JP2608842B2 - Self-supporting square bag and manufacturing method thereof - Google Patents
Self-supporting square bag and manufacturing method thereofInfo
- Publication number
- JP2608842B2 JP2608842B2 JP5062527A JP6252793A JP2608842B2 JP 2608842 B2 JP2608842 B2 JP 2608842B2 JP 5062527 A JP5062527 A JP 5062527A JP 6252793 A JP6252793 A JP 6252793A JP 2608842 B2 JP2608842 B2 JP 2608842B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- bonding portion
- oblique
- bag
- self
- 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 - Fee Related
Links
Landscapes
- Making Paper Articles (AREA)
- Bag Frames (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、袋の自立性を良好に保
持しつつ内容物を確実にシール可能な自立し得る角袋及
びその製造方法に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-supporting square bag capable of reliably sealing contents while maintaining good self-supporting property of the bag, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】いわゆるガセット方式による角袋であっ
て、内面を熱接着性素材としたフイルム又はシート状材
料よりなる筒状体の両側を折込み、各折込部によって形
成される四隅の下方に斜めに帯状の熱接着部を設け、筒
状体の底部は前記折込部を含めて一体に帯状に熱接着し
て底接着部を形成して構成した自立し得る角袋は知られ
ている。2. Description of the Related Art A so-called gusset type square bag is formed by folding both sides of a cylindrical body made of a film or a sheet-like material having an inner surface made of a heat-adhesive material, and obliquely below four corners formed by each folded portion. A self-supporting square bag is known in which a band-shaped heat bonding portion is provided, and the bottom of the tubular body is heat-bonded integrally with the band including the folded portion to form a bottom bonding portion.
【０００３】このような角袋において、各折込部をなす
底部に製袋工程で予め透孔又は切込みを穿設しておき、
この透孔又は切込みを介して筒状体の底部において前面
部と後面部とが互いに接着されるように、各折込部を含
めて筒状体の底部を水平方向に熱接着して底接着部を形
成することが知られている（実公昭５７−３７８９号公
報参照）。該角袋は、底部で前面部と後面部とが互いに
接着されているため底部が一体的に一方向に折れ曲がり
易く、内容物を充填した際垂直に自立して横倒れしにく
く、充填作業が確実に行われるといった利点を有する。[0003] In such a square bag, a through-hole or a notch is previously formed in a bottom portion forming each folding portion in a bag making process,
At the bottom of the tubular body, the bottom and the bottom of the tubular body, including each of the folds, are thermally bonded in the horizontal direction so that the front and rear portions are bonded to each other at the bottom of the tubular body through the through holes or cuts. Is known (see Japanese Utility Model Publication No. 57-3789). Since the front and rear sides of the sack are adhered to each other at the bottom, the bottom is easy to bend in one direction as one unit, and when the contents are filled, it stands vertically independently and is hard to fall down. It has the advantage that it is performed reliably.
【０００４】[0004]
【発明が解決しようとする課題】上記の角袋の製袋工程
では、各折込部をなす底部の所定の位置に透孔又は切込
みを穿設するよう、また折込みによって折込部の互いの
穿設箇所が対応しかつこの穿設箇所が底接着部内に適正
に収まるよう、制御されているが、連続的に行われる製
袋工程では必ずしも一定の位置になるとは限らず、多少
ずれることがある。すなわち、図５に示すように得られ
た角袋（１）の透孔又は切込み（８）が底接着部（７）
をはみ出て上方にずれた位置に形成されることがある。
このような場合、袋に充填される内容物の重量等によ
り、斜めに形成された帯状の熱接着部（６）の折込部頂
部（６ｅ）付近におけるシールが損なわれる（帯状の熱
接着部の折込部頂部付近には特に内容物の負担がかかる
ので該部におけるシールが損なわれ易い）と、水分を含
む内容物がこのシール部を通過して透孔又は切込み
（８）部分に至り、該透孔又は切込みから浸出、漏洩す
る事態を招くという不都合がある。本発明の目的は、こ
のような不都合を生じることがなく、袋の自立性を良好
に保持しつつ内容物を確実にシール可能な自立し得る角
袋及びその製造方法を提供することにある。In the bag making process of the square bag described above, through holes or cuts are formed at predetermined positions on the bottom of each folded portion, and the folded portions are mutually formed by folding. Although the positions are controlled so that the perforated parts are properly accommodated in the bottom adhesive part, the positions are not always fixed in a continuous bag-making process and may be slightly deviated. That is, the through holes or cuts (8) of the square bag (1) obtained as shown in FIG.
