CH683954A5 - Sealing seaming - uses reusable eddy current layer carrier between HF pad and sealing material for dissipation of the HF - Google Patents

Sealing seaming - uses reusable eddy current layer carrier between HF pad and sealing material for dissipation of the HF Download PDF

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Publication number
CH683954A5
CH683954A5 CH1152/93A CH115293A CH683954A5 CH 683954 A5 CH683954 A5 CH 683954A5 CH 1152/93 A CH1152/93 A CH 1152/93A CH 115293 A CH115293 A CH 115293A CH 683954 A5 CH683954 A5 CH 683954A5
Authority
CH
Switzerland
Prior art keywords
sealing
eddy current
current layer
sealing material
jaw
Prior art date
Application number
CH1152/93A
Other languages
German (de)
Inventor
Urs Ernst
Ernst Alfred Graf
Claudius Dr Dietzsch
Heinz Kuehni
Juerg Dr Frey
Leo Luetzelschwab
Jean-Pierre Buettiker
Bernd Fischer
Original Assignee
Industrieorientierte Forsch
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 Industrieorientierte Forsch filed Critical Industrieorientierte Forsch
Priority to CH1152/93A priority Critical patent/CH683954A5/en
Publication of CH683954A5 publication Critical patent/CH683954A5/en

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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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/32—Induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • 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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—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
    • B29C66/81433—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 being toothed, i.e. comprising several teeth or pins, or being patterned
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
    • 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
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/03—Forms or constructions of security seals
    • G09F3/0376—Forms or constructions of security seals using a special technique to detect tampering, e.g. by ultrasonic or optical 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B29C66/80—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
    • B29C66/81—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
    • B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81262—Electrical and dielectric properties, e.g. electrical conductivity

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Package Closures (AREA)

Abstract

For a hf seal, an eddy current layer carrier is positioned between the hf pad and the sealing material, to generate a hf dissipation through the hf generator. The eddy current layer carrier is in contact with the sealing material to heat it in the sealing zone and give the sealing action. Also claimed are two-dimensional or three-dimensional strips as the eddy current layer carriers. USE/ADVANTAGE - The method is for providing a sealed seam with a sealing material which is a non-hf inductive activated material using inductive HF sealing appts. for sealing packaging materials. The technique gives an effective sealing seam with an eddy current layer carrier which can be used again.

Description

1 1

CH 683 954 A5 CH 683 954 A5

2 2nd

Beschreibung description

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zur Herstellung von HF-Siegelverbindungen gemäss den Patentansprüchen 1 und 6. The present invention relates to a method and an apparatus for producing HF sealed connections according to patent claims 1 and 6.

Nach PS-DE 3 040 028 ist eine HF-Siegeleinrichtung zum Versiegeln von Verpackungsmaterial bekannt, bei welcher zwei induktiv gekoppelte Windungen des HF-Generators mit dem Kern integriert sind. Damit lassen sich zwei Verbundfolien versiegeln sofern mindestens eine der Verbundfolien eine elektrisch leitende Schicht aufweist. According to PS-DE 3 040 028, an HF sealing device for sealing packaging material is known, in which two inductively coupled turns of the HF generator are integrated with the core. Two composite foils can thus be sealed if at least one of the composite foils has an electrically conductive layer.

Nach PS-US 4 637 199 ist eine HF-Siegeleinrichtung und ein entsprechendes Verfahren bekannt, womit Verbundfolien, bestehend aus mindestens zwei Kunststofflagen und einer von den Kunststofflagen umgebenen Metallfolie, in einem Wirbelstromfeld versiegelt werden. Dieses Verfahren ist geeignet für hohe Repetitionsraten, was beispielsweise in der Verpackungsindustrie erwünscht ist. According to PS US Pat. No. 4,637,199, an HF sealing device and a corresponding method are known, by means of which composite foils consisting of at least two plastic layers and a metal foil surrounded by the plastic layers are sealed in an eddy current field. This method is suitable for high repetition rates, which is desirable in the packaging industry, for example.

