JP2002120292A - Method for connecting laminated film - Google Patents
Method for connecting laminated filmInfo
- Publication number
- JP2002120292A JP2002120292A JP2000317310A JP2000317310A JP2002120292A JP 2002120292 A JP2002120292 A JP 2002120292A JP 2000317310 A JP2000317310 A JP 2000317310A JP 2000317310 A JP2000317310 A JP 2000317310A JP 2002120292 A JP2002120292 A JP 2002120292A
- Authority
- JP
- Japan
- Prior art keywords
- film
- laminated
- layers
- sealant
- laminated 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.)
- Granted
Links
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、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方法に関し、とくに、積層
フィルムの相互連結部分にもまた、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
る技術を提案するものである。The present invention relates to a laminated film,
Many in laminated films used for packaging,
For example, a method for connecting a rear end portion of one laminated film and a front end portion of another laminated film without using an adhesive tape or other connecting materials, and particularly, also on an interconnecting portion of the laminated film. , Similar to other parts,
The present invention proposes a technology that enables liquid-tight or air-tight heat sealing.
【０００２】[0002]
【従来の技術】たとえば、液状体、粉状体その他を連続
充填包装する場合や、間欠充填包装する場合に使用され
て、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 laminated film for packaging used in the production of packaging bags filled with articles to be packaged, which is used for continuous filling and packaging of liquids, powders and the like and for intermittent filling and packaging. Is generally applied to a packaging device in a state of being wound into a roll through a printing process, 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
ール状に巻回されるフィルムの長さの調整を行って、た
とえば、フィルムのトータル巻回長さを1000ｍ、2000ｍ
等の所定長さにするために、積層フィルムどうしを連結
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としている。
このため、たとえば、2000ｍ巻きの巻回フィルムには、
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。[0003] In this case, in the slitting step, in addition to cutting and removing the side of the film in order to make the width dimension of the laminated film constant, a length of the film wound into a roll is mainly used. Adjust the total length of the film to 1000m, 2000m
In order to attain a predetermined length, the laminated films are connected with each other, and the film is connected after cutting and removing defective printing portions, defective laminating portions, and the like.
For this reason, for example, for a rolled film of 2000 m,
When the number is large, about two or three film connecting portions exist.
【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連結は、従来、一の積層
フィルムの後端と、他の積層フィルムの先端とを、ベー
スフィルム面側に貼り付けた粘着テープ等を介して突き
合わせ接合することにより行われている。[0004] By the way, conventionally, a laminated film having a base film layer and a sealant layer is connected by using an adhesive tape in which the rear end of one laminated film and the front end of another laminated film are adhered to the base film surface side. This is done by butt-joining.
【０００５】[0005]
【発明が解決しようとする課題】しかるに、このように
して連結された積層フィルムでは、それを用いて包装袋
を製造するに際し、積層フィルムとは異質の材料からな
る粘着テープ等が、積層フィルムの厚みの増加をもたら
すことに加え、粘着テープ等がそれに固有の物性の下
で、ヒートシール刃からシーラント層への熱の伝達を妨
げることになって、そのシーラント層を、シーラント層
相互の融着に十分な程度にまで溶融させることが実質的
に不可能であるため、たとえば、この積層フィルムを包
装装置に適用して連続充填包装等を行う場合、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
ての縦ヒートシール刃間にフィルム連結部をそのまま通
過させることができたとしても、シーラント層は、縦ヒ
ートシール刃の加熱加圧作用を受けてなお、十分に熱融
着することができず、それ故に、液体その他の被包装物
の漏出、飛散等が生じるという問題があった。そして、
同様のことは、粘着テープ等をもってしては、積層フィ
ルムの端部分の相互を、十分な気密性ないし液密性をも
って、包装袋に所要の強度の下で連結することができな
いことによってもまた発生する。However, in the laminated film connected in this way, when a packaging bag is manufactured using the laminated film, an adhesive tape or the like made of a material different from the laminated film is used. In addition to the increase in thickness, the adhesive tape and the like, under its own physical properties, hinder the transfer of heat from the heat seal blade to the sealant layer, so that the sealant layer is fused to the sealant layer. Because it is practically impossible to melt to a sufficient degree, for example, when applying this laminated film to a packaging device and performing continuous filling packaging or the like, a pair of rotating pairs maintaining a certain clearance, Even if the film connection can be passed between the vertical heat seal blades as a rotary seal blade, the sealant layer is heated by the vertical heat seal blades. Note undergoing a pressure effect, can not be sufficiently thermally fused, thus, leakage of liquid and other material to be packaged, there is a problem that scattering and the like may occur. And
The same is also true of the fact that the end portions of the laminated film cannot be connected to the packaging bag with sufficient airtightness or liquid tightness under the required strength with an adhesive tape or the like. appear.
