JP6728593B2 - Freestanding packaging bag - Google Patents

Freestanding packaging bag Download PDF

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JP6728593B2
JP6728593B2 JP2015159084A JP2015159084A JP6728593B2 JP 6728593 B2 JP6728593 B2 JP 6728593B2 JP 2015159084 A JP2015159084 A JP 2015159084A JP 2015159084 A JP2015159084 A JP 2015159084A JP 6728593 B2 JP6728593 B2 JP 6728593B2
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bag
sheet
sealing
lower side
heat
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JP2017036074A (en
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中島　篤志
篤志 中島
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Toppan Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/06—Handles
    • B65D33/08—Hand holes

Description

本発明は、シーラント層を片面に有する積層構成の合成樹脂製シートを所要部分でヒートシールして上部隅に注出口栓を有する自立性が良好な自立包装袋に関するものである。 TECHNICAL FIELD The present invention relates to a self-supporting packaging bag having a self-supporting property in which a synthetic resin sheet having a laminated structure having a sealant layer on one surface is heat-sealed at a required portion and has a spout plug at an upper corner.

合成樹脂製シートの所要部分をヒートシールして収容物、例えば液体などを収容することができる包装袋が従来から各種提案されている。そして、このような包装袋の内、広がりのある袋底部を袋胴部の下部として備えて自立できる包装袋がある。 BACKGROUND ART Various packaging bags have been proposed in the related art in which a required portion of a synthetic resin sheet is heat-sealed to accommodate an item, such as a liquid. Among such packaging bags, there is a packaging bag that has a wide bag bottom portion as a lower portion of a bag body portion and can stand on its own.

例えば特許文献１に示されている包装袋ではピロータイプの製袋の応用からなるものであって、一枚の合成樹脂製シートを筒状にしてそのシートの縦方向の側辺同士を袋胴部での袋背面側で重ね合わせてヒートシールするとともに、袋胴部の下部でその袋胴部が扁平になるように重ね合わせることで相対するシートの下辺同士をヒートシールしている。そして、袋胴部での袋正面と袋背面とを離間することで下辺同士をヒートシールした部分が中心となるようにして袋正面側から袋底に回り込むシートと袋背面側から袋底に回り込むシートで広がりのある袋底を形成している。 For example, in the packaging bag shown in Patent Document 1, a pillow type bag is applied, and one synthetic resin sheet is formed into a tubular shape, and the side edges in the vertical direction of the sheet are formed into a bag cylinder. The back side of the bag is overlapped and heat-sealed, and the lower sides of the opposing sheets are heat-sealed by overlapping so that the bag body is flat at the lower part of the bag body. Then, the front side and the back side of the bag in the bag body are separated from each other so that the bottom heat-sealed portion is centered around the front side of the bag to the bottom side of the bag and the back side of the bag to the bottom side of the bag. The sheet forms a wide bag bottom.

さらに下辺同士をヒートシールした部分に沿った方向で対向する部分それぞれでは、袋正面側からと袋背面側からとから回り込んだ上記シートと袋側面での袋底側のシートとが重なり合って略三角形状に張り出る状態として、この三角形状となった部分の基端をヒートシールして余剰箇所を切除することで袋底を略矩形状にして自立できる状態としており、収容物を充填した後に袋胴部の上部を扁平にしてシートの上辺同士をヒートシールすることで封止しているものである。 Further, in each of the parts facing each other in the direction along the heat-sealed part of the lower sides, the above-mentioned sheet wrapped around from the bag front side and the bag back side and the bag bottom side sheet on the bag side surface are overlapped and substantially As a triangular shape, the base end of this triangular portion is heat-sealed and the surplus portion is cut off so that the bag bottom can be made into a substantially rectangular shape so that it can stand on its own. The upper part of the bag body is flattened, and the upper sides of the sheets are heat-sealed to be sealed.

また、特許文献２に示されている収納袋では一枚のシートを扁平なスリーブ状にして縦シールのヒートシールを行なうとともに、一部分を内側に折り入れてマチとし、下辺を線状にヒートシールしてから充填により袋底が開いて自立性が付与され、上辺をヒートシールして封止するものである。 Further, in the storage bag shown in Patent Document 2, one sheet is formed into a flat sleeve shape to perform vertical heat sealing, and a part is folded inward to form a gusset, and the lower side is linearly heat sealed. After that, the bottom of the bag is opened by the filling to provide self-supporting property, and the upper side is heat-sealed for sealing.

また、特許文献３では上記特許文献１と同じようにピロータイプの製袋の応用からなるものであって、袋底において側方に張り出る三角形状部分の基端をヒートシールして余剰部を切除して袋底を略矩形とした包装袋が示されているとともに、スリーブ状とした袋胴部での対向する袋側面となる箇所それぞれを内側に折り込んでマチを付けるガセット形態の包装袋が示されている。 Further, in Patent Document 3, as in the case of Patent Document 1 described above, the pillow type bag is applied, and the base end of the triangular portion protruding laterally at the bag bottom is heat-sealed to remove the excess portion. A wrapping bag in a gusset form is shown, in which the bag bottom that is cut out and has a substantially rectangular bottom is shown, and the parts that are the opposite bag sides in the sleeve-shaped bag body are folded inward to attach the gusset. It is shown.

また、特許文献４では袋側面となる部分にシートを折り込んでマチを構成するとともに、袋正面と袋側面との間及び袋背面と袋側面との間については縦方向にヒートシールを行なって自立性を向上させるようにしており、そして、片方の袋側面側のヒートシールされたサイドシールに取っ手を一体に形成した包装袋が示されている。 In addition, in Patent Document 4, a gusset is formed by folding a sheet into a side surface of a bag, and heat sealing is performed in the vertical direction between the front surface of the bag and the side surface of the bag and between the back surface of the bag and the side surface of the bag. And a heat-sealed side seal on one side of the bag is integrally formed with a handle.

特開２００１−３２８６４４号公報JP, 2001-328644, A 特許第３３６４１６５号公報Japanese Patent No. 3364165 特開２００２−３０８２８９号公報JP-A-2002-308289 特開平０８−０２６３０２号公報JP, 08-026302, A

近年、合成樹脂製シートの所要部分をヒートシールして製袋される包装袋に関し、手で持って注出作業などができる重さの範囲でその収容量を大きくすることが望まれるようになってきている。 In recent years, regarding packaging bags that are made by heat-sealing required parts of synthetic resin sheets, it has become desirable to increase the storage capacity within a weight range that can be carried by hand and poured out. Is coming.

