JPH09216638A - Self-supporting bag and its preparation - Google Patents
Self-supporting bag and its preparationInfo
- Publication number
- JPH09216638A JPH09216638A JP8025603A JP2560396A JPH09216638A JP H09216638 A JPH09216638 A JP H09216638A JP 8025603 A JP8025603 A JP 8025603A JP 2560396 A JP2560396 A JP 2560396A JP H09216638 A JPH09216638 A JP H09216638A
- Authority
- JP
- Japan
- Prior art keywords
- bag
- self
- forming sheet
- main body
- bottom part
- 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.)
- Granted
Links
Classifications
-
- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
- B31B2155/002—Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Bag Frames (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内容物を収納した
製品形態で底部が広がり、包装袋そのものが自立可能に
なる自立袋およびその自立袋を効率良く製造する方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-supporting bag in which a bottom portion is widened in a product form containing contents so that the packaging bag itself can be self-supporting and a method for efficiently manufacturing the self-supporting bag.
【０００２】[0002]
【従来の技術】従来、プラスチックフィルムからなるい
わゆるスタンディング袋で代表的なものとしては、ガゼ
ット袋があり、その他、底材を加工する方式もあるが、
いずれも自立性を良くするためには、図７に示されるよ
うに底部への底材を固着させるのが一般的である。図７
に示される従来の袋１００は、袋本体１１０と、折り込
まれた底材シート１２０とを備え、袋本体１１０と底材
１２０との融着部分１２１は円弧状であり、袋本体１１
０を形成する２枚のシート部分の合わせ目１１１と融着
部分１２１とが接合する部分は２つの点Ｑ，Ｑ（以下、
単に固定点Ｑ，Ｑという）にそれぞれ集結するように形
成されている。2. Description of the Related Art Conventionally, as a so-called standing bag made of a plastic film, there is a gusset bag, and there is a method of processing a bottom material.
In either case, in order to improve the self-supporting property, it is common to fix the bottom material to the bottom as shown in FIG. Figure 7
The conventional bag 100 shown in FIG. 1 includes a bag body 110 and a folded bottom sheet 120, and a fusion-bonded portion 121 between the bag body 110 and the bottom material 120 has an arc shape.
The portion where the seam 111 of the two sheet portions forming 0 and the fused portion 121 are joined is two points Q, Q (hereinafter,
They are formed so that they are respectively gathered at fixed points Q and Q).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、例えば
前記のスタンディング袋において、前記の固定点Ｑ，Ｑ
を有するものでは、袋の落下時に、固定点Ｑ，Ｑに応力
が集中し、この部分から破袋が生じ易いという問題があ
る。この問題を回避するためには、強靭性の高い薄いフ
ィルムを形成材料に用いれば良いのであるが、そのよう
なフィルムを用いて袋体を形成すると、フィルムの腰が
弱くなりすぎて袋の自立性という本来要求されるべき機
能が損なわれてしまうという問題が生じる。However, for example, in the above-mentioned standing bag, the above-mentioned fixing points Q, Q
However, in the case where the bag is dropped, stress is concentrated on the fixing points Q, Q when the bag is dropped, and there is a problem that the bag is easily broken from this portion. In order to avoid this problem, a thin film with high toughness can be used as a forming material, but when a bag is formed using such a film, the film becomes too weak and the bag becomes self-supporting. The problem that the originally required function of sex is impaired occurs.
【０００４】また、一般に、筒状の袋本体と底材とを融
着してなる折り畳み可能な自立袋においては、袋本体の
折り込み部に対応するように底材が折り込まれた状態で
融着されるので、袋本体および底材の折り込み部の交点
にピンホールやしわが発生し易く、そこから漏れを生ず
る可能性もある。In general, in a foldable self-standing bag made by fusing a tubular bag body and a bottom material, the bottom material is fused in a state of being folded so as to correspond to the folding part of the bag body. Therefore, pinholes and wrinkles are likely to occur at the intersections of the bag body and the folded portion of the bottom material, and leakage may occur from there.
【０００５】本発明は、かる事情に基づいてなされたも
のであり、本発明の目的は、耐衝撃性および自立性に優
れ、しかも底材が平板であって折り込み部を有していな
いことから上記のピンホールやしわの発生がなく、した
がってそこから漏れの生ずることのない自立袋およびそ
の自立袋を効率良く得ることのできる製造方法を提供す
ることにある。The present invention has been made under such circumstances, and an object of the present invention is that it is excellent in impact resistance and self-sustaining property, and that the bottom material is a flat plate and has no folded portion. It is an object of the present invention to provide a self-supporting bag that does not cause the pinholes and wrinkles and thus does not leak, and a manufacturing method capable of efficiently obtaining the self-supporting bag.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するた
め、本発明の自立袋は、袋の前側および後ろ側を構成す
る対向する一対の平面部と、折り襞状に内方に折り込ま
れた折り線を備えるように形成された２つの側面を有す
る筒状の袋本体部と、この袋本体部の一方の口部を封止
する底部形成シートとを備える自立袋であって、前記袋
本体部は、前記一方の口部において、対向する前記折り
線のそれぞれ任意の一点を基点とし、該基点から袋本体
部の一端までの折り線が袋本体部の側面側に折り返され
てなる四角形状の底部開き面を有し、該底部開き面の上
に平板な四角形状の底部形成シートが、その周縁に熱シ
ール部を形成するように融着されている構成とし、ま
た、本発明の製造方法は、袋の前側および後ろ側を構成
する対向する一対の平面部と、折り襞状に内方に折り込
まれた折り線を備えるように形成された２つの側面を有
する筒状の袋本体部と、この袋本体部の一方の口部を封
止する底部形成シートとを備える自立型の袋体の製造方
法であって、袋の前側および後ろ側を構成する対向する
一対の平面部と折り襞状に内方に折り込まれた折り線を
備えるように形成された２つの側面とからなり、両端が
開口した筒状の袋本体部を形成する袋本体形成工程と、
袋本体部の一方の口部において、対向する前記折り線の
それぞれ任意の一点を基点とし、該基点から袋本体部の
一端までの折り線を袋本体部の側面側に折り返して四角
形状の底部開き面を形成する工程と、該底部開き面に対
応する平板な四角形状の底部形成シートを該底部開き面
に重ねる工程と、該底部開き面の周縁と平板な底部形成
シートの周縁とを熱融着することにより袋本体部の一方
の口部と底部形成シートとを四方シールする工程とを含
む構成とした。In order to solve the above-mentioned problems, the self-supporting bag of the present invention is folded inward in a fold-like manner with a pair of opposed flat portions forming the front side and the back side of the bag. A self-standing bag comprising: a tubular bag body having two side surfaces formed so as to have a fold line; and a bottom forming sheet for sealing one opening of the bag body, the bag body The part is a quadrangular shape in which the fold line from the base point to one end of the bag body part is folded back to the side surface side of the bag body part, with an arbitrary point of each of the facing fold lines being a base point in the one mouth part. And a flat rectangular bottom forming sheet having a bottom opening surface on which is fused so as to form a heat-sealed portion on the peripheral edge thereof. The method consists of a pair of opposed flats that form the front and back of the bag. Portion, a tubular bag main body having two side surfaces formed so as to have a fold line folded inward in a fold shape, and a bottom portion sealing one mouth of the bag main body A method for manufacturing a self-supporting bag body comprising a sheet, wherein the bag is formed so as to have a pair of flat surface portions facing each other forming a front side and a back side of the bag and a folding line folded inward in a fold shape. A bag main body forming step of forming a tubular bag main body having two open side surfaces and having open both ends;
At one mouth of the bag body, each of the opposing fold lines is set as a base point, and the fold line from the base point to one end of the bag body is folded back to the side surface side of the bag body to form a rectangular bottom. A step of forming an opening surface, a step of superimposing a flat rectangular bottom forming sheet corresponding to the bottom opening surface on the bottom opening surface, and heating the peripheral edge of the bottom opening surface and the peripheral edge of the flat bottom forming sheet. The method includes a step of sealing one side of the bag body and the bottom forming sheet in four directions by fusion.
