DE2026193A1 - Process for firmly joining shaped bodies made of crosslinked polyols - Google Patents

Process for firmly joining shaped bodies made of crosslinked polyols

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Publication number
DE2026193A1
DE2026193A1 DE19702026193 DE2026193A DE2026193A1 DE 2026193 A1 DE2026193 A1 DE 2026193A1 DE 19702026193 DE19702026193 DE 19702026193 DE 2026193 A DE2026193 A DE 2026193A DE 2026193 A1 DE2026193 A1 DE 2026193A1
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Germany
Prior art keywords
polyolefin
film
shaped bodies
crosslinked
polyethylene
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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
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DE19702026193
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German (de)
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Publication of DE2026193A1 publication Critical patent/DE2026193A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • C08J5/124—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives using adhesives based on a macromolecular component
    • C08J5/128—Adhesives without diluent
    • 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
    • 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
    • B29C65/10—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
    • B29C65/106—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 using 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
    • B29C65/48—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
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • 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
    • 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
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

PATEN TAN AVALTEPATEN TAN AVALTE

dring. H. NEGENDANK · dipl-ing. H. HAUCK ■ difl.-p.hts. W. SCHMITZurgently. H. NEGENDANK · dipl-ing. H. HAUCK ■ difl.-p.hts. W. SCHMITZ

HAMBUHG-MÜNCHEN ZTTSTEIiLTJNGSANSCHRIFT: HAMBUHG 36 · NETJER WALL· 41 HAMBUHG-MUNICH ZTTSTEIiLTJNGS ADDRESS: HAMBUHG 36 NETJER WALL 41

TEL. 36 74 28 TTND 36 4115TEL. 36 74 28 TTND 36 4 115

TELEGH. NSOBSAFATENT HAMBURGTELEGH. NSOBSAFATENT HAMBURG MÜNCHEN 15 · MOZARTSTR. 23MUNICH 15 MOZARTSTR. 23

BORG-WARNEH CORP. TEL. 5 38 05 86BORG-WARNEH CORP. TEL. 5 38 05 86

200 South Michigan Avenue tsiegh. negbijapatent München200 South Michigan Avenue tsiegh. negbijapatent Munich

Chicago, 111. 60604-/03AChicago, 111. 60604- / 03A

Hamburg, den 27. Mai 1970Hamburg, May 27, 1970

Verfahren zum festen Verbinden von geformtenMethod of firmly joining shaped

Körpern aus vernetzten! Polyolefin " Bodies from networked! Polyolefin "

Die Erfindung betrifft allgemein die Herstellung von Gegenständen aus vernetzten Polyolefinen und insbesondere ein neues Verfahren zum Verbinden von Gegenständen, wie z. B. Rohrlängen und Rohrverbindungsetücken, aus vernetztem Polyäthylen·The invention relates generally to the manufacture of Objects made from crosslinked polyolefins and in particular a new method of joining objects, such as B. pipe lengths and pipe connecting pieces, made of cross-linked polyethylene

Mit dem hier benutzten Ausdruck "vernetztes Polyolefin" (bzw. "vernetztes Polyäthylen") ist ein Material gemeint, wie es z. B. in der USA-Patentschrift 2 906 679 (Vernetzung durch Bestrahlung) oder der USA-Patentschrift 2 826 570 (Vernetzung mittels freie Radikale bildender Katalysatoren) beschrieben istThe term "crosslinked polyolefin" (or "crosslinked polyethylene") as used here means a material how it z. In U.S. Patent 2,906,679 (crosslinking by irradiation) or U.S. Patent 2,826,570 (crosslinking by means of catalysts which form free radicals) is described

I ·I ·

Die Entwicklung auf dem Gebiet vernetzt«: Polyäthylene und anderer Polyolefine ist bei gewiaeen Anwendungegebieten auf ganz erheblich· Hinderniss· gtetoßtn. Da zum Beispiel vernetzt·· Polyäthylen einig· sehr gut« Eoohttmptratur- The development in the field of cross-linked ": Polyethylenes and other polyolefins have encountered considerable obstacles in certain areas of application. Since, for example, crosslinked ·· polyethylene somewhat · very good «Eoohttmptratur-

eigenschaften hat, ζ. Β. Widerstandsfähigkeit gegenüber Hießen, ist es sehr schwierig, solche Materialien miteinander zu verbinden, es sei denn,durch rein mechanische Mittel, wie z. B. durch Schraubenverbindungen oder Anwendung üblicher mechanischer Befestigungsmittel.has properties, ζ. Β. Resistance to called, it is very difficult to combine such materials to connect, unless by purely mechanical means, such as z. B. by screw connections or application common mechanical fasteners.

