JP2000094524A - Method for fusion bonding resin film and package bag obtained by the method - Google Patents

Method for fusion bonding resin film and package bag obtained by the method

Info

Publication number
JP2000094524A
JP2000094524A JP10268335A JP26833598A JP2000094524A JP 2000094524 A JP2000094524 A JP 2000094524A JP 10268335 A JP10268335 A JP 10268335A JP 26833598 A JP26833598 A JP 26833598A JP 2000094524 A JP2000094524 A JP 2000094524A
Authority
JP
Japan
Prior art keywords
resin film
welding
resin
film
electrode
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
JP10268335A
Other languages
Japanese (ja)
Inventor
Toyoaki Suzuki
豊明 鈴木
Hirokazu Iizuka
宏和 飯塚
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.)
Fujimori Kogyo Co Ltd
Original Assignee
Fujimori Kogyo Co Ltd
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 Fujimori Kogyo Co Ltd filed Critical Fujimori Kogyo Co Ltd
Priority to JP10268335A priority Critical patent/JP2000094524A/en
Publication of JP2000094524A publication Critical patent/JP2000094524A/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
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • 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
    • B29C65/18—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
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/80—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
    • B29C66/81263—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
    • 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
    • B29C65/8215—Tensile 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
    • B29C66/70—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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73713—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented bi-axially or multi-axially
    • 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
    • B29C66/8122—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 composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • 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)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To fusion bond a polyolefin resin by interposing a heating member having a specific dielectric power factor between a high frequency electrode and a fusion bonding surface. SOLUTION: A resin film has a fusion bonding surface in which a resin layer having a dielectric power factor of less than 0.01 at 23 deg.C and 40 MHz, and a polyolefin resin layer is used, for example, as the fusion bonding surface. As a heating member, a film or a sheet made of a resin having a permittivity of 0.01 or more at 23 deg.C and 40 MHz such as, for example, the film or the sheet of a polyvinyl chloride, a polyvinylidene chloride, nylon, polyurethane or the like is used. The resin films 4 are disposed so that the fusion bonding surface becomes a polyolefin resin layer between the electrode 1 and an insulating underlay 3, and the heating member 5 is interposed between the electrode 1 and the fusion bonding surface. In such an apparatus, when a current flows to the electrode, the heating member is heated by dielectric heating to heat the polyolefin resin layer of the bonding surface to be fusion bonded.

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】本発明はポリオレフィン系樹
脂等の誘電力率の小さい樹脂を溶着面とする樹脂フィル
ムの溶着方法及び該方法を用いて得られる包装袋に関
し、特に輸液バッグや血液バッグ等に使用されるポリオ
レフイン系樹脂フィルムを溶着するための溶着方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for welding a resin film having a resin having a low dielectric power factor such as a polyolefin resin as a welding surface, and a packaging bag obtained by using the method. The present invention relates to a welding method for welding a polyolefin-based resin film used in the above.

【０００２】[0002]

【従来技術】従来、輸液バッグや血液バッグなどの包装
袋は塩化ビニル系樹脂フィルムを高周波電流による溶着
によって製造されているが、使用後、廃棄時にダイオキ
シンや塩素ガスが発生し、社会的問題となっている。こ
のため塩化ビニル系樹脂に代わるものとしてポリオレフ
ィン系樹脂が使用されて来ている。しかし、ポリオレフ
ィン系樹脂は誘電力率が小さく、誘電加熱ができないた
め従来の溶着装置がそのまま使用できないというのが現
状である。そこで、従来の高周波電流により溶着装置を
使用するため種々の工夫がなされている。例えば、特開
平９−２８９０７８号公報には誘電加熱装置の電極を加
熱することによって、高周波誘電の内部加熱と電極の熱
による外部加熱を併用することによって電極の加熱効率
を向上させることが開示されている。しかし、電極を加
熱すると、被加熱体の誘電力率が変化し、コントロール
しにくいという欠点があった。2. Description of the Related Art Conventionally, packaging bags such as infusion bags and blood bags have been produced by welding a vinyl chloride resin film by high-frequency current. However, after use, dioxin and chlorine gas are generated at the time of disposal, which poses a social problem. Has become. For this reason, polyolefin resins have been used as alternatives to vinyl chloride resins. However, the current situation is that the conventional welding apparatus cannot be used as it is because the polyolefin resin has a small dielectric power factor and cannot perform dielectric heating. Therefore, various devices have been devised in order to use the welding device by the conventional high-frequency current. For example, Japanese Patent Application Laid-Open No. 9-289078 discloses that by heating an electrode of a dielectric heating device, internal heating of high-frequency dielectric and external heating by heat of the electrode are used in combination to improve the heating efficiency of the electrode. ing. However, when the electrode is heated, there is a disadvantage that the dielectric power factor of the object to be heated changes and it is difficult to control.

