JP2004202756A - Cooling device for resin welded part, infusion bag manufacturing apparatus equipped therewith and infusion bag manufacturing method - Google Patents

Cooling device for resin welded part, infusion bag manufacturing apparatus equipped therewith and infusion bag manufacturing method Download PDF

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Publication number
JP2004202756A
JP2004202756A JP2002372450A JP2002372450A JP2004202756A JP 2004202756 A JP2004202756 A JP 2004202756A JP 2002372450 A JP2002372450 A JP 2002372450A JP 2002372450 A JP2002372450 A JP 2002372450A JP 2004202756 A JP2004202756 A JP 2004202756A
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Prior art keywords
cooling
welding
infusion bag
container body
cooling device
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Inventor
Takao Okubo
卓男 大久保
Kenji Sasazawa
賢治 笹澤
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Showa Denko Plastic Products Co Ltd
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Showa Denko Plastic Products Co Ltd
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Priority to JP2002372450A priority Critical patent/JP2004202756A/en
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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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C66/01—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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • 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
    • B29C66/70—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing an infusion bag of high quality which does not cause the deformation of a cylindrical mouth member, the lowering of the welding strength of a welded part and the liquid leak due to welding failure, with good productivity, and a cooling device used in the method. <P>SOLUTION: The cooling device is used for cooling the welded part of a container main body comprising a resin film and the cylindrical mouth member made of a resin provided to the container main body and equipped with a cooling medium blowoff port 14 for blowing out a cooling medium toward the welded part. For example, the cooling device to be used is preferably equipped with a pair of cooling mold members 10 and 10 each of which is provided with a cavity 13 having the cooling medium blowoff ports 14 formed thereto for housing the welded part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、樹脂フィルムに筒状口部材を溶着した箇所の冷却に関するもので、特に薬液を収める輸液バッグの製造に関する。
【０００２】
【従来の技術】
患者に薬液を点滴する際などには、図６に示すような薬液が充填される輸液バッグ６０が使用されている。この輸液バッグ６０は、通常、薬液を保持する樹脂フィルム製の容器本体６１と、この容器本体６１に薬液を投入したり、または、容器本体６１から薬液を排出したりするための樹脂製の筒状口部材６２とを備えて構成されている。
【０００３】
このような輸液バッグ６０を製造する際には、まず、筒状フィルムを用意し、所望の長さに切断する。ついで、切断された両端部６３ａ，６３ｂを溶着することにより容器本体６１を形成するが、この際、図７に示すように一方の端部６３ａには、筒状口部材６２を溶着するための非溶着部６４を、筒状口部材６２の直径よりも幅広に残しておく。そして、この非溶着部６４に、所定温度に予備加熱された筒状口部材６２を挿入、配置した状態で、図８（ａ）、（ｂ）に示すように所定温度に加熱され、溶着される部分に沿う形状のキャビティ７０ａ，７０ａが形成された一対の加熱金型７０，７０で一定時間挟持し、容器本体６１と筒状口部材６２とを溶着させて溶着部６５を形成する溶着工程を行う。なお、この際、筒状口部材６２と容器本体６１とが確実に溶着するように、筒状口部材６２にあらかじめ図示略の溶着用のタブ（溶着しろ）を形成しておいてもよい（例えば、特許文献１参照）。
