DE2340920A1 - PROCESS FOR MANUFACTURING WELDED PARTS FROM CROSS-LINKED PLASTIC MATERIAL - Google Patents

PROCESS FOR MANUFACTURING WELDED PARTS FROM CROSS-LINKED PLASTIC MATERIAL

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Publication number
DE2340920A1
DE2340920A1 DE19732340920 DE2340920A DE2340920A1 DE 2340920 A1 DE2340920 A1 DE 2340920A1 DE 19732340920 DE19732340920 DE 19732340920 DE 2340920 A DE2340920 A DE 2340920A DE 2340920 A1 DE2340920 A1 DE 2340920A1
Authority
DE
Germany
Prior art keywords
plastic material
cross
parts
crosslinkable
welded parts
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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.)
Pending
Application number
DE19732340920
Other languages
German (de)
Inventor
Andre Henri Jean Ansart
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.)
Pont a Mousson SA
Original Assignee
Pont a Mousson SA
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Filing date
Publication date
Application filed by Pont a Mousson SA filed Critical Pont a Mousson SA
Publication of DE2340920A1 publication Critical patent/DE2340920A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C65/5057—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 positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7375—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 state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73751—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 state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • B29C66/73752—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 state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized the to-be-joined areas of both parts to be joined being uncured
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • 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
    • 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
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4835—Heat curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0063—Density

Description

Dipl.-ii!'., vDipl.-ii! '., V

SOOO München Eiseriödicr SiriiySOOO Munich Eiseriödicr Siriiy

MO 4308MO 4308

PONT-A-MOÜSSON S.A.PONT-A-MOÜSSON S.A.

Verfahren zur Herstellung von geschweißten. Teilen aus vernetztem KunststoffmaterialMethod of manufacturing welded. Parts made from cross-linked plastic material

Die Erfindung betrifft ein Verfahren zur Herstellung von geschweißten Teilen aus vernetztem Kunststoffmaterial.The invention relates to a method for producing welded parts from crosslinked plastic material.

Teile aus verschweißtem Kunststoffmaterial sind wegen ihrer Vorteile, die sie aufweisen, insbesondere aus selbst bei hohen Temperaturen fließfestem Material bekannt.Parts made of welded plastic material are especially made by themselves because of the advantages they exhibit known flow-resistant material at high temperatures.

Eine relativ störende Schwierigkeit behindert jedoch ihre Herstellung, nämlich die Verbindung vernetzter Teile durch Schweißen.However, a relatively annoying difficulty hinders their production, namely the connection of networked ones Parts by welding.

Es wurde vorgeschlagen, zwischen den zu verbindenen, bereits vernetzten Teilen einen Film aus dem gleichen Basiskunststoffmaterial anzuordnen, der gegebenenfalls zusammen mit den Stoffen extrudiert wird, die notwendig sind um ihn vernetzbar zu machen, der jedoch im MomentIt has been suggested that a film made of the same basic plastic material should be used between the already crosslinked parts to be connected to be arranged, which is optionally extruded together with the substances that are necessary are to make it networkable, but that for the moment

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des Schweißens noch nicht vernetzt wird. Ein derartiges Verfahren ist z.B. in den FR-PS 1 153 915, 1 365 656 und 2 050 003 beschrieben. Der Vorteil dieses Verfahrens ist unzweifelhaft, jedoch verbleibt, daß, wenn auch der Scherwiderstand dieser Gefüge bzw. Verbindungen in zahlreichen Fällen ausreichend ist, ihr schlechtes Verhalten bei einer Reißbeanspruchung sie für bestimmte Anwendungsfälle ungeeignet macht. welding is not yet networked. Such a method is for example in FR-PS 1 153 915, 1 365 656 and 2 050 003. The advantage of this method is undoubted, but it remains that, even if the Shear resistance of these structures or connections is sufficient in numerous cases, their poor behavior when exposed to tear, makes them unsuitable for certain applications.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zu schaffen, das die Herstellung von geschweißten Teilen aus vernetztem Kunststoffmaterial ermöglicht, die zugleich eine gute Scher- und Reißfestigkeit haben.The invention is therefore based on the object of creating a method that allows the production of welded Parts made of cross-linked plastic material enables the have good shear and tear strength at the same time.

