JP5915697B2

JP5915697B2 - Packaging bag

Info

Publication number: JP5915697B2
Application number: JP2014121072A
Authority: JP
Inventors: 落合　和典; 和典落合; 知依平山; 猪谷　敬; 敬猪谷
Original assignee: Dai Nippon Printing Co Ltd
Current assignee: Dai Nippon Printing Co Ltd
Priority date: 2014-06-12
Filing date: 2014-06-12
Publication date: 2016-05-11
Anticipated expiration: 2030-11-04
Also published as: JP2014198605A

Description

本発明は、容易に引き裂いて開封することができ、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外郭が異なることにより、手指で容易に開口するための段差が形成できる包装袋、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包装袋に関するものである。 The present invention can be easily torn and opened, and the tear opening when it is torn and opened is beautiful and the outline of the tear opening is different so that a step for easily opening with fingers can be formed. The present invention relates to a packaging bag, and further to a packaging bag having a resealing function by providing a synthetic resin bite 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. .

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、前記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（起点と終点の高さ方向［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、前記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（起点と終点の高さ方向［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、包装袋を平面視した状態で積層体の矩形平面上における前記第１切目線と前記第２切目線の形成位置を一部異なるものとすることで、前記第１切目線と前記第２切目線に沿って包装袋の上端側を幅方向（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、引裂き開口部を形成する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を異ならしめることで、引裂き開口部に段差を生じさせて内容物を取り出す際の開口を容易に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 a three-side seal type, four-side seal type, or standing type packaging bag, the outer edge of the front side laminate constituting the packaging bag starts from the outer edge of the left edge thermal bonding portion, and the right edge heat A continuous first cut line is formed with the outer edge of the bonded portion as the end point (the position of the starting point and the end point in the height direction [the direction parallel to the left and right side edge thermal bonding portions] is the same), and the packaging bag is configured. In the outer layer of the back side laminate, 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 (the height direction of the starting point and end point [parallel to the left and right side edge thermal bonding parts A second cut line that is continuous as the direction of the direction] is formed, and a part of the formation positions of the first cut line and the second cut line on the rectangular plane of the laminate in a state where the packaging bag is viewed in plan By making it different, the first cut line and the second cut line When the upper end side of the packaging bag is torn open in the width direction (the direction orthogonal to the left and right side edge thermal bonding portions), the outer side of the cut surface of the laminate on the front side that forms the tear opening and the back side lamination There has been proposed a packaging bag in which an opening when a content is taken out is made easier by making a difference in a tear opening by making the outline of a cut surface of the body different (see, for example, Patent Document 1).

さらに、同種の引裂き開口部に段差を生じさせて内容物を取り出す際の開口を容易に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, a packaging bag is also proposed in which a step is created in the same kind of tear opening to facilitate opening when the contents are taken out, and a packaging bag having a reseal function (see, for example, Patent Document 2). ).

ここで、特許文献１に記載された包装袋の第２実施形態、あるいは、特許文献２に記載された包装袋のように、第１切目線と第２切目線の一方（たとえば、裏側）を直線状の切目線とし他方（たとえば、表側）を下端側に膨れた変則的（非直線的）な切目線とすることで、直線状の切目線に沿った一方の積層体の切断面の直線的な外郭と、下端側に膨れた切目線に沿った他方の積層体の切断面の円弧状の外郭との組み合わせによる舌片形状の段差が、手指で容易に開口するための段差として最も望ましいとされている。 Here, as in the second embodiment of the packaging bag described in Patent Document 1 or the packaging bag described in Patent Document 2, one of the first cut line and the second cut line (for example, the back side) is used. A straight cut line of one of the laminates along the straight cut line, with a straight cut line and the other (for example, the front side) an irregular (non-linear) cut line swollen to the lower end side. A tongue-shaped step due to a combination of a general outline and an arc-shaped outline of the cut surface of the other laminate along the cut line bulging on the lower end side is most desirable as a step for easily opening with fingers It is said that.

しかし、包装袋を開封するにおいて、包装袋の変則的な切目線を備える面を手前に向けて、切目線より上端側の領域を摘んで手前に引裂くと、変則的な切目線を沿って下端側に膨れた円弧状の引裂き線が形成されるが、使用者の中には、袋を開封するにおいて、包装袋の変則的な切目線を備える面を手前に向けて、切目線より上端側の領域を摘んで奥側に引裂く場合があり、この場合には、引裂き線が変則的な切目線から外れる虞があり、当初予定した舌片形状の段差ができないことがある。 However, when opening the packaging bag, if the surface with the irregular cut line of the packaging bag is turned forward, the area on the upper end side from the cut line is picked and torn forward, along the irregular cut line An arc-shaped tear line that swells to the lower end side is formed, but some users open the bag with the irregular cut line side of the packaging bag facing forward and the upper end from the cut line. In some cases, the tearing line may be removed from the irregular cut line, and the initially planned tongue piece-shaped step may not be formed.

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、容易に引き裂いて開封することができ、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包装袋であって、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を工夫することにより、開封時の引裂き方向、具体的には手前側に引裂いても、また、奥側に引裂いても切目線から外れることなく引裂くことができる包装袋乃至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包装袋を提供することを課題とする。 The present invention can be easily torn and opened, and the tear opening when it is torn and opened is beautiful, and the outer surface of the laminate on the front and back sides of the tear opening is different, resulting in a difference in level. A packaging bag having at least an outer layer that can be opened in the middle, an intermediate layer made of aluminum foil, and an inner layer made of a heat-adhesive resin, and the cut formed on the front and back laminates constituting the packaging bag By devising the shape of the line of sight and the combination thereof, the packaging bag can be torn without tearing away from the cut line even if it tears in the tearing direction at the time of opening, specifically the front side or the back side Alternatively, a packaging bag having a resealing function can be provided by providing a synthetic resin occlusion device composed of a male member and a female member that mesh with each other at opposing positions on the inner surface of the packaging bag. A an object of the present invention.