【０００４】
溶着工程を行った後、ついで溶着部６５を冷却する冷却工程を行うことにより、容器本体６１と筒状口部材６２とが接合した輸液バッグ６０が得られる。こうして、溶着工程後に冷却工程を行うことによって、一般に０．５〜３ｍｍ程度と肉厚であって溶着時の余熱により変形しやすい筒状口部材６２が変形したり、溶着部６５を形成する容器本体６１が薄肉化して溶着部６５の溶着強度が低下したり、溶着部６５の溶着不良により液漏れが発生したりすることを防止できる。
このような冷却工程には、通常、溶着工程で使用された加熱金型と同一の形状の一対の冷却金型が使用され、これで溶着部６５を挟持することにより行われている。
【０００５】
【特許文献１】
特許第２９４０９８７号公報
【０００６】
【発明が解決しようとする課題】
しかしながら、このように一対の冷却金型で溶着部を挟持し冷却工程を行う場合に、加熱金型で挟持した位置と冷却金型で挟持する位置とがずれてしまうと、溶着部を形成している容器本体の樹脂フィルムが薄肉化して、薬液を充填した時の落袋強度が低下したり、容器本体と筒状口部材との溶着不良により液漏れが生じたりする場合があった。
そのため冷却金型を使用した冷却工程においては、冷却金型での挟持位置と加熱金型での挟持位置とがずれないように、これらを高精度で合わせる必要があったが、多数の輸液バッグを連続的に生産する場合に、各輸液バッグについてこのような位置合わせを確実に行うことは非常に難しく、生産性にも影響を及ぼした。
【０００７】
本発明は上記事情に鑑みてなされたもので、筒状口部材の変形、溶着部における薬液を充填したときの落袋強度の低下、溶着不良による液漏れなどのない高品質の輸液バッグを生産性良く製造する方法と、この際に使用される冷却装置を提供することを課題とする。
【０００８】
【課題を解決するための手段】
本発明は、
（１）樹脂フィルムからなる容器本体と、該容器本体に設けられた樹脂製の筒状口部材との溶着部を冷却する冷却装置であって、冷媒を前記溶着部に向けて吹き出す冷媒吹出口を備えていることを特徴とする冷却装置である。
また、本発明は、
（２）前記溶着部を収容するキャビティが形成され、該キャビティに前記冷媒吹出口が形成された一対の冷却用型部材を具備することを特徴とする（１）に記載の冷却装置、
（３）前記冷媒吹出口は、穴状および／またはスリット状に形成されていることを特徴とする（１）または（２）に記載の冷却装置、
（４）前記冷媒吹出口は、前記冷媒が前記溶着部に対して３０〜９０°の角度で吹き付けられるように形成されていることを特徴とする（１）ないし（３）のいずれかに記載の冷却装置、である。
【０００９】
本発明は、
（５）樹脂フィルムからなる容器本体と、該容器本体に設けられた樹脂製の筒状口部材とを備えた輸液バッグの製造装置であって、前記容器本体と前記筒状口部材とを溶着する溶着装置と、（１）ないし（４）のいずれかに記載の冷却装置とを具備することを特徴とする輸液バッグの製造装置である。
また、本発明は、
（６）樹脂フィルムからなる容器本体と、該容器本体に設けられた樹脂製の筒状口部材とを備えた輸液バッグの製造方法であって、前記容器本体と前記筒状口部材とを溶着する溶着工程と、溶着された溶着部を冷却する冷却工程とを有し、 前記冷却工程は、前記溶着部に冷媒を吹き付けることを特徴とする輸液バッグの製造方法である。
【００１０】
【発明の実施の形態】
以下本発明について、図６に示した輸液バッグ６０を製造する場合を例示して説明する。
この輸液バッグ６０は、薬液を保持する樹脂フィルム製の容器本体６１と、この容器本体６１に薬液を投入したり、または、容器本体６１から薬液を排出したりするための樹脂からなる断面円形の筒状口部材６２とを具備している。
容器本体６１を構成する樹脂フィルムとしては、通常、ポリエチレン、ポリプロピレンなどのポリオレフィン系樹脂、塩化ビニル系樹脂、ポリエステル系樹脂、ポリアミド系樹脂などの１または２以上の樹脂からなる５０〜５００μｍ程度の厚みのものが使用される。また、樹脂フィルムは、これらの樹脂が複数積層された多層フィルムであってもよい。
筒状口部材６２を構成する樹脂としては特に制限はないが、少なくとも容器本体６１と溶着する部分には、溶着性が優れることから、容器本体６１に使用された樹脂フィルムと同じ種類の樹脂が使用されることが好ましい。また、周壁の厚みは、通常、０．５〜３ｍｍ程度である。
【００１１】
この輸液バッグ６０を製造する場合には、まず、インフレーション法などで製造された筒状フィルムを所望の長さに切断する。ついで、図７に示すように、一方の端部６３ａの中央に、後から筒状口部材６２を溶着するための非溶着部６４を残し、両端部６３ａ，６３ｂを溶着し、袋状とする。ここで筒状フィルムの両端部６３ａ，６３ｂを溶着し、袋状とする方法には制限はないが、例えば、所定温度に加熱された一対の加熱金型で筒状フィルム６１の両端部６３ａ，６３ｂを両側から所定時間挟持する方法などが挙げられる。
なお、ここでは、フィルムとして筒状フィルムを用いて袋状に成形する例を挙げたが、Ｔダイ成形または筒状フィルムを切り開いたフラットフィルムを使用し４方をシールとして袋状に成形してもよい。
ついで、図８（ａ）、（ｂ）に示すように、容器本体６１の非溶着部６４に、あらかじめ所定温度に予備加熱された筒状口部材６２を挿入、配置した状態で、これらを所定温度に加熱され、溶着される部分に沿う形状のキャビティ７０ａ，７０ａが形成された一対の加熱金型（溶着装置）７０，７０で所定時間挟持し、溶着させ、溶着部６５を形成する溶着工程を行う。
【００１２】
ここで加熱金型７０，７０の温度は、容器本体６１や筒状口部材６２の材質に応じて適宜設定できるが、通常、１１０〜２００℃とする。また、溶着時間は１〜３秒である。
なお、溶着工程は、所望の長さに切断した筒状フィルム６１の両端部６３ａ，６３ｂを溶着する際に、あらかじめ筒状口部材６２を所定位置に配置しておき、容器本体６１の両端部６３ａ，６３ｂの溶着と、容器本体６１と筒状口部材６２との溶着を、同時に行う方法でなされてもよい。
また、この際には、上記特許文献１に記載されているように、筒状口部材６２と容器本体６１とが確実に溶着するように、筒状口部材６２にあらかじめ図示略の溶着用のタブ（溶着しろ）を形成しておいてもよい。
