JP3966773B2 - Cylindrical film connection method and film roll - Google Patents

Cylindrical film connection method and film roll Download PDF

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Publication number
JP3966773B2
JP3966773B2 JP2002183374A JP2002183374A JP3966773B2 JP 3966773 B2 JP3966773 B2 JP 3966773B2 JP 2002183374 A JP2002183374 A JP 2002183374A JP 2002183374 A JP2002183374 A JP 2002183374A JP 3966773 B2 JP3966773 B2 JP 3966773B2
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Japan
Prior art keywords
film
tubular film
tubular
heat
sandwiched
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JP2004026377A (en
Inventor
浩治 今井
雅一 平山
貴子 長岡
善和 鹿倉
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Fuji Seal International Inc
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Fuji Seal International Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/38—Impulse heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/853—Machines for changing web rolls or filaments, e.g. for joining a replacement web to an expiring web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2795/00—Printing on articles made from plastics or substances in a plastic state
    • B29C2795/002—Printing on articles made from plastics or substances in a plastic state before shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys

Description

【０００１】
【発明の属する技術分野】
この発明は、シート状に折り畳んだ状態の筒状フィルム同士を相互に接続する筒状フィルム接続方法及びその接続方法に使用される筒状フィルムに関する。
【０００２】
【従来の技術】
ボトル等に装着されるシュリンクラベルやストレッチラベルのように、合成樹脂フィルムによって形成された筒状のラベルは、多数のラベルが連続的に繋がった状態でシート状に折り畳まれた長尺帯状のラベル形成基材を、ラベリング装置において順次切断することで個別のラベルを形成しながらボトル等に装着するのが一般的であり、こういった長尺帯状のラベル形成基材は、通常、紙管の周囲にロール状に巻回した基材ロールをラベリングシステムの基材送出装置にセットし、この基材送出装置から連続的に繰り出しながらラベリング装置に送出するようになっている。
【０００３】
ところで、ロール状に巻回することのできるラベル形成基材の長さには自ずと限界があるので、基材送出装置にセットされた基材ロールを頻繁に交換しなければならず、ラベリング装置を効率的に稼働させることができない。
【０００４】
このため、基材ロールからラベル形成基材が送出し終わると、そのラベル形成基材の終端部と、新たな基材ロールから繰り出したラベル形成基材の始端部とを自動的に接続した後、新たな基材ロールからラベル形成基材をラベリング装置に送出することが従来から望まれており、こういった筒状フィルムの自動接続に適した方法としては、例えば、以下に示すような筒状フィルムの接続方法が提案されている。
【０００５】
この筒状フィルムの接続方法では、まず、図１０（ａ）、（ｂ）に示すように、フィルムロールから繰り出した筒状フィルムＦの始端部における両側縁を切除することによって、離反可能な挟込部Ｓを予め形成しておき、フィルムロールから筒状フィルムＦが送出し終わると、図１１（ａ）、（ｂ）に示すように、新たなフィルムロールから繰り出した筒状フィルムＦの始端部に形成された挟込部Ｓに送出済みの筒状フィルムＦの終端部を挟み込んで、同図（ａ）に一点鎖線で示すように、相互に重なり合った送出済みの筒状フィルムＦの終端部と送出前の筒状フィルムＦの始端部とをヒートシールするようになっている。
【０００６】
【発明が解決しようとする課題】
上述した筒状フィルムの接続方法では、一方の筒状フィルムＦの始端部に形成された挟込部Ｓを相互に離反させることによって、その挟込部Ｓに他方の筒状フィルムＦの終端部を簡単に挟み込むことができるので、複雑な接続機構を使用しなくても簡単かつ確実に、双方の筒状フィルムＦを接続することができるという利点があるが、例えば、ボトル等に装着される筒状ラベルのように、フィルム内面またはフィルム外面に印刷層が形成されているような場合は、双方のフィルム同士のヒートシール性が悪くなり、十分な接着強度を確保することができないといった問題がある。
【０００７】
そこで、この発明の課題は、内面や外面に印刷層が形成されている場合であっても、十分な接着強度を確保することができる筒状フィルム接続方法及びその接続方法に使用される筒状フィルムを提供することにある。
【０００８】
【課題を解決するための手段及びその効果】
