JP3390737B2 - Connection structure and connection method of laminated film - Google Patents
Connection structure and connection method of laminated filmInfo
- Publication number
- JP3390737B2 JP3390737B2 JP2000285690A JP2000285690A JP3390737B2 JP 3390737 B2 JP3390737 B2 JP 3390737B2 JP 2000285690 A JP2000285690 A JP 2000285690A JP 2000285690 A JP2000285690 A JP 2000285690A JP 3390737 B2 JP3390737 B2 JP 3390737B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- laminated
- laminated film
- fusion
- base film
- 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
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、積層フィルム、多
くは包装用として用いられる積層フィルムにおいて、た
とえば一の積層フィルムの後端部分と、他の積層フィル
ムの先端部分とを、粘着テープその他の連結用資材を使
用することなく連結するための連結構造および連結の方
法に関するものである。とくに、本発明は、積層フィル
ム相互の連結部分にもまた、他の部分と同様の、液密も
しくは気密なヒートシールを施すことを可能にする技術
を提案する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated film, which is often used for packaging, in which, for example, a rear end portion of one laminated film and a leading end portion of another laminated film are adhered to each other with an adhesive tape or the like. The present invention relates to a connecting structure and a connecting method for connecting without using a connecting material. In particular, the present invention proposes a technique that makes it possible to apply a liquid-tight or air-tight heat seal to the connecting portions of the laminated films, similarly to the other portions.
【０００２】[0002]
【従来の技術】たとえば、液状体、粉状体その他を連続
充填包装するときや、間欠充填包装するときに使用され
る積層フィルム、即ち被包装物を充填した包装袋の製造
に供される包装用積層フィルムは、一般に、印刷工程、
ラミネート工程およびスリッター工程を経て、ロール状
に巻回された状態で包装装置に適用される。2. Description of the Related Art For example, a package used for producing a packaging bag filled with a laminated film, that is, a packaging bag used for continuous filling and packaging of liquids, powders and the like, and for intermittent filling packaging. Laminated films for printing are generally
It is applied to a packaging device in a state of being wound into a roll through a laminating process and a slitter process.
【０００３】この場合、スリッター工程では、主とし
て、ラミネートを終えた積層フィルムの幅寸法を一定の
値とするための、フィルム側部の切断除去を行う他、ロ
ール状巻回フィルムの長さの調整を行う。すなわち、こ
の工程で、積層フィルムの巻回長さを、1000m 、2000m
等の所定長さにするためには、積層フィルムの端部分を
相互連結するとともに、印刷不良部分、ラミネート不良
部分等を切断除去した後のフィルム繋ぎを行うことが必
要であり、これがため、たとえば、2000m 巻きのロール
状巻回フィルム中に、多いときには、２〜３個所程度の
フィルム連結部が存在することになる。In this case, in the slitter process, mainly, the side portions of the film are cut and removed so that the width dimension of the laminated film which has been laminated is kept constant, and the length of the roll-shaped wound film is adjusted. I do. That is, in this step, the winding length of the laminated film is 1000 m, 2000 m
In order to obtain a predetermined length such as, it is necessary to interconnect the end portions of the laminated film, and to perform film joining after cutting and removing defective printing portions, defective lamination portions, etc. In a 2000 m roll of rolled film, when there are many, there are about 2 to 3 film connecting portions.
【０００４】ところで、ベースフィルム層およびシーラ
ント層を具える積層フィルムの従来の連結は、一の積層
フィルムの後端と、他の積層フィルムの先端との突き合
わせ姿勢で、それらの両フィルムの少なくともベースフ
ィルム面に粘着テープ等を貼着することにより、両ベー
スフィルムを幅方向の全幅にわたって相互接合すること
により行われている。By the way, the conventional connection of a laminated film including a base film layer and a sealant layer is such that at least the base of both of these films is formed by abutting the rear end of one laminated film and the leading end of another laminated film. By adhering an adhesive tape or the like on the film surface, both base films are joined together over the entire width in the width direction.
【０００５】従って、このようなフィルム連結構造で
は、両フィルムの接合部分に、積層フィルムとは異質の
材料からなる粘着テープが存在することになり、それ故
に、たとえば、相互連結した積層フィルムを、その幅方
向で二つ折りにして、それに縦方向および横方向のヒー
トシールを施すに当たり、とくに、粘着テープの存在個
所で、シーラント層を十分に加熱溶融させることが困難
になる。Therefore, in such a film connecting structure, an adhesive tape made of a material different from that of the laminated film is present at the joint portion of both films, and therefore, for example, the interconnected laminated films are When the sheet is folded in two in the width direction and heat-sealed in the machine direction and the transverse direction, it becomes difficult to sufficiently heat and melt the sealant layer, especially at the location where the adhesive tape exists.