しかしながら、上述した従来の包装袋について収容量の増大に応じて耐久性のある合成樹脂製シートを採用した場合、袋正面や袋背面に袋胴部を構成するシートを貼り合わせた縦のシール部分が位置し、このシール部分が袋底にも及ぶ構成となり、そしてこの縦のシール部分の剛性が高いために曲がり難くなっていることから、収容物の充填に際して袋底に広がりが得られるように開いて充填を行なったとしても、前記シール部分があるシートとこれに連続する袋底とするシートとの間で適切な曲がりが生じないことから袋底が平面的に広がりのある形状とならずに自立し難い包装袋となる。 However, when a durable synthetic resin sheet is adopted for the conventional packaging bag described above in accordance with the increase in the storage capacity, a vertical seal portion obtained by bonding the sheets forming the bag body to the bag front surface or the bag back surface. Is located, and this seal part extends to the bag bottom, and since the vertical seal part has high rigidity, it is difficult to bend, so that the bag bottom can be expanded when filling the contents. Even if the bag is opened and filled, the bag bottom does not have a planarly wide shape because proper bending does not occur between the sheet having the seal portion and the continuous sheet serving as the bag bottom. It becomes a packaging bag that is difficult to stand on its own.

また、自立性を確保する方法としては袋底部に底マチを設け、袋側面のマチと底マチとを備える包装袋が検討されるが、合成樹脂製シートの貼り合わせによって得られる包装袋では底マチと袋側面のマチとが重なった部分から収容物の漏れが生じ易くなったり、重なった部分の落下衝撃性が極端に低くなって破袋してしまうという問題がある。 Also, as a method of ensuring independence, a packaging bag provided with a bottom gusset at the bottom of the bag, and a gusset on the side of the bag and a bottom gusset is considered, but in the packaging bag obtained by sticking synthetic resin sheets, the bottom There is a problem that the contents are likely to leak from a portion where the gusset and the gusset on the side surface of the bag overlap with each other, or the drop impact property of the overlapping portion becomes extremely low and the bag is broken.

そこで本発明は上記事情に鑑み、袋胴部にマチを設けることで袋底に平面的な広がりを形成し易くなる点を活かしつつ、袋胴部での袋正面中央や袋背面中央に設けられる縦シールが袋底に及ぶ構成とならないようにすることを課題とし、平面的な広がりを有する袋底を備えて自立性が良好な包装袋を提供することを目的とするものである。 Therefore, in view of the above circumstances, the present invention is provided in the center of the bag front or the center of the back of the bag in the bag body while taking advantage of the fact that the gusset is provided in the bag body to facilitate the formation of a planar spread on the bag bottom. An object of the present invention is to prevent the vertical seal from reaching the bottom of the bag, and to provide a packaging bag having a flat bottom and having good self-supporting property.

（請求項１の発明）
本発明は上記課題を考慮してなされたもので、袋正面から一方の袋側面を経て袋背面に亘って位置した一枚の本体シートと他方の袋側面に位置して一方の袋側面側に折り込み可能に設けられた一枚のマチシートとで袋胴部が形成されて、この袋胴部における本体シートの側辺とマチシートの側辺とをヒートシールしてなる側辺シール部分に取っ手が設けられ、
前記袋胴部の上部には、折り込んだ前記マチシートを間にして二つ折りにより相対した本体シートの上辺に沿ってヒートシールしてなる上辺シール部分を備えて、この上辺シール部分の前記一方の袋側面側に注出口栓を有する袋上部が形成され、
前記袋胴部の下部には、折り込んだ前記マチシートを間にして二つ折りにより相対した本体シートの下辺に沿ってヒートシールしてなる下辺シール部分を備えて、この下辺シール部分を中心とした袋正面と袋背面との離間により、本体シートとマチシートとが下辺シール部分側に向けて回り込んで前記袋正面と袋背面とが離間した方向と袋幅方向とに広がってなる袋底部が形成され、
前記袋底部での前記一方の袋側面側には、該袋底部の本体シートにおける一方の側面側のシートと袋胴部の本体シートにおける袋底部側のシートとをヒートシールしてなる袋底側辺シール部分を備え、
前記袋底側辺シール部分は前記袋正面と袋背面とが離間した方向に広がりを有して、一方の袋側面が、前記袋底側辺シール部分側を下辺として起立しているとともに、起立した前記一方の袋側面の上方に前記注出口栓が位置され、
前記一方の袋側面とこの袋側面の上方となる注出口栓とが、前記取っ手とは袋幅方向で反対となる側に配置されていることを特徴とする自立包装袋を提供して、上記課題を解消するものである。 (Invention of Claim 1)
The present invention has been made in view of the above problems, one main body sheet located from the bag front side to the bag back side through one bag side surface and the other bag side surface to the one bag side surface side. A bag body is formed with a single foldable gusset sheet , and a handle is provided at a side edge seal portion formed by heat-sealing the side edge of the main body sheet and the side edge of the gusset sheet in the bag body portion. The
The upper part of the bag body is provided with an upper side seal part formed by heat-sealing along the upper side of the main body sheet facing each other by folding the folded gusset sheet in between, and the one side bag of the upper side seal part. A bag top with a spout plug on the side is formed,
The lower part of the bag body part is provided with a lower side seal part formed by heat-sealing along the lower side of the main body sheet facing each other by folding in two with the folded gusset sheet in between, and the bag centering on the lower side seal part Due to the distance between the front surface and the back surface of the bag, the main body sheet and the gusset sheet wrap around toward the lower side seal portion side, and a bag bottom portion is formed which spreads in the direction in which the bag front surface and the bag back surface are separated and the bag width direction. ,
On the one bag side surface side of the bag bottom portion, a bag bottom side formed by heat-sealing a sheet on one side surface side of the main body sheet of the bag bottom portion and a sheet on the bag bottom portion side of the main body sheet of the bag body portion. Equipped with a side seal part,
It said bag bottom border sealed portion has an extent in the direction of said bag front and bag back are separated from each other, one of the bags sides, with stands up in front Symbol bag bottom border sealed portion side as the bottom side, The spout plug is located above the side surface of the one bag that has stood upright,
Providing a self-supporting packaging bag, characterized in that the one bag side surface and a spout plug located above the bag side surface are arranged on the side opposite to the handle in the bag width direction, It solves the problem.