Gelöst wird diese Aufgabe dadurch, daß zunächst aus vernetzbarem und Vernetzungsmittel enthaltendem, jedoch noch nicht vernetztem Kunststoffmaterial bei einer Temperatur, die niedriger ist als diejenige, die zur Vernetzung notwendig ist, Halbfabrikate hergestellt werden, daß sie dann durch Schweißen verbunden werden, und daß schließlich das Gesamtgefüge vernetzt wird.This object is achieved by initially consisting of crosslinkable and crosslinking agents containing, but still non-crosslinked plastic material at a temperature lower than that necessary for crosslinking is, that semi-finished products are made, that they are then connected by welding, and that finally the overall structure is networked.

Die Erfindung wird nachstehend, anhand der Figuren 1 bis 4 beispielsweise erläutert. Es zeigt:The invention is explained below with reference to FIGS. 1 to 4, for example. It shows:

Figur 1 einen Querschnitt einer erfindungsgemäßen Schweißverbindung zwischen Teilen aus vernetztem Kunststoffmaterial für einen Scherversuch ,Figure 1 shows a cross section of a welded connection according to the invention between parts made of crosslinked Plastic material for a shear test,

Figur 2 einen Querschnitt einer Schweißverbindung der gleichen Art zwischen zwei Teilen für einen Reißversuch, undFigure 2 shows a cross-section of a welded joint of the same type between two parts for a tear test, and

Figur 3 und 4 Fig. 1 bzw. 2 entsprechende Darstellungen bekannter Verbindungen.FIGS. 3 and 4 representations of known connections corresponding to FIGS. 1 and 2, respectively.

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Man verwendet Polyäthylen hoher Dichte wie eines derjenigen, die im Handel unter der Bezeichnung "Lupolene 5261Z oder 4261A" der Badischen Anilin und Soda-Fabrik und "Manolene EF 2120 oder EF 2121 oder 56020" der Firma SODEFINE bekannten, mit einem Zusatz im Verhältnis von 1:5% von organischen Peroxiden wie z.B. das Peroxid von Ditert-butyl, das Peroxid von Dicumyl und das Diperoxid 1,3-Ditertbutyl-peroxidiisopropylbenzol.High density polyethylene such as one of those commercially available under the name "Lupolene" is used 5261Z or 4261A "from the Badische Anilin und Soda-Fabrik and" Manolene EF 2120 or EF 2121 or 56020 "from the company SODEFINE known, with an addition in the ratio of 1: 5% of organic peroxides such as peroxide of di-tert-butyl, the peroxide of dicumyl and the diperoxide 1,3-di-tert-butyl-peroxidiisopropylbenzene.

Das verwendete Material kann auch ein Polyäthylen niedriger Dichte oder ein Polypropylen mit einem Zusatz eines Vernetzungsmittels sein. Allgemein kann es jedes vernetzbare Kunststoffmaterial mit einem Zusatz eines Vernetzungsmittels und gegebenenfalls mit Glasfasern oder irgendeinem anderen Material als Füllstoff sein.The material used can also be a low density polyethylene or a polypropylene with an addition of a crosslinking agent be. In general, it can be any crosslinkable plastic material with an addition of a crosslinking agent and optionally with fiberglass or some other material as filler.

Dieses Gemisch wird bei einer Temperatur zwischen 140 und 18O°C in Form von zu verbindend« trudiert, die Halbfabrikate bilden.This mixture is at a temperature between 140 and 180 ° C in the form of "to be connected" trudes that form semi-finished products.

und 18O°C in Form von zu verbindenden Einzelteilen ex-and 18O ° C in the form of individual parts to be connected ex-

Diese Teile haben in den Verbindungsbereichen einen ebenen Rand, wie dies bei den Teilen 1 und 2 der Fig. 1 der Fall ist, oder einen umgebogenen Rand 3 wie im Falle der Teile la und 2a der Fig. 2.These parts have a flat edge in the connection areas, as is the case with parts 1 and 2 of FIG is, or a bent edge 3 as in the case of parts la and 2a of FIG. 2.

Diese Teile werden nun im ersten Fall an ihren ebenen, sich überlappenden Rändern bzw. im zweiten Fall an ihren aneinanderliegenden umgebogenen Rändern nach einem bekannten Verfahren verschweißt, wie dadurch, daß sie an einer Heißluftrampe vorbeigeführt und dann zwischen Walzen gepreßt werden, daß sie zwischen Heizgleitschuhen (mit geringem Reibungskoeffizienten, wenn es sich um eine kontinuierliche Schweißung handelt) durchgeführt und dann zwischen Walzen gepreßt werden, daß sie mittels Heizklemmbacken gleichzeitig erhitzt und gepreßt werden, oder daß sie mit Ultraschall beschallt und dann zwischen Walzen gepreßt werden, um jede Unterbrechung der Schweißung zu vermeiden.These parts are now in the first case on their flat, overlapping edges and in the second case on their adjacent bent edges are welded by a known method, such as by attaching them to a hot air ramp and then pressed between rollers that they are between Heizgleitschuhe (with a low coefficient of friction if it is a continuous weld) and then pressed between rollers so that they are heated and pressed simultaneously by means of heated clamping jaws, or that they are sonicated with ultrasound and then pressed between rollers to avoid any interruption of the Avoid welding.

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Diese Schweißverfahren bringen im allgemeinen das Material auf eine Temperatur zwischen 180 und 20O0C.These welding processes generally bring the material to a temperature between 180 and 20O 0 C.

Die erhaltenen Gefüge sind nun für die Vernetzung bereit.Diese wird an jedem Gefüge insgesamt durchgeführt und erfordert die Verwendung einer Heizeinrichtung, die das Gesamtgefüge auf eine Temperatur nahe oder über 200°C bringt.The structures obtained are now ready for networking is carried out on each structure as a whole and requires the use of a heating device that controls the overall structure brings to a temperature close to or above 200 ° C.

Es ist offensichtlich, daß die hier erwähnten Temperaturen sich auf die Anwendung des Polyäthylens hoher Dichte beziehen und für andere Materialien verschieden sind.It is evident that the temperatures mentioned here apply to the application of the higher polyethylene Refer to density and are different for other materials.

Die Fig. 3 und 4 zeigen entsprechende Gefüge, jedoch für Teile 4 und 5 mit ebenen Rändern (Fig. 3) oder Teile 4a und-5a mit umgebogenen Rändern (Fig. 4), die in bekannter Weise mittels eines Films 6 oder 6a verbunden sind, der zwischen die bereits vernetzten Teile eingebracht wird.3 and 4 show corresponding structures, but for parts 4 and 5 with flat edges (FIG. 3) or parts 4a and 5a with bent edges (Fig. 4), which are connected in a known manner by means of a film 6 or 6a that is inserted between the already networked parts.

Die durch die Erfindung erreichte Verbesserung wird anhand der in der folgenden Vergleichstabelle angegebenen Ergebnisse erläutert. Hierfür wurde an den Gefügen 1-2 (Fig. 1) und 4-5-6 (Fig. 3) Scherversuche bzw. an den Gefügeri la-2a (Fig. 2) und 4a-5a-6a (Fig. 4) Reißversuche durchgeführt.The improvement achieved by the invention is indicated in the following comparative table Results explained. For this purpose, shear tests were carried out on the structures 1-2 (Fig. 1) and 4-5-6 (Fig. 3) or on the Gefügeri la-2a (Fig. 2) and 4a-5a-6a (Fig. 4) tear tests carried out.

