CH398432A - Heating element arranged on a holder for sealing packages - Google Patents

Heating element arranged on a holder for sealing packages

Info

Publication number
CH398432A
CH398432A CH1074662A CH1074662A CH398432A CH 398432 A CH398432 A CH 398432A CH 1074662 A CH1074662 A CH 1074662A CH 1074662 A CH1074662 A CH 1074662A CH 398432 A CH398432 A CH 398432A
Authority
CH
Switzerland
Prior art keywords
heating element
holder
heating
insulating layer
element according
Prior art date
Application number
CH1074662A
Other languages
German (de)
Inventor
Hirzel Hans
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 CH1074662A priority Critical patent/CH398432A/en
Priority to GB32426/63A priority patent/GB991090A/en
Publication of CH398432A publication Critical patent/CH398432A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • 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
    • B29C66/40—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
    • 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
    • B29C66/816—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
    • B29C66/8182—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 thermal insulating constructional aspects
    • B29C66/81821—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 thermal 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
    • B29C66/01—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
    • B29C66/814—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
    • B29C66/81415—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 bevelled
    • B29C66/81419—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 bevelled and flat

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Resistance Heating (AREA)
  • Secondary Cells (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Processing Of Solid Wastes (AREA)

Description

       

  
 



  An einem Halter angeordnetes Heizelement zum Ab siegeln von Packungen
Die Erfindung betrifft ein an einem Halter angeordnetes Heizelement zum Absiegeln   heissiegelfähi-    ger Packungen.



   Bei den bekannten elektrisch beheizten, an einem Halter angeordneten Heizelementen zum Absiegeln von Packungen wird ein grosser Teil der zugeführten Wärme durch direkte Wärmeleitung über die Befesti  gungselemente,    auf die in unmittelbarer Nähe befindlichen Maschinenteile, z. B. Greifer, Transport- und Faltorgane und damit auch auf die Packungen abgeleitet. Dies wirkt sich besonders nachteilig aus, wenn der Inhalt der Packungen auf Wärme empfindlich ist.



   Da alle bekannten Heizelemente relativ grosse geheizte Flächen aufweisen, geht ein grosser Teil der Wärme auch durch Strahlung verloren, so dass oft an der   Versiegelungssteile    wegen der Wärmeverluste die Temperatur und die Wärmemenge nicht mehr ausreichen, um ein einwandfreies Versiegeln zu gewährleisten. Die Erfindung bezweckt, diese Nachteile zu beheben.



   Das   erfindungsgemässe    Heizelement zeichnet sich dadurch aus, dass zwischen Heizelement und Halter eine thermische Isolierschicht angeordnet ist, derart, dass keine metallische Berührung zwischen Halter und Heizelement   stattfindet.   



   Die geschilderten Nachteile der bekannten Heizelemente treten bei den erfindungsgemässen Ausführungen nicht auf, da das beheizte Element gegenüber die Halterungselemente wärmeisoliert, die Wärmeleitung in diese Richtung durch die Isolation weitgehend vermindert und Wärmeausstrahlung fast ausgeschaltet ist. Der Wärmeübergang findet konzentriert an der isolationsfreien   Arbeitsfläche    statt und steht fast vollkommen für den Schweissvorgang zur Verfügung.



  Dies ergibt eine Reduktion der erforderlichen Heizleistung.



   In den Zeichnungen sind zwei Ausführungsbeispiele des Erfindungsgegenstandes dargestellt. Es zeigen:
Fig. 1 einen Längsschnitt durch eine erste Ausführungsform eines in einem Halter angeordneten Heizelementes,
Fig. 2 einen Schnitt nach Linie   II;II    der Fig. 1,
Fig. 3 einen Schnitt nach Linie   III-III    der Fig. 1,
Fig. 4 ein Detail der Ausführungsform nach Fig. 1,
Fig. 5 einen Längsschnitt durch eine zweite Ausführungsform eines an einem Halter angeordneten Heizelementes und
Fig. 6 einen Schnitt nach Linie IV-IV der Fig. 5.



   Bei der   Ausführungsform    nach Fig. 1 ist in einem Metallstäbchen 1 ein gestreckter Heizleiter 2 mit pulverförmigem elektrischem Isolator 4 in einem Rohr 6 eingebettet. Das Rohr 6 samt dem Isolationsmaterial 4 und dem Heizleiter 2 kann im Laufe des Herstellungsprozesses durch Pressen, Schmieden, Ziehen oder Walzen in die gewünschte Form gebracht werden, wobei auch die Querschnittsform des Rohres beliebig ausgebildet werden kann. Das elektrische Isoliermaterial wird dabei   ausserordenflich    verdichtet und gewährleistet einen guten Wärmeübergang   vom    Heizleiter 2 über das elektrische Isoliermaterial 4 auf die Arbeitsfläche.

