CH411320A - Durch Impulsströme beheizter Heizkörper - Google Patents

Durch Impulsströme beheizter Heizkörper

Info

Publication number
CH411320A
CH411320A CH1382963A CH1382963A CH411320A CH 411320 A CH411320 A CH 411320A CH 1382963 A CH1382963 A CH 1382963A CH 1382963 A CH1382963 A CH 1382963A CH 411320 A CH411320 A CH 411320A
Authority
CH
Switzerland
Prior art keywords
heating tape
carrier body
heater according
electrically
heating
Prior art date
Application number
CH1382963A
Other languages
English (en)
Inventor
Hans Dipl Ing Hirzel
Original Assignee
Sig Schweiz Industrieges
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 Sig Schweiz Industrieges filed Critical Sig Schweiz Industrieges
Priority to CH1382963A priority Critical patent/CH411320A/de
Priority to GB45862/64A priority patent/GB1091917A/en
Priority to DESCH36088A priority patent/DE1296781B/de
Publication of CH411320A publication Critical patent/CH411320A/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or 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
    • B29C65/38—Impulse heating
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/80—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
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—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
    • 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
    • B29C66/8181—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 cooling constructional aspects
    • B29C66/81811—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 cooling 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
    • B29C66/81—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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/62—Heating elements specially adapted for furnaces
    • H05B3/64—Heating elements specially adapted for furnaces using ribbon, rod, or wire heater
    • 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
    • B29C66/80—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
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Description


  
 



  Durch Impulsströme beheizter Heizkörper
Die Erfindung betrifft einen durch Impulsströme beheizten Heizkörper zum Verschweissen von elektrisch nicht leitenden, heisssiegelfähigen Folien mit einem Heizbändchen.



   Während die ebenfalls bekannten, durch eingebaute Heizelemente indirekt beheizten Heizkörper für ähnliche Zwecke dauernd auf einer annähernd konstanten Temperatur gehalten werden, sollen bei Impulsheizung die Heizkörper möglichst kühl bleiben.



  Die dem Heizelement nur im Moment des Schweissvorganges impulsweise zugeführte Energie soll möglichst weitgehend auf das zu verschweissende Objekt übertragen werden, und das mit diesem in Berührung stehende Heizbändchen soll sich wieder unter die Schweisstemperatur abkühlen, bevor es von der Schweissnaht abgehoben wird. Die nicht in die Schweissnaht übertragene Wärme soll so rasch als möglich in den Trägerkörper des Heizbändchens abfliessen.



   Die Erfindung bezweckt, die Leistungsfähigkeit von derartigen Impulsheizkörpern zu steigern, d. h. eine raschere Folge von   Arbeitstakten    bei einwandfreier Qualität der Schweissnaht zu ermöglichen.



   Die Erfindung ist dadurch gekennzeichnet, dass das Heizbändchen auf einem thermisch gut leitenden Tragkörper gespannt ist und im Vergleich zum Trägerkörper eine sehr kleine Masse aufweist, zum Zwecke, eine rasche Wärmeableitung der im Heizbändchen durch den Stromimpuls erzeugten Wärme zu erzielen.



   In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes mit Varianten dargestellt.



  Es zeigen:
Fig. 1 einen Abschnitt eines erfindungsgemässen Heizkörpers und
Fig. 2 und 3 je ein Teilstück des Heizkörpers in grösserem Massstab mit verschiedenartigen Ausnehmungen im das Heizbändchen stützenden Teil des Trägerkörpers.



   Der Heizkörper umfasst einen thermisch gut leitenden Trägerkörper 1, z. B. aus Eisen oder Leichtmetall, der einen Kopf 2 von kleinerer Breite aufweist, dessen obere Fläche 2a leicht gewölbt ausgebildet ist. Über der Fläche 2a liegt ein dünnes Heizbändchen 3, das durch zwei mittels Schrauben 4 befestigte Leisten 5 festgeklemmt ist. Das Heizbändchen 3 wird in Längsrichtung von Stromimpulsen durchflossen, die durch Zuleitungen 6 zugeführt werden. Damit der Strom nicht in den Trägerkörper 1 abfliesst, muss dieser gegenüber dem Heizbändchen 3 elektrisch isoliert sein. Anderseits soll ein möglichst guter Wärmeabfluss vom Heizbändchen auf den Trägerkörper gewährleistet sein, damit das Heizbändchen, nachdem es durch einen Stromimpuls erhitzt wurde, und die Schweissung durchgeführt ist, möglichst rasch wieder abkühlt.

   Es hat sich beispielsweise als zweckmässig erwiesen, auf die Unterseite des Heizbändchens 3 eine elektrisch isolierende Schicht 3a (Fig. 2 bzw. 3), z. B. Aluminiumoxyd, Glas oder Keramik aufzubringen, z. B. aufzuspritzen.



  Die Schicht könnte selbstverständlich auch auf die Oberfläche des Kopfes 2   aufgebracht    werden. Bei Anwendung einer Aluminium-Legierung wird die elektrisch isolierende Aluminiumoxyd-Schicht mit Vorteil durch anodische Oxydation erzeugt.



