, 7 and 8, the laminate on the front side swells to the upper end side or the lower end side at the center even if it is torn to the near side or to the far side. Although the tear line is formed along the irregular cut line, the outer surface of the laminate on the front and back of the tear opening is different, and a step is produced, so that it can be easily picked and opened with fingers. It is undeniable that there is a demerit caused by providing an irregular cut line inherently, that is, the possibility that the tear line deviates from the cut line as compared with the cut line that tears into a single horizontal character. The original disadvantage that such an irregular cut line is incurred hardly occurs when the user opens a bag of 10 cm width for about 10 seconds at a normal speed, for example, an adult male, This can occur when the user opens a bag with a very high speed, for example, an adult male at a stretch of a 10 cm wide bag in about one second. Therefore, even if it is an irregular cut line like the present invention shown in FIG. 4, FIG. 6, FIG. 7, and FIG. 8, the possibility that the tear line deviates from the cut line is reduced as much as possible, and a good tear opening is obtained. It is hoped that the allowable range of tearing speed for forming the bag is expanded. Naturally, the contrivance / improvement is the shape of the score line and the shape of the score line formed on the front and back laminates constituting the packaging bag. It needs to be achieved by factors other than the combination.

そこで、本発明者は、開封時の実際の引裂き線が、切目線から外れることが生じるメカニズムを分析した結果、切目線が形成されていないアルミニウム箔からなる中間層より内側に配置される層（単層の場合、複数層の場合がある）の少なくとも一つの層が配向性を有する層であると、これが切目線と一致しない場合には、主に切目線が、たとえば、直線から斜め線、斜め線から直線、直線から曲線、曲線から直線に移行する箇所、あるいは、変曲点が存在する曲線の変曲点の箇所において、引裂き線が切目線から外れる確率を増大しており、アルミニウム箔からなる中間層より内層側に配置される層のいずれの層にも敢えて配向性を有さない積層体で構成された包装袋とすることで、外層の切目線に追従した良好な引裂き線（切目線に一致した引裂き線）を形成できる、すなわち、上記図４、図６、図７、図８に示す本発明における切目線の工夫に伴うデメリットを低減出来るとの知見を得ている。   Therefore, as a result of analyzing the mechanism by which the actual tear line at the time of opening is deviated from the score line, the present inventor has found a layer (inside the intermediate layer made of aluminum foil in which the score line is not formed) If at least one of the layers is a layer having orientation, when this does not coincide with the score line, the score line is mainly, for example, a straight line to an oblique line, There is an increased probability that the tear line will deviate from the score line at the transition point from the oblique line to the straight line, from the straight line to the curve, from the curve to the straight line, or at the inflection point of the curve where the inflection point exists. A good tear line that follows the score line of the outer layer by making a packaging bag composed of a laminate that does not have orientation in any of the layers arranged on the inner layer side of the intermediate layer consisting of Match cut line And it can tear line) formed, i.e., FIG. 4, 6, 7, has gained knowledge that can reduce the disadvantages associated with the contrivance score line in the present invention shown in FIG.

以上より、図４、図６、図７、図８に示す本発明の包装袋（第１実施形態〜第４実施形態）においては、包装袋を構成する積層体のアルミニウム箔からなる中間層より内層側に配置された層は全て未延伸フィルムおよび／ないし未延伸樹脂層から構成されることが好ましく、積層体の中間層より内層側に配置された層は全て配向性を有さないことにより、包装袋を左・右側端縁熱接着部２Ａ、２Ｂの一方の外縁（たとえば、左側の外縁）から外層の切目線（第１切目線３、第２切目線３’）に沿って引き裂くと、外層の切目線（第１切目線３、第２切目線３’）に一致した良好な引裂き開口部を形成できるより良好な追従性をより高度に達成することができ、もって、良好な引裂き開口部を形成するための引裂き速度の許容範囲を拡げることができる。   As mentioned above, in the packaging bag (1st Embodiment-4th Embodiment) of this invention shown in FIG.4, FIG.6, FIG.7, FIG.8 from the intermediate | middle layer which consists of aluminum foil of the laminated body which comprises a packaging bag. All the layers arranged on the inner layer side are preferably composed of an unstretched film and / or an unstretched resin layer, and all the layers disposed on the inner layer side from the intermediate layer of the laminate are not oriented. When the packaging bag is torn along one of the outer edges (for example, the outer edge on the left side) of the left and right edge thermal adhesive portions 2A and 2B along the outer layer cut line (first cut line 3 and second cut line 3 ′) Better followability that can form a good tear opening that coincides with the cut lines of the outer layer (first cut line 3, second cut line 3 ') can be achieved to a higher degree, and thus good tearing can be achieved. Increase the tolerable range of tear rates to create openings It can be.

以上より、図４、図６、図７、図８、図１１、図１３、図１４、図１５、図１６に示す本発明の包装袋（第１実施形態〜第９実施形態）においては、前壁シートの外層に形成する第１切目線と後壁シートの外層に形成する第２切目線それぞれにおいて、中央側の複数本の切目線の中央部分が、それ以外の部分と比較して相対的に引き裂き性が低いものとすることにより、具体的には、中央側の複数本の切目線の中央部分のみカット部とアンカット部が交互に配置された間欠状カット状態とし且つそれ以外の部分をカット部のみが連続した連続カット状態とすることにより、あるいは、中央側の複数本の切目線の中央部分のみ切目が断面方向において外層の途中までとするハーフカット状態とし且つそれ以外の部分を外層を貫通する貫通カット状態とすることにより、包装袋を左・右側端縁熱接着部２Ａ、２Ｂの一方の外縁（たとえば、左側の外縁）から外層の切目線（第１切目線３、第２切目線３’）に沿って引き裂くと、外層の切目線（第１切目線３、第２切目線３’）に一致した良好な引裂き開口部を形成できるより良好な追従性（良好な引き裂き開口性）を保持しつつ充填機での吸盤装置による真空吸着開口工程更にはチャッキング装置による挟持工程における隙間（内容物を充填する開口）形成にて切目線から破れることを防止できる。   From the above, in the packaging bag (first embodiment to ninth embodiment) of the present invention shown in FIGS. 4, 6, 7, 8, 11, 13, 13, 14, 15, and 16, In each of the first cut line formed in the outer layer of the front wall sheet and the second cut line formed in the outer layer of the rear wall sheet, the central part of the plurality of cut lines on the center side is relatively compared with the other parts. In particular, by making the tearing property low, specifically, it is in an intermittent cut state in which cut portions and uncut portions are alternately arranged only in the central portion of the plurality of score lines on the center side, and other than that By making the portion into a continuous cut state in which only the cut portion is continuous, or in a half cut state in which only the central portion of the plurality of cut lines on the central side is in the middle of the outer layer in the cross-sectional direction, and the other portions The outer layer penetrates through the cut By setting the state, the packaging bag is cut from one outer edge (for example, the left outer edge) of the left and right edge thermal bonding portions 2A, 2B to the outer layer cut line (first cut line 3, second cut line 3 '). If it is torn along, the better followability (good tear opening) that can form a good tear opening that coincides with the cut line (first cut line 3, second cut line 3 ') of the outer layer is maintained. However, it is possible to prevent tearing from the score line by forming a gap (opening for filling the contents) in the vacuum suction opening process by the suction cup device in the filling machine and also in the clamping process by the chucking device.