【０００６】[0006]
【発明が解決しようとする課題】これがため、スリッタ
ー後のロール状巻回フィルムを包装装置に適用して、た
とえば連続充填包装を行う場合、幅方向に二つ折りした
連結積層フィルムの遊端部分を、一定のクリアランスを
保って回転する一対の回転シール刃としての縦シール刃
間にそのまま通過させても、粘着テープの存在域では、
シーラント層の相互を十分に融着させることができず、
シール不良の発生が余儀なくされるため、充填被包装物
がそのシール不良部分から飛散等することになるという
問題があった。Therefore, when the roll-shaped rolled film after slitting is applied to a packaging device and, for example, continuous filling packaging is performed, the free end portion of the connection laminated film folded in two in the width direction is removed. , Even if it is passed as it is between the vertical seal blades as a pair of rotary seal blades that rotate with a certain clearance, in the presence area of the adhesive tape,
The sealant layers cannot be sufficiently fused to each other,
Since a defective seal is inevitably generated, there is a problem that the filled object to be packaged is scattered from the defective seal portion.
【０００７】かくして、従来のフィルム連結構造はその
ままに、充填被包装物の不測の飛散等を防止するために
は、フィルム繋ぎ部が巻回フィルムから繰出される度
に、包装装置全体の、または、ヒートシール機能部およ
び充填機能部等の主要部分の一時停止を行って、その繋
ぎ部を装置の主要部分に通過させた後に充填包装を再開
することが不可避であり、しかも、その再開に当って
は、包装袋内の被包装物の量の確認、ヒートシール位置
およびシール状態の確認、包装袋の切断位置および引裂
きノッチの形成位置の確認等を行い、これらの全てを許
容範囲内に納めてはじめて、装置の本格的な再稼動が可
能であった。Thus, in order to prevent the unexpected scattering of the filled articles while keeping the conventional film connection structure, the whole of the packaging device, or It is unavoidable to suspend the main parts such as the heat-sealing function part and the filling function part and to restart the filling and packaging after passing the connecting part to the main part of the device. Check the amount of items to be packed in the packaging bag, check the heat-sealing position and sealing condition, check the cutting position of the packaging bag and the position where the tear notch is formed, and make sure that all of these are within the allowable range. Only then could a full-scale restart of the device be possible.
【０００８】従って、この場合には、装置または主要機
能部分の一時停止から装置の再稼動に至るまでに多くの
時間および作業工数を必要とするという、作業能率およ
び効率上の大きな問題があった他、こうした各種の確認
のために、相当量の積層フィルムおよび被包装物の消費
が余儀なくされて、材料歩留りが低下するという問題も
あった。Therefore, in this case, there is a big problem in work efficiency and efficiency that much time and work man-hours are required from the temporary stop of the device or the main functional portion to the restart of the device. In addition, due to such various confirmations, there is a problem that a considerable amount of the laminated film and the object to be packaged are inevitably consumed, and the material yield is reduced.
【０００９】そこで、本発明は、積層フィルムの相互連
結に当たり、粘着テープ等の連結資材を使用することな
く、フィルム繋ぎ部に十分な接合強度を付与し、しか
も、その繋ぎ部をもまた、他の積層フィルム部分と同様
に、包装袋の製袋に十分に寄与させることで、積層フィ
ルムの繋ぎ部が包装装置を通過するに際しての包装装置
の定常運転の変更、いいかえれば、その装置の主要機能
部分等の一時停止を全く不要として、作業能率および効
率を高めるとともに、材料歩留りを大きく向上させるこ
とができる積層フィルムの連結構造および方法を提供す
ることを目的とする。Therefore, in the present invention, when interconnecting laminated films, a sufficient joining strength is imparted to the film connecting portion without using a connecting material such as an adhesive tape, and the connecting portion can also be connected to other portions. Similar to the laminated film part of the above, by making a sufficient contribution to the bag making of the packaging bag, the change of the steady operation of the packaging device when the connection part of the laminated film passes through the packaging device, in other words, the main function of the device. An object of the present invention is to provide a laminated film connection structure and method capable of improving work efficiency and efficiency and greatly improving material yield by eliminating the need for temporary suspension of parts and the like.
【００１０】[0010]
【課題を解決するための手段】本発明に係る積層フィル
ムの連結構造は、熱可塑性の延伸ベースフィルム層、た
とえば、二軸延伸ナイロンフィルム層、二軸延伸ポリエ
ステルフィルム層、二軸延伸ポリプロピレンフィルム
層、二軸延伸エチレン・ビニルアルコール共重合物フィ
ルム層等と、シーラント層、たとえば、各種ポリエチレ
ン層、エチレン・酢酸ビニル共重合体層、無延伸ポリプ
ロピレン、エチレン・アクリル酸共重合体層、アイオノ
マー層等とを具える積層フィルムそれぞれの、後端部分
と先端部分とを相互に連結する構造であって、延伸ベー
スフィルム層どうしを合掌状に融着接合し、この融着接
合部の、他のフィルム部分からの突出量を50〜800μmと
したものである。The laminated film connection structure according to the present invention comprises a thermoplastic stretched base film layer, for example, a biaxially stretched nylon film layer, a biaxially stretched polyester film layer, a biaxially stretched polypropylene film layer. , Biaxially stretched ethylene / vinyl alcohol copolymer film layers and the like, and sealant layers such as various polyethylene layers, ethylene / vinyl acetate copolymer layers, non-stretched polypropylene, ethylene / acrylic acid copolymer layers, ionomer layers, etc. Each of the laminated film comprising, and a structure in which the rear end portion and the front end portion are connected to each other, and the stretched base film layers are fusion-bonded to each other in the shape of a palm, and this fusion-bonded portion is another film. the amount of protrusion of the portion is obtained by <br/> with 50~800μ m.
