JP2000237280A - Manufacture of bag for medical use and mouth part mold - Google Patents

Manufacture of bag for medical use and mouth part mold

Info

Publication number
JP2000237280A
JP2000237280A JP3994199A JP3994199A JP2000237280A JP 2000237280 A JP2000237280 A JP 2000237280A JP 3994199 A JP3994199 A JP 3994199A JP 3994199 A JP3994199 A JP 3994199A JP 2000237280 A JP2000237280 A JP 2000237280A
Authority
JP
Japan
Prior art keywords
electrode
neck
insulator
sheet
pressing
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.)
Pending
Application number
JP3994199A
Other languages
Japanese (ja)
Inventor
Fujio Wada
富士男 和田
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.)
SB Kawasumi Laboratories Inc
Original Assignee
Kawasumi Laboratories Inc
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 Kawasumi Laboratories Inc filed Critical Kawasumi Laboratories Inc
Priority to JP3994199A priority Critical patent/JP2000237280A/en
Publication of JP2000237280A publication Critical patent/JP2000237280A/en
Pending 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
    • B29C65/04—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
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/81—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
    • B29C66/814—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
    • B29C66/8141—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
    • 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
    • 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
    • B29C66/814—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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81461—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being multi-lamellar or segmented, i.e. comprising a plurality of strips, plates or stacked elements
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8187—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
    • B29C66/81871—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
    • 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
    • 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
    • B29C66/73—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
    • B29C66/80—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
    • B29C66/814—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
    • B29C66/8141—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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • 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)

Abstract

PROBLEM TO BE SOLVED: To provide a bag for medical use and a mouth part mold by which even a sheet comprising a material having small dielectric loss can be melted and fused in a short time by dielectric heating without a previous heating process. SOLUTION: An injection on which a port part 4 and a neck part 3 are formed is positioned between two synthetic resin sheets 11 or an inflation tubes from the upper direction. The sheet 11 or the inflation tube is pressed and welded by a mouth part mold 12 so constituted that an electrode 13, an insulator 14, a free electrode 15, an insulator 14, a free electrode 14 and an electrode 13 are arranged in parallel in this order in the longitudinal direction of the neck part 3, and the electrode 13 and the free electrode 15 form pressing grooves 16, respectively in the longitudinal direction of the neck part 3, and the insulator 14 in welded by pressing under upper and lower mouth dies 12 and forms a semicircular groove part 17 which is positioned in the transversal direction of the pressing groove 16 and is deeper than the pressing groove 16. Next, this sheet is pressed by the upper and lower molds to form a bag-shaped body.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は血液、輸液等を収納
する医療用バックの製造方法及び口部金型の改良に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a medical bag for storing blood, an infusion solution, and the like, and an improvement in a mouth mold.

【０００２】[0002]

