JP2791387B2 - 輸液用バッグおよびその製造方法 - Google Patents

輸液用バッグおよびその製造方法

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Publication number
JP2791387B2
JP2791387B2 JP1184320A JP18432089A JP2791387B2 JP 2791387 B2 JP2791387 B2 JP 2791387B2 JP 1184320 A JP1184320 A JP 1184320A JP 18432089 A JP18432089 A JP 18432089A JP 2791387 B2 JP2791387 B2 JP 2791387B2
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Japan
Prior art keywords
opening
cylindrical body
hollow cylindrical
hollow
protruding portion
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JP1184320A
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English (en)
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JPH0349762A (ja
Inventor
恒之 石渡
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株式会社ミドリ十字
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Classifications

    • 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
    • B29C66/53263—Enclosing spouts between the walls of bags, e.g. of medical bags said spouts comprising wings, e.g. said spouts being of ship-like or canoe-like form to avoid leaks in the corners
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/326—Shaping the burr, e.g. by the joining tool
    • 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
    • B29C66/70—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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B29C66/73521—Thickness, e.g. very thin of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness of the other part
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • B29C65/1422—Far-infrared radiation [FIR]
    • 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
    • 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
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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

Landscapes

  • 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)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、輸液用バッグの新規な製造方法に関する。
〔従来の技術・発明が解決しようとする課題〕
第４図に示すように輸液用バッグＢには、輸液取出口
としての開口部10に栓をするために栓取付部である中空
筒体（ポート部）11を開口部10に挿入し、開口部10と筒
体11を熱シール、高周波シールなどによって融着し、筒
体11の上端面に注射針などを差し込むための栓９を取付
けたものがある。
この種のバッグは、例えば第５図に示すように、熱可
塑性プラスチックシート20の開口部に空洞23を有する円
柱状の中空筒体21を融着したものでは、プラスチックシ
ート20の合せ目22の部分がシール不良を起こし易い。す
なわち、合せ目22の部分に隙間（もしくはピンホール）
30が生じ易い。隙間30ができると、バッグ内の輸液が外
に漏洩したり、または隙間30から細菌などの異物が輸液
に混入し、輸液が汚染されたりするので甚だ好ましくな
い。
これを解決するために、第６図に示す如く隙間30を埋
めるよう筒体21に突出部25を設けたもの、第７図に示す
如く筒体21とプラスチックシート20のシール面積を増加
するよう筒体21を楕円形状にしたもの、或いは第８図に
示す如く筒体21を船形に形成し、その側面部27にプラス