Es sind' Versuche durchgeführt worden, um eine dichte Verbindung durch Überziehen der zu verbindenden Oberflächen mit freie Radikale bildenden Härtemitteln (siehe USA-Patentschrift 3 926 261) zu erzeugen. Eine andere Methode ist im USA-Patent 2 983 639 beschrieben, in welchem die Verwendung eines entflammbaren Lösungsmittels empfohlen wird, welches unmittelbar vor Bildung der Verbindung gezündet wird.There have been 'attempts have been made to establish a tight connection by coating the surfaces to be joined with hardening agents which form free radicals (see USA patent 3 926 261). Another approach is described in U.S. Patent 2,983,639, in which the use of a flammable solvent is recommended immediately prior to the formation of the joint is ignited.

Der Erfindung liegt die Aufgabe zugrunde, ein neues Verfahren zu schaffen, welches eine feste und gleichmäßige Verbindung von Gegenständen aus, vernetztem Polyolefin erzeugen läßt, ohne daß irgendwelche besonderen Fachkenntnisse zu seiner Durchführung erforderlich sind. Die Aufgabe wird gelöst durch ein Verfahren zum festen Verbinden von geformten Körpern aus vernetztem Polyolefin, welches dadurch gekennzeichnet ist, daß ein dünner Film eines im wesentlichen linearen Polyolefins zwischen die zu verbindenden Oberflächen eingefügt und die GrenzflächeThe invention is based on the object of creating a new method which can produce a firm and uniform connection of objects made of crosslinked polyolefin without any special specialist knowledge being required for its implementation. The object is achieved by a method for firmly joining shaped bodies made of crosslinked polyolefin, which is characterized in that a thin film of an essentially linear polyolefin is inserted between the surfaces to be joined and the interface

so stark erhitzt wird, daß der Film schmilzt, wobei einis heated so much that the film melts, whereby a

009882/1907 " 3 "009882/1907 " 3 "

■ - 3 -■ - 3 -

zur Bildung einer festen Verbindung ausreichender Druck ausgeübt wird*Sufficient pressure to form a solid bond is exercised *

Das erfindungsgemäße Verfahren hat gegenüber dem bisher bekannten wesentliche Vorteile. Es ist billig und erfordert nicht den Einsatz eines Spezialklebers. Mit sehr geringen Kenntnissen kann eine dichte gleichmäßige Verbindung ohne Schwierigkeiten hergestellt werden. IThe method according to the invention has significant advantages over the previously known. It's cheap and requires not the use of a special adhesive. With very little knowledge, a tight uniform connection can be made without Difficulties are made. I.

Die Erfindung wird durch die nachstehende genauere Beschreibung, die in Verbindung mit der beigefügten Figur durchgeführt wird, noch deutlicher werden.The invention will be clarified by the following more detailed description, taken in conjunction with the accompanying figure will become even clearer.

Die Figur zeigt ein" Querschnittsbild eines Rohrabschnittes, der nach dem erfindungsgemäßen Verfahren geklebt ist.The figure shows a "cross-sectional image of a pipe section, which is glued according to the method according to the invention.

Es ist darauf hinzuweisen, daß, obwohl das Verbinden von rohrförmigen Leitungen zwar das Hauptanwendungsgebiet der ' ' Erfindung ist, diese nicht hierauf beschränkt ist. Die Beschreibung, insoweit sie das Verbinden von Rohren oder der dazugehörigen Teile bringt, ist nur als typisches Beispiel gebracht.It should be noted that although the joining of tubular conduits is the main field of application of the '' Invention is not limited to this. The description, insofar as they are connecting pipes or which brings the associated parts is only given as a typical example.

