EP0969151B1 - Ummanteltes Drainagerohr - Google Patents

Ummanteltes Drainagerohr Download PDF

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Publication number
EP0969151B1
EP0969151B1 EP98202189A EP98202189A EP0969151B1 EP 0969151 B1 EP0969151 B1 EP 0969151B1 EP 98202189 A EP98202189 A EP 98202189A EP 98202189 A EP98202189 A EP 98202189A EP 0969151 B1 EP0969151 B1 EP 0969151B1
Authority
EP
European Patent Office
Prior art keywords
drain pipe
sleeve
covered
fixed
process according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98202189A
Other languages
English (en)
French (fr)
Other versions
EP0969151A1 (de
Inventor
Albert Verdonck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE69825039T priority Critical patent/DE69825039T2/de
Priority to DK98202189T priority patent/DK0969151T3/da
Priority to EP98202189A priority patent/EP0969151B1/de
Priority to AT98202189T priority patent/ATE271161T1/de
Priority to ES98202189T priority patent/ES2226062T3/es
Publication of EP0969151A1 publication Critical patent/EP0969151A1/de
Application granted granted Critical
Publication of EP0969151B1 publication Critical patent/EP0969151B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B11/00—Drainage of soil, e.g. for agricultural purposes
    • E02B11/005—Drainage conduits