チックシートの開口部を溶着シールしたものもあるが、
いずれも却ってシール条件が悪くなり、筒体とプラスチ
ックシートを完全に密着シートすることは困難であり、
シール不良を起こして合せ目22（第８図では側縁28）の
箇所に隙間が生じることがある。従って、これらは上策
とは言い難い。
従って本発明の目的は中空筒体とバッグ開口部とのシ
ールの完全性を高めることができる輸液用バッグの製造
方法を提供することにある。
〔課題を解決するための手段〕
前記目的は、中空筒体の外層部が容易に変形できる
程度にまで該中空筒体を加熱し、中空筒体を本体の開口
部で包囲し、中空筒体と開口部とを金型で押圧すると共
に、中空筒体の外層部と開口部とを溶着する工程を有す
る製造方法、並びに中空筒体の外周面において中空筒
体を垂直軸方向に二分する対称位置に突出部を設け、突
出部が容易に変形できる程度にまで該突出部を加熱し、
突出部を含む中空筒体を本体の開口部で包囲し、突出部
を含む中空筒体と開口部とを金型で押圧すると共に、突
出部及び中空筒体の外層部と開口部とを溶着する工程を
有する製造方法により達成される。
すなわち、本発明の製造方法は、特に輸液用バッグの
開口部のシール工程において中空筒体と開口部とを密着
シールする前に、上記の方法では筒体の外層部、の
方法では筒体に設けた突出部を容易に変形され得る程度
にまで予備加熱し、外層部または突出部を柔軟にしてか
ら、中空筒体と開口部とを金型で押圧すると共に、両者
を例えば熱、超音波などにより発熱させて相互に溶着す
ることを特徴とする。
本発明の製造方法において、輸液用バッグの本体自体
の製造法には特に制限はなく、常套手段で十分であり、
例えば熱板シール、インパルスシールなどにより中空筒
体を取付ける開口部を確保できる形状（チューブ状、袋
状など）に形成する。
なお、上記の方法においては、予備加熱時に中空筒
体が変形する危険性がある場合には、中空筒体内に筒体
の形状を保持するための補強部材を挿入しておくことが
好ましい。
〔実施例〕
以下、本発明の輸液用バッグの製造方法を実施例に基
づいて説明する。
第１図は本発明の製造方法によって作製した輸液用バ
ッグの開口部を示し、特にその特徴である開口部のシー
ル工程によって密着シールした中空筒体１と本体の開口
部10とを示す。図の実施例では、中空筒体１に突出部３
を設けた前記の方法によるもので、開口部シート10と
突出部３との合せ目５は隙間が生じない程堅固に密着シ
ールされている。なお、中空筒体１には栓９が取付けら
れている。
次に、上記バッグＢの製造方法の一例をシール工程を
中心にして第２図（ａ）〜（ｃ）につき述べる。
まず、袋状に形成された本体を上例の既知方法で作製
する。次に、円柱状中空筒体１の外周面において該筒体
を垂直軸方向に二分する対称位置に設けた円柱状突出部
３を、後の金型成形時に容易に変形され得る程度にまで
遠赤外線ヒータ、熱風ヒータ、オーブンなどによって予
備加熱し、突出部３を軟弱にする〔第２図（ａ）参
照〕。そして、柔軟状態の突出部３及び中空筒体１の外
周に開口部シート10を当接する〔第２図（ｂ）参照〕。
その後、所定の成形型を有する金型50で中空筒体１と開
口部とを押圧すると共に突出部３を（ｃ）に示す如き形
状に成形しながら、金型50に超音波もしくは熱を加える
ことにより成形突出部３及び中空筒体１の外層部とシー
ト10とを相互に溶着する〔第２図（ｃ）参照〕。シート
10に中空筒体１を取付けた後、筒体１の中空部から所定
量の輸液をバッグＢ内に注入し、最後に中空筒体１の上
端面に栓９の下端面を熱融着し、筒体１を閉塞すること
により、バッグＢが製造される。
このように本発明の製造方法におけるシール工程で
は、共に柔軟状態である突出部３とシート10とをシール
するので筒体１とシート10との合せ目に無理な力が加わ
らず、そのため合せ目におけるシートの厚さも薄くなら
ず、結果として合せ目に隙間やピンホールが生じ難くな
る。
なお、突出部３を金型50で成形した時の形状は図示し
たもの以外であってもよく、例えば第３図（ａ）に示す
ようなくさび形横断面３′、または（ｂ）の如きひし形
横断面３″に成形しても構わず、その成形型を有する金
型を使用すればよい。
上記実施例では、中空筒体に突出部を設けてある場合
の製造方法の説明であるが、突出部を有しない場合の
製造方法については、前記の方法とほぼ同様に行え
ばよいが、相違点のみを次に述べる。
すなわちの製造方法では、予備加熱するのが中空筒
体の外層部であると共に、予備加熱時に必要に応じて中
空筒体が変形しないように筒体内に補強部材を挿入して
おき、また金型での押圧時に筒体を成形せず、筒体とシ
ートとを密着シールするだけであることが異なる。
〔発明の効果〕
以上説明した如く、本発明の輸液用バッグの製造方法
によれば、中空筒体の外層部または中空筒体に設けた突
出部を予備加熱してから、金型によって中空筒体と開口
部とを押圧・加熱して溶着するので、中空筒体と開口部
とを完全に密着シールすることができ、中空筒体と開口
部との合せ目に隙間やピンホールが発生する可能性が皆
無になる。
【図面の簡単な説明】
第１図は本発明の製造方法によって作製した輸液用バッ
グの開口部を示す斜視図、第２図（ａ）〜（ｃ）は本発
明の製造方法におけるシール工程の一例を示す工程図、
第３図（ａ）、（ｂ）は中空筒体の突出部の成形変更例
を示す一部省略横断面図、第４図は一般の輸液用バッグ
の正面図、第５図〜第７図はそれぞれ従来のバッグにお
ける開口部の横断面図、第８図は従来のバッグの開口部
に取付ける中空筒体の斜視図である。 B:輸液用バッグ 1:中空筒体 3:突出部 5:中空筒体とシートとの合せ目 10:バッグの開口部 50:金型