Die Enden der Rohrabschnitte 10 und 11 werden zuerst nach irgendeiner gebräuchlichen Methode gereinigt, um Wachs, Fett oder Oberflächenschmutz zu entfernen, und dann mit einemThe ends of the pipe sections 10 and 11 are first after any conventional method to remove wax, grease, or surface grime, and then with a

009882/19 07 - 4 -009 882/19 07 - 4 -

dicken Film 12 aus im wesentlichen linearen oder nicht vernetztem polyolefinischem Material oder einem Film, welcher einen peroxydischen Katalysator enthält, der fähig ist, den Film bei Erhitzen über die Schmelztemperatur zu vernetzen, versehen. Nach einer bevorzugten Ausführungsform der Erfindung hat der Film eine Dicke zwischen etwa 0,0254 und etwa 0,254 mm. Dies hängt jedoch selbstverständlich von dem besonderen Verwendungszweck und der Toleranz in den Dimensionen der Leitung ab.thick film 12 of substantially linear or non-crosslinked polyolefinic material or a film, which contains a peroxide catalyst capable of causing the film to close when heated above the melting temperature network, provided. In a preferred embodiment of the invention, the film has a thickness between about 0.0254 and about 0.254 mm. Of course, this depends on the particular application and tolerance in the dimensions of the line.

Nachdem der Film 12 aufgebracht ist, wird der Verbindungskörper, die Muffe 14, aus vernetztem Polyolefin über den Außendurchmesser geschoben, so daß der Film fugensicher eingreift. In dem Verbindungskörper und dem Rohr kann eine leichte Konizität vorhanden sein, um ein dichtes Aufeinanderpassen zu bewirken. Wenn der Verbindungskörper H in seine Endstellung gebracht ist, wird die Verbindung über den Schmelzpunkt des Filmes erhitzt, mittels einer Flamme, eines Ofens oder durch dielektrische Beheizung usw·, um den Film zu schmelzen. Gleichzeitig wird ein ausreichender Druck ausgeübt, um die Bildung einer festen Verbindung zwischen den beiden Körpern aus vernetztem Polyolefin zu schaffen.After the film 12 is applied, the connecting body, the sleeve 14, is made of crosslinked polyolefin over the Outer diameter pushed so that the film engages securely. In the connecting body and the pipe, a slight taper must be present to ensure a tight fit to effect. When the connecting body H is brought into its end position, the connection is over heated to the melting point of the film, by means of a flame, a furnace or by dielectric heating, etc., to the Melt film. At the same time, sufficient pressure is applied to form a firm connection between the to create the two bodies made of cross-linked polyolefin.

Es ist eine Reihe von Versuchen unter Verwendung von Rohren aus vernetztem Polyäthylen und einem PiIm aus linearem Polyäthylen in der vorstehend beschriebenen Weise durchgeführt worden. Die Verklebungen wurden in einemIt is a series of experiments using pipes made of cross-linked polyethylene and a PiIm linear polyethylene has been carried out in the manner described above. The bonds were in one

009882/1907 " 5 "009882/1907 " 5 "

Standard-Instron-Prüfgerät mit einer Querkopfgeschwindigkeit von 5»08 cm/lin. geprüft. Im Durchschnitt widerstanden die Rohrverbindungen "bis zu etwa 2608 kg Zug (5750 lbs. of pull), während normale Rohrverbindungen "bei 44>45 kg Zug (9800 lbs.) versagten* In einigen Fällen versagte das Rohr vor den Verbindungsstellen.Standard Instron tester with a crosshead speed from 5 »08 cm / lin. checked. On average withstood the pipe connections "up to about 2608 kg (5750 lbs. of pull), while normal pipe connections "at 44> 45 kg pull (9800 lbs.) Failed * In some instances, the pipe failed before the joints.

-6 009882/1907 -6 009 882/1907

Claims (5)

