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DE2851612A1 - Plastics welding system - with electric current passing through conductive plastic wire with metal powder admixture - Google Patents

Plastics welding system - with electric current passing through conductive plastic wire with metal powder admixture

Info

Publication number
DE2851612A1
DE2851612A1 DE19782851612 DE2851612A DE2851612A1 DE 2851612 A1 DE2851612 A1 DE 2851612A1 DE 19782851612 DE19782851612 DE 19782851612 DE 2851612 A DE2851612 A DE 2851612A DE 2851612 A1 DE2851612 A1 DE 2851612A1
Authority
DE
Germany
Prior art keywords
electric current
welding
plastic
metal powder
plastic wire
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE19782851612
Other languages
German (de)
Inventor
Wilfried Boldt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19782851612 priority Critical patent/DE2851612A1/en
Publication of DE2851612A1 publication Critical patent/DE2851612A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3408—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3412—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5035—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being in thread form, i.e. in the form of a single filament, e.g. in the form of a single coated filament
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
    • B29C65/3496—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic with a coating, e.g. a metallic or a carbon coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3612—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Thermoplastic materials can be welded together by laying into the seam a plastic wire which has been made conductive by an admixture of metal chips or metal powder. The electric current flowing in it when a voltage is applied to its ends causes the plastic material to melt and to fuse together. d.c or a.c. of any frequency can be applied. the same effect can be achieved by metallising the surface of an intended weld so that a current can flow. When either of these systems is applied to dielectric welding, a cocn. of the electric field lines to the seam is attained. Systems saves energy by locally concentrated heating leads to faster welding rates and is easy to apply.

Description

A11wendun#sgebiet:A11 turnaround area:

Verschweißen von Kunststoffteilen in der Kunststoffverarbeitung Zweck: Vereinfachung des Kunststoffschweißens und Eröffnung neuer Konstruktionsmöglichteiten mit Kunststoffez Stand der Technik: Schweißbare Kunststoffe (Thermoplaste) werden verschweißt z B. mit Heißluft' dielektrischen Verlusten, Ultrasehall, Spiegelschweißen, Lösungsmitteln (Verkleben) Kritik des Standes: Das Heißluftschweißverfahren erfordert sehr viel Energie, geschickte Handhabung und bringt eine starke Erwärmung an einen Großteil der zu verschweißenden Teile in weiter Nahe der Schweißnaht mit sich.Welding of plastic parts in plastics processing Purpose: Simplification of plastic welding and opening of new construction possibilities with Kunststoffez State of the art: Weldable plastics (thermoplastics) become welded e.g. with hot air 'dielectric losses, ultrasound, mirror welding, Solvents (gluing) Criticism of the booth: The hot air welding process requires a lot of energy, skillful handling and brings a strong warming to you Most of the parts to be welded are in close proximity to the weld seam.

Beim Schweißen mit dielektrischen Verlusten läßt sich der Erwärmungsort nur ungenau bestimmen. Eine weiträumige Teileerwärmung ahnlich wie beim Heißluftschweißen tritt auf.When welding with dielectric losses, the heating location can only be determined imprecisely. Extensive heating of the parts, similar to hot air welding occurs.

Beim Zusammendrücken der zu verschweißenden Teile ist eine Verformung zu berücksichtigen.When the parts to be welded are pressed together, there is a deformation to consider.

Ultraschallschweißen ist nur bei dünnen Folien vorteilhaft und läßt sich hauptsächlich nur bei relativ-kleinen Schweißflächen anwenden.Ultrasonic welding is only advantageous for thin foils and can not be used are mainly only used for relatively small welding areas.

Aufgabe: Die Erfindung kann das Heißluftschweißverfahren an vielen Einsatzpunkten ablösen, sowie beim Schweißen mit dielektrischen Verlusten den Erwärmungs- und Verflüssigungsort genauer bestimmen und diesem Verfahren zu mehr Bedeutung verhelfen.Task: The invention can apply the hot air welding process to many Detach insert points, as well as the heating-up when welding with dielectric losses and determine the liquefaction location more precisely and make this method more important.

Die Erfindung bringt eine Energieeinsparung mit sich durch örtliche Erwärmung, höhere Arbeitsgeschwindigkeitound ermöglicht eine einfache Handhabung.The invention brings energy savings through local Warming, higher working speed and easy handling.

Lösung: Statt des einfachen KuststoffschweißdrShtes beim Heißluftschweißen wird ein Schweißdraht in die gesamte Schweißnaht gelegt, welcher durch Einbringen elektrisch leitender Werkstoffe, wie t.B. Metallspäne oder -pulver, elektrisch leitend geworden ist. Eine an den Schweißdraht angelegte elektrische Spannung erzeugt einen elektrischen Strom im leitend gemachten Kunststoff Bei genügender Stromstärke tritt Erwärmung des Kunststoffs ein.Solution: Instead of the simple plastic welding wire for hot air welding a welding wire is placed in the entire weld seam, which by introducing it electrically conductive materials, such as t.B. Metal chips or powder, electrically conductive has become. An electrical voltage applied to the welding wire creates a Electric current in plastic that has been made conductive If the current is sufficient, it occurs Heating the plastic.

