JPS638604Y2 - - Google Patents

Info

Publication number
JPS638604Y2
JPS638604Y2 JP1984137878U JP13787884U JPS638604Y2 JP S638604 Y2 JPS638604 Y2 JP S638604Y2 JP 1984137878 U JP1984137878 U JP 1984137878U JP 13787884 U JP13787884 U JP 13787884U JP S638604 Y2 JPS638604 Y2 JP S638604Y2
Authority
JP
Japan
Prior art keywords
bag
bottom wall
spot seal
standing pouch
standing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1984137878U
Other languages
Japanese (ja)
Other versions
JPS6153343U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1984137878U priority Critical patent/JPS638604Y2/ja
Publication of JPS6153343U publication Critical patent/JPS6153343U/ja
Application granted granted Critical
Publication of JPS638604Y2 publication Critical patent/JPS638604Y2/ja
Expired legal-status Critical Current

Links

Description

【考案の詳細な説明】[Detailed explanation of the idea]

(産業上の利用分野) この考案は、スタンデイングパウチと呼ばれる
自立性袋、特に底壁外面が非熱溶着性である自立
性袋に関する。 (従来技術) スタンデイングパウチは、前後壁の間に2つ折
りにした底壁を挿入し、側縁及び底縁で前後壁及
び前壁と底壁、後壁と底壁を熱溶着する。同時
に、両側縁においては底壁が開かないように溶着
するが、底壁外面が熱溶着性である場合にはその
まま他の部分と共に熱溶着すればよい。しかし、
底壁外面が非熱溶着性である場合は、底壁に適宜
の形の穴或いは切欠きを設け、この穴或いは切欠
きを通じて前後壁を溶着し、この溶着部によつて
底壁側縁を開かないように保持している。 この底壁の穴或いは切欠きによる溶着部はスポ
ツトシールと呼ばれるが、内容物を充填し、袋を
自立させた場合、このスポツトシールにはこれを
引離そうとする力が作用する。この力は特に充填
ずみの袋を底を下にして落下させた場合に特に強
く、破袋事故は殆んどこのような場合に生ずる。
破袋事故を防ぐため、このシール部を袋底縁に迄
拡げ、溶着強度を上げれば、底壁が拡がりにくく
なり、内容物を充填する場合に圧縮空気を吹込ん
でも底が開かない或いは袋の自立性が悪くなり充
填した袋を立てても傾いてしまう等の問題を生ず
る。 (この考案の解決しようとする問題点) この考案は、上記の強度、開底性、自立性がス
ポツトシールの位置によつて変ることを見出し、
その最適位置を求めることによつて上記の欠点を
含まぬスタンデイングパウチを得ようとするもの
である。 (問題点を解決するための手段) 以下、上記問題点を解決するための手段を本考
案の実施例に相当する図面を参照しながら説明す
る。 内面に熱溶着性の層を有する前後壁1,2の間
に、開底した場合に内面となる面に熱溶着性の層
を有し外面に熱非溶着性層を有する底壁3を、熱
非溶着性の面を内側にして2つ折り状に上記前後
壁間に挿入し、側縁及び底縁を熱溶着4してスタ
ンデイングパウチを形成する。しかし、このまま
では、底壁の側縁同志は溶着されず袋に自立性を
与えることが出来ないので、底壁に孔をあけ、こ
の孔を通じて前後壁を溶着したスポツトシール5
を設ける。 袋に内容物を充填し、底を下にして落下させる
と、内容物の慣性により底部を更に押開こうとす
る強い力が働き、これはスポツトシール5に集中
的に作用する。この力に対抗するためにはスポツ
トシール5は大きく、特に袋の下縁迄のび、第1
図の底縁とスポツトシール5との間隔aはゼロで
あることが望ましい。 しかし、そのようにすると、第2図のように開
底したとき、両側縁近くの底壁の開きは小さくな
りすぎ、自立性を損うと共に充填のための開底時
に抵抗が大きくなる。このため、スポツトシール
と底縁との間に間隔aをおけば、第3図に示すよ
うに、この部分が開くことによつて底壁が開き易
くなり、自立性、開底性は改善される。しかし逆
に、落下時にはこの部分が強く開かれることによ
り、スポツトシール5の下縁に引離そうとする応
力が集中し、強度的には不利となる。 本考案者は、上記の相反する問題を解決するた
めに、材質、大きさ、スポツトシールの径の異な
る種々のスタンデイングパウチについて、スポツ
トシールと底縁との間隔aを変えて多くの実験を
行なつた結果、その落下強度、自立性、開底性と
も、材質や大きさ等の要素の変化に関係なく、前
記間隔aが0.5mm〜5mmの範囲内にある場合に常
に良好であることを知見し、本考案に到達したも
のである。 即ち、本考案のスタンデイングパウチは、底壁
外面が非熱溶着性であり、該底壁の両端の孔、切
欠きを通じて前後壁が溶着されているスポツトシ
ールを有するスタンデイングパウチにおいて、該
スポツトシールと袋底縁との間隔aが0.5mmない
し5mmであることを特徴とする構成を採用するこ
とによつて、上記問題点を解決することができた
ものである。 (作用) 材質、大きさ、底折込み量及びスポツトシール
径の異なる多種類のスタンデイングパウチについ
て、スポツトシールの底縁からの間隔aを変えて
試作し、自立性、落下強度、開底性の評価を行な
つた。 自立性は80℃〜90℃の湯を該袋の規定容量充填
したときの袋の傾きを見た。 落下強度は、水を該袋の規定容量充填シールし
た後1.2mの高さからコンクリート面へ底部を下
にして落下させたときの破袋の有無を見た。 開底性は、開口部から空気を吹き込み、このと
きの底部の開き易さを見た。 その結果、下記の4種類のスタンデイングパウ
チA,B,C,Dについての上記評価は次の通り
であつた。 (イ) スタンデイングパウチA 材料構成 2軸延伸ポリエステル 12μ 2軸延伸ナイロン 15μ アルミ箔 7μ 無延伸ポリプロピレン 50μ を外側から順次積層した4層構造のフイル
ム、(以下のものについても外側からの積層順に
記載してある)。 袋サイズ 巾 220m/m 高さ 160m/m 底折込 29m/m スポツトシール径 15m/m 評価結果
(Field of Industrial Application) This invention relates to a self-supporting bag called a standing pouch, and particularly to a self-supporting bag whose bottom wall outer surface is non-thermally weldable. (Prior Art) In a standing pouch, a bottom wall folded in two is inserted between front and rear walls, and the front and rear walls, the front wall and the bottom wall, and the rear wall and the bottom wall are heat welded at the side edges and the bottom edge. At the same time, both edges are welded so that the bottom wall does not open, but if the outer surface of the bottom wall is heat-weldable, it may be heat-welded together with the other parts. but,
If the outer surface of the bottom wall is non-thermally weldable, a hole or notch of an appropriate shape is provided in the bottom wall, the front and rear walls are welded through this hole or notch, and the side edge of the bottom wall is attached to the side edge of the bottom wall by this welded portion. It is held so that it does not open. The welded portion formed by the hole or notch in the bottom wall is called a spot seal, and when the bag is filled with contents and stands on its own, a force acts on the spot seal to try to separate it. This force is particularly strong when a filled bag is dropped on its bottom, and most bag breakage accidents occur in these situations.