【００１１】また、本発明においては、前記延伸フィル
ム層とシーラント層との間に、各種のフィルム層の他、
アルミニウム箔等の金属箔、紙、各種蒸着層、塩化ビニ
リデン共重合体コート層その他のコーティング層等を介
在させることができる。Further, in the present invention, in addition to various film layers, between the stretched film layer and the sealant layer,
Metal foil such as aluminum foil, paper, various vapor deposition layers, vinylidene chloride copolymer coating layer and other coating layers can be interposed.
【００１２】かかる積層フィルム連結構造は、たとえ
ば、両積層フィルムを、それらの延伸ベースフィルム層
を相互に対向させて重ね合わせた状態で、それらの積層
フィルムを、インパルスシーラをもって、好ましくは加
圧下で溶断したときの切断縁およびその近傍で、両延伸
ベースフィルム層を合掌状に融着接合させることにより
実現することができるなお、この場合において、延伸ベ
ースフィルム層相互の接合部の、他のフィルム部分から
の突出量は50〜800 μｍとすることができる。In such a laminated film connection structure, for example, both laminated films are laminated with their stretched base film layers facing each other, and the laminated films are preferably held under pressure with an impulse sealer. It can be realized by fusion-bonding both stretched base film layers in a palm-like shape at the cutting edge when melted and in the vicinity thereof. In this case, in the joint portion between the stretched base film layers, another film is formed. projection amount from the portion can be 50 to 800 mu m.
【００１３】この接合部は、たとえば、積層フィルムを
被包装物の連続充填包装装置に適用した場合、そのフィ
ルムを幅方向に二つ折りにすることにより、被包装物の
充填スペース側、いいかえれば、製造される包装袋の内
側へ突出する状態で繰出し走行され、積層フィルムの、
折り返し遊端部分に存在してフィルム幅方向に延びるそ
の接合部が、回転駆動される一対の縦シール刃間を通過
するときは、突出接合部の、たとえば後方側積層フィル
ムのシーラント層上への折返しと、そのシーラント層と
それに対向する接合部シーラント層との十分な熱融着と
が行われる。しかも、接合部のこのような熱融着によっ
てなお露出する、接合部の他方側のシーラント層は、積
層フィルムの他方の遊端部分のシーラント層に十分に熱
融着されることになるので、形成される縦ヒートシール
部は、所期した通りの気密性およびヒートシール強度が
確保できるようになる。従って、上記接合部は、包装袋
の製袋に十分に寄与することができる。そして、これら
のことは、延伸ベースフィルム層の接合部が包装袋の横
ヒートシール部に重なり合う場合にもまた同様ある。[0013] For example, when the laminated film is applied to a continuous filling and packaging device for a packaged object, the joining portion is folded in two in the width direction so that the filling space side of the packaged object, in other words, It is fed out in a state of protruding to the inside of the manufactured packaging bag,
When the joint portion existing in the folded back free end portion and extending in the film width direction passes between the pair of vertically driven vertical seal blades, the protruding joint portion, for example, on the sealant layer of the rear side laminated film, is formed. Folding back and sufficient heat fusion between the sealant layer and the joint sealant layer opposite thereto are performed. Moreover, the sealant layer on the other side of the joint, which is still exposed by such heat-sealing of the joint, is sufficiently heat-sealed to the sealant layer on the other free end of the laminated film. The formed vertical heat seal portion can secure the desired airtightness and heat seal strength. Therefore, the above-mentioned joining part can fully contribute to bag making of a packaging bag. And these things are the same also when the junction part of a stretched base film layer overlaps with the transverse heat seal part of a packaging bag.
【００１４】このように、本発明にかかる積層フィルム
の連結構造の下では、フィルムの繋ぎ部が存在してもな
お、包装装置の定常運転を継続することができ、これに
よって製造された、繋ぎ部を含む包装袋をもってして
も、被包装物を適正に包装することができるので、ヒー
トシールの不良もしくは不能、被包装物の飛散、洩出等
のおそれを十分に除去することができる。従って、その
フィルム繋ぎ部が、包装装置のヒートシール刃等に通過
するに当っても、ヒートシール機能部、充填機能部等の
一時停止が全く不要となり、この結果として、作業能率
および効率の向上ならびに、材料歩留りの向上が実現さ
れることになる。そしてこの材料歩留りの向上は、積層
フィルムが印刷柄等を有する場合に、接合部での前後の
柄合わせを行うことで一層顕著なものとなる。As described above, under the laminated film connecting structure according to the present invention, even if the film connecting portion is present, the steady operation of the packaging device can be continued, and the connecting device manufactured by the connecting operation can be continued. Since the object to be packaged can be properly packaged even with the packaging bag including the parts, it is possible to sufficiently eliminate the risk of defective or impossible heat sealing, scattering of the object to be packaged, leakage, and the like. Therefore, even when the film joint passes through the heat-sealing blade of the packaging device, the heat-sealing function part, the filling function part, etc. do not need to be stopped at all, and as a result, work efficiency and efficiency are improved. In addition, an improvement in material yield will be realized. This improvement in material yield becomes more remarkable by performing pattern matching before and after at the joint when the laminated film has a printed pattern or the like.