【００１３】
こうして溶着工程を行った後、容器本体６１と筒状口部材６２との溶着部６５を冷却する冷却工程を行う。
図１は冷却工程に使用する一対の冷却用型部材のうちの一方１０のみを示す斜視図である。この冷却用型部材１０は、図１においては図示略の他方の同形の冷却用型部材と一対をなし、冷却装置として使用される。また、図２は、図１に示した冷却用型部材１０のキャビティ１３に、冷却対象である容器本体６１と筒状口部材６２との溶着部６５を配した状態を示すもので、図２においても他方の冷却用型部材の図示は略している。
【００１４】
図１の冷却用型部材１０には半円柱状のキャビティ１３が形成されていて、図示略の他方の冷却用型部材をこれに合わせた際には、円柱状の空間が形成され、図２に示すように冷却対象である筒状口部材６２と容器本体６１との溶着部６５がここに収容されるようになっている。
また、キャビティ１３は、一対の冷却用型部材１０，１０を合わせて溶着部６５を収容した際に、キャビティ１３と溶着部６５とが接触しないように、溶着部６５との間に好ましくは０．１〜５ｍｍ、さらに好ましくは０．１〜３ｍｍの隙間を有するように形成されている。キャビティ１３と溶着部６５との隙間が０．１ｍｍ未満であると、キャビティ１３と溶着部６５とが接触し、場合によっては溶着部６５が変形してしまう。一方、５ｍｍを超えると、後述するように冷媒を吹き付けた際に、キャビティ１３の内部で溶着部６５が振動し、溶着部６５を形成している容器本体６１が薄肉化して冷却工程を安定に行えず、薬液充填後の落袋強度が不十分となる場合がある。
なお、この例においては、筒状口部材６２が断面円形の円筒状であるので、キャビティ１３もこれに沿う円柱状となっているが、筒状口部材６２の断面が四角形などの多角形である場合には、キャビティ１３もこれに沿う角柱状に形成されることが好ましい。さらに筒状口部材６２の断面形状は楕円形、舟形などもあり、これらの形状にあわせたキャビティ１３の形状としてもよい。
【００１５】
そして、このキャビティ１３には、直径が０．５〜５ｍｍ程度の複数の円形の冷媒吹出口１４が形成されていて、この冷媒吹出口１４からは、図中符号１５で示される冷媒導入管から導入された冷媒が吹き出すようになっている。
ここで、冷媒吹出口１４の直径には制限はなく、筒状口部材６２の大きさなどに応じて適宜設定できるが、直径が０．５ｍｍ未満では、冷却効果が十分ではなく冷却に長時間を要する場合があり、５ｍｍを超えると、冷媒を吹き付けた際にキャビティ１３の内部で溶着部６５が振動し、溶着部６５を形成している容器本体６１が薄肉化して溶着部６５の冷却工程を安定に行えず、薬液充填後の落袋強度が不十分となる場合がある。また、キャビティ１３に形成される冷媒吹出口１４の数には制限はないが、一方の冷却用型部材１０について、３〜１０個程度が好ましく、筒状口部材６２の長さ方向に２〜５段で形成されることが好ましい。このような個数、段数であると、冷媒吹出口１４の直径などにもよるが、効果的に冷却でき、冷却吹出口１４の形成にも手間がかからない。
【００１６】
また、この例において冷媒吹出口１４は、図３の断面図に示すように、筒状口部材６２の長さ方向に対して４５°の角度で冷媒が吹き出すように斜めに形成されている。このように、溶着部６５に対して斜めに冷媒が吹き付けられると、吹き付けられた後の冷媒が一方向（図３においては下向きの矢印方向）に流れ、流れが安定し、冷却工程における溶着部６５の振動が抑制される。なお、冷媒吹出口１４は、冷媒が溶着部６５に対して必ずしも斜めに吹き付けられるように形成される必要はなく、９０°に吹き付けられるように形成されていてもよい。また、斜めである場合には、その下限が３０°であることが好ましい。３０°未満であると、溶着部６５に十分に冷媒が当たらず冷却が不十分となり、冷却に長時間を要する可能性が生じる。なお、この例においては、冷媒が図３中下向きに流れるようになっているが、上向きに流れるようになっていてもよい。
【００１７】
また、この例の冷却用型部材１０は、型部材本体１１と、この型部材本体１１に嵌め込まれた冷却部材１２とから概略構成されていて、冷却部材１２は型部材本体１１に着脱自在となっている。そして、キャビティ１３は型部材本体１１と冷却部材１２とに跨って形成されているが、冷媒吹出口１４は冷却部材１２にのみ形成されている。このように冷媒吹出口１４が形成された冷却部材１２が、型部材本体１１に対して着脱自在となっていると、詳しくは後述するように、冷媒吹出口１４の数、形状などが異なる冷却部材１２を複数用意しておき、筒状口部材６２の大きさなどに応じて適宜選択して型部材本体１１に装着し、使用することもできる。型部材本体１１と冷却部材１２の材質には制限はないが、型部材本体１１には軽量であり伝熱性の良好なアルミニウムなどの金属が使用され、冷却部材１２には耐久性の優れたステンレスなどの耐食材料が使用される。
【００１８】
このような冷却用型部材１０を使用して、容器本体６１と筒状口部材６２との溶着部６５を冷却する際には、図４に示すように、溶着工程により溶着された容器本体６１と筒状口部材６２とを、一対の冷却用型部材１０、１０で両側から挟み、キャビティ１３内に溶着部６５を収容する。この際、容器本体６１の図中上部側は、冷却用型部材１０，１０におけるキャビティ１３以外の平面部分に挟持されるので、容器本体６１と筒状口部材６２との溶着部６５は、キャビティ１３と接触せず間隔を有していても、所定の位置に安定に保持される。
このように溶着部６５をキャビティ１３内に収容した後、冷媒導入管１５から冷媒を導入することにより冷媒吹出口１４から冷媒が吹き出し、溶着部６５が冷却される。
ここで冷媒としては、空気、窒素、二酸化炭素などの気体の他、水などの液体を使用してもよいが、安価で、取り扱いが容易で、冷却工程後の後処理が不要であることから、空気を使用することが好ましい。また、冷媒の温度は適宜設定できるが、室温〜０℃が適切である。また、冷媒を溶着部６５に吹き付ける時間、量なども適宜設定できる。
【００１９】
なお、冷却部材１２として、図５に示すように冷媒吹出口１４が筒状口部材６２の周方向に延びるスリット状に形成されたものを使用し、これを型部材本体１１に装着して冷却用型部材１１としてもよい。
冷媒吹出口であるスリットの幅、本数などは、筒状口部材６２の大きさなどに応じて適宜設定できるが、幅０．３〜５ｍｍの範囲が好ましい。幅が０．３ｍｍ未満では、冷却効果が十分ではなく、冷却に長時間を要す場合があり、５ｍｍを超えると、冷媒を吹き付けた際にキャビティ１３の内部で溶着部６５が振動し、冷却工程を安定に行えない場合が生じる。また、本数は、一方の冷却用型部材１０について、２〜５本程度が好ましくい。このような幅、本数であると、効果的に冷却でき、冷却吹出口１４の形成にも手間がかからない。