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、外側から順に外層と第一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矩形状の積層体の前記内層同士を重ね合わせて、対向する一組の端縁の対向する位置に少なくとも対向する一組の端縁熱接着部を形成し、前記積層体の一方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第１開封手段を形成し、前記積層体の他方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第２開封手段を形成し、前記積層体の平面視状態における前記第１開封手段と前記第２開封手段の形成位置を異なるものとすることで、前記第１開封手段と前記第２開封手段に沿って包装袋の上端側を前記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積層体の一方の切断面の外郭と前記積層体の他方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って、前記第１開封手段は、起点側から、前記端縁熱接着部に直交する方向に進行して起点側の前記端縁熱接着部の内端縁より内側に達する起点側の一本の切目線と、終点側から、前記端縁熱接着部に直交する方向に進行して終点側の前記端縁熱接着部の内端縁よりも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複数本の切目線とを備えており、前記第１開封手段が備える起点側の一本の切目線と終点側の一本の切目線と複数本の切目線は積層体の外層に形成されており、前記第２開封手段は、起点側から終点側に至る切目線を備えており、前記第２開封手段が備える切目線は積層体の外層に形成されており、前記積層体の平面視状態における前記第１開封手段を構成する前記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ことを特徴とするものである。また、請求項２記載の本発明は、外側から順に外層と第一中間層及び第二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矩形状の積層体の前記内層同士を重ね合わせて、対向する一組の端縁の対向する位置に少なくとも対向する一組の端縁熱接着部を形成し、前記積層体の一方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第１開封手段を形成し、前記積層体の他方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第２開封手段を形成し、前記積層体の平面視状態における前記第１開封手段と前記第２開封手段の形成位置を異なるものとすることで、前記第１開封手段と前記第２開封手段に沿って包装袋の上端側を前記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積層体の一方の切断面の外郭と前記積層体の他方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って、前記第一中間層と前記内層との間に設けられている前記第二中間層は、包装袋とした際に必要とされる物性を付与するための層であって、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、或いは、当該フィルムや当該樹脂層の組み合わせからなり、前記第１開封手段は、起点側から、前記端縁熱接着部に直交する方向に進行して起点側の前記端縁熱接着部の内端縁より内側に達する起点側の一本の切目線と、終点側から、前記端縁熱接着部に直交する方向に進行して終点側の前記端縁熱接着部の内端縁よりも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複数本の切目線とを備えており、前記第１開封手段が備える起点側の一本の切目線と終点側の一本の切目線と複数本の切目線は積層体の外層に形成されており、前記第２開封手段は、起点側から終点側に至る切目線を備えており、前記第２開封手段が備える切目線は積層体の外層に形成されており、前記積層体の平面視状態における前記第１開封手段を構成する前記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 according to claim 1 is a rectangular laminate including at least an outer layer, a first intermediate layer, and an inner layer made of a heat-adhesive resin in order from the outside. The inner layers are overlapped to form a pair of edge thermal bonding portions facing at least opposite positions of the pair of facing edges, and one of the edge thermal bonding portions is formed on one of the laminates. A first opening means is formed continuously from the outer edge as a starting point and the other outer edge having the same position in the direction parallel to the starting edge and the edge thermal bonding portion as an end point, and the edge heat is formed on the other side of the laminate. A second unsealing means is formed starting from one outer edge of the bonding portion and starting from the other outer edge having the same position in the direction parallel to the starting edge and the edge thermal bonding portion, and is a plan view of the laminate It said second opening hands and said first opening means in the state With the forming position different, upon opening tear an upper side of the packaging bag along said second opening means and said first opening means in a direction perpendicular to the end edge thermal bonding unit, tear-open A packaging bag that creates a step in a tear opening by differentiating the outline of one cut surface of the laminate forming the portion and the outline of the other cut surface of the laminate, the first opening It means, from the starting point side, and a single score line origin side to reach inside the inner edge of said end edge thermal bonding of the progress to the origin side in the direction orthogonal to the end edge thermal bonding portion, the end point From the one end line on the end point that proceeds in the direction orthogonal to the edge thermal bonding portion and reaches the inner side of the inner edge of the edge thermal bonding portion on the end point side, and one on the starting side A plurality of cuts that branch from the end of the cut line and converge to the end of the single cut line on the end point side Includes bets, single score line and a plurality of score line of a single score line and the end point of the origin side provided in the first opening means is formed in the outer layer of the laminate, the second The opening means includes a score line extending from a starting point side to an end point side, and the score line provided in the second opening means is formed in an outer layer of the laminated body, and the first opening in the planar view state of the laminated body The formation positions of the plurality of cut lines constituting the means are formed by cut lines that swell toward the upper end side and cut lines that swell toward the lower end side. Further, in the present invention according to claim 2, the inner layers of a rectangular laminate having at least an outer layer, a first intermediate layer, a second intermediate layer, and an inner layer made of a thermoadhesive resin are stacked in order from the outside. Forming a pair of edge thermal bonding portions facing at least opposite positions of the pair of opposite edges, and starting from one outer edge of the edge thermal bonding portion on one side of the laminate. A first opening means is formed which continues from the other outer edge having the same position in the direction parallel to the starting point and the edge thermal bonding portion as an end point, and one outer edge of the edge thermal bonding portion is formed on the other side of the laminate. As a starting point, forming a second opening means that continues from the starting point and the other outer edge having the same position in the direction parallel to the edge thermal bonding portion as an end point, and the first opening in the plan view of the laminate And the second opening means are formed at different positions. The tear opening is formed when the upper end side of the packaging bag is opened along the first opening means and the second opening means in the direction perpendicular to the edge thermal bonding portion. A packaging bag that creates a step in a tear opening by differentiating the outline of one cut surface of the laminate and the outline of the other cut surface of the laminate, the first intermediate layer and the inner layer The second intermediate layer provided between the layers is a layer for imparting physical properties required when forming a packaging bag, such as polyester, polyamide, polyethylene, polypropylene, ethylene-propylene copolymer, etc. Made of a polyolefin film or a resin layer, or a combination of the film or the resin layer, and the first opening means proceeds from the origin side in a direction perpendicular to the edge thermal bonding portion. One cut line on the starting side that reaches the inner side from the inner edge of the edge thermal bonding portion on the point side, and the end side on the end side by proceeding in a direction perpendicular to the edge thermal bonding portion from the end point side One end line on the end point that reaches the inner side of the inner end edge of the edge thermal bonding part, and the end point on the one end line that branches off from the end point on the one end line on the start point side A plurality of score lines that converge, and the first opening line, the one end line, and the plurality of score lines formed on the outer layer of the laminate. The second unsealing means includes a score line extending from a starting point side to an end point side, and the score line included in the second unsealing means is formed in an outer layer of the laminate, and the plane of the laminate The formation positions of the plurality of cut lines constituting the first opening means in the viewing state are cut lines that bulge to the upper end side and bulge to the lower end side. It is characterized by comprising a score line.