【０００７】本発明の自立袋は、筒状の袋本体部と、こ
の袋本体部の一方の口部を封止する底部形成シートとを
備え、袋本体部は一方の口部において、対向する折り線
のそれぞれ任意の一点を基点とし、該基点から袋本体部
の一端までの折り線が袋本体部の側面側に折り返されて
なる四角形状の底部開き面を有し、該底部開き面の上に
平板な四角形状の底部形成シートが、その周縁に熱シー
ル部を形成するように融着されて構成されているので、
袋本体と底材との折り込み部が存在しない。したがっ
て、本発明の自立袋においては、袋本体と底材との折り
込み部の交点にピンホールやしわが発生し易く、そこか
ら漏れを生ずる可能性があるという従来の自立袋に見ら
れた問題がない。The self-supporting bag of the present invention comprises a tubular bag body and a bottom forming sheet for sealing one mouth of the bag body, and the bag body is opposed at one mouth. Each fold line has an arbitrary point as a base point, and the fold line from the base point to one end of the bag body section has a rectangular bottom opening surface that is folded back to the side surface side of the bag body section. Since the flat bottom rectangular sheet for forming the bottom portion is formed by fusing so as to form the heat seal portion on the periphery thereof,
There is no folded part between the bag body and the bottom material. Therefore, in the self-supporting bag of the present invention, there is a problem found in the conventional self-supporting bag that pinholes and wrinkles are likely to occur at the intersections of the folded portions of the bag body and the bottom material, and leakage may occur from there. There is no.
【０００８】また、本発明の自立袋の製造方法では、袋
の前側および後ろ側を構成する対向する一対の平面部と
折り襞状に内方に折り込まれた折り線を備えるように形
成された２つの側面とからなり、両端が開口した筒状の
袋本体部を形成する袋本体形成工程と、袋本体部の一方
の口部において、対向する前記折り線のそれぞれ任意の
一点を基点とし、該基点から袋本体部の一端までの折り
線を袋本体部の側面側に折り返して四角形状の底部開き
面を形成する工程と、該底部開き面に対応する平板な四
角形状の底部形成シートを該底部開き面に重ねる工程
と、該底部開き面の周縁と平板な底部形成シートの周縁
とを熱融着することにより袋本体部の一方の端部と底部
形成シートとを四方シールする工程とを含むように構成
されていることから、底部形成シートを袋本体部の口部
の折り込み部に合わせて折り込む必要がない。そのた
め、本発明の製造方法では、袋本体部と底材との折り込
み部の交点が存在せず、したがってそのような交点にお
いてピンホールやしわが発生し易く、場合によってはそ
こから漏れを生ずることがあるという問題がなく、しか
も耐衝撃性および自立性に優れた自立袋を効率良く製造
可能である。Further, in the method for producing a self-supporting bag of the present invention, it is formed so as to have a pair of opposed flat portions forming the front side and the back side of the bag and a folding line folded inward in a fold shape. A bag body forming step of forming a tubular bag body portion having two side surfaces and having both ends opened, and, in one mouth portion of the bag body portion, an arbitrary one point of each of the facing folding lines is used as a base point, A step of folding back a folding line from the base point to one end of the bag body to the side surface side of the bag body to form a rectangular bottom opening surface; and a flat rectangular bottom forming sheet corresponding to the bottom opening surface. A step of superimposing on the bottom opening surface, and a step of sealing one end of the bag body part and the bottom forming sheet on all sides by heat-sealing the peripheral edge of the bottom opening surface and the peripheral edge of the flat bottom forming sheet. Because it is configured to include There is no need to folded bottom forming sheet in accordance with the folded portion of the mouth portion of the bag body portion. Therefore, in the manufacturing method of the present invention, there is no intersection of the folded portion between the bag body and the bottom material, and therefore pinholes and wrinkles are likely to occur at such intersections, and in some cases leakage may occur. It is possible to efficiently manufacture a self-supporting bag having no impact and having excellent impact resistance and self-supporting property.
