JP2014055000A

JP2014055000A - Packaging bag

Info

Publication number: JP2014055000A
Application number: JP2012199300A
Authority: JP
Inventors: Tokiko Tanaka; 淑希子田中
Original assignee: Toppan Printing Co Ltd
Current assignee: Toppan Inc
Priority date: 2012-09-11
Filing date: 2012-09-11
Publication date: 2014-03-27

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag which allows tearing apart linearly with a beautiful cut line in the circumferential direction, in opening by opening from a notch provided in a back bonding part and separating the upper part from the lower part of the packaging bag and has excellent filling suitability.SOLUTION: A packaging bag is produced by forming a back bonding part by superimposing both right and left end parts of a laminate having a heat sealing resin layer as the innermost layer, in a principal-rafter-like form, to obtain a cylindrical body, respectively sealing tightly the upper and lower openings of the cylindrical body and providing a notch as a trigger for opening at a predetermined location of the back bonding part and used by hat cutting of the part upper than the notch. An opening guide line starting from a part of the back bonding part lower than the notch, extending obliquely upward from the notch and then extending nearly horizontally, and the opening guide line is drawn as a continuous line in right and left central parts of the front face and the back face and, in other areas, as a discontinuous line with small opening guide lines drawn at intervals.

Description

本発明は、包装袋に関するものである。特に、背貼り部を設けたピロー型やガセット型の包装袋で、背貼り部から開封して、周方向に対して直線状に開封する包装袋に関する。 The present invention relates to a packaging bag. In particular, the present invention relates to a packaging bag that is a pillow-type or gusset-type packaging bag provided with a back pasting portion, and is opened from the back pasting portion and opened linearly with respect to the circumferential direction.

従来、例えば、ピロー包装袋において、背貼り部にノッチを設け、背貼り部から開封し、包装袋の上部と下部を切り離す動作をする際、直線状に切れないという問題があった。 2. Description of the Related Art Conventionally, for example, in a pillow packaging bag, there has been a problem that when a notch is provided in a back pasting part, an opening is made from the back pasting part, and an upper part and a lower part of the packaging bag are separated, the straight part cannot be cut.

そこで、背貼り部を設けたピロー型やガセット型の包装袋において、包装袋の背貼り部に２つのノッチを設け、背貼り部の一方の根本に、多数の微細な傷痕（粗面加工部）を設けた包装袋があった（例えば、特許文献１参照）。 Therefore, in a pillow-type or gusset-type packaging bag provided with a back pasting portion, two notches are provided in the back pasting portion of the packaging bag, and a number of fine scratches (roughened surface processing portion) ) Was provided (see, for example, Patent Document 1).

しかし、これらの方法では開封性は向上するものの、背貼り部分から開封し、包装袋の上部と下部を切り離す動作をする際、切り離した切り口は直線状とはいえなかった。 However, in these methods, although the unsealing property is improved, when the opening is performed from the back-attached portion and the upper part and the lower part of the packaging bag are separated, the cut end is not linear.

さらに、１層以上の樹脂フィルム層を有する基材シートと、該基材シートに積層されているポリオレフィン系樹脂による熱シール用樹脂層との包装用材によって形成されている密封袋において、直線状に開封される開封予定部分における少なくとも基材シート中の１層の樹脂フィルム層には、０．５μｍ〜前記包装用材の厚さの１／２の深さを有する直線状の裂傷が、前記開封予定部分の方向を指すようにして形成されている易開封性の密封袋が報告されている（例えば、特許文献２参照）。 Furthermore, in the sealing bag formed by the packaging material of the base material sheet having one or more resin film layers and the heat sealing resin layer made of polyolefin resin laminated on the base material sheet, At least one resin film layer in the base material sheet in the opening planned portion to be opened has a linear tear having a depth of 0.5 μm to ½ of the thickness of the packaging material. An easy-open sealing bag formed so as to point in the direction of the part has been reported (for example, see Patent Document 2).

しかしながらこの方法では最外層だけでなく熱シール用樹脂層にまで裂傷が及ぶ可能性も含んでおり、バリア性劣化や輸送や落下時の屈曲耐性がなく破袋しやすいなどの問題があった。 However, this method involves the possibility of tearing not only to the outermost layer but also to the heat sealing resin layer, and has problems such as barrier property deterioration, bending resistance during transportation and dropping, and easy bag breaking.

一方、直線状の裂傷を形成しない代わりに一軸延伸フィルムを積層させることで横方向に直線開封性を持たせ、開封口が美しく、他方向へ裂けることがない包装袋について報告されている（例えば特許文献３参照）。 On the other hand, it has been reported about a packaging bag which has a straight openability in the lateral direction by laminating a uniaxially stretched film instead of forming a linear tear, has a beautiful opening, and does not tear in the other direction (for example, (See Patent Document 3).

しかし、左右の開封線端部が必ずしも合うとは限らず、包装袋の上部と下部がつながったままになる恐れがあり、また、過剰に延伸したことにより生じる繊維状の物質が包装袋の開封時に発生し、内容物と一緒に口に入ってしまう危険性が避けられないなどの問題がある。
公知文献を以下に示す。 However, the left and right unsealed line ends do not always match, and the upper and lower parts of the packaging bag may remain connected, and the fibrous material produced by excessive stretching may cause the packaging bag to open. There is a problem that sometimes occurs and the risk of entering the mouth with the contents is unavoidable.
Known documents are shown below.

特許第３５７８４１９号公報Japanese Patent No. 3578419 実開平３−５３４４７号公報Japanese Utility Model Publication No. 3-53447 特開平１０−３５６９４号公報JP-A-10-35694

本発明は、背貼り部に設けたノッチから開封し、包装袋の上部と下部を切り離して開封する際、周方向に対して直線状に、かつ美麗な切り口で引裂くことができ、さらに充填適性に優れた開封誘導線を有する包装袋を提供することを課題とする。 The present invention can be opened from the notch provided in the back-pasted part, and when the upper and lower parts of the packaging bag are separated and opened, it can be torn in a straight line with respect to the circumferential direction with a beautiful cut, and further filled It is an object of the present invention to provide a packaging bag having an opening guide wire excellent in suitability.