In order to prevent bag breakage accidents, by expanding this seal to the bottom edge of the bag and increasing the strength of the weld, the bottom wall will be difficult to expand, and the bottom will not open or the bag will break even if compressed air is blown in when filling the contents. This results in problems such as the bag becoming less self-supporting and tipping even if the filled bag is placed upright. (Problems to be solved by this invention) This invention has found that the strength, openability, and independence mentioned above vary depending on the position of the spot seal.
By finding the optimum position, the purpose is to obtain a standing pouch that does not have the above-mentioned drawbacks. (Means for solving the problems) Hereinafter, means for solving the above problems will be explained with reference to drawings corresponding to embodiments of the present invention. Between the front and rear walls 1 and 2 having a heat-weldable layer on the inner surface, a bottom wall 3 having a heat-weldable layer on the inner surface when opened and a heat-non-weldable layer on the outer surface, The pouch is folded into two and inserted between the front and rear walls with the non-heat-welding surface facing inside, and the side edges and bottom edges are heat-welded 4 to form a standing pouch. However, as it is, the side edges of the bottom wall are not welded together and it is not possible to give the bag independence, so a hole is made in the bottom wall and the front and back walls are welded through the hole to create a spot seal 5.
will be established. When a bag is filled with contents and dropped with its bottom facing down, a strong force acts to push the bottom further open due to the inertia of the contents, and this acts intensively on the spot seal 5. In order to counter this force, the spot seal 5 must be large, especially extending to the lower edge of the bag, and
The distance a between the bottom edge of the figure and the spot seal 5 is preferably zero. However, in this case, when the bottom is opened as shown in FIG. 2, the opening of the bottom wall near both side edges becomes too small, impairing the self-supporting property and increasing the resistance when the bottom is opened for filling. Therefore, if there is a gap a between the spot seal and the bottom edge, as shown in Figure 3, this part will open, making it easier for the bottom wall to open, improving the self-supporting property and opening ability. Ru. On the contrary, however, when the spot seal 5 is dropped, this part is strongly opened, and the stress that tends to pull it apart concentrates on the lower edge of the spot seal 5, which is disadvantageous in terms of strength. In order to solve the conflicting problems mentioned above, the present inventor conducted many experiments by changing the distance a between the spot seal and the bottom edge of various standing pouches with different materials, sizes, and spot seal diameters. As a result, its drop strength, self-sustainability, and bottom openability are always good when the distance a is within the range of 0.5 mm to 5 mm, regardless of changes in factors such as material and size. Based on this knowledge, we came up with the present invention. That is, the standing pouch of the present invention has a spot seal in which the outer surface of the bottom wall is non-thermally weldable and the front and rear walls are welded through holes and notches at both ends of the bottom wall. By adopting a configuration characterized in that the distance a from the bottom edge of the bag is 0.5 mm to 5 mm, the above problem can be solved. (Function) Various types of standing pouches with different materials, sizes, bottom folding amounts, and spot seal diameters were prototyped by varying the distance a from the bottom edge of the spot seal, and their self-standing, drop strength, and bottom openability were evaluated. I did this. The self-sustainability was determined by looking at the inclination of the bag when the bag was filled with a specified amount of hot water at 80°C to 90°C. Drop strength was determined by checking whether or not the bag broke when the bag was filled with water to the specified volume and sealed and then dropped from a height of 1.2 m onto a concrete surface with the bottom facing down. The openness of the bottom was determined by blowing air through the opening and checking how easily the bottom opened. As a result, the following four types of standing pouches A, B, C, and D were evaluated as follows. (a) Standing pouch A Material composition Biaxially oriented polyester 12μ Biaxially oriented nylon 15μ Aluminum foil 7μ Unoriented polypropylene 50μ A 4-layer film laminated sequentially from the outside (The following items are also listed in the order of lamination from the outside. ). Bag size Width 220m/m Height 160m/m Bottom fold 29m/m Spot seal diameter 15m/m Evaluation results