また、冷媒吹出口１４が穴状である場合においても、図１のような円形に限定されず、多角形などであってもよい。
【００２０】
このように樹脂フィルムからなる容器本体６１と、この容器本体６１に形成された樹脂製の筒状口部材６２との溶着部６５を冷却する冷却工程を、冷媒を溶着部６５に向けて吹き付ける方法で行うことによって、一対の冷却金型で溶着部６５を挟持して冷却する従来の方法のように、冷却金型での挟持位置を加熱金型での挟持位置に厳密に合わせるなどの手間をかけることなく、筒状口部材６２の変形、溶着部６５の溶着強度の低下、溶着不良による液漏れなどのない高品質な輸液バッグ６０を製造することができる。よって、このような方法によれば、高品質の輸液バッグ６０を多数、生産性よく製造できる。
また、冷却工程に際して、溶着部６５を収容するキャビティ１３が形成され、このキャビティ１３に冷媒吹出口１４が形成された一対の冷却用型部材１０、１０を具備する冷却装置を使用することにより、多数の輸液バッグ６０を製造する際に、簡単な方法で、各輸液バッグ６０の溶着部６５に対してムラなく均一に冷媒を吹き付けることができ、より生産性が優れる。
【００２１】
【発明の効果】
以上説明したように本発明によれば、筒状口部材の変形、溶着部の溶着強度の低下、溶着不良による液漏れなどのない高品質の輸液バッグを生産性良く製造することができる。
【図面の簡単な説明】
【図１】本発明の冷却装置の一実施形態である一対の冷却用型部材のうち、一方を示す斜視図である。
【図２】図１の冷却用型部材の所定位置に容器本体と筒状口部材の溶着部を配置した状態を示す（ａ）斜視図と、（ｂ）正面図である。
【図３】図１の冷却用型部材の所定位置に容器本体と筒状口部材の溶着部を配置した状態を示す断面図である。
【図４】図１の冷却用型部材を一対で使用して、容器本体と筒状口部材の溶着部を冷却する冷却工程を示す斜視図である。
【図５】本発明の冷却装置の他の実施形態である一対の冷却用型部材のうち、一方を示す斜視図である。
【図６】輸液バッグの一例を示す正面図である。
【図７】図６の輸液バッグの製造工程を説明する説明図である。
【図８】図６の輸液バッグの製造工程を説明する説明図である。
【符号の説明】
１０ 冷却用型部材
１３ キャビティ
１４ 冷媒吹出口
６１ 容器本体
６２ 筒状口部材
６５ 溶着部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to cooling of a portion where a cylindrical mouth member is welded to a resin film, and more particularly to manufacturing of an infusion bag for containing a chemical solution.
[0002]
[Prior art]
When injecting a drug solution into a patient, an infusion bag 60 filled with the drug solution as shown in FIG. 6 is used. The infusion bag 60 is usually made of a resin film-made container main body 61 for holding a chemical solution, and a resin cylinder for putting a chemical solution into the container main body 61 or discharging a chemical solution from the container main body 61. And a mouth member 62.
[0003]
When manufacturing such an infusion bag 60, first, a tubular film is prepared and cut into a desired length. Next, the container body 61 is formed by welding the cut end portions 63a and 63b. At this time, as shown in FIG. 7, one end 63a is used to weld the cylindrical mouth member 62. The non-welded portion 64 is left wider than the diameter of the cylindrical mouth member 62. Then, in a state where the cylindrical mouth member 62 preheated to a predetermined temperature is inserted and arranged in the non-welded portion 64, the cylindrical mouth member 62 is heated to a predetermined temperature as shown in FIGS. Welding process in which a pair of heating dies 70, 70 having cavities 70a, 70a formed along the portions to be formed are held for a certain period of time, and the container body 61 and the cylindrical mouth member 62 are welded to form a welding portion 65. I do. At this time, an unillustrated welding tab (welding margin) may be formed on the cylindrical opening member 62 in advance so that the cylindrical opening member 62 and the container main body 61 are reliably welded to each other. For example, see Patent Document 1).