本発明は係る課題に鑑みなされたものであり、請求項１の発明は、最内層にヒートシール性樹脂層を有する積層体の左右両端部を合掌状に重ね合わせてシールして背貼り部を形成して筒状とし、さらに筒状の上下の開口部をそれぞれシールして密封され、前記背貼り部の所定位置には開封きっかけとなるノッチが設けられ、ノッチから上方部分を帽子切りさせる包装袋であって、
ノッチより下方の前記背貼り部から開始し、ノッチよりも斜め上方に向かった後、略水平方向に延びる開封誘導線が設けられ、該開封誘導線が包装袋の正面の左右中央部分では連続線で設けられ、それ以外の部分では、小開封誘導線が間隔を置いて設けられた不連続線で設けられていて、該小開封誘導線の長さが０．５ｍｍ以上、２．０ｍｍ以下であり、該間隔が０．５ｍｍ以上、３．０ｍｍ以下であることを特徴とする包装袋である。 SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the invention of claim 1 is characterized in that the left and right end portions of a laminate having a heat-sealable resin layer as the innermost layer are overlapped and sealed to form a back-pasted portion. Formed into a cylindrical shape, and further sealed by sealing the upper and lower openings of the cylindrical shape, and a notch for opening is provided at a predetermined position of the back sticking portion, and the upper part is cut off from the notch A bag,
Starting from the back-pasted part below the notch, an opening guide line extending in a substantially horizontal direction is provided after being directed obliquely upward from the notch, and the opening guide line is a continuous line at the left and right center portion of the front surface of the packaging bag In other parts, small opening guide lines are provided with discontinuous lines provided at intervals, and the length of the small opening guide line is 0.5 mm or more and 2.0 mm or less. The packaging bag is characterized in that the distance is 0.5 mm or more and 3.0 mm or less.

本発明の請求項２の発明は、最内層にヒートシール性樹脂層を有する積層体の左右両端部を合掌状に重ね合わせてシールして背貼り部を形成して筒状とし、さらに筒状の上下の開口部をそれぞれシールして密封され、前記背貼り部の所定位置には開封きっかけとなるノッチが設けられ、ノッチから上方部分を帽子切りさせる包装袋であって、
ノッチより下方の前記背貼り部から開始し、ノッチよりも斜め上方に向かった後、略水平方向に延びる開封誘導線が設けられ、該開封誘導線が包装袋の背面の左右中央部分では連続線で設けられ、それ以外の部分では、小開封誘導線が間隔を置いて設けられた不連続線で設けられていて、該小開封誘導線の長さが０．５ｍｍ以上、３．０ｍｍ以下であり、該間隔が０．５ｍｍ以上、３．０ｍｍ以下であることを特徴とする包装袋である。 In the invention of claim 2 of the present invention, the left and right ends of the laminate having the heat-sealable resin layer as the innermost layer are overlapped and sealed to form a back-pasted portion to form a cylinder, and further to a cylinder The upper and lower openings are respectively sealed and sealed, a notch serving as an opening trigger is provided at a predetermined position of the back pasting part, and a packaging bag for cutting off the upper part from the notch,
Starting from the back-pasted part below the notch, an opening guide line extending in a substantially horizontal direction is provided after being directed obliquely above the notch, and the opening guide line is a continuous line at the left and right center part of the back of the packaging bag In other parts, small opening guide lines are provided with discontinuous lines provided at intervals, and the length of the small opening guide line is 0.5 mm or more and 3.0 mm or less. The packaging bag is characterized in that the distance is 0.5 mm or more and 3.0 mm or less.

本発明の請求項３の発明は、前記開封誘導線がハーフカット線で設けられ、該ハーフカット線の深さが前記積層体の最外層の厚みに対し５０％〜９０％であることを特徴とする請求項１または２に記載の包装袋である。 The invention of claim 3 of the present invention is characterized in that the opening guide line is provided as a half-cut line, and the depth of the half-cut line is 50% to 90% with respect to the thickness of the outermost layer of the laminate. The packaging bag according to claim 1 or 2.

本発明の請求項４の発明は、前記包装袋が、最外層からポリエチレンテレフタレート、アルミニウム箔、ヒートシール性樹脂層の積層構成からなることを特徴とする請求項１から３のいずれか１項に記載の包装袋である。 According to a fourth aspect of the present invention, in the packaging bag according to any one of the first to third aspects, the packaging bag has a laminated structure of polyethylene terephthalate, aluminum foil, and heat-sealable resin layer from the outermost layer. It is a packaging bag of description.

本発明の請求項５の発明は、前記開封誘導線がレーザー加工にて施されていることを特徴とする請求項１から４のいずれか１項に記載の包装袋である。 A fifth aspect of the present invention is the packaging bag according to any one of the first to fourth aspects, wherein the opening guide line is provided by laser processing.

本発明の包装袋は、背貼り部分に設けたノッチから開封し、包装袋の上部と下部を切り離して開封する際、周方向に対して直線状に、かつ美麗な切り口で引裂くことができ、さらに充填適性に優れている。 The packaging bag of the present invention can be opened from the notch provided in the back-pasted part, and can be torn in a straight line with respect to the circumferential direction with a beautiful cut when opening the upper and lower parts of the packaging bag. Furthermore, it is excellent in filling suitability.

（Ａ）本発明の包装袋の第１の実施形態を模式的に示した背面図である。（Ｂ）本発明の包装袋の第１の実施形態を模式的に示した正面図である。(A) It is the rear view which showed typically 1st Embodiment of the packaging bag of this invention. (B) It is the front view which showed typically 1st Embodiment of the packaging bag of this invention. 図１（Ｂ）の丸で囲んだＸの部分を取り出した説明図である。It is explanatory drawing which took out the part of X enclosed with the circle of FIG. 1 (B). （Ａ）本発明の包装袋の第２の実施形態を模式的に示した背面図である。（Ｂ）本発明の包装袋の第２の実施形態を模式的に示した正面図である。(A) It is the rear view which showed typically 2nd Embodiment of the packaging bag of this invention. (B) It is the front view which showed typically 2nd Embodiment of the packaging bag of this invention. 図３（Ｂ）の丸で囲んだＹの部分を取り出した説明図である。It is explanatory drawing which took out the part of Y enclosed with the circle of FIG. 3 (B). （Ａ）本発明の包装袋に用いる積層体の一例を模式的に示した断面図である。（Ｂ）本発明の包装袋に用いる積層体の他の例を模式的に示した断面図である。(A) It is sectional drawing which showed typically an example of the laminated body used for the packaging bag of this invention. (B) It is sectional drawing which showed typically the other example of the laminated body used for the packaging bag of this invention.

＜第１の実施形態＞
以下、本発明を実施するための第１の実施形態につき説明する。
図１は、本発明の包装袋の第１の実施形態を模式的に正面で示した説明図、図２は、本発明の包装袋の第１の実施形態の周辺部を模式的に断面で示した部分説明図である。 <First Embodiment>
Hereinafter, a first embodiment for carrying out the present invention will be described.
FIG. 1 is an explanatory view schematically showing the first embodiment of the packaging bag of the present invention on the front, and FIG. 2 is a schematic cross-sectional view of the peripheral portion of the first embodiment of the packaging bag of the present invention. It is the partial explanatory view shown.