【表】 上記表中の数値は、10袋中不良の発生した袋数
を示す。 (ロ) スタンデイングパウチB 材料構成 2軸延伸ポリエステル 12μ 2軸延伸ナイロン 25μ アルミ箔 9μ キヤストポリプロピレン 70μ 袋サイズ 巾 200m/m 高 270m/m 底折込 50m/m スポツトシール径 20m/m 評価結果
[Table] The numbers in the table above indicate the number of defective bags out of 10 bags. (b) Standing pouch B Material composition Biaxially oriented polyester 12μ Biaxially oriented nylon 25μ Aluminum foil 9μ Cast polypropylene 70μ Bag size Width 200m/m Height 270m/m Bottom fold 50m/m Spot seal diameter 20m/m Evaluation results

【表】 (ハ) スタンデイングパウチC 材料構成 2軸延伸ナイロン 25μ (押出し)ポリエチレン 20μ ポリエチレン 120μ 袋サイズ:巾 160m/m 高 290m/m 底折込 40m/m スポツトシール径 19m/m 【table】 (c) Standing pouch C Material composition Biaxially stretched nylon 25μ (Extrusion) Polyethylene 20μ Polyethylene 120μ Bag size: width 160m/m High 290m/m Bottom folding 40m/m Spot seal diameter 19m/m