【００１５】ちなみに、延伸フィルム層を、15μｍ厚み
の二軸延伸ナイロンフィルム層とし、シーラント層を、
50μｍ厚みのポリエチレン層とした積層フィルムにおい
て、２枚の積層フィルムをインパルスシーラを用いて溶
断した場合の、両ナイロンフィルム層の接合強度は、15
mm幅当り約５Ｎであり、これは、ロール状巻回フィルム
を繰出すに際して包装装置内で積層フィルムに作用す
る、100mm 幅当り１〜３Ｎの張力に比してはるかに大き
い値であるので、被包装物の充填包装中に、巻回フィル
ムから繰出された積層フィルムが、ナイロンフィルム層
の接合個所で不測の破断等を生じることはない。By the way, the stretched film layer is a biaxially stretched nylon film layer having a thickness of 15 μm, and the sealant layer is
In a laminated film having a polyethylene layer with a thickness of 50 μm, when two laminated films are fused using an impulse sealer, the bonding strength of both nylon film layers is 15
It is about 5 N per mm width, which is much larger than the tension of 1 to 3 N per 100 mm width which acts on the laminated film in the packaging device when the rolled film is unwound. During the filling and packaging of the packaged object, the laminated film unwound from the wound film does not cause an unexpected breakage or the like at the joining portion of the nylon film layers.
【００１６】以上説明したような積層フィルムの連結構
造において、好ましくは、延伸ベースフィルム層の融着
接合部を積層フィルムの幅方向に対して斜めに延在させ
て設ける。このことは、たとえば、積層フィルムをその
幅方向に二つ折りにして、相互に重なり合う遊端部分に
縦ヒートシールを施すとともに、フィルムの長さ方向に
間隔をおく横ヒートシールを施しつつ、被包装物を充填
包装する場合に、包装袋の前面部分と背面部分との間
で、接合部の延在位置を縦ヒートシール部の延在方向に
ずらすことができるので、それらの両部分間で接合部が
相互に重なって位置する場合に比べて、応力集中等を有
利に防止して包装袋の強度を高めることができる。In the above-described laminated film connection structure, preferably, the fusion-bonded joint portion of the stretched base film layer is provided so as to extend obliquely with respect to the width direction of the laminated film. This means, for example, that the laminated film is folded in two in the width direction and vertical heat sealing is applied to the overlapping free end portions, while horizontal heat sealing is performed at intervals in the length direction of the film, When filling and packaging items, the extension position of the joint can be shifted in the extension direction of the vertical heat seal part between the front part and the back part of the packaging bag, so that the parts are joined together. As compared with the case where the parts are positioned to overlap each other, stress concentration can be advantageously prevented and the strength of the packaging bag can be increased.
【００１７】また好ましくは、延伸ベースフィルム層の
合掌状の融着接合部を一方の積層フィルム側へ折返し
て、相互に対向するシーラント層どうし、すなわち合掌
状融着接合部のシーラント層と、一方の積層フィルムの
シーラント層とを予め接合する。この接合は、両シーラ
ント層をヒートシールして熱融着させることにより行う
ことができる。このような連結構造によれば、上述した
と同一の積層構造の下で、両フィルムの接合強度を、15
mm幅当り約35Ｎまで高めることができるので、フィルム
繋ぎ部に予期しない動荷重が作用することがあっても、
その繋ぎ部でのフィルムの破断等を十分に防止すること
ができる。It is also preferable that the gas- sealed fusion- bonded portion of the stretched base film layer is folded back to one laminated film side so that the sealant layers facing each other, that is, the sealant layer of the gas- sealed fusion- bonded portion and one The sealant layer of the laminated film of 1 is previously bonded. This joining can be performed by heat-sealing both the sealant layers and heat-sealing them. According to such a connection structure, under the same laminated structure as described above, the bonding strength of both films is 15
Since it can be increased to about 35 N per mm width, even if unexpected dynamic load may act on the film joint,
It is possible to sufficiently prevent breakage of the film at the connecting portion.
【００１８】[0018]
【発明の実施の形態】以下に本発明の実施の形態を図面
に示すところに基いて説明する。図１は、本発明の一実
施形態を示す拡大断面図であり、図中１，２は、包装用
のそれぞれの積層フィルムを示す。これらの積層フィル
ム１，２はともに、熱可塑性の樹脂材料からなる延伸ベ
ースフィルム層３，４と、図では延伸ベースフィルム層
３，４に直接的に積層したシーラント層とを具えるもの
であり、ここでは、一方の積層フィルム１の後端部分
と、他方の積層フィルム２の先端部分との繋ぎ合わせ
を、延伸ベースフィルム層３，４を合掌状に接合させる
ことにより行う。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged cross-sectional view showing an embodiment of the present invention, in which 1 and 2 indicate respective laminated films for packaging. Both of these laminated films 1 and 2 include stretched base film layers 3 and 4 made of a thermoplastic resin material, and a sealant layer directly laminated on the stretched base film layers 3 and 4 in the figure. Here, the rear end portion of the one laminated film 1 and the leading end portion of the other laminated film 2 are joined by joining the stretched base film layers 3 and 4 in a palm-like shape.