【０００９】[0009]
【発明の実施の形態】次に本発明の実施の形態につい
て、図面を参照しながら具体的に説明する。図１に示す
ように、この実施の形態では、先ず、袋の前側と後ろ側
を構成する対向する一対の平面部１１，１１と、袋の内
方に折り襞状に折り込まれた折り線２３，２３を備える
ように形成された２つの側面２１，２１を有し、両端が
開口した筒状の袋本体部１０を用意する。この筒状の袋
本体部１０は、通常、同一材質の包材を用いて、貼り合
わせで形成してもよいし、また、いわゆる合掌貼り法に
より形成してもよい。BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be specifically described with reference to the drawings. As shown in FIG. 1, in this embodiment, first, a pair of opposing flat surface portions 11 and 11 that form the front side and the back side of the bag, and a folding line 23 folded inward in the bag in a fold shape. , 23 having two side surfaces 21 and 21 formed so as to include the cylindrical bag body 10 having both ends opened. The tubular bag main body 10 may be formed by pasting or using a packaging material made of the same material, or may be formed by a so-called joint sticking method.
【００１０】このようにして形成される袋本体部１０に
おいては、折り線２３，２３により２つの側面２１，２
１に折り込み角度θ１が形成されるが、本実施例では、
この折り込み角度θ１は１８０度以内に保たれている。
しかしながら、場合によっては２つの側面２１，２１を
完全に開ききることも可能である。In the bag body portion 10 thus formed, the two side surfaces 21 and 2 are formed by the folding lines 23 and 23.
1, the folding angle θ1 is formed, but in the present embodiment,
This folding angle θ1 is kept within 180 degrees.
However, in some cases it is possible to open the two side faces 21, 21 completely.
【００１１】次いで、図２に示すように、袋本体部１０
の一方の口部において、２つの側面２１，２１のそれぞ
れの折り線２３における任意かつ互いに対向するそれぞ
れの点Ｐ，Ｐ´を基点とし、この点Ｐ，Ｐ´からそれぞ
れの折り線２３，２３の一方の端部までの折り線２３，
２３をそれぞれ側面２１，２１の外側に折り返し、袋本
体部１０の一方の口部を押し拡げることにより図３に示
すような四角形状の底部開き面２５を形成する。Next, as shown in FIG. 2, the bag body 10
In one of the mouths, the points P and P'arbitrary and opposite to each other on the respective folding lines 23 of the two side surfaces 21 and 21 are set as base points, and the folding lines 23 and 23 from the points P and P ' Fold line 23 to one end of
23 are folded back to the outside of the side surfaces 21 and 21, respectively, and one opening of the bag body 10 is expanded to form a rectangular bottom opening surface 25 as shown in FIG.
【００１２】一方、図３に示すように、四角形状の平板
な底部形成シート３０を用意し、この底部形成シート３
０と、上述の底部開き面２５とを重ね合わせる。このよ
うにして重ね合わせた状態の底部形成シート３０と底部
開き面２５との周囲がいわゆる四方シールされるように
熱板を押し当て、図４に示すように、袋本体部１０の口
部の周縁と底部形成シート３０とを熱融着（ヒートシー
ル）する。なお、図４中、ヒートシール部を斜線で示
す。この熱融着は、通常、袋本体部１０のサイドヒート
シールにより行われる。On the other hand, as shown in FIG. 3, a square flat bottom forming sheet 30 is prepared, and the bottom forming sheet 3 is prepared.
0 and the above-mentioned bottom opening surface 25 are overlapped. In this way, the hot plate is pressed so that the periphery of the bottom forming sheet 30 and the bottom opening surface 25 in the superposed state is so-called four-sided sealed, and as shown in FIG. The peripheral edge and the bottom forming sheet 30 are heat-sealed. In addition, in FIG. 4, the heat-sealed portion is indicated by diagonal lines. This heat fusion is usually performed by side heat sealing of the bag body 10.
