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WO2001081805A2 - Procede pour former du materiau de reparation destine a une zone d'interface de conduite et pour reparer une conduite non lineaire avec du materiau de reparation a fibres - Google Patents

Procede pour former du materiau de reparation destine a une zone d'interface de conduite et pour reparer une conduite non lineaire avec du materiau de reparation a fibres Download PDF

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Publication number
WO2001081805A2
WO2001081805A2 PCT/US2001/013245 US0113245W WO0181805A2 WO 2001081805 A2 WO2001081805 A2 WO 2001081805A2 US 0113245 W US0113245 W US 0113245W WO 0181805 A2 WO0181805 A2 WO 0181805A2
Authority
WO
WIPO (PCT)
Prior art keywords
resin
repair material
fibers
providing
conduit
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/US2001/013245
Other languages
English (en)
Other versions
WO2001081805A3 (fr
Inventor
Mark Sloan
Richard D. Blackmore
William M. Lepola
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.)
IHC REHABILITATION PRODUCTS
Original Assignee
IHC REHABILITATION PRODUCTS
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 IHC REHABILITATION PRODUCTS filed Critical IHC REHABILITATION PRODUCTS
Priority to US10/258,294 priority Critical patent/US20040016467A1/en
Priority to AU2001257229A priority patent/AU2001257229A1/en
Publication of WO2001081805A2 publication Critical patent/WO2001081805A2/fr
Publication of WO2001081805A3 publication Critical patent/WO2001081805A3/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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/179—Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/003—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised by the matrix material, e.g. material composition or physical properties
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/22—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
    • B29C70/222—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure the structure being shaped to form a three dimensional configuration
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
    • 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
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/1683—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of a patch which is fixed on the wall of the pipe by means of an adhesive, a weld or the like
    • 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
    • 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
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B29K2105/0827—Braided fabrics
    • 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
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B29K2105/0836—Knitted fabrics
    • 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
    • B29L2023/005—Hoses, i.e. flexible
    • B29L2023/006—Flexible liners
    • 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
    • B29L2031/246—T-joints

