WO2019032302A1 - Élément tubulaire en polyéthylène renforcé - Google Patents

Élément tubulaire en polyéthylène renforcé Download PDF

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Publication number
WO2019032302A1
WO2019032302A1 PCT/US2018/043896 US2018043896W WO2019032302A1 WO 2019032302 A1 WO2019032302 A1 WO 2019032302A1 US 2018043896 W US2018043896 W US 2018043896W WO 2019032302 A1 WO2019032302 A1 WO 2019032302A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular member
fabric layer
polyethylene
tape elements
tubular members
Prior art date
Application number
PCT/US2018/043896
Other languages
English (en)
Inventor
Lawrence Cercone
Sr Daniel J. BOMAR
Original Assignee
Milliken & Company
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
Priority claimed from US15/672,422 external-priority patent/US10344904B2/en
Priority claimed from US15/672,410 external-priority patent/US20190049056A1/en
Application filed by Milliken & Company filed Critical Milliken & Company
Priority to CA3071614A priority Critical patent/CA3071614A1/fr
Priority to EP18759000.5A priority patent/EP3665005A1/fr
Priority to CN201880065119.3A priority patent/CN111183024A/zh
Publication of WO2019032302A1 publication Critical patent/WO2019032302A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes

Definitions

  • the present invention relates generally to polyolefin tubular members and other structures, and more particularly relates to a method and apparatus for repairing and/or joining polyolefin tubular members and other structures.
  • Polyolefin materials include the following: thermoplastic polyolefins:
  • PE polyethylene
  • PP polypropylene
  • PMP polymethylpentene
  • PB-1 polybutene-1
  • PEO Polyolefin elastomers
  • PIB polyisobutylene
  • EPR ethylene propylene rubber
  • EPDM rubber ethylene propylene diene monomer
  • tubular members are utilized to deliver or convey an assortment of media that may have corrosive chemical properties.
  • PE and PP tubular member is commonly used by gas utility companies, for example.
  • Such tubular members themselves may be deployed in environments that also subject the exterior of the tubular member to corrosive or otherwise physically or chemically damaging conditions.
  • Polyolefins are also materials from which various other types of structures, such as holding tanks, pressure vessels and the like, which may be deployed in harsh environments.
  • weld joints are susceptible to cracking over time, either due to external forces, such as soil movement or physical impact, or due to the material becoming brittle over time.
  • a strengthened polyethylene tubular member where the polyethylene tubular member has an outer surface, a circumference, a wall thickness, an area to be strengthened, and the outer surface of the polyethylene tubular member contains polyethylene.
  • the strengthened polyethylene tubular member contains a fabric layer wrapped around the circumference of the tubular member at least two full rotations and covering the area to be strengthened.
  • the fabric layer contains a plurality of interwoven tape elements with a base layer of a strain oriented olefin polymer disposed between covering layers of a heat fusible olefin polymer. The tape elements within the fabric layer are bonded together and the tape elements adjacent the tubular member are bonded to the tubular member.
  • a method for strengthening a polyethylene tubular member The polyethylene tubular member has an outer surface, a circumference, a wall thickness, and an area to be strengthened and the outer surface of the polyethylene tubular member contains polyethylene.
  • the method contains the step of wrapping a fabric layer around the circumference of the tubular member at least two full rotations and covering the area to be strengthened.
  • the fabric layer contains a plurality of interwoven tape elements with a base layer of a strain oriented olefin polymer disposed between covering layers of a heat fusible olefin polymer.
  • the method also contains the step of applying heat and optionally pressure to the fabric layer bonding the tape elements of the fabric layer together and bonding the tape elements and the tubular member together.
  • Figure 1 is a side, longitudinal cross-sectional view of a length of tubular member to be repaired in accordance with one embodiment of the invention
  • Figure 2 is a side, longitudinal cross-sectional view of the tubular member from Figure 1 having a filler material applied in an area to be reinforced thereof;
  • Figure 3 is a side, longitudinal cross-sectional view of the tubular member from Figure 2 having a reinforcement system applied over the repair area;
  • Figure 4 is a top view illustration of one embodiment of the fabric layer.
  • Figure 5 is a cross-sectional illustration of one embodiment of the tape elements.
  • Figure 6 is a side, longitudinal, cross-sectional view of two sections of tubular member aligned end-to-end in preparation for a joining operation in accordance with one embodiment of the invention
  • Figure 7 is a side, longitudinal, cross-sectional view of the two sections of tubular member from Figure 4 with the joint reinforced in accordance with one
  • Figure 8 is a side, longitudinal, cross-sectional view of two sections of tubular member having been welded together using a conventional butt fusion technique