（請求項２の発明）
そして、本発明によれば、上記袋底側辺シール部分は、上記一方の袋側面における袋胴部の下部側のシート部分と、袋正面と袋背面とのそれぞれにおける袋胴部の下部側のシート部分とをヒートシールしてなり、該袋底側辺シール部分は袋底部側に折曲して袋底部の下面に貼り合わされていて、前記袋底側面シール部分を含む袋底部の平面視形状が略矩形とされていることが良好である。 (Invention of Claim 2)
Then, according to the present invention, the bag bottom side sealing portion is a sheet portion on the lower side of the bag body portion on the one bag side surface, and a lower portion of the bag body portion on each of the bag front surface and the bag back surface. The bag portion is heat-sealed with the sheet portion, and the bag bottom side sealing portion is bent to the bag bottom side and bonded to the lower surface of the bag bottom portion, and the bag bottom portion including the bag bottom side surface sealing portion has a plan view shape. It is preferable that is substantially rectangular.

（請求項３の発明）
また、本発明によれば、上記袋底側辺シール部分は、上記一方の袋側面における袋胴部の下部側のシート部分と、袋正面と袋背面とのそれぞれにおける袋胴部の下部側のシート部分とをヒートシールして三角形状のシール部分を形成した後に、三角形状のシール部分における前記一方の袋側面の下辺に沿った部分以外を切除して一方の袋側面の下辺に沿ったシール部分を帯状にしてなるものであり、この袋底側面シール部分を含む袋底部の平面視形状が略矩形とされていることが良好である。 (Invention of Claim 3)
Further, according to the present invention, the bag bottom side seal portion is a sheet portion on the lower side of the bag body portion on the one bag side surface and a lower side of the bag body portion on each of the bag front surface and the bag back surface. After forming a triangular seal portion by heat-sealing the sheet portion, the triangle seal portion is cut off except the portion along the lower side of the one bag side surface to seal along the lower side of the one bag side surface. The portion is formed in a band shape, and it is preferable that the bag bottom portion including the bag bottom side surface seal portion has a substantially rectangular shape in plan view.

（請求項４の発明）
また、本発明によれば、上記袋底部には、上記一方の袋側面を略起立状態にする傾倒抑止手段が備えられていて、
前記傾倒抑止手段は上記下辺シール部分であり、折り込んだマチシートを間にして二つ折りにより相対した本体シートの下辺に沿ってヒートシールした前記下辺シール部分の傾斜角度を袋胴部の高さ方向に対して直角または鋭角としてなるものであることが良好である。 (Invention of Claim 4)
Further, according to the present invention, the bag bottom portion is provided with tilting restraining means for making the one bag side surface substantially upright,
The tilt suppressing means is the lower side seal part, and the inclination angle of the lower side seal part heat-sealed along the lower side of the main body sheet facing each other by folding in the folded gusset sheet in the height direction of the bag body part. On the other hand, it is preferable that the angle is a right angle or an acute angle.

（請求項１の発明の効果）
請求項１の発明によれば、袋底部が平面方向に広がりのある部分として形成され、さらに注出口栓がある側の一方の袋側面が起立した状態となっているので、テーブルや棚などに置いた時には安定して自立する包装袋となり、収容物を安全に収容させておくことができる。そして、取っ手を備えるとともにその取っ手とは反対となる側に注出口栓があり、収容物を注出するときには取っ手に手を掛けて傾けることで、ブロー成形された容器のように簡単にして安全に収容物を注ぎ出すことができ、大容量であっても取り扱いが容易な包装袋が提供できるという効果がある。 (Effect of the invention of claim 1)
According to the invention of claim 1, since the bag bottom portion is formed as a portion that is wide in the plane direction, and one of the bag side surfaces on the side where the spout plug is present is erected, so that it can be placed on a table or shelf. When placed, it becomes a stable and self-supporting packaging bag, and the contained items can be safely stored. There is a handle and there is a spout plug on the side opposite to the handle, and when pouring out the contents, tilt the handle by tilting it to make it as simple and safe as a blow-molded container. It is possible to provide a packaging bag that can be easily poured out even if it has a large capacity and can be poured out.

（請求項２の発明の効果）
請求項２の発明によれば、一方の袋側面の下辺側をシール部分として硬さを高めて袋底部を略矩形状としているので、包装袋が自立する状態がより安定するものとなる。 (Effect of the invention of claim 2)
According to the second aspect of the present invention, the lower side of the side surface of one bag is used as a seal portion to increase the hardness and make the bag bottom part substantially rectangular, so that the packaging bag becomes more stable in a self-supporting state.

（請求項３の発明の効果）
請求項３の発明によれば、請求項２の発明と同様に一方の袋側面の下辺側をシール部分として硬さを高めて袋底部を略矩形状としているので、包装袋が自立する状態がより安定するものとなる。 (Effect of the invention of claim 3)
According to the third aspect of the invention, as in the second aspect of the invention, the lower side of one bag side surface is used as a seal portion to increase hardness and make the bag bottom part into a substantially rectangular shape. It will be more stable.

（請求項４の発明の効果）
請求項４の発明によれば、注出口栓が位置する側の一方の袋側面が略起立とされるので、この包装袋が安定して自立するようになる。 (Effect of the invention of claim 4)
According to the fourth aspect of the present invention, since one bag side surface on the side where the spout plug is located is substantially upright, the packaging bag can be stably self-supporting.

本発明に係る自立包装袋の一例を一方の袋側面の斜め上方から見た状態で示す説明図である。It is explanatory drawing which shows an example of the self-supporting packaging bag which concerns on this invention in the state seen from diagonally upward of one bag side surface. 同じく一例を他方の袋側面の斜め上方から見た状態で示す説明図である。It is explanatory drawing which similarly shows an example in the state seen from the diagonally upper side of the other bag side surface. 同じく一例を袋底部側から見た状態で示す説明図である。It is explanatory drawing which similarly shows an example in the state seen from the bag bottom part side. 一例における一方の袋側面の下部のシート部分と袋正面及び袋背面の下部のシート部分とをヒートシールしてなる袋底側辺シール部分を示す説明図である。It is explanatory drawing which shows the bag bottom side edge|side seal part formed by heat-sealing the lower sheet|seat part of one bag side surface in one example, and the lower sheet|seat part of the bag front and bag back. 切除して形成された袋底側辺シール部分を示す説明図である。It is explanatory drawing which shows the bag bottom side seal part formed by cutting. マチシートを間にして袋胴部の下辺をヒートシールして傾倒抑止手段が形成された状態と、袋底側辺シール部分が得られる部分の１／２長さ及びマチ部の１／２長さとを示す説明図である。A state in which a tilt suppressing means is formed by heat-sealing the lower side of the bag body with a gusset sheet in between, and a half length of a portion where a bag bottom side sealing portion is obtained and a half length of the gusset portion. FIG. 袋底側辺シール部分の長さ及びマチ部長さを示す説明図である。It is explanatory drawing which shows the length of a bag bottom side edge|side seal part, and a gusset part length.

