JPS63139726A - 医療用バッグのポート取り付け方法 - Google Patents

医療用バッグのポート取り付け方法

Info

Publication number
JPS63139726A
JPS63139726A JP61286248A JP28624886A JPS63139726A JP S63139726 A JPS63139726 A JP S63139726A JP 61286248 A JP61286248 A JP 61286248A JP 28624886 A JP28624886 A JP 28624886A JP S63139726 A JPS63139726 A JP S63139726A
Authority
JP
Japan
Prior art keywords
electrodes
adherend
frequency
welding
high frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP61286248A
Other languages
English (en)
Other versions
JPH0356890B2 (ja
Inventor
Jun Futagawa
二川　準
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nipro Corp
Nissho Corp
Original Assignee
Nipro Corp
Nissho Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nipro Corp, Nissho Corp filed Critical Nipro Corp
Priority to JP61286248A priority Critical patent/JPS63139726A/ja
Priority to GB8727668A priority patent/GB2198082B/en
Priority to IT2281187A priority patent/IT1223389B/it
Priority to CN198787108238A priority patent/CN87108238A/zh
Priority to FR8716663A priority patent/FR2607437B1/fr
Publication of JPS63139726A publication Critical patent/JPS63139726A/ja
Priority to US07/348,133 priority patent/US4950347A/en
Publication of JPH0356890B2 publication Critical patent/JPH0356890B2/ja
Granted legal-status Critical Current