  • Figure 9 is a side, longitudinal, cross-sectional view of the two welded sections of tubular member from Figure 6 with the joint reinforced in accordance with one embodiment of the invention.
  • the tubular member may 10 be many suitable thermoplastic, preferably polyolefin, preferably polyethylene (PE) or polypropylene (PP).
  • PE polyethylene
  • PP polypropylene
  • the tubular member 10 comprises polyethylene as it is a relatively
  • the polyethylene may be may suitable mono- or co- polymer of polyethylene including medium density polyethylene and high density polyethylene.
  • the tubular member wall contains more than one layer such as a metal tubular member coated with a layer of polyethylene on the outer surface of the metal.
  • the outer-most layer which forms the outer surface of the tubular member 10 contains polyolefin, preferably polyethylene.
  • the tubular member 10 may be any tubular shaped member that moves or holds material within the member.
  • the tubular member 10 may be a pipe, also referred to as a conduit, pipe, duct, and pipeline.
  • the tubular member may also be a holding tank (typically spherically or ellipsoid) or any other hollow member preferably having a generally circular or elliptical cross-sectional shape.
  • tubular member 10 has an area to be reinforced 12 on/in tubular member 10.
  • This area to be reinforced 12 is the area to be strengthened by the reinforcement system and may contain gouges, holes, pinholes, cracks, microcracks, butt splices.
  • the area to be reinforced 12 is a damaged area which damage extends at least partially through the wall of the tubular member 10. It may go only part way through the tubular member's wall or completely through the wall. Any concave deviation from a smooth outer surface may be
  • the damage has a depth of at least about 10% of the pipe wall thickness.
  • the defect has a depth of at least about 20%, 30%, or 50% of the pipe wall thickness.
  • the defect has a depth of the entire pipe wall thickness.
  • the area to be reinforced 12 is an area where a clamp was used on the tubular member 10 resulting in microcracks.
  • the area to be reinforced 12 is where two tubular members (20, 22) meet, where the area to be reinforced being the splice connecting two pipes.
  • the first step in reinforcing a tubular member 10 is to uncover the member 10 (in the case where there are additional layers on the member 10 or the member 10 is buried in the ground) and optionally clean the outer surface of the tubular member 10 to ensure good bonding of subsequent layers to the member 10.
  • the member 10 may be cleaned with any suitable cleaner including water, methanol, isopropyl alcohol, and methyl ethyl ketone (MEK).
  • the defect is then filled with a filler material 620 as shown in FIG. 2.
  • the filler may be any suitable filler material including, but not limited to, polyester, epoxy, vinyl ester, polyurethane, thermoplastic material, rubber compound, or acrylic, such as a methyl acrylate or thermoplastic material.
  • the filler material After the filler material has been applied and cured or otherwise hardened, it is then optionally sanded or otherwise removed so that the surface of the filled defect is approximately equal to the outer surface of the pipe 600.
  • the pipe 600 may be optionally cleaned again after the filler is applied and/or sanded.
  • the reinforcing system is applied to the area to be reinforced 12 of the member 10.
  • the reinforcing system comprises wrapping a fabric layer 18 around the circumference of the tubular member at least two full rotations and covering the area to be strengthened 12 as shown in Figure 3.
  • the fabric layer 18 is wrapped around the circumference of the tubular member at least four full rotations, covering the area to be strengthened 12.
  • the fabric layer 18 comprises a plurality of interwoven tape elements comprising a base layer of a strain oriented olefin polymer disposed between covering layers of a heat fusible olefin polymer.
  • the fabric layer is wrapped in a hoop or spiral wrapping pattern.
  • the fabric layer consists essentially of thermoplastic polymer.
  • the fabric layer 18 is a woven fabric comprising a plurality of interwoven tape elements 19 as shown in Figure 4.
  • the woven fabric layer 18 comprising tape elements 19 in a warp direction and tape elements 19 in a weft direction which is approximately perpendicular to the warp direction.
  • the woven fabric layer 18 has a thickness of between about 0.05 mm and 0.35 mm, more preferably between about 0.10 mm and 0.20 mm.
  • the tape elements 19 (shown in cross-section in Figure 5) comprise a base layer 30 of a strain oriented olefin polymer disposed between covering layers 32, 32' of a heat fusible olefin polymer.
  • the tape elements 19 within the woven fabric layer 18 are interwoven and crossover each other at crossover points and once heat is supplied, the tape elements 19 are bonded to other tape elements 19 at crossover points and the outer surface of the member.
  • the term "bonded” means held together, adhered, or attached and may also be referred to as fused. This bonding or fusing may be accomplished by using heat to partially melt and bond the elements together or by using an additional adhesive that may be heat, light, or monomer initiator, or UV activated.
  • the tape elements 19 are monofilament fibers having a rectangular cross-section and are continuous.