つぎに本発明を図１から図７に示す実施の形態に基づいて詳細に説明する。図中１は自立包装袋で、該自立包装袋１は図１に示されているように袋胴部２の上部が袋幅方向に亘って扁平な状態にして閉じられていて、その一端側に注出口栓３が取り付けられているとともに、袋胴部２の下部は平面方向に広がりのある略矩形形状にして閉じられており、テーブルや棚などの上に置いたときに安定して自立できるようにしているものである。そして、自立包装袋１は前記注出口栓３以外の部分が合成樹脂製シートからなるもので、この合成樹脂製シートは片面をシーラント層とした積層シートであって、所要部分をヒートシールして貼り合わせることで有底の袋状としている。 Next, the present invention will be described in detail based on the embodiment shown in FIGS. In the figure, 1 is a self-supporting packaging bag, and the self-supporting packaging bag 1 has a bag body 2 whose upper portion is closed in a flat state across the bag width direction as shown in FIG. The spout 3 is attached to the bottom of the bag body 2, and the lower part of the bag body 2 is closed in a substantially rectangular shape that is wide in the plane direction, so that it can be stably supported by itself when placed on a table or shelf. It is something that can be done. The self-standing packaging bag 1 has a portion other than the spout 3 made of a synthetic resin sheet, and the synthetic resin sheet is a laminated sheet having a sealant layer on one side, and the necessary portion is heat-sealed. It is made into a bag with a bottom by sticking together.

（袋胴部）
上記袋胴部２は、袋正面４から一方の袋側面５を経て袋背面６に亘って位置する一枚の本体シート７と、前記一方の袋側面５と袋幅方向で相対する他方の袋側面８に位置してその一方の袋側面５側に折り込み可能とされた一枚のマチシート９とからなるものである。本体シート７とマチシート９とは共に同じ合成樹脂製シートであって、本体シート７とマチシート９との相対する辺部をヒートシールして袋胴部２が形成され、さらに本体シート７の側辺とこれにヒートシールにより貼り合わされているマチシート９の側辺との側辺シール部分１０それぞれが外方に延設され、図２に示すようにこの側辺シール部分１０それぞれに切り込みなどを行なって、手掛けできる取っ手１１を形成している。 (Bag body)
The bag body portion 2 includes one main body sheet 7 located from the bag front surface 4 to the one bag side surface 5 and the bag back surface 6, and the other bag which faces the one bag side surface 5 in the bag width direction. It is composed of a single gusset sheet 9 which is located on the side surface 8 and can be folded into one of the bag side surface 5 sides. Both the main body sheet 7 and the gusset sheet 9 are made of the same synthetic resin sheet, and the opposite side portions of the main body sheet 7 and the gusset sheet 9 are heat-sealed to form the bag body portion 2. Further, the side edges of the main body sheet 7 are formed. And each side edge seal portion 10 of the gusset sheet 9 attached to the side edge of the gusset sheet 9 by heat sealing are extended outwardly, and each side edge seal portion 10 is notched as shown in FIG. The handle 11 that can be handled is formed.

（袋上部）
袋胴部２の上部には上述したように扁平な状態として閉じられている袋上部１２が形成されていて、二つ折りとした本体シート７の間に折り込んだマチシート９を配し、マチシート９を間にした状態で本体シート７の相対する上辺に沿ってヒートシールをして上辺シール部分１３を備えるとともに、前記ヒートシールに際して事前に一方の袋側面５側となる部分に上記注出口栓３の取付部を本体シート７の上辺の間に挟み込みして溶着することで、注出口栓３が上辺シール部分１３での一方の袋側面５側に有するようにして袋上部１２が形成されている。なお、袋上部１２での注出口栓３が取り付けられている部分以外の部分は包装袋１に収容物を充填後にヒートシールが行なわれる。 (Upper bag)
As described above, the bag upper part 12 that is closed in a flat state is formed on the upper part of the bag body portion 2. The folded gusset sheet 9 is arranged between the body sheets 7 that are folded in half, and the gusset sheet 9 is attached. The main sheet 7 is heat-sealed along the opposite upper sides of the main sheet 7 in a state of being interposed, and the upper-side sealing portion 13 is provided. By sandwiching the attachment portion between the upper sides of the main body sheet 7 and welding them, the bag upper portion 12 is formed such that the spout 3 is located on one bag side surface 5 side of the upper side seal portion 13. The portion of the bag upper portion 12 other than the portion to which the spout plug 3 is attached is heat-sealed after the packaging bag 1 is filled with the contents.

（袋底部）
袋胴部２の下部にはこの自立包装袋１をテーブルや棚などの平面に正置したときに自立することができるようにするために平面方向に広がった袋底部１４を形成して、この袋底部１４によって袋胴部２の下部が閉じられている。袋底部１４は、図３に示すように折り込んだマチシート９を間にして二つ折りにより相対した本体シート７の下辺に沿ってヒートシールをした下辺シール部分１５を備えている。この下辺シール部分１５を得るためのヒートシールは、マチシート９の取付のためのヒートシールと同時に行なうことが可能である。 (Bottom of bag)
At the lower part of the bag body portion 2, a bag bottom portion 14 is formed which is widened in a plane direction so that the self-supporting packaging bag 1 can be self-supporting when placed directly on a flat surface such as a table or a shelf. The bottom of the bag body 2 is closed by the bag bottom portion 14. As shown in FIG. 3, the bag bottom portion 14 is provided with a lower side seal portion 15 which is heat-sealed along the lower side of the main body sheet 7 facing each other by folding the gusset sheet 9 in between. The heat sealing for obtaining the lower side seal portion 15 can be performed simultaneously with the heat sealing for attaching the gusset sheet 9.