第１の実施形態の包装袋１００は、最内層にヒートシール性樹脂層を有する積層体の左右両端部を合掌状に重ね合わせてシールして背貼り部１を形成して筒状とし、さらに筒状の上下の開口部をそれぞれシールして天シール部２、地シール部３を設けて密封された、図１（Ａ）（Ｂ）のような、ピロー包装袋である。 The packaging bag 100 of 1st Embodiment forms the back-pasting part 1 into the cylinder shape by laminating | stacking the left and right both ends of the laminated body which has a heat-sealable resin layer in an innermost layer in the shape of a palm, and further, it is cylindrical. It is a pillow packaging bag like FIG. 1 (A) (B) sealed by providing the top seal part 2 and the ground seal part 3 by sealing the cylindrical upper and lower openings, respectively.

背貼り部１の所定位置には開封きっかけとなるノッチ４が設けられ、ノッチ４より下方の背貼り部１から開始し、ノッチ４よりも斜め上方に向かった後、略水平方向に延びる開封誘導線５が設けられている。 A notch 4 serving as an opening trigger is provided at a predetermined position of the back pasting portion 1, starting from the back pasting portion 1 below the notch 4, heading obliquely upward from the notch 4, and opening guide extending in a substantially horizontal direction Line 5 is provided.

開封誘導線５は、図１（Ｂ）のように、包装袋の正面の左右中央部分では連続線５１で設けられ、それ以外の部分では、小開封誘導線５２が間隔を置いて設けられた不連続線で設けられている。 As shown in FIG. 1 (B), the opening guide line 5 is provided with a continuous line 51 in the left and right center part of the front surface of the packaging bag, and small opening guide lines 52 are provided at intervals in other parts. It is provided with a discontinuous line.

連続線５１は、包装袋の正面に左右中心から左右５ｍｍの範囲に渡って設けられていることが好ましい。連続線５１を設けることにより、ノッチ４から開封し最終的に本体から切り離す際の最終部分の抵抗を小さくでき、その結果官能的な開封性を向上させることができる。 It is preferable that the continuous line 51 is provided in the front of the packaging bag over a range of 5 mm from the left and right center to the left and right. By providing the continuous line 51, the resistance of the final portion when opening from the notch 4 and finally separating from the main body can be reduced, and as a result, the sensory opening property can be improved.

小開封誘導線５２の長さＬは０．５ｍｍ以上、２．０ｍｍ以下で、間隔Ｄは、０．５ｍｍ以上、３．０ｍｍ以下であることが好ましい。これにより、輸送時や落下時の開封誘導線５を起因としたクラックの発生を防ぐことが可能となり、特に輸送時の振動により応力の掛かる背貼り部１の付け根部および筒状部でのクラック発生を改善することができる。 It is preferable that the length L of the small opening guide wire 52 is 0.5 mm or more and 2.0 mm or less, and the interval D is 0.5 mm or more and 3.0 mm or less. As a result, it is possible to prevent the occurrence of cracks due to the unsealing guide wire 5 at the time of transportation or dropping, and in particular, cracks at the base part and the cylindrical part of the back-attached part 1 that are stressed by vibration during transportation. Generation can be improved.

長さが０．５ｍｍより短いものは加工精度が低く、２．０ｍｍ以上の場合クラックの発生率が高くなってしまう。また間隔を０．５ｍｍより狭くすることは加工上困難であり、３．０ｍｍよりも間隔を広げてしまうと直線開封性が劣ってしまう。 If the length is shorter than 0.5 mm, the processing accuracy is low, and if it is 2.0 mm or more, the occurrence rate of cracks becomes high. In addition, it is difficult to make the interval narrower than 0.5 mm in terms of processing, and if the interval is widened more than 3.0 mm, the linear opening property is inferior.

開封誘導線５は、ハーフカット線で設けられていることが加工する上で好ましく、ハーフカット線の深さは、積層体の最外層の厚みに対し５０％〜９０％であることが好ましい。ハーフカット線の深さは、積層体の断面を光学顕微鏡にて観察、測定して調整する。 The opening guide line 5 is preferably provided as a half-cut line for processing, and the depth of the half-cut line is preferably 50% to 90% with respect to the thickness of the outermost layer of the laminate. The depth of the half-cut line is adjusted by observing and measuring the cross section of the laminate with an optical microscope.

ハーフカット線の深さが、積層体の最外層の厚みの９０％より深い場合、ヒートシール樹脂層が単体で存在する可能性が高くなり、その場合切り離す際にヒートシール樹脂層の伸びが大きく開封性が低下する。５０％よりも浅い場合は開封時の切り口が直線状になりにくく、包材の切り口の外観が悪化してしまう。 If the depth of the half-cut line is deeper than 90% of the thickness of the outermost layer of the laminate, there is a high possibility that the heat-seal resin layer exists alone, and in that case, the heat-seal resin layer has a large elongation when separated. Openability is reduced. When it is shallower than 50%, the cut at the time of opening is not easily linear, and the appearance of the cut of the packaging material is deteriorated.

開封誘導線５の深さを積層体の最外層の厚みに対し５０％〜９０％にすることによって、最外層とヒートシール樹脂層の接着部分がカットされずに残存し、ヒートシール性樹脂層が単層で存在して、切り離す際に単層のヒートシール性樹脂層が伸びて、切り離す際の妨げとなることがない。そのため、開封誘導線５が不連続である筒状部であっても官能的な開封性が非常に向上する。 By setting the depth of the unsealing guide wire 5 to 50% to 90% with respect to the thickness of the outermost layer of the laminate, the bonded portion between the outermost layer and the heat seal resin layer remains without being cut, and the heat seal resin layer Is present as a single layer, and the single heat-sealable resin layer does not stretch when it is cut off and does not interfere with the cutting. Therefore, even if the opening guide wire 5 is a discontinuous cylindrical portion, the sensory opening performance is greatly improved.

また開封きっかけとして、開封誘導線５が背貼り部１の根元と交差する部分の水平に伸ばした背貼り部１の端部にノッチ４が設けられている。ノッチ４は、本例ではＩ字ノッチで設けられているが、Ｖ字、Ｕ字形状などの任意の形状を使用することができる。 Further, as an opening trigger, a notch 4 is provided at an end portion of the back pasting portion 1 where the unsealing guide wire 5 extends horizontally at a portion where the root of the back pasting portion 1 intersects. In this example, the notch 4 is an I-shaped notch, but an arbitrary shape such as a V-shape or a U-shape can be used.

ノッチ４は、天シール部２の下端から袋の中央方向に対し、０．５ｍｍ〜３．０ｍｍの位置に設けられていることが好ましく、１．０ｍｍ〜２．０ｍｍの位置に設けられていることがより望ましい。 The notch 4 is preferably provided at a position of 0.5 mm to 3.0 mm with respect to the center direction of the bag from the lower end of the top seal portion 2, and is provided at a position of 1.0 mm to 2.0 mm. It is more desirable.