Definitions

  • This invention pertains to the repair of an interface between a first conduit and a second
  • this invention pertains to the use and fabrication of resin impregnated
  • repair materials for repairing an interface between a first conduit and a second conduit.
  • This invention also pertains to the repair of non-linear conduits. More particularly, this
  • invention pertains to the use of flexible repair materials formed from fibers for the repair of non ⁇
  • sewage pipes are often referred to as sewage pipes, and include both the main and the lateral which leads to the
  • CIPP pipe lining
  • repair material at the location ofthe damage can be cured in a number of different ways, including using steam, hot water, or applying an electric current to resistively
  • the CIPP approach is not limited to the repair of either main or lateral conduits.
  • the CIPP approach can be used to repair a rupture in a lateral conduit near the interface
  • flange is sewn to the lateral repair material. Although the flange segment is fastened to the
  • the resulting seam represents a weakened area in the repair material.
  • the resin changes phase and bonds to fibers in the
  • Resin can be introduced into the repair material in a number of ways, including
  • Resin and fiber redistribution can occur in both vertical and horizontal segments ofthe
  • repair material is configured for the interface area
  • conduit, resin and fiber redistribution can occur in all areas ofthe repair material.
  • Conduits are often referred to as pipes, and include both the main and the lateral, which
  • a lateral conduit originates at one location (i.e. a building or home)
  • a lateral conduit can have either a
  • the lateral conduit has a linear configuration to the main conduit.
  • conduits are found in water treatment plants, chemical plants, and manufacturing facilities. Others can be embedded into the walls of buildings and structures for the conveyance
  • lateral conduit delineates from a straight line and has at least one curved portion before reaching
  • the wrinkled repair material causes an obstruction that impedes and reduces flow ofthe
  • the repair material is formed by taking a generally flat sheet
  • Curing ofthe rigid repair material is effectuated by resistively heating conductive
  • the conductive materials that are positioned longitudinally within the repair material.
  • the conductive materials are positioned longitudinally within the repair material.
  • the present invention provides a method for producing a repair material for use in
  • a mold having similar dimensions
  • the interface area is defined by a first conduit and a flange connecting the
  • a repair material having a material structure, the
  • material structure defined by an arrangement of fibers such that the material structure has similar
  • a resin is provided, the resin having a resin viscosity.
  • An additive is provided, the
  • the additive is adapted to increase the resin viscosity.
  • the additive is mixed with the resin to form a
  • the repair material is placed in intimate contact with the mold.
  • the mold includes a
  • the resin-additive mixture is introduced into the
  • the repair material such that the resin-additive mixture adheres to the fibers ofthe material
  • the repair material is removed from the mold.
  • a flexible membrane is placed over the
  • repair material and the mold A vacuum is then created between said the repair material and the mold.
  • the present invention also provides a method of repairing a damaged section of a non ⁇
  • a repair material is provided with a
  • the material structure adapted to engage an interior surface of a non-linear conduit.
  • repair material is flexible and seamless.
  • a curable resin is introduced into the repair material by either injection or infusion depending on
  • repair material is placed in the conduit in close proximity to a
  • the material structure is cylindrical to facilitate conformity with the non-linear
  • the material structure is flexible and can be formed by braiding the fibers.
  • braided repair material is formed with its reinforcing fibers positioned helically rather
  • these fibers have the ability to
  • the fibers can be electrically conductive fibers, for example carbon fibers.
  • an electric current can be caused to flow through the conductive fibers to
  • the fibers can be a combination of electrically
  • conductive fibers and non-conductive fibers which include polyester, glass, aramid, and quartz
  • thermoplastic fibers such as, but not limited to, polypropylene, nylon and
  • the seamless material structure is formed by
  • the repair material is produced by interlooping continuous chains
  • the finished tubular structure is flexible and able to conform to irregular conduit geometries.
  • Narious reinforcing materials can also be included in the knit construction to accommodate both
  • electrically conductive fibers can be used such that
  • resistive heating is feasible to cure the resin.
  • the seamless material structure is formed
  • a first material layer is a cylindrical tube
  • the first material layer is nested within the second material layer and then stitch-bonded together
  • Stitch-bonding is a method by which
  • the consolidation results from either continuous or intermittent stitching or sewing through the
  • electrically conductive fibers can be used such that resistive
  • the seamless material structure is formed
  • a first material layer is a cylindrical tube
  • the first material layer is nested within the second material layer and then needle-punched with a
  • the needle board to form the material structure.
  • the needle board has a plurality of needles such that
  • the needles penetrate the first material layer.
  • needles are driven through the first material
  • electrically conductive fibers can be used such that resistive heating is feasible to
  • an additive adapted to increase the curable
  • the additive is mixed with the curable resin to form a resin-additive
  • additive mixture stabilizes the fibers and the material layers.
  • electrically conductive material stabilizes the fibers and the material layers.
  • fibers can be used such that resistive heating is feasible to cure the resin.
  • Figure 1 is a perspective view of a lateral conduit intersecting a main conduit;
  • Figure 2 is a perspective view ofthe repair material configured for an interface area;
  • Figure 3 is a cross-sectional view of a lateral conduit intersecting a main conduit
  • Figure 4 is a perspective view of a mold and repair material in accordance with one
  • Figure 5 is a cross-section of a repair material made in accordance with one aspect ofthe
  • Figure 6 is another cross-section of a repair material made in accordance with one aspect
  • Figure 7 is a repair material braided in accordance with one aspect ofthe present
  • Figure 8 is a repair material having a helical fiber arrangement made in accordance with
  • Figure 9 is a cross-sectional view of a non-linear conduit having a predominantly vertical
  • Figure 10 is a repair material knitted in accordance with one aspect ofthe present
  • the present invention provides a method of producing a repair material for use in
  • Figures 1 and 3 provide an area where the geometry of any repair material must
  • the method includes providing a mold 11 (shown in Figure 4) having similar dimensions
  • interface area 10 is defined by a first conduit 12 and a flange 14
  • the first conduit 12 can be either a main
  • the second conduit 16 can be either a lateral or a main conduit.
  • the material structure 20 is defined by an arrangement of fibers (not shown)
  • the mold 11 has a mold surface 15 capable of supporting the repair material 18.
  • repair material 18 is flexible and seamless.
  • the material structure 20 results from a seamless combination of fibers forming a
  • the resin can be either a
  • thermoset or thermoplastic variety thermoset or thermoplastic variety.
  • An additive is further provided that increases the resin
  • the additive is formulated to increase
  • the resin has been introduced into the repair material 18.
  • the additive is mixed with the resin to
  • the viscosity increasing function can be controlled by varying the