また、請求項３記載の本発明は、外側から順に外層と第一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矩形状の積層体の前記内層同士を重ね合わせて、対向する一組の端縁の対向する位置に少なくとも対向する一組の端縁熱接着部を形成し、前記積層体の一方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第１開封手段を形成し、前記積層体の他方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第２開封手段を形成し、前記積層体の平面視状態における前記第１開封手段と前記第２開封手段の形成位置を異なるものとすることで、前記第１開封手段と前記第２開封手段に沿って包装袋の上端側を前記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積層体の一方の切断面の外郭と前記積層体の他方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って、前記第１開封手段は、起点側から、起点側の開封開始手段と、前記端縁熱接着部に直交する方向に進行して起点側の前記端縁熱接着部の内端縁より内側に達する起点側の一本の切目線と、終点側から、終点側の開封開始手段と、前記端縁熱接着部に直交する方向に進行して終点側の前記端縁熱接着部の内端縁よりも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複数本の切目線とを備えており、前記第１開封手段が備える起点側の一本の切目線と終点側の一本の切目線と複数本の切目線は積層体の外層に形成されており、前記第１開封手段が備える起点側の開封開始手段と終点側の開封開始手段はＩ字状、Ｖ字状、Ｕ字状、亀甲状等の切欠や傷痕群から形成されており、前記第２開封手段は、起点側から、起点側の開封開始手段と、切目線と、終点側の開封開始手段とを備えており、前記第２開封手段が備える切目線は積層体の外層に形成されており、前記第２開封手段が備える起点側の開封開始手段と終点側の開封開始手段はＩ字状、Ｖ字状、Ｕ字状、亀甲状等の切欠や傷痕群から形成されており、前記積層体の平面視状態における前記第１開封手段を構成する前記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ことを特徴とするものである。また、請求項４記載の本発明は、外側から順に外層と第一中間層及び第二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矩形状の積層体の前記内層同士を重ね合わせて、対向する一組の端縁の対向する位置に少なくとも対向する一組の端縁熱接着部を形成し、前記積層体の一方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第１開封手段を形成し、前記積層体の他方に、前記端縁熱接着部の一方の外縁を起点として、当該起点と前記端縁熱接着部に平行する方向の位置を同じくする他方の外縁を終点として連続する第２開封手段を形成し、前記積層体の平面視状態における前記第１開封手段と前記第２開封手段の形成位置を異なるものとすることで、前記第１開封手段と前記第２開封手段に沿って包装袋の上端側を前記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積層体の一方の切断面の外郭と前記積層体の他方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って、前記第一中間層と前記内層との間に設けられている前記第二中間層は、包装袋とした際に必要とされる物性を付与するための層であって、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、或いは、当該フィルムや当該樹脂層の組み合わせからなり、前記第１開封手段は、起点側から、起点側の開封開始手段と、前記端縁熱接着部に直交する方向に進行して起点側の前記端縁熱接着部の内端縁より内側に達する起点側の一本の切目線と、終点側から、終点側の開封開始手段と、前記端縁熱接着部に直交する方向に進行して終点側の前記端縁熱接着部の内端縁よりも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複数本の切目線とを備えており、前記第１開封手段が備える起点側の一本の切目線と終点側の一本の切目線と複数本の切目線は積層体の外層に形成されており、前記第１開封手段が備える起点側の開封開始手段と終点側の開封開始手段はＩ字状、Ｖ字状、Ｕ字状、亀甲状等の切欠や傷痕群から形成されており、前記第２開封手段は、起点側から、起点側の開封開始手段と、切目線と、終点側の開封開始手段とを備えており、前記第２開封手段が備える切目線は積層体の外層に形成されており、前記第２開封手段が備える起点側の開封開始手段と終点側の開封開始手段はＩ字状、Ｖ字状、Ｕ字状、亀甲状等の切欠や傷痕群から形成されており、前記積層体の平面視状態における前記第１開封手段を構成する前記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ことを特徴とするものである。
Further, the present invention according to claim 3 is a set in which the inner layers of a rectangular laminate having at least an outer layer, a first intermediate layer, and an inner layer made of a heat-adhesive resin are overlapped in order from the outer side to face each other. A pair of edge thermal bonding portions that are opposed to each other at positions opposite to each other are formed, and one outer edge of the edge thermal bonding portion is set as a starting point on one side of the laminate. The first opening means is formed continuously with the other outer edge having the same position in the direction parallel to the heat bonding portion as an end point, and the other edge of the edge heat bonding portion is used as the starting point on the other side of the laminate. The second opening means is formed continuously with the other outer edge having the same position in the direction parallel to the starting point and the edge thermal bonding portion as the end point, and the first opening means and the second opening state in the plan view of the laminate The position of opening means should be different. Then, one side of the laminate that forms a tear opening when the upper end side of the packaging bag is torn open in a direction perpendicular to the edge thermal bonding portion along the first opening means and the second opening means. A packaging bag that creates a step in the tear opening by making the outer surface of the cut surface different from the outer surface of the other cut surface of the laminate, wherein the first opening means is from the starting side to the starting side. Opening start means, a single cut line that travels in a direction perpendicular to the edge thermal bonding portion and reaches the inner side of the inner edge of the edge thermal bonding portion on the starting side, and from the end side An opening start means on the end point side, and a single cut line on the end point side that travels in a direction orthogonal to the edge thermal bonding portion and reaches the inner side of the inner edge of the edge thermal bonding portion on the end point side. Branch from the end of one cut line on the start point side and converge to the end of one cut line on the end point side A plurality of score lines, and the first opening line, the one end line, and the plurality of score lines are formed in the outer layer of the laminate. The opening start means on the starting side and the opening start means on the end side of the first opening means are formed from notches and scars such as I-shape, V-shape, U-shape, turtle shell shape, The second opening means includes an opening start means on the start side, a score line, and an opening start means on the end point side from the start side, and the cut line provided in the second opening means is on the outer layer of the laminate. The starting opening side opening means and the opening end opening start means provided in the second opening means are formed from notches and scars such as I-shape, V-shape, U-shape, turtle shell shape, etc. And the formation position of the plurality of cut lines constituting the first opening means in the plan view of the laminate is the top. It is characterized by comprising a cut line that swells toward the end side and a cut line that swells toward the lower end side . Moreover, this invention of Claim 4 has piled up the said inner layers of the rectangular laminated body which has an outer layer, a 1st intermediate layer, a 2nd intermediate layer, and the inner layer which consists of thermoadhesive resin in order from the outer side. Forming a pair of edge thermal bonding portions facing at least opposite positions of the pair of opposite edges, and starting from one outer edge of the edge thermal bonding portion on one side of the laminate. A first opening means is formed which continues from the other outer edge having the same position in the direction parallel to the starting point and the edge thermal bonding portion as an end point, and one outer edge of the edge thermal bonding portion is formed on the other side of the laminate. As a starting point, forming a second opening means that continues from the starting point and the other outer edge having the same position in the direction parallel to the edge thermal bonding portion as an end point, and the first opening in the plan view of the laminate And the second opening means are formed at different positions. The tear opening is formed when the upper end side of the packaging bag is opened along the first opening means and the second opening means in the direction perpendicular to the edge thermal bonding portion. A packaging bag that creates a step in a tear opening by differentiating the outline of one cut surface of the laminate and the outline of the other cut surface of the laminate, the first intermediate layer and the inner layer The second intermediate layer provided between the layers is a layer for imparting physical properties required when forming a packaging bag, such as polyester, polyamide, polyethylene, polypropylene, ethylene-propylene copolymer, etc. The first opening means comprises, from the starting side, the opening start means on the starting side, and the edge thermal bonding portion. One cut line on the starting point side that travels in an orthogonal direction and reaches the inner side of the inner edge of the edge thermal bonding portion on the starting point side, the opening start means on the end point side from the end point side, and the edge heat From one end line on the end point that travels in the direction perpendicular to the bonding part and reaches the inner side of the inner end edge of the end edge thermal bonding part on the end point side, and from the end of the one cut line on the start side A plurality of cut lines that branch and converge at the end of the one cut line on the end point side, one cut line on the start point side and one on the end point side included in the first opening means The cut line and the plurality of cut lines are formed in the outer layer of the laminate, and the opening start means on the starting side and the opening start means on the end side provided in the first opening means are I-shaped, V-shaped, U-shaped Formed from a notch or a group of scars such as a tortoiseshell shape, and the second opening means from the starting side to the opening start means on the starting side, and a score line And an opening start means on the end side, and a score line provided on the second opening means is formed in an outer layer of the laminate, and an opening start means on the start side and an end side provided on the second opening means The opening start means is formed of notches and scratches such as I-shape, V-shape, U-shape, and turtle shell shape, and the plurality of pieces constituting the first opening means in the planar view of the laminate The cut line is formed by a cut line that swells toward the upper end side and a cut line that swells toward the lower end side.