  • the tape element 19 is considered to have a rectangular cross-section even if one or more of the corners of the rectangular are slightly rounded or if the opposing sides are not perfectly parallel. Having a rectangular cross-section may be preferred for a variety of reasons. Firstly, the surface available for bonding is greater. Secondly, during a de-bonding event the whole width of the tape is under tension and shear points are significantly reduced or eliminated.
  • the tape elements 19 have a cross-sectional shape with a width between about 0.05 mm and 10 mm more preferably between about 0.1 mm and 5 mm and a height between about 10 ⁇ and 500 ⁇ more preferably between about 20 ⁇ and 200 ⁇ .
  • the aspect ratio comparing the width of the rectangular cross-section to the height of the rectangular cross-section is between about 0.25 and 500.
  • the tape elements 19 may be formed from any suitable material.
  • the tape elements comprise a thermoplastic polymer.
  • suitable materials include, but are not limited to, polypropylenes, polyethylenes, polyesters, polyamides, polyethers, copolymers of any of the above; glass, aramid, carbon, ceramic, nylon, polyetherimide, polyamide-imide, polyphenylene sulfide, polysulfones, polyimide, conjugated polymers, mineral fiber, natural fibers, metallic fiber or mixtures thereof.
  • the tape elements 50 have a tensile modulus of greater than 10 grams per denier as measured by ASTM method 381 1 -07 and/or a tensile strength of at least 100 MPa.
  • the tape elements comprise polypropylene.
  • the tape elements may be preferred for some applications due to its strength, ability to be oriented, and low cost.
  • the tape elements comprise polyethylene (including a co-polymer of polyethylene). Polyethylene is also preferred for some applications due to its strength, ability to be oriented, and low cost.
  • the tape elements 19 contain a base layer 30 of a strain oriented olefin polymer disposed between covering layers 32, 32' of a heat fusible olefin polymer as shown in Figure 5. Alternatively, it is contemplated that only a single covering layer may be present.
  • the base layer of the tape elements is preferably compatibly bonded to each of covering layers between their contiguous surfaces.
  • the covering layers have a softening temperature, or melting temperature, lower than that of the base layer.
  • the base layer may be, but is not limited to, a polyolefin polymer such as polypropylene, polyethylene, a polyester such as polyethyleneterephthalate, or a polyamide such as Nylon 6 or Nylon 6-6.
  • the base layer may be polypropylene or polyethylene.
  • the base layer may account for about 50-99 wt. % of the tape element, while the covering layers account for about 1 -50 wt. % of the tape element.
  • the base and covering layers are made up of the same class of materials to provide an
  • the material of covering layers is preferably a copolymer of propylene and ethylene or an a- olefin and has a lower melting temperature than the base layer.
  • a suitable tape element is TEGRISTM available from Milliken & Company.
  • the tape elements 19 may be produced in any suitable manner.
  • the tape elements 19 may be formed by slitting a film.
  • the film may be formed by any conventional means of extruding such multilayer polymeric films.
  • the film may be formed by blown film or cast film extrusion.
  • the film is then cut into a multiplicity of longitudinal strips of a desired width by slitting the film to yield tape elements having the desired cross-sections.
  • the tape elements 19 may then be drawn in order to increase the orientation of the tape element so as to provide increased strength and stiffness of the material.
  • an already oriented (mono or bi axially) film is then slit into tape elements.
  • the tape elements 19 are extruded from a slit die then oriented.
  • the process begins with slit extruding molten polymer to form fibers having a rectangular cross-section.
  • the die typically contains between 5 and 60 slits, each one forming a fiber.
  • the each slit die has a width of between about 15 mm and 50 mm and a thickness of between about 0.6 and 2.5 mm.
  • the fibers once extruded are typically 4 to 12 mm wide and after drawing are typically 1 to 3 mm wide.
  • the fibers may be extruded having one layer or may have a second layer and/or a third layer using co-extrusion.
  • the woven fabric layer 18 may be any suitable textile layer. This includes but is not limited to a woven but may also be a nonwoven, unidirectional, or knit textile.
  • the weft tape elements and the warp tape elements are formed into a so called plain weave wherein each weft tape element passes over a warp tape element and thereafter passes under the adjacent warp tape element in a repeating manner across the full width of the woven layer.
  • any number of other weave constructions as will be well known to those of skill in the art may likewise be utilized.
  • the weft tape elements may pass over two or more adjacent warp tape elements before transferring to a position below one or more adjacent warp fibers thereby forming a twill weave.
  • the term "interwoven" is meant to include any construction incorporating inter-engaging formation fibers.
  • the woven layers are, for example, plain, satin, twill, basket-weave, poplin, jacquard, and crepe weave woven layers.
  • the woven layers are either a plain or twill weave woven layer. It has been shown that plain weaves have good abrasion and wear characteristics. A twill weave has been shown to have good aesthetic properties.