It may be formed at a position that extends off the edge.
In such a case, due to the weight of the contents filled in the bag, the sealing in the vicinity of the folded portion top (6e) of the obliquely formed band-shaped heat-bonded portion (6) is impaired ( Since the load of the contents is particularly applied to the vicinity of the top of the folding part, the seal at the part is easily damaged), and the contents containing water pass through the sealing part and reach the through hole or the cut (8) part, There is an inconvenience that the liquid may leak or leak from the through holes or cuts. An object of the present invention is to provide a self-supporting square bag capable of reliably sealing contents while maintaining good self-supporting of the bag without causing such inconvenience, and a method of manufacturing the same.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
め、本発明はなされたものである。すなわち、本発明
は、内面を熱接着性素材としたフイルム又はシート状材
料よりなる筒状体の両側を折込み、各折込部によって形
成される四隅の下方に帯状の斜状の熱接着部を形成する
と共に、前記各折込部の底部に穿設した透孔又は切込み
を介して筒状体の底部において前面部と後面部とが互い
に接着されるように、前記各折込部を含めて筒状体の底
部を熱接着して底接着部を形成した自立し得る角袋にお
いて、前記斜状の熱接着部の内側起点から底接着部に沿
って前記透孔又は切込みの位置に至るまでの間にのみ、
前記斜状の熱接着部と前記底接着部とに接する第二熱接
着部を設けたことを特徴とする自立し得る角袋である。SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention has been made. That is, the present invention folds both sides of a cylindrical body made of a film or sheet-like material having an inner surface formed of a heat-adhesive material, and forms a belt-like oblique heat-bonded portion below four corners formed by each fold. And a cylindrical body including each of the folded portions so that a front portion and a rear surface portion are bonded to each other at the bottom of the tubular body through a through hole or a cut formed in the bottom of each of the folded portions. In a self-supporting square bag in which the bottom of the bottom is thermally bonded to form a bottom bonded portion, between the inner starting point of the oblique heat bonded portion and the position of the through hole or cut along the bottom bonded portion. Only ,
A self-supporting square bag provided with a second thermal bonding portion that is in contact with the oblique thermal bonding portion and the bottom bonding portion.
【０００６】上記の角袋を製造するにあたっては、前記
第二熱接着部を、先ず前記斜状の熱接着部を形成する際
に該斜状の熱接着部と一緒に設け、次いで前記底接着部
を形成する際にも前記第二熱接着部を再度熱シールする
ことにより、第二熱接着部が強固にシールされるので、
余分な工程を経ることなく、該第二熱接着部を確実にシ
ールすることができるものである。In manufacturing the above-mentioned square bag, the second thermal bonding portion is first provided together with the oblique thermal bonding portion when forming the oblique thermal bonding portion, and then the bottom bonding portion is formed. Even when forming the portion, by heat sealing the second heat bonding portion again, since the second heat bonding portion is strongly sealed,
The second thermal bonding portion can be reliably sealed without passing through an extra step.