Nachteilig ist jedoch bei beiden erwähnten Verfahren, dass nur Siegelmaterialsysteme mit einer elektrisch leitenden Schicht siegelbar sind und dass die notwendige Metallfolie, in welcher die Wirbelstromverluste stattfinden, über welche eine gezielte Wärmeentwicklung erfolgen kann, bei der Entsorgung des Verpackungsmaterials in Form des Rezy-klierens empfindlich stört. Die Verbundfolie muss umständlich aufgetrennt werden, was die Entsorgung ausserordentlich aufwendig und unrentabel gestaltet. However, it is disadvantageous in the two methods mentioned that only sealing material systems with an electrically conductive layer can be sealed and that the necessary metal foil, in which the eddy current losses take place, via which targeted heat development can take place, is sensitive to the disposal of the packaging material in the form of recycling disturbs. The composite film has to be separated laboriously, which makes disposal extremely complex and unprofitable.

Nach PS-FR 2 637 837 ist ein dielektrisches Schweissverfahren für Magnetkarten bekannt. Ein Verbund, bestehend aus einem Polykarbonatfilm und einem Thermoplast, wird zwischen den Siegelbacken bei Siegeldrucken von 100-1000 N/cm2 verarbeitet. Die Siegelzeiten liegen bei 10 s und stellen einen Nachteil dieses Verfahrens dar. Zudem wird die Geschwindigkeit des Verfahrens limitiert durch die im Verfahren frei gesetzte Wärme, welche im Material dissipieren muss, bevor ein neuer Siegelvorgang gestartet werden kann. Im weiteren müssen die verwendeten Folien Anforderungen bezüglich dielektrischer Eigenschaften erfüllen, was die Anwendbarkeit des Verfahrens stark einschränkt. According to PS-FR 2 637 837, a dielectric welding process for magnetic cards is known. A composite consisting of a polycarbonate film and a thermoplastic is processed between the sealing jaws at sealing pressures of 100-1000 N / cm2. The sealing times are 10 s and represent a disadvantage of this process. In addition, the speed of the process is limited by the heat released in the process, which must dissipate in the material before a new sealing process can be started. Furthermore, the films used must meet requirements with regard to dielectric properties, which severely limits the applicability of the method.

Im weitern ist ein Wärmeimpulsverfahren (Impuls-schweissung) zum Heisssiegeln und Schweissen von Packstoffen bekannt, bei dem die für die Packstoffverbindung erforderliche Wärme von kurzzeitig erhitzten Werkzeugen geringer Wärmekapazität an den Packstoff abgegeben wird. Dabei wird die Wärmeerzeugung durch einen kurzen Stromstoss in einem zum Heizband ausgebildeten Widerstandsdraht erzielt. Nachteilig sind die thermische Trägheit und lange Siegelzeiten. Zudem ist das Verfahren beschränkt auf einfache Linearsiegelnähte. Furthermore, a heat pulse method (pulse welding) for heat sealing and welding packaging materials is known, in which the heat required for the packaging material connection is given off to the packaging material by tools which are heated briefly and have a low thermal capacity. The heat generation is achieved by a short current surge in a resistance wire designed as a heating tape. Thermal inertia and long sealing times are disadvantageous. The process is also limited to simple linear sealing seams.

Die Aufgabe der Erfindung ist es, ein Verfahren und eine Vorrichtung zur Herstellung von HF-Sie-gelverbindungen vorzuschlagen, bei welchen zwischen einer HF-Backe und einem Siegelmaterialsystem ein Wirbelstromschichtträger positioniert wird, in welchem mitteis eines HF-Generators eine HF-Verlustleistung erzeugt wird. Der Wirbelstromschichtträger wird mit dem Siegelmaterialsystem in Kontakt gebracht, wodurch das Material in der Siegelzone erwärmt und der Siegelvorgang bewirkt wird. The object of the invention is to propose a method and a device for producing HF-seal connections, in which an eddy current layer support is positioned between an HF jaw and a sealing material system, in which an HF power loss is generated by means of an HF generator . The eddy current layer support is brought into contact with the sealing material system, as a result of which the material in the sealing zone is heated and the sealing process is brought about.