【００１９】両ベースフィルム層３，４のこのような接
合は、これらの両層間に接着剤を介在させて行うことも
可能であるが、特別の連結用ないしは接合用の資材を用
いることなく、しかも、その接合を十分な強度の下に行
うためには、それらのベースフィルム層３，４を急激に
加熱して、それらのベースフィルム層３，４の熱収縮を
拘束しつつ両者を融着させることによって行うのが好ま
しい。これがためには、前述したように、両積層フィル
ム１，２を、延伸ベースフィルム層３，４を相互に対向
させて重ね合わせた状態で、それらを溶断したときの溶
断縁およびその近傍において両ベースフィルム層３，４
を相互に熱融着させることが好ましい。Such joining of the two base film layers 3 and 4 can be carried out by interposing an adhesive agent between these two layers, but without using a special connecting or joining material, Moreover, in order to perform the bonding with sufficient strength, the base film layers 3 and 4 are rapidly heated to restrain the heat shrinkage of the base film layers 3 and 4 and fuse them together. It is preferable to carry out the above. To do this, as described above, the laminated films 1 and 2 are overlapped with the stretched base film layers 3 and 4 facing each other at the fusing edge at the time of fusing them and in the vicinity thereof. Base film layer 3, 4
It is preferable to heat-bond each other.
【００２０】図２は、このような融着工程を、インパル
スシーラを用いた場合について概念的に例示する断面図
である。これは、両積層フィルム１，２の端部分を、図
２(a) に示すような所定の重ね合わせ姿勢、図では合掌
姿勢でインパルスシーラ７の前方に配置して、そのイン
パルスシーラ７の作動による衝撃電流をもって、積層フ
ィルム１，２を瞬間的に加熱して溶融させ、この溶融と
ほぼ同時に、図２(b)に示すようにプッシャプレート８
を進出させて、クランププレート９ａの予めの作用によ
る両フィルム１，２の挟持下で、それらのフィルム１，
２の撓み変形を強制することで、両フィルム１，２を、
融着部の上縁で溶断させるとともに、その溶断縁部をイ
ンパルスシーラ７から離隔させて冷却硬化させること
で、相互に対向して位置する延伸フィルム層３，４を融
着し接合させるものである。なお、図中９ｂは、二枚の
積層フィルム１，２を、インパルスシーラ７の全面に押
圧するクランパを示す。FIG. 2 is a sectional view conceptually illustrating such a fusion bonding step in the case where an impulse sealer is used. This is because the end portions of the two laminated films 1 and 2 are arranged in front of the impulse sealer 7 in a predetermined overlapping posture as shown in FIG. The laminated films 1 and 2 are instantaneously heated and melted by the impact current generated by the pusher plate 8 as shown in FIG.
Of the films 1 and 2 by sandwiching the films 1 and 2 by the pre-action of the clamp plate 9a.
By forcing the bending deformation of 2, both films 1 and 2,
By fusing at the upper edge of the fusion-bonded part, and separating the fusing edge part from the impulse sealer 7 and cooling and hardening, the stretched film layers 3 and 4 located opposite to each other are fused and bonded. is there. In the figure, 9b indicates a clamper that presses the two laminated films 1 and 2 against the entire surface of the impulse sealer 7.
【００２１】このようにして構成される、延伸フィルム
層３，４の合掌状の融着接合部10は、前述したように、
包装装置内で積層フィルム１，２に作用する張力に比し
て十分大きな接合強度を有し、また、被包装物の連続充
填包装装置の縦シール刃間にそのまま通過させ得ること
はもちろん、その通過によって、包装袋に要求される気
密性およびヒートシール強度を十分に発揮することがで
きる。The gas-sealing fusion-bonded portion 10 of the stretched film layers 3 and 4 configured as described above is, as described above,
It has a sufficiently large bonding strength as compared with the tension acting on the laminated films 1 and 2 in the packaging device, and of course, it can be passed as it is between the vertical seal blades of the continuous filling and packaging device for the object to be packaged. By passing, the airtightness and heat seal strength required for the packaging bag can be sufficiently exhibited.