  • the repair material 18 is placed in intimate contact with the mold 11 such that mold
  • repair material 18 Depending upon the type of resin used, the introduction process can be either
  • the resin-additive mixture is allowed to wet-out or permeate the repair
  • the additive must be any additive material 18 such that the resin-additive mixture adheres to the fibers.
  • the additive must be any additive that adheres to the fibers.
  • the additive should begin to increase
  • a period of time should elapse between when the mixture is introduced into the repair material and when the additive has raised the viscosity ofthe resin.
  • this period of time can vary between minutes to hours.
  • the resin-additive mixture and the fibers are secured and stabilized into a cohesive mass.
  • the repair material is
  • the fibers can be knitted using a polar knitting process. This
  • fibers including carbon and aramid fibers, can be used in the polar knitting process.
  • thermoplastic fibers such as, but not limited to, polypropylene, nylon and
  • polyethylene can be included in the repair material.
  • the fibers can be braided to form the seamless shape
  • the helical arrangement of braided fibers provides
  • the seamless repair material 18 can be any suitable material.
  • the seamless repair material 18 can be any suitable material.
  • the seamless repair material 18 can be any material formed from polyester fibers, glass fibers, or nylon fibers.
  • the seamless repair material 18 can be any material formed from polyester fibers, glass fibers, or nylon fibers.
  • thermoplastic fibers including but not limited to polyethylene terephthalate fibers and polypropylene.
  • the additive must be formulated to timely increase the resin viscosity
  • an example of a suitable additive is a combination of propoxylated bisphenol-A,
  • diphenylmethane-diisocyanate diphenylmethane-diisocyanate, and dibutylin dilaurate catalyst.
  • a flexible membrane can be placed over the repair
  • the mold has two portions.
  • the first portion has a mold
  • the second portion has a corresponding
  • the repair material 18 is
  • a flexible film formed into a tubular configuration
  • the internal cavity is adapted to contain the
  • repair material After the resin-additive mixture is formed, the repair material is placed in the
  • the resin-additive mixture is then introduced into the repair
  • repair material is removed from the internal cavity.
  • a flexible membrane can be used to create a vacuum. Instead of removing the repair material from
  • the repair material can remain in the internal cavity until time of use.
  • the present invention can be used to produce repair
  • the resin-additive mixture is introduced into only a
  • the additive is formulated from expensive components.
  • the repair material 18 has a
  • the mixture can be
  • the repair material 18 can be produced while in the
  • the mold is inserted inside the conduit requiring repair and the repair material
  • additive formulated to increase the resin viscosity is also provided.
  • the additive is mixed with the resin to form a resin-additive mixture which is then introduced into the repair material 18
  • a conventional curing method is then utilized to cure the repair material 18. For example, an electric current can be applied to conductive fibers in the mold to resistively heat the mold and cure the repair materials.
  • the present invention also provides a method of repairing a damaged section of a non ⁇
  • non-linear conduit 110 such as that shown in Figure 9.
  • the non-linear conduit 110 is
  • the method comprises providing a repair material 118 with a material structure adapted
  • repair material 118 is flexible
  • a flexible and seamless repair material is able to adapt and conform to of the interior
  • repair material 118 will neither bind nor wrinkle to cause obstructions to material flow in the
  • a curable resin is introduced into the repair material 118 by either injection or
  • the resin can be either thermoset or
  • thermoplastic and more specifically could be a polyester resin, a vinylester resin, a urethane-
  • polyester resin a urethane-vinylester resin, an epoxy resin, or a polyurethane resin.
  • the repair material is placed in the conduit in close proximity to a damaged portion
  • the material structure 118 is substantially cylindrical (as shown in Figure 8) to
  • the material structure is flexible and
  • a braided configuration is shown in Figure 7. In braiding,
  • triaxial braiding can be
  • these fibers have the ability to change their braid angle, and conform simultaneously to
  • the density ofthe fiber braid can be any density of the fiber braid.
  • the material present in a volumetric area can be reduced.
  • each other otherwise known as the braid angle
  • the braid angle is
  • the fibers are positioned closer to perpendicular or vertical and the hoop strength of
  • Narious reinforcing materials can be used.
  • the fibers can be electrically conductive fibers, for example carbon fibers.
  • an electric current can be caused to flow through the conductive fibers
  • the fibers can be a combination of electrically conductive fibers and non-conductive fibers, which include polyester, glass, aramid,
  • the electrically conductive fibers have an exterior layer
  • the non-conductive material is adapted to
  • the seamless material structure 118 is formed by knitting the fibers. In knitting, the
  • repair material is produced by interlooping continuous chains of fibers in a circular fashion.
  • the finished tubular structure is inherently flexible.
  • the finished tubular structure is inherently flexible.
  • the actual fiber length may be as long as two inches. This allows
  • electrically conductive fibers can be used such that resistive heating is feasible to cure the resin.
  • the seamless material structure is formed from a
  • a first material layer is a seamless, cylindrical tube
  • the material layers are formed from an arrangement of fibers, preferably either
  • the first material layer is nested within the second material layer and then stitch-bonded together with a stitching thread to form the material structure.
  • the stitching thread is elastic to further ensure flexibility ofthe repair material.
  • electrically conductive fibers can be used such that resistive heating is feasible to cure the resin.
  • Stitch-bonding is a method by which different materials can be consolidated into various
  • Reinforcing fibers can be any suitable material.
  • Stitch-bonding also allows the use of a wider variety of electrically
  • conductive material formats such as non-woven graphite formed into tapes. These tapes would
  • the seamless material structure is formed from a
  • a first material layer is a seamless, cylindrical tube
  • the material layers are formed from an arrangement of fibers, preferably either
  • the first material layer is nested within the second material layer and
  • the needle board has a
  • the fibers also provide
  • the characteristics ofthe repair material can be altered by varying the force
  • electrically conductive fibers can be used such that
  • resistive heating is feasible to cure the resin.
  • an additive adapted to increase the resin viscosity is
  • the additive is mixed with the resin to form a resin-additive mixture whereby the
  • the additive should be formulated
  • electrically conductive fibers can be used such that
  • resistive heating is feasible to cure the resin.
  • thermoplastic fibers 124 are used in conjunction with
  • These fibers can be one of a
  • thermoplastic films 130 may be any thermoplastics.
  • thermoplastic films 130 may be any thermoplastics.
  • thermoplastic films 130 may be any thermoplastics.
  • Narious non-electrically conductive fibers can be employed as
  • thermoplastic fibers and films thermoplastic fibers and films, resistive heating can be used to generate heat.
  • thermoplastic materials melt and flow, permeating the electrically conductive fibers
  • thermoplastic composite results when
  • the fibers can be in bundles 120 having both
  • thermoplastic material that forms part ofthe material structure 118.
  • bundles 128 of thermoplastic fibers 124 as shown in Figure 6. In both cases, the bundles may be

