JP3145148B2 - 熱可塑性プラスチックで被覆された包装材料を密封する装置 - Google Patents

熱可塑性プラスチックで被覆された包装材料を密封する装置

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Publication number
JP3145148B2
JP3145148B2 JP26406391A JP26406391A JP3145148B2 JP 3145148 B2 JP3145148 B2 JP 3145148B2 JP 26406391 A JP26406391 A JP 26406391A JP 26406391 A JP26406391 A JP 26406391A JP 3145148 B2 JP3145148 B2 JP 3145148B2
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Japan
Prior art keywords
plane
sealing
inductor
conductor
packaging material
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Expired - Fee Related
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JP26406391A
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English (en)
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JPH06183419A (ja
Inventor
ポズナ ラズロ
ホルムストローム ゲルト
Original Assignee
テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム
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Publication of JPH06183419A publication Critical patent/JPH06183419A/ja
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—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
    • B29C66/81427—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 ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C65/3656—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 being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • 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
    • B29C65/3668—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 means for supplying heat to said heated elements which remain in the join, e.g. special induction coils
    • 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
    • B29C65/3672—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
    • B29C65/368—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 with a polymer coating
    • 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
    • B29C66/40—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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of 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
    • 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
    • B29C66/7232—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 comprising a non-plastics layer
    • B29C66/72321—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 comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/814—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
    • B29C66/81457—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 comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/80—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
    • B29C66/80—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
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2821/00—Use of unspecified rubbers as mould material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Laminated Bodies (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は金属フォイル、好ましく
はアルミニウムフォイル、の少なくとも２層を有する、
熱可塑性プラスチックによって被覆された包装材料を密
封するための装置であって、高周波電力給源に接続され
得る可動の誘導子と、可動のカウンタブロック即ちジョ
ーとを有し、前記誘導子が、第１の平面において平行し
且つ互いに僅かに離間された関係に保たれる少なくとも
２個の導体と、電気的に絶縁するキャリヤ部分とを有す
るものに係る。
【０００２】
【従来の技術及び発明が解決しようとする課題】熱可塑
性プラスチックの複数の外層を有しこれら外層が耐密性
及び耐久性に富む密封継目またはシームの形成のための
加熱及び圧縮ののち融着によって互いに対し密封され得
る包装材料を使用することは、包装業界において久しく
知られている。包装物生産の一形式は半加工品いわゆる
ブランクを使用し、これらブランクは品詰めされそして
頂部または代替的に底部において密封されたのち最終的
に形づくられる。これらプレハブ型のブランクは可能な
かぎり安価な包装を達成するために正確な寸法に裁断さ
れ、その結果として、品詰作業のあと密封さるべき帯域
は極めて狭い区域から構成される。互いに密封さるべき
二つの縁が一緒に圧縮されるとき、それらは完全には互
いに整合されず、従って密封が行わるべき区域がなお一
層減少される事態が起こり得る。恐らく、密封される縁
もまたいかなる環境下においても踏み越え（ｏｖｅｒｓ
ｔｅｐ）られてはならない部分、例えば折り曲げ線な
ど、を有し得る。
【０００３】通常、品詰めされたブランクの密封は熱風
を使用して行われる。これは多数の機械部品の使用を意
味し、そのことは、従って無菌包装物の生産が意図され
るときは、無菌状態に維持されなくてはならない部品が
より多いという単純な理由によって不利である。