この位置にノッチ４を設けることにより、開封位置が分かりやすくまた開封性が良いだけでなく、開封時に内容物にぶつかって内容物が破損してしまうなどの不具合を解消することができる。 By providing the notch 4 at this position, not only is the opening position easy to understand and the unsealing property is good, but it is also possible to eliminate problems such as the contents being damaged by hitting the contents at the time of opening.

本発明の包装袋の第１の実施形態によれば、背貼り部１に設けたノッチ４から開封し、包装袋の上部と下部を切り離して開封する際、周方向に対して直線状に、かつ美麗な切り口で引裂くことができ、さらに充填適性に優れている。 According to the first embodiment of the packaging bag of the present invention, when opening from the notch 4 provided in the back pasting portion 1 and separating and opening the upper and lower portions of the packaging bag, linearly with respect to the circumferential direction, Moreover, it can be torn with a beautiful cut surface and has excellent filling suitability.

＜第２の実施形態＞
以下本発明を実施するための第２の実施形態につき説明する。
図３は、本発明の包装袋の第２の実施形態を模式的に平面で示した説明図である。 <Second Embodiment>
Hereinafter, a second embodiment for carrying out the present invention will be described.
FIG. 3 is an explanatory view schematically showing a second embodiment of the packaging bag of the present invention on a plane.

第２の実施形態の包装袋２００は、最内層にヒートシール性樹脂層を有する積層体の左右両端部を合掌状に重ね合わせてシールして背貼り部１を形成して筒状とし、さらに筒状の上下の開口部をそれぞれシールして天シール部２、地シール部３を設けて密封された、図３（Ａ）（Ｂ）のような、ピロー包装袋である。 The packaging bag 200 according to the second embodiment is formed into a tubular shape by forming a back-pasted portion 1 by sealing the left and right ends of a laminate having a heat-sealable resin layer as the innermost layer in a palm-like shape, and sealing them. It is a pillow packaging bag like FIG. 3 (A) (B) which sealed the cylindrical upper and lower opening parts, and provided the top seal part 2 and the ground seal part 3 and sealed.

開封誘導線５は、図３（Ａ）のように、包装袋の背面の左右中央部分では連続線５３で設けられ、それ以外の部分では、図４のように、小開封誘導線５４が間隔を置いて設けられた不連続線で設けられている。 As shown in FIG. 3A, the opening guide line 5 is provided with a continuous line 53 at the left and right center part of the back surface of the packaging bag, and at other parts, the small opening guide line 54 is spaced as shown in FIG. It is provided with a discontinuous line provided.

連続線５３は、包装袋の背面に背貼り部１を含む左右中心から左右５ｍｍの範囲に渡って設けられていることが好ましい。このように、開封誘導線５が設けられているので、ノッチ４から引き裂いていったときに、斜め方向の開封誘導線５に引き裂きが確実に誘導され、更に引き裂きが略水平方向に延びる開封誘導線５に確実に誘導される。 It is preferable that the continuous line 53 is provided over the range of 5 mm from the left-right center including the back pasting part 1 on the back surface of the packaging bag. Thus, since the opening guide line 5 is provided, when tearing from the notch 4, tearing is surely guided to the oblique opening guide line 5, and the tear is further extended in a substantially horizontal direction. It is reliably guided to the line 5.

小開封誘導線５４の長さｌは０．５ｍｍ以上、３．０ｍｍ以下で、間隔ｄは、０．５ｍｍ以上、３．０ｍｍ以下であることが好ましい。これにより、輸送時や落下時の誘導線を起因としたクラックの発生を防ぐことが可能となる。 The length l of the small opening guide wire 54 is preferably 0.5 mm or more and 3.0 mm or less, and the distance d is preferably 0.5 mm or more and 3.0 mm or less. As a result, it is possible to prevent the occurrence of cracks due to the guide wire during transportation or dropping.

長さが０．５ｍｍより短いものは加工精度が低く、３．５ｍｍ以上の場合クラックの発生率が高くなってしまう。また間隔を０．５ｍｍより狭くすることは加工上困難であり、３．０ｍｍよりも間隔を広げてしまうと直線開封性が劣ってしまう。 When the length is shorter than 0.5 mm, the processing accuracy is low, and when it is 3.5 mm or more, the occurrence rate of cracks is high. In addition, it is difficult to make the interval narrower than 0.5 mm in terms of processing, and if the interval is widened more than 3.0 mm, the linear opening property is inferior.

ハーフカット線の深さが、積層体の最外層の厚みの９０％より深い場合、ヒートシール樹脂層が単体で存在する可能性が高くなり、その場合切り離す際にヒートシール樹脂層の伸びが大きく開封性が低下する。５０％よりも浅い場合は開封時の切り口が直線状になり
にくく、包材の切り口の外観が悪化してしまう。 If the depth of the half-cut line is deeper than 90% of the thickness of the outermost layer of the laminate, there is a high possibility that the heat-seal resin layer exists alone, and in that case, the heat-seal resin layer has a large elongation when separated. Openability is reduced. When it is shallower than 50%, the cut at the time of opening is not easily linear, and the appearance of the cut of the packaging material is deteriorated.

本発明の包装袋の第２の実施形態によれば、背貼り部１に設けたノッチ４から開封し、包装袋の上部と下部を切り離して開封する際、周方向に対して直線状に、かつ美麗な切り口で引裂くことができ、さらに充填適性に優れる。 According to the second embodiment of the packaging bag of the present invention, when opening from the notch 4 provided in the back pasting part 1 and separating the upper and lower parts of the packaging bag and opening them, linearly with respect to the circumferential direction, Moreover, it can be torn with a beautiful cut surface and has excellent filling ability.

図５（Ａ）は、本発明の包装袋に用いる積層体の一例を模式的に示した断面図、（Ｂ）は、本発明の包装袋に用いる積層体の他の例を模式的に示した断面図である。 FIG. 5A is a cross-sectional view schematically showing an example of a laminate used in the packaging bag of the present invention, and FIG. 5B schematically shows another example of the laminate used in the packaging bag of the present invention. FIG.

包装袋１００や包装袋２００などの本発明の包装袋に用いる一例の積層体１０は、図５（Ａ）のように、最外層１１と最内層１２のヒートシール性樹脂層からなっている。また、図５（Ｂ）に示す、本発明の包装袋に用いる他の例の積層体２０のように、最外層１１と最内層１２の間に中間層１３を設けてもよい。 The laminated body 10 of an example used for the packaging bag of this invention, such as the packaging bag 100 and the packaging bag 200, consists of the heat-sealable resin layer of the outermost layer 11 and the innermost layer 12, as shown in FIG. Moreover, you may provide the intermediate | middle layer 13 between the outermost layer 11 and the innermost layer 12 like the laminated body 20 of the other example used for the packaging bag of this invention shown in FIG.5 (B).