Erfindungsgemäss wird diese Aufgabe mit einem Verfahren gemäss dem Wortlaut des Patentanspruches 1 und einer Vorrichtung gemäss dem Wortlaut des Patentanspruches 6 gelöst. According to the invention, this object is achieved with a method according to the wording of claim 1 and a device according to the wording of claim 6.

Es zeigen: Show it:

Fig. 1 Querschnitt durch eine Siegelvorrichtung während des Siegelvorganges Fig. 1 cross section through a sealing device during the sealing process

Fig. 2 Draufsicht auf eine Siegelvorrichtung Fig. 3 Wirbelstromschichtträger auf planarer Unterlage als 2-dimensionaler Streifen ausgebildet Fig. 2 top view of a sealing device. Fig. 3 eddy current layer carrier formed on a planar base as a 2-dimensional strip

Fig. 4 Wirbelstromschichtträger auf zylindrischer Unterlage als 3-dimensionaler Streifen ausgebildet Fig. 4 eddy current layer support formed on a cylindrical base as a 3-dimensional strip

Fig. 5 Erstes Ausführungsbeispiel einer Siegelvorrichtung in schematischer Darstellung mit Wirbelstromschichtträger als Endlosband Fig. 5 First embodiment of a sealing device in a schematic representation with eddy current layer support as an endless belt

Fig. 6 Zweites Ausführungsbeispiel einer Siegelvorrichtung in schematischer Darstellung mit bandförmigem Wirbelstromschichtträger Fig. 6 Second embodiment of a sealing device in a schematic representation with a band-shaped eddy current layer support

Fig. 7 Drittes Ausführungsbeispiel einer Siegelvorrichtung in schematischer Darstellung mit walzenförmiger HF-Backe und einer Kombination von 2-dimensionalem und 3-dimensionalem Wirbelstromschichtträger Fig. 7 Third embodiment of a sealing device in a schematic representation with a roller-shaped HF jaw and a combination of 2-dimensional and 3-dimensional eddy current layer support

Fig. 1 zeigt einen Querschnitt durch eine Siegelvorrichtung während des Siegelvorganges. Sie besteht aus einer HF-Backe 1 mit einer eingelegten Leiterschlaufe 2, welche mit einem HF-Generator verbunden ist, und einem Gegenhalter 3. Zwischen der HF-Backe und dem Gegenhalter befindet sich ein Siegelmaterialsystem 4, welches aus den Folien Fig. 1 shows a cross section through a sealing device during the sealing process. It consists of an HF jaw 1 with an inserted conductor loop 2, which is connected to an HF generator, and a counter holder 3. Between the HF jaw and the counter holder there is a sealing material system 4, which consists of the foils

6 und 7, der Siegelzone 8 und dem Material 9 in der Siegelzone besteht. Zwischen der HF-Backe 1 und dem Siegelmaterialsystem 4 ist ein Wirbelstromschichtträger 10 positioniert, welches aus einem dünnen elektrisch leitenden Material besteht. Der Wirbelstromschichtträger ist aus einer Stahlfolie oder vorzugsweise aus einer Alufolie gefertigt. Es ist wesentlich, dass der Wirbelstromschichtträger 10 elektrisch von der Leiterschlaufe 2 isoliert ist, damit im Wirbelstromschichtträger durch das in der Leiterschlaufe erzeugte Wechselmagnetfeld Wirbelströme erzeugt werden. Durch diese Wirbelströme erwärmt sich bekannterweise der Wirbelstromschichtträger. Diese Wärme wird in das mit dem Wirbelstromschichtträger in Kontakt stehende Siegelmaterialsystem übertragen. Dabei wird das in der Siegelzone 8 befindliche Material 9, welches aus den Materialien der Folien 6 und 7 besteht, aufgeschmolzen. 6 and 7, the sealing zone 8 and the material 9 in the sealing zone. An eddy current layer carrier 10, which consists of a thin electrically conductive material, is positioned between the HF jaw 1 and the sealing material system 4. The eddy current layer support is made from a steel foil or preferably from an aluminum foil. It is essential that the eddy current layer carrier 10 is electrically insulated from the conductor loop 2, so that eddy currents are generated in the eddy current layer carrier by the alternating magnetic field generated in the conductor loop. As is known, the eddy current layer carrier is heated by these eddy currents. This heat is transferred to the sealing material system in contact with the eddy current layer support. The material 9 located in the sealing zone 8, which consists of the materials of the foils 6 and 7, is melted.