【０００６】そこで従来は、積層フィルムの連結部が巻
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、その連結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としており、しか
も、その再開に当たっては、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た後に、装置を
本格的に再稼働することとしている。それ故に、装置ま
たは主要機能部分の一時停止から装置の再稼働に至るま
でに多くの時間および作業工数を必要とし、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, conventionally, every time the connecting portion of the laminated film is unwound from the wound film, the entire packaging device or the main portions such as the heat sealing function portion and the filling function portion are temporarily stopped, Filling and packaging are to be resumed after the connection has been passed through the main part of the device, and when resuming, check the quantity of objects to be packaged in the packaging bag, check the heat seal position and sealing state, After confirming the cutting position of the bag and the formation position of the tear notch, etc., and keeping all of these within the allowable range, the equipment is to be restarted in earnest. Therefore, a lot of time and man-hours were required from the suspension of the device or the main functional parts to the restart of the device, and there were major problems in work efficiency and efficiency, and in order to confirm such various types In addition, there is also a problem that a considerable amount of the laminated film and the articles to be packaged must be consumed, and the material yield decreases.
【０００７】そこでこの発明は、積層フィルムの相互連
結を、粘着テープ等の連結資材を用いることなく行っ
て、その連結部をもまた積層フィルムの他の部分と同様
に、包装袋の製袋に十分に寄与させるとともに、連結部
のすぐれた気密性および液密性を実現し、併せて、その
連結部に、十分な引張強度を付与することで、被包装物
の充填包装作業の能率および効率を有効に高め、また、
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
ムの連結方法を提供する。Therefore, according to the present invention, the interconnection of the laminated films is performed without using a coupling material such as an adhesive tape, and the coupling portion is formed into a packaging bag similarly to the other portions of the laminated film. In addition to making a sufficient contribution, it realizes excellent airtightness and liquid tightness of the connection part, and at the same time, imparts sufficient tensile strength to the connection part, so that the efficiency and efficiency of filling and packaging work of the packaged object To effectively increase
Provided is a method for connecting laminated films, which can greatly improve the material yield.
【０００８】[0008]
【課題を解決するための手段】この発明の、積層フィル
ムの連結方法は、熱可塑性の延伸ベースフィルム層と、
シーラント層とを具えるそれぞれの積層フィルムの端部
を相互連結するに当って、積層フィルムのそれぞれの端
部分を、シーラント層を対向させた姿勢で、好ましくは
加圧下で合掌状に融着接合させ、次いで、シーラント層
相互の接合部の、一方の積層フィルム側への折曲げ姿勢
で、相互に対向する延伸ベースフィルム層どうしを、加
圧下で融着させるものである。According to the present invention, there is provided a method for connecting a laminated film, comprising the steps of:
In interconnecting the ends of the respective laminated films with the sealant layer, the respective end portions of the laminated films are fusion-bonded in a posture facing the sealant layer, preferably in a palm-shape manner under pressure. Then, the stretched base film layers facing each other are fused under pressure in a posture in which the joint portion between the sealant layers is bent toward one of the laminated films.
【０００９】この方法によれば、一の積層フィルムの後
端と、他の積層フィルムの先端とを、粘着テープ等の連
結用資材を用いることなく、高い気密性および液密性を
もって相互連結することができる他、その連結部をもま
た、上記折曲げ融着側とは逆の面に露出するシーラント
層に固有の作用の下で、積層フィルムの他の部分と同様
に包装袋の製袋に十分に寄与させるとともに、連結部
に、包装袋に要求される破袋強度を付与することがで
き、これがため、被包装物の充填包装に際し、その連結
部が巻回フィルムから繰出されても、包装装置の定常運
転を継続して被包装物が充填された包装袋を連続的に製
造することができる。According to this method, the rear end of one laminated film and the front end of another laminated film are interconnected with high airtightness and liquid tightness without using a connecting material such as an adhesive tape. In addition to the above, the connection part can also be formed in the same manner as the other parts of the laminated film under the action inherent in the sealant layer exposed on the surface opposite to the bent fusion side. In addition to providing sufficient connection strength, the connecting portion can be provided with the bag breaking strength required for the packaging bag, and therefore, when filling and packaging the article to be packaged, even if the connecting portion is unwound from the wound film. In addition, it is possible to continuously manufacture the packaging bag filled with the article to be packaged by continuing the steady operation of the packaging apparatus.