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と、包装袋を構成する２枚の積層体のうち、手前側の積層体は起点側の一本の切目線と下端側に膨れる切目線と終点側の一本の切目線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、包装袋を構成する２枚の積層体のうち、手前側の積層体は起点側の一本の切目線と上端側に膨れる切目線と終点側の一本の切目線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る。 According to this invention, when 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 torn toward the front, two sheets constituting the packaging bag are formed. Among the laminates, the laminate on the near side is formed with a tear line along one cut line starting from the start side, a cut line bulging to the lower end side, and one cut line on the end point side. When the upper end region is picked from the line of sight and torn to the back side, among the two laminated bodies constituting the packaging bag, the near side laminated body is a cut line that swells to the starting side and the upper line. Since a tear line is formed along one cut line on the end point side, the tear line can be torn without departing from the cut line.

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. 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要部平面図である。It is a principal part top view which shows schematically 1st Embodiment of the score line formed in the packaging bag concerning this invention. （ａ）は図３のＹ−Ｙ線断面を図解的に示す図，（ｂ）は図３のＺ−Ｚ線断面を図解的に示す図である。(A) is a figure which shows the YY sectional view schematically of FIG. 3, (b) is a figure which shows the ZZ sectional view schematically of FIG. 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要部平面図である。It is a principal part top view which shows schematically 2nd Embodiment of the score line formed in the packaging bag concerning this invention. 図３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.

上記の本発明について、図面等を用いて以下に詳述する。
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要部平面図、図４（ａ）は図３のＹ−Ｙ線断面を図解的に示す図，（ｂ）は図３のＺ−Ｚ線断面を図解的に示す図、図５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要部平面図、図６は図３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り、図中の１は包装袋、２は端縁熱接着部、２’は側端縁熱接着部、２”は上・下端縁熱接着部、３は第１切目線、３’は第２切目線、１０は積層体、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，３０Ｂは第１直線状切目線、３０Ｃ，３０Ｅは第１上端側切目線、３０Ｄ，３０Ｆは第１下端側切目線、３１Ａ，３１Ｂ，３１Ｃは第２直線状切目線、αは切目線形成領域、βが咬合具形成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.
1 is a plan view schematically showing the positional relationship between a cut line and a bite of a 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. The principal part top view which shows diagrammatically 1st Embodiment of the cut line formed in this packaging bag, FIG.4 (a) is a figure which shows the YY sectional view schematically of FIG. 3, (b) is FIG. FIG. 5 is a plan view schematically showing a second embodiment of the score line formed in the packaging bag according to the present invention, and FIG. 6 is the packaging shown in FIG. 1 is a packaging bag in which one side edge thermal bonding portion of the bag is left, 1 in the figure is a packaging bag, 2 is an edge thermal bonding portion, 2 ′ is a side edge thermal bonding portion, and 2 ″ is an upper side.・ Lower edge thermal bonding part, 3 is a first cut line, 3 ′ is a second cut line, 10 is a laminate, 11 is an outer layer, 12 is an intermediate layer, 13 is an inner layer, 20 is a synthetic resin bite, 21 Is the male member of the ridge, 22 is concave Female members 30A, 30B are first straight cut lines, 30C, 30E are first upper cut lines, 30D, 30F are first lower cut lines, 31A, 31B, 31C are second straight cut lines, α indicates a cut line forming region, and β indicates a bite forming region.

