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EP4452623A1 - Tube d'insertion pour le revêtement de canalisations ou de conduits - Google Patents

Tube d'insertion pour le revêtement de canalisations ou de conduits

Info

Publication number
EP4452623A1
EP4452623A1 EP22818677.1A EP22818677A EP4452623A1 EP 4452623 A1 EP4452623 A1 EP 4452623A1 EP 22818677 A EP22818677 A EP 22818677A EP 4452623 A1 EP4452623 A1 EP 4452623A1
Authority
EP
European Patent Office
Prior art keywords
styrene
reaction material
vinyl toluene
weight
percent
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.)
Pending
Application number
EP22818677.1A
Other languages
German (de)
English (en)
Inventor
Daniel Will
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.)
Impreg GmbH
Original Assignee
Impreg GmbH
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 Impreg GmbH filed Critical Impreg GmbH
Publication of EP4452623A1 publication Critical patent/EP4452623A1/fr
Pending 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
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1656—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section materials for flexible liners
    • 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
    • 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
    • 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
    • B32B3/04—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 characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • 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
    • 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
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1651—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being everted
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/0278—Polyester particles
    • 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
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • 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
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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 invention relates to an insert hose for lining pipelines or ducts in need of rehabilitation, specifically the reaction resin with which one or more reinforcement layers of the insert hose are impregnated.
  • Insertion hoses also known as "liners" are used to reconstruct and rehabilitate damaged pipelines and ducts.
  • the insert hoses contain at least one reinforcement layer whose reinforcement material is impregnated with a reaction material.
  • the reinforcement material often consists of a glass fiber scrim or a combination of a glass fiber scrim and a random fiber layer (e.g. polyester needle felt), whereby the glass fiber scrim itself can comprise several scrim layers.
  • the reaction material hardens under the influence of UV radiation, steam or hot water. However, reaction materials that harden at normal temperatures are occasionally also used.
  • the inlay hose is drawn into the damaged pipeline or turned inside out (so-called inversion method) and then expanded using compressed air so that the inlay hose lies against the inner surface of the pipeline.
  • the reaction resin is then cured by means of UV radiation or steam, so that the hose insert forms a liquid-tight and usually also gas-tight inner surface of the renovated pipeline or sewer section.
  • polyester resins and vinyl ester resins generally consist of 45 to 70 percent by weight unsaturated polyester or vinyl ester (solids) and the remaining percent by weight styrene as the solvent.
  • the styrene dissolves the semi-solid to solid unsaturated polyester at room temperature or vinyl ester and thus forms a liquid resin with the ester, the viscosity of which can be adjusted within a wide range.
  • a viscosity of about 600 to 1000 mPa*s is usually set for impregnating the reinforcement material.
  • the styrene acts as a reaction partner for the reactive double bonds in the unsaturated polyester or in the vinyl ester during crosslinking. Without styrene, these esters cannot be cured efficiently.
  • polyester resins The high market share of polyester resins is mainly due to the fact that they have a good price-performance ratio.
  • the unreinforced material already provides usable mechanical properties after curing; these are further enhanced by the embedded reinforcement material.
  • Crosslinking by radical polymerisation leads to very rapid curing.
  • styrene may not be harmless during processing. In animal experiments with mice - but not with rats and other laboratory animals - styrene causes lung cancer. In addition, the mutagenic potential of styrene has been the subject of controversy for many years. Styrene evaporates in large quantities both during the impregnation of the reinforcement material, which is usually carried out at the factory, and during curing under heat and/or UV light, which is noticeable through a not unpleasant but clearly perceptible odor.
  • vinyl toluene which is a methyl styrene that has similar properties to styrene and is also considered to be a health problem. Insofar as styrene is mentioned below, this also applies analogously to vinyl toluene.