上記の課題を解決するため、請求項１にかかる発明は、内面に印刷層が形成された、シート状に折り畳んだ状態の筒状フィルム同士を相互に接続する筒状フィルム接続方法であって、接続しようとする一方の筒状フィルムには、予め、その端部における両側縁をそれぞれ切り開くことによって、離反可能な一対の挟込部を形成すると共に、一対の前記挟込部の内面に、外表面が感熱接着剤層によって形成された粘着シールをそれぞれ貼着しておき、前記粘着シールが貼着された前記筒状フィルムの挟込部に、接続しようとする他方の筒状フィルムの端部を挟み込んで、前記粘着シールと他方の筒状フィルムの端部とをヒートシールするようにしたことを特徴とする筒状フィルム接続方法を提供するものである。
【０００９】
以上のように、この筒状フィルム接続方法では、一方の筒状フィルムに形成された一対の挟込部の内面に、外表面が感熱接着剤層によって形成された粘着シールをそれぞれ貼着しておき、一方の筒状フィルムに形成された挟込部に、他方の筒状フィルムの端部を挟み込んだ状態で、粘着シールと他方の筒状フィルムとをヒートシールするようにしたので、筒状フィルムの内面に印刷層が形成されていても、一方の筒状フィルムの内面に貼着された粘着シールの外表面と、他方の筒状フィルムの外面とが確実にヒートシールされ、十分な接着強度を確保することができる。
【００１０】
また、上記の課題を解決するため、請求項２にかかる発明は、外面に印刷層が形成された、シート状に折り畳んだ状態の筒状フィルム同士を相互に接続する筒状フィルム接続方法であって、接続しようとする一方の筒状フィルムには、予め、その端部における両側縁をそれぞれ切り開くことによって、離反可能な一対の挟込部を形成すると共に、接続しようとする他方の筒状フィルムには、予め、その端部外面に、外表面が感熱接着剤層によって形成された粘着シールをそれぞれ貼着しておき、一方の前記筒状フィルムに形成された前記挟込部に、前記粘着シールが貼着された他方の前記筒状フィルムの端部を挟み込んで、前記粘着シールと一方の前記筒状フィルムの挟込部とをヒートシールするようにしたことを特徴とする筒状フィルム接続方法を提供するものである。
【００１１】
以上のように、この筒状フィルム接続方法では、他方の筒状フィルムの端部外面に、外表面が感熱接着剤層によって形成された粘着シールをそれぞれ貼着しておき、一方の筒状フィルムに形成された挟込部に、他方の筒状フィルムの端部を挟み込んだ状態で、粘着シールと一方の筒状フィルムとをヒートシールするようにしたので、筒状フィルムの外面に印刷層が形成されていても、他方の筒状フィルムの外面に貼着された粘着シールの外表面と、一方の筒状フィルムの内面とが確実にヒートシールされ、十分な接着強度を確保することができる。
【００１２】
請求項１にかかる発明の筒状フィルム接続方法を採用する場合は、請求項３にかかる発明のように、内面に印刷層が形成された、シート状に折り畳まれた長尺帯状の筒状フィルムをロール状に巻回してなるフィルムロールであって、前記筒状フィルムの一方の端部には、その両側縁を切り開くことによって形成された離反可能な一対の挟込部を有し、前記挟込部の内面には、外表面が感熱接着剤層によって形成された粘着シールがそれぞれ貼着されていることを特徴とするフィルムロールを使用すればよく、請求項２にかかる発明の筒状フィルム接続方法を採用する場合は、請求項４にかかる発明のように、外面に印刷層が形成された、シート状に折り畳まれた長尺帯状の筒状フィルムをロール状に巻回してなるフィルムロールであって、前記筒状フィルムの一方の端部には、その両側縁を切り開くことによって形成された離反可能な一対の挟込部を有し、前記筒状フィルムの他方の端部の外面には、外表面が感熱接着剤層によって形成された粘着シールがそれぞれ貼着されていることを特徴とするフィルムロールを使用すればよい。
【００１３】
【発明の実施の形態】
以下、実施の形態について図面を参照して説明する。図１（ａ）、（ｂ）に示す筒状フィルム１は、ボトル等に装着される筒状のラベルが連続的に繋がったものであり、シート状に折り畳んた状態でロール状に巻回したフィルムロールとしてフィルム送出装置にセットされ、フィルム送出装置によって、フィルムロールから繰り出しながら、ラベリング装置に送出される。
【００１４】
この筒状フィルム１は、図２に示すように、ポリエチレンテレフタレート等のポリエステル系樹脂やポリスチレン系樹脂等からなるシュリンクフィルムによって形成されたラベル基材１１と、このラベル基材１１の内面側にグラビア印刷等によって積層された、商品名や図柄等を表示する印刷層１２とから構成されており、フィルム送出装置から送出されてくる筒状フィルム１を、ラベリング装置が順次切断することによって個別のラベルが形成されるように、印刷層１２は、切断位置となる所定幅のクリア部分を介して断続的に形成されている。
【００１５】
この筒状フィルム１の一方の端部、即ち、フィルムロールからの繰り出し端となる筒状フィルム１の始端部には、図１（ａ）、（ｂ）に示すように、その両側縁を斜めに切除することによって、離反可能な挟込部Ｓが形成されており、この挟込部Ｓの内面には、所定幅のテープ状の粘着シール２０がそれぞれ貼着されている。
【００１６】
前記粘着シール２０は、図３に示すように、厚さが１０〜１００μｍのポリプロピレン、ポリエチレンテレフタレート、ポリエチレン等のプラスチックフィルム、合成紙、紙等によって形成されたシール基材２１と、このシール基材２１の内面に積層された粘着層２２と、シール基材２１の外面に積層された感熱接着剤層２３とからなる３層構造を有しており、粘着シール２０は、粘着層２２を介して筒状フィルム１の挟込部Ｓの内面に貼着されている。従って、加熱しない通常の状態では、挟込部Ｓの内面にそれぞれ貼着された粘着シール２０における感熱接着剤層２３同士が接触しても、粘着シール２０同士が接着されることはない。また、シール基材２１は、アルミニウム箔等の金属箔や金属蒸着フィルムまたはこれらの積層体によって形成することも可能であり、その場合は、金属検知器等によって粘着シールを検出することができるので、粘着シールが貼着された筒状フィルム（ラベル）がボトル等に装着された場合に、それを確実に除去することが可能になる。
【００１７】
前記粘着層２２は、アクリル系やゴム系等の粘着剤によって、厚さ１０〜３０μｍ程度に形成されており、挟込部Ｓの内面にそれぞれ貼着された粘着シール２０が容易に剥離されないように、ポリエチレンテレフタレートやポリスチレンによって形成された印刷層表面に対する接着強度が、５Ｎ／１５ｍｍ以上、好ましくは、１０Ｎ／１５ｍｍ以上の接着力を有している。なお、上述した粘着層２２の接着強度は、１５ｍｍ幅の短冊状試験片を被貼着体のフィルム片表面に２０ｍｍ幅で重ね合わせて貼着（粘着）し、引張試験機により１０００ｍｍ／ｍｉｎの速度で剪断方向に引っ張った際の接着強度を示している。
【００１８】