  • the energy delivered is preferable heat, but may also be UV light or any other energy that causes the tape elements within the fabric layer 18 to bond to other tape elements 19 and to the outer surface of the member 10.
  • the energy is delivered as heat.
  • the heat may be supplied in any suitable form, preferably hot or heated air such as from a hot air blower.
  • the heat is applied until the pipe surface reaches a temperature of at least about 200 °F, more preferably at least about 250 °F, more preferably at least about 300 °F.
  • an energy delivery system in the form of an energy delivery machine as described in US 20170100880 Cercone et al. "Process and
  • Heat may be applied in any suitable method, preferably one that can be used out in the field such as heat guns, blow dryers, torches, and heated air. Pressure may also be applied while heating.
  • the pressure can be delivered by a cuff or wrapping, or preferably heat shrink film.
  • the heat shrink film is applied before heat is applied and is removed after the member and fabric layer have cooled.
  • the heat shrink film extends onto the outer surface of the member at least about 1 inch past the wrapped fabric layer.
  • a constrictor wrapping is wrapped around the circumference of the pipe over the fabric layer 18.
  • the constrictor wrapping is preferably a stretch polyolefin film treated with a release agent that applies hoop pressure to the fabric layer 18 while it cures insuring intimate contact between adjacent layers of the fabric and the outer surface of the member 10.
  • this film is perforated to allow reaction gasses to escape during cure.
  • the constrictor wrapping is a shrink wrap that as it is heated, contracts to provide additional pressure to the fabric layer 18 and member 10. If a constructor wrapping was used, then it may be removed after the heating is finished (or it can be left in place if desired).
  • micro-cracks may be considered to be defects.
  • the present invention may be employed to create a joint between two sections of tubular member, circumventing the need for a conventional butt fusion operation. This is shown in Figures 6-7.
  • FIG 6 there is shown a longitudinal, cross-sectional view of two members 10A and 10B oriented end-to-end in preparation of the creation of a joint there between.
  • the splice area is the area to be reinforced 12.
  • the fabric layer 18 is wrapped around the area to be reinforced 12 and then is heated (with optional pressure) as described before resulting in the cross-section diagram of Figure 7.
  • a bead of material 13 may be used to fill any gaps between the two members 10A, 10B or help adhere them together.
  • Figures 8 and 9 illustrate the invention using material 13 to fill the gap between the butt joint.
  • Two or more members may also be placed end to end within a coupler such that their respective ends are within the coupler.
  • the entire coupler area would be considered to be the area to be reinforced and the fabric layer 18 would cover the coupler and extend at least about 1 inch into the members.
  • the coupler may be made of any suitable material such as metal, or a polymer. It may be made of the same or different materials than the tubular members.
  • the coupler may contain more than two tubular members, such as three, four, or more members. The ends of the tubular members to be joined together must reside within the coupler, but they do not have to be physically touching. In one embodiment, the ends of the tubular members are in physical contact touching with nothing else between them.
  • the ends are close to each other, being separated by less than about 5 millimeters, more preferably less than 3 millimeters. In another embodiment, the ends are separated by a more substantial distance, between about 0.5 and 2 inches. In another embodiment, there is a material located between the ends of the tubular members, such as formed during butt fusion, adhesives, gaskets, or any other suitable material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un élément tubulaire en polyéthylène renforcé, l'élément tubulaire en polyéthylène présentant une surface extérieure, une circonférence, une épaisseur de paroi, une zone à renforcer, et la surface extérieure de l'élément tubulaire en polyéthylène contenant du polyéthylène. L'élément tubulaire en polyéthylène renforcé contient une couche de tissu enroulée autour de la circonférence de l'élément tubulaire pour former au moins deux tours complets et recouvrant la zone à renforcer. La couche de tissu contient une pluralité d'éléments de bande entrelacés, une couche de base d'un polymère oléfinique à orientation de contrainte étant disposée entre des couches de recouvrement d'un polymère oléfinique thermofusible. Les éléments de bande à l'intérieur de la couche de tissu sont liés ensemble et les éléments de bande adjacents à l'élément tubulaire sont liés à l'élément tubulaire.
PCT/US2018/043896 2017-08-09 2018-07-26 Élément tubulaire en polyéthylène renforcé WO2019032302A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA3071614A CA3071614A1 (fr) 2017-08-09 2018-07-26 Element tubulaire en polyethylene renforce
EP18759000.5A EP3665005A1 (fr) 2017-08-09 2018-07-26 Élément tubulaire en polyéthylène renforcé
CN201880065119.3A CN111183024A (zh) 2017-08-09 2018-07-26 加强的聚乙烯管状构件