本発明の包装袋に用いる最外層１１として使用するフィルムとしては、包装袋を構成する基本素材となることから、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、ポリカーボネート系、ポリアセタール系等の合成樹脂製フィルムを用いることができる。 Since the film used as the outermost layer 11 used in the packaging bag of the present invention is a basic material constituting the packaging bag, it is made of, for example, a synthetic resin such as polyester, polyamide, polypropylene, polycarbonate, or polyacetal. A film can be used.

また、最外層１１として使用する合成樹脂製フィルムは、前記合成樹脂製フィルムの内層側に一般的には印刷が施されることが多いために、最外層１１として使用する合成樹脂製フィルムは印刷適性が求められ、２軸方向に延伸した延伸フィルムが好ましい。合成樹脂製フィルムの厚みとしては基本素材としての強度、剛性などについて必要最低限に保持され得る厚さであればよく、１２〜２５μｍ程度が適当である。 Moreover, since the synthetic resin film used as the outermost layer 11 is generally printed on the inner layer side of the synthetic resin film, the synthetic resin film used as the outermost layer 11 is printed. Suitability is required, and a stretched film stretched in the biaxial direction is preferable. The thickness of the synthetic resin film may be any thickness as long as it can be kept to the minimum necessary for strength, rigidity, etc. as a basic material, and about 12 to 25 μm is appropriate.

また、合成樹脂製フィルムとしてアルミニウムや酸化珪素、酸化アルミニウム、酸化インジウム、酸化錫、酸化ジルコニウム等の無機物の蒸着層が形成された合成樹脂製フィルムを使用した場合、包材にバリア性を付与することも可能となる。さらに、カット性を向上させるために、セロファンや手切れ性の良いポリエステルフィルム等を使用しても良い。 In addition, when a synthetic resin film having an inorganic vapor deposition layer formed of aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide or the like is used as a synthetic resin film, a barrier property is imparted to the packaging material. It is also possible. Furthermore, cellophane, a polyester film with good hand cutting properties, or the like may be used in order to improve the cut performance.

最内層１２として使用するヒートシール性を有する樹脂としては、例えば、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−酢酸ビニル共重合体、アイオノマー樹脂、エチレン−アクリル酸共重合体、エチレン−アクリル酸メチル共重合体、エチレン−メタクリル酸共重合体、エチレン−プロピレン共重合体等の熱によって溶融し相互に融着し得るものが挙げられる。 Examples of the resin having heat sealability used as the innermost layer 12 include low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, Examples of the ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, and ethylene-propylene copolymer that can be melted by heat and fused together. .

これらは単体または２種以上使用しても良く、樹脂およびこれらをフィルム化したシートを使用しても良い。厚みとしては１５〜１００μｍが望ましく、３０〜５０μｍがより好ましい。 These may be used alone or in combination of two or more, and a resin and a sheet obtained by forming them into a film may be used. As thickness, 15-100 micrometers is desirable and 30-50 micrometers is more preferable.

最外層１１と最内層１２の間に設ける中間層１３には、例えば、アルミニウム、鉄、銅、錫等の金属箔、あるいは、ポリエチレンテレフタレート、ポリアミド、ポリエチレン、ポリプロピレン等のポリオレフィン、ポリ塩化ビニル、ポリカーボネート、ポリビニルアルコール、エチレンープロピレン共重合体、エチレン−酢酸ビニル共重合体ケン化物等のフィルムを使用することが出来る。 The intermediate layer 13 provided between the outermost layer 11 and the innermost layer 12 may be, for example, a metal foil such as aluminum, iron, copper, or tin, or a polyolefin such as polyethylene terephthalate, polyamide, polyethylene, or polypropylene, polyvinyl chloride, or polycarbonate. Films of polyvinyl alcohol, ethylene-propylene copolymer, saponified ethylene-vinyl acetate copolymer, and the like can be used.

あるいは、これらのフィルムにアルミニウムや酸化珪素、酸化アルミニウム、酸化インジウム、酸化錫、酸化ジルコニウム等の無機物の蒸着を施したフィルムあるいはポリ塩化ビニリデンを塗布したフィルムを使用することができ、これらは単体または２種以上組み合わせて使用しても良い。 Alternatively, a film obtained by depositing an inorganic substance such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide, or a film coated with polyvinylidene chloride on these films can be used. Two or more kinds may be used in combination.

これらのフィルムを中間層１３に設けることにより、ガスバリア性、水蒸気バリア性、機械的強度、耐屈曲性、耐突き刺し性、耐衝撃性、耐磨耗性、耐寒性、耐熱性、耐薬品性等を向上させることが可能となる。 By providing these films on the intermediate layer 13, gas barrier properties, water vapor barrier properties, mechanical strength, bending resistance, puncture resistance, impact resistance, wear resistance, cold resistance, heat resistance, chemical resistance, etc. Can be improved.

各層のフィルムなどの接着方法としては、例えば、ウエットラミネーション方法、ドライラミネーション方法、ノンソルベントドライラミネーション方法、ホットメルトラミネーション方法、エクストルージョンラミネーション方法、及び該エクストルージョンラミネーション方法を利用したサンドイッチラミネーション方法などの公知の方法を使用することができる。 Examples of the adhesion method of the film of each layer include, for example, a wet lamination method, a dry lamination method, a non-solvent dry lamination method, a hot melt lamination method, an extrusion lamination method, and a sandwich lamination method using the extrusion lamination method. Known methods can be used.

開封誘導線５をハーフカット線で設ける加工には、レーザー照射を用いることが出来る。レーザーとしては、例えばレーザー加工に使用され、連続またはパルス発振形式を有する炭酸ガスレーザー、ＹＡＧレーザー、エキシマレーザーなどが挙げられるが、食品等、内容物の耐バリア性が要求される場合は炭酸ガスレーザーの使用がより好ましい。 Laser irradiation can be used for the process of providing the unsealing guide line 5 with a half-cut line. Examples of lasers include carbon dioxide lasers, YAG lasers, and excimer lasers that are used for laser processing and have a continuous or pulsed oscillation format. The use of a laser is more preferred.

開封誘導線５をハーフカット線で設ける加工は、広幅で貼り合わせたウェブ状の積層体を、製袋用にスリットするときに、スリッターにレーザー照射機を搭載して行うことが望ましい。スリット時に開封誘導線５を設ける加工を行うことによって、工程を増やすことなく、連続で早く加工することが出来る。 The process of providing the unsealing guide wire 5 with a half-cut line is desirably performed by mounting a laser irradiation machine on a slitter when slitting a wide laminated web-like laminate for bag making. By performing the process of providing the opening guide wire 5 at the time of slitting, it is possible to process continuously and quickly without increasing the number of processes.