【０００４】無菌包装物は、普通、薄い金属フォイル、
好ましくはアルミニウムフォイル、を有する包装材料か
ら形成される。包装材料が金属フォイルを有するとき
は、包装業界においてはやはり知られている技術である
誘導溶接を使用することが可能である。
【０００５】誘導溶接の技術は、交流電流を印加された
導体を包囲する磁場は隣接する導電材料中に誘導によっ
て電流を発生させ得、そしてそのことは、導電材料の抵
抗に応じて、多かれ少なかれ該導電材料の明白な加熱を
必然的に伴うという事実に基づく。従って、誘導溶接に
おいては、アルミニウムフォイルを有する積層物に隣接
する所望完成溶接部と同じ外形の誘導コイルが使用さ
れ、その後、積層物はそれとともに合体さるべき材料に
よって圧縮される。かくして、アルミニウムフォイルは
コイルの外形と一致するパターンを以て電流、周波数お
よび処理時間の好適な選択によって加熱され、前記材料
は所望温度、即ち熱可塑性プラスチック材料の隣接する
層が加熱されて融着するのに十分に高くされている温
度、または密封温度、即ち圧力下で合体された熱可塑性
プラスチック層が耐密性と耐久性とに富むシールまたは
シームを形成するように融着させられる温度、に達する
まで加熱され得る。
【０００６】しかし、従来の誘導子は連続するウェブ上
における溶接のためにもっともしばしば設計され、該ウ
ェブには横シームが中間スペースを配して２×２（ｔｗ
ｏ−ｂｙ−ｔｗｏ）様式で作られ、後に、該中間スペー
スにおいて前記ウェブが分離される。密封継目またはシ
ームのために利用可能の空間を制限して、予め切られた
ブランクに対して従来の誘導子を使用することを可能に
するには、より狭い磁極を有する誘導子を作ることが考
えられる。しかし、これは一般的に誘導子を冷却させる
ことにおいていくつかの問題を必然的に伴い、そしてさ
らにそのような誘導子は製造するのに一層困難でもあ
る。また、誘導子の２導体間のスペースはより狭くされ
るが、従って、信頼できる密封シームを形成するには、
より大きい電流が要求され、そしてこれはより大きい損
失が誘導子において生じることを意味する。
【０００７】本発明の一目的は、大きい電流損失または
誘導子の冷却に関する諸問題を生じさせることなしに極
めて狭い表面において密封を達成する誘導子を設計する
ことである。
【０００８】
【課題を解決するための手段】前記およびその他の諸目
的は、緒言によって説明されたタイプの装置が、前記導
体の少なくとも一個が、前記第１の平面に対し直角を成
す第２の平面において、他の導体より相当より大きい広
さを有するという特徴を付与されることにおいて本発明
に従って達成された。
【０００９】本発明の好適実施例は従属請求項に記載さ
れる諸特徴をさらに付与された。
【００１０】本発明の一好適実施例は添付図面を明細に
参照して以下においてさらにより詳細に説明されるであ
ろう。
【００１１】
【実施例】図面を参照すると、図１は本発明装置の誘導
子部分を示し、この部分は電気絶縁物質、好ましくはフ
ェライトを含有する鋳造された化合物、から製造された
実質的に平行六面体のキャリヤ部分２から構成される。
【００１２】キャリヤ部分２には、部分的にその表面上
に、電気的に相互接続される２個の導体３、４が配置さ
れる。一方の導体３は銅の管または棒から成る。他方の
導体４は銅板から成る。最初に言及された導体３はキャ
リヤ部分表面から直立するリッジ５を画成されることが
有利である。この直立するリッジ５は、密封作業間、包
装材料９に対して比較的強い圧力で押圧されかくしてよ
り良好な密封シーム即ち継目の実現に寄与する。
【００１３】第１の平面６と呼ばれる、キャリヤ部分２
の一平面において、前記２個の導体３、４は表面上でそ
れらの間に空間を有する概ね同等の幅の２部分として観
察される。第１の平面６に対し直角を成す第２の平面７
において、導体４は相当より広い幅の銅表面として見ら
れる。その幅は導体３の幅の少なくとも２倍である。一
好適実施例においては、導体４の幅は導体３の幅のおお
よそ３倍である。加熱比は幅の二乗であり、従って、該
好適実施例においては、９倍高い加熱が幅狭の導体４に
よって達成され、これと同時に、誘導子１の寸法は許容
限度内に維持され得る。
【００１４】キャリヤ部分２の一端内において、導体
３、４は一定の電気出力を供給し得る高周波電流給源
（図示されない）に対する接続部材８まで延ばされてお
り、該電流給源は最適溶接工程のために調整され得る。
キャリヤ部分２の他端内において、導体３、４はそれら
がコイルの一ターンを構成するように電気的に相互に接
続されている。
【００１５】図１に図解されたタイプの密封部分即ち誘
導子１は、所望の密封運動を遂行しそして所望の密封圧
力を加えるようにされる機械部分内に取付けられるよう
に計画される。換言すると、この密封部分１（それはし
ばしばシーリングジョーと呼ばれる）は、殆どの場合や
はり運動可能であるいわゆるカウンタジョー１０に向か
って相対運動を以て運動される。カウンタジョー１０は
圧力平衡装置として作用し得るように硬質ゴムから全体
的にまたは部分的に製作される。品詰めされた包装容器
ブランクの開端は包装材料９が可能最大幅に亙って合体
されるように形成される。上に言及されたシーリングジ
ョー１とカウンタジョー１０は、図３に示されるように
互いに向かって閉じられて、これらジョー１、１０は包
装材料９の密封さるべき部分を包囲する。そのような場
合、包装材料９は、導体３、４がそこで誘導子１のキャ
リヤ部分２の表面に見られる両平面６、７に当接する。
【００１６】誘導子即ちシーリングジョー１とカウンタ
ジョー１０は、圧縮された層状の包装材料９に圧力を及
ぼし、それと同時に熱が誘導子１によって密封区域に発
生される。
【００１７】高周波電流が誘導子１の両導体３、４によ
って構成される前記コイルを通過するとき、包装材料９
内の金属フォイル層中に電流が誘導によって発生され、
その結果として、前記金属フォイル層は急激に加熱され
そして隣接する熱可塑性プラスチック層に対して熱を提
供し、従って金属フォイル層は融解されそして隣接する
包装材料層の隣接内側熱可塑性プラスチック層に融着す
る。このような加熱は迅速且つ効率的に実現され、そし
て金属フォイル層は、原則的に、誘導コイルが一次巻線
を構成する変圧器内で短絡巻線を構成すると考えられ得
る。
【００１８】もし誘導子１が、誘導によって電流が発生
されるアルミニウムフォイル層に隣接して配置されるな
らば、アルミニウムフォイル層中の電流流路は導体３に
おいて最も特徴的に誘導体３の中央に位置し従って熱の
発生は導体３の幅に実質的に対応する幅狭区域１１に限
定されるであろう。第２の平面７における導体４の幅広
部分に面して、誘導電流は導体３の中央に位置される幅
狭区域１１より少なくとも３倍広い区域１２に分配され
る。電流は導体４においてより大きい表面区域に分散さ
れるから、区域１２に熱可塑性プラスチックの融点まで
加熱されず、従って導体４の幅広部分に当接する包装材
料９は融着及び密封の時点において何ら影響されない状
態に止どまるであろう。もし導体４が前記好適実施例に
おけるがごとく配置されるならば、包装材料９の集中的
で効率的なシールが達成されるであろう。包装材料９か
らさらに遠く離れて導体４が位置されるいかなるその他
の配置においても、特に誘導子１の両端へ向かって密封
効果が劣化する恐れがある。
【００１９】従って、本発明を採用するならば、縁が小
さくそしてシール本体のために利用可能である区域を踏
み越える（ｏｖｅｒｓｔｅｐ）ことが許されない極めて
限定された幅の誘導加熱によって生じさせられる密封ま
たは融着を実現することが可能である。それと同時に、
本誘導子１は効率的な様式で使用されそして耐密性と持
久性に富む密封シーム即ち継目が得られる。
【図面の簡単な説明】
【図１】本発明装置の誘導子部分の斜視図。
【図２】本発明装置の誘導子部分を示す概略断面図。
【図３】予め切られたブランクの縁において密封が実行
される態様を示す概略断面図。
【符号の説明】
１ 誘導子 ２ キャリヤ部分 ３ 導体 ４ 導体 ５ リッジ ６ 第１の平面 ７ 第２の平面 ８ 接続部材 ９ 包装材料 １０ カウンタジョー １１ 幅狭区域 １２ 区域
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B65B 51/10 B65B 51/22 B29C 65/00 - 65/46

