AT304061B - Welding device for producing a band-shaped welded connection between at least two foils made of thermoplastic material - Google Patents

Welding device for producing a band-shaped welded connection between at least two foils made of thermoplastic material

Info

Publication number
AT304061B
AT304061B AT988666A AT988666A AT304061B AT 304061 B AT304061 B AT 304061B AT 988666 A AT988666 A AT 988666A AT 988666 A AT988666 A AT 988666A AT 304061 B AT304061 B AT 304061B
Authority
AT
Austria
Prior art keywords
band
producing
thermoplastic material
welding device
welded connection
Prior art date
Application number
AT988666A
Other languages
German (de)
Original Assignee
Electronic Ges Fuer Hochfreque
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 Electronic Ges Fuer Hochfreque filed Critical Electronic Ges Fuer Hochfreque
Priority to AT988666A priority Critical patent/AT304061B/en
Application granted granted Critical
Publication of AT304061B publication Critical patent/AT304061B/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224Heated 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof
    • B65B51/14Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/38Impulse heating

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 verhindern, sind bekannte die Bänder mechanisch spannende Einrichtungen (nicht gezeigt) vorgesehen. Die Heizbänder können auch Profilierungen aufweisen. Bei der Ausführungsform gemäss Fig. 2 ist eine extrem dünne Ausführung der   Flachheizkörper--12   und 13--wichtig, da ja hier eine Stufe im Ausmass der Summe beider Heizkörperstärken entstehen kann. 



   Ein weiteres Ausführungsbeispiel ist in Fig. 3 gezeigt, hier sind, wie bei der Ausführungsform gemäss Fig. 2 zwei aufeinanderliegende Flachheizkörper an einem Balken vorgesehen, wogegen die Gegenelektrode als winkelig profilierte   Trennelektrode--16--ausgeführt   ist, welche stärker geheizt ist, als die beiden Flachheizkörper   - -12, 13--.    



   PATENTANSPRÜCHE : 
1. Schweissvorrichtung zur Herstellung einer bandförmigen Schweissverbindung zwischen wenigstens zwei Folien aus thermoplastischem Kunststoff, deren Schweissbalken vorzugsweise impulsartig mittels Bandheizkörper erhitzbar sind, wobei die Bandheizkörper innerhalb der Schweisszone verschieden hoch erhitzbar sind, 
 EMI2.1 
 und einer Dicke von höchstens   0, 3 mm über-oder   unmittelbar nebeneinander angeordnet sind, wobei der schmälere Bandheizkörper auf eine höhere Temperatur erhitzbar ist, so dass eine Verschweissungsnaht mit über ihre Breite steigendem Verschweissungsgrad erzielbar ist. 
 EMI2.2 




   <Desc / Clms Page number 1>
 
 EMI1.1
 

 <Desc / Clms Page number 2>

 prevent, known devices (not shown) that mechanically tension the belts are provided. The heating strips can also have profiles. In the embodiment according to FIG. 2, an extremely thin design of the flat radiators - 12 and 13 - is important, since here a step in the amount of the sum of the two radiator thicknesses can arise.



   A further embodiment is shown in FIG. 3, here, as in the embodiment according to FIG. 2, two flat heating elements lying one on top of the other are provided on a bar, whereas the counter electrode is designed as an angularly profiled separating electrode - 16 - which is more heated than the two flat radiators - -12, 13--.



   PATENT CLAIMS:
1. Welding device for producing a band-shaped weld connection between at least two foils made of thermoplastic material, the welding bars of which can preferably be heated in a pulse-like manner by means of band heating elements, the band heating elements being able to be heated to different levels within the welding zone,
 EMI2.1
 and a thickness of at most 0.3 mm are arranged above or directly next to one another, the narrower band heater being heatable to a higher temperature, so that a weld seam with a welding degree that increases over its width can be achieved.
 EMI2.2


 

Claims (1)

in an sich bekannter Weise, aufeinanderliegend an einem der beiden Schweissbalken, vorzugsweise symmetrisch zueinander angeordnet sind. are arranged in a manner known per se, lying one on top of the other on one of the two welding bars, preferably symmetrically to one another.
AT988666A 1966-10-24 1966-10-24 Welding device for producing a band-shaped welded connection between at least two foils made of thermoplastic material AT304061B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT988666A AT304061B (en) 1966-10-24 1966-10-24 Welding device for producing a band-shaped welded connection between at least two foils made of thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT988666A AT304061B (en) 1966-10-24 1966-10-24 Welding device for producing a band-shaped welded connection between at least two foils made of thermoplastic material

Publications (1)

Publication Number Publication Date
AT304061B true AT304061B (en) 1972-12-27

Family

ID=3618180

Family Applications (1)

Application Number Title Priority Date Filing Date
AT988666A AT304061B (en) 1966-10-24 1966-10-24 Welding device for producing a band-shaped welded connection between at least two foils made of thermoplastic material

Country Status (1)

Country Link
AT (1) AT304061B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672566A1 (en) * 1991-02-11 1992-08-14 Raffault Gerard Bag support device equipped with a device for closing the bags by means of self-regulated heat sealing (welding)
WO2004041643A2 (en) * 2002-11-06 2004-05-21 Cfs Germany Gmbh Resistance heating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672566A1 (en) * 1991-02-11 1992-08-14 Raffault Gerard Bag support device equipped with a device for closing the bags by means of self-regulated heat sealing (welding)
WO2004041643A2 (en) * 2002-11-06 2004-05-21 Cfs Germany Gmbh Resistance heating
WO2004041643A3 (en) * 2002-11-06 2004-07-08 Cfs Germany Gmbh Resistance heating

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee