WO1989011963A1 - Plastic profiled strip - Google Patents

Plastic profiled strip Download PDF

Info

Publication number
WO1989011963A1
WO1989011963A1 PCT/CH1989/000106 CH8900106W WO8911963A1 WO 1989011963 A1 WO1989011963 A1 WO 1989011963A1 CH 8900106 W CH8900106 W CH 8900106W WO 8911963 A1 WO8911963 A1 WO 8911963A1
Authority
WO
WIPO (PCT)
Prior art keywords
tape
plastic
metal
exposed
reinforcing sheet
Prior art date
Application number
PCT/CH1989/000106
Other languages
German (de)
French (fr)
Inventor
Keith James Shaw
Original Assignee
Ametex Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ametex Ag filed Critical Ametex Ag
Publication of WO1989011963A1 publication Critical patent/WO1989011963A1/en

Links

Classifications

    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • B29C53/785—Winding and joining, e.g. winding spirally helically using profiled sheets or strips with reinforcements

Definitions

  • the present invention relates to a plastic band for the production of pipes in the winding process by connecting the band edges along a helical seam.
  • the object of the present invention is now to design a plastic strip with regard to its use for forming a winding tube in such a way that even with small wall thicknesses there is sufficient strength and, in particular, rigidity and, in addition, gas tightness which is substantially improved compared to conventional plastic tubes can be achieved.
  • the reinforcing sheet with the exception of the edge parts on both sides lying in the band closure zone, is preferably embedded in the band base body made of plastic.
  • the reinforcing sheet should preferably protrude or be exposed laterally to such an extent that at least a part of the closure contact surfaces of the band lying in the band plane can be covered with it.
  • Another possibility is to place the reinforcement sheet directly on a belt surface, e.g. to be arranged on the underside of the plastic band intended to form the inner tube wall, e.g. by sticking.
  • the reinforcing metal sheet is preferably made of aluminum.
  • FIG. 1 shows a cross section through a plastic band designed according to the invention
  • Fig. 2 shows a variant of the band of Fig. 1
  • a plastic tape 1 with a reinforcing layer 2 in the form e.g. an aluminum sheet or strip is provided, the reinforcement layer 2a, 2b of metal being exposed on both sides of the band 1.
  • a left-hand band edge la comes to lie over a right-hand band edge 1b and forms a mechanical closure there (possibly additionally glued or welded) along the helical seam.
  • the exposed edges 2a, 2b of the reinforcing layer are welded at the locations A, A '(FIG. 1), C, C (FIG. 2), D, D f (FIG. 3) and E, E' (FIG. ).
  • the reinforcement layer 2 is not embedded in the plastic body 1, as in the previous embodiments, but is glued to a band surface.
  • the free areas 2a, 2b of the reinforcement layer 2 lie in the plane of the layer 2 itself. In this variant, welding is particularly easy to carry out.

Abstract

A plastic strip (1) has a metallic reinforcing layer (2) preferably embedded in its basic body. The lateral edge sections (2a, 2b) project freely from the basic body (1) in such a way that, when the tube is rolled, these sections (2a, 2b) overlap and can, if necessary, be welded or soldered together. The strip is used for the production of so-called roller laminated tubes which possess high strength and improved impermeability to gas.