Claims (5)

    (57)【特許請求の範囲】
  1. 【請求項１】 金属フォイルの少なくとも１層を有する
    熱可塑性プラスチックで被覆された包装材料（９）を密
    封する装置であって、高周波電流給源に接続され得る可
    動の誘導子（１）と、可動のカウンタブロック（１０）
    とを有し、前記誘導子（１）が、互いに僅かに離間され
    た関係を保って第１の平面（６）において平行して配置
    される少なくとも２個の導体（３，４）と、電気的に絶
    縁するキャリヤ部分（２）とを有するものにおいて、前
    記導体（３，４）の少なくとも一個（４）が前記第１の
    平面（６）に対して直角を成す第２の平面（７）におい
    て他の導体（３）より大きい広さを有することを特徴と
    する包装材料を密封する装置。
  2. 【請求項２】 請求項１に記載される装置において、前
    記第２の平面（７）における前記一個の導体（４）の幅
    が、前記他の導体（３）の幅の少なくとも２倍であるこ
    とを特徴とする包装材料を密封する装置。
  3. 【請求項３】 請求項１に記載される装置において、前
    記導体（３，４）の双方が前記第１の平面（６）におい
    て同じ幅を有することを特徴とする包装材料を密封する
    装置。
  4. 【請求項４】 請求項１に記載される装置において、前
    記第１の平面（６）と前記カウンタブロック（１０）と
    の間で密封が遂行されることを特徴とする包装材料を密
    封する装置。
  5. 【請求項５】 請求項１に記載される装置において、前
    記金属フォイルがアルミニウムフォイルであることを特
    徴とする包装材料を密封する装置。
JP26406391A 1990-10-11 1991-10-11 熱可塑性プラスチックで被覆された包装材料を密封する装置 Expired - Fee Related JP3145148B2 (ja)