   Der plastische Deformationsvorgang kann soweit getrieben werden, dass dabei auch der Querschnitt des Heizleiters reduziert und damit eine Erhhöung des elektrischen Widerstandes erreicht wird.



   Bei der   Ausführiingsform    nach Fig. 1 handelt es sich um einen im Handel erhältlichen koaxialen Heiz  ieiterkomplex    von sehr kleinem Durchmesser. Der ganze   Heizleiterkomplex    ist in eine Nut eines trapezförmigen Metallprofiles mit einem Deckdraht 3 auf  der ganzen Länge eingelötet. Auf einer Seite ist der Heizleiter 2 isoliert, auf der anderen direkt mit dem Deckdraht 3 an der Lötstelle 3a elektrisch verbunden, wobei der Deckdraht 3 über das Ende des Profilstäbchens hinaus verlängert als Massenanschluss ausgeführt ist. Das isoliert auszuführende Ende des Heizleiterkomplexes ist derart ausgebildet, dass es in ein in das   Profilstäbohen    eingelassenes   Keramikröhrchen      7 mündet i (Fig. 4).

   Der Übergang des Anschlussdrah-    tes 8 auf das   Keramikröhrchen    7 ist durch eine allseitig verlötete Metallkappe 9 verstärkt.



   Die Länge des freien Heizleiterstückes zwischen dem Heizleiterkomplex und dem Anschlusskabel soll möglichst kurz gehalten werden, damit das nackte Heizleiterstück   thermisch    nicht   überlastet    wird.



  Durch eingepresstes   Aluminiumoxydpulver    oder ein   Isolierscheibchen    kann die Wärmeableitung dieses Teiles der Heizleitung verbessert werden.



   Das Heizelement 1 ist allseitig mit Ausnahme der Arbeitsfläche la mit einer thermischen Isolierschicht 5 umgeben, derart, dass keine metallische Berührung zwischen Halter 10 und Heizelement 1 stattfindet. Es wird in einem Halter 10 aus rostfreiem Stahl seiner ganzen Länge entlang gleichmässig festgespannt. Der Halter 10 ist durch einen Längsschlitz 11 und Querschlitze 12 derart aufgeteilt, dass mehrere Zonen entstehen, und eine jede Zone durch eine Schraube zusammengespannt werden kann.



   Die thermische Isolierschicht 5 ist aus mehreren Stücken zusammengesetzt und besteht z. B. aus Glimmerplättchen. Für die Isolierschicht 5 kann aber auch ein speziell gepresstes Profilstück, welches um das   Profilstäbchen    gepresst oder auf das letztere aufgeschoben wird, verwendet werden.



   Beim Ausführungsbeispiel nach Fig. 5 und 6 wird ein sogenanntes Panzerheizstäbchen verwendet. In diesem Fall, wo zwei Arbeitsflächen   lb,    lc des viereckigen Heizstäbchens 1 unisoliert bleiben, ist das Heizstäbchen 1 mit einer   fahneurrtigen    Verlängerung 11 versehen, damit es in einem Halter 14 fixiert werden kann. Zwei angrenzende Flächen des Heizstäbchens 12 und 13 und die Verlängerung 11 sind mit der thermischen Isolation 5 umgeben. Von den handelsüblichen Heizstäbchen unterscheidet sich das Stäbchen nach Fig. 5 und 6 durch seine spezielle Querschnittform und durch Verankerung der elektrischen Anschlüsse im Rohr mit lötbaren Keramikstopfen oder einem direkt eingeschmolzenen Pfropfen 15 aus gesintertem Glas.



   In den beiden beschriebenen Varianten werden Heizstäbchen verschiedener Ausführung als Wärme quellen verwendet. Selbstverständlich können aber in beiden Fällen Heizstäbchen beliebiger Art verwendet werden.   



  
 



  Heating element arranged on a holder for sealing off packages
The invention relates to a heating element arranged on a holder for sealing heat-sealable packs.



   In the known electrically heated, arranged on a holder heating elements for sealing packs, a large part of the heat supplied is supplied by direct heat conduction via the fastening elements on the machine parts located in the immediate vicinity, eg. B. grippers, transport and folding elements and thus also derived from the packs. This is particularly detrimental when the contents of the pack are sensitive to heat.