Description

K u n s t s t o f f p r o f i l b a n d K u n s t s t o f f p r o f i l b a n d
Die vorliegende Erfindung betrifft ein Kunststoff¬ band zur Herstellung von Rohren im Wickelverfahren durch Verbinden der Bandränder entlang einer schraubenlinien- förmig verlaufenden Naht.The present invention relates to a plastic band for the production of pipes in the winding process by connecting the band edges along a helical seam.
Es ist bekannt, Kunststoffröhre im sogenannten Wickelverfahren herzustellen. Die Bandränder werden dabei entlang der schraubenlinienför ig verlaufenden Naht me¬ chanisch und/oder durch Verkleben, oder Verschweissen miteinander verbunden.It is known to produce plastic tubes in the so-called winding process. The band edges are connected mechanically and / or by gluing or welding along the helical seam.
Falls an die Festigkeit des so gebildeten Rohres besondere Anforderungen gestellt werden, könnte ein mit Verstärkungseinlagen versehenes Kunststoffband verwendet werden. Dabei bleibt allerdings immer noch der Nachteil, dass ein solcherart gebildetes Rohr nicht gasdicht ist (Gas kann durch die Rohrwand hindurchdiffundieren) und die Steiffigkeit nicht wesentlich verbessert wird.If special requirements are placed on the strength of the tube formed in this way, a plastic band provided with reinforcing inserts could be used. However, there still remains the disadvantage that a pipe formed in this way is not gas-tight (gas can diffuse through the pipe wall) and the rigidity is not significantly improved.
Aufgabe der vorliegenden Erfindung ist es nun, ein Kunststoffband im Hinblick auf seine Verwendung zur Bildung eines Wickelrohres so auszubilden, dass auch bei geringen Wandstärken eine genügende Festigkeit und ins¬ besondere Steiffigkeit gegeben ist und zudem eine gegen¬ über konventionellen Kunststoffrohren wesentlich verbes¬ serte Gasdichtheit erzielt werden kann.The object of the present invention is now to design a plastic strip with regard to its use for forming a winding tube in such a way that even with small wall thicknesses there is sufficient strength and, in particular, rigidity and, in addition, gas tightness which is substantially improved compared to conventional plastic tubes can be achieved.
Erfindungs emäss wird dies bei: einem Kunststoff¬ band der genannten Art dadurch erreicht, dass der Band¬ grundkörper mit einer Verstärkungsschicht aus einem Metall¬ blatt versehen ist, welches mindestens jeweils an den bei¬ den Bandlängsrändern frei liegt, sodass sich bei gewik- keltem Rohr die freiliegenden Metallblattrandpartien von aneinanderstossenden Bandrändern überlappen und gegebenen¬ falls miteinander verschweissbar oder verlötbar sind. Vorzugsweise ist das Verstärkungsblatt, mit Aus¬ nahme der in der Bandverschlusszone liegenden beidseiti- gen Randpartien, in den Bandgrundkörper aus Kunststoff eingebettet. Das Verstärkungsblatt soll vorzugsweise seitlich soweit vorstehen beziehungsweise freiliegen, dass wenigstens ein Teil der in der Bandebene liegenden Verschlussberührungsflächen des Bandes damit überdeckbar ist.According to the invention, this is achieved in the case of: a plastic tape of the type mentioned in that the tape base body is provided with a reinforcing layer made of a metal sheet, which is exposed at least in each case on the two longitudinal tape edges, so that when the tape is wound Pipe overlap the exposed metal sheet edge parts of abutting band edges and, if necessary, can be welded or soldered to one another. The reinforcing sheet, with the exception of the edge parts on both sides lying in the band closure zone, is preferably embedded in the band base body made of plastic. The reinforcing sheet should preferably protrude or be exposed laterally to such an extent that at least a part of the closure contact surfaces of the band lying in the band plane can be covered with it.
Eine andere Möglichkeit besteht darin, das Ver¬ stärkungsblatt direkt auf einer Bandoberfläche, z.B. auf der zur Bildung der Rohrinnenwand vorgesehenen Unterseite des Kunststoffbandes anzuordnen, z.B. durch Aufkleben.Another possibility is to place the reinforcement sheet directly on a belt surface, e.g. to be arranged on the underside of the plastic band intended to form the inner tube wall, e.g. by sticking.
Das Verstärkungsmetallblatt besteht vorzugsweise aus Aluminium.The reinforcing metal sheet is preferably made of aluminum.
Die Erfindung wird nachstehend anhand von in der Zeichnung dargestellten Ausführungsbeispielen noch etwas näher erläutert. Es zeigt:The invention is explained in more detail below with reference to exemplary embodiments shown in the drawing. It shows:
Fig. 1 einen Querschnitt durch ein erfindungs- gemäss ausgebildetes Kunststoffband,1 shows a cross section through a plastic band designed according to the invention,
Fig. 2 eine Variante des Bandes von Fig. 1, undFig. 2 shows a variant of the band of Fig. 1, and
Fig. 3 und 4weitere Ausführungsformen.3 and 4 further embodiments.
In der Zeichnung (Fig. 1-4) ist dargestellt, wie ein Kunststoffband 1 mit einer Verstärkungsschicht 2 in Form z.B. eines Aluminiumblattes oder Streifens versehen ist, wobei zu beiden Seiten des Bandes 1 die Verstärkungs¬ schicht 2a, 2b aus Metall frei liegt. Beim gewickelten Rohr kommt jeweils ein linksseitiger Bandrand la über einen rechtsseitigen Bandrand 1b zu liegen und bildet dort einen entlang der schraubenlinienförmig verlaufenden Naht einen mechanischen Verschluss (eventuell zusätzlich verklebt oder verschweisst) .In the drawing (Fig. 1-4) it is shown how a plastic tape 1 with a reinforcing layer 2 in the form e.g. an aluminum sheet or strip is provided, the reinforcement layer 2a, 2b of metal being exposed on both sides of the band 1. In the coiled tube, a left-hand band edge la comes to lie over a right-hand band edge 1b and forms a mechanical closure there (possibly additionally glued or welded) along the helical seam.