【０００３】[0003]

【発明が解決しようとする課題】本発明者は、従来の溶
着装置を用いて溶着面がポリオレフィン系樹脂である樹
脂フィルムを溶着するために種々検討した結果、高周波
電極と樹脂フィルムとの間に誘電力率の高いフィルム又
はシートを介在させ、高周波電圧を印加すると誘電力率
の高いフィルム又はシートは内部発熱し、この熱を利用
して溶着面がポリオレフィン系樹脂である樹脂フィルム
を加熱して溶着しうることを見出し、本発明を完成した
もので、本発明の目的は、従来の溶着装置を利用してポ
リオレフィン系樹脂層を有する樹脂フィルムを溶着する
方法、およびこの方法によって得られる包装袋を提供す
ることである。SUMMARY OF THE INVENTION The present inventor has conducted various studies to weld a resin film whose surface is a polyolefin resin using a conventional welding apparatus. When a high-frequency voltage is applied by interposing a film or sheet having a high dielectric power factor, the film or sheet having a high dielectric power factor generates heat internally, and by using this heat, the welding surface heats the resin film, which is a polyolefin resin. The present invention has been completed by finding that welding is possible, and an object of the present invention is to use a conventional welding apparatus to weld a resin film having a polyolefin-based resin layer, and a packaging bag obtained by this method. It is to provide.

【０００４】[0004]

【課題を解決するための手段】即ち、本発明は高周波加
熱装置を用いて２３℃、４０ＭＨｚにおける誘電力率が
０．０１未満の樹脂層を有する樹脂フィルムを溶着する
に当たり、高周波電極と樹脂フィルムとの間に、２３
℃、４０ＭＨｚにおける誘電力率が０．０１以上である
樹脂製の発熱部材を介在させることを特徴とする樹脂フ
ィルムの溶着方法であり、又、この溶着方法によって得
られる２３℃、４０ＭＨｚにおける誘電力率が０．０１
未満の樹脂層を有する樹脂フィルムの溶着方法を用いて
得られる包装袋、特に医療用の液体を包装するための包
装袋である。That is, the present invention relates to a method of welding a resin film having a resin layer having a dielectric power factor of less than 0.01 at 23 ° C. and 40 MHz using a high-frequency heating device. Between 23
A resin film welding method characterized by interposing a resin-made heating member having a dielectric power factor of 0.01 or more at 40 ° C. and 40 MHz, and a dielectric force at 23 ° C. and 40 MHz obtained by this welding method. Rate 0.01
A packaging bag obtained by using a method for welding a resin film having a resin layer of less than 1, particularly a packaging bag for packaging a medical liquid.

【０００５】[0005]

【発明の実施の態様】本発明で使用する高周波加熱装置
は、従来よりこの種の溶着装置として使用されているも
のであって、上部電極と下部電極との対向した一対の電
極を設けたもの、或いは、上部電極と定盤とよりなり、
該定盤上に絶縁下敷を載置したものである。絶縁下敷と
してはゴム及びゴムを綿布に塗布したもの、シリコン樹
脂をガラス繊維に含浸したもの、ポリエステル樹脂を紙
に塗布したもの、四弗化エチレン、ワニスを綿布に含浸
したもの又は紙に塗布したもの、フェノール樹脂板、ア
スベスト、セロファン、マイカ、ガラス等が使用されて
いる。特に絶縁下敷として弾性を有する材料は定盤の平
行度の緩衝材として有用である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The high-frequency heating apparatus used in the present invention has been conventionally used as this type of welding apparatus, and is provided with a pair of opposed electrodes of an upper electrode and a lower electrode. Or consist of an upper electrode and a surface plate,
An insulating underlay is placed on the surface plate. Rubber or rubber coated on cotton cloth, silicon resin impregnated on glass fiber, polyester resin coated on paper, ethylene tetrafluoride, varnish impregnated on cotton cloth or coated on paper , Phenolic resin plate, asbestos, cellophane, mica, glass and the like are used. In particular, a material having elasticity as an insulating underlay is useful as a cushioning material for the parallelism of the surface plate.