【００１０】従って、積層フィルムの巻取りロールから
連結部が繰出される度に、包装装置の主要機能部等の一
時停止が必要となる従来技術に比し、充填包装作業の能
率および効率ならびに材料歩留りを大きく向上させるこ
とができる。[0010] Accordingly, the efficiency and efficiency of the filling and packaging operation as well as the material and the efficiency of the filling and packaging work are reduced as compared with the prior art, in which each time the connecting portion is unreeled from the take-up roll of the laminated film, it is necessary to temporarily stop the main functions of the packaging device. Yield can be greatly improved.
【００１１】このような方法において好ましくは、シー
ラント層相互の融着接合を溶断シールにより行う。これ
によれば、積層フィルムの全層が熱可塑性樹脂材料から
なる場合に、シーラント層相互の融着接合を溶断シール
によって行うことで、シーラント層の合掌状接合部の長
さを必要にして最小とすることができるので、それの折
曲げ姿勢で延伸ベースフィルム層どうしを融着させた場
合の、融着部の幅を線状程度にまで狭めることができ、
その融着部が包装袋の製袋に及ぼす影響を極力少ならし
めることができる。なお、この場合、折曲げ融着部の幅
は、０.１〜３ｍｍ、なかでも、０.５〜１ｍｍ程度とす
ることが好ましい。すなわち、それが０.１ｍｍ未満で
は、融着部の面積が小さくなりすぎて引張強度の確保が
難しく、一方３ｍｍを越えると、延伸ベースフィルム層
の相互融着のための高温、高圧の作用下でのシーラント
層の流動量が多くなりすぎて、シーラント層相互の合掌
状融着部の樹脂分が少なくなりすぎるため、これまた、
連結部の引張強度の確保が難しくなる。In such a method, preferably, the fusion bonding between the sealant layers is performed by a fusing seal. According to this, when all the layers of the laminated film are made of a thermoplastic resin material, the fusion bonding between the sealant layers is performed by the fusion seal, so that the length of the jointed joint portion of the sealant layer is required and the minimum. Therefore, when the stretched base film layers are fused together in the bending posture thereof, the width of the fused portion can be reduced to a linear degree,
The effect of the fused portion on the bag making of the packaging bag can be minimized. In this case, it is preferable that the width of the bent fusion-bonded portion is 0.1 to 3 mm, and more preferably, about 0.5 to 1 mm. That is, if it is less than 0.1 mm, the area of the fused portion becomes too small to secure the tensile strength, while if it exceeds 3 mm, it is under the action of high temperature and high pressure for mutual fusion of the stretched base film layers. Because the flow amount of the sealant layer in the excessively large, the resin content of the sealant fusion part of the sealant layers between each other is too small,
It becomes difficult to secure the tensile strength of the connecting portion.
【００１２】ところで、積層フィルムは、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構造とす
ることの他、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
その他の中間層を介在させることもでき、なかでもとく
に、アルミニウム箔、紙等の熱可塑性樹脂層を介在させ
た場合には、上述した方法において、シーラント層相互
の合掌状の融着接合の後、延伸ベースフィルム層どうし
の融着に先だって、合掌状融着接合部の下方で両積層フ
ィルムを切断して中間層等を切除することが好ましく、
これによれば、融着接合部に続く余剰部分を確実に除去
することができるので、接合部のその後の折曲げ融着に
よる融着幅を所定のものとして、その折曲げ融着部に十
分な引張強度を確保してなお、折曲げ融着部が製袋作業
等に及ぼす影響を十分小ならしめることができる。The laminated film is made of 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, a biaxially stretched ethylene / vinyl alcohol copolymer. In addition to having a laminated structure including a film layer and a sealant layer, for example, various polyethylene layers, an ethylene / vinyl acetate copolymer layer, an unstretched polypropylene, an ethylene / acrylic acid copolymer layer, an ionomer layer, etc. Between the stretched film layer and the sealant layer, in addition to various film layers, metal foils such as aluminum foil, paper, various vapor deposition layers, a vinylidene chloride copolymer coat layer, and other intermediate layers can also be interposed. In particular, when a thermoplastic resin layer such as aluminum foil or paper is interposed, In the method, after the fusion bonding of the sealant layers to each other, prior to the fusion of the stretched base film layers, cutting both the laminated films below the fusion bonding joint to cut off the intermediate layer and the like. Is preferred,
According to this, since the surplus portion following the fusion bonding portion can be reliably removed, the width of the fusion bonding by the subsequent bending fusion of the bonding portion is set to a predetermined value, and sufficient In addition, it is possible to sufficiently reduce the influence of the bent and fused portion on the bag making operation and the like while ensuring a high tensile strength.