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

L'invention concerne un procédé pour produire du matériau de réparation (18) destiné à une zone d'interface de deux conduites (12, 16). Dans un aspect de l'invention, un moule possède des dimensions similaires à celles d'une zone d'interface. La zone d'interface est définie par une première conduite (12) et une bride (14) reliant la première conduite à la deuxième (16). Le matériau de réparation a une structure définie par un système de fibres, sélectionnée de manière à ce que la structure du matériau ait des dimensions similaires à la zone d'interface. Le matériau de réparation est placé en contact étroit avec le moule, de manière à ce que la surface du moule serve de support au matériau de réparation. Le mélange résine/additif est introduit dans le matériau de réparation. Une fois que le mélange résine/additif s'est entièrement collé et a fixé les fibres, on retire le matériau de réparation du moule. La présente invention concerne aussi un procédé pour réparer un segment endommagé d'une conduite non linéaire.
PCT/US2001/013245 2000-04-24 2001-04-24 Procede pour former du materiau de reparation destine a une zone d'interface de conduite et pour reparer une conduite non lineaire avec du materiau de reparation a fibres Ceased WO2001081805A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/258,294 US20040016467A1 (en) 2001-04-24 2001-04-24 Method of forming repair material for conuit interface area and for repairing a non-linear conduit with a fiber repair material
AU2001257229A AU2001257229A1 (en) 2000-04-24 2001-04-24 Method of forming repair material for conduit interface area and for repairing anon-linear conduit with a fiber repair material