１ 包装袋
２ 端縁熱接着部
２Ａ 左側端縁熱接着部
２Ｂ 右側端縁熱接着部
２Ｃ 底部端縁熱接着部
２Ｄ 上部端縁熱接着部
３ 第１切目線
３’ 第２切目線
５ 切欠
１０Ａ 前壁用積層体（前壁シート）
１０Ｂ 後壁用積層体（後壁シート）
１０Ｃ 底壁用積層体（底壁シート）
１１ 外層
１２ 中間層
１３ 内層
２０ 合成樹脂製の咬合具
２１ 凸条の雄部材
２２ 凹条の雌部材
３０Ａ 第１−１起点側収斂状切目線
３０Ｂ 第１−１終点側収斂状切目線
３０Ｃ 第１−２起点側直線状切目線
３０Ｄ 第１−２終点側直線状切目線
３０Ｅ，３０Ｇ 第１−３上端側切目線
３０Ｆ，３０Ｈ 第１−３下端側切目線
３０Ｉ 第１−２中央直線状切目線
３１Ａ 第２―１起点側収斂状切目線
３１Ｂ 第２―１終点側収斂状切目線
３１Ｃ 第２−２起点側直線状切目線
３１Ｄ 第２−２終点側直線状切目線
３１Ｅ 第２−３中央側直線状切目線
３１Ｊ 第２−２中央直線状切目線
α 切目線形成領域
β 咬合具形成領域
γ ガセット領域
Ｎ１ Ｖ字状の切欠
Ｎ２ Ｕ字状の切欠 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Edge thermal bonding part 2A Left edge thermal bonding part 2B Right edge thermal bonding part 2C Bottom edge thermal bonding part 2D Upper edge thermal bonding part 3 1st cut line 3 '2nd cut line 5 Notch 10A laminate for front wall (front wall sheet)
10B Laminate for rear wall (rear wall sheet)
10C Laminate for bottom wall (bottom wall sheet)
DESCRIPTION OF SYMBOLS 11 Outer layer 12 Intermediate layer 13 Inner layer 20 Synthetic resin occlusal tool 21 Convex male member 22 Concave female member 30A 1-1 first converging cut line 30B 1-1 final converging cut line 30C No. 1-2 start point side straight cut line 30D 1-2 end point side straight cut line 30E, 30G 1-3 upper end side cut line 30F, 30H 1-3 lower end side cut line 30I 1-2 central straight line shape Cut line 31A 2-1 start point side convergent cut line 31B 2-1 end point side converged cut line 31C 2-2 start point side straight cut line 31D 2-2 end point side straight cut line 31E 2nd 3 Central straight cut line 31J 2-2 Central straight cut line α Cut line forming region β Articulating device forming region γ Gusset region N1 V-shaped cutout N2 U-shaped cutout

Claims (4)

外層とアルミニウムからなる中間層と熱接着性樹脂からなる内層とを少なくとも有する積層体からなる前壁シートと後壁シートの内層面が対向された状態で配置されており、
当該前壁シートと後壁シートの下端部に、熱接着性樹脂からなる内層を少なくとも有する積層体からなる底壁シートが、内層面が外面となるように中央で山折りされた状態で挿入されており、
前記前壁シートの内層面と前記後壁シートの内層面に対して、対向する山折りされた状態の前記底壁シートの外面が、当該底壁シートの周縁部にてヒートシールされることで形成された底部熱接着部を有し、
前記前壁シートの内層面に対向する前記後壁シートの内層面同士は、左右の側端縁がヒートシールされることで形成された左右の側端縁熱接着部を有する、包装袋であって、
前記前壁シートの外層に、左右方向に第１の切目線が形成されており、
前記後壁シートの外層に、左右方向に第２の切目線が形成されており、
前記第１切目線と前記第２切目線に沿って前記包装袋の上端側を左右方向に引裂き開口した際に、前記前壁シートの切断面の外郭と前記後壁シートの切断面の外郭とにより引裂き開口部が形成される構成であって、
前記第１切目線は、左右方向の中間部において、前記上端側に膨れる切目線と、下端側に膨れる切目線とを有しており、
前記第１切目線に沿った前記前壁シートの前記中間部のうちの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定され、前記第２切目線に沿った前記後壁シートの前記中間部のうちの中央部分の引裂強度がそれ以外の部分の引裂強度よりも相対的に高く設定されており、
前記第２切目線の前記中間部は、前記第１切目線の前記上端側に膨れる切目線と前記下端側に膨れる切目線と、の間と対応する位置を通過する、ことを特徴とする包装袋。
Subsurface of the rear wall sheet and the front wall sheet comprising a laminate having at least an inner layer consisting of the intermediate layer and the heat-adhesive resin comprising an outer layer and aluminum is disposed in a state of being opposed,
A bottom wall sheet made of a laminate having at least an inner layer made of a heat-adhesive resin is inserted into the lower end portions of the front wall sheet and the rear wall sheet in a state of being folded in the middle so that the inner layer surface becomes the outer surface. And
Against the inner surface and the inner surface of the rear wall sheet of the front wall sheet, that the outer surface of the bottom wall sheet mountain-folded state opposite is heat sealed at the periphery of the bottom wall sheet Having a bottom thermal bond formed ,