【０００６】溶着対象物としては、２３℃、４０ＭＨｚ
における誘電力率が０．０１未満の樹脂層を溶着面とし
て有する樹脂フィルムで、例えばポリオレフィン系樹脂
層を溶着面とする樹脂フィルムである。ポリオレフィン
系樹脂層の中でも、エチレン又はプロピレンの単一重合
体若しくはこれらを主成分とする共重合体よりなる樹脂
層が溶着面として用いられる。溶着対象物はこれらの樹
脂からなる単一体であっても良いが、これらの樹脂層を
表面層とする積層体であってもよい。積層体の具体例と
しては、（線状）低密度ポリエチレン、ポリプロピレ
ン、ポリプロピレン系ポリマーアロイ、ポリスチレンな
どのポリオレフィン系樹脂層を積層した物や、これらの
層とポリエステル、ナイロン、二軸延伸ポリプロピレン
などのフィルムに積層した物等が挙げられる。発熱部材
としては２３℃、４０ＭＨｚにおける誘電力率が０．０
１以上の大きな樹脂からなるフィルム又はシートであっ
て、具体的にはポリ塩化ビニル、ポリ塩化ビニリデン、
ナイロン、ポリウレタン等のフィルム又はシート、セル
ロースアセテート織布、ベークライト板である。この中
で、ポリ塩化ビニル、ポリ塩化ビニリデン、ナイロンな
どのフィルム又はシートがコスト的に有利であり、中で
もポリ塩化ビニルフィルム又はシートが誘電力率が最も
大きいので好ましい。これらのフィルム又はシートの厚
さはいずれも２０μｍ〜３ｍｍで、好ましくは２００μ
ｍ〜４００μｍである。厚さが薄いと耐熱性が小さく、
耐久性が小さい。又、厚さが厚いと、発熱に要する時間
が長く、コスト的にも不利となる。The object to be welded is 23 ° C., 40 MHz
Is a resin film having a resin layer having a dielectric power factor of less than 0.01 as a welding surface, for example, a resin film having a polyolefin resin layer as a welding surface. Among the polyolefin-based resin layers, a resin layer made of a homopolymer of ethylene or propylene or a copolymer containing these as a main component is used as a welding surface. The object to be welded may be a single body made of these resins, or may be a laminate having these resin layers as surface layers. Specific examples of the laminate include a laminate of polyolefin resin layers such as (linear) low-density polyethylene, polypropylene, polypropylene-based polymer alloy, and polystyrene, and a laminate of these layers with polyester, nylon, biaxially oriented polypropylene, or the like. Examples thereof include those laminated on a film. The heat generating member has a dielectric power factor of 0.0 at 23 ° C. and 40 MHz.
A film or sheet made of one or more large resins, specifically, polyvinyl chloride, polyvinylidene chloride,
Films or sheets of nylon, polyurethane, etc., woven cellulose acetate, and bakelite plates. Among them, films or sheets of polyvinyl chloride, polyvinylidene chloride, nylon, etc. are advantageous in cost, and among them, polyvinyl chloride films or sheets are preferable because they have the largest dielectric power factor. Each of these films or sheets has a thickness of 20 μm to 3 mm, preferably 200 μm.
m to 400 μm. When the thickness is thin, heat resistance is small,
Low durability. On the other hand, if the thickness is large, the time required for heat generation is long, which is disadvantageous in cost.