【００１３】[0013]
【発明の実施の形態】図１は、この発明の一実施の態を
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
接に積層したシーラント層５、６とを具えるものであ
り、ここでははじめに、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、シーラント層５、６を合掌状に接合させる。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an enlarged sectional view showing an embodiment of the present invention. In the drawings, reference numerals 1 and 2 denote respective laminated films for packaging. Each of these laminated films 1 and 2 comprises a stretched base film layer 3 and 4 made of a thermoplastic resin material and, in the figure, sealant layers 5 and 6 directly laminated on the stretched base film layers 3 and 4. Here, first, the sealant layers 5 and 6 are joined in a palm-shape manner to join the rear end portion of one laminated film 1 and the front end portion of the other laminated film 2 together.
【００１４】両シーラント層５，６のこのような接合
は、そ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、シーラント層５、６を急激に加熱加圧すると
ともに冷却して、延伸ベースフィルム層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、シーラント層５、６を相互に対応させて
接触させた状態でそれらを溶断シールすることで、この
ときの溶断縁およびその近傍において両シーラント層
５、６を相互に熱融着させることが好ましい。次いでこ
こでは、シーラント層５、６、ひいては、積層フィルム
１、２の、このような合掌状の融着接合部７を、一方の
積層フィルム側、図では積層フィルム１側へ折曲げて相
互に対向する延伸ベースフィルム層３どうしを加熱加圧
下で融着させる。Such bonding of the two sealant layers 5 and 6 can be carried out by interposing an adhesive between the two layers, but without using a special connecting or joining material, and In order to perform the joining with sufficient strength, the sealant layers 5 and 6 are rapidly heated and pressurized and cooled, and are fused while restraining the heat shrinkage of the stretched base film layers 3 and 4. It is preferable to perform this. For this purpose, as described above, the two laminated films 1 and 2 are fused and sealed in a state where the sealant layers 5 and 6 are brought into contact with each other so that the fused edge at this time and the vicinity thereof can be obtained. It is preferable that the sealant layers 5 and 6 are heat-sealed to each other. Then, here, the sealant layers 5 and 6, and furthermore, such a joint-shaped fusion-bonded portion 7 of the laminated films 1 and 2 are bent toward one laminated film side, the laminated film 1 side in the figure, and mutually folded. The facing stretched base film layers 3 are fused under heat and pressure.
【００１５】このようにして構成される、積層フィルム
層１、２の連結部８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機密性およびヒ
ートシール強度を十分に発揮することができる。従っ
て、連結部を有する積層フィルムを、たとえば自動充填
包装装置に適用して、それを幅方向に二つ折りするとと
もに、縦ヒートシール刃で両遊端部分のシーラント層を
熱融着させながら、そのフィルム内へ被包装物を連続的
に、または間欠的に充填して包装袋を製造する場合に、
フィルム連結部が縦横いずれのヒートシール刃に達して
も包装装置を一時停止させることは全く不要となり、被
包装物の、十分な製袋包装を実現することができる。As described above, the connecting portion 8 of the laminated film layers 1 and 2 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 equipment
Through the passage, the confidentiality and heat sealing strength required for the packaging bag can be sufficiently exhibited. Therefore, the laminated film having a connecting portion is applied to, for example, an automatic filling and packaging apparatus, and is folded in the width direction, and the sealant layers at both free ends are heat-sealed with a vertical heat seal blade. When manufacturing packaging bags by continuously or intermittently filling the package into the film,
It is not necessary to stop the packaging device temporarily even when the film connecting portion reaches any of the vertical and horizontal heat sealing blades, and sufficient bag-making and packaging of the article to be packaged can be realized.