【００２２】ところで、以上のような融着接合部10は、
図３(a) に示すように、積層フィルム１，２の幅方向Ｙ
−Ｙに対して幾分傾けて延在させることが好ましい。こ
のような接合部10によれば、相互に連結された積層フィ
ルム１，２を包装装置に適用して、たとえばそれを、図
３(b) に示すように幅方向に二つ折りにした状態で、そ
れらの両遊端部分に縦ヒートシール部11を、そして、フ
ィルムの長さ方向に間隔をおいた横ヒートシール部12を
それぞれ形成しつつ、被包装物の充填包装を行う場合
に、製造される包装袋13の前面部分13a と背面部分との
間で、接合部10の延在位置を縦ヒートシール部11の延在
方向にずらすことができる。その結果として、包装袋13
の特定個所への応力集中等を有効に防止して、包装袋13
の破袋強度を高めることができる。By the way, the fusion-bonded portion 10 as described above is
As shown in FIG. 3 (a), the width direction Y of the laminated films 1 and 2
It is preferable to extend at a slight inclination with respect to -Y. According to such a joint portion 10, the laminated films 1 and 2 which are connected to each other are applied to a packaging device, for example, in a state of being folded in two in the width direction as shown in FIG. 3 (b). , When forming a vertical heat-sealing portion 11 on both of these free end portions, and forming a horizontal heat-sealing portion 12 at intervals in the length direction of the film, when performing filling and packaging of the packaged object, The extending position of the joint portion 10 can be shifted in the extending direction of the vertical heat seal portion 11 between the front surface portion 13a and the rear surface portion of the packaging bag 13 to be formed. As a result, the packaging bag 13
Effectively prevent stress concentration on specific parts of the packaging bag 13
The bag breaking strength can be increased.
【００２３】しかるに、接合部10が延在する包装袋13
は、通常は、外観上の観点から、包装袋13の製造後に廃
棄等されるので、製品としての包装袋ほどに高い強度を
有する必要はなく、充填包装の終了に至るまで破袋等を
生じることなく、袋内被包装物の洩出、飛散等を阻止し
得れば足りることになる。However, the packaging bag 13 in which the joint portion 10 extends
Is usually discarded after the production of the packaging bag 13 from the viewpoint of appearance, so it does not need to have a high strength as a packaging bag as a product, and a bag is broken until the end of filling packaging. It would be sufficient if the packaged goods in the bag could be prevented from leaking out and scattering.
【００２４】図４は他の実施形態を示す拡大断面図であ
り、これは図１について述べた延伸フィルム層３，４の
接合部を、積層フィルム１の側へ折返して、そのフィル
ム１のシーラント層５と、接合部、たとえば融着接合部
10のシーラント層とを相互に対向させた状態とし、そこ
でそれらの両シーラント層を、たとえばヒートシールに
よって融着接合させたものである。FIG. 4 is an enlarged sectional view showing another embodiment, in which the joint portion of the stretched film layers 3 and 4 described with reference to FIG. 1 is folded back to the side of the laminated film 1 and the sealant of the film 1 is obtained. Layer 5 and joints, eg fusion splices
The ten sealant layers are made to face each other, and both sealant layers are fusion-bonded to each other by, for example, heat sealing.
【００２５】積層フィルム１，２のこのような連結構造
によれば、フィルム繋ぎ部の接合強度を一層高めること
ができ、併せて、一層すぐれた気密性をもたらすことが
できる。According to such a connecting structure of the laminated films 1 and 2, it is possible to further increase the bonding strength of the film connecting portion, and at the same time, to provide more excellent airtightness.
【００２６】なおこの場合にあってもまた、融着接合部
10を、図３に示すように、積層フィルム１，２の幅方向
に対して斜めに延在させることが好ましく、これによれ
ば、積層フィルムの両遊端部分に縦シールを施すに当
り、その接合部10に接合される、たとえば積層フィルム
１のその遊端部分には、図４に仮想線で示すように、接
合部が存在せず、ヒートシール表面に凹凸がないことか
ら、縦ヒートシールの確実性を高めて、さらにすぐれた
気密性を確保するとともに、より一層のヒートシール強
度を実現することができる。以上、積層フィルムを自動
充填包装に用いる場合を例として説明したが、この発明
は、一般的な製袋包装袋の他、包装用以外の各種の積層
フィルムにも適用することができる。Even in this case, the fusion-bonded joint is also formed.
As shown in FIG. 3, 10 is preferably extended obliquely with respect to the width direction of the laminated films 1 and 2. According to this, when performing vertical sealing on both free end portions of the laminated film, As shown in phantom lines in FIG. 4, the free end portion of the laminated film 1, which is joined to the joint portion 10, has no joint portion and the heat-sealing surface has no unevenness. It is possible to increase the reliability of the seal, to secure a further excellent airtightness, and to realize a further heat seal strength. Although the case where the laminated film is used for automatic filling and packaging has been described above as an example, the present invention can be applied to various laminated films other than packaging in addition to general bag-making packaging bags.
【００２７】[0027]
【実施例】この実施例は、下記の積層構成とした積層フ
ィルムを、インパルスシーラーを用いて、図５に示す二
種の連結方法 (ａ：合掌接合，ｂ：合掌折返し接合) を
採用して融着接合した例についての報告である。
(1) 積層フィルムの構成
NY１５／XA-S５０
PET１２／Ｄ／アルミニウム蒸着PET１２／XA-S４０
NY１５／Ｄ／Al７／XA-S５０
ただし、
NY１５：二軸延伸ナイロンフィルム層 (15μｍ)
XA-S５０：メタロセン触媒系ポリエチレン層 (50μｍ)
PET１２：二軸延伸ポリエチレンテレフタレートフィル
ム層 (12μm)
Ｄ： ドライラミネートによる接着層
XA-S４０：メタロセン触媒系ポリエチレン層 (40μｍ)
Al７ ：アルミニウム箔 (７μｍ)
である。
(2) 接合方法
ａ：合掌接合：延伸ベースフィルム層どうしを加圧下で
合掌状に溶断シールした。
ｂ：合掌折返し接合：延伸ベースフィルム層どうしを加
圧下で合掌状に溶断シールし、次いで合掌シール部を折
り畳んで加圧下にシーラント層どうしを再シールした。EXAMPLE This example is a laminated stack having the following laminated structure.