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US19923400P 2000-04-24 2000-04-24
US60/199,234 2000-04-24
US19978300P 2000-04-26 2000-04-26
US60/199,783 2000-04-26

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WO2001081805A2 true WO2001081805A2 (fr) 2001-11-01
WO2001081805A3 WO2001081805A3 (fr) 2002-05-30

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WO2006061129A1 (fr) 2004-12-10 2006-06-15 Brandenburger Patentverwertung Gdbr Production d'un flexible tubulaire fibreux pour habiller l'interieur de conduites et de canalisations
CH702153A1 (de) * 2009-11-11 2011-05-13 Markus Bangerter Verbinden von flexiblen Strukturen.
WO2011104357A3 (fr) * 2010-02-26 2012-01-05 Trelleborg Pipe Seals Duisburg Gmbh Elément de revêtement, et procédé de fabrication d'un élément de revêtement
DE102013114630A1 (de) * 2013-12-20 2015-06-25 Trelleborg Pipe Seals Duisburg Gmbh Auskleidungselement zur Sanierung einer Rohrleitung
BE1024964B1 (fr) * 2017-04-10 2018-08-28 Rms Sprl Dispositif d'obturation rapide pour suppression d'un raccordement
WO2019019269A1 (fr) * 2017-07-26 2019-01-31 广船国际有限公司 Tuyau de traçage à la vapeur de type à bride et son procédé de montage

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006061129A1 (fr) 2004-12-10 2006-06-15 Brandenburger Patentverwertung Gdbr Production d'un flexible tubulaire fibreux pour habiller l'interieur de conduites et de canalisations
JP2008522866A (ja) * 2004-12-10 2008-07-03 ブランデンブルガー パテントフェアヴェルトゥング ゲゼルシャフト デス ビュルガーリッヒェン レヒツ 通路および管路を内側ライニングするための樹脂含浸させられた繊維チューブの製作
AU2005313575B2 (en) * 2004-12-10 2011-06-09 Brandenburger Patentverwertung Gdbr Production of a resin-impregnated fiber tube for internally lining conduits and pipes or pipe systems
JP4746627B2 (ja) * 2004-12-10 2011-08-10 ブランデンブルガー パテントフェアヴェルトゥング ゲゼルシャフト デス ビュルガーリッヒェン レヒツ 通路および管路を内側ライニングするための樹脂含浸させられた繊維チューブの製作
CH702153A1 (de) * 2009-11-11 2011-05-13 Markus Bangerter Verbinden von flexiblen Strukturen.
WO2011104357A3 (fr) * 2010-02-26 2012-01-05 Trelleborg Pipe Seals Duisburg Gmbh Elément de revêtement, et procédé de fabrication d'un élément de revêtement
US9568139B2 (en) 2010-02-26 2017-02-14 Trelleborg Pipe Seals Duisburg Gmbh Lining element and method of manufacturing a lining element
DE102013114630A1 (de) * 2013-12-20 2015-06-25 Trelleborg Pipe Seals Duisburg Gmbh Auskleidungselement zur Sanierung einer Rohrleitung
US9945504B2 (en) 2013-12-20 2018-04-17 Trelleborg Pipe Seals Duisburg Gmbh Lining element for the rehabilitation of a pipeline
BE1024964B1 (fr) * 2017-04-10 2018-08-28 Rms Sprl Dispositif d'obturation rapide pour suppression d'un raccordement
WO2019019269A1 (fr) * 2017-07-26 2019-01-31 广船国际有限公司 Tuyau de traçage à la vapeur de type à bride et son procédé de montage

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Publication number Publication date
AU2001257229A1 (en) 2001-11-07
WO2001081805A3 (fr) 2002-05-30

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