【発明が解決しようとする課題】出願人は特開平８−１
１７３１８号「医療用バッグ及びその製造方法」で輸液
口の長さ方向に対して電極、絶縁体、電極の順序で並列
に配置し、前記電極は輸液口の長さ方向に押圧溝を形成
し、前記絶縁体は前記押圧溝の横方向で且つ押圧溝より
深い半円状の溝部を形成することにより構成される上下
の口部金型により、輸液口の基部とこれに接するシート
を挟持圧着し、高周波を印加して、前記電極を構成する
給電極（Ｓ）とアース極（Ｅ）との間に電気力線を生じ
させ、これにさらされたシートに誘電体損失を起こさせ
て溶融を誘発する技術を提供した。しかし、この方法で
溶融できるシートの素材は例えばＰＶＣ（ポリ塩化ビニ
ル）、ＥＶＡ（エチレン・酢酸ビニル樹脂）など誘電体
損失が充分大きいものに限られ、ＰＰ（ポリプロピレ
ン）、ＰＥ（ポリエチレン）などの誘電体損失の小さい
素材は長い溶着時間を要するか、あるいは溶融させるこ
とが困難であった。その為素材を電熱等で予め加熱した
後に高周波を印加する方法が取られていたが、シートの
均等な加熱が困難なために安定した良好な溶着を得るこ
とができなかった。そこで本発明者は以上の課題を解決
する為に、鋭意検討を重ねた結果次の発明に到達した。SUMMARY OF THE INVENTION The applicant filed Japanese Patent Application Laid-Open
No. 17318, "Medical bag and manufacturing method thereof", the electrode, the insulator, and the electrode are arranged in parallel in the order of the length of the infusion port, and the electrode forms a pressing groove in the length direction of the infusion port. The upper and lower mouth dies are formed by forming a semicircular groove in the insulator in a lateral direction of the pressing groove and deeper than the pressing groove, so that the base of the infusion port and a sheet in contact with the base are pressed and crimped. Then, a high frequency is applied to generate a line of electric force between the supply electrode (S) and the ground electrode (E) constituting the electrode, and a dielectric loss occurs in the sheet exposed to the line to melt the sheet. Provided a technique to induce However, the material of the sheet that can be melted by this method is limited to those having a sufficiently large dielectric loss, such as PVC (polyvinyl chloride) and EVA (ethylene / vinyl acetate resin), such as PP (polypropylene) and PE (polyethylene). Materials with low dielectric loss require long welding times or are difficult to melt. For this reason, a method of applying a high frequency after preheating the material by electric heating or the like has been adopted. However, it was difficult to uniformly heat the sheet, so that stable and good welding could not be obtained. The inventor of the present invention has made intensive studies to solve the above problems, and as a result, has arrived at the next invention.

【０００３】[0003]

【課題を解決する為の手段】［１］本発明は、次の工程
によりなる医療用バックの製造方法を提供する。 （１）二枚の合成樹脂製のシート１１またはインフレー
ションチューブの間に、ポート部４と首部３を形成した
注入部８を上部方向から置いて、前記首部３の基部７と
これに接するシート１１またはインフレーションチュー
ブを、首部３の長さ方向に対して電極１３、絶縁体１
４、フリー電極１５、絶縁体１４、電極１３の順序で並
列に配置し、前記電極１３とフリー電極１５は首部３の
長さ方向にそれぞれ押圧溝１６を形成し、前記絶縁体１
４は前記押圧溝１６の横方向で且つ押圧溝１６より深い
半円状の溝部１７を形成することにより構成される上下
の口部金型１２により押圧して溶着する工程、（２）前
記（１）のシートを上下の枠金型により押圧して袋状本
体を形成する工程、［２］本発明は、注入部８の首部３
とシート１１またはインフレーションチューブを溶着す
る口部金型１２において、前記首部３の長さ方向に対し
て電極１３、絶縁体１４、フリー電極１５、絶縁体１
４、電極１３の順序で並列に配置し、前記電極１３とフ
リー電極１５は首部３の長さ方向にそれぞれ押圧溝１６
を形成し、前記絶縁体１４は前記押圧溝１６の横方向で
且つ押圧溝１６より深い半円状の溝部１７を形成するこ
とにより構成した口部金型１２を提供する。Means for Solving the Problems [1] The present invention provides a method of manufacturing a medical bag comprising the following steps. (1) An injection part 8 having a port part 4 and a neck part 3 is placed between two synthetic resin sheets 11 or an inflation tube from above, and the base part 7 of the neck part 3 and the sheet 11 in contact therewith are placed. Alternatively, the inflation tube is connected to the electrode 13 and the insulator 1 with respect to the length direction of the neck 3.
4, the free electrode 15, the insulator 14, and the electrode 13 are arranged in parallel in this order, and the electrode 13 and the free electrode 15 form pressing grooves 16 in the longitudinal direction of the neck 3, respectively.
4 is a step of pressing and welding by upper and lower mouth molds 12 formed by forming a semicircular groove portion 17 in the lateral direction of the pressing groove 16 and deeper than the pressing groove 16; 1) the step of pressing the sheet with the upper and lower frame dies to form a bag-shaped main body;
Electrode 13, insulator 14, free electrode 15, insulator 1 in the longitudinal direction of the neck 3 in the die 12 for welding the sheet 11 or the sheet 11 or the inflation tube.
4. The electrodes 13 and the free electrodes 15 are arranged in parallel in the order of the electrodes 13, and the pressing grooves 16
The insulator 14 provides the mouth mold 12 formed by forming a semicircular groove 17 in the lateral direction of the pressing groove 16 and deeper than the pressing groove 16.