   Since all known heating elements have relatively large heated surfaces, a large part of the heat is also lost through radiation, so that the temperature and the amount of heat on the sealing parts are often no longer sufficient to ensure proper sealing because of the heat losses. The invention aims to remedy these disadvantages.



   The heating element according to the invention is characterized in that a thermal insulating layer is arranged between the heating element and the holder in such a way that there is no metallic contact between the holder and the heating element.



   The described disadvantages of the known heating elements do not occur in the designs according to the invention, since the heated element is thermally insulated from the mounting elements, the heat conduction in this direction is largely reduced by the insulation and heat radiation is almost eliminated. The heat transfer takes place in a concentrated manner on the insulation-free work surface and is almost entirely available for the welding process.



  This results in a reduction in the required heating power.



   Two exemplary embodiments of the subject matter of the invention are shown in the drawings. Show it:
1 shows a longitudinal section through a first embodiment of a heating element arranged in a holder,
FIG. 2 shows a section along line II; II of FIG. 1,
3 shows a section along line III-III of FIG. 1,
FIG. 4 shows a detail of the embodiment according to FIG. 1,
5 shows a longitudinal section through a second embodiment of a heating element arranged on a holder, and FIG
FIG. 6 shows a section along line IV-IV in FIG. 5.



   In the embodiment according to FIG. 1, an elongated heating conductor 2 with a powdery electrical insulator 4 is embedded in a tube 6 in a metal rod 1. The pipe 6 together with the insulation material 4 and the heating conductor 2 can be brought into the desired shape in the course of the manufacturing process by pressing, forging, drawing or rolling, with the cross-sectional shape of the pipe being able to be designed as desired. The electrical insulation material is extremely compacted and ensures good heat transfer from the heating conductor 2 via the electrical insulation material 4 to the work surface.

   The plastic deformation process can be driven to such an extent that the cross-section of the heating conductor is also reduced and thus an increase in the electrical resistance is achieved.



   The embodiment according to FIG. 1 is a commercially available coaxial heater complex of very small diameter. The entire heating conductor complex is soldered into a groove of a trapezoidal metal profile with a cover wire 3 along its entire length. The heating conductor 2 is insulated on one side and directly electrically connected to the cover wire 3 at the soldering point 3a on the other, the cover wire 3 being extended beyond the end of the profile rod as a ground connection. The end of the heating conductor complex, which is to be implemented insulated, is designed in such a way that it opens into a ceramic tube 7 embedded in the profiled rods i (FIG. 4).

   The transition from the connecting wire 8 to the ceramic tube 7 is reinforced by a metal cap 9 soldered on all sides.



   The length of the free heating conductor section between the heating conductor complex and the connection cable should be kept as short as possible so that the bare heating conductor section is not thermally overloaded.



  Pressed-in aluminum oxide powder or an insulating washer can improve the heat dissipation of this part of the heating cable.



   The heating element 1 is surrounded on all sides with the exception of the work surface 1 a with a thermal insulating layer 5 in such a way that there is no metallic contact between the holder 10 and the heating element 1. It is clamped evenly along its entire length in a holder 10 made of stainless steel. The holder 10 is divided by a longitudinal slot 11 and transverse slots 12 in such a way that several zones are created and each zone can be clamped together by a screw.



   The thermal insulating layer 5 is composed of several pieces and consists, for. B. from mica flakes. However, a specially pressed profile piece, which is pressed around the profile rod or pushed onto the latter, can also be used for the insulating layer 5.



   In the embodiment according to FIGS. 5 and 6, a so-called armored heating rod is used. In this case, where two working surfaces 1b, 1c of the square heating rod 1 remain uninsulated, the heating rod 1 is provided with a flag-like extension 11 so that it can be fixed in a holder 14. Two adjacent surfaces of the heating rods 12 and 13 and the extension 11 are surrounded by thermal insulation 5. The rod according to FIGS. 5 and 6 differs from the commercially available heating rods in its special cross-sectional shape and in that the electrical connections are anchored in the tube with solderable ceramic plugs or a directly fused plug 15 made of sintered glass.



   In the two variants described, heating rods of different designs are used as heat sources. Of course, heating rods of any kind can be used in both cases.