【０００７】本発明においては高周波電流を流して発熱
部材を発熱させ、通常１５０℃〜２２０℃とし、これに
よって、溶着面であるポリオレフィン系樹脂層を溶着す
る。発熱部材は、上述のように、高周波電流によって発
熱するため繰り返し使用すると劣化する。従って、発熱
部材は容易に交換できるようにすることが好ましく、好
ましい態様としては電極に着脱可能に取り付けたり、或
いは発熱部材をフィルム状とし、電極の前を一方より他
方に順次送られるようにする。このようなポリオレフィ
ン系樹脂の溶着方法の適用範囲は特に限定されるもので
はないが、ポリオレフィン系樹脂フィルムを溶着して包
装袋を形成する場合に最も好都合であり、包装袋として
は血液バッグや輸液バッグに適用することによって従来
使用されていたポリ塩化ビニルからなる血液バッグや輸
液バッグに代替することができる。In the present invention, a high-frequency current is applied to cause the heat-generating member to generate heat, usually at 150 ° C. to 220 ° C., thereby welding the polyolefin resin layer which is the welding surface. As described above, the heat generating member is degraded when repeatedly used because it generates heat by the high-frequency current. Therefore, it is preferable that the heat-generating member can be easily replaced. In a preferred embodiment, the heat-generating member is detachably attached to the electrode, or the heat-generating member is formed into a film shape so that the front of the electrode can be sequentially fed from one side to the other. . The application range of such a polyolefin resin welding method is not particularly limited, but is most convenient when a polyolefin resin film is welded to form a packaging bag, and a blood bag or an infusion solution is used as the packaging bag. By applying to a bag, it can be replaced with a blood bag or an infusion bag made of polyvinyl chloride which has been conventionally used.

【０００８】本発明に用いる溶着装置の一例を図もって
説明する。図１は本発明に用いる溶着装置の説明図であ
って、高周波電極１と定盤２とが対抗し、定盤２の上に
は絶縁下敷３が載置されている。高周波電極１と絶縁下
敷３の間に溶着面がポリオレフィン系樹脂層となるよう
に樹脂フィルム４、４を置く。高周波電極１と溶着面と
の間に発熱部材５を介在させる。発熱部材５はロール状
とし、一方より他方に巻取られるようにする。このよう
な装置において、高周波電極に電流を流すと、発熱部材
は誘電加熱により発熱し、溶着面のポリオレフィン系樹
脂層を加熱して溶着する。An example of a welding apparatus used in the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a welding apparatus used in the present invention. A high-frequency electrode 1 and a surface plate 2 are opposed to each other, and an insulating underlay 3 is placed on the surface plate 2. The resin films 4 and 4 are placed between the high-frequency electrode 1 and the insulating base 3 so that the welding surface becomes a polyolefin-based resin layer. The heating member 5 is interposed between the high-frequency electrode 1 and the welding surface. The heat-generating member 5 is formed in a roll shape so that one of the heat-generating members 5 can be wound around the other. In such an apparatus, when a current is applied to the high-frequency electrode, the heat generating member generates heat by dielectric heating and heats and welds the polyolefin resin layer on the welding surface.

【０００９】例示した装置は、発熱部材を電極側に設け
たが、発熱部材は絶縁下敷上にあってもよいし、両側に
あってもよい。また、発熱部材をロール状としたが、枚
葉であってもよい。何れの場合であっても同一箇所が繰
り返し加熱されると発熱部材は劣化する場合があるので
前後及び／又は左右に位置を変えることができるように
しておくことが好ましい。なお、セルロースアセテート
やベークライトは耐熱性に優れるので、これらの樹脂よ
りなる発熱部材は電極や絶縁下敷に取付けておいても良
い。In the illustrated device, the heat-generating member is provided on the electrode side, but the heat-generating member may be on an insulating underlay or on both sides. Further, the heat generating member is in the form of a roll, but may be a single sheet. In any case, if the same portion is repeatedly heated, the heat generating member may be deteriorated. Therefore, it is preferable that the position of the heat generating member can be changed back and forth and / or left and right. Since cellulose acetate and bakelite have excellent heat resistance, a heating member made of such a resin may be attached to an electrode or an insulating underlay.

【００１０】[0010]

【実施例】次に実施例をもって本発明を具体的に説明す
る。 実施例１〜８ 図１に示した溶着装置を使用して表１に示されている構
成フィルム同士を溶着する。適用した高周波の周波数は
４０．６８ＭＨｚ、電圧は４００ボルトで圧力は４．０
ｋｇ／ｃｍ2である。溶着は３秒間電圧を印加して加熱
し、冷却は電圧印加を止め、そのまま３秒間放置した。
また、表１において、強度はインストロン型引張強度試
験機を用い、５ｍｍ／分の速度で剥離角度９０゜で測定
した時の溶着部の強度である。Next, the present invention will be described in detail with reference to examples. Examples 1 to 8 The constituent films shown in Table 1 are welded using the welding apparatus shown in FIG. The applied high frequency was 40.68 MHz, the voltage was 400 volts and the pressure was 4.0.
kg / cm 2 . For welding, a voltage was applied for 3 seconds for heating, and for cooling, the voltage application was stopped, and the device was left as it was for 3 seconds.
In Table 1, the strength is the strength of the welded portion when measured at a peeling angle of 90 ° at a speed of 5 mm / min using an Instron type tensile strength tester.