【表】 (ニ) スタンデイングパウチD 材料構成 2軸延伸ポリエステル 12μ 2軸延伸ナイロン 15μ アルミ箔 7μ キヤストポリプロピレン 50μ 袋サイズ:巾 100m/m 高 160m/m 底折込 28m/m スポツトシール径 15m/m 【table】 (d) Standing pouch D Material composition Biaxially stretched polyester 12μ Biaxially stretched nylon 15μ Aluminum foil 7μ Cast polypropylene 50μ Bag size: width 100m/m High 160m/m Bottom folding 28m/m Spot seal diameter 15m/m

【表】 以上の評価結果によれば、各種類のスタンデイ
ングパウチとも、落下強度はスポツト位置aが小
さい程よく、7mmになると破袋が発生することを
示している。しかし、aが0.5mm以下になると開
底性が悪くなり、0.2mmにもなれば各種類とも開
底不良品が発生した。自立性は、aが0.5mm以下
になると底壁が開きにくいために自立性が悪くな
り、0.2mmでは各種類とも略1/3の袋に傾きが見ら
れた。逆にaが大きくなりすぎ、7mmにもなると
底壁両側縁を溶着する効果が失なわれ、略全体の
袋に傾きが見られた。 以上で明らかなように、スポツトシールの位置
aを0.5mmないし5mmの範囲に設定することによ
つて、材質やサイズが異なる各種類のスタンデイ
ングパウチとも、自立性、落下強度、開底性に優
れたものが得られた。 (実施例) 第1図乃至第3図は、本考案に係るスタンデイ
ングパウチの実施例を示している。 該スタンデイングパウチは、内面に熱溶着性の
層を有する前後壁1,2の間に、内面が熱溶着性
の層を有し外面が熱非溶着性であり、熱非溶着性
の面を内側にして2つ折りされた底壁3が前記前
後壁間に挿入され、側縁及び底縁が熱溶着4され
ている。そして、自立性を与えるために、底壁3
に孔をあけ、該孔を通じて前後壁を溶着したスポ
ツトシール5を形成した。以上の基本構成は、従
来のスタンデイングパウチと同様である。 本考案の実施例では、上記構造からなるスタン
デイングパウチを、前記作用の欄で記載したスタ
ンデイングパウチA,B,C,Dと同様の材料及
びサイズで、スポツトシールと底縁との間隔aを
0.5mmと5mmに設定して形成した。その結果、各
スタンデイングパウチとも前記のように、自立
性、落下性、開底性とも10袋中1個の不良品も存
在しなかつた。また、比較例として、スポツトシ
ールと底縁との間隔aを、上記と同種のものにつ
いて、0.2mmと7mmに変えて製作したが、これら
のものは、何れも前記のように、自立性、落下強
度、開底性とも不良である不良品が発生した。 効 果 以上のように、本考案によれば、スポツトシー
ルと底縁との間隔を0.5mm〜5mmという特定の範
囲に設定するという簡単な構成によつて、高い強
度を保ちながら自立性、開底性にも優ぐれたスタ
ンデイングパウチが得られ、実用上顕著な効果を
奏するものである。
[Table] According to the above evaluation results, for each type of standing pouch, the smaller the spot position a, the better the drop strength, and bag breakage occurs when the spot position a is 7 mm. However, when a was less than 0.5 mm, the openability deteriorated, and when a was 0.2 mm, open-bottom defective products occurred in all types. Regarding the self-sustainability, when a was less than 0.5 mm, the bottom wall became difficult to open, resulting in poor self-sustainability, and when a was 0.2 mm, approximately 1/3 of the bags of each type were tilted. On the other hand, when a became too large, reaching 7 mm, the effect of welding both sides of the bottom wall was lost, and almost the entire bag was tilted. As is clear from the above, by setting the position a of the spot seal in the range of 0.5 mm to 5 mm, various types of standing pouches made of different materials and sizes have excellent self-standing, drop strength, and bottom opening ability. I got something. (Example) FIGS. 1 to 3 show an example of a standing pouch according to the present invention. The standing pouch has a heat-fusible layer on the inside and a non-heat-fusible outer surface between the front and rear walls 1 and 2, which have a heat-fusible layer on the inside, and a heat-fusible layer on the inside. A bottom wall 3 folded in two is inserted between the front and rear walls, and the side edges and bottom edge are heat welded 4. And to give independence, the bottom wall 3
A hole was made in the hole, and a spot seal 5 was formed by welding the front and rear walls through the hole. The above basic configuration is the same as that of a conventional standing pouch. In an embodiment of the present invention, a standing pouch with the above structure is made of the same material and size as the standing pouches A, B, C, and D described in the section of the function, and the distance a between the spot seal and the bottom edge is
It was formed by setting it to 0.5 mm and 5 mm. As a result, as mentioned above, none of the standing pouches had a single defective item out of 10 in terms of self-standing, dropability, and opening ability. In addition, as a comparative example, the same type of spot seal as above was manufactured by changing the distance a between the spot seal and the bottom edge to 0.2 mm and 7 mm. Some defective products were found to have poor drop strength and bottom opening properties. Effects As described above, according to the present invention, the simple structure of setting the distance between the spot seal and the bottom edge within a specific range of 0.5 mm to 5 mm allows for high strength, independence, and openness. A standing pouch with excellent bottom properties can be obtained, which has a significant practical effect.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの考案のスタンデイングパウチの未
充填の平面図、第2図は開底状態の斜視図、第3
図はスポツトシール部の部分拡大側面図である。 1,2:前後壁、3:底壁、4:溶着部、5:
スポツトシール。
Figure 1 is an unfilled plan view of the standing pouch of this invention, Figure 2 is a perspective view of the standing pouch with the bottom open, and Figure 3 is a perspective view of the standing pouch of this invention.
The figure is a partially enlarged side view of the spot seal portion. 1, 2: Front and rear walls, 3: Bottom wall, 4: Welded part, 5:
Spot sticker.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 底壁外面が非熱溶着性であり、該底壁の両端の
孔、切欠きを通じて前後壁が溶着されているスポ
ツトシールを有するスタンデイングパウチにおい
て、該スポツトシールと袋底縁との間隔aが0.5
mmないし5mmであることを特徴とするスタンデイ
ングパウチ。
In a standing pouch having a spot seal in which the outer surface of the bottom wall is non-thermal weldable and the front and rear walls are welded through holes and notches at both ends of the bottom wall, the distance a between the spot seal and the bottom edge of the bag is 0.5.
A standing pouch characterized by having a size of mm to 5 mm.
JP1984137878U 1984-09-13 1984-09-13 Expired JPS638604Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984137878U JPS638604Y2 (en) 1984-09-13 1984-09-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984137878U JPS638604Y2 (en) 1984-09-13 1984-09-13