[0004]
After performing the welding step, a cooling step of cooling the welded portion 65 is performed to obtain the infusion bag 60 in which the container body 61 and the cylindrical mouth member 62 are joined. By performing the cooling step after the welding step in this manner, the cylindrical mouth member 62 which is generally thick and has a thickness of about 0.5 to 3 mm and is easily deformed by the residual heat at the time of welding, or a container for forming the welded portion 65 It is possible to prevent the main body 61 from being thinned, thereby reducing the welding strength of the welding portion 65, and preventing liquid leakage due to poor welding of the welding portion 65.
In such a cooling step, a pair of cooling molds having the same shape as the heating mold used in the welding step is usually used, and the cooling section is held by sandwiching the welding portion 65.
[0005]
[Patent Document 1]
Japanese Patent No. 2940987
[Problems to be solved by the invention]
However, when the cooling step is performed by sandwiching the welded portion between the pair of cooling dies as described above, if the position sandwiched by the heating mold and the position sandwiched by the cooling mold are shifted, the welded portion is formed. In some cases, the thickness of the resin film of the container body becomes thinner, the dropping strength at the time of filling with a chemical solution is reduced, or liquid leakage occurs due to poor welding between the container body and the cylindrical mouth member.
Therefore, in the cooling process using the cooling mold, it was necessary to match these positions with high precision so that the holding position in the cooling mold and the holding position in the heating mold did not shift. It is very difficult to reliably perform such alignment for each infusion bag when continuously producing the infusion bags, which also affected productivity.
[0007]
The present invention has been made in view of the above circumstances, and produces a high-quality infusion bag which is free from deformation of a cylindrical mouth member, reduced bag drop strength when a chemical solution is filled in a welding portion, and liquid leakage due to poor welding. It is an object of the present invention to provide a method of manufacturing with good performance and a cooling device used at this time.
[0008]
[Means for Solving the Problems]
The present invention
(1) A cooling device for cooling a welded portion between a container main body made of a resin film and a resin-made cylindrical port member provided in the container main body, wherein a refrigerant outlet for blowing a refrigerant toward the welded portion. It is a cooling device characterized by comprising:
Also, the present invention
(2) The cooling device according to (1), wherein a cavity for accommodating the welding portion is formed, and the cavity includes a pair of cooling mold members in which the refrigerant outlet is formed.
(3) The cooling device according to (1) or (2), wherein the refrigerant outlet is formed in a hole shape and / or a slit shape.
(4) The refrigerant outlet is formed so that the refrigerant is blown at an angle of 30 to 90 ° to the welded part, wherein the refrigerant is blown at an angle of 30 to 90 °. Cooling device.
[0009]
The present invention
(5) An apparatus for manufacturing an infusion bag, comprising: a container body made of a resin film; and a resin-made cylindrical mouth member provided in the container body, wherein the container body and the tubular mouth member are welded to each other. An infusion bag manufacturing device, comprising: a welding device to be used; and the cooling device according to any one of (1) to (4).
Also, the present invention
(6) A method for manufacturing an infusion bag comprising a container body made of a resin film and a resin-made cylindrical mouth member provided on the container body, wherein the container body and the tubular mouth member are welded to each other. And a cooling step of cooling the welded portion. The cooling step is a method of manufacturing an infusion bag, wherein a coolant is blown to the welded portion.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described by exemplifying a case where the infusion bag 60 shown in FIG. 6 is manufactured.
The infusion bag 60 has a container main body 61 made of a resin film that holds a chemical solution, and a resin having a circular cross section made of a resin for putting a chemical solution into the container main body 61 or discharging a chemical solution from the container main body 61. And a cylindrical mouth member 62.
The thickness of the resin film constituting the container body 61 is usually about 50 to 500 μm, which is made of one or two or more resins such as a polyolefin resin such as polyethylene and polypropylene, a vinyl chloride resin, a polyester resin and a polyamide resin. Is used. Further, the resin film may be a multilayer film in which a plurality of these resins are laminated.
The resin constituting the cylindrical mouth member 62 is not particularly limited, but at least a portion to be welded to the container body 61 has excellent welding properties, and therefore, the same type of resin as the resin film used for the container body 61 is used. It is preferably used. The thickness of the peripheral wall is usually about 0.5 to 3 mm.
[0011]
When manufacturing the infusion bag 60, first, a tubular film manufactured by an inflation method or the like is cut into a desired length. Then, as shown in FIG. 7, a non-welded portion 64 for welding the tubular mouth member 62 is left behind at the center of one end 63a, and both ends 63a and 63b are welded to form a bag. . Here, the method of welding both ends 63a and 63b of the cylindrical film to form a bag is not limited. For example, both ends 63a and 63b of the cylindrical film 61 are heated by a pair of heating dies heated to a predetermined temperature. 63b from both sides for a predetermined time.