Fig. 2 zeigt die Draufsicht auf eine Siegelvorrichtung in schematischer Darstellung. Auf der HF-Bak-ke 1 befindet sich der Wirbelstromschichtträger 10 mit der Siegelzone 8. Darüber sind die Folien 6 und Fig. 2 shows a top view of a sealing device in a schematic representation. The eddy current layer carrier 10 with the sealing zone 8 is located on the HF bak-ke 1

7 angedeutet. 7 indicated.

An Hand der Fig. 1 und Fig. 2 wird im folgenden die Funktionsweise der Siegelvorrichtung erklärt: The mode of operation of the sealing device is explained below with reference to FIGS. 1 and 2:

Üblicherweise wird nach dem Einbringen des Siegelmaterialsystems 4 zwischen die HF-Backe 1 mit Wirbelstromschichtträger 10 und Gegenhalter 3 die Siegelvorrichtung unter Druck geschlossen. An- Usually, the sealing device is closed under pressure after the sealing material system 4 has been introduced between the HF jaw 1 with eddy current layer support 10 and counter-holder 3. At-

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schliessend wird der HF-Generator kurzzeitig, typischerweise während 50 ms, in Betrieb gesetzt, um das Material 9 in der Siegelzone 8 aufzuschmelzen. Durch den Druck des Gegenhalters 3 auf das Siegelmaterialsystem 4 werden die beiden Folien 6 und 7 versiegelt. Nachher wird die Siegelvorrichtung geöffnet und das Siegeimaterialsystem entfernt, womit der Siegelvorgang beendet ist. the HF generator is then briefly started up, typically for 50 ms, in order to melt the material 9 in the sealing zone 8. The two films 6 and 7 are sealed by the pressure of the counter holder 3 on the sealing material system 4. Afterwards the sealing device is opened and the sealing material system is removed, whereby the sealing process is ended.

Die Vorteile des erfindungsgemässen Verfahrens bestehen darin, dass damit sämtliche Thermoplaste oder Siegellacke versiegelbar sind, ohne dass eine elektrisch leitende Schicht im Siegeimaterialsystem erforderlich ist. Damit lassen sich auch Kunststoffe mit schlechten dielektrischen Eigenschaften verarbeiten, wie etwa Polyethylen oder Polypropylen. Das Verfahren zeichnet sich ausserdem durch kurze Siegelzeiten aus, welche typischerweise um 50 ms liegen. Dadurch ist es für hohe Taktzahlen hervorragend geeignet, wie sie in der Verpackungsindustrie gefordert werden. Ein weiterer Vorteil besteht in der Verwendung von kalten Siegelwerkzeugen (HF-Backe, Gegenhalter), wodurch ein spezieller Aufwärmvorgang vor dem Maschinenstart entfällt. Zudem müssen bei einem Maschinenstopp die Siegelwerkzeuge nicht vom Siegeimaterialsystem getrennt werden. Nach einem Neustart entfallen ferner die meist üblichen Anfahrverlustpackungen. Ein weiterer Vorteil liegt darin, dass durch die sehr geringe Wärmekapazität des Wirbelstromschichtträgers dieser wesentlich rascher abkühlt als der Heizdraht beim Wärmeimpulsverfahren, wodurch auch bei hohen Taktzahlen ein Abkühlen der Siegelnaht unter noch geschlossenen Siegelbacken möglich ist. Dies gestattet beispielsweise das Verarbeiten von Monofolien sowie das Erzeugen von Siegelnähten ohne Schrumpfungen am Nahtrand. Durch die sehr kurzen Siegelzeiten ist eine Wärmebeeinflussung des Füllgutes praktisch ausgeschlossen. The advantages of the method according to the invention are that all thermoplastics or sealing lacquers can be sealed with it, without the need for an electrically conductive layer in the sealing material system. It can also be used to process plastics with poor dielectric properties, such as polyethylene or polypropylene. The process is also characterized by short sealing times, which are typically around 50 ms. This makes it ideally suited for the high cycle rates that are required in the packaging industry. Another advantage is the use of cold sealing tools (HF jaw, counter holder), which eliminates the need for a special warm-up process before starting the machine. In addition, the sealing tools do not have to be separated from the sealing material system when the machine is stopped. After a restart, the usual start-up loss packs are no longer required. Another advantage is that due to the very low heat capacity of the eddy current layer carrier, the latter cools down much more quickly than the heating wire in the heat pulse method, which means that the sealing seam can be cooled even under high sealing cycles with the sealing jaws still closed. This allows, for example, the processing of monofilms and the creation of sealed seams without shrinking at the seam edge. The very short sealing times practically rule out any influence on the heat of the contents.