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US15/672,422 2017-08-09
US15/672,410 2017-08-09
US15/672,422 US10344904B2 (en) 2017-08-09 2017-08-09 Strengthened polyethylene tubular member
US15/672,410 US20190049056A1 (en) 2017-08-09 2017-08-09 Method for strengthening a polyethylene tubular member

Publications (1)

Publication Number Publication Date
WO2019032302A1 true WO2019032302A1 (fr) 2019-02-14

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ID=63312456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2018/043896 WO2019032302A1 (fr) 2017-08-09 2018-07-26 Élément tubulaire en polyéthylène renforcé

Country Status (3)

Country Link
EP (1) EP3665005A1 (fr)
CN (1) CN111183024A (fr)
WO (1) WO2019032302A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014370A (en) * 1975-09-22 1977-03-29 Mcnulty Frank E Outer wrap for pipelines
EP1314923A1 (fr) * 2000-08-29 2003-05-28 Sekisui Chemical Co., Ltd. Tube haute pression composite et son procede de fabrication
US20040007279A1 (en) * 1998-10-09 2004-01-15 Sekisui Chemical Co., Ltd. Method for joining high-pressure composite pipes
US20130276932A1 (en) * 2012-04-19 2013-10-24 Composite Fluid Transfer LLC System and method for reinforcing composite pipes
WO2014075188A1 (fr) * 2012-11-16 2014-05-22 Shawcor Ltd. Ruban ou feuille renforcé(e) de fibres pour le renforcement d'un tuyau
US20170100880A1 (en) 2015-10-13 2017-04-13 Milliken Infrastructure Solutions, Llc Process and machine for reinforcing a thermoplastic pipe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070071960A1 (en) * 2005-09-27 2007-03-29 Eleazer Howell B Moldable fabric with variable constituents
US9316339B1 (en) * 2015-03-25 2016-04-19 Milliken & Company Method and apparatus for repair of polyolefin pipes and structures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014370A (en) * 1975-09-22 1977-03-29 Mcnulty Frank E Outer wrap for pipelines
US20040007279A1 (en) * 1998-10-09 2004-01-15 Sekisui Chemical Co., Ltd. Method for joining high-pressure composite pipes
EP1314923A1 (fr) * 2000-08-29 2003-05-28 Sekisui Chemical Co., Ltd. Tube haute pression composite et son procede de fabrication
US20130276932A1 (en) * 2012-04-19 2013-10-24 Composite Fluid Transfer LLC System and method for reinforcing composite pipes
WO2014075188A1 (fr) * 2012-11-16 2014-05-22 Shawcor Ltd. Ruban ou feuille renforcé(e) de fibres pour le renforcement d'un tuyau
US20170100880A1 (en) 2015-10-13 2017-04-13 Milliken Infrastructure Solutions, Llc Process and machine for reinforcing a thermoplastic pipe

Also Published As

Publication number Publication date
CN111183024A (zh) 2020-05-19
EP3665005A1 (fr) 2020-06-17

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