   Anderseits könnte das Heizbändchen 2 auch aus elektrisch nicht leitendem Material bestehen, auf dessen äussere Oberfläche eine elektrisch leitende Schicht aufgedampft oder aufgepritzt ist. Wie die Fig. 2 und 3 zeigen, können an der Oberfläche des Kopfes 2 Ausnehmungen 7 bzw. 8 angeordnet sein, die sich über die ganze Länge oder nur über einen gewissen Abschnitt des Kopfes 2 enstrecken können.



  Das Heizbändchen erhitzt sich dann an diesen Stel  len, an denen kein direkter Wärmeabfluss in den Trägerkörper stattfindet, rascher und höher. Es lassen sich auf diese Weise innerhalb der Schweisszone linienförmige Streifen mit besonders guter Bindung erzielen und damit hochwertige, wirklich dichte Nähte erreichen.



   Um zu verhindern, dass der Trägerkörper 1 sich zu stark erwärmt, kann er mit Hohlräumen, z. B.



  Längsbohrungen 9 (Fig. 1) ausgerüstet werden, durch die Kühlwasser oder Druckluft geleitet wird.

Claims (1)

  1. PATENTANSPRUCH Durch Impulsströme beheizter Heizkörper zum Verschweissen von elektrisch nicht leitenden, heisssiegelfähigen Folien mit einem Heizbändchen, dadurch gekennzeichnet, dass dieses auf einem thermisch gut leitenden Trägerkörper gespannt ist, wobei das Heizbändchen im Vergleich zum Trägerkörper eine sehr kleine Masse aufweist, zum Zwecke, eine rasche Wärmeableitung der im Heizbändchen durch den Stromimpuls erzeugten Wärme zu erzielen.
    UNTERANSPRÜCHE 1. Heizkörper nach Patentanspruch, dadurch gekennzeichnet, dass das Heizbändchen (3) aus elektrisch leitendem Material besteht und auf die Unterseite des Heizbändchens eine elektrisch isolierende Schicht aufgebracht ist.
    2. Heizkörper nach Patentanspruch, dadurch gekennzeichnet, dass das Heizbändchen (3) aus elektrisch nicht leitendem Material besteht und dass auf die Oberseite des Heizbändchens eine elektrisch leitende Schicht aufgebracht ist.
    3. Heizkörper nach Patentanspruch, dadurch gekennzeichnet, dass der Trägerkörper (1) aus elektrisch leitendem Material besteht und dass er mindestens an der Fläche (2a), die mit dem Heizbändchen (3) in Berührung kommt, eine elektrisch isolierende Schicht aufweist.
    4. Heizkörper nach Patentanspruch, dadurch gekennzeichnet, dass der Trägerkörper (1) im Bereich der beim Schweissen wirksamen Oberfläche des Heizbändchens Ausnehmungen (7, 8) aufweist.
    5. Heizkörper nach Patentanspruch, dadurch gekennzeichnet, dass der Trägerkörper (1) für den Durchfluss eines Kühlmittels bestimmte Hohlräume (9) aufweist.
    6. Heizkörper nach Patentanspruch, dadurch gekennzeichnet, dass die beim Schweissen wirksame Oberfläche des Heizbändchens gewölbt ist.
CH1382963A 1963-11-12 1963-11-12 Durch Impulsströme beheizter Heizkörper CH411320A (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH1382963A CH411320A (de) 1963-11-12 1963-11-12 Durch Impulsströme beheizter Heizkörper
GB45862/64A GB1091917A (en) 1963-11-12 1964-11-11 Improvements in or relating to heaters which are heated by impulse currents
DESCH36088A DE1296781B (de) 1963-11-12 1964-11-11 Durch Impulsstroeme beheizter Heizkoerper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1382963A CH411320A (de) 1963-11-12 1963-11-12 Durch Impulsströme beheizter Heizkörper

Publications (1)

Publication Number Publication Date
CH411320A true CH411320A (de) 1966-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH1382963A CH411320A (de) 1963-11-12 1963-11-12 Durch Impulsströme beheizter Heizkörper

Country Status (3)

Country Link
CH (1) CH411320A (de)
DE (1) DE1296781B (de)
GB (1) GB1091917A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412123A (en) * 1980-05-09 1983-10-25 Bell Telephone Laboratories, Incorporated Laminated electric heat generating member for reflow soldering devices
DE3936218A1 (de) * 1989-10-31 1991-05-02 Pkm Kunststoffverarbeitungsmas Verfahren und vorrichtung zum schweissen und/oder trennschweissen thermoplastischer kunststoffolien

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010040397A1 (en) * 2008-10-08 2010-04-15 Sidel S.P.A. Labelling machine for sleeve labels
KR20120117983A (ko) * 2009-04-10 2012-10-25 아쯔노브 사까모또 임펄스 실러의 세라믹스로 커버된 히터
CN102648131B (zh) * 2009-08-12 2014-11-26 西得乐独资股份公司 贴标机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412123A (en) * 1980-05-09 1983-10-25 Bell Telephone Laboratories, Incorporated Laminated electric heat generating member for reflow soldering devices
DE3936218A1 (de) * 1989-10-31 1991-05-02 Pkm Kunststoffverarbeitungsmas Verfahren und vorrichtung zum schweissen und/oder trennschweissen thermoplastischer kunststoffolien

Also Published As

Publication number Publication date
DE1296781B (de) 1969-06-04
GB1091917A (en) 1967-11-22

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