Links

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
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/32—Induction
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • 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
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/72—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
    • 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
    • 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
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7314—Electrical and dielectric properties
    • B29C66/73143—Dielectric properties
    • 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
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • 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
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81262—Electrical and dielectric properties, e.g. electrical conductivity
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
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    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
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    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/74—Joining plastics material to non-plastics material
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    • B29C66/7485—Natural fibres, e.g. wool, cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は熱可塑性樹脂の溶着方法に関する。
さらに詳しくは、本発明は高周波ウエルダーを用いても
溶着することができない熱可塑性樹脂を容易にしかも均
一にかつ確実に溶着しうる高周波による熱可塑性樹脂の
溶着方法に関する。
［従来の技術］ 誘電体損失が小さく、高周波ウエルダーを用いて溶着さ
せることができない熱可塑性樹脂を溶着する方法として
は、一般にインパルスシーラーを用いて溶着する方法、
加熱した金型を用いて溶着する方法および超音波発生装
置を用いて溶岩する方法が知られている。
インパルスシーラーを用いて溶着する方法は、その表面
が平面状である金属製の抵抗発熱体に電流を流して発熱
させ、かかる熱を利用しておもに熱可塑性樹脂からなる
フィルムどうしを帯状または直線状に溶着させる方法で
あり、抵抗発熱体の温度調節が容易であるという長所を
有する。しかしインパルスシーラーを用いて溶着する方
法では、たとえば２枚のシート状の被着体のあいだに硬
度の小さいチューブを挿入して溶着したばあい、チュー
ブが歪曲したり、またチューブと２枚のシートとの境界
面を完全にシールすることができないためにリークが発
生することがあるという欠点がある。
加熱した金型を用いて溶着する方法は、金型を加熱し、
かかる熱を利用して熱可塑性樹脂からなる被着体どうし
を溶着させる方法であり、金型の形状を被着体の形状に
合致させることにより種々の形状の被着体に適合させ、
加熱溶融させることができるという長所を有する。しか
しながら、金型温度は周囲の雰囲気温度によって影響を
受けて変化し、また溶着をくり返し行なうにつれて低下
することがあるので、該金型温度を制御するのはきわめ
て困難である。たとえば、金型温度が高くなり過ぎたば
あいには、溶着した際に被着体が溶融変形して外観不良
となり、また該金型温度が低いばあいには、溶着する時
間が長くなって生産性が低下したり、被着体どうしが完
全に均一に溶着しない、すなわち溶着不良を生じること
がある。
超音波発生装置を用いて溶着する方法は、超音波発生装
置から発生した超音波を被着体に伝播し、複数の接触さ
れた被着体の境界面に超音波の振動エネルギーにより熱
を発生させ、かかる熱によって被着体どうしを溶着させ
る方法であり、被着体の境界面を溶着するものであるか