前記感熱接着剤層２３は、エチレン酢酸ビニル共重合体（ＥＶＡ）、エチレンアクリル酸エステル系樹脂、クロロプレン系、ネオプレン系の樹脂と固体可塑剤を含有したディレードタック型の感熱接着剤、エチレン酢酸ビニル共重合樹脂（ＥＶＡ）等のホットメルト接着剤、エチレン酢酸ビニル共重合樹脂（ＥＶＡ）、エチレンアクリル酸エチルエステル共重合体（ＥＥＡ）、エチレンメタクリル酸共重合体（ＥＭＡＡ）系の押出コーティング感熱接着剤、ＥＶＡ、ＥＥＡ等の有機溶剤溶液や水性エマルジョンを塗布乾燥して得られるパートコートタイプ（溶液塗布タイプ）の感熱接着剤等によって形成されており、７０〜１００℃で活性化して接着力を生じ、接着後における接着強度が、５Ｎ／１５ｍｍ以上、好ましくは、７Ｎ／１５ｍｍ以上の接着力を有している。なお、感熱接着剤層２３は、接着後すぐに接着力が発現（冷却）されるように、比較的薄く塗布できる溶液塗布タイプにより厚さ３〜１０μｍに形成しておくことが望ましい。また、上述した感熱接着剤層２３の接着強度は、１５ｍｍ幅の短冊状試験片を被貼着体のフィルム片表面に重ね、試験片の全幅にわたって３ｍｍ幅でヒートシールし、引張試験機により１０００ｍｍ／ｍｉｎの速度で剪断方向に引っ張った際の接着強度を示している。
【００１９】
以上のように構成された筒状フィルム１は、フィルム送出装置にセットされたフィルムロールから送出し終わると、新たなフィルムロールがフィルム送出装置にセットされ、このフィルムロールから繰り出された送出前の筒状フィルム１の始端部と、送出済みの筒状フィルム１の終端部とが接続されるようになっている。以下、その接続方法について、図４〜図６を参照しながら説明する。
【００２０】
まず、図４（ａ）、（ｂ）に示すように、送出前の筒状フィルム１の始端部に形成された挟込部Ｓを相互に離反させ、その離反させた挟込部Ｓに送出後の筒状フィルム１の終端部を挟み込む。このとき、送出済みの筒状フィルム１の終端部には、その内側に、プレート状のインナーガイドＩＧが収容されており、送出前の筒状フィルム１の始端部と送出済みの筒状フィルム１の終端部との重ね合わせ部分を外側から挟み込むことができるように、一対のインパルスシーラーＩＳが対向した状態で待機している。
【００２１】
続いて、図５に示すように、一対のインパルスシーラーＩＳが、送出前の筒状フィルム１の始端部と送出済みの筒状フィルム１の終端部との重ね合わせ部分を挟み込んでクランプした状態で、インパルスシーラーＩＳに電流を流して加熱すると、粘着シール２０の感熱接着剤層２３におけるインパルスシーラーＩＳが接触している領域が活性化し、送出前の筒状フィルム１の始端部に貼着されている粘着シール２０と、送出済みの筒状フィルム１の終端部外面とが接着されるので、送出済みの筒状フィルム１の終端部と送出前の筒状フィルム１の始端部とが粘着シール２０を介して接続される。
【００２２】
その後、図６に示すように、一対のインパルスシーラーＩＳを、送出前の筒状フィルム１の始端部と送出済みの筒状フィルム１の終端部との重ね合わせ部分から離反させると、フィルム送出装置が送出前の筒状フィルム１を送出可能な状態となる。この状態では、送出済みの筒状フィルム１の終端部が送出前の筒状フィルム１の始端部の内側に入り込んだ状態で相互に接続されているので、ラベリング装置がシート状に折り畳まれた筒状フィルム１を開口する際、筒状フィルム１同士の接続部分が開口機構部に引っかかることがなく、確実に開口することができる。
【００２３】
以上のように、この筒状フィルム１の接続方法では、送出前の筒状フィルム１の始端部に形成された挟込部Ｓの内面に、外表面が感熱接着剤層によって形成された粘着シール２０をそれぞれ貼着しておき、送出前の筒状フィルム１に形成された挟込部Ｓに、送出済みの筒状フィルム１の終端部を挟み込んだ状態で、粘着シール２０と送出済みの筒状フィルム１の終端部とをヒートシールするようにしたので、上述したように、筒状フィルム１を構成しているラベル基材１１の内面に印刷層１２が形成されている場合であっても、送出前の筒状フィルム１における印刷層１２が形成されている内面に貼着された粘着シール２０の外表面と、送出済みの筒状フィルム１における印刷層が形成されていない外面とが確実にヒートシールされ、十分な接着強度を確保することができる。
【００２４】
また、上述したように、始端部に予め粘着シール２０を貼着した挟込部Ｓが形成された筒状フィルム１を使用すると、フィルム送出装置に複雑な接続機構を付設することなく、既に提案されている接続方法をそのまま採用することができるので、内面側に印刷層が形成された筒状フィルムの自動接続を、低コストで効率よく実現することができるという効果が得られる。
【００２５】
なお、上述した実施形態では、筒状フィルム１を構成しているラベル基材１１が熱接着性に乏しいポリエチレンテレフタレート等のポリエステル系樹脂やポリスチレン系樹脂等からなるシュリンクフィルムによって形成されているシュリンクラベルの場合について説明したが、例えば、筒状フィルム１を構成しているラベル基材１１が、ポリエチレン系樹脂等からなる良好な熱接着性を有する弾性伸縮性フィルムによって形成されているようなストレッチラベルの場合は、図７に示すように、シール基材２１ａをラベル基材１１と同一素材であるポリエチレン系樹脂やエチレン酢酸ビニル共重合樹脂（ＥＶＡ）によって形成することで、シール基材２１ａ自体に熱接着性を付与し、シール基材２１ａの内面側にだけ粘着層２２が積層された２層構造の粘着シール２０ａを使用することも可能である。この場合、シール基材２１ａ自体が本発明の感熱接着剤層を構成することになる。
【００２６】
また、上述した実施形態では、ラベル基材１１の内面に印刷層１２が形成された筒状フィルム１の場合について説明したが、これに限定されるものではなく、例えば、ラベル基材の外面に印刷層が形成されている筒状フィルムの場合は、図８（ａ）、（ｂ）に示すように、筒状フィルム２の一方の端部、即ち、フィルムロールからの繰り出し端となる筒状フィルム２の始端部に、離反可能な挟込部Ｓを形成すると共に、筒状フィルム２の他方の端部、即ち、フィルムロールの巻き始め端である筒状フィルム２の終端部の外面に粘着シール２０をそれぞれ貼着しておけば、図９（ａ）、（ｂ）に示すように、送出前の筒状フィルム２の始端部に形成された挟込部Ｓを相互に離反させ、その離反させた挟込部Ｓに送出後の筒状フィルム２の終端部を挟み込み、双方の筒状フィルム２の重ね合わせ部分をヒートシールすると、送出済みの筒状フィルム２における印刷層が形成されている外面に貼着された粘着シール２０の外表面と、送出前の筒状フィルム２における印刷層が形成されていない内面とが確実にヒートシールされ、十分な接着強度を確保することができる。
【００２７】
また、この場合も、筒状フィルム２を構成しているラベル基材が、ポリエチレン系樹脂等からなる良好な熱接着性を有する弾性伸縮性フィルムによって形成されているような場合は、図７に示すような２層構造の粘着シール２０ａを使用することも可能である。
【００２８】
また、上述した各実施形態では、筒状フィルムを構成しているラベル基材の内面側または外面側のいずれか一方に、印刷層が形成されている場合について説明したが、ラベル基材の内面側及び外面側の双方に印刷層が形成されている筒状フィルムについても本発明を適用することができ、その場合は、筒状フィルムの始端部に形成された挟込部の内面または筒状フィルムの終端部の外面のいずれか一方に、図３に示すような３層構造の粘着シール２０を貼着しておけばよい。
【００２９】
また、上述した各実施形態では、筒状フィルム１、２の始端部を離反させることができるように、筒状フィルム１、２の始端部における両側縁を斜めに切除するようにしているが、これに限定されるものではなく、筒状フィルムの始端部における両側縁を切り開くようにしてもよい。
【００３０】
また、上述した各実施形態では、ボトル等に装着される筒状のラベルが連続的に繋がった筒状フィルム及びその接続方法について説明したが、これに限定されるものではなく、内面側や外面側が適正なヒートシール性を有していない種々の筒状フィルムに対して本発明を適用することができることはいうまでもない。
【図面の簡単な説明】
【図１】（ａ）はこの発明にかかる筒状フィルムの一実施形態を示す平面図、（ｂ）は同上の筒状フィルムを示す側面図である。
【図２】同上の筒状フィルムを示す断面図である。
【図３】同上の筒状フィルムに貼着される粘着シールを示す断面図である。
【図４】（ａ）、（ｂ）は同上の筒状フィルムの接続方法を示す工程図である。
【図５】同上の筒状フィルムの接続方法を示す工程図である。
【図６】同上の筒状フィルムの接続方法を示す工程図である。
【図７】同上の粘着シールの変形例を示す断面図である。
【図８】（ａ）は他の実施形態である筒状フィルムを示す平面図、（ｂ）は同上の筒状フィルムを示す側面図である。
【図９】（ａ）、（ｂ）は同上の筒状フィルムの接続方法を示す工程図である。
【図１０】（ａ）、（ｂ）は背景技術としての筒状フィルムの接続方法を示す工程図である。
【図１１】（ａ）、（ｂ）は同上の接続方法を示す工程図である。
【符号の説明】
１、２ 筒状フィルム
１１ ラベル基材
１２ 印刷層
２０、２０ａ 粘着シール
２１、２１ａ シール基材
２２ 粘着層
２３ 感熱接着剤層
Ｓ 挟込部
ＩＧ インナーガイド
ＩＳ インパルスシーラー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tubular film connecting method for connecting tubular films in a state of being folded into a sheet shape, and a tubular film used in the connecting method.
[0002]
[Prior art]
Cylindrical labels formed of synthetic resin films, such as shrink labels and stretch labels attached to bottles, etc., are long strip labels that are folded into a sheet with a number of labels connected continuously. It is common to mount the forming substrate on a bottle or the like while forming individual labels by sequentially cutting in a labeling device. Such a long strip-shaped label forming substrate is usually a paper tube. A base material roll wound around in the form of a roll is set in a base material delivery device of a labeling system, and is sent out to the labeling device while being continuously fed out from the base material delivery device.
[0003]
By the way, since the length of the label-forming base material that can be wound in a roll shape is naturally limited, the base material roll set in the base material feeding device must be frequently replaced, and the labeling device It cannot be operated efficiently.
[0004]
For this reason, after the label forming base material has been sent out from the base material roll, the end portion of the label forming base material is automatically connected to the starting end portion of the label forming base material fed out from the new base material roll. In the past, it has been desired to feed a label-forming substrate from a new substrate roll to a labeling device. As a method suitable for automatic connection of such a tubular film, for example, a tube as shown below A method for connecting a film-like film has been proposed.
[0005]
In this tubular film connecting method, as shown in FIGS. 10 (a) and 10 (b), first, both side edges at the starting end portion of the tubular film F fed out from the film roll are cut off so as to be separated. When the insertion portion S is formed in advance and the tubular film F is sent out from the film roll, as shown in FIGS. 11 (a) and 11 (b), the starting end of the tubular film F fed out from the new film roll The end of the sent-out tubular film F is sandwiched between the end portions of the sent-out tubular film F in the sandwiching part S formed in the part, and as shown by the alternate long and short dash line in FIG. And the start end of the tubular film F before delivery are heat-sealed.
[0006]
[Problems to be solved by the invention]
In the tubular film connecting method described above, the end portion of the other tubular film F is placed on the sandwiched portion S by separating the sandwiched portions S formed at the starting end portion of the one tubular film F from each other. Can be sandwiched easily, and there is an advantage that both the tubular films F can be connected easily and reliably without using a complicated connection mechanism. When a printing layer is formed on the inner surface of the film or the outer surface of the film as in the case of a cylindrical label, the heat sealability between the two films deteriorates, and there is a problem that sufficient adhesive strength cannot be ensured. is there.
[0007]
Then, even if it is a case where the printing layer is formed in the inner surface and the outer surface, the subject of this invention is the cylindrical film connection method which can ensure sufficient adhesive strength, and the cylindrical shape used for the connection method To provide a film.
[0008]
[Means for solving the problems and effects thereof]
In order to solve the above-mentioned problem, the invention according to claim 1 is a tubular film connecting method for mutually connecting tubular films in a state of being folded into a sheet with a printed layer formed on the inner surface , In one tubular film to be connected, a pair of detachable sandwiching portions is formed in advance by opening both side edges at the end portions in advance, and an outer surface is formed on the inner surface of the pair of sandwiching portions. surface leave attached respectively an adhesive seal formed by heat-sensitive adhesive layer, the nip portion of the tubular film in which the adhesive seal is attached, the end of the other of the tubular film to be connected A cylindrical film connecting method is provided in which the adhesive seal and the end of the other cylindrical film are heat-sealed.
[0009]
As described above, in this tubular film connecting method, the adhesive seals each having the outer surface formed by the heat-sensitive adhesive layer are adhered to the inner surfaces of the pair of sandwiched portions formed on one tubular film. Since the adhesive seal and the other tubular film are heat-sealed with the end portion of the other tubular film sandwiched between the sandwiched portions formed on one tubular film , the tubular shape be the inner surface printed layer is formed of a film, and one of the tubular film inner surface is adhered the adhesive seal of the outer surface of the reliably heat sealing the outer surface of the other of the tubular film, sufficient adhesion Strength can be secured.
[0010]
In order to solve the above-mentioned problems, the invention according to claim 2 is a tubular film connecting method for mutually connecting tubular films folded in a sheet shape having a printed layer formed on the outer surface. Then, in the one tubular film to be connected, a pair of detachable sandwiching portions are formed in advance by cutting both side edges at the end portions in advance, and the other tubular film to be connected is formed. the advance, at its end an outer surface, an adhesive seal outer surface formed by the heat-sensitive adhesive layer in advance by sticking respectively, to the nip portion formed on one of the tubular film, the adhesive A tubular film contact characterized in that an end of the other tubular film to which the seal is stuck is sandwiched to heat-seal the adhesive seal and the sandwiched portion of the one tubular film. It is to provide a method.
[0011]
As described above, in this tubular film connection method, the adhesive seal formed on the outer surface of the other tubular film with the heat-sensitive adhesive layer is adhered to the outer surface of the end portion of the other tubular film. Since the adhesive seal and the one tubular film are heat-sealed in a state where the end portion of the other tubular film is sandwiched between the sandwiched portions formed in the printing layer, the printing layer is formed on the outer surface of the tubular film. be formed, the other tubular outer surface of the adhered cohesive seal the outer surface of the film, the inner surface of one of the tubular film can be reliably heat-sealed, can be ensured a sufficient adhesion strength .
[0012]
When the cylindrical film connecting method of the invention according to claim 1 is adopted, as in the invention according to claim 3, a long belt-like tubular film folded in a sheet shape having a printing layer formed on the inner surface. the a film roll formed by winding into a roll, at one end of the tubular film has a pair of pinching portion capable separated which is formed by cutting open the side edges, the clamping It is sufficient to use a film roll characterized in that an adhesive seal whose outer surface is formed by a heat-sensitive adhesive layer is adhered to the inner surface of the insert portion, and the cylindrical film of the invention according to claim 2 In the case of adopting the connection method, as in the invention according to claim 4, a film roll formed by winding a long strip-like tubular film folded in a sheet shape and having a printed layer formed on the outer surface into a roll shape there is, before At one end of the tubular film, a pair of pinching portion capable separated which is formed by cutting open the side edges, the outer surface of the other end portion of the tubular film, the outer surface What is necessary is just to use the film roll characterized by the adhesion seal | sticker formed with the heat-sensitive adhesive layer being affixed, respectively.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. The cylindrical film 1 shown to Fig.1 (a), (b) is the thing with which the cylindrical label with which a bottle etc. were mounted | worn was connected continuously, and was wound in roll shape in the state folded in the sheet form. The film roll is set in a film delivery device, and is sent out to the labeling device while being fed out from the film roll by the film delivery device.
[0014]
As shown in FIG. 2, the cylindrical film 1 includes a label substrate 11 formed of a shrink film made of a polyester resin such as polyethylene terephthalate, a polystyrene resin, or the like, and a gravure on the inner surface side of the label substrate 11. It is composed of a printing layer 12 that displays product names, designs, etc., laminated by printing, etc., and the labeling device sequentially cuts the tubular film 1 delivered from the film delivery device, so that individual labels The printing layer 12 is intermittently formed through a clear portion having a predetermined width serving as a cutting position.