【００１６】ちなみに、延伸ベースフィルム層を、１５
μｍ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場合におけ
る、上記連結部の引張強度は、１５ｍｍ幅当り４０Ｎと
なり、これは、包装袋に一般的に要求される引張強度で
ある６０Ｎに対して約６７％の値であるが、被包装物の
充填包装に当って積層フィルムに作用する引張力であ
る、１５ｍｍ幅当り０.５Ｎよりははるかに大きい値で
あるので、その充填包装それ自体は何の支障もなしに行
うことができる。By the way, the stretched base film layer is
When the biaxially stretched nylon film layer having a thickness of μm is used and the sealant layer is made of a polyethylene layer having a thickness of 50 μm, the tensile strength of the connecting portion is 40 N per 15 mm width, which is generally required for packaging bags. It is about 67% of the tensile strength of 60N, but it is much larger than 0.5N per 15mm width, which is the tensile force acting on the laminated film in filling and wrapping the object. Therefore, the filling and packaging itself can be performed without any trouble.
【００１７】ところで、以上のような連結部８は、図２
(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
うな連結部８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２
(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、連結部８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。Incidentally, the connecting portion 8 as described above is
As shown in (a), the width direction Y-Y of the laminated films 1 and 2
It is preferable to extend at a slight angle with respect to. According to the connecting portion 8 described above, the interconnected laminated films 1 and 2 are applied to a packaging device, and for example, the
In the state of being folded in the width direction as shown in (b), a vertical heat seal portion 11 is provided at both free ends thereof, and a horizontal heat seal portion 12 is provided at intervals in the length direction of the film.
In the case of performing the filling and packaging of the article to be packaged while forming each, the extending position of the connecting portion 8 between the front portion 13a and the back portion of the manufactured packaging bag 13 is set to the vertical heat sealing portion 11.
Can be shifted in the extending direction. As a result, it is possible to effectively prevent stress concentration or the like on a specific portion of the packaging bag 13,
The breaking strength of the packaging bag 13 can be increased.
【００１８】しかるに、連結部８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、実用上は、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 from which the connecting portion 8 extends
Is usually discarded after the production of the packaging bag 13 from the viewpoint of appearance, so it is not necessary to have a strength as high as the packaging bag as a product in practical use, and it is broken until the end of the filling and packaging. It would suffice if it was possible to prevent the packaged objects in the bag from leaking, scattering, and the like without generating a bag or the like.
【００１９】ところで、このような連結部８は、たとえ
ば以下のようにして形成することができる。はじめに、
積層フィルム１、２のそれぞれの、後端部分１９と先端
部分２ａの所要長さを、図３(a)に示すように、１〜１
５ｍｍ、好ましくは２〜３ｍｍの間隔をおいて位置する
それぞれのベース２１、２２間へ、シーラント層を相互
に対向させた姿勢で差込み、そして、図３(b)に示すよ
うに、下方側のプッシャ２３をもって、両フィルム端部
分をシーラ１０に押圧しつつ、そのシーラ１０を作用さ
せて、シーラント層の相互が合掌状に融着接合される、
図３(c)に示すような溶断シールをもたらす。次いで、
図３(c)に示すように、プッシャ２３を後退変位させ
て、または後退変位させることなく、たとえば図３(d)
に示すように、フィルム先端部分２ａを、好ましくは、
両端部分１ａ、２ａ間へ挿入した位置決めゲージ２５に
よって拘束されるまで、両ベース２１、２２間から引き
上げ、これにより、シーラント層の融着接合部７を上方
側の融着シーラ２６に正確に対応させて位置させる。こ
の場合、融着接合部７は、この引き上げに伴うベース２
２との摩擦により必然的に遅れがちになって、フィルム
後端部分１ａ側に折曲げられる姿勢となる。Incidentally, such a connecting portion 8 can be formed, for example, as follows. First,
The required lengths of the rear end portion 19 and the front end portion 2a of each of the laminated films 1 and 2 are set to 1 to 1 as shown in FIG.
A sealant layer is inserted between the respective bases 21 and 22 located at an interval of 5 mm, preferably 2 to 3 mm with the sealant layers facing each other, and as shown in FIG. With the pusher 23, while pressing both end portions of the film against the sealer 10, the sealer 10 is caused to act, and the sealant layers are fusion-bonded to each other in a palm shape.