Here, an example in which the film is formed into a bag using a tubular film as the film has been described. However, a T-die molding or a flat film obtained by cutting the tubular film is used, and the four sides are formed into a bag as a seal. Is also good.
Next, as shown in FIGS. 8 (a) and 8 (b), the cylindrical mouth member 62 preheated to a predetermined temperature is inserted and arranged in the non-welded portion 64 of the container main body 61, and these are placed in a predetermined position. A welding process in which a pair of heating dies (welding devices) 70, 70 formed with cavities 70 a, 70 a, which are heated to a temperature and formed in a shape along the portions to be welded, are held for a predetermined time and welded to form a welded portion 65. I do.
[0012]
Here, the temperature of the heating molds 70, 70 can be appropriately set according to the material of the container body 61 and the cylindrical mouth member 62, but is usually 110 to 200 ° C. The welding time is 1 to 3 seconds.
In the welding step, when welding both ends 63a and 63b of the tubular film 61 cut to a desired length, the tubular mouth member 62 is previously arranged at a predetermined position, and both ends of the container main body 61 are placed. The welding of 63a and 63b and the welding of the container body 61 and the cylindrical mouth member 62 may be performed simultaneously.
In this case, as described in Patent Document 1, welding (not shown) is performed on the cylindrical mouth member 62 in advance so that the cylindrical mouth member 62 and the container body 61 are securely welded to each other. A tab (welding margin) may be formed in advance.
[0013]
After performing the welding step in this way, a cooling step of cooling the welded portion 65 between the container body 61 and the cylindrical mouth member 62 is performed.
FIG. 1 is a perspective view showing only one of a pair of cooling mold members 10 used in the cooling step. This cooling mold member 10 forms a pair with another cooling mold member of the same shape, not shown in FIG. 1, and is used as a cooling device. FIG. 2 shows a state in which a welded portion 65 between a container body 61 to be cooled and a cylindrical mouth member 62 is arranged in the cavity 13 of the cooling mold member 10 shown in FIG. Also, the illustration of the other cooling mold member is omitted.
[0014]
The cooling mold member 10 shown in FIG. 1 has a semi-cylindrical cavity 13 formed therein. When the other cooling mold member (not shown) is fitted to the cavity 13, a cylindrical space is formed. As shown in FIG. 7, a welded portion 65 between the cylindrical mouth member 62 to be cooled and the container body 61 is accommodated here.
The cavity 13 is preferably located between the welding portion 65 and the welding portion 65 so that the cavity 13 does not come into contact with the welding portion 65 when the pair of cooling mold members 10 and 10 are put together to accommodate the welding portion 65. It is formed so as to have a gap of 0.1 to 5 mm, more preferably 0.1 to 3 mm. If the gap between the cavity 13 and the welded portion 65 is less than 0.1 mm, the cavity 13 comes into contact with the welded portion 65, and in some cases, the welded portion 65 is deformed. On the other hand, if it exceeds 5 mm, when the refrigerant is blown as described later, the welded portion 65 vibrates inside the cavity 13, the container body 61 forming the welded portion 65 becomes thinner, and the cooling process is stabilized. In some cases, the dropping strength after filling with the chemical solution may be insufficient.
In this example, since the cylindrical mouth member 62 has a cylindrical shape with a circular cross section, the cavity 13 also has a columnar shape along this. However, the cross section of the cylindrical mouth member 62 is a polygon such as a quadrangle. In some cases, it is preferable that the cavity 13 is also formed in a prismatic shape along the cavity. Further, the cross-sectional shape of the cylindrical mouth member 62 may be elliptical, boat-shaped, or the like, and the shape of the cavity 13 may be adapted to these shapes.
[0015]
A plurality of circular refrigerant outlets 14 having a diameter of about 0.5 to 5 mm are formed in the cavity 13, and from the refrigerant outlet 14, a refrigerant introduction pipe indicated by reference numeral 15 in the drawing is formed. The introduced refrigerant blows out.
Here, the diameter of the refrigerant outlet 14 is not limited, and can be appropriately set according to the size of the cylindrical mouth member 62. However, if the diameter is less than 0.5 mm, the cooling effect is not sufficient and cooling takes a long time. If it exceeds 5 mm, the welded portion 65 vibrates inside the cavity 13 when the refrigerant is blown, and the container body 61 forming the welded portion 65 is thinned, and the cooling process of the welded portion 65 is performed. Cannot be performed stably, and the dropping strength after filling with the chemical solution may be insufficient. Further, the number of the refrigerant outlets 14 formed in the cavity 13 is not limited, but it is preferable that one of the cooling mold members 10 is about 3 to 10 pieces, Preferably, it is formed in five steps. With such a number and the number of stages, cooling can be performed effectively depending on the diameter and the like of the refrigerant outlet 14, and the formation of the cooling outlet 14 does not require much trouble.
[0016]
In this example, as shown in the cross-sectional view of FIG. 3, the refrigerant outlet 14 is formed obliquely so that the refrigerant blows out at an angle of 45 ° with respect to the length direction of the cylindrical mouth member 62. As described above, when the refrigerant is blown obliquely to the welded portion 65, the blown refrigerant flows in one direction (a downward arrow direction in FIG. 3), the flow is stabilized, and the welded portion in the cooling step is cooled. 65 is suppressed. The refrigerant outlet 14 does not necessarily need to be formed so that the refrigerant is blown obliquely to the welding portion 65, and may be formed so as to be blown at 90 °. In the case of being oblique, the lower limit is preferably 30 °. When the angle is less than 30 °, the coolant does not sufficiently hit the welded portion 65 and cooling is insufficient, and there is a possibility that cooling takes a long time. In this example, the refrigerant flows downward in FIG. 3, but it may flow upward.