【００１３】このようにして製造された自立袋を反転
し、内部を広げて自立させた状態が図５に示される。こ
の自立袋に内容物を収納するには、通常、開放状態にあ
る袋の開口部から内容物を充填し、その後、この開口部
を熱融着したり、あるいは注出部材を取り付けたりす
る。また、開口部は必要に応じてそのままにしておいて
もよく、熱融着あるいは注出部材の取り付けを省いて図
５に示されるままの単なる袋として用いてもよい。さら
にまた、両端の開口部に底部開き面２５を形成し、各底
部開き面２５に平板な四角形状の底部形成シートを熱融
着して四方シールするとともに例えばいずれか一方の平
面部１１に注出口を設け、この注出口に適当な注出具を
取り付けることにより折り畳み可能なバッグインボック
ス用袋体とすることも可能である。FIG. 5 shows a state in which the self-supporting bag manufactured in this way is inverted and the inside is expanded to make it self-supporting. To store the contents in the self-standing bag, the contents are usually filled from the opening of the bag in the open state, and then the opening is heat-sealed or a pouring member is attached. Further, the opening may be left as it is, or it may be used as a mere bag as shown in FIG. 5 by omitting the heat fusion or the attachment of the pouring member. Furthermore, bottom opening surfaces 25 are formed in the openings at both ends, and a flat rectangular bottom forming sheet is heat-sealed on each of the bottom opening surfaces 25 for four-way sealing and, for example, poured into one of the flat surface portions 11. It is also possible to provide a foldable bag-in-box bag by providing an outlet and attaching an appropriate pouring tool to the pouring outlet.
【００１４】なお、図１に示されるような筒状の袋本体
部１０は、図６に示すように平面部シート４１，４１
と、折り襞状に内方に折り込まれた折り線５３，５３を
備えるように形成された２つの側面シート６１，６１と
を互いに対向するように貼り合わせて形成してもよい。
その場合には、例えば、平面部シート４１と側面シート
６１との材質を適宜に変えることもできる。The tubular bag body 10 as shown in FIG. 1 has flat sheet 41, 41 as shown in FIG.
Alternatively, the two side sheets 61, 61 formed so as to include the folding lines 53, 53 folded inward in a fold shape may be formed by adhering them so as to face each other.
In that case, for example, the materials of the flat sheet 41 and the side sheet 61 can be appropriately changed.
【００１５】以上のようにして製造される自立袋は、筒
状の袋本体部１０の少なくとも一方の口部に底部開き面
２５を形成し、この底部開き面２５に平板な底部形成シ
ート３０を重ね合わせて両者が周縁で四方シールされる
ように熱融着されているので、底部形成シート３０に折
り返し部が存在せず、したがって袋本体部１０と底部形
成シート３０との折り返し部の交点が生じないことか
ら、そのような交点にピンホールやしわが発生し、とき
にはその部分から漏れを生じることがあるという問題が
ない。しかも、従来の袋のように応力集中部が生じるこ
とがなく、落下等における耐衝撃性に優れ、また自立性
にも優れている。In the self-standing bag manufactured as described above, the bottom opening surface 25 is formed on at least one mouth of the tubular bag body 10, and the flat bottom forming sheet 30 is formed on the bottom opening surface 25. Since they are superposed and heat-sealed so that they are sealed in all directions at the periphery, there is no folded portion in the bottom forming sheet 30, and therefore the intersection of the folded portion between the bag body 10 and the bottom forming sheet 30 is Since it does not occur, there is no problem that a pinhole or a wrinkle is generated at such an intersection, and sometimes a leak may occur from that portion. Moreover, unlike the conventional bag, no stress-concentrated portion is generated, and it is excellent in impact resistance against dropping and the like and is also excellent in self-supporting property.
【００１６】[0016]
【発明の効果】以上に詳述したように、本発明の自立袋
は、平板な底部形成シートが筒状の袋本体部の少なくと
も一方の口部に熱融着されてなる構成としたので、本発
明の自立袋では、底部形成シートと袋本体部との折り返
し部の交点が存在せず、したがって、そのような交点が
存在する場合に生ずるピンホールやしわ、さらには漏れ
の問題がない。しかも、この自立袋は、応力集中部が生
じることがなくて落下等における耐衝撃性に優れ、また
自立性にも優れている。As described in detail above, the self-supporting bag of the present invention has a flat bottom forming sheet heat-sealed to at least one mouth of the tubular bag body. In the self-supporting bag of the present invention, there is no intersection of the folded portion between the bottom forming sheet and the bag body, and therefore, there is no problem of pinholes, wrinkles, and leakage that occur when such an intersection exists. Moreover, this self-supporting bag has no stress concentration portion, is excellent in impact resistance when dropped, and is also excellent in self-supporting property.