そして、袋底部１４では、上記下辺シール部分１５の位置を通る立平面を中心として袋胴部２での袋正面４と袋背面６との間が開くように袋胴部２の内側を広げ、袋胴部２での袋正面４と袋背面６とを離間させることで、本体シート７における袋正面４につながる袋胴部２の下部側のシート部分１６と、袋背面６につながる袋胴部２の下部側のシート部分１７とが下辺シール部分側に向けて回り込むようになり、また、マチシート９における他方の袋側面８につながる袋胴部２の下部側のシート部分１８も下辺シール部分１５側に向けて回り込むようになり、これによって袋底部１４を、袋正面４と袋背面６とが離間した方向と袋幅方向とに広がってなる略矩形状に形成している。 Then, in the bag bottom portion 14, the inside of the bag body portion 2 is widened so that the space between the bag front surface 4 and the bag back surface 6 in the bag body portion 2 is opened around the vertical plane that passes through the position of the lower side seal portion 15. By separating the bag front surface 4 and the bag back surface 6 in the bag body portion 2, the lower sheet portion 16 of the bag body portion 2 connected to the bag front surface 4 in the main body sheet 7 and the bag body portion connected to the bag back surface 6. The sheet portion 17 on the lower side of 2 wraps around toward the lower seal portion side, and the lower sheet portion 18 of the bag body 2 connected to the other bag side surface 8 of the gusset sheet 9 also lower side seal portion 15. The bag bottom portion 14 is formed in a substantially rectangular shape in which the bag front surface 4 and the bag back surface 6 are widened in the direction in which they are separated from each other and the bag width direction.

袋底部１４の一方の袋側面５側には、ヒートシールをして剛性が高められた袋底側辺シール部分１９を上記袋正面４と袋背面６との離間方向に沿った方向に広がりを有した状態にして備えている。そして、図１から図３に示すように自立包装袋１では上記一方の袋側面５が前記袋底側辺シール部分１９側を下辺として起立した状態となっていて、略矩形状とされた袋底部１４の前記剛性が高い袋底側辺シール部分１９を接地させて、また、上記シート部分１６とシート部分１７と他方の袋側面８側のシート部分１８を接地させることで安定して自立するものとなる。 On one side 5 side of the bag bottom portion 14, a bag bottom side sealing portion 19 which is heat-sealed and has increased rigidity is spread in the direction along the separation direction between the bag front surface 4 and the bag back surface 6. It has been in a state of having been. Then, have a state self-standing packaging bag 1 bag sides 5 one of said at is erected as the bottom side of the bag bottom-side side seal portion 19 side as shown in FIGS. 1-3, is a substantially rectangular bag The bag bottom side seal portion 19 having high rigidity of the bottom portion 14 is grounded, and the seat portion 16 and the seat portion 17 and the seat portion 18 on the other bag side surface 8 side are grounded, so as to be stably self-supporting. Will be things.

また、一方の袋側面５の上方に注出口栓３が位置されていて、注出口栓３と一方の袋側面５とに対して袋幅方向で反対側に配置されている上記取っ手１１に手を掛けて持ち上げ、注出口栓３が下となるように傾けることで、ブロー容器のようにして収容物を簡単に注出することができるものとなる。 Further, the spout 3 is positioned above the one bag side surface 5, and the hand 11 is placed on the opposite side of the spout 3 and the one bag side surface 5 in the bag width direction. It is possible to easily pour out the contents, like a blow container, by hanging up and tilting, and tilting the spout plug 3 downward.

（袋底側辺シール部分）
上記袋底側辺シール部分１９は、袋底部１４の形成に際して袋正面４と袋背面６との間を開くことで、一方の袋側面５における袋胴部２の下部側のシート部分２０が、図４に示されているように袋正面４と袋背面６とのそれぞれにおける袋胴部２の下部側の上記シート部分１６、１７に重なり、前記シート部分２０をシート部分１６、１７に重ね合わせた状態でヒートシールしてなるものであり、略三角形状にして上述のように袋正面４と袋背面６とが離間した方向で広がりを有している。 (Bag bottom side seal part)
The bag bottom side seal portion 19 is opened between the bag front surface 4 and the bag back surface 6 when the bag bottom portion 14 is formed, so that the sheet portion 20 on the lower side of the bag body portion 2 on one bag side surface 5 is As shown in FIG. 4, the sheet portions 16 and 17 on the lower side of the bag body 2 in the bag front surface 4 and the bag back surface 6 are overlapped with each other, and the sheet portion 20 is overlapped with the sheet portions 16 and 17. In this state, the bag is heat-sealed in a substantially triangular shape, and as described above, the bag front surface 4 and the bag back surface 6 are widened in the direction in which they are separated from each other.

そして、上記略三角形状とした袋底側辺シール部分１９が袋底部１４側に折曲されて袋底部１４の下面に貼り合わされており、この袋底側辺シール部分１９を含む袋底部１４の平面視形状を上述のように略矩形状としている。 The bag bottom side seal portion 19 having the substantially triangular shape is bent toward the bag bottom portion 14 side and bonded to the lower surface of the bag bottom portion 14, and the bag bottom side seal portion 19 including the bag bottom side seal portion 19 is formed. The planar view shape is a substantially rectangular shape as described above.

なお、上記実施の例においては袋底側辺シール部分１９を略三角形状のまま袋底部１４の下面に重ね合わせたものとして説明したが、本発明にあってはこの例に限定されるものではない。図５はその他の例を示していて、上記シート部分２０をシート部分１６、１７に重ね合わせた状態でヒートシールして三角形状のシール部分を形成した後に、その三角形状のシール部分における一方の袋側面５の下辺に沿った部分以外を切除して、一方の袋側面５の下辺に沿ったシール部分を帯状にすることで、この袋底側辺シール部分１９を得ることもできる。この場合も上述のように袋底側辺シール部分１９を含む袋底部１４の平面視形状を略矩形状とする。図４において切除箇所を一点鎖線で示している。また、図４で図示された自立包装袋の形態は、説明上、注出口栓を有するとともに袋胴部上部を閉じた状態で前記三角形状部分が外方に張り出したものとされているが、三角形状とされた部分の袋底部下面への折り重ねは、注出口栓の取付の前に行なうものである。 In the above embodiment, the bag bottom side sealing portion 19 is described as being overlapped with the lower surface of the bag bottom portion 14 in a substantially triangular shape, but the present invention is not limited to this example. Absent. FIG. 5 shows another example, in which the sheet portion 20 is heat-sealed in a state of being superposed on the sheet portions 16 and 17 to form a triangular sealing portion, and then one of the triangular sealing portions is formed. It is also possible to obtain the bag bottom side seal portion 19 by cutting away the portion other than the portion along the lower side of the bag side surface 5 and forming the seal portion along the lower side of one bag side surface 5 into a band shape. Also in this case, as described above, the bag bottom portion 14 including the bag bottom side sealing portion 19 has a substantially rectangular shape in plan view. In FIG. 4, the excision site is shown by a one-dot chain line. Further, in the form of the self-supporting packaging bag shown in FIG. 4, for the sake of explanation, it is assumed that the triangular portion is projected outward with the spout cap being closed and the upper portion of the bag body being closed. The folding of the triangular portion on the lower surface of the bag bottom is performed before the attachment of the spout plug.