[0017]
Further, the cooling mold member 10 of this example is schematically composed of a mold member main body 11 and a cooling member 12 fitted into the mold member main body 11, and the cooling member 12 is detachably attached to the mold member main body 11. Has become. The cavity 13 is formed over the mold member main body 11 and the cooling member 12, but the refrigerant outlet 14 is formed only on the cooling member 12. When the cooling member 12 in which the refrigerant outlets 14 are formed is detachable from the mold member main body 11, as described later in detail, the number and the shape of the cooling outlets 14 differ from each other. A plurality of members 12 may be prepared, appropriately selected according to the size of the cylindrical mouth member 62, etc., mounted on the mold member main body 11, and used. The material of the mold member body 11 and the cooling member 12 is not limited, but a metal such as aluminum which is lightweight and has good heat conductivity is used for the mold member body 11 and the cooling member 12 is made of stainless steel having excellent durability. Corrosion resistant materials such as are used.
[0018]
When cooling the welded portion 65 between the container body 61 and the cylindrical mouth member 62 by using such a cooling mold member 10, as shown in FIG. 4, the container body 61 welded by the welding step is cooled. The cylindrical mouth member 62 is sandwiched between the pair of cooling mold members 10 and 10 from both sides, and the welded portion 65 is accommodated in the cavity 13. At this time, the upper side of the container main body 61 in the figure is sandwiched between flat portions other than the cavity 13 in the cooling mold members 10, 10, so that the welded portion 65 between the container main body 61 and the cylindrical mouth member 62 is Even if there is an interval without contacting with the reference numeral 13, it is stably held at a predetermined position.
After the welding portion 65 is accommodated in the cavity 13 as described above, the refrigerant is blown out from the refrigerant outlet 14 by introducing the refrigerant from the refrigerant introduction pipe 15, and the welding portion 65 is cooled.
Here, in addition to gases such as air, nitrogen and carbon dioxide, liquids such as water may be used as the refrigerant, but they are inexpensive, easy to handle, and do not require post-treatment after the cooling step. Preferably, air is used. In addition, the temperature of the refrigerant can be set as appropriate, but is suitably from room temperature to 0 ° C. Further, the time and amount of blowing the refrigerant to the welding portion 65 can be appropriately set.
[0019]
As the cooling member 12, as shown in FIG. 5, a coolant outlet 14 formed in a slit shape extending in the circumferential direction of the cylindrical mouth member 62 is used. The mold member 11 may be used.
The width and number of the slits, which are the refrigerant outlets, can be appropriately set according to the size of the cylindrical port member 62 and the like, but the width is preferably in the range of 0.3 to 5 mm. If the width is less than 0.3 mm, the cooling effect is not sufficient and cooling may take a long time. If the width is more than 5 mm, the welded portion 65 vibrates inside the cavity 13 when the refrigerant is blown, and the cooling is performed. In some cases, the process cannot be performed stably. The number is preferably about 2 to 5 for one cooling mold member 10. With such a width and the number, the cooling can be performed effectively, and the formation of the cooling air outlet 14 does not require much trouble.
Further, even when the refrigerant outlet 14 is in the shape of a hole, the shape is not limited to a circle as shown in FIG. 1 and may be a polygon or the like.
[0020]
The cooling step of cooling the welded portion 65 between the container main body 61 made of the resin film and the resin-made cylindrical opening member 62 formed on the container main body 61 includes a method of blowing a refrigerant toward the welded portion 65. In this way, as in the conventional method in which the welding portion 65 is sandwiched and cooled by a pair of cooling dies, time and effort such as strictly adjusting the clamping position in the cooling mold to the clamping position in the heating mold. It is possible to manufacture a high-quality infusion bag 60 that does not cause deformation of the cylindrical mouth member 62, lowering of the welding strength of the welding portion 65, and liquid leakage due to poor welding. Therefore, according to such a method, many high-quality infusion bags 60 can be manufactured with high productivity.
Further, in the cooling step, a cavity 13 for accommodating the welding portion 65 is formed, and by using a cooling device including a pair of cooling mold members 10 and 10 in which the coolant outlet 14 is formed in the cavity 13, When a large number of infusion bags 60 are manufactured, the refrigerant can be sprayed evenly and uniformly on the welded portion 65 of each infusion bag 60 by a simple method, and the productivity is further improved.
[0021]
【The invention's effect】
As described above, according to the present invention, a high-quality infusion bag can be manufactured with high productivity without deformation of the cylindrical mouth member, reduction in the welding strength of the welded portion, and liquid leakage due to poor welding.
[Brief description of the drawings]
FIG. 1 is a perspective view showing one of a pair of cooling mold members according to an embodiment of the cooling device of the present invention.
FIGS. 2A and 2B are a perspective view and a front view, respectively, showing a state in which a welded portion of a container body and a cylindrical mouth member is arranged at a predetermined position of a cooling mold member of FIG.