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であって、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とを積層した矩形状の積層体１０の前記内層１３同士を重ね合わせて四周端縁を熱接着して端縁熱接着部２で密封した四方シールタイプ包装袋である。なお、本明細書においては、前記端縁熱接着部２の中で、図１等において左右方向に位置する一組の前記端縁熱接着部２を側端縁熱接着部２’と呼称し、図１等において上下方向に位置する一組の前記端縁熱接着部２を上・下端縁熱接着部２”と呼称する。前記包装袋１は前記包装袋１を構成する矩形状の積層体１０の一方の外層と、他方の外層にそれぞれ、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（下端縁熱接着部２”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。 FIG. 1 is a plan view schematically showing the positional relationship between a score line and a bite of a packaging bag according to the present invention, and FIG. 2 is a diagram schematically showing a cross section taken along line XX of FIG. The outer layer 11, the intermediate layer 12 made of aluminum foil, and the inner layer 13 made of a heat-adhesive resin layer are laminated, the inner layers 13 of the rectangular laminate 10 are overlapped with each other, and the four peripheral edges are thermally bonded. It is a four-side seal type packaging bag sealed with a heat bonding part 2. In the present specification, among the edge thermal bonding portions 2, a set of the edge thermal bonding portions 2 positioned in the left-right direction in FIG. 1 and the like are referred to as side edge thermal bonding portions 2 ′. 1 and the like, the pair of edge thermal bonding portions 2 positioned in the vertical direction are referred to as upper and lower edge thermal bonding portions 2 ". The packaging bag 1 is a rectangular laminated layer constituting the packaging bag 1. A cut line forming region α in which a first cut line 3 and a second cut line 3 ′ are formed in one outer layer and the other outer layer of the body 10 so that the forming positions are different in a plan view of the packaging bag 1. And a synthetic resin occlusion tool 20 comprising a protruding male member 21 and a concave female member 22 which are engaged with each other on the lower end side (lower end edge thermal bonding portion 2 ″ side) of the cut line forming region α. And an articulator forming region β.

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３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要部平面図、図４（ａ）は図３のＹ−Ｙ線断面を図解的に示す図，（ｂ）は図３のＺ−Ｚ線断面を図解的に示す図であって、切目線は包装袋１を構成する積層体１０の一方の外層１１に、前記側端熱接着部２’の一方の外縁と他方の外縁とからそれぞれ前記側端縁熱接着部２’に直交する方向に前記包装袋１の前記側端縁熱接着部２’に直交する方向の位相（位置）（たとえば、上端縁熱接着部２”の外縁からの距離）を同じにして延びる第１直線状切目線３０Ａ、３０Ｂと、該第１直線状切目線３０Ａ、３０Ｂのそれぞれの終端を繋ぐ上端側に膨らむ第１上端側切目線３０Ｃと下端側に膨らむ第１下端側切目線３０Ｄとからなる第１切目線３と、包装袋１を構成する積層体１０の他方の外層１１に、前記側端縁熱接着部２’の一方の外縁と他方の外縁とからそれぞれ前記側端縁熱接着部２’に直交する方向に前記第１直線状切目線３０Ａ、３０Ｂと位相（位置）および長さを同じくして延びる第２直線状切目線３１Ａ、３１Ｂと、該第２直線状切目線３１Ａ、３１Ｂのそれぞれの終端を、一直線で繋ぐ第２直線状切目線３１Ｃとからなる第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. 3 is a plan view of an essential part schematically illustrating a first embodiment of a score line formed in the packaging bag according to the present invention, and FIG. 4A is a diagram schematically illustrating a cross section along line YY in FIG. (B) is a figure which shows the ZZ line | wire cross section of FIG. 3 schematically, Comprising: A cut line is one outer layer 11 of the laminated body 10 which comprises the packaging bag 1, and the said side end heat-bonding part 2 'is shown. A phase (position) in a direction orthogonal to the side edge thermal bonding portion 2 ′ of the packaging bag 1 in a direction orthogonal to the side edge thermal bonding portion 2 ′ from one outer edge and the other outer edge (for example, The first linear cut lines 30A and 30B extending at the same distance) from the outer edge of the upper edge thermal bonding part 2 ″ and the first linear cut lines 30A and 30B swell to the upper end side connecting the respective ends. A first cut line 3 including a first upper cut line 30C and a first lower cut line 30D that swells to the lower end side, and the packaging bag 1 are configured. In the other outer layer 11 of the laminated body 10, the first linear shape extends from one outer edge and the other outer edge of the side edge thermal bonding portion 2 ′ in a direction perpendicular to the side edge thermal bonding portion 2 ′. The second straight cut lines 31A and 31B extending in the same phase (position) and length as the cut lines 30A and 30B, and the second straight cut lines 31A and 31B are connected to each other by a straight line. The second cut line 3 'is composed of a straight cut line 31C.

上記のように構成した包装袋１は、前記第１切目線３が交差する前記側端縁熱接着部２’の外縁、たとえば、図３上の左側から上端側の領域を手指で摘んで第１切目線より手前に引裂くと、包装袋を構成する２枚の積層体のうち、手前側の積層体は第１直線状切目線３０Ａおよび第２直線状切目線３１Ａに沿って直線的に一体的に引き裂かれ、引裂き開封線が下端側に膨らむ第１下端側切目線３０Ｄおよび上端側に膨らむ第１上端側切目線３０Ｃの分岐点に至って、手前に引裂くことの結果として前記第１直線状切目線３０Ａから前記第１下端側切目線３０Ｄに沿って、また、前記第２直線状切目線３１は第２直線状切目線３１Ｃに沿って、それぞれ引裂かれ、それぞれの引裂き開封線が第１直線状切目線３０Ｂおよび第２直線状切目線３１Ｂに至って、前記第１下端側切目線３０Ｄは前記第１直線状切目線３０Ｂに沿って、また、前記第２直線状切目線３１Ｃは前記第２直線状切目線３１Ｂに沿って直線的に一体的に引き裂かれて開封される。図６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、前記第１下端側切目線３０Ｄと前記第２直線状切目線３１Ｃ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積層体１０の一方と他方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 is formed by gripping the outer edge of the side edge thermal bonding portion 2 ′ where the first cut line 3 intersects, for example, the region on the upper end side from the left side in FIG. When tearing to the near side from the first cut line, of the two laminated bodies constituting the packaging bag, the front laminate is linearly along the first straight cut line 30A and the second straight cut line 31A. As a result of tearing integrally and reaching the branch point of the first lower end side cut line 30D in which the tear opening line swells toward the lower end side and the first upper end side cut line 30C swelling toward the upper end side, the first tearing line opens. The second straight cut line 31 is torn along the first lower cut line 30D from the straight cut line 30A and the second straight cut line 31C. First straight cut line 30B and second straight cut line 31 Thus, the first lower cut line 30D is integrated along the first linear cut line 30B, and the second linear cut line 31C is integrated linearly along the second linear cut line 31B. Torn and opened. As shown in FIG. 6, the tear opening line is composed of a smooth curve and a straight line, and the opening can be made beautiful. In addition, the tear opening line formed by the first lower cut line 30D and the second straight cut line 31C can be easily picked and opened from one side of the laminate 10 in order to generate a step. it can.

