WO2004106793A2 - Conduites en polyethylene haute densite renforcees par du metal - Google Patents

Conduites en polyethylene haute densite renforcees par du metal Download PDF

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Publication number
WO2004106793A2
WO2004106793A2 PCT/IN2004/000144 IN2004000144W WO2004106793A2 WO 2004106793 A2 WO2004106793 A2 WO 2004106793A2 IN 2004000144 W IN2004000144 W IN 2004000144W WO 2004106793 A2 WO2004106793 A2 WO 2004106793A2
Authority
WO
WIPO (PCT)
Prior art keywords
pipes
hdpe
metal reinforced
layer
metal
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.)
Ceased
Application number
PCT/IN2004/000144
Other languages
English (en)
Other versions
WO2004106793A3 (fr
Inventor
Chitra Mohandas
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
Publication of WO2004106793A2 publication Critical patent/WO2004106793A2/fr
Publication of WO2004106793A3 publication Critical patent/WO2004106793A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement

Definitions

  • the invention relates to Metal Reinforced High Density Polyethylene Pipes. More particularly the invention relates to a Process of manufacturing Metal Reinforced High Density
  • Polyethylene Pipes wherein the pipes or the sections of pipe are corrosion resistance, high strength which is generally used for underground Sewage System.
  • the underground sewage system are laid for supplying liquid waste or water flows from place to place. They are supposed to withstand the load of the above ground level as well as they should work efficiently for flow of waste water / drinking water and the like.
  • the brittleness of the pipe used as well as associated problems of formation of deposits inside the pipes which not only hinders the flow of water but also blocks the water flowing through the system and reduces the diameter of pipes resulting in less flow.
  • the inventor with research has developed Metal Reinforced HDPE Pipes wherein they have sandwiched a Metal pipe with HDPE .
  • By extrusion layering process where the properties of metal as well as non corrosive plastic has been combined together to achieve the target thereby the problem of strength and resistance to corrosion has been solved apart from hindrances due to the deposit is also eliminated .
  • the continuity of the piping system has been solved by cutting profile opposing sections of the two separate pipes sealed by rubberised O - ring to make it leak proof from infiltration and ex- filtration.
  • Figl is the elevation of "Metal Reinforced High Density Polyethylene Pipes" .
  • Fig2 is the cross sectional view of "Metal Reinforced High Density Polyethylene Pipes" .
  • Fig3 is the plan of "Metal Reinforced High Density Polyethylene
  • sewage lines are laid using concrete, RCC pipes, PSC pipes, Brick lined sections which have less life span, because they are less corrosion resistant and more prone to structural failures owing to the brittle nature.
  • MS reinforced HDPE pipes which will have longer life span as they are more corrosion resistant and with less structural failures as Mild Steel & HDPE are less brittle.
  • Metal Reinforced High Density Polyethylene Pipes are manufactured according to the following process:
  • the required HDPE inner layer of appropriate thickness is formed around a mandrel, by an extrusion machine which produces the HDPE molten material (typically at 210 * C ) or the inner layer is directly extruded inside the MS pipe.
  • the middle Mild Steel reinforcement pipe is then inserted over the inner layer of HDPE pipe.
  • the outer layer of HDPE is then formed over the mild steel reinforcement pipe, making sure that the either end of the HDPE inner and outer layer are welded together so that the mild steel ring is not exposed at either side.
  • the reinforced pipe is then removed from the mandrel after allowing the HDPE outer layer to cool down and harden.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L'invention concerne des conduites en polyéthylène haute densité PEHD renforcées par du métal et constituées d'une conduite en acier doux (MS) d'un diamètre approprié (1) et présentant une couche intérieure (2) en PEHD d'une épaisseur appropriée et formée autour d'un mandrin à l'aide de machines d'extrusion qui forme la couche PEHD intérieure sur les conduites MS ; la couche PEHD extérieure (3) est extrudée sur la conduite renforcée par du métal de manière à obtenir une conduite renforcée par du métal prise en sandwich entre la couche intérieure et la couche extérieure de PEHD nécessitant un durcissement annulaire pour une utilisation dans un système d'égout.
PCT/IN2004/000144 2003-05-29 2004-05-28 Conduites en polyethylene haute densite renforcees par du metal Ceased WO2004106793A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN547MU2003 2003-05-29
IN547/MUM/2003 2003-05-29

Publications (2)

Publication Number Publication Date
WO2004106793A2 true WO2004106793A2 (fr) 2004-12-09
WO2004106793A3 WO2004106793A3 (fr) 2005-03-24

Family

ID=33485476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2004/000144 Ceased WO2004106793A2 (fr) 2003-05-29 2004-05-28 Conduites en polyethylene haute densite renforcees par du metal

Country Status (1)

Country Link
WO (1) WO2004106793A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100455866C (zh) * 2006-03-13 2009-01-28 甘国工 有极性聚合物和无极性聚合物与金属增强体复合的管道
CN100455867C (zh) * 2006-03-13 2009-01-28 甘国工 金属和聚乙烯复合的管道
CN106385828A (zh) * 2016-08-29 2017-02-15 山东胜伟园林科技有限公司 一种使用寿命长且排水性好的盐碱地用暗管

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731580A1 (de) * 1997-07-23 1999-01-28 Unicor Rohrsysteme Gmbh Verbundrohr
DE29713049U1 (de) * 1997-07-23 1997-09-18 Unicor Rohrsysteme GmbH, 97437 Haßfurt Verbundrohr
GB2332492A (en) * 1997-12-22 1999-06-23 Draftex Ind Ltd Multi-layer fuel pipe
DE20014466U1 (de) * 1999-11-03 2001-03-22 Hewing GmbH, 48607 Ochtrup Kunststoff-Metall-Verbundrohr
DE19953737C1 (de) * 1999-11-09 2001-07-05 Andre Anschuetz Mehrschichtverbundrohr
DE10022823A1 (de) * 2000-05-10 2001-11-22 Unicor Extrusionstechnik Gmbh Verfahren zur Herstellung von Mehrschicht-Metall-Verbundrohren

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100455866C (zh) * 2006-03-13 2009-01-28 甘国工 有极性聚合物和无极性聚合物与金属增强体复合的管道
CN100455867C (zh) * 2006-03-13 2009-01-28 甘国工 金属和聚乙烯复合的管道
CN106385828A (zh) * 2016-08-29 2017-02-15 山东胜伟园林科技有限公司 一种使用寿命长且排水性好的盐碱地用暗管

Also Published As

Publication number Publication date
WO2004106793A3 (fr) 2005-03-24

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