ら、溶着による外観不良が発生せず、また熱源を必要と
しないので、容品に被着体どうしを溶着させることがで
きる。しかし超音波発生装置を用いて溶着する方法では
、たとえばポリブタジェン、低密度ポリエチレン、熱可
塑性エラストマー、エチレン系共重合体などの軟質材料
からなる被着体は発熱溶融しないので、これらの軟質材
料を適用することはできない。またとくに表面上に付着
した微粒子をはじめ、形状、材質、性能などに対して厳
しい規制が設けられ、高い安全性が要求されている、た
とえば輸液バッグ、血液バッグなどの医療用容器を超音
波発生装置を用いて作製するばあい、該容器の表面上に
超音波による振動によって微粒子が発生することがあり
、該微粒子を除去するのに膨大な労力を必要とすること
がある。さらに溶着時には溶融した被着体が流出し、パ
リが発生することがある。
前記したとおり、従来より種々の熱可塑性樹脂の溶着方
法があるにもかかわらず、高周波ウエルダーを用いても
溶着することができない熱可塑性樹脂どうしを容易にし
かも均一かつ確実に溶着しうる熱可塑性樹脂からなる被
着体の溶着方法はまだ見出されていない。
〔発明が解決しようとする問題点〕
そこで本発明者は、前記のごと〈従来技術の問題点に鑑
みてたとえばオレフィン系樹脂やＡＢＳＩＭｌｌｉなど
のような高周波ウェルダーを用いても溶着することがで
きない熱可塑性樹脂どうしを容易にしかも均一かつ確実
に溶着しうる溶着方法を見出すべく鋭意研究を重ねた結
果、本発明に到達した。
［問題点を解決するための手段］ すなわち、本発明は高周波ウエルダーの電極間に、高周
波によって発熱する発熱体および高周波によって溶融し
ない熱可塑性樹脂からなる被着体を挟んだのち、該電極
間に高周波を発生させることを特徴とする高周波による
熱可塑性樹脂の溶着方法に関する。
［作用および実施例］ 本発明は誘電体損失の小さい熱可塑性樹脂を高周波ウェ
ルダーを用いては加熱溶融させることはできないとされ
ていた従来の技術からみれば以外ともいえる新規な高周
波ウェルダーを用いた溶着方法の採用により、誘電体損
失が小さいために高周波ウェルダーを用いて溶着するこ
とができない熱可塑性樹脂からなる被着体どうしを容易
にしかも均一かつ確実に溶着することをはじめて可能と
したものである。さらに本発明の熱可塑性樹脂の溶着方
法によれば、被着体を約３′〜１０秒間ときわめて短時
間で溶着することができるので、該溶着方法は量産性に
すぐれた溶着方法である。
本発明においては、高周波ウエルダーの電極間に、高周
波ウェルダーで発熱する発熱体および高周波ウェルダー
で溶融しない熱可塑性樹脂からなる被着体を挟んだのち
、該電極間に高周波を発生させることにより被着体が溶
着される。
本発明において高周波ウエルダーで発熱する発熱体とし
ては、ポリアミド、ポリアミドイミド、ポリ塩化ビニル
、ポリ塩化ビニリデン、ポリウレタン、アセチルセルロ
ース、クロロプレンゴム、エピクロロヒドリンゴム、た
とえばポリクロロ三フッ化エチレンなどの塩索含釘フッ
素系重合体などの樹脂や厚紙、綿布などを用いることが
できるが、さらに前記の樹脂に耐熱性を付与する必要が
あるばあいには、たとえばガラス繊維強化ナイロン、ガ
ラス繊維強化ポリウレタン、ガラス繊維強化ポリエチレ
ンテレフタレートなどのな繊維強化樹脂や架橋されたポ
リ塩化ビニル、架橋されたエチレン−酢酸ビニル共重合
体などの架橋された樹脂を用いることができる。前記し
た発熱体のなかでは、軟質塩化ビニル樹脂は安価でかつ
柔軟性が大きく、シかもその入手が容易であるのでとく
に好適に使用することができる。該発熱体の形状は溶着
される被着体の形状に応じて適宜選択され、たとえば平
板状、筒状などいかなるものであってもよい。さらに必
要であるならば、高周波ウエルダーの電極上に所望の形
状を有する金型を設け、該金型に発熱体を設置してもよ
い。
本発明において被着体に用いることができる樹脂として
は、たとえばポリエチレン、ポリプロピレン、ポリブタ
ジェン、スチレン−ブタジェン系エラストマー、ポリス
チレン、ＡＢＳ樹脂、エチレン系共重合体などのように
直接高周波ウエルダーを用いては溶着することができな
い誘電体損失の小さい熱可塑性樹脂があげられるが、本
発明においてはこれらの樹脂のみに限定されず、他の誘
電体損失の小さい熱可塑性樹脂を用いることもできる。
本発明に用いられる高周波ウエルダーとしては従来より
誘電体損失の大きい熱可塑性樹脂を溶着する際に用いら
れている高周波ウエルダーであればいかなる種類の高周
波ウェルダーを用いてもよく、本発明はかかる高周波ウ
エルダーの種類に限定されるものではない。高周波ウエ
ルダーの周波数および出力は、被着体の大きさや種類な
どによって被着体の溶融条件が異なるので一概には決定
することができないが、通常周波数は１０〜１００ＭＩ
Ｉｚ　、出力は５０讐〜１００ＫＷの範囲内で適宜調整
される。
高周波ウェルダーの電極間に発熱体を設けたのは、電極
間に発生した高周波で発熱体を発熱させ、かかる発熱に
よって被着体を加熱するためである。高周波による発熱
は被着体の誘電率と誘電正接に比例するが、誘電圧接は
被着体を加熱することにより増大することが知られてい
る。したがって、発熱体による加熱に加え、被着体の誘
電正接の大幅な増大によって被着体の誘電体損失が増大
し、高周波溶むが可能になるのである。
本発明においては該電極間に設けられた発熱体の構成と