[0015]
As shown in FIGS. 1 (a) and 1 (b), one end of the tubular film 1, that is, the starting end of the tubular film 1 serving as the feeding end from the film roll, is slanted on both side edges. By being cut out, a separable sandwiching portion S is formed, and a tape-like adhesive seal 20 having a predetermined width is adhered to the inner surface of the sandwiching portion S, respectively.
[0016]
As shown in FIG. 3, the adhesive seal 20 includes a seal substrate 21 formed of a plastic film such as polypropylene, polyethylene terephthalate, polyethylene, or the like having a thickness of 10 to 100 μm, synthetic paper, paper, and the like, and the seal substrate. 21 has a three-layer structure consisting of an adhesive layer 22 laminated on the inner surface of 21 and a heat-sensitive adhesive layer 23 laminated on the outer surface of the seal substrate 21, and the adhesive seal 20 is interposed via the adhesive layer 22. It is affixed on the inner surface of the sandwiching part S of the tubular film 1. Therefore, in a normal state where heating is not performed, even if the heat-sensitive adhesive layers 23 of the adhesive seal 20 adhered to the inner surface of the sandwiched portion S are in contact with each other, the adhesive seals 20 are not bonded to each other. Further, the sealing substrate 21 can be formed of a metal foil such as an aluminum foil, a metal vapor-deposited film, or a laminate thereof, and in that case, an adhesive seal can be detected by a metal detector or the like. When a tubular film (label) with an adhesive seal is attached to a bottle or the like, it can be removed reliably.
[0017]
The pressure-sensitive adhesive layer 22 is formed to have a thickness of about 10 to 30 μm by an acrylic or rubber-based pressure-sensitive adhesive so that the pressure-sensitive adhesive seals 20 respectively attached to the inner surface of the sandwiching portion S are not easily peeled off. Furthermore, the adhesive strength with respect to the surface of the printing layer formed of polyethylene terephthalate or polystyrene has an adhesive force of 5 N / 15 mm or more, preferably 10 N / 15 mm or more. In addition, the adhesive strength of the adhesive layer 22 described above is such that a strip-shaped test piece having a width of 15 mm is attached to the surface of a film piece of the adherend with a width of 20 mm and adhered (adhesion), and is 1000 mm / min by a tensile tester. It shows the adhesive strength when pulled in the shear direction at a speed.
[0018]
The heat-sensitive adhesive layer 23 is composed of an ethylene vinyl acetate copolymer (EVA), an ethylene acrylate ester resin, a chloroprene resin, a neoprene resin and a delayed tack type heat sensitive adhesive containing a solid plasticizer, ethylene vinyl acetate. Hot melt adhesive such as copolymer resin (EVA), ethylene vinyl acetate copolymer resin (EVA), ethylene acrylic acid ethyl ester copolymer (EEA), ethylene methacrylic acid copolymer (EMAA) type extrusion coating thermal adhesive It is formed with a part-coat type (solution application type) heat-sensitive adhesive obtained by applying and drying organic solvent solutions such as water, EVA, EEA, and aqueous emulsions, and activates at 70-100 ° C to provide adhesive strength. Resulting in an adhesive strength after bonding of 5 N / 15 mm or more, preferably 7 N / 15 mm It has an adhesive force of the above. The heat-sensitive adhesive layer 23 is desirably formed to a thickness of 3 to 10 μm by a solution coating type that can be applied relatively thinly so that an adhesive force is expressed (cooled) immediately after bonding. The adhesive strength of the above-mentioned heat-sensitive adhesive layer 23 is such that a strip-shaped test piece having a width of 15 mm is stacked on the surface of the film piece of the adherend, heat-sealed with a width of 3 mm over the entire width of the test piece, and 1000 mm by a tensile tester. It shows the adhesive strength when pulled in the shear direction at a speed of / min.
[0019]
When the cylindrical film 1 configured as described above is sent out from the film roll set in the film sending device, a new film roll is set in the film sending device, and the pre-sending before being fed out from this film roll. A starting end portion of the tubular film 1 and a terminal end portion of the sent tubular film 1 are connected to each other. Hereinafter, the connection method will be described with reference to FIGS.
[0020]
First, as shown in FIGS. 4 (a) and 4 (b), the sandwiched portions S formed at the starting end of the tubular film 1 before delivery are separated from each other and delivered to the separated sandwiched portions S. The terminal portion of the subsequent tubular film 1 is sandwiched. At this time, a plate-shaped inner guide IG is accommodated inside the end portion of the sent-out tubular film 1, and the start-end portion of the tubular film 1 before sending and the sent-out tubular film 1 are accommodated. A pair of impulse sealers IS are waiting in a state of being opposed to each other so that the overlapping portion with the terminal portion can be sandwiched from the outside.
[0021]
Subsequently, as shown in FIG. 5, the pair of impulse sealers IS are clamped by sandwiching the overlapping portion of the starting end of the tubular film 1 before sending and the terminal end of the sending tubular film 1. When the current is passed through the impulse sealer IS and heated, the area of the heat-sensitive adhesive layer 23 of the adhesive seal 20 in contact with the impulse sealer IS is activated and adhered to the starting end of the tubular film 1 before delivery. Since the adhesive seal 20 and the outer end surface of the tubular film 1 that has been sent out are bonded together, the end part of the tubular film 1 that has been sent out and the start end of the tubular film 1 that has been sent out are adhered to the adhesive seal 20. Connected through.
[0022]
After that, as shown in FIG. 6, when the pair of impulse sealers IS are separated from the overlapping portion of the starting end portion of the tubular film 1 before sending and the terminal end portion of the sending tubular film 1, the film sending device Will be in the state which can send out the cylindrical film 1 before sending out. In this state, since the end portion of the tubular film 1 that has already been sent is connected to the inside of the starting end portion of the tubular film 1 that has not been sent, the labeling device is folded into a sheet shape. When the cylindrical film 1 is opened, the connecting portion between the cylindrical films 1 is not caught by the opening mechanism part, and can be reliably opened.