（下辺シール部分による傾倒抑止手段）
本実施の例において袋底部１４には一方の袋側面５を略起立状態にして袋幅方向での外方に向けて傾倒しないようにする傾倒抑止手段２１が備えられている。前記傾倒抑止手段２１は袋底部１４の袋幅方向であって袋底部１４の中央を通って上記袋底側辺シール部分１９の中央に及ぶ位置となる上記下辺シール部分１５からなるものである。そして、図６に示されているように、折り込んだマチシート９を間にして二つ折りにより相対した本体シート７の下辺に沿ってヒートシールするときに、そのシール箇所の袋胴部２の高さ方向に対する傾斜角度θを直角または鋭角にして前記下辺シール部分１５が得られるようにしている。なお、図６において袋胴部２の高さ方向を矢印にて示した。 (Means to prevent tilting by the bottom seal part)
In the present embodiment, the bag bottom portion 14 is provided with tilting restraining means 21 for keeping one bag side surface 5 in a substantially upright state so as not to tilt outwardly in the bag width direction. The tilting restraining means 21 comprises the lower side seal portion 15 which is located in the bag width direction of the bag bottom portion 14 and extends through the center of the bag bottom portion 14 to reach the center of the bag bottom side sealing portion 19. Then, as shown in FIG. 6, when heat sealing is performed along the lower side of the main body sheet 7 facing each other by folding in two with the folded gusset sheet 9 in between, the height of the bag body portion 2 at the sealing location. The inclination angle θ with respect to the direction is set to a right angle or an acute angle so that the lower side seal portion 15 can be obtained. In FIG. 6, the height direction of the bag body 2 is indicated by an arrow.

袋底部１４が傾倒抑止手段２１を備えて形成されることの有用な点はつぎの通りである。略矩形状となっている袋底部１４に対し、袋上部１２は注出口栓３が存在するものの袋幅方向に沿って平たい扁平な形態となっていることから、一方の袋側面５は袋幅方向での外方に傾いた面として形成される。そして、収容物が充填されている時点では袋胴部２が胴膨れし易く、外方に傾いている一方の袋側面５が胴膨れして袋縦方向にも丸味を帯びた傾斜面となると、この一方の袋側面５の外方への傾きが大きくなって倒れる可能性がある。 The useful points of forming the bag bottom portion 14 with the tilt suppressing means 21 are as follows. In contrast to the substantially rectangular bag bottom portion 14, the bag upper portion 12 has the spout 3 but has a flat and flat shape along the bag width direction. Formed as an outwardly inclined surface in the direction. Then, when the contents are filled, the bag body portion 2 is likely to bulge, and one bag side surface 5 that is inclined outward is bulged to form a rounded inclined surface in the bag longitudinal direction. However, the outward inclination of the bag side surface 5 on one side may increase and the bag may fall down.

そこで本実施の例においては、袋胴部２の高さ方向に対する傾斜角度を直角または鋭角にした下辺シール部分１５からなる傾倒抑止手段２１を備えていて、袋胴部２の高さ方向に対する傾斜角度が開くとしても直角として形成されている下辺シール部分１５からなる傾倒抑止手段２１を備えることで、一方の袋側面５が略起立した形態の自立包装袋が得られ、好ましくは傾倒抑止手段２１を、前記傾斜角度を鋭角にして形成した下辺シール部分１５からなるものとすることで、一方の袋側面５が起立する度合の高い形態の自立包装袋が得られて、この自立包装袋の自立性が頗る良好になる。 In view of this, in the present embodiment, the tilting prevention means 21 including the lower side seal portion 15 in which the inclination angle of the bag body portion 2 with respect to the height direction is a right angle or an acute angle is provided, and the bag body portion 2 is inclined with respect to the height direction. By providing the tilt suppressing means 21 including the lower side seal portion 15 formed as a right angle even if the angle is opened, a self-supporting packaging bag in which one bag side surface 5 is substantially upright is obtained, and preferably the tilt suppressing means 21. Is composed of the lower side seal portion 15 formed with the inclination angle being an acute angle, whereby a self-supporting packaging bag having a high degree of standing of one bag side surface 5 is obtained, and the self-supporting packaging bag is self-supporting. It becomes very good.

実施の例における上記取っ手１１が設けられている側辺シール部分１０それぞれは上辺側で接合されている。このようにすることで側辺シール部分１０に設けられている取っ手１１が近付くこととなり、二つの取っ手に対して片手を掛け易くなる。なお、側辺シール部分１０相互の接合は必ずしも必要とされるものではない。 Each of the side seal parts 10 provided with the handle 11 in the embodiment is joined on the upper side. By doing so, the handle 11 provided on the side edge seal portion 10 approaches, and it becomes easy to put one hand on the two handles. It should be noted that joining of the side seal portions 10 to each other is not always necessary.

（マチ部の長さと袋底側辺シール部分の長さ）
袋底部１４は平面視形状が略矩形状であればよい。例えば、袋底部１４においてマチシート９によって形成されるマチ部の長さと、袋底部１４における袋底側辺シール部分１９の長さとを同じ長さとすれば、袋底部１４の平面視形状は略長方形となる。 (Length of gusset part and length of bag side seal part)
The bag bottom portion 14 may have a substantially rectangular shape in plan view. For example, if the length of the gusset portion formed by the gusset sheet 9 in the bag bottom portion 14 and the length of the bag bottom side seal portion 19 in the bag bottom portion 14 are the same, the plan shape of the bag bottom portion 14 is a substantially rectangular shape. Become.

