DE2340920A1 - Verfahren zur herstellung von geschweissten teilen aus vernetztem kunststoffmaterial - Google Patents

Verfahren zur herstellung von geschweissten teilen aus vernetztem kunststoffmaterial

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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
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English (en)
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
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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/de
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Description

Dipl.-ii!'., v
SOOO München Eiseriödicr Siriiy
MO 4308
PONT-A-MOÜSSON S.A.
Verfahren zur Herstellung von geschweißten. Teilen aus vernetztem Kunststoffmaterial
Die Erfindung betrifft ein Verfahren zur Herstellung von geschweißten Teilen aus vernetztem Kunststoffmaterial.
Teile aus verschweißtem Kunststoffmaterial sind wegen ihrer Vorteile, die sie aufweisen, insbesondere aus selbst bei hohen Temperaturen fließfestem Material bekannt.
Eine relativ störende Schwierigkeit behindert jedoch ihre Herstellung, nämlich die Verbindung vernetzter Teile durch Schweißen.
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 Moment
409811/0848
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.
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.
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.
Die Erfindung wird nachstehend, anhand der Figuren 1 bis 4 beispielsweise erläutert. Es zeigt:
Figur 1 einen Querschnitt einer erfindungsgemäßen Schweißverbindung zwischen Teilen aus vernetztem Kunststoffmaterial für einen Scherversuch ,
Figur 2 einen Querschnitt einer Schweißverbindung der gleichen Art zwischen zwei Teilen für einen Reißversuch, und
Figur 3 und 4 Fig. 1 bzw. 2 entsprechende Darstellungen bekannter Verbindungen.
409811/0848
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.
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.
Dieses Gemisch wird bei einer Temperatur zwischen 140 und 18O°C in Form von zu verbindend« trudiert, die Halbfabrikate bilden.
und 18O°C in Form von zu verbindenden Einzelteilen 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.
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.
409811/0848
Diese Schweißverfahren bringen im allgemeinen das Material auf eine Temperatur zwischen 180 und 20O0C.
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.
Es ist offensichtlich, daß die hier erwähnten Temperaturen sich auf die Anwendung des Polyäthylens hoher Dichte beziehen und für andere Materialien verschieden sind.
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.
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.
Versuch Stand der
Technik		 Erfindung
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)		 1O-5O
3,5		 mehr
als
100
13
409811/0848

Claims (5)

Patentansprüche
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.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial ein thermoplastisches Material ist.
3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial ein Polyolefin ist.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial ein Polyäthylen hoher Dichte ist.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das vernetzbare Kunststoffmaterial eine Füllstoff enthält..
40981 1/0848
Leerseite
DE19732340920 1972-08-25 1973-08-13 Verfahren zur herstellung von geschweissten teilen aus vernetztem kunststoffmaterial Pending DE2340920A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7230341A FR2196888B1 (de) 1972-08-25 1972-08-25

Publications (1)

Publication Number Publication Date
DE2340920A1 true DE2340920A1 (de) 1974-03-14

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Country Status (11)

Country Link
JP (1) JPS4993482A (de)
AT (1) AT337445B (de)
BE (1) BE801811A (de)
CH (1) CH576325A5 (de)
DE (1) DE2340920A1 (de)
ES (1) ES417251A1 (de)
FI (1) FI58275C (de)
FR (1) FR2196888B1 (de)
GB (1) GB1376430A (de)
IT (1) IT991924B (de)
NL (1) NL7310403A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0020007A1 (de) * 1979-05-11 1980-12-10 Radiation Dynamics Inc. Verfahren zum Verbinden von Blattmaterial zur Herstellung von Umhüllungen
FR2504846A1 (fr) * 1981-02-06 1982-11-05 Grace W R Ltd Procede pour sceller et ouvrir des emballages en une pellicule thermoplastique et emballages ayant des joints pouvant etre facilement enleves

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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1527798A (fr) * 1966-02-04 1968-06-07 Semperit Ag Procédé en vue d'obtenir une liaison ferme entre deux ou plusieurs couches de mélanges de différentes compositions de polymères de caoutchouc naturel ou synthétique
NL6809254A (de) * 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 (de) * 1979-05-11 1980-12-10 Radiation Dynamics Inc. Verfahren zum Verbinden von Blattmaterial zur Herstellung von Umhüllungen
FR2504846A1 (fr) * 1981-02-06 1982-11-05 Grace W R Ltd Procede pour sceller et ouvrir des emballages en une pellicule thermoplastique et emballages ayant des joints pouvant etre facilement enleves

Also Published As

Publication number Publication date
ATA731173A (de) 1976-10-15
FR2196888A1 (de) 1974-03-22
BE801811A (fr) 1974-01-02
FI58275B (fi) 1980-09-30
NL7310403A (de) 1974-02-27
ES417251A1 (es) 1976-02-16
IT991924B (it) 1975-08-30
GB1376430A (en) 1974-12-04
CH576325A5 (de) 1976-06-15
JPS4993482A (de) 1974-09-05
FI58275C (fi) 1981-01-12
AT337445B (de) 1977-06-27
FR2196888B1 (de) 1975-01-03

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