Publications (2)

Publication Number Publication Date
JPS6153343U JPS6153343U (en) 1986-04-10
JPS638604Y2 true JPS638604Y2 (en) 1988-03-15

Family

ID=30696281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984137878U Expired JPS638604Y2 (en) 1984-09-13 1984-09-13

Country Status (1)

Country Link
JP (1) JPS638604Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007161317A (en) * 2005-12-15 2007-06-28 Fuji Seal International Inc Pouch container

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2502458Y2 (en) * 1992-08-12 1996-06-26 不二製油株式会社 Chocolate in a sealed container
JP4987058B2 (en) * 2009-10-27 2012-07-25 武蔵野産業株式会社 Food packaging bags
JP7126816B2 (en) * 2017-10-25 2022-08-29 大和製罐株式会社 bag-like container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53137774A (en) * 1977-05-07 1978-12-01 Toyo Seikan Kaisha Ltd Bag package and method of producing same
JPS5717947B2 (en) * 1981-04-24 1982-04-14
JPS5822922U (en) * 1981-08-08 1983-02-12 小池 軍蔵 tie

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150746U (en) * 1979-04-13 1980-10-30
JPS601076Y2 (en) * 1980-07-02 1985-01-12 凸版印刷株式会社 free standing bag
JPS58159240U (en) * 1982-04-21 1983-10-24 藤森工業株式会社 freestanding packaging bags

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53137774A (en) * 1977-05-07 1978-12-01 Toyo Seikan Kaisha Ltd Bag package and method of producing same
JPS5717947B2 (en) * 1981-04-24 1982-04-14
JPS5822922U (en) * 1981-08-08 1983-02-12 小池 軍蔵 tie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007161317A (en) * 2005-12-15 2007-06-28 Fuji Seal International Inc Pouch container

Also Published As

Publication number Publication date
JPS6153343U (en) 1986-04-10

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