Vorteilhaft erweist sich ausserdem die Entsorgung gebrauchter Verpackungen. Dadurch dass keine elektrisch leitende Schicht in der Verpackung eingesiegelt ist, lassen sich die verwendeten Kunststoffe in einfacher Weise der Wiederverwertung zuführen. The disposal of used packaging has also proven to be advantageous. Since no electrically conductive layer is sealed in the packaging, the plastics used can be recycled in a simple manner.

Fig. 3 zeigt einen Wirbelstromschichtträger, welcher als 2-dimensionaler Streifen auf pianarer Unterlage ausgebildet ist. Der Wirbelstromschichtträger kann in der Formgebung im weitesten Sinne frei gewählt werden, d.h. durch die Wahl der Form kann die Wärmeentwicklung im Siegeimaterialsystem gesteuert werden. 3 shows an eddy current layer support which is designed as a 2-dimensional strip on a pianar base. The eddy current layer support can be chosen freely in the broadest sense, i.e. The heat development in the sealing material system can be controlled by the choice of the shape.

Fig. 4 zeigt einen Wirbelstromschichtträger, welcher als 3-dimensionaler Streifen auf zylindrischer Unterlage ausgebildet ist. Der Wirbelstromschichtträger 20 ist hier auf einer scheibenförmigen HF-Backe 21 positioniert. Fig. 4 shows an eddy current layer support, which is designed as a 3-dimensional strip on a cylindrical base. The eddy current layer carrier 20 is positioned here on a disk-shaped HF jaw 21.

Die vielfältigen Ausführungsformen der Wirbelstromschichtträger - wie in Fig. 3 und Fig. 4 angedeutet - können mit anderen bisher bekannten Siegelverfahren nicht in der gleich einfachen Weise realisiert werden. The various embodiments of the eddy current layer supports - as indicated in FIGS. 3 and 4 - cannot be realized in the same simple manner with other sealing methods known to date.

Fig. 5 zeigt ein erstes Ausführungsbeispiel einer Siegel Vorrichtung in schematischer Darstellung. Die HF-Backe 1, der Gegenhalter 3 und die Folien 6 Fig. 5 shows a first embodiment of a sealing device in a schematic representation. The HF jaw 1, the counter holder 3 and the foils 6

und 7 entsprechen der Anordnung in Fig. 1. Der Wirbelstromschichtträger 22 ist hier als Endlosband ausgelegt, welches über die Rollen 23 geführt wird. Zwischen den Siegelvorgängen wird der Wirbelstromschichtträger schrittweise neu-positioniert. Nachdem der Siegelvorgang am Bandende beendet ist, folgt der nächste wieder mit dem Wirbelstromschichtträger am Bandanfang, womit der Wirbelstromschichtträger erneut als aktiver Träger eingesetzt werden kann. and 7 correspond to the arrangement in FIG. 1. The eddy current layer carrier 22 is designed here as an endless belt which is guided over the rollers 23. The eddy current layer support is gradually repositioned between the sealing processes. After the sealing process at the end of the strip has ended, the next one follows with the eddy current layer carrier at the beginning of the band, with which the eddy current layer carrier can be used again as an active carrier.