This results in a fusing seal as shown in FIG. Then
As shown in FIG. 3C, the pusher 23 is displaced backward or without being displaced, for example, as shown in FIG.
As shown in the figure, the film leading end portion 2a is preferably
It is pulled up from between the two bases 21 and 22 until it is restrained by the positioning gauge 25 inserted between the both end portions 1a and 2a, whereby the fusion bonding portion 7 of the sealant layer accurately corresponds to the fusion sealer 26 on the upper side. Let it be positioned. In this case, the fusion bonding portion 7 is attached to the base 2 due to the lifting.
Inevitably, the film tends to be delayed due to friction with the film 2 so that the film is bent toward the rear end portion 1a of the film.
【００２０】そこでその後は、位置決めゲージ２５の抜
出し下で、上方側のプッシャ２７を、図３(ｅ)に示すよ
うに進出変位させて、融着接合部７の一方側の延伸ベー
スフィルム層と、フィルム後端部分１ａの延伸ベースフ
ィルム層を十分に密着させるとともに、融着シーラ２６
を作用させて、それらの両延伸ベースフィルム層を十分
に融着させて、両積層フィルム１、２の、所期した通り
の連結をもたらし、最後に、両端部分１ａ、２ａを図３
(f)に示すように、ベース２１、２２間から引き出すこ
とで、一連の連結作業を終了する。Then, after the positioning gauge 25 is pulled out, the pusher 27 on the upper side is advanced and displaced as shown in FIG. 3 (e) so as to be in contact with the stretched base film layer on one side of the fusion bonding portion 7. The stretched base film layer at the rear end portion 1a of the film is brought into close contact with the fusion sealer 26.
To sufficiently fuse the two stretched base film layers to provide the desired connection of the two laminated films 1 and 2, and finally, to attach both end portions 1a and 2a to FIG.
As shown in (f), by pulling out from between the bases 21 and 22, a series of connecting work is completed.
【００２１】なおここで、積層フィルム１、２が、アル
ミニウム箔、紙等の溶断不能な中間層を具える場合に
は、プッシャ２３およびシーラ２４の下方側に隣接させ
て、切断手段、たとえば、一方のベースから他方のベー
スに向けて進退変位される剪断刃と、他方のベースに形
成されて、フィルム端部分１ａ、２ａの剪断に寄与する
受刃を画成する受容窪みとからなる剪断手段を設けるこ
とが好ましく、これによれば、下方のシーラ２４が溶断
シーラであると融着シーラであるとにかかわらず、シー
ラント層の合掌状の相互接合の後、それに連続するフィ
ルム端部を所期した通りの位置で確実に切断すること
で、その後の、シーラント層の相互接合部の折曲げ融着
を、常に一定の融着形態の下で行うことができる。Here, when the laminated films 1 and 2 are provided with a non-fusible intermediate layer such as aluminum foil or paper, cutting means such as cutting means, for example, is provided adjacent to the lower side of the pusher 23 and the sealer 24. A shearing means comprising a shearing blade which is displaced from one base toward the other base and a receiving recess formed on the other base and defining a receiving blade contributing to shearing of the film end portions 1a, 2a. According to this, regardless of whether the lower sealer 24 is a fusing sealer or a fusion sealer, after the jointed joint of the sealant layers, a film edge continuous therewith is located. By reliably cutting at the expected position, the subsequent bending and fusion of the interconnecting portions of the sealant layers can always be performed under a fixed fusion mode.
【００２２】[0022]
【発明の効果】以上に述べたところから明らかなよう
に、この発明によれば、積層フィルムの相互連結を、粘
着テープ等の連結用資材を用いることなく行って、すぐ
れた気密性および液密性をもたらすとともに、高い引張
強度をもたらすことができ、しかも、その連結部を、積
層フィルムの他の部分と同様に機能させることができる
ので、その連結部がヒートシール刃等に達する度毎の装
置等の一時停止が不要となって、包装作業能率および効
率の他、材料歩留りを大きく向上させることができる。As is apparent from the above description, according to the present invention, the interconnection of the laminated films is performed without using a coupling material such as an adhesive tape, and excellent air-tightness and liquid-tightness are obtained. As well as high tensile strength, and the connection can be made to function in the same manner as the other parts of the laminated film, so that each time the connection reaches the heat seal blade or the like. It is not necessary to temporarily stop the apparatus and the like, and it is possible to greatly improve the material yield in addition to the packaging operation efficiency and efficiency.