【０００４】[0004]

【発明の実施の形態】図１は本発明の口部金型１２より
二枚の合成樹脂製のシート１１に注入部８を装着し、後
述する枠金型で袋状本体２を形成した医療用バック１の
概略図で、医療用バック１は可撓性合成樹脂からなる袋
状本体２と、該袋状本体２の上部にポート部４と首部３
を一体に形成した注入部８を溶着固定する事により構成
され、前記首部３の基部７には突部９が形成され、前記
突部９は首部３の横方向に土手状に形成される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a medical device in which an injection portion 8 is attached to two synthetic resin sheets 11 from a mouth mold 12 of the present invention, and a bag-shaped main body 2 is formed by a frame mold described later. 1 is a schematic view of a medical bag 1, wherein a medical bag 1 has a bag-shaped main body 2 made of a flexible synthetic resin, and a port portion 4 and a neck portion 3 on the upper portion of the bag-shaped main body 2.
Is formed by welding and fixing an injection portion 8 integrally formed with the base portion 7. A protrusion 9 is formed on the base 7 of the neck portion 3, and the protrusion 9 is formed in a bank shape in the lateral direction of the neck portion 3.

【０００５】次に医療用バック１の製造方法について説
明する。図２は注入部８の首部３を可撓性を有する合成
樹脂のシート１１に装着する時の概略図で、図３は前記
注入部８の首部３をシート１１に装着し、上下の口部金
型１２で挟持して、押圧し、高周波を印加した後の概略
図である。図２及び図３に示すように、注入部８の首部
３を治具１８（パーツフィーダー）に装着し、これを二
枚のシート１１の間に上部方向から置き上下の口部金型
１２で挟持して、押圧し、高周波を印加する。図４はシ
ート１１の間に注入部８の首部３を置いて、上下の口部
金型１２の間に配置した時の断面図及び配線図で、図５
は口部金型１２の斜視図である。口部金型１２は首部３
の長さ方向に対して電極１３、絶縁体１４、配線しない
電極１５（以後「フリー電極１５」と略記する）、絶縁
体１４、電極１３、絶縁体１４、フリー電極１５、絶縁
体１４、電極１３の順序で並列に配置し、前記電極１３
とフリー電極１５は首部３の長さ方向にそれぞれ押圧溝
１６を形成し、前記絶縁体１４は前記押圧溝１６の横方
向で且つ押圧溝１６より深い半円状の溝部１７を形成す
ることにより構成される。前記のように配置されたシー
ト１１と注入部８を上下の口部金型１２で挟持して、押
圧し、高周波を印加することにより、首部３の基部７と
これに接するシート１１を溶着することができる。シー
ト１１は二枚の合成樹脂製のシートに限らず、インフレ
ーション成形によりチューブ状に成形したフィルムを、
袋状本体２のサイズに切断して使用することができる。
前記インフレーションフィルムの端部中央に、注入部８
の首部３を挿入し、前記と同じように上下の口部金型１
２により挟持して、押圧し、高周波を印加して溶着する
ことができる。Next, a method of manufacturing the medical bag 1 will be described. FIG. 2 is a schematic view when the neck 3 of the injection section 8 is mounted on a flexible synthetic resin sheet 11, and FIG. FIG. 3 is a schematic diagram after holding and pressing with a mold 12 and applying a high frequency. As shown in FIGS. 2 and 3, the neck portion 3 of the injection section 8 is mounted on a jig 18 (parts feeder), and the jig 18 is placed between two sheets 11 from above, and the upper and lower mouth dies 12 are used. Hold and press to apply high frequency. FIG. 4 is a cross-sectional view and a wiring diagram when the neck 3 of the injection unit 8 is placed between the sheets 11 and is disposed between the upper and lower mouth dies 12.
FIG. 3 is a perspective view of a mouth mold 12. The mouth mold 12 is the neck 3
13, insulator 14, non-wired electrode 15 (hereinafter abbreviated as "free electrode 15"), insulator 14, electrode 13, insulator 14, free electrode 15, insulator 14, electrode in the longitudinal direction of 13 in parallel in the order of
The free electrode 15 forms a pressing groove 16 in the longitudinal direction of the neck 3, and the insulator 14 forms a semicircular groove 17 in the lateral direction of the pressing groove 16 and deeper than the pressing groove 16. Be composed. The sheet 11 and the injection portion 8 arranged as described above are sandwiched between the upper and lower mouth dies 12, pressed, and a high frequency is applied to weld the base 7 of the neck portion 3 and the sheet 11 in contact with the base 7. be able to. The sheet 11 is not limited to two sheets made of synthetic resin, and a film formed into a tube shape by inflation molding may be used.
It can be cut to the size of the bag-shaped main body 2 and used.
At the center of the end of the blown film, an injection portion 8 is provided.
Insert the neck 3 of the upper and lower mouth molds 1 as described above.
2 and can be pressed and welded by applying a high frequency.