以下に、本発明の具体的実施例について説明する。
まず、第１の実施形態に係る本発明の具体的実施例について説明する。 Specific examples of the present invention will be described below.
First, specific examples of the present invention according to the first embodiment will be described.

＜実施例１＞
最外層１１となる厚さが１２μｍで７２０ｍｍ幅の二軸延伸ポリエチレンテレフタレートフィルムと、中間層１３の厚さが７μｍで７２０ｍｍ幅のアルミニウム箔と、最内層の厚さが３０μｍで７２０ｍｍ幅の密度０．９４ｇ／ｃｍ^３の直鎖状低密度ポリエチレンフィルムをドライラミネーション法により貼り合わせ、ウェブ状の積層体を得た。 <Example 1>
A biaxially stretched polyethylene terephthalate film having a thickness of 12 μm and a width of 720 mm, an outer layer 11 having an aluminum layer thickness of 7 μm and a thickness of 720 mm, and an innermost layer having a thickness of 30 μm and a density of 720 mm. A linear low-density polyethylene film of .94 g / cm ³ was bonded by a dry lamination method to obtain a web-like laminate.

続いて、スリッターに搭載した炭酸ガスレーザーを用いてポリエチレンテレフタレートフィルム側から深さが最外層１１の厚みの５０％となる開封誘導線５を、図１の形状になるように設けた後、製袋用の１００ｍｍ幅にスリット加工を施した。不連続線で設けられた開封誘導線５の小開封誘導線５２の長さＬを２．０ｍｍ、間隔Ｄを０．５ｍｍとなるように開封誘導線５を設けた。 Subsequently, the opening guide wire 5 having a depth of 50% of the thickness of the outermost layer 11 from the polyethylene terephthalate film side using the carbon dioxide laser mounted on the slitter is provided so as to have the shape of FIG. Slit processing was applied to 100 mm width for bags. The opening guide line 5 is provided so that the length L of the small opening guide line 52 of the opening guide line 5 provided by the discontinuous line is 2.0 mm and the interval D is 0.5 mm.

更に、１００ｍｍ幅にスリット加工した積層体を用いて、背貼り部１の幅が１０ｍｍとなるようなにピロー包装袋を作製した。その際に、斜めに設けられた開封誘導線５が、背貼り部１の内側の端部に交差する点と、略水平な位置の背貼り部１の外側の端部に開封きっかけの為のノッチ４をIノッチで設けた。以上のようにして、実施例１の包装袋を作製した。 Furthermore, the pillow packaging bag was produced using the laminated body slit-processed to 100 mm width so that the width | variety of the back pasting part 1 might be 10 mm. At that time, the opening guide line 5 provided diagonally intersects the inner end portion of the back pasting portion 1 and the outer end portion of the back pasting portion 1 at a substantially horizontal position for opening trigger. The notch 4 was provided with an I notch. The packaging bag of Example 1 was produced as described above.

＜実施例２＞
不連続線で設けられた開封誘導線５の小開封誘導線５２の長さＬを０．５ｍｍ、間隔Ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例１と同様にして、実施例２の包装袋を作製した。 <Example 2>
Example 1 except that the opening guide line 5 is provided so that the length L of the small opening guide line 52 of the opening guide line 5 provided by the discontinuous line is 0.5 mm and the interval D is 3.0 mm. Similarly, the packaging bag of Example 2 was produced.

＜実施例３＞
不連続線で設けられた開封誘導線５の小開封誘導線５２の長さＬを２．０ｍｍ、間隔Ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例１と同様にして、実施例３の包装袋を作製した。 <Example 3>
Example 1 except that the opening guide line 5 is provided so that the length L of the small opening guide line 52 of the opening guide line 5 provided by the discontinuous line is 2.0 mm and the distance D is 3.0 mm. Similarly, the packaging bag of Example 3 was produced.

＜実施例４＞
開封誘導線５の深さを最外層１１の厚みの９０％となるようにし、不連続線で設けられた開封誘導線５の小開封誘導線５２の長さＬを２．０ｍｍ、間隔Ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例１と同様にして、実施例４の包装袋を作製した。 <Example 4>
The depth of the unsealing guide wire 5 is set to 90% of the thickness of the outermost layer 11, the length L of the small unsealing guide wire 52 of the unsealing guide wire 5 provided as a discontinuous line is 2.0 mm, and the distance D is A packaging bag of Example 4 was produced in the same manner as in Example 1 except that the opening guide wire 5 was provided so as to be 3.0 mm.

＜実施例５＞
開封誘導線５の深さを最外層１１の厚みの９０％となるようにし、不連続線で設けられた開封誘導線５の小開封誘導線５２の長さＬを０．５ｍｍ、間隔Ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例１と同様にして、実施例５の包装袋を作製した。 <Example 5>
The depth of the opening guide line 5 is set to 90% of the thickness of the outermost layer 11, the length L of the small opening guide line 52 of the opening guide line 5 provided as a discontinuous line is set to 0.5 mm, and the interval D is set. A packaging bag of Example 5 was produced in the same manner as Example 1 except that the opening guide wire 5 was provided so as to be 3.0 mm.

以下に本発明の第１の実施形態の比較例について説明する。 A comparative example of the first embodiment of the present invention will be described below.

＜比較例１＞
不連続線で設けられた開封誘導線５の小開封誘導線５２の長さＬを３．０ｍｍ、間隔Ｄを１．０ｍｍとなるように開封誘導線５を設けた以外は、実施例１と同様にして、比較例１の包装袋を作製した。 <Comparative Example 1>
Example 1 except that the opening guide line 5 is provided so that the length L of the small opening guide line 52 of the opening guide line 5 provided by the discontinuous line is 3.0 mm and the interval D is 1.0 mm. Similarly, a packaging bag of Comparative Example 1 was produced.

＜比較例２＞
開封誘導線５の深さを最外層１１の厚みの９０％となるようにし、不連続線で設けられた開封誘導線５の小開封誘導線５２の長さＬを２．０ｍｍ、間隔Ｄを４．０ｍｍとなるように開封誘導線５を設けた以外は、実施例１と同様にして、比較例２の包装袋を作製した。 <Comparative example 2>
The depth of the unsealing guide wire 5 is set to 90% of the thickness of the outermost layer 11, the length L of the small unsealing guide wire 52 of the unsealing guide wire 5 provided as a discontinuous line is 2.0 mm, and the distance D is A packaging bag of Comparative Example 2 was produced in the same manner as in Example 1 except that the opening guide wire 5 was provided so as to be 4.0 mm.

＜比較例３＞
開封誘導線５の深さを最外層１１の厚みの２０％となるようにし、開封誘導線５を不連続線で設けることなく、開封誘導線５を全て連続線で設けた以外は、実施例１と同様にして、比較例３の包装袋を作製した。 <Comparative Example 3>
Example in which the depth of the opening guide line 5 is 20% of the thickness of the outermost layer 11 and the opening guide lines 5 are all provided as continuous lines without being provided as discontinuous lines. In the same manner as in Example 1, a packaging bag of Comparative Example 3 was produced.