Damit erhält ein mittels des Bandes 1 gewickeltes Rohr eine höhere Festigkeit (oder die Wandstärke kann bei gleicher oder vergleichbarer Festigkeit geringer gewählt werden) . Hinzu kommt, dass ein gebildetes Rohr nunmehr weitgehend gasdicht ist.This gives a tube wound by means of the tape 1 a higher strength (or the wall thickness can be chosen to be lower with the same or comparable strength). In addition, a tube that is formed is now largely gas-tight.
Gegebenenfalls können die im montierten Zustand aufeinanderliegenden freien Randzonen 2a, 2b noch mit¬ einander verschweisst oder verlötet werden, um eine weit¬ gehend perfekte Gasdichtheit zu gewährleisten. Auch die Festigkeit wird in diesem Fall nochmals verbessert. Die Verschweissung kann z.B. mittels Ultraschallschweiεsung oder Elektroschweissung erfolgen. Durch vorgängiges Auf¬ bringen eines Lotstreifens kann die Verbindung auch durch Lötung erfolgen.If necessary, they can be assembled free edge zones 2a, 2b lying on top of one another are still welded or soldered to one another in order to ensure largely perfect gas tightness. The strength is also further improved in this case. The welding can be carried out, for example, by means of ultrasound welding or electric welding. By previously applying a solder strip, the connection can also be made by soldering.
Eine Verschweissung der freiliegenden Ränder 2a, 2b der Verstärkungsschicht erfolgt an den Stellen A,A' (Fig. 1), C,C (Fig. 2), D,Df (Fig. 3) beziehungsweise E,E' (Fig. ).The exposed edges 2a, 2b of the reinforcing layer are welded at the locations A, A '(FIG. 1), C, C (FIG. 2), D, D f (FIG. 3) and E, E' (FIG. ).
Bei der Variante nach Fig. 2 sind lediglich die seitlich freiliegenden Zonen der Verstärkungsschicht anders aus dem Grundkörper des Kunststoffbandes 1 heraus¬ geführt..In the variant according to FIG. 2, only the laterally exposed zones of the reinforcement layer are led out of the base body of the plastic strip 1 differently.
Bei der Variante nach Fig. 3 schliesslich ist die Verstärkungsschicht 2 nicht wie bei den vorangehenden Ausführungsformen- in den Kunststoffkörper 1 eingebettet, sondern auf einer Bandoberfläche aufgeklebt.Finally, in the variant according to FIG. 3, the reinforcement layer 2 is not embedded in the plastic body 1, as in the previous embodiments, but is glued to a band surface.
Bei der relativ einfach ausgestalteten Variante nach Fig. 4 liegen die freien Bereiche 2a, 2b der Ver¬ stärkungsschicht 2 in der Ebene der Schicht 2 selbst. Bei dieser Variante ist ein Verschweissen besonders einfach durchzuführen. 4, the free areas 2a, 2b of the reinforcement layer 2 lie in the plane of the layer 2 itself. In this variant, welding is particularly easy to carry out.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Kunststof band zur Herstellung von Rohren im Wickelverfahren durch Verbinden der Bandränder entlang einer schraubenlinienförmig verlaufenden Naht, dadurch gekennzeichnet, dass der Bandgrundkörper mit einer Ver¬ stärkungsschicht aus einem Metallblatt versehen ist, welches mindestens jeweils an den beiden Bandlängsrän¬ dern frei liegt, sodass sich bei gewickeltem Rohr die freiliegenden Metallblattrandpartien von aneinanderstos- senden Bandrändern überlappen und gegebenenfalls mit¬ einander verschweissbar oder verlötbar sind.1. Plastic tape for the production of pipes in the winding process by connecting the tape edges along a helical seam, characterized in that the tape base body is provided with a reinforcement layer made of a metal sheet, which is at least exposed on the two tape longitudinal edges so that When the tube is wound, the exposed metal sheet edge parts of adjacent strip edges overlap and can optionally be welded or soldered to one another.
2. Kunststoffband nach Anspruch 1, dadurch ge¬ kennzeichnet, dass das Verstärkungsblatt aus Metall mit Ausnahme der in der Bandverschlusszone liegenden beid- seitigen Randpartien in den Bandgrundkörper aus Kunst¬ stoff eingebettet ist.2. Plastic tape according to claim 1, characterized ge indicates that the reinforcing sheet made of metal is embedded in the tape base body made of plastic with the exception of the two-sided edge parts lying in the tape closure zone.
3. Kunststoffband nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Verstärkungsblatt aus Metall soweit seitlich vorsteht beziehungsweise freiliegt, dass wenigstens ein Teil der im wesentlichen in der Bandebene liegenden Verschlussberührungsflächen des Bandes damit überdeckbar sind.3. Plastic tape according to claim 1 or 2, characterized in that the reinforcing sheet of metal protrudes laterally or is exposed to the extent that at least a part of the sealing contact surfaces of the tape lying essentially in the tape plane can be covered with it.
4. Kunststoffband nach Anspruch 1, dadurch ge¬ kennzeichnet, dass das Verstärkungsblatt aus Metall auf der zur Bildung der Rohrinnenwand vorgesehenen Unterseite des Kunststoffbandes, beispielsweise durch Aufkleben angeordnet ist. 4. Plastic tape according to claim 1, characterized ge indicates that the reinforcing sheet made of metal is arranged on the underside of the plastic tape provided for forming the inner tube wall, for example by gluing.
5. Kunststoffband nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass das Verstärkungsblatt aus5. Plastic tape according to one of claims 1-4, characterized in that the reinforcing sheet
Aluminium oder Stahl besteht und eine Dicke von vorzugs¬ weise mindestens 0,2 mm aufweist. There is aluminum or steel and preferably has a thickness of at least 0.2 mm.
PCT/CH1989/000106 1988-06-02 1989-06-02 Plastic profiled strip WO1989011963A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2102/88-2 1988-06-02
CH210288 1988-06-02