- 6 Patentansprüche - 6 claims Verfahren zum festen Verbinden von geformten Körpern aus vernetzten! Polyolefin, dadurch gekennzeichnet, daß ein dünner PiIm eines im wesentlichen linearen Polyolefins zwischen die zu verbindenden Oberflächen eingefügt und die Grenzfläche so stark erhitzt wird, daß der Film
schmilzt, wobei ein zur Bildung einer festen Verbindung ausreichender Druck ausgeübt wird,,·Method for firmly connecting shaped bodies from crosslinked! Polyolefin, characterized in that a thin sheet of an essentially linear polyolefin is inserted between the surfaces to be joined and the interface is heated to such an extent that the film
melts, applying sufficient pressure to form a solid bond ,, · 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Körper aus vernetzten! Polyäthylen mit linearem Polyäthylen2. The method according to claim 1, characterized in that Body from networked! Polyethylene with linear polyethylene verklebt werden.be glued. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der PiIm von linearem Polyolefin in einer Dicke von 0,0254 und 0,254 mm aufgebracht wird.3. The method according to claim 1, characterized in that the PiIm of linear polyolefin in a thickness of 0.0254 and 0.254 mm is applied. 4β Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß eine rohrförmige leitung mit einem Verbindungsstück, das auf den Außendurchmesser der rohrförmigen Leitung paßt, verklebt wird.Method according to claim 1, characterized in that a tubular line is glued to a connecting piece which fits onto the outer diameter of the tubular line. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein Polyolefinfilm aufgebracht wird, der einen' Katalysator sum Vernetzen dee den film bildenden Materials bei 5. The method according to claim 1, characterized in that a polyolefin film is applied, the crosslinking a 'catalyst sum dee the film-forming material 009882/1907 - 7 - .009882/1907 - 7 -. 202619202619 — 7 — Temperaturen über dessen Schmelzpunkt enthält.- 7 - Contains temperatures above its melting point. 009882/1907009882/1907 LeerseiteBlank page ORSGiNAL INSPECTEDORSGiNAL INSPECTED
DE19702026193 1969-06-12 1970-05-29 Process for firmly joining shaped bodies made of crosslinked polyols Pending DE2026193A1 (en)

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DE (1) DE2026193A1 (en)
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444551A1 (en) * 1978-12-22 1980-07-18 Pont A Mousson Polyolefin film used for a melt adhesive joint - between a metal pipe socket and a rubber seal used esp. to protect and bond a seal of EPDM rubber
EP0329350A1 (en) * 1988-02-19 1989-08-23 British Gas plc Joining polyolefinic members by fusion
EP0329349A1 (en) * 1988-02-19 1989-08-23 British Gas plc Joining polyolefinic members by fusion
EP0333379A2 (en) * 1988-03-12 1989-09-20 Victaulic Plc Process for the jointing of polyolefin bodies
EP0350651A2 (en) * 1988-07-14 1990-01-17 REHAU AG + Co Process for bonding articles
WO1997006205A2 (en) * 1995-08-04 1997-02-20 Uponor B.V. Joining of polyolefin articles
CN110920080A (en) * 2019-12-06 2020-03-27 泛海海工(山东)智能装备有限公司 Butt welding method for rectangular flat plate of thermoplastic polymer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572100A (en) * 1977-06-10 1980-07-23 Hepworth Iron Co Ltd Plastics pipe couplings
DE19913836C2 (en) * 1999-03-26 2002-02-07 Gerodur Mpm Kunststoffverarbei Process for producing a pipe connection and pipe connection

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444551A1 (en) * 1978-12-22 1980-07-18 Pont A Mousson Polyolefin film used for a melt adhesive joint - between a metal pipe socket and a rubber seal used esp. to protect and bond a seal of EPDM rubber
US4963421A (en) * 1988-02-19 1990-10-16 British Gas Plc Joining polyolefinic members by fusion
EP0329350A1 (en) * 1988-02-19 1989-08-23 British Gas plc Joining polyolefinic members by fusion
EP0329349A1 (en) * 1988-02-19 1989-08-23 British Gas plc Joining polyolefinic members by fusion
US4987018A (en) * 1988-02-19 1991-01-22 British Gas Plc Joining polyolefinic members by fusion
EP0333379A2 (en) * 1988-03-12 1989-09-20 Victaulic Plc Process for the jointing of polyolefin bodies
EP0333379A3 (en) * 1988-03-12 1991-06-05 Victaulic Plc Process for the jointing of polyolefin bodies
EP0350651A2 (en) * 1988-07-14 1990-01-17 REHAU AG + Co Process for bonding articles
EP0350651A3 (en) * 1988-07-14 1991-04-24 REHAU AG + Co Process for bonding articles
WO1997006205A2 (en) * 1995-08-04 1997-02-20 Uponor B.V. Joining of polyolefin articles
WO1997006205A3 (en) * 1995-08-04 1997-03-20 Uponor Bv Joining of polyolefin articles
GB2304072B (en) * 1995-08-04 1999-08-11 Uponor Ltd Joining of polyolefin articles
CN110920080A (en) * 2019-12-06 2020-03-27 泛海海工(山东)智能装备有限公司 Butt welding method for rectangular flat plate of thermoplastic polymer

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FR2050003A5 (en) 1971-03-26
BE751560A (en) 1970-12-07
NL7008298A (en) 1970-12-15

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