【図１】この発明の実施の形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】連結部の傾斜延在例を示す図である。FIG. 2 is a diagram illustrating an example of an inclined extension of a connecting portion.
【図３】積層フィルムの相互連結工程を例示する断面図
である。FIG. 3 is a cross-sectional view illustrating an interconnecting step of a laminated film.
１、２ 積層フィルム 1a、2a 端部分 ３、４ 延伸ベースフィルム層 ５、６ シーラント層 ７ 融着接合部 ８ 連結部 1, 2 Laminated film 1a, 2a end portion 3, 4 Stretched base film layer 5, 6 Sealant layer 7 Fusion bonding portion 8 Connecting portion
Claims (3)
ーラント層とを具えるそれぞれの積層フィルムの端部を
相互連結するに当たり、 積層フィルムのそれぞれの端部分を、シーラント層を相
互に対向させた姿勢で合掌状に融着接合させ、次いで、
シーラント層相互の接合部の、一方の積層フィルム側へ
の折曲げ姿勢で、相互に対向する延伸ベースフィルム層
どうしを加圧下で融着させる、積層フィルムの連結方
法。In order to interconnect the ends of each laminated film comprising a thermoplastic stretched base film layer and a sealant layer, each end portion of the laminated film is made to face the sealant layer to each other. Fused joint in a palm shape in a posture, then
A method for joining laminated films, wherein the stretched base film layers facing each other are fused under pressure in a posture in which the joint portions of the sealant layers are bent toward one of the laminated films.
−ルにより行う請求項１に記載の積層フィルムの連結方
法。2. The method according to claim 1, wherein the fusion bonding between the sealant layers is performed by a fusing seal.
ーラント層とを具えるそれぞれの積層フィルムの端部を
相互連結するに当たり、 積層フィルムのそれぞれの端部分を、シーラント層を相
互に対向させた姿勢で合掌状に融着接合させ、次いで、
シーラント層相互の接合部の下方で両積層フィルムを切
断し、さらに、その接合部の、一方の積層フィルム側へ
の折曲げ姿勢で、相互に対向する延伸ベースフィルム層
どうしを、加圧下で押圧しつつ融着させる、積層フィル
ムの連結方法。3. The interconnection of the ends of each laminated film comprising a thermoplastic stretched base film layer and a sealant layer, with each end of the laminated film facing the sealant layer to each other. Fused joint in a palm shape in a posture, then
The two laminated films are cut below the joint between the sealant layers, and the stretched base film layers facing each other are pressed under pressure in a posture in which the joint is bent toward one of the laminated films. A method of connecting laminated films while performing fusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000317310A JP3450817B2 (en) | 2000-10-18 | 2000-10-18 | Connection method of laminated film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000317310A JP3450817B2 (en) | 2000-10-18 | 2000-10-18 | Connection method of laminated film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002120292A true JP2002120292A (en) | 2002-04-23 |
| JP3450817B2 JP3450817B2 (en) | 2003-09-29 |
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ID=18796114
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000317310A Expired - Fee Related JP3450817B2 (en) | 2000-10-18 | 2000-10-18 | Connection method of laminated film |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801385A (en) * | 2022-03-29 | 2022-07-29 | 珠海市德燊环保包装有限公司 | Composite film and preparation method and application thereof |
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|---|---|---|---|---|
| JP5353096B2 (en) * | 2008-07-22 | 2013-11-27 | 株式会社湯山製作所 | Wrapping paper connection device, wrapping paper connection method, and packaging device |
| JP5729402B2 (en) * | 2013-02-01 | 2015-06-03 | 株式会社湯山製作所 | Wrapping paper connection device, wrapping paper connection method, and packaging device |
-
2000
- 2000-10-18 JP JP2000317310A patent/JP3450817B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801385A (en) * | 2022-03-29 | 2022-07-29 | 珠海市德燊环保包装有限公司 | Composite film and preparation method and application thereof |
| CN114801385B (en) * | 2022-03-29 | 2024-01-30 | 珠海市德燊环保包装有限公司 | Composite film and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| JP3450817B2 (en) | 2003-09-29 |
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