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SE9003243-4 1990-10-11
SE9003243A SE500572C2 (sv) 1990-10-11 1990-10-11 Anordning för induktionssvetsning

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JPH06183419A JPH06183419A (ja) 1994-07-05
JP3145148B2 true JP3145148B2 (ja) 2001-03-12

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US (1) US5260535A (ja)
EP (1) EP0480405B1 (ja)
JP (1) JP3145148B2 (ja)
AT (1) ATE132074T1 (ja)
DE (1) DE69115829T2 (ja)
DK (1) DK0480405T3 (ja)
ES (1) ES2081412T3 (ja)
GR (1) GR3018547T3 (ja)
SE (1) SE500572C2 (ja)

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IT1260130B (it) * 1992-11-11 1996-03-28 Nordica Spa Struttura di stampo per la saldatura ad alta frequenza
US5365041A (en) * 1993-04-26 1994-11-15 Robotron Corporation Induction heating coil for bonding metal sheets
SE503486C2 (sv) * 1995-01-10 1996-06-24 Tetra Laval Holdings & Finance Rörlig anordning för att utföra en kontinuerlig längdskarvsvetsning på en förpackningsmaterialbana
SE505571C2 (sv) * 1995-12-20 1997-09-15 Tetra Laval Holdings & Finance Sätt och anordning vid längdskarvsförsegling med induktionsvärme av ett förpackningsämne av polymerbelagd metallplåt
SE507308C2 (sv) * 1995-12-20 1998-05-11 Tetra Laval Holdings & Finance Sätt och anordning för att åstadkomma en skarvförsegling av polymerbelagd aluminium
US6365883B1 (en) 1998-09-11 2002-04-02 Robotron Corporation U-shaped adhesive bonding apparatus
SE526058C8 (sv) * 2002-12-13 2005-07-27 Tetra Laval Holdings & Finance Förfarande och anordning för att tillverka förpackningar
SE527423C2 (sv) 2004-07-08 2006-02-28 Tetra Laval Holdings & Finance Metod och anordning för efterförsegling av förpackningsbehållare
SE0403038D0 (sv) * 2004-12-14 2004-12-14 Tetra Laval Holdings & Finance Anordning och metod för försegling
SE535799C2 (sv) * 2011-05-27 2012-12-27 Aa & R Carton Lund Ab Metod för tillverkning av en förpackning innefattande sammanfogning av en första och en andra materialbit
EP3241667B1 (en) 2016-05-02 2020-07-08 Tetra Laval Holdings & Finance S.A. Improved induction sealing system
RU2759707C2 (ru) 2017-05-30 2021-11-17 Тетра Лаваль Холдингз Энд Файнэнс С.А. Устройство для запечатывания верха упаковки для пищевого продукта и система для формирования и заполнения упаковки с пищевым продуктом
CN107263922A (zh) * 2017-06-09 2017-10-20 上海界龙永发包装印刷有限公司 纸铝塑无菌包材高频热封检测仪
EP3431268B1 (en) * 2017-07-17 2020-09-02 Tetra Laval Holdings & Finance S.A. Inductor coil for induction welding of a packaging material and method of manufacturing an inductor coil
US11370571B2 (en) 2017-07-18 2022-06-28 Tetra Laval Holdings & Finance S.A. Induction sealing device
US11548238B2 (en) 2018-09-10 2023-01-10 Tetra Laval Holdings & Finance S.A. Method for forming a tube and a method and a packaging machine for forming a package
JP7447123B2 (ja) 2018-09-11 2024-03-11 テトラ ラバル ホールディングス アンド ファイナンス エス エイ 密封されたパッケージを形成するためのパッケージ装置

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Also Published As

Publication number Publication date
DE69115829D1 (de) 1996-02-08
SE500572C2 (sv) 1994-07-18
SE9003243D0 (sv) 1990-10-11
ES2081412T3 (es) 1996-03-16
JPH06183419A (ja) 1994-07-05
ATE132074T1 (de) 1996-01-15
GR3018547T3 (en) 1996-03-31
EP0480405A1 (en) 1992-04-15
DE69115829T2 (de) 1996-05-23
DK0480405T3 (da) 1996-01-29
EP0480405B1 (en) 1995-12-27
SE9003243L (sv) 1992-04-12
US5260535A (en) 1993-11-09

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