Definitions

  • This invention concerns a process for manufacturing a covered drain pipe comprising a drain pipe which is enveloped by a sleeve of a knitting of a filter material according to the preamble of the first claim.
  • Such a covered drain pipe may among others be used for draining the ground.
  • the drain pipe is mostly a ribbed hose, openings being provided between the ribs through which water may flow into or out of the drain pipe.
  • the drain pipe is enveloped by a filter to hold up these particles.
  • the filter is formed by a cylindrically shaped sleeve of an elastic knitting, stretched around the drain pipe.
  • the knitting is mostly manufactured previously, in large lengths of 300 m for example, subsequently applied around the drain pipe and attached to the ends of the drain pipe.
  • the covered drain pipe known from EP-A-0,029,713 however has the disadvantage that the filter may come loose from the drain pipe, as a consequence of which the drain pipe is no longer enveloped over its entire length by the sleeve, and the filtering action of the sleeve is at least partially lost.
  • a covered drain filter comprising a drain pipe, a sleeve of a knitting of a filter material being fixed to the drain pipe in longitudinal direction of the drain pipe.
  • the sleeve may be adhered to the drain pipe along the entire contact area between the drain pipe and the sleeve or at contact points between the sleeve and the pipe.
  • the sleeve is manufactured separately in advance, and wound on a bobbin.
  • the drain pipe is placed into a cylinder, the sleeve is unwound from the bobbin and applied around the cylinder. Subsequently, the drain pipe is removed from the cylinder, the sleeve being carried along by the drain pipe. This process is rather labour-intensive.
  • the sleeve is knitted around the drain pipe, whereby the drain pipe is used as a core.
  • the adhesive is applied onto the drain pipe simultaneously with the knitting, so that the sleeve can be fixed to the drain pipe as it is being knitted.
  • This process offers the advantage that the size of the sleeve can be adapted to the size of the drain pipe.
  • the manufacturing and fixing of the sleeve to the drain pipe may be carried out in one single production step. In this way, it is possible to keep the production costs of the covered drain pipe relatively low, notwithstanding the use of an adhesive which is often somewhat more expensive.
  • the sleeve By fixing the sleeve in longitudinal direction of the drain pipe to the drain pipe, the sleeve is fixed on the drain pipe, so that the sleeve is kept in place, even in case the ends of the sleeve come loose from the ends of the drain pipe.
  • Such a fixing of the sleeve to the drain pipe also allows the covered drain pipe to be cut at any desired length, even after the sleeve has been applied around the drain pipe, without thereby adversely influencing the filtering action of the sleeve.
  • the fixing of the sleeve to the drain pipe namely prevents the sleeve, upon the sectioning of the drain pipe, from shrinking and retracting in longitudinal direction of the drain pipe. Because the knitting of the sleeve is stretched around the drain pipe, upon the sectioning of the covered drain pipe, the knitting will namely shrink and retract in longitudinal direction of the drain pipe, in order to re-adopt its original non-stretched shape.
  • a fixing of the sleeve to the drain pipe offers a particular advantage for covered drain pipes which are provided to be applied with their longitudinal axis vertically into the ground.
  • the fixing of the sleeve in longitudinal direction of the drain pipe prevents the sleeve from retracting in longitudinal direction of the drain pipe upon moving the covered drain pipe in the ground.
  • a strip shaped filter which can be laid down into a trench upon a drain pipe.
  • the filter material comprises fibrous peat material which is pressed into a sheet and applied onto a layer of kraft paper.
  • a covered drain pipe is known, the sleeve of which is formed by strips of a sintered polymer material, which are spirally wound around the drain pipe.
  • the strips are fixed to each other or to the drain pipe to prevent them from shifting with respect to each other, which would result in the loss of their filtering action.
  • an adhesive is used, selected such that it shows a good affinity to both the material of the drain pipe and the material of the sleeve.
  • the adhesive may for example be a glue, which is applied in the cold state, or a hot melt glue.
  • the adhesive may also be manufactured from the same material as the drain pipe and/or the sleeve. In that case, the adhesive is preferably applied in the hot, liquid or molten state, so that the adhesive and the material of the sleeve and/or the drain pipe may flow into each other and a continuous transition is formed.
  • a very suitable glue is a hot melt glue which remains sticky even after cooling down.
  • the use of such a glue allows that, in case the sleeve comes loose from the drain pipe, the sleeve is again fixed to the drain pipe by contacting the sleeve with the adhesive and exerting some pressure on the sleeve.
  • other glues generally known to the man skilled in the art, may be used.
  • the sleeve is preferably fixed over substantially its entire length to the drain pipe. This allows the sectioning of the covered drain pipe in any desired site, without thereby adversely influencing the fixing of the sleeve to the drain pipe.
  • the sleeve may be fixed in cross direction of the drain pipe, in one or more sites to the drain pipe.
  • the adhesive may also be applied over the entire circumference of the drain pipe.
  • the covered drain pipe may further be enveloped by a second sleeve of a filter material.
  • the first sleeve may show finer or coarser meshes than the second sleeve, or the same.
  • the first and second sleeves may have a same or a different porosity.
  • the second sleeve is preferably fixed in longitudinal direction to the covered drain pipe, as described above for the sleeve.
  • a coupling piece is applied at an end of the drain pipe around the external wall of the drain pipe.
  • the coupling piece is mostly fixed in the drain pipe, and the end of the sleeve is secured between the wall of the drain pipe and the coupling piece.
  • this has the disadvantage that the knitting is stretched over the mostly sharp edge of the drain pipe, as a consequence of which the knitting shows an increased risk of fraying and partially looses its filtering action.
  • the coupling piece is fitted over the covered drain pipe, so that the knitting at the end of the drain pipe is covered and protected. This is especially important for drain pipes which are provided to be placed in vertical or substantially vertical direction into the ground.
  • Figure 1 is a view on the external side of the covered drain pipe obtained with the process according to the invention, whereby the sleeve has been partially omitted.
  • Figure 2 is a cross section of the covered drain pipe obtained with the process according to the invention.
  • This invention concerns a process for manufacturing of a covered drain pipe, whereby the sleeve 2 is knitted around the drain pipe 1, and the drain pipe 1 is used as a core.
  • the adhesive is applied to the drain pipe 1 simultaneously with the knitting of the sleeve 2.
  • Such a process allows to fix the sleeve 2 to the drain pipe, substantially simultaneously with the knitting.
  • the embodiment of the covered drain pipe shown in figure 1 obtained with the process of this invention comprises a drain pipe 1.
  • the drain pipe 1 may be manufactured from a watertight material, a porous material or a material which is permeable to water.
  • the drain pipe 1 may have various shapes. It may be cylindrical, or it may have any other desired shape.
  • the external wall 3 of the drain pipe may be smooth, ribbed or corrugated. If the drain pipe 1 is ribbed, mostly openings 5 are provided between the ribs 4 through which water may flow into or out of the pipe.
  • the drain pipe may be manufactured from various materials, for example polyethylene, polypropylene, polyvinyl chloride, a ceramic material or metal.
  • the drain pipe 1 is enveloped by a sleeve 2 of a filter material.
  • the filter material is preferably a knitting, which is permeable to water and possibly other liquids.
  • the sleeve 2 is preferably a cylindrically shaped seamless sleeve.
  • the sleeve 2 may be made from various materials.
  • the sleeve 2 may for example be a knitting of a yam of natural fibres, a polymer yarn or mixtures thereof. Suitable polymers include polyester, polyacryl, polyethylene, polypropylene.
  • the sleeve 2 may also be made from fibres of viscose, cellulose, acetates, tri-acetates or proteins.
  • the drain pipe 1 and sleeve 2 may be constructed from a same or from different materials.
  • the covered drain pipe may be enveloped once more by a second sleeve.
  • This second sleeve may be manufactured from a same material as the sleeve 2, or a different material.
  • the second sleeve may be manufactured from a knitting with the same or different meshes and the same or a different porosity as the sleeve 2.
  • the second sleeve is preferably also fixed to the covered drain pipe by means of an adhesive.
  • the sleeve 2 is in longitudinal direction of the drain pipe 1 fixed to the drain pipe.
  • This may for example be realised by means of a continuous strip of an adhesive 6, which is for example applied in longitudinal direction or diagonally on the drain pipe. It is also possible to apply two or more strips of an adhesive to the drain pipe, which may be parallel, or not.
  • the adhesive may be applied in the form of a continuous strip, a regularly interrupted strip, or as a series of dots in longitudinal direction of the drain pipe, or as a series of dots which are distributed regularly or randomly over the circumference of the drain pipe.
  • the adhesive 6 is thereby preferably selected such, that it shows a good affinity to the material of the drain pipe 1 and the material of the sleeve 2.
  • the adhesive 6 may for example be a cold glue, or a hot melt glue which is applied in a hot state to the drain pipe 1.
  • the adhesive 6 and the drain pipe 1 may also be manufactured from a same material. In that case, the adhesive 6 is preferably applied in the hot, molten state to the external wall 3 of the drain pipe.
  • the hot molten adhesive 6 is capable of melting a surface layer of the external wall 3 of the drain pipe 1, as a consequence of which both phases at least partially blend into each other, so as to obtain a good adhesion of the sleeve 2 to the drain pipe 1.
  • the adhesive 6 is preferably coloured in a colour differing from the colour of the sleeve 2. In that case, the sites in which the sleeve 2 is fixed to the drain pipe 1, and thus the sites in which the covered drain pipe may be sectioned without thereby adversely influencing the filtering action of the sleeve 2, become visible.
  • the drain pipe 1 is preferably at least at one end provided with a coupling piece 7.
  • the coupling piece 7 envelops the external wall 3 of the drain pipe 1.
  • the sleeve 2 is secured between the external wall 3 and the internal wall 10 of the coupling piece 7.
  • the coupling piece may be fixed in various ways to the drain pipe.
  • the coupling piece 7 may comprise a cylindrically shaped pipe which is clamped around the covered drain pipe.
  • the coupling piece 7 may be fixed to the drain pipe by means of glueing or in a mechanical way, for example by means of stapling. Staples form a cheap fixing, which may be applied rapidly.
  • the coupling piece 7 may for example also comprise a screw thread, which engages the ribs of the drain pipe.
  • the coupling piece 7 may be provided for the sealing of the drain pipe. In that case, one end of the coupling piece 7 is closed.
  • the coupling piece 7 may also be provided for the coupling of two or more drain pipes.
  • the covered drain pipe obtained with the process of this invention is suitable for use in different fields of application. It may for example be used for a permanent draining of a ground, a building, or a sports site. In that case, it is mostly applied horizontally in the ground. It may also be used as a discharge pipe to return water to the ground.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Resistance Heating (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Claims (8)