また、図示あるいは詳細な説明は省略するが、図３において包装袋１の開封時に、図３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下端側切目線３０Ｄおよび上端側に膨らむ第１上端側切目線３０Ｃの分岐点に至って、奥側に引裂くことの結果として前記第１直線状切目線３０Ａから前記第１上端側切目線３０Ｃ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。 Further, although illustration or detailed explanation is omitted, when the packaging bag 1 is opened in FIG. 3, if the region on the upper end side from the left side in FIG. From the first straight cut line 30A as a result of tearing to the far side, reaching the branch point of the first lower cut line 30D bulging to the lower end side and the first upper cut line 30C bulging to the upper end side. Other than being torn along the first upper end side cut line 30C, it is torn and opened in the same manner as in the case of tearing to the near side.

また、図５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要部平面図であって、図３においては前記第１切目線の前記第１上端側切目線３０Ｃと第１下端側切目線３０Ｄ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上端側切目線３０Ｅと下端側に膨らむ第１下端側切目線３０Ｆとしたものであり、これ以外は図３と同じであり、説明は省略する。なお、第２実施形態の場合、前記第１切目線３の前記第１直線状切目線３０Ａあるいは３０Ｂに対して略コの字状の第１上端側切目線３０Ｅあるいは第１下端側切目線３０Ｆがなす角度θ（一箇所のみ記載した）は１６０〜１７５度が望ましい。 FIG. 5 is a plan view schematically showing a second embodiment of the cut line formed in the packaging bag according to the present invention. In FIG. 3, the first upper end side cut of the first cut line is shown. Although the eye line 30C and the first lower end side cut line 30D are shown in an arc shape, the first upper end side cut line 30E and the lower end side bulge to the upper end side of a substantially U-shape instead of the arc shape. The first lower end side cut line 30F is the same as FIG. 3, and the description thereof is omitted. In the case of the second embodiment, the first upper cut line 30E or the first lower cut line 30F is substantially U-shaped with respect to the first straight cut line 30A or 30B of the first cut line 3. Is preferably 160 to 175 degrees.

なお、図３においては、前記第１上端側切目線３０Ｃと第１下端側切目線３０Ｄを円弧状の形状とし、図５においては、前記第１上端側切目線３０Ｅと第１下端側切目線３０Ｆを略コの字状の形状としたものを例示したが、第１上端側切目線と第１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上端側切目線と第１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 FIG. 3, the first upper end cut line 30C and the first lower end cut line 30D have an arc shape, and in FIG. 5, the first upper end cut line 30E and the first lower end cut line. Although 30F was illustrated as a substantially U-shaped shape, the first upper end side cut line and the first lower end side cut line are not limited to this, and are substantially U-shaped or the like. Alternatively, the shapes of the first upper end side cut line and the first lower end side cut line may be different.

また、前記第１直線状切目線３０Ａと第１直線状切目線３０Ｂのそれぞれの終端を繋ぐ前記第１上端側切目線３０Ｃと第１下端側切目線３０Ｄ、あるいは、前記第１上端側切目線３０Ｅと第１下端側切目線３０Ｆ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、前記第１切目線３と前記第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と他方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。 Further, the first upper end side cut line 30C and the first lower end side cut line 30D that connect the respective ends of the first linear cut line 30A and the first linear cut line 30B, or the first upper end side cut line. 30E and the first lower end side cut line 30F are shown as a single cut line, but the number is not limited to one, and each may be composed of a plurality of lines, or the number of the upper end side and the lower end side may be different. It may be. Further, the interval between the score lines when a plurality of lines are provided is preferably 1 mm or less. It should be noted that one step of the laminated body constituting the packaging bag 1 and the other are designed with fingers easily so that the level difference in the tear opening of the first cut line 3 and the second cut line 3 ′ is 6 mm or more. This is preferable because it can be picked.

また、図３、図５において前記第２切目線３’を一本の直線状切目線で示したが、前記第２切目線３’を挟むように両側に１乃至複数本の直線状切目線を配置した複数本の直線状切目線であってもよいものであるし、また、前記第２切目線３’を構成する前記第２直線状切目線３１Ｃに替えて円弧状の上端側および／ないし下端側に膨らむ円弧状切目線であってもよいものであるが、いずれに場合においても、第２切目線３’は第１切目線３の上端側に膨らむ前記第１上端側切目線と下端側に膨らむ前記第１下端側切目線の間の領域に位置するように構成するのが好ましいものである。 3 and 5, the second cut line 3 ′ is shown as a single straight cut line, but one or more straight cut lines on both sides so as to sandwich the second cut line 3 ′. May be a plurality of linear cut lines, and an arcuate upper end side in place of the second straight cut lines 31C constituting the second cut lines 3 ′ and / or In any case, the second cut line 3 ′ may be the first upper cut line that bulges to the upper end side of the first cut line 3. It is preferable to configure so as to be located in a region between the first lower end side cut lines that bulge to the lower end side.

また、前記第１直線状切目線３０Ａ（または、前記第２直線状切目線３１Ａ）が前記側端縁熱接着部２’の外縁と交差する位置、あるいは、前記第１直線状切目線３０Ｂ（または、前記第２直線状切目線３１Ｂ）が前記側端縁熱接着部２’の外縁と交差する位置に、Ｉ字状、Ｖ字状、Ｕ字状、亀甲状等の切欠や傷痕群の開封開始手段を設けることで、視覚的にも機能的にも開封をより容易なものとしてもよいものである。 Further, the position where the first straight cut line 30A (or the second straight cut line 31A) intersects the outer edge of the side edge thermal bonding portion 2 ′, or the first straight cut line 30B ( Alternatively, at the position where the second linear cut line 31B) intersects with the outer edge of the side edge thermal bonding portion 2 ′, a cut or scar group such as I-shape, V-shape, U-shape, turtle shell shape, etc. By providing the opening start means, it is possible to make the opening easier both visually and functionally.

また、今までは四方シールタイプの包装袋で説明してきたが、要するに対向する一組の端縁の対向する位置に少なくとも端縁熱接着部が形成されてなる態様の包装袋、たとえば、３方シールタイプであっても、スタンディングタイプの包装袋であってもよいものである。また、本発明の趣旨を逸脱しない範疇のものは全て本発明に含まれるものであることは言うまでもないことである。 In addition, the four-side seal type packaging bag has been described so far, but in short, a packaging bag having a configuration in which at least one edge thermal bonding portion is formed at the opposed position of a pair of opposed edges, for example, three-way It may be a seal type or a standing type packaging bag. Further, it goes without saying that all the categories not departing from the gist of the present invention are included in the present invention.