【０００７】[0007]
【作用】本発明に係る自立し得る角袋では、斜状の熱接
着部の内側起点から底接着部に沿って透孔又は切込みの
位置に至るまでの間にのみ、前記斜状の熱接着部と前記
底接着部とに接する第二熱接着部を設けたため、前記斜
状の熱接着部の折込部頂部付近のシールが損なわれて内
容物がこのシール部を通過しても、内容物は第二熱接着
部によって阻止され、透孔又は切込み部分に至ることが
なく、したがって透孔又は切込みから浸出、漏洩するこ
とがない。しかも、内容物を充填する際の袋の自立性を
低下させずに保持することができる。 In the self-supporting square bag according to the present invention, the oblique heat-bonding is performed only from the inside starting point of the oblique heat-bonding part to the position of the through hole or cut along the bottom bonding part. Since the second heat bonding portion in contact with the portion and the bottom bonding portion is provided, even if the seal near the top of the folded portion of the oblique heat bonding portion is damaged and the content passes through this seal portion, the content remains. Is blocked by the second thermal bond and does not reach the perforations or cuts and therefore does not leach or leak through the perforations or cuts. Moreover, the independence of the bag when filling the contents
It can be held without lowering.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１は本発明に係る角袋の一実施例の斜視図、図
２は他の実施例の正面図、図３は加熱板２１の形状を示
す平面図、図４は加熱板２２の形状を示す平面図であ
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of one embodiment of a square bag according to the present invention, FIG. 2 is a front view of another embodiment, FIG. 3 is a plan view showing the shape of a heating plate 21, and FIG. It is a top view shown.
【０００９】袋本体１は、内面をポリエチレン等の熱接
着性素材としたフイルム又はシート状材料によりなり、
背シール部２によって重ね合わされて接着され筒状体を
構成している。前面部３、後面部４の両側は夫々折込ま
れ、各折込部５ａ，５ｂ，５ｃ，５ｄによって形成され
る四隅の下方には、ほぼ折込部頂部を起点として斜め約
４５°に伸びる帯状の熱接着部６ａ，６ｂ，６ｃ，６ｄ
が形成されている。筒状体の底部は各折込部を含めて水
平方向に熱接着され、底接着部７が形成されているが、
各折込部５ａ，５ｂ，５ｃ，５ｄの底部には、透孔又は
切込み８が穿設されているので、筒状体の底部において
前面部３と後面部４とが互いに接着された形で底接着部
７が形成されている。符号１３はサイドシール部であ
る。The bag body 1 is made of a film or sheet material whose inner surface is made of a heat-adhesive material such as polyethylene.
The back seal part 2 overlaps and adheres to form a cylindrical body. Both sides of the front part 3 and the rear part 4 are folded, respectively, and below the four corners formed by the folded parts 5a, 5b, 5c, 5d, a belt-like heat extending approximately 45 ° obliquely starting from the top of the folded part. Adhesive parts 6a, 6b, 6c, 6d
Are formed. The bottom of the tubular body is thermally bonded in the horizontal direction, including the folded portions, to form a bottom bonded portion 7.
A through hole or cut 8 is formed in the bottom of each of the folded portions 5a, 5b, 5c, 5d, so that the front surface 3 and the rear surface 4 are bonded to each other at the bottom of the cylindrical body. The bonding portion 7 is formed. Reference numeral 13 denotes a side seal portion.