＜比較例４＞
開封誘導線５の深さを最外層１１の厚みの９０％となるようにし、開封誘導線５を連続線で設けることなく、全て不連続線で設け、開封誘導線５の小開封誘導線５２の長さＬを、２．０ｍｍ、間隔Ｄを０．５ｍｍとなるようにした以外は、実施例１と同様にして、比較例４の包装袋を作製した。 <Comparative Example 4>
The opening guide line 5 is set to a depth of 90% of the thickness of the outermost layer 11. The opening guide line 5 is not provided as a continuous line but is provided as a discontinuous line, and the small opening guide line 52 of the opening guide line 5 is provided. A packaging bag of Comparative Example 4 was produced in the same manner as in Example 1 except that the length L was 2.0 mm and the interval D was 0.5 mm.

以下に、第２の実施形態に係る本発明の具体的実施例について説明する。 Specific examples of the present invention according to the second embodiment will be described below.

＜実施例６＞
実施例１と同様にして、最外層１１が二軸延伸ポリエチレンテレフタレートフィルム、中間層１３がアルミニウム箔、最内層が直鎖状低密度ポリエチレンフィルムからなる実施例１と同じウェブ状の積層体を得た。 <Example 6>
In the same manner as in Example 1, the same web-like laminate as in Example 1 is obtained in which the outermost layer 11 is a biaxially stretched polyethylene terephthalate film, the intermediate layer 13 is an aluminum foil, and the innermost layer is a linear low-density polyethylene film. It was.

続いて、スリッターに搭載した炭酸ガスレーザーを用いてポリエチレンテレフタレートフィルム側から深さが最外層１１の厚みの５０％となる開封誘導線５を、図３の形状になるように設けた後、製袋用の１００ｍｍ幅になるようにスリット加工を施した。不連続線で設けられた開封誘導線５の小開封誘導線５４の長さｌを３．５ｍｍ、間隔ｄを０．５ｍｍとなるように開封誘導線５を設けた。 Subsequently, after providing the opening guide wire 5 having a depth of 50% of the thickness of the outermost layer 11 from the polyethylene terephthalate film side using a carbon dioxide gas laser mounted on a slitter so as to have the shape of FIG. Slit processing was performed so as to have a width of 100 mm for bags. The opening guide line 5 was provided so that the length l of the small opening guide line 54 of the opening guide line 5 provided as a discontinuous line was 3.5 mm and the distance d was 0.5 mm.

更に、１００ｍｍ幅にスリット加工した積層体を用いて、背貼り部１の幅が１０ｍｍとなるようなにピロー包装袋を作製した。その際に、斜めに設けられた開封誘導線５が、背貼り部１の内側の端部に交差する点と、略水平な位置の背貼り部１の外側の端部に開封きっかけの為のノッチ４をIノッチで設けた。以上のようにして、実施例６の包装袋を作製した。 Furthermore, the pillow packaging bag was produced using the laminated body slit-processed to 100 mm width so that the width | variety of the back pasting part 1 might be 10 mm. At that time, the opening guide line 5 provided diagonally intersects the inner end portion of the back pasting portion 1 and the outer end portion of the back pasting portion 1 at a substantially horizontal position for opening trigger. The notch 4 was provided with an I notch. The packaging bag of Example 6 was produced as described above.

＜実施例７＞
不連続線で設けられた開封誘導線５の小開封誘導線５４の長さｌを３．５ｍｍ、間隔ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例６と同様にして、実施例７の包装袋を作製した。 <Example 7>
Example 6 except that the opening guide line 5 is provided so that the length l of the small opening guide line 54 of the opening guide line 5 provided by the discontinuous line is 3.5 mm and the interval d is 3.0 mm. Similarly, the packaging bag of Example 7 was produced.

＜実施例８＞
不連続線で設けられた開封誘導線５の小開封誘導線５４の長さｌを０．５ｍｍ、間隔ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例６と同様にして、実施例８の包装袋を作製した。 <Example 8>
Example 6 except that the opening guide line 5 is provided such that the length l of the small opening guide line 54 of the opening guide line 5 provided by the discontinuous line is 0.5 mm and the distance d is 3.0 mm. Similarly, the packaging bag of Example 8 was produced.

＜実施例９＞
開封誘導線５の深さを最外層１１の厚みの９０％となるようにし、不連続線で設けられた開封誘導線５の小開封誘導線５４の長さｌを３．５ｍｍ、間隔ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例６と同様にして、実施例９の包装袋を作製した。 <Example 9>
The depth of the unsealing guide wire 5 is set to 90% of the thickness of the outermost layer 11, the length l of the small unsealing guide wire 54 of the unsealing guide wire 5 provided as a discontinuous line is set to 3.5 mm, and the distance d is set. A packaging bag of Example 9 was produced in the same manner as Example 6 except that the opening guide wire 5 was provided so as to be 3.0 mm.

＜実施例１０＞
開封誘導線５の深さを最外層１１の厚みの９０％となるようにし、不連続線で設けられた開封誘導線５の小開封誘導線５４の長さｌを０．５ｍｍ、間隔ｄを３．０ｍｍとなるように開封誘導線５を設けた以外は、実施例６と同様にして、実施例１０の包装袋を作製した。 <Example 10>
The depth of the opening guide line 5 is set to 90% of the thickness of the outermost layer 11, and the length l of the small opening guide line 54 of the opening guide line 5 provided as a discontinuous line is set to 0.5 mm, and the interval d is set to A packaging bag of Example 10 was produced in the same manner as in Example 6 except that the opening guide wire 5 was provided so as to be 3.0 mm.

以下に本発明の第２の実施形態の比較例について説明する。尚、前述の比較例３、比較例４は第２の実施形態の比較例でもある。 A comparative example of the second embodiment of the present invention will be described below. In addition, the above-described comparative example 3 and comparative example 4 are also comparative examples of the second embodiment.

＜比較例５＞
不連続線で設けられた開封誘導線５の小開封誘導線５４の長さｌを４．０ｍｍ、間隔ｄを１．０ｍｍとなるように開封誘導線５を設けた以外は、実施例６と同様にして、比較例５の包装袋を作製した。 <Comparative Example 5>
Example 6 except that the opening guide line 5 is provided so that the length l of the small opening guide line 54 of the opening guide line 5 provided by the discontinuous line is 4.0 mm and the distance d is 1.0 mm. Similarly, a packaging bag of Comparative Example 5 was produced.