Versuchattempt Stand der
TechnikState of
technology Erfindunginvention Scherwiderstand in daN/cm
der geschweißten Oberfläche
(Fig. 1 und 3)
Reißwiderstand in daN/cm der
Schweißlänge in Richtung
senkrecht zum Schnitt
(Fig. 2 und 4)Shear resistance in daN / cm
the welded surface
(Fig. 1 and 3)
Tear resistance in daN / cm of
Welding length in direction
perpendicular to the cut
(Fig. 2 and 4) 1O-5O
3,51O-5O
3.5 mehr
als
100
13more
as
100
13th

409811/0848409811/0848

Claims (5)

PatentansprücheClaims 1. Verfahren zur Herstellung von geschweißten Teilen aus vernetzten^ Kunststoff material, dadurch gekennzeichnet, daß zunächst aus vernetzbarem und Vernetzungsmittel enthaltendem, jedoch noch nicht vernetztem Kunststoffmaterial bei einer Temperatur, die niedriger ist als diejenige, die zur Vernetzung notwendig ist, Halbfabrikate hergestellt werden, daß sie dann durch Schweißen verbunden werden, und daß schließlich das Gesamtgefüge vernetzt wird.1. A method for the production of welded parts from cross-linked ^ plastic material, characterized in that that initially from crosslinkable and crosslinking agent containing, but not yet crosslinked plastic material semi-finished products at a temperature lower than that necessary for crosslinking that they are then connected by welding, and that finally that The overall structure is networked. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial ein thermoplastisches Material ist.2. The method according to claim 1, characterized in that the crosslinkable plastic material is a thermoplastic Material is. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial ein Polyolefin ist.3. The method according to claim 1 and 2, characterized in that the crosslinkable plastic material is a polyolefin is. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial ein Polyäthylen hoher Dichte ist.4. The method according to any one of claims 1 to 3, characterized in that the crosslinkable plastic material is a high density polyethylene. 5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial eine Füllstoff enthält..5. The method according to any one of claims 1 to 4, characterized in that the crosslinkable plastic material contains a filler .. 40981 1/084840981 1/0848 LeerseiteBlank page
DE19732340920 1972-08-25 1973-08-13 PROCESS FOR MANUFACTURING WELDED PARTS FROM CROSS-LINKED PLASTIC MATERIAL Pending DE2340920A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0020007A1 (en) * 1979-05-11 1980-12-10 Radiation Dynamics Inc. Method of bonding sheet materials to form wraps
FR2504846A1 (en) * 1981-02-06 1982-11-05 Grace W R Ltd METHOD FOR SEALING AND OPENING PACKAGING IN THERMOPLASTIC FILM AND PACKAGES HAVING EASILY REMOVABLE JOINTS

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1194773A (en) * 1982-03-12 1985-10-08 John R. Dunn Bonding elastomers
GB8620071D0 (en) * 1986-08-18 1986-10-01 British Gas Corp Structures of polymeric plastics material
GB2214863B (en) * 1988-02-19 1991-09-04 British Gas Plc Joining polyolefinic members by fusion
US5173142A (en) * 1991-07-19 1992-12-22 Wellman Machinery Of Michigan, Inc. Method of making reinforced structural composite assemblies

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FR1527798A (en) * 1966-02-04 1968-06-07 Semperit Ag Process for obtaining a firm bond between two or more layers of mixtures of different compositions of natural or synthetic rubber polymers
NL6809254A (en) * 1968-06-29 1969-12-31

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0020007A1 (en) * 1979-05-11 1980-12-10 Radiation Dynamics Inc. Method of bonding sheet materials to form wraps
FR2504846A1 (en) * 1981-02-06 1982-11-05 Grace W R Ltd METHOD FOR SEALING AND OPENING PACKAGING IN THERMOPLASTIC FILM AND PACKAGES HAVING EASILY REMOVABLE JOINTS

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CH576325A5 (en) 1976-06-15
AT337445B (en) 1977-06-27
FR2196888B1 (en) 1975-01-03
ES417251A1 (en) 1976-02-16
IT991924B (en) 1975-08-30
ATA731173A (en) 1976-10-15
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FR2196888A1 (en) 1974-03-22
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