【００１７】一方、本発明の自立袋の製造方法は、筒状
の袋本体部の少なくとも一方の口部において、両側面の
各折り線における任意の点を基点として各折り線をそれ
ぞれ外側に折り返すことにより四角形状の底部開き面を
形成し、この底部開き面に四角形状の平板な底部形成シ
ートを重ね、底部開き面と底部形成シートとを重ね合わ
せたままの状態で両者が四方シールされるように両者の
周縁を熱融着するように構成したので、本発明の方法に
よれば、底部形成シートと袋本体部との折り返し部の交
点を生じさせることがなく、したがって、そのような交
点に発生するピンホールやしわ、さらにはそれらに起因
する漏れの問題がなく、しかも耐衝撃性および自立性に
優れた自立袋を効率良く製造することができる。On the other hand, according to the method for producing a self-supporting bag of the present invention, at least one mouth portion of the tubular bag body portion is folded back to the outside with an arbitrary point on each folding line on both sides as a base point. To form a quadrangular bottom opening surface, a rectangular flat bottom forming sheet is overlapped on the bottom opening surface, and both sides are sealed in a state where the bottom opening surface and the bottom forming sheet are overlapped. As described above, since the peripheral edges of the both are heat-sealed, the method of the present invention does not cause the intersection of the folded portion of the bottom forming sheet and the bag body, and therefore, such an intersection. It is possible to efficiently manufacture a self-supporting bag having no pinholes and wrinkles generated in the above, and no problem of leakage due to those, and having excellent impact resistance and self-supporting property.
【図１】本発明の自立袋を構成する袋本体部の一例を示
す説明図である。FIG. 1 is an explanatory view showing an example of a bag body portion that constitutes a self-standing bag of the present invention.
【図２】本発明の自立袋における一方の口部を示す説明
図である。FIG. 2 is an explanatory view showing one mouth portion of the self-standing bag of the present invention.
【図３】本発明の自立袋における袋本体部に形成された
底部開き面と底部形成シートとの関係を示す説明図であ
る。FIG. 3 is an explanatory view showing a relationship between a bottom opening surface formed on a bag body of the self-standing bag of the present invention and a bottom forming sheet.
【図４】本発明の自立袋における袋本体部の底部開き面
に底材形成シートを熱融着した状態を示す説明図であ
る。FIG. 4 is an explanatory view showing a state in which a bottom material forming sheet is heat-sealed to the bottom opening surface of the bag body of the self-standing bag of the present invention.
【図５】本発明の自立袋の一例を示す説明図である。FIG. 5 is an explanatory view showing an example of the self-standing bag of the present invention.
【図６】本発明の自立袋における袋本体部の一例を示す
説明図である。FIG. 6 is an explanatory view showing an example of a bag body portion of the self-standing bag of the present invention.
【図７】従来の自立袋の一例を示す概略斜視図である。FIG. 7 is a schematic perspective view showing an example of a conventional self-standing bag.
１０…袋本体部 １１…平面部 ２１…側面 ２２…側面部 ２３…折り線 ２５…底部開き面 ３０…底部形成シート DESCRIPTION OF SYMBOLS 10 ... Bag main body 11 ... Flat surface 21 ... Side surface 22 ... Side surface 23 ... Folding line 25 ... Bottom opening surface 30 ... Bottom forming sheet
Claims (2)
る一対の平面部と、折り襞状に内方に折り込まれた折り
線を備えるように形成された２つの側面を有する筒状の
袋本体部と、 この袋本体部の一方の口部を封止する底部形成シートと
を備える自立袋であって、 前記袋本体部は、前記一方の口部において、対向する前
記折り線のそれぞれ任意の一点を基点とし、該基点から
袋本体部の一端までの折り線が袋本体部の側面側に折り
返されてなる四角形状の底部開き面を有し、該底部開き
面の上に平板な四角形状の底部形成シートが、その周縁
に熱シール部を形成するように融着されていることを特
徴とする自立袋。1. A tubular bag having a pair of opposed flat surfaces forming the front side and the back side of the bag and two side surfaces formed so as to have a fold line folded inward in a fold shape. A self-standing bag comprising a main body and a bottom forming sheet that seals one opening of the bag main body, wherein the bag main body has an optional folding line in each of the one opening. Has a quadrilateral bottom opening face formed by folding back the one side to the one end of the bag main body from the base point to the side surface side of the bag main body, and a flat square on the bottom opening face. A self-standing bag in which a shaped bottom forming sheet is fused so as to form a heat-sealed portion on the periphery thereof.