Inner surfaces of the rear wall sheet facing the inner surface of the front wall sheet, the left and right side edges has a side edge heat seal portion of the left and right that are formed by being heat sealed, a packaging bag And
A first score line is formed in the left-right direction on the outer layer of the front wall sheet,
A second cut line is formed in the left-right direction on the outer layer of the rear wall sheet,
When the upper end side of the packaging bag is torn open in the left-right direction along the first cut line and the second cut line, the outer surface of the cut surface of the front wall sheet and the outer surface of the cut surface of the rear wall sheet, The tear opening is formed by
The first cut line has a cut line that swells on the upper end side and a cut line that swells on the lower end side in an intermediate portion in the left-right direction,
The tear strength of the central portion of the intermediate portion of the front wall sheet along the first cut line is set to be relatively higher than the tear strength of the other portions, and the tear strength along the second cut line is set. The tear strength of the central portion of the intermediate portion of the rear wall sheet is set relatively higher than the tear strength of the other portions ,
The intermediate portion of the second cut line passes through a position corresponding to between the cut line bulging on the upper end side and the cut line bulging on the lower end side of the first cut line. bag.
前記包装袋の中央部分における前記第１切目線と前記第２切目線の深度が包装袋の中央部分以外の部分における前記第１切目線と前記第２切目線の深度よりも浅い、ことを特徴とする請求項１に記載の包装袋。 The depth of the first cut line and the second cut line in the central portion of the packaging bag is shallower than the depth of the first cut line and the second cut line in a portion other than the central portion of the packaging bag. The packaging bag according to claim 1. 前記包装袋の中央部分における前記第１切目線と前記第２切目線がカット部とアンカット部が交互に配置されており、前記包装袋の中央部分以外の部分における前記第１切目線と前記第２切目線がカット部のみが連続して配置されている、ことを特徴とする請求項１に記載の包装袋。 Cut portions and uncut portions are alternately arranged in the first cut line and the second cut line in the central portion of the packaging bag, and the first cut line and the portion in a portion other than the central portion of the packaging bag The packaging bag according to claim 1, wherein only the cut portion is continuously arranged in the second cut line. 前記第１切目線と第２切目線より下端側の包装袋の内面の対向する位置に、相互に咬合し合う凸条の雄部材と凹条の雌部材とからなる合成樹脂製の咬合具が設けられ、前記雄部材と前記雌部材とを咬合することで再封機能を備えることを特徴とする請求項１乃至請求項３のいずれかに記載の包装袋。 A synthetic resin occlusion device comprising a protruding male member and a concave female member that mesh with each other at opposing positions on the inner surface of the packaging bag at the lower end side of the first cut line and the second cut line. The packaging bag according to any one of claims 1 to 3, wherein the packaging bag is provided and has a resealing function by engaging the male member and the female member.
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