【０００６】口部金型１２は首部３の長さ方向に並列に
配置した電極１３、絶縁体１４、フリー電極１５、絶縁
体１４、電極１３を一組の最小限の構成単位とし、溶着
する基部７の長さに応じて構成単位を増やすことができ
る。例えば二組の構成単位の場合、電極１３、絶縁体１
４、フリー電極１５、絶縁体１４、電極１３、絶縁体１
４、フリー電極１５、絶縁体１４、電極１３の順で配置
される。前記口部金型１２の構成単位数を一組から二組
に増やす場合、一組目の最後の電極１３と二組目の最初
の電極１３は同一電極１３を使用する。口部金型１２を
構成する電極１３、絶縁体１４、フリー電極１５の幅に
ついては、電極１３は０．１ｍｍ〜２．０ｍｍ、好まし
くは０．５ｍｍ〜１．０ｍｍ、絶縁体１４は０．５ｍｍ
〜１０ｍｍ、好ましくは１．０ｍｍ〜５．０ｍｍ、フリ
ー電極１５は０．５ｍｍ〜５．０ｍｍ、好ましくは１．
０ｍｍ〜３．０ｍｍに設定した方が良い。The mouth mold 12 is welded by forming the electrode 13, the insulator 14, the free electrode 15, the insulator 14, and the electrode 13 arranged in parallel in the length direction of the neck 3 as a set of minimum constituent units. The number of constituent units can be increased according to the length of the base 7. For example, in the case of two sets of constituent units, the electrode 13 and the insulator 1
4, free electrode 15, insulator 14, electrode 13, insulator 1
4, the free electrode 15, the insulator 14, and the electrode 13 are arranged in this order. When the number of constituent units of the mouth mold 12 is increased from one set to two sets, the same electrode 13 is used for the last electrode 13 of the first set and the first electrode 13 of the second set. Regarding the width of the electrode 13, the insulator 14, and the free electrode 15 constituting the mouth mold 12, the electrode 13 has a width of 0.1 mm to 2.0 mm, preferably 0.5 mm to 1.0 mm, and the insulator 14 has a width of 0.1 mm to 1.0 mm. 5mm
10 to 10 mm, preferably 1.0 mm to 5.0 mm, and the free electrode 15 is 0.5 mm to 5.0 mm, preferably 1.0 mm to 5.0 mm.
It is better to set it to 0 mm to 3.0 mm.

【０００７】図４に示すように、高周波は電源１９から
供給するが口部金型１２は、上下の口部金型１２の対向
する電極１３同士が同極（例えばアース極（Ｅ）とアー
ス極（Ｅ）、または給電極（Ｓ）と給電極（Ｓ））とな
り、前記絶縁体１４とフリー電極１５を介して首部３の
長さ方向に配列した電極１３が交互に異極（例えばアー
ス極（Ｅ）、給電極（Ｓ）、アース極（Ｅ）…………ま
たは給電極（Ｓ）、アース極（Ｅ）、給電極（Ｓ）…
…）となるように配線する。As shown in FIG. 4, a high frequency is supplied from a power supply 19, but in the mouth mold 12, the opposite electrodes 13 of the upper and lower mouth molds 12 have the same polarity (for example, a ground electrode (E) and a ground). (E) or the supply electrode (S) and the supply electrode (S)), and the electrodes 13 arranged in the longitudinal direction of the neck 3 via the insulator 14 and the free electrode 15 alternately have different poles (for example, ground). Electrode (E), supply electrode (S), earth electrode (E) ... or supply electrode (S), earth electrode (E), supply electrode (S) ...
…).