[0023]
As described above, in this connection method of the tubular film 1, an adhesive seal in which the outer surface is formed by the heat-sensitive adhesive layer on the inner surface of the sandwiching portion S formed at the starting end portion of the tubular film 1 before delivery. The adhesive seal 20 and the cylinder that has been sent out are attached in a state in which the terminal part of the tubular film 1 that has already been sent is sandwiched in the sandwiching part S that is formed on the cylindrical film 1 before delivery. Since the end portion of the film-like film 1 is heat-sealed, as described above, even when the printing layer 12 is formed on the inner surface of the label base material 11 constituting the tubular film 1. The outer surface of the adhesive seal 20 adhered to the inner surface of the tubular film 1 before delivery on which the printing layer 12 is formed and the outer surface of the delivered tubular film 1 on which the printing layer is not formed are reliable. Heat sealed to enough It is possible to ensure the wearing strength.
[0024]
In addition, as described above, when the tubular film 1 in which the sandwiching portion S in which the adhesive seal 20 is previously pasted is used at the start end portion is used, it has already been proposed without adding a complicated connection mechanism to the film delivery device. Since the connected connection method can be employed as it is, an effect of being able to efficiently realize low-cost and efficient automatic connection of a cylindrical film having a printed layer formed on the inner surface side is obtained.
[0025]
In the above-described embodiment, the label substrate 11 constituting the tubular film 1 is formed of a shrink film made of a polyester resin such as polyethylene terephthalate having poor thermal adhesiveness, a polystyrene resin, or the like. However, for example, the label substrate 11 constituting the tubular film 1 is formed of an elastic stretch film having a good thermal adhesive property made of a polyethylene resin or the like. In this case, as shown in FIG. 7, the seal base material 21a is formed of a polyethylene resin or ethylene vinyl acetate copolymer resin (EVA), which is the same material as the label base material 11, so that the seal base material 21a itself is formed. 2 in which the adhesive layer 22 is laminated only on the inner surface side of the sealing base material 21a with heat adhesion. It is also possible to use an adhesive seal 20a of the structure. In this case, the sealing substrate 21a itself constitutes the heat-sensitive adhesive layer of the present invention.
[0026]
Moreover, although embodiment mentioned above demonstrated the case of the cylindrical film 1 in which the printing layer 12 was formed in the inner surface of the label base material 11, it is not limited to this, For example, on the outer surface of a label base material In the case of a tubular film on which a printed layer is formed, as shown in FIGS. 8A and 8B, one end of the tubular film 2, that is, a tubular shape serving as a feeding end from a film roll. A separable sandwiching portion S is formed at the starting end portion of the film 2, and the other end portion of the tubular film 2, that is, the outer surface of the end portion of the tubular film 2 that is the winding start end of the film roll is adhered. If each of the seals 20 is attached, as shown in FIGS. 9 (a) and 9 (b), the sandwiched portions S formed at the starting end portion of the tubular film 2 before delivery are separated from each other, End portion of tubular film 2 after being sent to sandwiched portion S separated When the sandwiched portion of both tubular films 2 is heat-sealed, the outer surface of the adhesive seal 20 adhered to the outer surface of the tubular film 2 that has been sent is formed on the outer surface of the tubular film 2 and the cylinder before delivery. The inner surface of the film-like film 2 on which the printed layer is not formed is reliably heat-sealed, and sufficient adhesive strength can be ensured.
[0027]
Also in this case, when the label base material constituting the tubular film 2 is formed of an elastic stretchable film having good thermal adhesion made of a polyethylene resin or the like, FIG. It is also possible to use a two-layer adhesive seal 20a as shown.
[0028]
Moreover, in each embodiment mentioned above, although the case where the printing layer was formed in either one of the inner surface side of the label base material which comprises the cylindrical film, or the outer surface side was demonstrated, the inner surface of a label base material The present invention can also be applied to a cylindrical film in which a printed layer is formed on both the side and the outer surface side. In that case, the inner surface or the cylindrical shape of the sandwiched portion formed at the starting end of the cylindrical film What is necessary is just to stick the adhesive seal 20 of the 3 layer structure as shown in FIG. 3 to either one of the outer surfaces of the terminal part of a film.
[0029]
Moreover, in each embodiment mentioned above, although it is trying to cut off the both-sides edge in the starting end part of the cylindrical films 1 and 2 diagonally so that the starting end part of the cylindrical films 1 and 2 can be separated, It is not limited to this, You may make it open both the side edges in the start end part of a cylindrical film.
[0030]
Moreover, in each embodiment mentioned above, although the cylindrical film with which the cylindrical label with which a bottle etc. were mounted | worn was connected continuously, and its connection method were demonstrated, it is not limited to this, An inner surface side and an outer surface It goes without saying that the present invention can be applied to various tubular films whose sides do not have proper heat sealability.
[Brief description of the drawings]
1A is a plan view showing an embodiment of a tubular film according to the present invention, and FIG. 1B is a side view showing the same tubular film.
FIG. 2 is a cross-sectional view showing the above tubular film.
FIG. 3 is a cross-sectional view showing an adhesive seal adhered to the above tubular film.
FIGS. 4A and 4B are process diagrams showing a connecting method of the above tubular film.
FIG. 5 is a process diagram showing a connecting method of the tubular film same as above.
FIG. 6 is a process diagram showing a connecting method of the tubular film.
FIG. 7 is a cross-sectional view showing a modification of the above adhesive seal.
8A is a plan view showing a tubular film according to another embodiment, and FIG. 8B is a side view showing the tubular film same as above.