なお、マチ部の長さは対の取っ手に片手を手掛けできるようにしているため、或る程度良好な長さが想定されているとともに、収容物に対する収容量を片手持ちできる範囲で確保すると、マチ部の長さと袋底側辺シール部分の長さを同じにしても袋底部の平面視形状は略正方形とはなり難い。 In addition, since the length of the gusset portion allows one hand to be handled by the pair of handles, a certain good length is assumed, and if the accommodation amount for the contained object is secured within a range that can be held by one hand, Even if the length of the gusset portion and the length of the bag bottom side sealing portion are the same, it is difficult for the bag bottom portion to have a substantially square shape in plan view.

また、マチ部の長さと袋底側辺シール部分の長さを同じとした場合、取っ手１１を有する側辺シール部分１０が存在していることから、袋底部１４を略長方形状とした場合に自立包装袋の重心が他方の袋側面８側に偏る可能性がある。その場合には、袋底側辺シール部分１９の長さをマチ部の長さより長くすることで、重心の偏りを無くすことができる。 When the length of the gusset portion and the length of the bag bottom side sealing portion are the same, since the side sealing portion 10 having the handle 11 is present, when the bag bottom portion 14 has a substantially rectangular shape. The center of gravity of the self-supporting packaging bag may be biased toward the side surface 8 of the other bag. In that case, by making the length of the bag bottom side seal portion 19 longer than the length of the gusset portion, the deviation of the center of gravity can be eliminated.

（マチ部に対する袋底側辺シール部分の長さの検討結果）
そこで、自立包装袋においてマチ部の長さに対する袋底側辺シール部分の長さを変更して、自立性の良否を確認し、自立性が良好となる袋底側辺シール部分の長さを検討した。その結果を表１に示した。 (Results of examination of the length of the bag bottom side seal part with respect to the gusset part)
Therefore, in the self-supporting packaging bag, change the length of the bag bottom side sealing part with respect to the length of the gusset part to check whether the self-supporting property is good or not, and determine the length of the bag bottom side sealing part that provides good self-supporting property. investigated. The results are shown in Table 1.

この検討には、図６と図７で示す扁平状態での袋胴部の高さ方向の長さｃを４００ｍｍ、マチ部の１／２長さａを５０ｍｍとし、袋底側辺シール部分の１／２長さｂが異なる８種の包装袋を作成し、５リットルの水を収容物として充填した。そして、８種の包装袋を正置して自立性に問題があるか否かを確認し、評価した。 In this examination, the length c in the height direction of the bag body portion in the flat state shown in FIGS. 6 and 7 was 400 mm, the half length a of the gusset portion was 50 mm, and the bag bottom side sealing portion Eight types of packaging bags having different ½ lengths b were prepared, and 5 liters of water were filled as the contents. Then, eight types of packaging bags were placed upright, and it was confirmed whether or not there was a problem in independence, and evaluated.

Figure 0006728593
Figure 0006728593

袋底部において、マチ部の１／２長さａと袋底側辺シール部分の１／２長さｂとを同じ長さとした場合に自立性があることが判った。また、マチ部の１／２長さａより袋底側辺シール部分の１／２長さｂを長くすることで、重心の偏りを無くすことができる点が判った。 It was found that the bag bottom has self-sustainability when the half length a of the gusset portion and the half length b of the bag bottom side sealing portion have the same length. Further, it has been found that the deviation of the center of gravity can be eliminated by making the half length b of the bag bottom side seal portion longer than the half length a of the gusset portion.

そして、検討の結果から、マチ部の長さと袋底側辺シール部分の長さの関係として好ましい範囲は、ａ≦ｂ≦１．４ａであることが判った。 From the result of the examination, it was found that the preferable range of the relationship between the length of the gusset portion and the length of the bag bottom side sealing portion is a≦b≦1.4a.

また、ｂ＝３０ｍｍ、４０ｍｍのときに重心の若干の偏りがあるものの自立性には問題が無いことが確認できた。よって、マチ部の長さと袋底側辺シール部分の長さの関係として、０．６ａ≦ｂ＜ａとしても自立性に問題が無いことが判った。 Further, it was confirmed that there was no problem in self-sustaining although there was some deviation of the center of gravity when b=30 mm and 40 mm. Therefore, it was found that there is no problem in the self-sustaining property even if 0.6a≦b<a as the relationship between the length of the gusset portion and the length of the bag bottom side sealing portion.

また、ｂ＝８０ｍｍのときに重心の若干の偏りがあるものの自立性には問題が無いことが確認できた。よって、マチ部の長さと袋底側辺シール部分の長さの関係として、１．４ａ＜ｂ≦１．６ａとしても自立性に問題が無いことが判った。 Further, it was confirmed that there was no problem in independence although there was a slight deviation of the center of gravity when b=80 mm. Therefore, it was found that there is no problem in self-sustainability even if 1.4a<b≦1.6a as the relationship between the length of the gusset portion and the length of the bag bottom side sealing portion.

１…自立包装袋
２…袋胴部
３…注出口栓
４…袋正面
５…一方の袋側面
６…袋背面
７…本体シート
８…他方の袋側面
９…マチシート
１０…側辺シール部分
１１…取っ手
１２…袋上部
１３…上辺シール部分
１４…袋底部
１５…下辺シール部分
１６…袋底部での袋正面につながる袋胴部の下部側のシート部分
１７…袋底部での袋背面につながる袋胴部の下部側のシート部分
１８…袋底部での他方の袋側面につながる袋胴部の下部側のシート部分
１９…袋底側辺シール部分
２０…一方の袋側面につながる袋胴部の下部側のシート部分
２１…傾倒抑止手段 1... Self-supporting packaging bag 2... Bag body part 3... Spout spout 4... Bag front surface 5... One bag side surface 6... Bag back surface 7... Main body sheet 8... Other bag side surface 9... Machi sheet 10... Side seal portion 11... Handle 12...Bag upper part 13...Upper side seal part 14...Bag bottom part 15...Bottom side seal part 16...Seat part on the lower side of the bag body part connected to the bag front at the bag bottom 17...Bag cylinder connected to the bag back at the bag bottom Sheet portion on the lower side of the bag portion 18... Sheet portion on the lower side of the bag body portion connected to the other bag side surface at the bag bottom portion 19... Bag bottom side sealing portion 20... Lower portion of the bag body portion connected to one bag side surface Seat portion 21... Tilt prevention means