【０００８】以上のように構成した上下の口部金型１２
で前記のように配置した首部３の基部７とシート１１を
挟持して、押圧し、電源１９を作動させて各電極１３に
高周波を印加すると給電極（Ｓ）とアース極（Ｅ）との
間に電気力線が生じ、これにさらされた前記フリー電極
１５には高周波電界がかかるので渦電流が誘起される。
この渦電流は金属の表面を流れるので表皮効果と呼ばれ
ているが、この表皮効果があるということは、金属表面
の抵抗が大きいため発熱が大きくなることを意味する。
従って前記フリー電極表面部２０は高周波の印加によ
り、急激に温度上昇して、シート１１を加熱することに
なり、これに比例してシート１１の誘電体損失は大きく
なって行き一定時間（素材により異なる）後には、誘電
体損失が大きくなるように導くことができる。従って誘
電体損失の小さいＰＥ（ポリエチレン）、ＰＰ（ポリプ
ロピレン）より構成されるシート１１も前記のように事
前の加熱処理なしで、誘電発熱を加速させ短時間で溶融
し溶着することができる。The upper and lower mouth dies 12 constructed as described above.
When the base 7 of the neck 3 and the sheet 11 arranged as described above are sandwiched and pressed, and the power supply 19 is operated to apply a high frequency to each electrode 13, the supply electrode (S) and the ground electrode (E) Lines of electric force are generated in between, and a high-frequency electric field is applied to the free electrode 15 exposed to the lines, so that an eddy current is induced.
Since the eddy current flows on the surface of the metal, it is called a skin effect. The presence of the skin effect means that the resistance of the metal surface is large and the heat generation is large.
Therefore, the free electrode surface portion 20 rapidly rises in temperature by the application of a high frequency, and heats the sheet 11, and in proportion to this, the dielectric loss of the sheet 11 increases, and for a certain time (depending on the material) After the difference, it can be guided to increase the dielectric loss. Accordingly, the sheet 11 made of PE (polyethylene) or PP (polypropylene) having a small dielectric loss can be melted and welded in a short time by accelerating the dielectric heat generation without prior heat treatment as described above.

【０００９】図６は図３の拡大図で、図７は図６のＡ−
Ａの断面図である。図６の矩形の枠の中が一次溶着部２
２として溶着されている。前記一次溶着部２２の矩形は
口部金型１２の電極１３や絶縁体１４やフリー電極１５
の数によって大きさが変ってくる。また突部９の数や形
状も前記絶縁体１４の数や溝部１７の幅や深さによって
異なってくる。FIG. 6 is an enlarged view of FIG. 3, and FIG.
It is sectional drawing of A. The inside of the rectangular frame in FIG.
2 is welded. The rectangular shape of the primary weld 22 is the electrode 13, the insulator 14, and the free electrode 15 of the die 12.
The size changes according to the number. Also, the number and shape of the protrusions 9 vary depending on the number of the insulators 14 and the width and depth of the groove 17.