る一対の平面部と、折り襞状に内方に折り込まれた折り
線を備えるように形成された２つの側面を有する筒状の
袋本体部と、この袋本体部の一方の口部を封止する底部
形成シートとを備える自立型の袋体の製造方法であっ
て、 袋の前側および後ろ側を構成する対向する一対の平面部
と折り襞状に内方に折り込まれた折り線を備えるように
形成された２つの側面とからなり、両端が開口した筒状
の袋本体部を形成する袋本体形成工程と、 袋本体部の一方の口部において、対向する前記折り線の
それぞれ任意の一点を基点とし、該基点から袋本体部の
一端までの折り線を袋本体部の側面側に折り返して四角
形状の底部開き面を形成する工程と、 該底部開き面に対応する平板な四角形状の底部形成シー
トを該底部開き面に重ねる工程と、 該底部開き面の周縁と平板な底部形成シートの周縁とを
熱融着することにより袋本体部の一方の口部と底部形成
シートとを四方シールする工程とを含むことを特徴とす
る自立袋の製造方法。2. A tubular bag having a pair of opposed flat surfaces forming the front side and the back side of the bag and two side surfaces formed so as to have folding lines folded inward in a fold shape. A method of manufacturing a self-standing bag body comprising a main body and a bottom forming sheet that seals one opening of the bag main body, wherein a pair of opposed flat parts forming the front side and the back side of the bag are provided. And a bag body forming step of forming a tubular bag body portion having two side surfaces formed so as to be provided with folding lines folded inward in a fold-like shape, and a bag body forming step, In one of the mouths, an arbitrary one of the facing folding lines is used as a base point, and the folding line from the base point to one end of the bag body is folded back to the side surface side of the bag body to form a rectangular bottom opening surface. And a flat rectangular bottom portion corresponding to the bottom opening surface A step of stacking a forming sheet on the bottom opening surface, and heat sealing the peripheral edge of the bottom opening surface and the peripheral edge of the flat bottom forming sheet to seal one side of the bag body and the bottom forming sheet from each other. The manufacturing method of the self-supporting bag characterized by including the process of performing.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02560396A JP3587406B2 (en) | 1996-02-13 | 1996-02-13 | Self-standing bag and manufacturing method thereof |
| GB9701771A GB2310194B (en) | 1996-02-13 | 1997-01-29 | Bag and method for manufacturing same |
| GB9719654A GB2317159B (en) | 1996-02-13 | 1997-01-29 | Bag and method for manufacturing same |
| AU12608/97A AU718756B2 (en) | 1996-02-13 | 1997-02-10 | Bag and method for manufacturing same |
| FR9701551A FR2744699B1 (en) | 1996-02-13 | 1997-02-11 | BAG AND METHOD FOR MANUFACTURING SUCH A BAG |
| IT97RM000070A IT1290923B1 (en) | 1996-02-13 | 1997-02-11 | BAG AND METHOD FOR THE PRODUCTION OF THE SAME. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02560396A JP3587406B2 (en) | 1996-02-13 | 1996-02-13 | Self-standing bag and manufacturing method thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001369280A Division JP3716206B2 (en) | 2001-12-03 | 2001-12-03 | Manufacturing method of free-standing bags |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09216638A true JPH09216638A (en) | 1997-08-19 |
| JP3587406B2 JP3587406B2 (en) | 2004-11-10 |
Family
ID=12170492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02560396A Expired - Lifetime JP3587406B2 (en) | 1996-02-13 | 1996-02-13 | Self-standing bag and manufacturing method thereof |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3587406B2 (en) |
| AU (1) | AU718756B2 (en) |
| FR (1) | FR2744699B1 (en) |
| GB (1) | GB2310194B (en) |