【００１０】斜状の熱接着部６ａ，６ｂ，６ｃ，６ｄの
内側起点から底接着部７に沿って透孔又は切込み８の位
置に至るまでの間９には、本発明の特徴の一をなす第二
熱接着部１０が設けられている。この第二熱接着部１０
は、斜状の熱接着部６ａ，６ｂ，６ｃ，６ｄと底接着部
７の両方夫々に接するように合計４箇所設けられてい
る。図１では非シール部１１を残して縦方向に帯状に形
成されているが、図２に示すように非シール部を残さな
いで三角形状となるように設けてもよい。しかし、いず
れの場合も第二熱接着部１０は、斜状の熱接着部６ａ，
６ｂ，６ｃ，６ｄの内側起点から底接着部７に沿って透
孔又は切込み８の位置に至るまでの範囲で形成すること
が肝要である。透孔又は切込み８の位置を越えてまで例
えば図２に示す非シール部１２部分まで全域に亘ってシ
ールすると、底接着部７との境部分の剛性が増す結果、
内容物を充填した際底接着部７が折れ曲がりにくくな
り、袋の自立性が低下してしまうため、自立性を良好に
保持可能でかつシールが有効となる範囲に止めたもので
ある。One of the features of the present invention is provided in the interval 9 from the starting point of the inside of the oblique thermal adhesive portions 6a, 6b, 6c, 6d to the position of the through hole or cut 8 along the bottom adhesive portion 7. A second thermal bonding portion 10 is provided. This second heat bonding portion 10
Are provided at a total of four locations so as to contact both the oblique heat-bonding portions 6a, 6b, 6c, 6d and the bottom bonding portion 7. In FIG. 1, the non-sealing portion 11 is left and formed in a strip shape in the vertical direction, but as shown in FIG. 2, the non-sealing portion may be provided so as to have a triangular shape without leaving the non-sealing portion. However, in any case, the second heat-bonding portion 10 has the oblique heat-bonding portion 6a,
It is important to form the holes 6b, 6c and 6d in the range from the inner starting point to the position of the through hole or cut 8 along the bottom bonding portion 7. When sealing is performed over the entire area beyond the position of the through hole or cut 8, for example, to the non-seal portion 12 shown in FIG. 2, the rigidity at the boundary with the bottom adhesive portion 7 increases,
When the contents are filled, the bottom adhesive portion 7 is unlikely to bend and the independence of the bag is reduced, so that the independence can be maintained satisfactorily and the seal is effective.
【００１１】上記の角袋の製造にあたっては、公知の製
造装置を利用して連続的に製袋することができるが、特
に次の方法により製造することが有利である。先ず内面
を熱接着性素材とした長尺のフイルム又はシート状材料
の両端縁を重ね合わせて接着し、筒状体を形成し、この
筒状体の両側の各折込部をなす底部位置に透孔又は切込
みを穿設する。次いで両側を折込む。そして、各折込部
によって形成される四隅の下方位置に帯状の斜状の熱接
着部を加熱板を押圧することにより形成する。この斜状
の熱接着部を形成する際に該斜状の熱接着部と一緒に第
二熱接着部を設ける。その際に用いる加熱板２１は図３
の平面図に示すように斜状の熱接着部と第二熱接着部と
に対応した形状を備えたものを用いることが好ましい。
２１ａは斜状の熱接着部に対応する部分で、２１ｂは第
二熱接着部に対応する部分である。２１ｃは底接着部に
対応する仮シール部分である。その後、底接着部を加熱
板を押圧することにより形成するが、この時にも第二熱
接着部を再度熱シールする。これにより、前面部３と後
面部４とが互いに接着された形で底接着部が形成され
る。この時に用いる加熱板２２は図４に示すように底接
着部と第二熱接着部とに対応した形状を備えたものが好
ましい。２２ａは第二熱接着部に対応する部分で、底接
着部に対応する部分２２ｂに対して横方向にスライド調
整可能になっている。さらに底接着部をカットして袋と
する。このような方法により、第二熱接着部が再度熱シ
ールされて強固にシールされ、余分な工程を経ることな
く、該第二熱接着部を確実にシールすることができるも
のである。[0011] In the production of the above-mentioned square bag, the bag can be continuously produced using a known production apparatus, but it is particularly advantageous to produce it by the following method. First, both edges of a long film or sheet-like material whose inner surface is made of a heat-adhesive material are overlapped and adhered to form a cylindrical body, and a transparent portion is formed at a bottom position of each folded portion on both sides of the cylindrical body. Drill holes or cuts. Then fold both sides. Then, a belt-like oblique heat bonding portion is formed by pressing a heating plate below the four corners formed by the folding portions. When forming the oblique thermal bonding portion, a second thermal bonding portion is provided together with the oblique thermal bonding portion. The heating plate 21 used at that time is shown in FIG.
It is preferable to use one having a shape corresponding to the oblique thermal bonding portion and the second thermal bonding portion as shown in the plan view of FIG.