しては種々のものを適用することができる。つぎにかか
る構成を図面に基づいて説明する。
第１図および第２図は、電極（１）および（２）のあい
だにシート状の発熱体（３）および（４）を設け、さら
に発熱体（３）および（４）のあいだにシート状の被着
体（５）および（６）を設けたときの本発明の溶着方法
の概略説明図である。
第１図において、発熱体（３）または（４）のいずれか
一方の発熱によって被着体（５）および（６）を容易に
溶着することができるばあいには、発熱体（３）または
（４）のいずれか一方のみを用いてもよいが、発熱量を
増加させ、溶着時間を短縮させる必要があるばあいには
、発熱体（３）および（４）を併用するのが好ましい。
第１図に示されるように構成された発熱体（３）および
（４）ならびに被着体（５）および（６）は第２図に示
されるように電極（１）および（２）で発熱体（３）お
よび（４）ならびに被着体（５）および（６）を、溶着
時に被着体（５）および（６）が破断されない程度に軽
く圧し、電極（１）および（２）のあいだに高周波を発
生させ、発熱体（３）および（４）を発熱させることに
より被着体（５）および（６）は加熱され発熱されて溶
融し、一体化される。なお、電極（１）および（２）の
あいだに高周波を加えて溶着するのに要する時間は、発
熱体および被着体の材質やその厚さ、高周波の出力や周
波数などによって異なるので一概には決定することはで
きないが、たとえば発熱体（３）および（４）として軟
質塩化ビニルフィルム（厚さ＝０．３ａｍ）を用い、被
着体（３）および（４）として低密度ポリエチレンフィ
ルム（厚さ：　　０．２ｍ＋ｅ）　ヲ用い、高周波ウェ
ルダ−（出カニ４ＫＭ、周波数：４８ＭＨｚ）を用いて
電極（１）および（２）のあいだに電圧２００Ｖ、電流
０．３Ａをかけテシール幅５ＩＩＩｌ１１シール長さ２
００■を溶着したばあい、約５秒間であり、本発明の溶
着方法によればきわめて短時間で溶着することができる
。
第３図は電極上に設けられた金型（刀および（８）のあ
いだにあらかじめ所望の形状に成形された発熱体（３）
および（４）を設け、さらに発熱体（３）および（４）
のあいだにシート状の被着体（５）および（６）ならび
に中心部に円柱状の金型□□□が挿入された筒状の被着
体（９）が設けられたばあいの本発明の溶着方法の概略
説明図である。第３図において、金型（７）および（８
）で発熱体（３）および（４）ならびに被着体（５）、
（６）および（９）を軽く圧し、金型（７）および（８
）のあいだに高周波を発生させることにより第４図に示
されるように被着体（５）、（６）および（９）が加熱
され発熱されて溶融し、一体化される。
つぎに金型（７）および（８）から溶融、一体化された
溶着体０１）を取り出し、金型（至）を抜き取ることに
より、第５図に示されるような形状を有する溶着体（Ｉ
Ｉ）かえられる。
本発明の溶着方法によれば、発熱体および被着体は異質
材料からなるため、被着体を溶融し、一体化する際に被
着体と発熱体とが溶着することがないので、被着体を溶
融し、一体化した後に被着体と発熱体とを容品に分離す
ることができる。
第６図は電極（１）および（′２Ｊのあいだにシート状
の被着体（５）および（６）を設け、さらに被着体（５
）および（６）のあいだに内部に発熱体（＋２１が埋め
込まれた被着体■を設けたときの本発明の溶着方法の概
略説明図である。第６図において、電極（１）および（
２）のあいだの距離を小さくシ、電極（１）および（′
２Ｊで被着体（５）、（６）および０を軽く圧し、電極
（１）および（２のあいだに高周波を発生させることに
より第７図に示されるように被着体（５）、（６）およ
び０が溶着一体化され、溶着体（Ｉｌ＋かえられる。
また、くり返し被着体を溶着、一体化することができる
ようにするために、たとえば第８図に示されるように電
極または金型（７）および（８）の表面上に発熱体（３
）および（４）を取り付けてもよい。
このとき発熱体に用いられる樹脂としては、前記したご
とくたとえばガラス繊維強化ナイロン、ガラス繊維強化
ポリウレタン、ガラス繊維強化ポリエチレンテレフタレ
ートなどの繊維強化樹脂や架橋されたポリ塩化ビニル、
架橋されたエチレン−酢酸ビニル共重合体などの架橋さ
れた樹脂のような耐熱性にすぐれた樹脂を用いるのが好
ましい。
つぎに実施例に基づいて本発明の熱可塑性樹脂の溶着方
法をさらに詳細に説明するが、本発明はかかる実施例の
みに限定されるものではない。
実施例１ 高周波ウェルダ−（フィンライト電子精工■製、品番：
　ＬＷｌｌ　４０８０ＳＢ、　出カニ　４　ＫＷ、周波
数＝４６ＭＩｌｚ　）を用い、該高周波ウェルダーの電
極のあいだに発熱体として軟質塩化ビニルフィルム（厚
さ：　　０．３ｍ■）を２枚設け、該発熱体のあいだに
被着体としてスチレン系エラストマー（ＭＫレジン、大
日本プラスチック■製、厚さ：０．２５＋ｇｍ）を２枚
重ね合せて挿入し、全体を両電極で圧しながら、該電極
間に電圧２００Ｖ　、電流０．３Ａをかけ、５秒間で幅
５ｍｍ、長さ２００　ａｍを溶着し、一体化した。
えられた２枚のスチレン系エラストマーフィルムが溶着
一体化されたフィルムの溶着部は透明であり、凹凸もな
く均一であった。
つぎにえられたフィルムの溶着部における剥離強度を求
めたところ、５．４ｋｇ／１５＋ａｍ幅と大きく、たと
えば食品用バッグなどとして用いたばあいであっても実
用に充分耐えうるちのであった。