【００１１】[0011]

【表１】 [Table 1]

【００１２】[0012]

【発明の効果】以上述べたように、本発明は、高周波加
熱装置を用いて溶着面にポリオレフィン系樹脂層を有す
る樹脂フィルムを溶着するに当たり、高周波電極と溶着
面との間に誘電力率の高い発熱部材を介在させることに
よって、従来の高周波加熱装置を利用して、ポリオレフ
ィン系樹脂層を溶着することが出来、これによって、ポ
リオレフィン系樹脂フィルムを用いることにより従来使
用されていた塩化ビニル樹脂フィルムよりなる血液バッ
グや輸液バックの代替用バッグとして使用することが出
来、その結果、塩化ビニル樹脂フィルムの包装袋が有し
ている環境に対する問題点等を解決することが出来た。As described above, according to the present invention, when a resin film having a polyolefin-based resin layer is welded to a welding surface using a high-frequency heating device, the dielectric power factor between the high-frequency electrode and the welding surface is reduced. By interposing a high heat generating member, a polyolefin resin layer can be welded using a conventional high frequency heating device, and thus, a polyvinyl chloride resin film conventionally used by using a polyolefin resin film is used. It could be used as a substitute bag for a blood bag or an infusion bag, and as a result, the environmental problems and the like of the vinyl chloride resin film packaging bag could be solved.

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

【図１】 本発明の溶着装置の説明図である。FIG. 1 is an explanatory view of a welding device of the present invention.

【符号の説明】[Explanation of symbols]

１ 高周波電極 ２ 定盤 ３ 絶縁下敷 ４ 樹脂フィルム ５ 溶着面 ６ 発熱部材 DESCRIPTION OF SYMBOLS 1 High frequency electrode 2 Surface plate 3 Insulating base 4 Resin film 5 Welding surface 6 Heating member

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F211 AA03 AA04 AA11 AA15 AA24 AA29 AD05 AD08 AG01 AG03 AG06 AG07 AH54 AH63 TA01 TC09 TC14 TC17 TD11 TN13 TN14 TQ01 TQ04  ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 4F211 AA03 AA04 AA11 AA15 AA24 AA29 AD05 AD08 AG01 AG03 AG06 AG07 AH54 AH63 TA01 TC09 TC14 TC17 TD11 TN13 TN14 TQ01 TQ04

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 高周波加熱装置を用いて２３℃、４０Ｍ
Ｈｚにおける誘電力率が０．０１未満の樹脂層を有する
樹脂フィルムを溶着するに当たり、高周波電極と樹脂フ
ィルムとの間に、２３℃、４０ＭＨｚにおける誘電力率
が０．０１以上である樹脂製の発熱部材を介在させるこ
とを特徴とする樹脂フィルムの溶着方法。1. A high-frequency heating device at 23.degree.
In welding a resin film having a resin layer having a dielectric power factor of less than 0.01 at 23 Hz, between the high-frequency electrode and the resin film, at 23 ° C., a resin material having a dielectric power factor at 40 MHz of 0.01 or more. A method for welding a resin film, wherein a heating member is interposed. 【請求項２】 前記発熱部材がポリ塩化ビニル、ポリ塩
化ビニリデン、ナイロンからなる群から選ばれた１種以
上の樹脂からなるフィルム又はシートである請求項１記
載の樹脂フィルムの溶着方法。2. The method according to claim 1, wherein the heat generating member is a film or a sheet made of at least one resin selected from the group consisting of polyvinyl chloride, polyvinylidene chloride, and nylon. 【請求項３】 上記溶着される樹脂フィルムがポリオレ
フィン系樹脂層よりなる溶着面を有するフィルムであ
り、且つ、上記溶着される樹脂フィルムが包装材料であ
る請求項１又は請求項２記載の樹脂フィルムの溶着方
法。3. The resin film according to claim 1, wherein the resin film to be welded is a film having a welding surface made of a polyolefin resin layer, and the resin film to be welded is a packaging material. Welding method. 【請求項４】 上記包装材料が医療用の液体を包装する
ために用いられるものであることを特徴とする請求項３
記載の樹脂フィルムの溶着方法。4. The packaging material according to claim 3, wherein the packaging material is used for packaging a medical liquid.
The method for welding a resin film according to the above. 【請求項５】 請求項１〜請求項４記載の樹脂フィルム
の溶着方法を用いて得られる包装袋。5. A packaging bag obtained by using the resin film welding method according to claim 1.
JP10268335A 1998-09-22 1998-09-22 Method for fusion bonding resin film and package bag obtained by the method Pending JP2000094524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10268335A JP2000094524A (en) 1998-09-22 1998-09-22 Method for fusion bonding resin film and package bag obtained by the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10268335A JP2000094524A (en) 1998-09-22 1998-09-22 Method for fusion bonding resin film and package bag obtained by the method