21a is a portion corresponding to the oblique thermal bonding portion, and 21b is a portion corresponding to the second thermal bonding portion. 21c is a temporary sealing portion corresponding to the bottom bonding portion. Thereafter, the bottom bonding portion is formed by pressing the heating plate, and at this time, the second heat bonding portion is heat-sealed again. As a result, a bottom bonding portion is formed in such a manner that the front surface portion 3 and the rear surface portion 4 are bonded to each other. The heating plate 22 used at this time preferably has a shape corresponding to the bottom bonding portion and the second heat bonding portion as shown in FIG. Reference numeral 22a denotes a portion corresponding to the second heat bonding portion, which is slidable in a lateral direction with respect to the portion 22b corresponding to the bottom bonding portion. Further, the bottom adhesive portion is cut to form a bag. According to such a method, the second heat-bonded portion is heat-sealed again and firmly sealed, and the second heat-bonded portion can be reliably sealed without going through an extra step.
【００１２】[0012]
【発明の効果】本発明に係る角袋によれば、角袋の透孔
又は切込みの位置が底接着部をはみ出てずれた位置に形
成された場合に斜状の熱接着部の折込部頂部付近のシー
ルが損なわれても、内容物は第二熱接着部によって阻止
され、透孔又は切込み部分に至ることがなく、したがっ
て透孔又は切込みから浸出、漏洩することが確実に防止
される。しかも、第二熱接着部は底接着部に沿って透孔
又は切込みの位置に至るまでの範囲に止めたから、内容
物を充填する際の袋の自立性を低下させずに保持するこ
とができる。According to the square bag according to the present invention, when the through hole or cut position of the square bag is formed at a position protruding from the bottom adhesive portion and deviated, the top of the bent portion of the oblique heat adhesive portion. Even if the seal in the vicinity is damaged, the contents are blocked by the second heat-bonding portion and do not reach the through hole or the cut portion, so that it is surely prevented from leaching and leaking from the through hole or the cut portion. Moreover, since the second heat-bonding portion is stopped within the range up to the position of the through hole or the notch along the bottom bonding portion, the bag can be held without lowering the self-supporting property of the bag when filling the contents. .
【００１３】また、上記の角袋を製造するに当たり、第
二熱接着部を、先ず斜状の熱接着部を形成する際に該斜
状の熱接着部と一緒に設け、次いで底接着部を形成する
際にも第二熱接着部を再度熱シールすることにより、第
二熱接着部が強固にシールされるので、余分な工程を経
ることなく、シールの確実性を向上させることができ
る。Further, in manufacturing the above-mentioned square bag, the second thermal bonding portion is first provided together with the diagonal thermal bonding portion when forming the diagonal thermal bonding portion, and then the bottom bonding portion is provided. When the second heat-bonded portion is heat-sealed again during the formation, the second heat-bonded portion is firmly sealed, so that the reliability of the seal can be improved without an extra step.
【図１】本発明に係る角袋の一実施例の斜視図である。FIG. 1 is a perspective view of one embodiment of a square bag according to the present invention.
【図２】他の実施例の正面図である。FIG. 2 is a front view of another embodiment.
【図３】加熱板２１の形状を示す平面図である。FIG. 3 is a plan view showing the shape of a heating plate 21.
【図４】加熱板２２の形状を示す平面図である。FIG. 4 is a plan view showing the shape of a heating plate 22.
【図５】従来の角袋による例を説明する正面図である。FIG. 5 is a front view illustrating an example using a conventional square bag.