Fig. 6 zeigt ein zweites Ausführungsbeispiel einer Siegelvorrichtung in schematischer Darstellung. Die HF-Backe 1, der Gegenhalter 3 und die Folien 6 und 7 entsprechen der Anordnung in Fig. 1. Der Wirbelstromschichtträger 22 ist hier bandförmig ausgelegt. Er wird von der Rolle 24 an der HF-Backe 1 vorbei auf die Rolle 25 geführt. Wenn der gesamte Wirbelstromschichtträger auf der Rolle 25 aufgespult ist, so kann diese erneut als Rolle 24 eingesetzt werden, oder aber entsorgt werden. Fig. 6 shows a second embodiment of a sealing device in a schematic representation. The HF jaw 1, the counter holder 3 and the foils 6 and 7 correspond to the arrangement in FIG. 1. The eddy current layer carrier 22 is designed here in the form of a band. It is guided from the roll 24 past the HF jaw 1 onto the roll 25. If the entire eddy current layer support is wound on the roll 25, then this can be used again as a roll 24, or can be disposed of.

Fig. 7 zeigt ein drittes Ausführungsbeispiel einer Siegelvorrichtung in schematischer Darstellung. Sie besteht aus der HF-Backe 1, dem Gegenhalter 3, den Folien 6 und 7 und dem Wirbelstromschichtträger. Die HF-Backe ist hier als Zylinder ausgebildet, auf welchem sich nun sowohl der Wirbelstromschichtträger 27 in 2-dimensionaler Form als auch der Wirbelstromschichtträge 28 in 3-dimensionaler Form aufgebracht ist. Eine derartige Anordnung findet beispielsweise in den bekannten Siegelwalzenmaschinen Anwendung. Fig. 7 shows a third embodiment of a sealing device in a schematic representation. It consists of the HF jaw 1, the counter holder 3, the foils 6 and 7 and the eddy current layer support. The HF jaw is designed here as a cylinder, on which both the eddy current layer carrier 27 in two-dimensional form and the eddy current layer supports 28 in three-dimensional form are now applied. Such an arrangement is used, for example, in the known sealing roller machines.

Die Anordnungen der Fig. 5 und Fig. 7 eignen sich beispielsweise vorzüglich zur Erzeugung von Endlosnähten in einer Form-Fill-Seal-Maschine. The arrangements in FIGS. 5 and 7 are, for example, particularly suitable for producing endless seams in a form-fill-seal machine.

Erfindungswesentlich ist, dass zwischen der HF-Backe und dem Siegeimaterialsystem einen Wirbelstromschichtträger positioniert wird, in welchem mittels eines HF-Generators eine HF-Verlustleistung erzeugt wird. Dieser Wirbelstromschichtträger wird mit dem Siegeimaterialsystem in Kontakt gebracht, wodurch das Material in der Siegelzone derart erwärmt wird, dass dadurch der Siegelvorgang bewirkt wird. It is essential to the invention that an eddy current layer carrier is positioned between the RF jaw and the sealing material system, in which an RF power loss is generated by means of an RF generator. This eddy current layer support is brought into contact with the sealing material system, as a result of which the material in the sealing zone is heated in such a way that the sealing process is thereby brought about.

Das erfindungsgemässe Verfahren ermöglicht eine Wiederverwendung der Wirbelstromschichtträger und findet Anwendung bei der Erzeugung von Siegelnähten an nicht HF-induktiv aktivierbaren Siegelmaterialsystemen. Andererseits können bestehende induktive HF-Siegelanlagen mit geringfügigen Umrüstarbeiten eine wesentliche Erweiterung des Einsatzgebietes erfahren. Damit lassen sich auch nicht-HF-induktiv aktivierbare Siegelmaterialsysteme verarbeiten. The method according to the invention enables the eddy current layer supports to be reused and is used in the production of sealing seams on sealing material systems which cannot be activated by HF induction. On the other hand, existing inductive HF sealing systems can undergo a substantial expansion of the area of application with minor conversion work. It can also be used to process non-HF inductively activated sealing material systems.