Claims (4)

袋正面から一方の袋側面を経て袋背面に亘って位置した一枚の本体シートと他方の袋側面に位置して一方の袋側面側に折り込み可能に設けられた一枚のマチシートとで袋胴部が形成されて、この袋胴部における本体シートの側辺とマチシートの側辺とをヒートシールしてなる側辺シール部分に取っ手が設けられ、
前記袋胴部の上部には、折り込んだ前記マチシートを間にして二つ折りにより相対した本体シートの上辺に沿ってヒートシールしてなる上辺シール部分を備えて、この上辺シール部分の前記一方の袋側面側に注出口栓を有する袋上部が形成され、
前記袋胴部の下部には、折り込んだ前記マチシートを間にして二つ折りにより相対した本体シートの下辺に沿ってヒートシールしてなる下辺シール部分を備えて、この下辺シール部分を中心とした袋正面と袋背面との離間により、本体シートとマチシートとが下辺シール部分側に向けて回り込んで前記袋正面と袋背面とが離間した方向と袋幅方向とに広がってなる袋底部が形成され、
前記袋底部での前記一方の袋側面側には、該袋底部の本体シートにおける一方の側面側のシートと袋胴部の本体シートにおける袋底部側のシートとをヒートシールしてなる袋底側辺シール部分を備え、
前記袋底側辺シール部分は前記袋正面と袋背面とが離間した方向に広がりを有して、一方の袋側面が、前記袋底側辺シール部分側を下辺として起立しているとともに、起立した前記一方の袋側面の上方に前記注出口栓が位置され、
前記一方の袋側面とこの袋側面の上方となる注出口栓とが、前記取っ手とは袋幅方向で反対となる側に配置されていることを特徴とする自立包装袋。 A bag body consisting of one main body sheet located from the front of the bag to the back of one bag to the back of the bag and one gusset sheet located on the side of the other bag and foldable to the side of one bag. A portion is formed, and a handle is provided on a side edge seal portion formed by heat sealing the side edge of the main body sheet and the side edge of the gusset sheet in the bag body,
The upper part of the bag body is provided with an upper side seal part formed by heat-sealing along the upper side of the main body sheet facing each other by folding the folded gusset sheet in between, and the one side bag of the upper side seal part. A bag top with a spout plug on the side is formed,
The lower part of the bag body part is provided with a lower side seal part formed by heat-sealing along the lower side of the main body sheet facing each other by folding in two with the folded gusset sheet in between, and the bag centering on the lower side seal part Due to the distance between the front surface and the back surface of the bag, the main body sheet and the gusset sheet wrap around toward the lower side seal portion side, and a bag bottom portion is formed which spreads in the direction in which the bag front surface and the bag back surface are separated and the bag width direction. ,
On the one bag side surface side of the bag bottom portion, a bag bottom side formed by heat-sealing a sheet on one side surface side of the main body sheet of the bag bottom portion and a sheet on the bag bottom portion side of the main body sheet of the bag body portion. Equipped with a side seal part,
It said bag bottom border sealed portion has an extent in the direction of said bag front and bag back are separated from each other, one of the bags sides, with stands up in front Symbol bag bottom border sealed portion side as the bottom side, The spout plug is located above the side surface of the one bag that has stood upright,
The self-supporting packaging bag, wherein the one bag side surface and the spout stopper located above the bag side surface are arranged on the side opposite to the handle in the bag width direction. 上記袋底側辺シール部分は、上記一方の袋側面における袋胴部の下部側のシート部分と、袋正面と袋背面とのそれぞれにおける袋胴部の下部側のシート部分とをヒートシールしてなり、該袋底側辺シール部分は袋底部側に折曲して袋底部の下面に貼り合わされていて、前記袋底側面シール部分を含む袋底部の平面視形状が略矩形とされている請求項１に記載の自立包装袋。 The bag bottom side sealing portion is formed by heat-sealing the sheet portion on the lower side of the bag body portion on the one bag side surface and the sheet portion on the lower side of the bag body portion in each of the bag front surface and the bag back surface. The bag bottom side sealing portion is bent to the bag bottom side and is attached to the lower surface of the bag bottom portion, and the bag bottom portion including the bag bottom side sealing portion has a substantially rectangular shape in plan view. Item 1. The self-supporting packaging bag according to item 1. 上記袋底側辺シール部分は、上記一方の袋側面における袋胴部の下部側のシート部分と、袋正面と袋背面とのそれぞれにおける袋胴部の下部側のシート部分とをヒートシールして三角形状のシール部分を形成した後に、三角形状のシール部分における前記一方の袋側面の下辺に沿った部分以外を切除して一方の袋側面の下辺に沿ったシール部分を帯状にしてなるものであり、この袋底側面シール部分を含む袋底部の平面視形状が略矩形とされている請求項１に記載の自立包装袋。 The bag bottom side sealing portion is formed by heat-sealing the sheet portion on the lower side of the bag body portion on the one bag side surface and the sheet portion on the lower side of the bag body portion in each of the bag front surface and the bag back surface. After forming the triangular seal portion, the portion except the portion along the lower side of the one bag side surface in the triangular seal portion is cut off to form the seal portion along the lower side of the one bag side surface into a band shape. The self-supporting packaging bag according to claim 1, wherein the bag bottom including the bag bottom side seal portion has a substantially rectangular shape in plan view. 上記袋底部には、上記一方の袋側面を略起立状態にする傾倒抑止手段が備えられていて、
前記傾倒抑止手段は上記下辺シール部分であり、折り込んだマチシートを間にして二つ折りにより相対した本体シートの下辺に沿ってヒートシールした前記下辺シール部分の傾斜角度を袋胴部の高さ方向に対して直角または鋭角としてなるものである請求項１から３の何れか一項に記載の自立包装袋。 The bag bottom portion is provided with tilting restraining means for making the one bag side surface substantially upright,
The tilt suppressing means is the lower side seal part, and the inclination angle of the lower side seal part heat-sealed along the lower side of the main body sheet facing each other by folding in the folded gusset sheet in the height direction of the bag body part. The self-supporting packaging bag according to any one of claims 1 to 3, which is a right angle or an acute angle.
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