Das örtliche Einbringen von Metallepänen in einen Kunststoffschweißdraht oder in die Schweißnaht bewirkt beim Dielektrischen Schweißen eine Konzentration der elektrischen Feldlinien auf die Lage der Metallspane und somit örtlich konzentrierte Verluste und damit gezielte Erwärmung.The local introduction of metal chips into a plastic welding wire or in the weld seam causes a concentration during dielectric welding of the electric field lines on the position of the metal chips and thus locally concentrated Losses and thus targeted heating.

Weitere Ausgestaltung der Erfindung: Beim Stromflußschweißen mit angelegter Spannung kann Gleieh-oder hoch- bsw. niedrigfrequente Wechselspannung angelegt werden. Hochfrequensspannung läßt eine Stromführung an der Oberfläche zu.Another embodiment of the invention: When current flow welding with applied Tension can be equal or high bsw. low-frequency alternating voltage are applied. High-frequency voltage allows current to be carried on the surface.

Auch durch Aufgalvanisieren von Metallen auf die Kunststoffoberfläche kann die elektrische Leitfähigkeit erreicht werden und das Kunststoffschweißen ermöglichen.Also by electroplating metals onto the plastic surface electrical conductivity can be achieved and plastic welding possible.

Eine örtliche Durchsetzung des Kunststoffes mit leitenden Werkstoffen bringt örtlich begren#ten Stromfluß mit sich und damit örtliche Erwärmung.A local penetration of the plastic with conductive materials brings with it a locally limited flow of current and thus local warming.

Diese für den Stromfluß beschriebene Wirkung der Einlagerungskonz-entrationen wirken sich bei Hetalleinlagerungen in gleicher Weise im elektrischen Feld-aus.This effect of the storage concentrations described for the current flow have the same effect in the case of metal deposits in the electric field.

Claims (1)

Patentansprüche: Oberbegriff: Kunststoffschweißeii und -verflüssigen mit Hilfe des elektrischen Stromes als direkter Stromfluß im Kunststoff und in Erzeugung eines örtlich konzentrierten elektrischen Feldes.Claims: Generic term: plastic welding and liquefying with the help of the electric current as a direct current flow in the plastic and in production a locally concentrated electric field. Kennzeichnender Teil: Gekennzeichnet durch in den Kunststoff eingebrachte oder aufgetragene elektrisch leitende werkstoffe zur Ermöglichung eines fließenden elektrischen Stromes und durch örtlich bestimmt eingebrachte Metallepäne zur örtlichen Konzentration der elektrischen Feldlinien zur Herbeiführung örtlich bestimmte dielektrischer Verluste und damit Erwärmung.Identifying part: Identified by incorporated into the plastic or applied electrically conductive materials to enable a flowing electric current and locally determined metal chips to the local Concentration of the electric field lines to bring about locally determined dielectric Losses and thus warming.
DE19782851612 1978-11-29 1978-11-29 Plastics welding system - with electric current passing through conductive plastic wire with metal powder admixture Withdrawn DE2851612A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782851612 DE2851612A1 (en) 1978-11-29 1978-11-29 Plastics welding system - with electric current passing through conductive plastic wire with metal powder admixture

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DE2851612A1 true DE2851612A1 (en) 1980-06-12

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274364A3 (en) * 1986-12-16 1988-08-03 Fiat Auto S.P.A. A method for joining structural members with the use of fixing means of synthetic thermoplastic resin, a method for their manufacture, and a method of use
FR2622144A1 (en) * 1987-10-27 1989-04-28 Gerland Etancheite Sa METHOD FOR SEALING SEALING CAPS, SEALING CAPS AND WELDING DEVICE FOR CARRYING OUT SAID METHOD
WO1994026503A1 (en) * 1993-05-13 1994-11-24 Akzo Novel N.V. Weldable drawn plastic strip and structures produced from such strip
EP0705682A1 (en) * 1994-10-07 1996-04-10 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Process for heat joining of polymeric substrates
WO2001076851A1 (en) * 2000-04-06 2001-10-18 Formteile Helmer Gmbh Welded joint between two polymeric components, in particular in the construction of pipelines and pipe fittings
DE102012201426A1 (en) 2012-02-01 2013-08-01 Leibniz-Institut Für Polymerforschung Dresden E.V. PROCESS FOR JOINING PLASTICS AND METHOD FOR RELEASING A CONNECTION IN THE PLASTIC COMPOSITE AND PLASTIC COMPOSITE

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274364A3 (en) * 1986-12-16 1988-08-03 Fiat Auto S.P.A. A method for joining structural members with the use of fixing means of synthetic thermoplastic resin, a method for their manufacture, and a method of use
FR2622144A1 (en) * 1987-10-27 1989-04-28 Gerland Etancheite Sa METHOD FOR SEALING SEALING CAPS, SEALING CAPS AND WELDING DEVICE FOR CARRYING OUT SAID METHOD
EP0314548A3 (en) * 1987-10-27 1991-10-16 Axter Impervious covering, processes for the joining or fixing thereof and apparatus employing such processes
WO1994026503A1 (en) * 1993-05-13 1994-11-24 Akzo Novel N.V. Weldable drawn plastic strip and structures produced from such strip
EP0705682A1 (en) * 1994-10-07 1996-04-10 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Process for heat joining of polymeric substrates
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WO2013113676A2 (en) 2012-02-01 2013-08-08 Leibniz-Institut Für Polymerforschung Dresden E.V. Method for bonding plastics and method for releasing a bond in the plastic composite and a plastic composite
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