実施例２ 実施例１において、被着体として低密度ポリエチレンフ
ィルム（厚さ：　　０．２ｍ園）を２枚重ね合せたもの
を用いたほかは実施例１とまったく同様にして被着体を
溶着して一体化したフィルムを作製した。
えられたフィルムの溶着部は透明であり、凹凸もなく均
一であった。
つぎにえられたフィルムの溶着部における剥離強度を求
めたところ、５．２ｋｇ　／　１５ｍｍ幅と大きく、実
施例１でえられた２枚のスチレン系エラストマーフィル
ムが溶着一体化されたフィルムと同様に実用上充分に満
足しうる強度を有するものであった。
さらに発熱体および被着体として第１表に示されるもの
を用いたほかは実施例１とまったく同様にして被着体を
溶着して一体化したフィルムを作製したところ、第１表
に示されるように外観はすべて良好であり、また溶着に
要する時間は３〜ＩＯ秒間ときわめて短時間であった。
［以下余白］ 実施例３ 実施例１で用いた高周波ウエルダーを用い、該高周波ウ
エルダーの電極のあいだに発熱体として軟質塩化ビニル
フィルム（厚さ：　　０．３Ｓｍ）２枚を設け、該発熱
体のあいだに被着体としてポリエチレンインフレフィル
ム（厚さ：　　０．２＋＋ｓ）の一端を挿入し、全体を
両電極で圧しながら、該電極間に電圧２００Ｖ　、電流
０．３Ａをかけ、該被着体の一端の幅５ｍｍ、長さ２０
０■ｍを溶着し、一体化した。
つぎに該インフレフィルムの他端にボートに金型が挿入
されたポリエチレン製バイブ状ポート（内径：１５關、
外径：１ｇｍｍ）を挿入し、ついでインフレフィルムお
よびバイブ状ポートを所望の形状を有する金型電極のあ
いだに挿入してはさんだ後、この金型電極間に電圧２０
０ｖ％電流０．３Ａをかけてポートとインフレフィルム
を溶着一体化し、ポート付輸液バッグ（容量＝５００ｍ
ｌ　）を作製した。えられたポート付輸液バッグの斜視
図を第９図に示す。第９図において、０４）はポート、
６は輸液バッグである。
えられたポート付輸液バッグの溶着部は透明であり、凹
凸もなく均一であった。
つぎに該ポート付輸液バッグにエアーを送入し、耐圧（
空気圧：　　０．７／ｄ）テストを行なったが、リーク
などの異常はなかった。さらに該ボート付輸液バッグ内
に水５００　ｍｌを注入し、該ボート付輸液バックを高
さ１ｍから落下させても破裂などの損傷などはまったく
生じなかった。
実施例４ 実施例１で用いた高周波ウエルダーを用い、該高周波ウ
ェルダーに設けた所望の形状を有する金型電極のあいだ
に発熱体として軟質塩化ビニルフィルム（厚さ＝０．４
關）２枚を設け、該２枚の軟質塩化ビニルフィルムのあ
いだにスチレン−エチレン−ブチレン−スチレンブロッ
ク共重合体（以下、５ＥＢＳという）系エラストマー（
ＭＫレジン、ＭＫ−３Ｓ、大日本プラスチック■製）か
らなる２枚のシート（厚さ：　　０．２５　ａｍ、長さ
：１５０ｍｍ、幅：　　１２ｈａ）を挿入し、さらにこ
の２枚のシートのあいだに５ＥＩｌＳ系エラストマーか
らなるミ内部に膜チューブが設けられたポートカバー（
内径：５■、外径ニアｍｍ）２本および採血チューブ（
内径：３關、外径：４．５關）１本を挿入し、金型電極
間に電圧２００Ｖ、電流０．３Ａを約７秒間かけ、シー
　ト、ボードカバーおよび採血チューブを溶着一体化し
た。
つぎに溶着されていない、重ねられた２枚のシートの周
囲を前記と同様にして約７秒間で溶若し、血液バッグ（
容量；　　２３Ｇｍｌ）を作製した。
えられた血液バッグの斜視図を第１Ｏ図に示す。
第１θ図において、０７）は膜チューブＯａをカバーす
るポートカバー、（ト）は血液バッグ、叫は採血チュー
ブ、囚は採血針である。
つぎにえられた血液バッグを厚生省告示４４８号（昭和
４９年９月２８日）に規定された塩化ビニル樹脂製血液
セット基準に基づいて気密度試験、遠心試験および耐圧
試験を行なった。その結果を第２表に示す。
第　　　　２　　　　表 第２表に示された結果かられかるようにえられた血液バ
ッグは塩化ビニル樹脂製血液セット基準を満足しうるち
のであった。
［発明の効果］ 上記のように本発明の熱可塑性樹脂の溶着方法は、従来
より誘電体損失が小さく、高周波ウエルダーを用いては
溶着することができないとされていた熱可塑性樹脂を容
易にしかも短時間に均一に溶着させることができ、さら
に溶着の際にたとえば硬度の小さい熱可塑性樹脂からな
るボート部を２枚のシート状の被着体のあいだに挿入す
るばあいであっても、該ボート部を歪曲させたり、ボー
ト部におけるリークなどを発生させることなく、均一か
つ確実にボート部および被着体を溶着することができる
ので、たとえばボート付輸液バッグ、血液バッグなどの
薬液、体液保存容器など、形状、材質、性能などが厳し
く規制され、しかも高い安全性が要求されるバッグなど
を従来よりも容易に作製することができる。
また本発明の熱可塑性樹脂の溶着方法によればポリプロ
ピレン製容器などのように従来ではブロー成形により作
製されていた容器なども大規模な金型を必要としないで
容易にかつ短時間で生産することができる。
【図面の簡単な説明】
第１図〜第８図は本発明の熱可塑性樹脂の溶着方法の概
略説明図、第９図は本発明の実施例３でえられたボート
付輸液バッグの斜視図、第１Ｏ図は実施例４でえられた
血液バッグの斜視図である。 （図面の主要符号） （１）、（２）：電極 （３）、（４）：発熱体 （５）、（６）：被着体 特許出願人　　株式会社ニッショー 才５図 オ６図 オフ図 才８図 手続十市正書（自発）