＜比較例６＞
開封誘導線５の深さを最外層１１の厚みの９０％となるようにし、不連続線で設けられた開封誘導線５の小開封誘導線５４の長さｌを３．０ｍｍ、間隔ｄを４．０ｍｍとなるように開封誘導線５を設けた以外は、実施例６と同様にして、比較例６の包装袋を作製した。 <Comparative Example 6>
The depth of the unsealing guide wire 5 is set to 90% of the thickness of the outermost layer 11, the length l of the small unsealing guide wire 54 of the unsealing guide wire 5 provided as a discontinuous line is set to 3.0 mm, and the distance d is set to A packaging bag of Comparative Example 6 was produced in the same manner as in Example 6 except that the opening guide wire 5 was provided so as to be 4.0 mm.

＜評価方法＞
実施例１〜１０、比較例１〜６の包装袋を、下記の方法で試験し、比較評価した。 <Evaluation method>
The packaging bags of Examples 1 to 10 and Comparative Examples 1 to 6 were tested and evaluated by the following method.

＜クラックの発生＞
実施例１〜１０、比較例１〜６の包装袋に内容物を充填して、そのときにクラックが発生するか否かを観察、評価した。その結果を表1にまとめた。 <Occurrence of cracks>
The packaging bags of Examples 1 to 10 and Comparative Examples 1 to 6 were filled with contents, and whether or not cracks occurred at that time was observed and evaluated. The results are summarized in Table 1.

＜開封性＞
内容物を充填した実施例１〜１０、比較例１〜６の包装袋を背貼り部１に設けたノッチ４から開封し、包装袋の上部と下部を切り離したときに、周方向に対して直線状に、かつ美麗な切り口で引裂くことができたか否かを、官能評価した。 <Openability>
When the packaging bags of Examples 1 to 10 and Comparative Examples 1 to 6 filled with the contents are opened from the notch 4 provided in the back pasting portion 1 and the upper and lower portions of the packaging bag are separated, the circumferential direction is A sensory evaluation was made as to whether or not it could be torn in a straight line with a beautiful cut.

容易にノッチ４から開封でき、開封誘導線５に従って、周方向に対して直線状に、かつ美麗な切り口で引き裂くことができた包装袋を◎とし、ノッチ４から開封でき、開封誘導線５に従って、周方向に対して直線状に、かつ美麗な切り口で引き裂くことができた包装袋を○とし、開封誘導線５から外れて引き裂かれたり、切り口がきれいでなかったりした包装袋を×として評価した。その結果を表1にまとめた。 A packaging bag that can be easily opened from the notch 4, is linear with respect to the circumferential direction according to the opening guide line 5, and can be torn with a beautiful cut surface, and can be opened from the notch 4 and can be opened according to the opening guide line 5. A packaging bag that is straight with respect to the circumferential direction and can be torn with a beautiful cut is rated as ◯, and a packaging bag that is torn apart from the opening guide line 5 or is not clean is rated as x. did. The results are summarized in Table 1.

＜比較結果＞
実施例１〜１０の本発明の包装袋は、内容物を充填したときにクラックが発生することなく、また、開封性もノッチ４から開封でき、開封誘導線５に従って、周方向に対して直線状に、かつ美麗な切り口で引き裂くことができいずれも良好であった。

<Comparison result>
The packaging bags of the present invention of Examples 1 to 10 can be opened from the notch 4 without cracks when filled with the contents, and can be opened from the notch 4. It was good to tear with a beautiful cut surface.

一方、比較例１、及び、３、５の包装袋は、開封性については良好であったが、内容物の充填時にクラックが発生してしまい、流通時に包装袋が破れてしまう恐れがあり、使用することに不安がある。 On the other hand, the packaging bags of Comparative Examples 1, 3, and 5 were good in terms of opening, but cracks occurred during filling of the contents, and the packaging bags might be torn during distribution. I'm worried about using it.

また、比較例２および比較例６の包装袋は、内容物の充填時にクラックが発生することはなかったが、開封性については、開封誘導線５から外れてしまったりして、きれいに開封することが出来なかった。 Moreover, although the packaging bag of the comparative example 2 and the comparative example 6 did not generate | occur | produce a crack at the time of the filling of the contents, about unsealability, it may remove | deviate from the unseal | opening guide wire 5, and unpack it neatly. I couldn't.

１００、２００・・・包装袋
１・・・背貼り部
２・・・天シール部
３・・・地シール部
４・・・ノッチ
５・・・開封誘導線
５１、５３・・・連続線
５２、５４・・・小開封誘導線
１０、２０・・・積層体
１１・・・最外層
１２・・・最内層
１３・・・中間層 DESCRIPTION OF SYMBOLS 100,200 ... Packaging bag 1 ... Back sticking part 2 ... Top seal part 3 ... Ground seal part 4 ... Notch 5 ... Opening guide lines 51, 53 ... Continuous line 52 54 ... Small opening guide wires 10, 20 ... Laminated body 11 ... Outermost layer 12 ... Innermost layer 13 ... Intermediate layer

Claims

The left and right ends of the laminate having the heat-sealable resin layer as the innermost layer are overlapped and sealed to form a back-pasted part to form a cylinder, and the cylindrical upper and lower openings are respectively sealed. A packaging bag that is sealed and provided with a notch that triggers opening at a predetermined position of the back pasting part, and that caps the upper part from the notch,
Starting from the back-pasted part below the notch, an opening guide line extending in a substantially horizontal direction is provided after being directed obliquely upward from the notch, and the opening guide line is a continuous line at the left and right center portion of the front surface of the packaging bag In other parts, small opening guide lines are provided with discontinuous lines provided at intervals, and the length of the small opening guide line is 0.5 mm or more and 2.0 mm or less. A packaging bag, wherein the distance is 0.5 mm or more and 3.0 mm or less.

The left and right ends of the laminate having the heat-sealable resin layer as the innermost layer are overlapped and sealed to form a back-pasted part to form a cylinder, and the cylindrical upper and lower openings are respectively sealed. A packaging bag that is sealed and provided with a notch that triggers opening at a predetermined position of the back pasting part, and that caps the upper part from the notch,
Starting from the back-pasted part below the notch, an opening guide line extending in a substantially horizontal direction is provided after being directed obliquely above the notch, and the opening guide line is a continuous line at the left and right center part of the back of the packaging bag In other parts, small opening guide lines are provided with discontinuous lines provided at intervals, and the length of the small opening guide line is 0.5 mm or more and 3.0 mm or less. A packaging bag, wherein the distance is 0.5 mm or more and 3.0 mm or less.

The said opening guide line is provided with a half cut line, The depth of this half cut line is 50%-90% with respect to the thickness of the outermost layer of the said laminated body, The Claim 1 or 2 characterized by the above-mentioned. Packaging bag.

The packaging bag according to any one of claims 1 to 3, wherein the packaging bag has a laminated structure of polyethylene terephthalate, aluminum foil, and heat-sealable resin layer from the outermost layer.

The packaging bag according to any one of claims 1 to 4, wherein the opening guide line is provided by laser processing.