【００１０】図８は袋状本体２の輪郭を形取った、二次
溶着部２３を示す概略図である。前記一次溶着部２２を
形成した前記シート１１を、外周に溶断刃を設けた上下
の枠金型（図示せず）により押圧して、二次溶着部２３
と切断線２４を形成し袋状本体２を形成する。二次溶着
部２３では、シート１１に溶着された前記一次溶着部２
２の首部３の基部７以外の輪郭周囲を溶着する。最後に
袋状本体２の輪郭周囲の不要なシート部２１を引き剥が
す。FIG. 8 is a schematic diagram showing the secondary welded portion 23, which outlines the shape of the bag-shaped main body 2. As shown in FIG. The sheet 11 on which the primary welding portion 22 is formed is pressed by upper and lower frame dies (not shown) provided with a fusing blade on the outer periphery, and the secondary welding portion 23 is pressed.
And the cutting line 24 are formed to form the bag-shaped main body 2. In the secondary welding portion 23, the primary welding portion 2 welded to the sheet 11 is used.
The periphery of the contour other than the base 7 of the neck 3 is welded. Finally, the unnecessary sheet portion 21 around the outline of the bag-shaped main body 2 is peeled off.

【００１１】本発明で注入部８とは図示したもののほか
に特開平８−１１７３１８号のプロテクターを被冠した
輸液口も含み、輸液口の上部が前記注入部８のポート部
４に、輸液口の下部及びプロテクター下部が前記注入部
８の首部３にそれぞれ相当する。In the present invention, the injection part 8 includes an infusion port covered with a protector disclosed in Japanese Patent Application Laid-Open No. HEI 8-117318, in addition to the one shown in the drawing. And the lower part of the protector correspond to the neck 3 of the injection part 8, respectively.

【００１２】[0012]

【発明の作用効果】二枚の可撓性を有する合成樹脂製の
シート１１の間に、ポート部４と首部３を一体に形成し
た注入部８を上部方向から置いて、首部３の基部７とこ
れに接するシート１１を首部３の長さ方向に対して電極
１３、絶縁体１４、フリー電極１５、絶縁体１４、電極
１３の順序で並列に配置し、前記電極１３とフリー電極
１５は首部３の長さ方向にそれぞれ押圧溝１６を形成
し、前記絶縁体１４は前記押圧溝１６の横方向で且つ押
圧溝１６より深い半円状の溝部１７を成形することによ
り構成される上下の口部金型１２で押圧し、高周波を印
加すると、電極１３の給電極（Ｓ）とアース極（Ｅ）と
の間に電気力線が生じ、これにさらされた前記フリー電
極１５には高周波電界がかかり渦電流が誘起される。こ
れにより前記フリー電極表面部２０は高周波の印加によ
り、急激に温度上昇して、シート１１を加熱することに
なり、これに比例してシート１１の誘電体損失は大きく
なって行き一定時間（素材により異なる）後には、誘電
体損失が大きくなるように導くことができる。従って誘
電体損失の小さいＰＥ（ポリエチレン）、ＰＰ（ポリプ
ロピレン）より構成されるシート１１も前記のように事
前の加熱処理なしで、誘電発熱を加速させ短時間で溶融
し溶着することができる。The injection portion 8 integrally formed with the port portion 4 and the neck portion 3 is placed between two flexible synthetic resin sheets 11 from above, and the base portion 7 of the neck portion 3 is placed. And a sheet 11 in contact with the electrode 13, the insulator 14, the free electrode 15, the insulator 14, and the electrode 13 are arranged in parallel in the longitudinal direction of the neck 3 in this order. Pressing grooves 16 are respectively formed in the length direction of the upper and lower portions, and the insulator 14 is formed by forming a semicircular groove portion 17 in the lateral direction of the pressing grooves 16 and deeper than the pressing grooves 16. When a high frequency is applied by pressing with the mold 12, a line of electric force is generated between the supply electrode (S) of the electrode 13 and the ground electrode (E), and the free electrode 15 exposed to the high frequency electric field is applied to the free electrode 15. And an eddy current is induced. As a result, the temperature of the free electrode surface portion 20 rises rapidly due to the application of a high frequency, and the sheet 11 is heated. Later, it can be guided to increase the dielectric loss. Accordingly, the sheet 11 made of PE (polyethylene) or PP (polypropylene) having a small dielectric loss can be melted and welded in a short time by accelerating the dielectric heat generation without prior heat treatment as described above.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の医療用バック１の概略図FIG. 1 is a schematic view of a medical bag 1 of the present invention.