Claims (1)

  1. 【特許請求の範囲】 １　高周波ウェルダーの電極間に、高周波によって発熱
    する発熱体および高周波によって溶融しない熱可塑性樹
    脂からなる被着体を挟んだのち、該電極間に高周波を発
    生させることを特徴とする高周波による熱可塑性樹脂の
    溶着方法。 ２　被着体を２つの発熱体のあいだに設ける特許請求の
    範囲第１項記載の熱可塑性樹脂の溶着方法。 ３　発熱体がポリアミド、ポリアミドイミド、ポリ塩化
    ビニル、ポリ塩化ビニリデン、ポリウレタン、アセチル
    セルロース、クロロプレンゴム、エピクロロヒドリンゴ
    ム、塩素含有フッ素系重合体、厚紙または綿布である特
    許請求の範囲第１項記載の熱可塑性樹脂の溶着方法。 ４　被着体がポリエチレン、ポリプロピレン、ポリブタ
    ジエン、スチレン−ブタジエン系エラストマー、ポリス
    チレン、ＡＢＳ樹脂またはエチレン系共重合体である特
    許請求の範囲第１項記載の熱可塑性樹脂の溶着方法。
JP61286248A 1986-01-12 1986-12-01 医療用バッグのポート取り付け方法 Granted JPS63139726A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP61286248A JPS63139726A (ja) 1986-12-01 1986-12-01 医療用バッグのポート取り付け方法
GB8727668A GB2198082B (en) 1986-12-01 1987-11-26 Method for the manufacture of plastic bags
IT2281187A IT1223389B (it) 1986-12-01 1987-11-30 Metodo per la saldatura di una resina termoplastica
CN198787108238A CN87108238A (zh) 1986-12-01 1987-11-30 熔接热塑性树脂的方法
FR8716663A FR2607437B1 (fr) 1986-12-01 1987-12-01 Procede pour souder une resine thermoplastique a faibles pertes dielectriques avec un appareil a souder a haute frequence
US07/348,133 US4950347A (en) 1986-01-12 1989-05-05 Method for welding thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61286248A JPS63139726A (ja) 1986-12-01 1986-12-01 医療用バッグのポート取り付け方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2079997A Division JPH02269026A (ja) 1990-03-27 1990-03-27 医療用バッグのポート取り付け方法