Publications (1)

Publication Number Publication Date
WO1989011963A1 true WO1989011963A1 (en) 1989-12-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1989/000106 WO1989011963A1 (en) 1988-06-02 1989-06-02 Plastic profiled strip

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AU (1) AU3562189A (en)
WO (1) WO1989011963A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004202B2 (en) 2002-04-22 2006-02-28 Rib Loc Australia Pty Ltd. Composite strip windable to form a helical pipe and method therefor
DE112006001785B4 (en) * 2005-07-07 2012-03-29 Harbin Starway Machinery Manufacturing Co. Ltd. Method and apparatus for making a steel reinforced plastic drainage pipe and steel reinforced plastic drainage pipe
WO2015049485A1 (en) * 2013-10-01 2015-04-09 Ge Oil & Gas Uk Limited Helical winding

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE549100A (en) * 1955-06-29
DE105337C (en) *
GB718403A (en) * 1951-07-11 1954-11-10 Kopex Maschinen A G Improvements in flexible tubes
FR2107500A5 (en) * 1970-09-11 1972-05-05 Siegwart Emil
DE3308397A1 (en) * 1982-03-12 1983-09-22 Dutch Environment Corp. B.V., 7547 Enschede Plastically flexible pipe
WO1985003755A1 (en) * 1984-02-20 1985-08-29 Rib Loc Hong Kong Limited Method of and means for forming and sealing helically wound tubes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE105337C (en) *
GB718403A (en) * 1951-07-11 1954-11-10 Kopex Maschinen A G Improvements in flexible tubes
BE549100A (en) * 1955-06-29
FR2107500A5 (en) * 1970-09-11 1972-05-05 Siegwart Emil
DE3308397A1 (en) * 1982-03-12 1983-09-22 Dutch Environment Corp. B.V., 7547 Enschede Plastically flexible pipe
WO1985003755A1 (en) * 1984-02-20 1985-08-29 Rib Loc Hong Kong Limited Method of and means for forming and sealing helically wound tubes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004202B2 (en) 2002-04-22 2006-02-28 Rib Loc Australia Pty Ltd. Composite strip windable to form a helical pipe and method therefor
US7174922B2 (en) 2002-04-22 2007-02-13 Rib Loc Australia Pty Ltd. Composite strip windable to form a helical pipe and method therefor
DE112006001785B4 (en) * 2005-07-07 2012-03-29 Harbin Starway Machinery Manufacturing Co. Ltd. Method and apparatus for making a steel reinforced plastic drainage pipe and steel reinforced plastic drainage pipe
WO2015049485A1 (en) * 2013-10-01 2015-04-09 Ge Oil & Gas Uk Limited Helical winding

Also Published As

Publication number Publication date
AU3562189A (en) 1990-01-05

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