Claims (2)

    (57)【特許請求の範囲】
  1. 【請求項１】本体の開口部に取付けられた中空筒体の外
    周面において中空筒体を垂直軸方向に二分する対称位置
    に、中空筒体との接合部が絞られた突出部が設けられて
    いることを特徴とする輸液用バッグ。
  2. 【請求項２】本体の開口部に取付ける中空筒体の外周面
    において中空筒体を垂直軸方向に二分する対称位置に突
    出部を設け、突出部が容易に変形できる程度にまで該突
    出部を加熱し、突出部を含む中空筒体を本体の開口部で
    包囲し、突出部を含む中空筒体と開口部とを金型で押圧
    すると共に、突出部及び中空筒体の外層部と開口部とを
    溶着する工程を有し、溶着後の突出部が絞られて中空筒
    体と接合していることを特徴とする輸液用バッグの製造
    方法。
JP1184320A 1989-07-17 1989-07-17 輸液用バッグおよびその製造方法 Expired - Lifetime JP2791387B2 (ja)

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JPH0349762A JPH0349762A (ja) 1991-03-04
JP2791387B2 true JP2791387B2 (ja) 1998-08-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7306553B2 (en) 2002-10-29 2007-12-11 Hosokawa Yoko Co., Ltd. Bag-making method
WO2010145667A1 (en) * 2009-06-17 2010-12-23 3L Ludvigsen A/S Ultrasonic sealing jaw and method for ultrasonic sealing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06182906A (ja) * 1992-12-15 1994-07-05 Honshu Paper Co Ltd バルカナイズドファイバー製鋸歯刃の高速接着方法
JPH07323478A (ja) * 1994-05-31 1995-12-12 Sumitomo Bakelite Co Ltd 注出栓溶着方法及びその装置
DE19752648C1 (de) * 1997-11-27 1999-03-18 Kiefel Gmbh Paul Verfahren zum Einschweißen eines Anschlußelements
RU2337821C2 (ru) * 2004-03-30 2008-11-10 Хосокава Йоко Ко., Лтд. Способ и устройство для производства мешков с элементом горловины
JP5739149B2 (ja) * 2010-12-10 2015-06-24 テルモ株式会社 医療用バッグの製造方法および医療用バッグ
US10668670B2 (en) * 2015-10-30 2020-06-02 Dow Global Technologies Llc Process for sealing flexible fitment to flexible film

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61194638U (ja) * 1985-05-27 1986-12-04

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7306553B2 (en) 2002-10-29 2007-12-11 Hosokawa Yoko Co., Ltd. Bag-making method
WO2010145667A1 (en) * 2009-06-17 2010-12-23 3L Ludvigsen A/S Ultrasonic sealing jaw and method for ultrasonic sealing
US8882946B2 (en) 2009-06-17 2014-11-11 3L Ludvigsen A/S Ultrasonic sealing jaw and method for ultrasonic sealing

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