Claims (1)

PATENTANSPRUCH An einem Halter angeordnetes Heizelement zum Absiegeln von heissiegelfähigen Packungen, dadurch gekennzeichnet, dass zwischen Heizelement (1) und Halter (10 bzw. 14) eine thermische Isolierschicht (5) angeordnet ist, derart dass keine metallische Berührung zwischen Halter und Heizelement stattfindet. PATENT CLAIM Heating element arranged on a holder for sealing heat-sealable packs, characterized in that a thermal insulating layer (5) is arranged between the heating element (1) and the holder (10 or 14) so that there is no metallic contact between the holder and the heating element. UNTERANSPRÜCHE 1. Heizelement nach Patentanspruch, dadurch gekennzeichnet, dass das Heizelement (1) mit Ausnahme der Arbeitsfläche (la bzw. lb, lc) allseitig von der Isolierschicht (5) umschlossen ist. SUBCLAIMS 1. Heating element according to claim, characterized in that the heating element (1) with the exception of the work surface (la or lb, lc) is enclosed on all sides by the insulating layer (5). 2. Heizelement nach Unteranspruch 1, dadurch gekennzeichnet, dass das Heizelement (1) im Querschnitt mindestens annähernd trapezförmig ausgebildet ist, und dass es an drei Seiten von der Isolierschicht (5) und vom Halter (10) umschlossen und gehalten ist. 2. Heating element according to dependent claim 1, characterized in that the heating element (1) is at least approximately trapezoidal in cross section, and that it is enclosed and held on three sides by the insulating layer (5) and the holder (10). 3. Heizelement nach Patentanspruch, dadurch gekennzeichnet, dass es einen viereckigen Querschnitt aufweist, und dass es als Fortsetzung einer Seitenfläche eine fahnenartige Verlängerung (11) zur Befestigung im Halter (14) aufweist, wobei zwei Seitenflächen und die Verlängerung (11) von der Isolierschicht (5) und vom Halter (14) umschlossen sind. 3. Heating element according to claim, characterized in that it has a square cross-section, and that it has a flag-like extension (11) for fastening in the holder (14) as a continuation of a side surface, two side surfaces and the extension (11) from the insulating layer (5) and are enclosed by the holder (14). 4. Heizelement nach Patentanspruch, dadurch gekennzeichnet, dass die thermische Isolierschicht (5) aus einem einzigen Profilstück besteht. 4. Heating element according to claim, characterized in that the thermal insulating layer (5) consists of a single profile piece. 5. Heizelement nach Patentanspruch, dadurch gekennzeichnet, dass der Heizleiter (2) im Innern des Heizelementes (1) von verdichtetem, bei hohen Temperaturen beständigen Pulver (4) umgeben ist. 5. Heating element according to claim, characterized in that the heating conductor (2) in the interior of the heating element (1) is surrounded by compacted powder (4) which is stable at high temperatures. 6. Heizelement nach Patentanspruch und Unteranspruch 5, dadurch gekennzeichnet, dass der Heizleiter (2) im Innern des Heizelementes (1) von verdichtetem Berylliumoxyd-Pulver umgeben ist. 6. Heating element according to claim and dependent claim 5, characterized in that the heating conductor (2) in the interior of the heating element (1) is surrounded by compressed beryllium oxide powder.
CH1074662A 1962-09-11 1962-09-11 Heating element arranged on a holder for sealing packages CH398432A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH1074662A CH398432A (en) 1962-09-11 1962-09-11 Heating element arranged on a holder for sealing packages
GB32426/63A GB991090A (en) 1962-09-11 1963-08-16 Apparatus for the heat sealing of packages and other articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1074662A CH398432A (en) 1962-09-11 1962-09-11 Heating element arranged on a holder for sealing packages

Publications (1)

Publication Number Publication Date
CH398432A true CH398432A (en) 1966-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH1074662A CH398432A (en) 1962-09-11 1962-09-11 Heating element arranged on a holder for sealing packages

Country Status (2)

Country Link
CH (1) CH398432A (en)
GB (1) GB991090A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909891A (en) * 1986-11-06 1990-03-20 Somar Corporation Laminator
US4856259A (en) * 1988-10-17 1989-08-15 Baxter International Inc. Appratus for sealing and severing a web of film
ATE305849T1 (en) * 2001-04-06 2005-10-15 Tetra Laval Holdings & Finance PACKAGING MACHINE FOR PRODUCING SEALED PACKAGING FOR FLOWABLE FOODS
US20110167772A1 (en) * 2010-01-08 2011-07-14 Sealed Air Corporation (Us) Heat-seal device

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