| IT (1) | IT1290923B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000334861A (en) * | 1999-05-26 | 2000-12-05 | Sanwa Kogyo Kk | Method for continuously manufacturing self-supporting bag |
| CN100387423C (en) * | 2002-04-26 | 2008-05-14 | 户谷技研工业株式会社 | Plastic bag producing device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2781718B1 (en) * | 1998-07-28 | 2000-10-13 | Flexico France Sarl | PROCESS FOR MANUFACTURING FLAT BAGS AND MACHINE FOR IMPLEMENTING SAME |
| DE19910264A1 (en) * | 1999-03-08 | 2000-09-14 | Reinhold Klaus Masch & Geraete | Method for producing a packaging material from plastic film or the like weldable material |
| EP1106339B1 (en) * | 1999-12-02 | 2006-09-27 | Totani Corporation | Plastic bag making apparatus |
| ITMI20020291A1 (en) * | 2002-02-14 | 2003-08-14 | Elba Spa | METHOD OF MANUFACTURE OF A FLAT BOTTOM BAG AND SO BAG |
| DE102005050911A1 (en) * | 2005-10-21 | 2007-04-26 | Lemo Maschinenbau Gmbh | Stand-up pouches |
| US20110019942A1 (en) | 2009-07-22 | 2011-01-27 | Carmelo Piraneo | Flat Bottom, Stand-Up Bag and Method of Manufacturing Same |
| DE102012106577A1 (en) * | 2012-07-20 | 2014-01-23 | Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg | Bag packaging for packing granular and powdery filling material, has bottom side end portions that are fixed by gluing to form rectangular bottom |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3195801A (en) * | 1961-06-08 | 1965-07-20 | St Regis Cons Packaging Ltd | Block bottom bag |
| DE1611680A1 (en) * | 1967-08-03 | 1971-01-14 | Roti Gmbh Anilindruck U Papier | Pleated bag and method of making the same |
| GB1293066A (en) * | 1969-07-08 | 1972-10-18 | Windmoeller & Hoelscher | Cross bottom or block bottom bags or sacks and methods for the manufacture thereof |
| DE2536580A1 (en) * | 1975-08-16 | 1977-02-24 | Hlavaty Dieter Juergen | Side fold bag with square base - provides rigid stand either full or empty with sidewalls and base made from single section |
| GB2288566B (en) * | 1992-01-10 | 1996-07-31 | Hosokawa Yoko Kk | Zippered bags and method of forming the same |
| US5275491A (en) * | 1992-01-10 | 1994-01-04 | Kabushiki Kaisha Hosokawa Yoko | Zippered bags and method of forming the same |
-
1996
- 1996-02-13 JP JP02560396A patent/JP3587406B2/en not_active Expired - Lifetime
-
1997
- 1997-01-29 GB GB9701771A patent/GB2310194B/en not_active Expired - Fee Related
- 1997-02-10 AU AU12608/97A patent/AU718756B2/en not_active Ceased
- 1997-02-11 FR FR9701551A patent/FR2744699B1/en not_active Expired - Fee Related
- 1997-02-11 IT IT97RM000070A patent/IT1290923B1/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000334861A (en) * | 1999-05-26 | 2000-12-05 | Sanwa Kogyo Kk | Method for continuously manufacturing self-supporting bag |
| CN100387423C (en) * | 2002-04-26 | 2008-05-14 | 户谷技研工业株式会社 | Plastic bag producing device |
Also Published As
| Publication number | Publication date |
|---|---|
| AU718756B2 (en) | 2000-04-20 |
| FR2744699B1 (en) | 1999-06-04 |
| FR2744699A1 (en) | 1997-08-14 |
| IT1290923B1 (en) | 1998-12-14 |
| JP3587406B2 (en) | 2004-11-10 |
| GB9701771D0 (en) | 1997-03-19 |
| GB2310194A (en) | 1997-08-20 |
| AU1260897A (en) | 1997-08-21 |
| GB2310194B (en) | 1999-09-01 |
| ITRM970070A1 (en) | 1998-08-11 |
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