  1. Verfahren zur Herstellung eines ummantelten Drainagerohres, umfassend ein Drainagerohr, das von einer Umhüllung aus einem Maschen-Filtermaterial umgeben ist, dadurch gekennzeichnet, dass die Umhüllung um das Drainagerohr herum gewirkt ist und dass die Umhüllung, während sie gewirkt wird, im wesentlichen gleichzeitig an dem Drainagerohr befestigt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Umhüllung am Drainagerohr in Längsrichtung des Drainagerohres befestigt ist.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Umhüllung am Drainagerohr über im wesentlichen die gesamte Länge des Drainagerohres befestigt ist.
  4. Verfahren nach einem der Ansprüche 1-3, dadurch gekennzeichnet, dass die Umhüllung am Drainagerohr mittels eines heißschmelzenden Klebstoffs befestigt ist.
  5. Verfahren nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass die Umhüllung am Drainagerohr mittels eines durchgängig verlaufenden Klebstoffstreifens befestigt ist, der in Längsrichtung des Drainagerohres aufgebracht ist.
  6. Verfahren nach einem der Ansprüche 1-5, dadurch gekennzeichnet, dass die Umhüllung am Drainagerohr mittels Klebstoffpunkten befestigt ist, die nach dem Zufallsprinzip um den Umfang des Drainagerohres aufgebracht sind.
  7. Verfahren nach einem der Ansprüche 1-6, dadurch gekennzeichnet, dass die zweite Umhüllung des Filtermaterials um das ummantelte Drainagerohr herum angeordnet ist.
  8. Verfahren nach einem der Ansprüche 1-7, dadurch gekennzeichnet, dass an einem Ende des Drainagerohres um die Außenwand des Drainagerohres herum ein Kopplungsstück angeordnet ist.
EP98202189A 1998-06-30 1998-06-30 Ummanteltes Drainagerohr Expired - Lifetime EP0969151B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE69825039T DE69825039T2 (de) 1998-06-30 1998-06-30 Ummanteltes Drainagerohr
DK98202189T DK0969151T3 (da) 1998-06-30 1998-06-30 Dækket drænrör
EP98202189A EP0969151B1 (de) 1998-06-30 1998-06-30 Ummanteltes Drainagerohr
AT98202189T ATE271161T1 (de) 1998-06-30 1998-06-30 Ummanteltes drainagerohr
ES98202189T ES2226062T3 (es) 1998-06-30 1998-06-30 Tubo de drenaje recubierto.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98202189A EP0969151B1 (de) 1998-06-30 1998-06-30 Ummanteltes Drainagerohr