Publications (1)

Publication Number Publication Date
JP2000094524A true JP2000094524A (en) 2000-04-04

Family

ID=17457124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10268335A Pending JP2000094524A (en) 1998-09-22 1998-09-22 Method for fusion bonding resin film and package bag obtained by the method

Country Status (1)

Country Link
JP (1) JP2000094524A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010280076A (en) * 2009-06-02 2010-12-16 Toyo Seikan Kaisha Ltd Electrode for high frequency dielectric heating welding, high frequency dielectric heating welding apparatus, and high frequency dielectric heating welding method
JP2016112251A (en) * 2014-12-16 2016-06-23 旭化成メディカル株式会社 Method for manufacturing medical filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010280076A (en) * 2009-06-02 2010-12-16 Toyo Seikan Kaisha Ltd Electrode for high frequency dielectric heating welding, high frequency dielectric heating welding apparatus, and high frequency dielectric heating welding method
JP2016112251A (en) * 2014-12-16 2016-06-23 旭化成メディカル株式会社 Method for manufacturing medical filter

Similar Documents

Publication Publication Date Title
US20100209024A1 (en) Coated fabric from monoaxially drawn plastic tapes and bag produced therefrom
WO2015111736A1 (en) Gusset bag, method for producing gusset bag, and method for joining laminate
TWI247665B (en) Biaxially oriented saturated polyester film, method of manufacturing the same, laminate of biaxially oriented saturated polyester film and method of making the same
JP2004018101A (en) Paper cup and its manufacturing method
JP2017217764A (en) Packaging bag sealing method and packaging bag
CN111164024B (en) Packaging body and film
JP2000094524A (en) Method for fusion bonding resin film and package bag obtained by the method
JPWO2021090950A1 (en) Adhesive film for metal terminals, method for manufacturing adhesive film for metal terminals, metal terminals with adhesive film for metal terminals, power storage devices using the adhesive film for metal terminals, and methods for manufacturing power storage devices
JP2004330573A (en) Laminate
JP2001297749A (en) Lead wire member for sheet battery, material for manufacturing lead wire member and manufacturing method of material for manufacturing lead wire member
EP3183113A1 (en) A flexible container and a process for making a flexible container
JP4491424B2 (en) Heat sealing method
JP2006027627A (en) Bag for microwave oven heating
JP3812596B2 (en) Sheet-like oxygen absorber and method for producing the same
JPS63242627A (en) High-frequency welder
JP3673901B2 (en) High frequency welding method of polypropylene sheet and insulating material used in this method
JPH06155690A (en) Method of lamination
TWI846781B (en) Method of forming seal with polyethylene based film structure and article comprising seal formed with polyethylene based film structure using the same
EP0495729A2 (en) Composite substrate for medical container
JP7007921B2 (en) Barrier paper cup
JP2904573B2 (en) Laminate and developer container excellent in tearability
JPH07112495A (en) Manufacture of air-permeable packaging bag
JP2003118021A (en) Heat-adhesive sheet and packaging material
JPS58217319A (en) Welding of non-polar synthetic resin film
JP2782415B2 (en) Bonding of plastics by high frequency dielectric heating

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050725

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070507

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070522

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20071009