１ 袋本体 ２ 背シール部 ３ 前面部 ４ 後面部 ５ａ，５ｂ，５ｃ，５ｄ 折込部 ６ａ，６ｂ，６ｃ，６ｄ 斜状の熱接着部 ７ 底接着部 ８ 透孔又は切込み １０ 第二熱接着部 ２１，２２ 加熱板 1 bag body 2 back seal part 3 front face part 4 rear face part 5a, 5b, 5c, 5d folding part 6a, 6b, 6c, 6d oblique heat bonding part 7 bottom bonding part 8 through hole or notch 10 second heat bonding part 21,22 heating plate
Claims (2)
シート状材料よりなる筒状体の両側を折込み、各折込部
によって形成される四隅の下方に帯状の斜状の熱接着部
を形成すると共に、前記各折込部の底部に穿設した透孔
又は切込みを介して筒状体の底部において前面部と後面
部とが互いに接着されるように、前記各折込部を含めて
筒状体の底部を熱接着して底接着部を形成した自立し得
る角袋において、前記斜状の熱接着部の内側起点から底
接着部に沿って前記透孔又は切込みの位置に至るまでの
間にのみ、前記斜状の熱接着部と前記底接着部とに接す
る第二熱接着部を設けたことを特徴とする自立し得る角
袋。1. A tubular body made of a film or a sheet-like material whose inner surface is made of a heat-adhesive material is folded on both sides to form a belt-like oblique heat-bonded portion below four corners formed by each folded portion. At the same time, in order to bond the front surface portion and the rear surface portion to each other at the bottom portion of the tubular body through the through holes or notches formed in the bottom portion of each folding portion, the tubular body including the folding portions is formed. at the corner bag bottom can autonomously to form a bottom adhesive portion is thermally bonded only between the inner starting point of the slant of the thermoadhesive portion up to the position of the through hole or notch along the bottom bonding unit A self-supporting square bag having a second heat-bonding portion in contact with the oblique heat-bonding portion and the bottom heat-bonding portion.
接着部を形成する際に該斜状の熱接着部と一緒に設け、
次いで前記底接着部を形成する際にも前記第二熱接着部
を再度熱シールすることを特徴とする請求項１記載の自
立し得る角袋の製造方法。2. The second thermal bonding portion is provided together with the oblique thermal bonding portion when the oblique thermal bonding portion is first formed,
The method for producing a self-supporting square bag according to claim 1, wherein the second heat bonding portion is heat-sealed again even when the bottom bonding portion is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5062527A JP2608842B2 (en) | 1993-03-01 | 1993-03-01 | Self-supporting square bag and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5062527A JP2608842B2 (en) | 1993-03-01 | 1993-03-01 | Self-supporting square bag and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06255657A JPH06255657A (en) | 1994-09-13 |
| JP2608842B2 true JP2608842B2 (en) | 1997-05-14 |
Family
ID=13202756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5062527A Expired - Fee Related JP2608842B2 (en) | 1993-03-01 | 1993-03-01 | Self-supporting square bag and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2608842B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997026131A1 (en) * | 1996-01-18 | 1997-07-24 | Union Camp Corporation | Flat bottom plastic bag and method of making the same |
| JPH1143155A (en) * | 1997-07-23 | 1999-02-16 | Hosokawa Yoko Co Ltd | Liquid container |
| US5944251A (en) * | 1998-01-07 | 1999-08-31 | Custom Packaging Systems, Inc. | Form fit container liner |
| KR100322924B1 (en) * | 1999-07-03 | 2002-02-02 | 장성창 | Packingbag and method for manufacturing the same |
| US7798711B2 (en) | 2004-07-27 | 2010-09-21 | Cdf Corporation | Flexible liner for FIBC or bag-in-box container systems |
| US9016555B2 (en) | 2007-04-03 | 2015-04-28 | Cdf Corporation | Flexible liner and bag-in-box container systems |
| US9120608B2 (en) | 2009-11-17 | 2015-09-01 | Cdf Corporation | Sustainable packaging system for shipping liquid or viscous products |
| WO2012068208A1 (en) | 2010-11-16 | 2012-05-24 | Cdf Corporation | Secondary packaging system for pre-packaged products |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5391879A (en) * | 1977-01-22 | 1978-08-12 | Oshio Sangyo Kk | Method of and device for producing selffstanding rectangular bag |
| JPS6455248U (en) * | 1987-09-30 | 1989-04-05 |
-
1993
- 1993-03-01 JP JP5062527A patent/JP2608842B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06255657A (en) | 1994-09-13 |
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