次に、包装袋１を構成する積層体１０について説明する。前記積層体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、前記外層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、前記外層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１２〜２５μｍ程度である。 Next, the laminated body 10 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. For example, polyester Resins such as those based on polyamide, polyamide and polypropylene can be used. Moreover, as a film using these resin, the stretched film extended | stretched to the biaxial direction is suitable. This is because usually the outer layer 11 is often printed, 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 is generally about 12 to 25 μm.

また、前記積層体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 said laminated body 10, the annealed aluminum foil is suitable, and the thickness is about 6-15 micrometers.

また、前記積層体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、前記内層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 , Ethylene-vinyl acetate copolymer, ionomer resin, acid copolymer of ethylene and acrylic acid, ester copolymer of ethylene and acrylic acid ester, and 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、前記積層体１０は、前記中間層１２と前記内層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, for example, mechanical toughness, bending resistance, puncture resistance, impact resistance, In order to impart physical properties such as cold resistance, heat resistance, chemical resistance, etc., a strength reinforcing layer made of a film or resin layer of polyolefin such as polyester, polyamide, polyethylene, polypropylene, ethylene-propylene copolymer is 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を構成する前記積層体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、前記第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とした後に前記外層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 said 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 the laminate 10 is formed using a pulsed laser or the like. Later, the outer layer 11 is formed. 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.

１包装袋
２端縁熱接着部
２’ 側端縁熱接着部
２” 上・下端縁熱接着部
３第１切目線
３’ 第２切目線
１０積層体
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，３０Ｂ第１直線状切目線
３０Ｃ，３０Ｅ第１上端側切目線
３０Ｄ，３０Ｆ第１下端側切目線
３１Ａ，３１Ｂ，３１Ｃ第２直線状切目線
α 切目線形成領域
β 咬合具形成領域 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Edge thermal bonding part 2 'Side edge thermal bonding part 2 "Upper / lower edge thermal bonding part 3 1st cut line 3' 2nd cut line 10 Laminated body 11 Outer layer 12 Intermediate layer 13 Inner layer 20 Synthetic resin Occlusal tool 21 Convex male member 22 Concave female member 30A, 30B First straight cut line 30C, 30E First upper cut line 30D, 30F First lower cut line 31A, 31B, 31C Second Straight cut line α Cut line forming region β Articulating device forming region

Claims

A packaging bag composed of a rectangular laminate having at least an outer layer, a first intermediate layer, and an inner layer made of a heat-adhesive resin in order from the outside, and the inner layer of the laminate being arranged inside Because
The packaging bag includes a first surface on the near side and a second surface on the back side, which are configured by the laminate,
The left edge thermal bonding portion and the right edge thermal bonding are formed such that the first surface and the second surface are respectively formed at positions where at least a pair of the left edge and the right edge are opposed to each other. It is in a joined state at the part,
The first surface comprises first unsealing means and the second surface comprises second unsealing means;
Said first opening means, starting from the one of the outer edge of the left and right side edge heat seal portion, the left side, with the same position in the vertical direction parallel to the with the origin left and right edge heat-bonding portion and ending at the other outer edge of the right side edge heat seal part and,
Said second opening means, starting from the one of the outer edge of the left and right side edge heat seal portion, the left side, with the same position in the vertical direction parallel to the with the origin left and right edge heat-bonding portion and ending at the other outer edge of the right side edge heat seal part and,
The position of the first opening means and said second opening means in the plan view state of the first surface by a different, the upper side of the packaging bag along said second opening means and said first opening means When the left side and the right side edge are thermally opened in the right -and- left direction perpendicular to the edge thermal bonding portion, the outline of the cut surface of the first surface and the outline of the cut surface of the second surface that form the tear opening are different. It is a packaging bag that creates a step in the tear opening by tightening,
The first opening means includes
From the starting point side, and a single score line origin side proceeds in the lateral direction to reach inside the inner edge of said end edge thermal bonding portion of the starting point side,
From the end point, and a single score line of the end point is reached inside the proceeds in the lateral direction inner edge of said end edge thermal bonding portion of the end point,
A plurality of cut lines that branch from the end of one cut line on the start side and converge at the end of the single cut line on the end point;
With
Single score line and a plurality of score line of a single score line and the end point of the origin side included in the first opening means is formed in the outer layer of the first surface,
Said second opening means is provided with a score line extending to the end point from the starting point side,
The score line provided in the second opening means is formed in the outer layer of the second surface ,
The formation positions of the plurality of cut lines constituting the first opening means in the plan view state of the first surface are formed by cut lines that swell toward the upper end side and cut lines that swell toward the lower end side. Packaging bag.

It is composed of a rectangular laminate having at least an outer layer, a first intermediate layer, a second intermediate layer, and an inner layer made of a heat-adhesive resin in order from the outside, and the inner layer of the laminate is arranged to form the inside thereof A packaging bag,
The packaging bag includes a first surface on the near side and a second surface on the back side, which are configured by the laminate,
The left edge thermal bonding portion and the right edge thermal bonding are formed such that the first surface and the second surface are respectively formed at positions where at least a pair of the left edge and the right edge are opposed to each other. It is in a joined state at the part,
The first surface comprises first unsealing means and the second surface comprises second unsealing means;
The first unsealing means starts from one outer edge of the left and right edge thermal bonding portions, and has the same vertical position parallel to the left and right edge thermal bonding portions. And the other outer edge of the right edge thermal bonding part as the end point,
The second unsealing means starts from one outer edge of the left and right edge thermal bonding portions, and has the same vertical position parallel to the left and right edge thermal bonding portions. And the other outer edge of the right edge thermal bonding part as the end point,
By making the positions of the first opening means and the second opening means different in the plan view of the first surface, the upper end side of the packaging bag is moved along the first opening means and the second opening means. When the left side and the right side edge are thermally opened in the right-and-left direction perpendicular to the edge thermal bonding portion, the outline of the cut surface of the first surface and the outline of the cut surface of the second surface that form the tear opening are different. It is a packaging bag that creates a step in the tear opening by tightening,
The second intermediate layer provided between the first intermediate layer and the inner layer is a layer for imparting physical properties required when forming a packaging bag, and includes polyester, polyamide, polyethylene, It consists of a film or a resin layer of polyolefin such as polypropylene or ethylene-propylene copolymer, or a combination of the film or the resin layer,
The first opening means includes
From the starting point side, a single cut line that proceeds in the left-right direction and reaches the inside from the inner edge of the edge thermal bonding portion on the starting point side,
From the end point side, a single score line on the end point side that proceeds in the left-right direction and reaches the inner side of the inner edge of the end edge thermal bonding portion on the end point side,
A plurality of cut lines that branch from the end of one cut line on the starting point side and converge at the end of the single cut line on the end point side,
The first opening side provided with the first opening means, the one end line and one end line and the plurality of cut lines are formed in the outer layer of the first surface,
The second unsealing means includes a score line from the starting point side to the ending point side,
The score line provided in the second opening means is formed in the outer layer of the second surface,
The formation positions of the plurality of cut lines constituting the first opening means in the plan view state of the first surface are formed by cut lines that swell toward the upper end side and cut lines that swell toward the lower end side. Packaging bag.