【図２】シート１１に注入部８の首部３を装着する際の
概略図FIG. 2 is a schematic diagram when the neck 3 of the injection unit 8 is mounted on the seat 11.

【図３】シート１１に注入部８の首部３をシート１１に
装着し、上下の口部金型１２で挟持して、押圧し、高周
波を印加した後の概略図FIG. 3 is a schematic diagram after the neck portion 3 of the injection unit 8 is attached to the sheet 11, is sandwiched between upper and lower mouth dies 12, pressed, and high frequency is applied.

【図４】シート１１の間に注入部８の首部３を置いて、
上下の口部金型１２の間に配置した時の断面図及び配線
図FIG. 4 places the neck 3 of the injection section 8 between the sheets 11,
Sectional view and wiring diagram when arranged between upper and lower mouth molds 12

【図５】口部金型１２の斜視図FIG. 5 is a perspective view of a mouth mold 12;

【図６】図３の各拡大図FIG. 6 is an enlarged view of each of FIGS.

【図７】図６のＡ−Ａの断面図FIG. 7 is a sectional view taken along the line AA in FIG. 6;

【図８】袋状本体２の輪郭を形取った、二次溶着部２３
を示す概略図FIG. 8 shows a secondary welding portion 23 in which the outline of the bag-shaped main body 2 is formed.
Schematic showing the

【符号の説明】[Explanation of symbols]

１ 医療用バック ２ 袋状本体 ３ 首部 ４ ポート部 ７ 基部 ８ 注入部 ９ 突部 １１ シート １２ 口部金型 １３ 電極 １４ 絶縁体 １５ フリー電極 １６ 押圧溝 １７ 溝部 １８ パーツフィーダー １９ 電源 ２０ フリー電極表面部 ２１ 不要なシート部 ２２ 一次溶着部 ２３ 二次溶着部 ２４ 切断線 DESCRIPTION OF SYMBOLS 1 Medical back 2 Bag-shaped main body 3 Neck 4 Port part 7 Base 8 Injection part 9 Protrusion 11 Sheet 12 Mould 13 Electrode 14 Insulator 15 Free electrode 16 Pressing groove 17 Groove 18 Parts feeder 19 Power supply 20 Free electrode surface Part 21 Unnecessary sheet part 22 Primary welding part 23 Secondary welding part 24 Cutting line

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】次の工程によりなることを特徴とする医療
用バックの製造方法。 （１）二枚の合成樹脂製のシート１１またはインフレー
ションチューブの間に、ポート部４と首部３を形成した
注入部８を上部方向から置いて、前記首部３の基部７と
これに接するシート１１またはインフレーションチュー
ブを、首部３の長さ方向に対して電極１３、絶縁体１
４、フリー電極１５、絶縁体１４、電極１３の順序で並
列に配置し、前記電極１３とフリー電極１５は首部３の
長さ方向にそれぞれ押圧溝１６を形成し、前記絶縁体１
４は前記押圧溝１６の横方向で且つ押圧溝１６より深い
半円状の溝部１７を形成することにより構成される上下
の口部金型１２により押圧して溶着する工程、（２）前
記（１）のシートを上下の枠金型により押圧して袋状本
体を形成する工程、1. A method of manufacturing a medical bag, comprising the following steps. (1) An injection part 8 having a port part 4 and a neck part 3 is placed between two synthetic resin sheets 11 or an inflation tube from above, and the base part 7 of the neck part 3 and the sheet 11 in contact therewith are placed. Alternatively, the inflation tube is connected to the electrode 13 and the insulator 1 with respect to the length direction of the neck 3.
4, the free electrode 15, the insulator 14, and the electrode 13 are arranged in parallel in this order, and the electrode 13 and the free electrode 15 form pressing grooves 16 in the longitudinal direction of the neck 3, respectively.
4 is a step of pressing and welding by upper and lower mouth molds 12 formed by forming a semicircular groove portion 17 in the lateral direction of the pressing groove 16 and deeper than the pressing groove 16; 1) pressing the sheet with upper and lower frame dies to form a bag-shaped body; 【請求項２】注入部８の首部３とシート１１またはイン
フレーションチューブを溶着する口部金型１２におい
て、前記首部３の長さ方向に対して電極１３、絶縁体１
４、フリー電極１５、絶縁体１４、電極１３の順序で並
列に配置し、前記電極１３とフリー電極１５は首部３の
長さ方向にそれぞれ押圧溝１６を形成し、前記絶縁体１
４は前記押圧溝１６の横方向で且つ押圧溝１６より深い
半円状の溝部１７を形成することにより構成した事を特
徴とする口部金型１２。2. In a mouth mold 12 for welding a neck 3 of an injection section 8 to a sheet 11 or an inflation tube, an electrode 13 and an insulator 1 are arranged in the longitudinal direction of the neck 3.
4, the free electrode 15, the insulator 14, and the electrode 13 are arranged in parallel in this order, and the electrode 13 and the free electrode 15 form pressing grooves 16 in the longitudinal direction of the neck 3, respectively.
Reference numeral 4 denotes a mouth mold 12 which is formed by forming a semicircular groove portion 17 in a lateral direction of the pressing groove 16 and deeper than the pressing groove 16.
JP3994199A 1999-02-18 1999-02-18 Manufacture of bag for medical use and mouth part mold Pending JP2000237280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3994199A JP2000237280A (en) 1999-02-18 1999-02-18 Manufacture of bag for medical use and mouth part mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3994199A JP2000237280A (en) 1999-02-18 1999-02-18 Manufacture of bag for medical use and mouth part mold