Claims (11)

PatentansprücheClaims 1. Verfahren zur Herstellung von HF-Siegelverbindungen mittels einer HF-Backe, einem HF-Generator, einem Siegeimaterialsystem und einem Gegenhalter, dadurch gekennzeichnet, dass zwischen der HF-Backe und dem Siegeimaterialsystem ein Wirbelstromschichtträger positioniert wird, in welchem mittels des HF-Generators eine HF-Verlustleistung erzeugt wird, dass der Wirbelstromschichtträger mit dem Siegeimaterialsystem in Kontakt ge-1. A method for producing RF sealed connections by means of an RF jaw, an RF generator, a sealing material system and a counterholder, characterized in that an eddy current layer carrier is positioned between the RF jaw and the sealing material system, in which by means of the RF generator an RF power loss is generated that the eddy current layer support is in contact with the sealing material system 55 1010th 1515 2020th 2525th 3030th 3535 4040 4545 5050 5555 6060 6565 33rd 55 CH 683 954 A5CH 683 954 A5 bracht wird, wodurch das Material in der Siegelzone erwärmt wird, und dass dadurch der Siegelvorgang bewirkt wird.is brought, whereby the material in the sealing zone is heated, and that this causes the sealing process. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Wirbelstromschichtträger nach dem Siegelvorgang wiederverwendbar ist.2. The method according to claim 1, characterized in that the eddy current layer support is reusable after the sealing process. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass der Wirbelstromschichtträger bandförmig oder als Endlosband ausgeführt wird.3. The method according to claims 1 and 2, characterized in that the eddy current layer support is designed in the form of a belt or as an endless belt. 4. Anwendung des Verfahrens nach den Ansprüchen 1 bis 3 zur Erzeugung von Siegelnähten an nicht-HF-induktiv aktivierbaren Siegelmaterialsystemen.4. Application of the method according to claims 1 to 3 for the production of sealing seams on non-HF inductively activatable sealing material systems. 5. Anwendung des Verfahrens nach den Ansprüchen 1 bis 3 zur Erweiterung des Einsatzbereiches bestehender induktiver HF-Siegelanlagen auf nicht-HF-induktiv aktivierbare Siegelmaterialsysteme.5. Application of the method according to claims 1 to 3 for expanding the area of application of existing inductive HF sealing systems to non-HF inductively activatable sealing material systems. 6. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 3, bestehend aus einer HF-Backe, einem HF-Generator, einem Siegeimaterialsystem und einem Gegenhalter, dadurch gekennzeichnet, dass zwischen der HF-Backe und dem Siegeimaterialsystem ein Wirbelstromschichtträger positioniert ist.6. Device for performing the method according to one of claims 1 to 3, consisting of an RF jaw, an RF generator, a sealing material system and a counterholder, characterized in that an eddy current layer support is positioned between the RF jaw and the sealing material system. 7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Wirbelstromschichtträger als Streifen ausgebildet ist.7. The device according to claim 6, characterized in that the eddy current layer support is designed as a strip. 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Streifen zweidimensional oder dreidimensional ausgebildet ist.8. The device according to claim 7, characterized in that the strip is two-dimensional or three-dimensional. 9. Vorrichtung nach den Ansprüchen 6 bis 8, dadurch gekennzeichnet, dass die HF-Backe rotierend ausgeführt ist.9. Device according to claims 6 to 8, characterized in that the HF jaw is designed to rotate. 10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die HF-Backe scheibenförmig ausgeführt ist.10. The device according to claim 9, characterized in that the HF jaw is disc-shaped. 11. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die HF-Backe walzenförmig ausgeführt ist.11. The device according to claim 9, characterized in that the HF jaw is roller-shaped. 55 1010th 1515 2020th 2525th 3030th 3535 4040 4545 5050 5555 6060 6565 44th
CH1152/93A 1993-04-17 1993-04-17 Sealing seaming - uses reusable eddy current layer carrier between HF pad and sealing material for dissipation of the HF CH683954A5 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028951A1 (en) * 1996-02-09 1997-08-14 Heinz Stampfer Process for the production of weld seams on plastic parts, especially a pipe-welding process, pipeline system with pipe connections produced according to this process as well as the use of an hf generator for the carrying out of this process
EP1342551A1 (en) * 2002-03-05 2003-09-10 M-Tek, Inc. Heat sealing device
DE19848945B4 (en) * 1998-10-23 2005-10-13 G.H. Induction Deutschland Induktions-Erwärmungs-Anlagen GmbH Method and device for joining thermoplastic materials, in particular plastics with substrates