The film is shown in Fig. 5 using an impulse sealer.
Species connection method (a: Gassho joint, b: Gassho folded joint)
This is a report on an example of adopting and fusion bonding.
(1) Structure of laminated film
NY15/ XA-SFifty
PET12/ D / Aluminum deposition PET12/ XA-S40
NY15/ D / Al7/ XA-SFifty
However,
NY15: Biaxially stretched nylon film layer (15μm)
XA-SFifty: Metallocene catalyst-based polyethylene layer (50 μm)
PET12: Biaxially oriented polyethylene terephthalate fill
Layer (12 μm)
D: Adhesive layer by dry lamination
XA-S40: Metallocene catalyst-based polyethylene layer (40 μm)
Al7 : Aluminum foil (7μm)
Is.
(2) Joining method
a: Gassho joint: under pressure between the stretched base film layers
It was fused and sealed in a palm shape.
b: Folding back joint: Adding stretched base film layers
Melt and seal in a palm shape under pressure, then fold the palm seal section.
After folding, the sealant layers were resealed under pressure.
【００２８】(3) 試験結果の報告
まず、積層フィルムを用いてａ，ｂの接合方法を試み
た。接合方法と引張強度の関係を表１に示す。この表１
に示す結果から、接合方法ａに比べて、接合方法ｂの方
が強度が強いことがわかった。次に、上記積層フィルム
〜の引張強度と接合方法Ａ，Ｂの接合部の引張強度
を表２に示す。(3) Report of Test Results First, a joining method of a and b was tried using a laminated film. Table 1 shows the relationship between the joining method and the tensile strength. This table 1
From the results shown in (1), it was found that the joining method b had higher strength than the joining method a. Next, Table 2 shows the tensile strengths of the above laminated films to and the tensile strengths of the joints of the joining methods A and B.
【表１】 [Table 1]
【表２】 [Table 2]
【００２９】上掲の積層フィルム構造において、接合方
法ａに比べて接合方法ｂの方が、接合部の引張強度は大
きな値を示した。In the above-mentioned laminated film structure, the joining method b showed a larger tensile strength than the joining method a.
【００３０】[0030]
【発明の効果】かくして本発明によれば、積層フィルム
の相互連結に当って、延伸ベースフィルム層どうしを合
掌状に融着接合することで、包装装置の定常運転状態の
下で、それの主要機能部分等の一時停止なしに、フィル
ム繋ぎ部を装置に通過させることができるので、包装装
置の一時停止および再稼動を繰返す従来技術に比し、作
業能率および効率をともに大きく向上させることがで
き、併せて、積層フィルムおよび被包装物の歩留りをも
また大きく向上させることができる。According EFFECTS OF THE INVENTION Thus the present invention, hitting the interconnection of the laminated film, if the stretched base film layer to each other
By fusion- bonding in a palm shape , the film splicing part can be passed through the device under a steady operating condition of the packaging device without pausing the main functional parts of the packaging device. In addition, the work efficiency and efficiency can be greatly improved, and the yield of the laminated film and the object to be packaged can also be greatly improved as compared with the conventional technique in which re-operation is repeated.
【図１】本発明の実施の形態を示す拡大断面図である。FIG. 1 is an enlarged cross-sectional view showing an embodiment of the present invention.
【図２】延伸フィルム層の融着工程を概念的に例示する
断面図である。FIG. 2 is a cross-sectional view conceptually illustrating a fusion process of a stretched film layer.
【図３】接合部の傾斜延在例を示す図である。FIG. 3 is a diagram showing an example of an inclined extension of a joint portion.
【図４】他の実施形態を示す拡大断面図である。FIG. 4 is an enlarged cross-sectional view showing another embodiment.
【図５】実施例におけるフィルム連結方法を説明する図
である。FIG. 5 is a diagram illustrating a film connecting method in an example.