Publications (2)

Publication Number Publication Date
EP0969151A1 EP0969151A1 (de) 2000-01-05
EP0969151B1 true EP0969151B1 (de) 2004-07-14

Family

ID=8233864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98202189A Expired - Lifetime EP0969151B1 (de) 1998-06-30 1998-06-30 Ummanteltes Drainagerohr

Country Status (5)

Country Link
EP (1) EP0969151B1 (de)
AT (1) ATE271161T1 (de)
DE (1) DE69825039T2 (de)
DK (1) DK0969151T3 (de)
ES (1) ES2226062T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045476A1 (en) * 2011-09-26 2013-04-04 Igg-Internationale Geotextil Gesellschaft Mbh Irrigation mat
US9668432B2 (en) 2011-09-26 2017-06-06 Hunter Industries, Inc. Subsurface irrigation mat

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAR20030017A1 (it) * 2003-04-04 2004-10-05 Riccini S R L Tubo avvolto per drenaggio nonche' metodo e macchina
DE102005023150A1 (de) * 2005-02-21 2006-08-31 Sabine Saupe Gestrickter Filter mit Verstärkung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1634078A1 (de) * 1967-08-16 1971-02-25 Wilhelm Hegler Draenage-Rohr aus Kunststoff,dessen Wandung Querwellen aufweist
BE764108A (fr) * 1971-03-11 1971-08-02 Smet Hugo Dispositif de drainage horizontal ou vertical.
US3976578A (en) * 1974-06-25 1976-08-24 Beane Frank Thomas Protective sleeve for corrugated drainage tubes
US4288321A (en) 1975-10-29 1981-09-08 Beane Frank Thomas Drain tile and pile fabric filter sleeve
DE7820028U1 (de) 1978-07-04 1978-10-12 Hoechst Ag, 6000 Frankfurt Filterrohr
EP0208043A1 (de) 1985-07-12 1987-01-14 Rolf Jansrudvangen Verfahren zur Herstellung streifenförmigen Filtermaterials zur Verwendung auf Drainagerohren
US5466092A (en) * 1993-10-25 1995-11-14 Semenza; Christopher G. Form-drain filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013045476A1 (en) * 2011-09-26 2013-04-04 Igg-Internationale Geotextil Gesellschaft Mbh Irrigation mat
US9668432B2 (en) 2011-09-26 2017-06-06 Hunter Industries, Inc. Subsurface irrigation mat
US9795094B2 (en) 2011-09-26 2017-10-24 Hunter Industries, Inc. Irrigation mat

Also Published As

Publication number Publication date
EP0969151A1 (de) 2000-01-05
DE69825039D1 (de) 2004-08-19
ATE271161T1 (de) 2004-07-15
DE69825039T2 (de) 2005-08-18
ES2226062T3 (es) 2005-03-16
DK0969151T3 (da) 2004-11-22

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