A packaging bag composed of a rectangular laminate having at least an outer layer, a first intermediate layer, and an inner layer made of a heat-adhesive resin in order from the outside, and the inner layer of the laminate being arranged inside Because
The packaging bag includes a first surface on the near side and a second surface on the back side, which are configured by the laminate,
The left edge thermal bonding portion and the right edge thermal bonding are formed such that the first surface and the second surface are respectively formed at positions where at least a pair of the left edge and the right edge are opposed to each other. It is in a joined state at the part,
The first surface comprises first unsealing means and the second surface comprises second unsealing means;
Said first opening means, starting from the one of the outer edge of the left and right side edge heat seal portion, the left side, with the same position in the vertical direction parallel to the with the origin left and right edge heat-bonding portion and ending at the other outer edge of the right side edge heat seal part and,
Said second opening means, starting from the one of the outer edge of the left and right side edge heat seal portion, the left side, with the same position in the vertical direction parallel to the with the origin left and right edge heat-bonding portion and ending at the other outer edge of the right side edge heat seal part and,
The position of the first opening means and said second opening means in the plan view state of the first surface by a different, the upper side of the packaging bag along said second opening means and said first opening means When the left side and the right side edge are thermally opened in the right -and- left direction perpendicular to the edge thermal bonding portion, the outline of the cut surface of the first surface and the outline of the cut surface of the second surface that form the tear opening are different. It is a packaging bag that creates a step in the tear opening by tightening,
The first opening means includes
From the starting side,
Opening start means on the origin side,
Proceeds in the lateral direction and a single score line origin side to reach inside the inner edge of said end edge thermal bonding portion of the starting point side,
From the end point side,
An opening start means on the end point side;
Proceeds in the lateral direction and a single score line of the end point is reached inside the inner edge of said end edge thermal bonding portion of the end point,
A plurality of cut lines that branch from the end of one cut line on the starting point side and converge at the end of the single cut line on the end point side,
Single score line and a plurality of score line of a single score line and the end point of the origin side included in the first opening means is formed in the outer layer of the first surface,
The starting side opening start means and the end side opening start means provided in the first opening means are notches or scars ,
The second opening means includes
From the origin side
Opening start means on the origin side,
Cut line and
And an opening start means on the end point side,
The score line provided in the second opening means is formed in the outer layer of the second surface ,
The start side opening start means and the end side opening start means provided in the second opening means are notches or scars ,
The formation positions of the plurality of cut lines constituting the first opening means in the plan view state of the first surface are formed by cut lines that swell toward the upper end side and cut lines that swell toward the lower end side. Packaging bag.

It is composed of a rectangular laminate having at least an outer layer, a first intermediate layer, a second intermediate layer, and an inner layer made of a heat-adhesive resin in order from the outside, and the inner layer of the laminate is arranged to form the inside thereof A packaging bag,
The packaging bag includes a first surface on the near side and a second surface on the back side, which are configured by the laminate,
The left edge thermal bonding portion and the right edge thermal bonding are formed such that the first surface and the second surface are respectively formed at positions where at least a pair of the left edge and the right edge are opposed to each other. It is in a joined state at the part,
The first surface comprises first unsealing means and the second surface comprises second unsealing means;
The first unsealing means starts from one outer edge of the left and right edge thermal bonding portions, and has the same vertical position parallel to the left and right edge thermal bonding portions. And the other outer edge of the right edge thermal bonding part as the end point,
The second unsealing means starts from one outer edge of the left and right edge thermal bonding portions, and has the same vertical position parallel to the left and right edge thermal bonding portions. And the other outer edge of the right edge thermal bonding part as the end point,
By making the positions of the first opening means and the second opening means different in the plan view of the first surface, the upper end side of the packaging bag is moved along the first opening means and the second opening means. When the left side and the right side edge are thermally opened in the right-and-left direction perpendicular to the edge thermal bonding portion, the outline of the cut surface of the first surface and the outline of the cut surface of the second surface that form the tear opening are different. It is a packaging bag that creates a step in the tear opening by tightening,
The second intermediate layer provided between the first intermediate layer and the inner layer is a layer for imparting physical properties required when forming a packaging bag, and includes polyester, polyamide, polyethylene, It consists of a film or a resin layer of polyolefin such as polypropylene or ethylene-propylene copolymer, or a combination of the film or the resin layer,
The first opening means includes
From the origin side
Opening start means on the origin side,
A starting line on the starting point side that reaches the inner side from the inner edge of the edge thermal bonding portion on the starting point side in the left-right direction, and
From the end point side
An opening start means on the end point side;
A single cut line on the end point side that proceeds in the left-right direction and reaches the inner side of the inner end edge of the end edge thermal bonding portion on the end point side, and
A plurality of cut lines that branch from the end of one cut line on the starting point side and converge at the end of the single cut line on the end point side,
The first opening side provided with the first opening means, the one end line and one end line and the plurality of cut lines are formed in the outer layer of the first surface,
The starting side opening start means and the end side opening start means provided in the first opening means are notches or scars,
The second opening means includes
From the origin side
Opening start means on the origin side,
Cut line and
And an opening start means on the end point side,
The score line provided in the second opening means is formed in the outer layer of the second surface,
The start side opening start means and the end side opening start means provided in the second opening means are notches or scars,
The formation positions of the plurality of cut lines constituting the first opening means in the plan view state of the first surface are formed by cut lines that swell toward the upper end side and cut lines that swell toward the lower end side. Packaging bag.