１，２ 積層フィルム ３，４ 延伸ベースフィルム ５，６ シーラント層 ７ インパルスシーラ ８ プッシャプレート ９ クランププレート 10 融着接合部 11 縦ヒートシール部 12 横ヒートシール 包装袋 1, 2 laminated film 3,4 Stretched base film 5,6 sealant layer 7 impulse sealer 8 pusher plate 9 Clamp plate 10 Fusion joint 11 Vertical heat seal part 12 Horizontal heat seal Packaging bag
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−72524（ＪＰ，Ａ) 実開 昭63−7519（ＪＰ，Ｕ) 特公 昭48−4388（ＪＰ，Ｂ１) 特公 平５−10213（ＪＰ，Ｂ２) 特公 昭55−46178（ＪＰ，Ｂ２) 実公 昭38−25685（ＪＰ，Ｙ１) 実公 平５−4995（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 65/00 - 65/82 B65H 19/00 - 19/30 B65H 21/00 - 21/02 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-72524 (JP, A) Actually opened S63-7519 (JP, U) JP-B 48-4388 (JP, B1) JP-B 5- 10213 (JP, B2) JP-B 55-46178 (JP, B2) JP-B 38-25685 (JP, Y1) JP-B 5-4995 (JP, Y2) (58) Fields investigated (Int.Cl. 7 , DB name) B29C 65/00-65/82 B65H 19/00-19/30 B65H 21/00-21/02
Claims (6)
ーラント層とを具える積層フィルムの、それぞれの端部
分を相互に連結するための構造であって、前記延伸ベー
スフィルム層どうしを合掌状に融着接合し、この融着接
合部の、他のフィルム部分からの突出量を50〜800μmと
してなる積層フィルムの連結構造。1. A structure for interconnecting end portions of a laminated film comprising a thermoplastic stretched base film layer and a sealant layer, wherein the stretched base film layers are arranged in a chiral pattern. fused junction connection structure of a laminated film this fusion junction, formed by a protrusion amount from the other film portion is <br/> with 50~800μ m.
積層フィルムの幅方向に対して斜めに延在させてなる請
求項１に記載の積層フィルムの連結構造。2. The fusion- bonded portion of the stretched base film layer,
The connection structure for a laminated film according to claim 1, wherein the laminated film is extended obliquely with respect to the width direction of the laminated film.
方の積層フィルム側へ折返して、相互に対向するシーラ
ント層どうしをさらに接合してなる請求項１または２に
記載の積層フィルムの連結構造。3. The laminated film connection structure according to claim 1, wherein the fusion-bonded joint portion of the stretched base film layer is folded back to one laminated film side, and the sealant layers facing each other are further joined together. .
ム層と、シーラント層とを具える積層フィルムの、それ
ぞれの端部分を相互に連結するに当り、 両積層フィルムを、延伸ベースフィルム層の相互の対向
姿勢で重ね合わせた状態で、それらの積層フィルムを、
インパルスシーラをもって溶断することにより、両延伸
ベースフィルム層を、溶断縁およびその近傍で合掌状に
融着接合させることを特徴とする、積層フィルムの連結
方法。4. A thermoplastic consisting stretched resin base film layer, the laminated film comprising a sealant layer, hit the interconnecting the respective end portions, both laminated film, the mutual oriented base film layer Opponent
In the state of overlapping in a posture , those laminated films ,
A method for connecting laminated films, characterized in that both stretched base film layers are fusion- bonded to each other in the shape of a palm at the fusing edge and in the vicinity thereof by fusing with an impulse sealer .
融着接合させることを特徴とする、請求項４に記載の積
層フィルムの連結方法。5. A two laminated films, characterized in that to by Blown fusion bonding under pressure, connecting method of a multilayer film according to claim 4.
方の積層フィルム側へ折返して、相互に対向するシーラ
ント層どうしをヒートシールすることを特徴とする、請
求項４または５に記載の積層フィルムの連結方法。6. The laminate according to claim 4, wherein the fusion-bonded joint portion of the stretched base film layer is folded back to one of the laminated film sides, and the sealant layers facing each other are heat-sealed. How to connect films.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000285690A JP3390737B2 (en) | 2000-07-19 | 2000-09-20 | Connection structure and connection method of laminated film |
| US10/362,974 US7381457B2 (en) | 2000-09-20 | 2001-08-30 | Structure, method, and device for splicing laminated films |
| PCT/JP2001/007497 WO2002024436A1 (en) | 2000-09-20 | 2001-08-30 | Structure, method, and device for splicing laminated films |
| KR10-2002-7003714A KR100462035B1 (en) | 2000-09-20 | 2001-08-30 | Connecting construction, connecting method and connecting apparatus of laminated flim |
| EP01961222A EP1325807B1 (en) | 2000-09-20 | 2001-08-30 | Structure, method, and device for splicing laminated films |
| US11/490,018 US7960002B2 (en) | 2000-09-20 | 2006-07-21 | Coupling structure, coupling process and coupling apparatus of laminate film |
| US13/096,277 US8281839B2 (en) | 2000-09-20 | 2011-04-28 | Coupling structure, coupling process and coupling apparatus of laminate film |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-218941 | 2000-07-19 | ||
| JP2000218941 | 2000-07-19 | ||
| JP2000285690A JP3390737B2 (en) | 2000-07-19 | 2000-09-20 | Connection structure and connection method of laminated film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002096391A JP2002096391A (en) | 2002-04-02 |
| JP3390737B2 true JP3390737B2 (en) | 2003-03-31 |
Family
ID=26596306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000285690A Expired - Fee Related JP3390737B2 (en) | 2000-07-19 | 2000-09-20 | Connection structure and connection method of laminated film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3390737B2 (en) |
-
2000
- 2000-09-20 JP JP2000285690A patent/JP3390737B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002096391A (en) | 2002-04-02 |
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