Publications (1)

Publication Number Publication Date
JP2000237280A true JP2000237280A (en) 2000-09-05

Family

ID=12566991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3994199A Pending JP2000237280A (en) 1999-02-18 1999-02-18 Manufacture of bag for medical use and mouth part mold

Country Status (1)

Country Link
JP (1) JP2000237280A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005160861A (en) * 2003-12-04 2005-06-23 Terumo Corp Mold for sealing medical container, method of manufacturing medical container, and 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
WO2014183875A1 (en) * 2013-05-15 2014-11-20 Johnson Controls Gmbh Method and device for applying at least one decorative strip to a seat cover
EP3047960A1 (en) * 2006-06-08 2016-07-27 Kiefel GmbH Tool for high frequency welding
WO2017137019A1 (en) * 2016-02-10 2017-08-17 Kiefel Gmbh Tool for hf welding, installation for producing a bag for medical purposes and method for operating such an installation

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JP2005160861A (en) * 2003-12-04 2005-06-23 Terumo Corp Mold for sealing medical container, method of manufacturing medical container, and medical container
JP4593906B2 (en) * 2003-12-04 2010-12-08 テルモ株式会社 Heat seal mold for medical container and method for manufacturing medical container
EP3047960A1 (en) * 2006-06-08 2016-07-27 Kiefel GmbH Tool for high frequency welding
US9505168B2 (en) 2006-06-08 2016-11-29 Kiefel Gmbh Tool for RF welding, arrangement of a central electrode and use of a central electrode
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
WO2014183875A1 (en) * 2013-05-15 2014-11-20 Johnson Controls Gmbh Method and device for applying at least one decorative strip to a seat cover
KR101768873B1 (en) 2013-05-15 2017-08-17 존슨 컨트롤스 게엠베하 Method and device for applying at least one decorative strip to a seat cover
US9969123B2 (en) 2013-05-15 2018-05-15 Johnson Controls Gmbh Method and device for applying at least one decorative strip to a seat cover
WO2017137019A1 (en) * 2016-02-10 2017-08-17 Kiefel Gmbh Tool for hf welding, installation for producing a bag for medical purposes and method for operating such an installation
CN109070482A (en) * 2016-02-10 2018-12-21 凯孚尔有限公司 For the tool of HF welding, it is used to prepare the device of medical bag and the method for operating the device
US10800109B2 (en) 2016-02-10 2020-10-13 Kiefel Gmbh Tool for HF welding, installation for producing a bag for medical purposes and method for operating such an installation
CN109070482B (en) * 2016-02-10 2021-02-23 凯孚尔有限公司 Tool for HF welding, device for producing a medicinal bag and method for operating the device

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