FIGS. 9A and 9B are process diagrams showing a connecting method of the above tubular film.
FIGS. 10A and 10B are process diagrams showing a tubular film connecting method as a background art.
11A and 11B are process diagrams showing a connection method according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 2 Cylindrical film 11 Label base material 12 Print layer 20, 20a Adhesive seal 21, 21a Seal base material 22 Adhesive layer 23 Heat sensitive adhesive layer S Clamping part IG Inner guide IS Impulse sealer

Claims (4)

内面に印刷層が形成された、シート状に折り畳んだ状態の筒状フィルム同士を相互に接続する筒状フィルム接続方法であって、
接続しようとする一方の筒状フィルムには、予め、その端部における両側縁をそれぞれ切り開くことによって、離反可能な一対の挟込部を形成すると共に、一対の前記挟込部の内面に、外表面が感熱接着剤層によって形成された粘着シールをそれぞれ貼着しておき、
前記粘着シールが貼着された前記筒状フィルムの挟込部に、接続しようとする他方の筒状フィルムの端部を挟み込んで、前記粘着シールと他方の筒状フィルムの端部とをヒートシールするようにしたことを特徴とする筒状フィルム接続方法。A cylindrical film connection method in which a cylindrical film in a state of being folded into a sheet is formed with a printed layer on the inner surface ,
In one tubular film to be connected, a pair of detachable sandwiching portions is formed in advance by opening both side edges at the end portions in advance, and an outer surface is formed on the inner surface of the pair of sandwiching portions. surface leave attached respectively an adhesive seal formed by heat-sensitive adhesive layer,
The end portion of the other tubular film to be connected is sandwiched in the sandwiched portion of the tubular film to which the adhesive seal is stuck, and the end portion of the other tubular film is heat-sealed. A tubular film connection method characterized by comprising the steps of: 外面に印刷層が形成された、シート状に折り畳んだ状態の筒状フィルム同士を相互に接続する筒状フィルム接続方法であって、
接続しようとする一方の筒状フィルムには、予め、その端部における両側縁をそれぞれ切り開くことによって、離反可能な一対の挟込部を形成すると共に、接続しようとする他方の筒状フィルムには、予め、その端部外面に、外表面が感熱接着剤層によって形成された粘着シールをそれぞれ貼着しておき、
一方の前記筒状フィルムに形成された前記挟込部に、前記粘着シールが貼着された他方の前記筒状フィルムの端部を挟み込んで、前記粘着シールと一方の前記筒状フィルムの挟込部とをヒートシールするようにしたことを特徴とする筒状フィルム接続方法。A tubular film connection method in which printed films are formed on the outer surface and the tubular films folded in a sheet shape are connected to each other,
In one tubular film to be connected, a pair of detachable sandwiching portions are formed in advance by cutting both side edges at the end portions in advance, and the other tubular film to be connected is , previously, that the end portion outer surface, leave the adhesive seal has an outer surface formed by the heat-sensitive adhesive layer adhered respectively,
The end of the other tubular film to which the adhesive seal is attached is sandwiched between the sandwiched portions formed on one of the tubular films, and the adhesive seal and one of the tubular films are sandwiched. A tubular film connecting method, wherein the part is heat-sealed. 内面に印刷層が形成された、シート状に折り畳まれた長尺帯状の筒状フィルムをロール状に巻回してなるフィルムロールであって、
前記筒状フィルムの一方の端部には、その両側縁を切り開くことによって形成された離反可能な一対の挟込部を有し、
前記挟込部の内面には、外表面が感熱接着剤層によって形成された粘着シールがそれぞれ貼着されていることを特徴とするフィルムロール。 A film roll formed by winding a long strip-shaped tubular film folded in a sheet shape with a printed layer formed on the inner surface ,
At one end of the tubular film, it has a pair of detachable sandwiching portions formed by opening both side edges thereof,
A film roll, wherein an adhesive seal whose outer surface is formed by a heat-sensitive adhesive layer is adhered to the inner surface of the sandwiched portion. 外面に印刷層が形成された、シート状に折り畳まれた長尺帯状の筒状フィルムをロール状に巻回してなるフィルムロールであって、
前記筒状フィルムの一方の端部には、その両側縁を切り開くことによって形成された離反可能な一対の挟込部を有し、
前記筒状フィルムの他方の端部の外面には、外表面が感熱接着剤層によって形成された粘着シールがそれぞれ貼着されていることを特徴とするフィルムロール。 It is a film roll formed by winding a long strip-shaped tubular film folded in a sheet shape with a printed layer formed on the outer surface ,
At one end of the tubular film, it has a pair of detachable sandwiching portions formed by opening both side edges thereof,
The film roll characterized by sticking the adhesion seal | sticker in which the outer surface was formed with the heat-sensitive adhesive layer, respectively on the outer surface of the other edge part of the said cylindrical film .
JP2002183374A 2002-06-24 2002-06-24 Cylindrical film connection method and film roll Expired - Fee Related JP3966773B2 (en)

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AT500126B1 (en) * 2003-11-04 2007-05-15 Deininger Karl Dipl Ing METHOD FOR REPLACING TUBE ROLLERS, ESPECIALLY FOR SIDE HOLDING HOSES
DE102005018546B4 (en) * 2005-04-20 2015-04-02 Windmöller & Hölscher Kg Device and method for connecting the ends of two flat tubular webs
JP4802851B2 (en) * 2006-05-15 2011-10-26 澁谷工業株式会社 Cylindrical label connection device
JP5075388B2 (en) * 2006-10-12 2012-11-21 サトーホールディングス株式会社 Strip sheet feeder
JP5577526B2 (en) * 2010-09-24 2014-08-27 高園テクノロジー株式会社 Wrapping paper connection device
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