FIG. 3 is a cross-sectional view showing a state where a welded portion between a container body and a cylindrical mouth member is arranged at a predetermined position of a cooling mold member of FIG. 1;
FIG. 4 is a perspective view showing a cooling step of cooling the welded portion between the container body and the cylindrical mouth member by using a pair of cooling mold members of FIG. 1;
FIG. 5 is a perspective view showing one of a pair of cooling mold members according to another embodiment of the cooling device of the present invention.
FIG. 6 is a front view showing an example of an infusion bag.
FIG. 7 is an explanatory view illustrating a manufacturing process of the infusion bag of FIG. 6;
FIG. 8 is an explanatory view illustrating a manufacturing process of the infusion bag of FIG. 6;
[Explanation of symbols]
Reference Signs List 10 Cooling mold member 13 Cavity 14 Refrigerant outlet 61 Container main body 62 Cylindrical mouth member 65 Welding part

Claims (6)

樹脂フィルムからなる容器本体と、該容器本体に設けられた樹脂製の筒状口部材との溶着部を冷却する冷却装置であって、
冷媒を前記溶着部に向けて吹き出す冷媒吹出口を備えていることを特徴とする冷却装置。A container body made of a resin film, and a cooling device that cools a welded portion of a resin cylindrical port member provided in the container body,
A cooling device comprising a refrigerant outlet for blowing a refrigerant toward the welding portion. 前記溶着部を収容するキャビティが形成され、該キャビティに前記冷媒吹出口が形成された一対の冷却用型部材を具備することを特徴とする請求項１に記載の冷却装置。The cooling device according to claim 1, further comprising a pair of cooling mold members each having a cavity for accommodating the welding portion, and having the coolant outlet formed in the cavity. 前記冷媒吹出口は、穴状および／またはスリット状に形成されていることを特徴とする請求項１または２に記載の冷却装置。The cooling device according to claim 1, wherein the refrigerant outlet is formed in a hole shape and / or a slit shape. 前記冷媒吹出口は、前記冷媒が前記溶着部に対して３０〜９０°の角度で吹き付けられるように形成されていることを特徴とする請求項１ないし３のいずれかに記載の冷却装置。4. The cooling device according to claim 1, wherein the refrigerant outlet is formed so that the refrigerant is blown at an angle of 30 to 90 ° to the welded part. 5. 樹脂フィルムからなる容器本体と、該容器本体に設けられた樹脂製の筒状口部材とを備えた輸液バッグの製造装置であって、
前記容器本体と前記筒状口部材とを溶着する溶着装置と、請求項１ないし４のいずれかに記載の冷却装置とを具備することを特徴とする輸液バッグの製造装置。A container body made of a resin film, and a device for manufacturing an infusion bag including a resin cylindrical mouth member provided in the container body,
An apparatus for manufacturing an infusion bag, comprising: a welding device for welding the container body and the tubular mouth member; and the cooling device according to claim 1. 樹脂フィルムからなる容器本体と、該容器本体に設けられた樹脂製の筒状口部材とを備えた輸液バッグの製造方法であって、
前記容器本体と前記筒状口部材とを溶着する溶着工程と、溶着された溶着部を冷却する冷却工程とを有し、
前記冷却工程は、前記溶着部に冷媒を吹き付けることを特徴とする輸液バッグの製造方法。A container body made of a resin film, and a method of manufacturing an infusion bag including a resin-made cylindrical mouth member provided in the container body,
A welding step of welding the container body and the cylindrical mouth member, and a cooling step of cooling the welded portion welded,
The method of manufacturing an infusion bag, wherein the cooling step sprays a coolant on the welding portion.
JP2002372450A 2002-12-24 2002-12-24 Cooling device for resin welded part, infusion bag manufacturing apparatus equipped therewith and infusion bag manufacturing method Withdrawn JP2004202756A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006204610A (en) * 2005-01-28 2006-08-10 Terumo Corp Method for manufacturing medical container, medical container, and device for heat sealing
WO2010058052A1 (en) * 2008-11-18 2010-05-27 Volpak, S.A.U. Method and device for the heat welding sealing the side walls of a flexible pack to the support body of a spout
CN115891288A (en) * 2022-12-06 2023-04-04 嘉兴市天和制药有限公司 Continuous production equipment and method for platelet storage bags
CN115891288B (en) * 2022-12-06 2024-05-17 嘉兴市天和制药有限公司 Continuous production equipment and method for platelet storage bags

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006204610A (en) * 2005-01-28 2006-08-10 Terumo Corp Method for manufacturing medical container, medical container, and device for heat sealing
JP4555102B2 (en) * 2005-01-28 2010-09-29 テルモ株式会社 Manufacturing method of medical container
WO2010058052A1 (en) * 2008-11-18 2010-05-27 Volpak, S.A.U. Method and device for the heat welding sealing the side walls of a flexible pack to the support body of a spout
CN115891288A (en) * 2022-12-06 2023-04-04 嘉兴市天和制药有限公司 Continuous production equipment and method for platelet storage bags
CN115891288B (en) * 2022-12-06 2024-05-17 嘉兴市天和制药有限公司 Continuous production equipment and method for platelet storage bags

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