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE485212A (en) * 1900-01-01
GB650698A (en) * 1947-10-16 1951-02-28 Mark Brainos Improvements in or relating to the manufacture of skins or cases for sausages or other food stuffs
US2589777A (en) * 1949-07-09 1952-03-18 William F Stahl Plastic-sealing apparatus
US2640796A (en) * 1952-03-26 1953-06-02 Langer Nicholas Method of bonding
FR1166776A (en) * 1957-02-15 1958-11-14 Method and device for producing longitudinal welds in heat-weldable materials
FR1566693A (en) * 1968-03-27 1969-05-09
EP0107096A2 (en) * 1982-09-30 1984-05-02 Heller, William C., Jr. Method and apparatus for heat sealing plastic members
JPS60937A (en) * 1983-06-17 1985-01-07 Brother Ind Ltd Electromagnetic induction continuous welding machine
JPS62261423A (en) * 1986-05-08 1987-11-13 Takao Yoshida Bonding method
EP0264663A2 (en) * 1986-10-15 1988-04-27 KMK Karl Mägerle Lizenz AG Method and apparatus for producing tubular articles, especially packaging tubes
GB2198082A (en) * 1986-12-01 1988-06-08 Nissho Kk Method of welding thermoplastic resin
WO1992002330A1 (en) * 1990-08-01 1992-02-20 Geo. A. Hormel & Company Method and apparatus for sealing of thermoplastic lid and container

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE485212A (en) * 1900-01-01
GB650698A (en) * 1947-10-16 1951-02-28 Mark Brainos Improvements in or relating to the manufacture of skins or cases for sausages or other food stuffs
US2589777A (en) * 1949-07-09 1952-03-18 William F Stahl Plastic-sealing apparatus
US2640796A (en) * 1952-03-26 1953-06-02 Langer Nicholas Method of bonding
FR1166776A (en) * 1957-02-15 1958-11-14 Method and device for producing longitudinal welds in heat-weldable materials
FR1566693A (en) * 1968-03-27 1969-05-09
EP0107096A2 (en) * 1982-09-30 1984-05-02 Heller, William C., Jr. Method and apparatus for heat sealing plastic members
JPS60937A (en) * 1983-06-17 1985-01-07 Brother Ind Ltd Electromagnetic induction continuous welding machine
JPS62261423A (en) * 1986-05-08 1987-11-13 Takao Yoshida Bonding method
EP0264663A2 (en) * 1986-10-15 1988-04-27 KMK Karl Mägerle Lizenz AG Method and apparatus for producing tubular articles, especially packaging tubes
GB2198082A (en) * 1986-12-01 1988-06-08 Nissho Kk Method of welding thermoplastic resin
WO1992002330A1 (en) * 1990-08-01 1992-02-20 Geo. A. Hormel & Company Method and apparatus for sealing of thermoplastic lid and container

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 141 (M-691)(2988) 23. April 1988 & JP,A,62 261 423 ( TAKAO YOSHIDA ) 13. November 1987 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 114 (M-380)(1837) 18. Mai 1985 & JP,A,60 937 ( BROTHER KOGYO K.K. ) 7. Januar 1985 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028951A1 (en) * 1996-02-09 1997-08-14 Heinz Stampfer Process for the production of weld seams on plastic parts, especially a pipe-welding process, pipeline system with pipe connections produced according to this process as well as the use of an hf generator for the carrying out of this process
DE19848945B4 (en) * 1998-10-23 2005-10-13 G.H. Induction Deutschland Induktions-Erwärmungs-Anlagen GmbH Method and device for joining thermoplastic materials, in particular plastics with substrates
EP1342551A1 (en) * 2002-03-05 2003-09-10 M-Tek, Inc. Heat sealing device

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