Publications (2)

Publication Number Publication Date
JPS63139726A true JPS63139726A (ja) 1988-06-11
JPH0356890B2 JPH0356890B2 (ja) 1991-08-29

Family

ID=17701902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61286248A Granted JPS63139726A (ja) 1986-01-12 1986-12-01 医療用バッグのポート取り付け方法

Country Status (6)

Country Link
US (1) US4950347A (ja)
JP (1) JPS63139726A (ja)
CN (1) CN87108238A (ja)
FR (1) FR2607437B1 (ja)
GB (1) GB2198082B (ja)
IT (1) IT1223389B (ja)

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JPH08168511A (ja) * 1994-07-26 1996-07-02 Kendall Co:The 圧迫スリーブ、圧迫スリーブの形成方法、及び、患者の脚に加圧ガス源から圧迫圧力を加えるための装置
JP4624483B2 (ja) * 2008-12-22 2011-02-02 オリンパスメディカルシステムズ株式会社 処置具

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DE3936324A1 (de) * 1989-10-27 1990-12-06 Alfred Schwalbach Gmbh Verfahren und maschine zum hochfrequenzschweissen von polyolefinen
DE4017577A1 (de) * 1990-05-31 1991-12-05 Hft Obermeier Maschinenbau Gmb Verfahren zum verschweissen wenigstens eines bereichs einer auflagefolie mit einer aufnahmeflaeche einer traegerschicht
DE4040687C1 (ja) * 1990-12-19 1992-05-27 Paul Kiefel Hochfrequenz-Anlagen Gmbh, 8228 Freilassing, De
EP0495729A3 (en) * 1991-01-17 1992-09-02 Terumo Kabushiki Kaisha Composite substrate for medical container
US5213713A (en) * 1991-03-21 1993-05-25 The United States Of America As Represented By The Secretary Of The Navy Process of shaping an electrorheological solid
CA2104864C (en) * 1991-03-22 1997-03-18 Claude Desmarais Thermoplastic film and method of welding same
US5225025A (en) * 1991-05-14 1993-07-06 Aluminum Company Of America Apparatus and method for resistance welding
FR2679485A1 (fr) * 1991-07-26 1993-01-29 Socratech Procede de soudage a haute frequence d'articles en elastomere.
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IT8722811A0 (it) 1987-11-30
FR2607437A1 (fr) 1988-06-03
FR2607437B1 (fr) 1990-06-29
CN87108238A (zh) 1988-08-31
US4950347A (en) 1990-08-21
GB2198082B (en) 1990-12-12
GB8727668D0 (en) 1987-12-31
GB2198082A (en) 1988-06-08
IT1223389B (it) 1990-09-19
JPH0356890B2 (ja) 1991-08-29

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