  • a methacrylate is sometimes used as an alternative to styrene; the corresponding resin systems are then referred to as styrene-free.
  • methacrylates are considerably more expensive than styrene, which, in view of the large quantities that are required for insert hoses, can mean that the renovation with an insert hose becomes uneconomical.
  • methacrylate-based resins have the disadvantage of lower reactivity. Since less and less heat or UV light reaches the outer reinforcement layers, especially with large hose thicknesses, curing there can sometimes take a very long time.
  • epoxy resins are basically styrene-free. However, some of their ingredients are allergenic and not completely odorless. In addition, due to the short pot life, epoxy resins can only be applied shortly before the insertion hose is pulled in, which is not desirable in terms of industrial hygiene or production technology.
  • peroxides are labile compounds and can show explosive and oxidizing behavior, especially in higher concentrations and at elevated temperatures.
  • EP 2 525 130 A1 solves the problem of insufficient curing by applying a special size (i.e. a type of adhesion promoter) to the glass fibers of the reinforcement layers, which increases the absorption coefficient of the insert tube for the UV light is reduced in such a way that a peroxide-free reaction mass can be cured with UV light even with hose thicknesses of more than 10 mm.
  • a special size i.e. a type of adhesion promoter
  • this approach has not been implemented for various reasons. Above all, this includes the costs incurred for the application of the special sizing and added to the already high costs for the methacrylates.
  • the object of the invention is to specify an insert tube which at least partially solves the problems associated with the use of styrene.
  • an insert hose for lining pipelines or ducts with an inner film, an outer film pointing to an inner wall of the pipeline or duct when installed, and with at least one reinforcement layer arranged between the inner film and the outer film, which is a reinforcement material has, which is impregnated with a curable reaction material.
  • the reaction material contains a solid and a solvent mixture, the solid in the reaction material having a solids content ranging from 45 to 65% by weight.
  • the solvent mixture is a mixture of styrene and/or vinyl toluene and at least one solvent other than styrene and vinyl toluene, the styrene and/or vinyl toluene in the solvent mixture being between 5 and 80% by weight, preferably between 15 and 50% by weight.
  • styrene or vinyl toluene on the one hand and styrene-free solvents such as methacrylate (particularly butanediol dimethacrylate) on the other are chemically well tolerated and can be processed very well as a mixture.
  • the total proportion of styrene and/or vinyl toluene in the reaction material can be reduced from 30 to 55 percent by weight to, for example, 5 to 20 percent by weight.
  • the small proportion of styrene and/or vinyl toluene ensures that the reaction material cures quickly and completely after the insertion tube has been pulled in under the influence of heat and/or UV radiation.
  • the low proportion of styrene and/or vinyl toluene causes increased permeability to UV radiation due to the better interaction with the size surrounding the glass fibers compared to methacrylate, which also has a favorable effect on the UV-induced curing.
  • Low-styrene resins are known in the prior art. However, the low styrene content is only achieved there by reducing the solvent content to around 30%. This is not enough for use as a reaction material in hose inserts. A proportion of the solids in the reaction material of between 52 and 58 percent by weight is preferred there—and also for the present invention.
  • the solid contained in the reaction material can be, in particular, unsaturated polyester resin or vinyl ester resin.
  • the polyester resin can contain a combination of isophthalic acid and neopentyl glycol or a combination of orthophthalic acid and neopentyl glycol.
  • the subject matter of the invention is also a lining pipe which was obtained from an insert hose according to the invention, in that the insert hose, which was initially folded together, was expanded and the reaction material was cured.
  • the invention also relates to a method for producing an insert hose for lining pipelines or ducts, with the following steps: a) feeding in a tubular inner film; b) supplying at least one reinforcement layer which has a reinforcement material, c) enclosing the at least one reinforcement layer with an outer film; d) impregnating the at least one reinforcement layer with a curable reaction material, the reaction material containing a solid and a solvent mixture, and the solid in the reaction material having a proportion of between 45 and 65 percent by weight, the solvent mixture being a mixture of styrene and/or or vinyl toluene and at least one solvent which is not styrene or vinyl toluene, the styrene and/or vinyl toluene being present in the solvent mixture in an amount between 5 and 80% by weight.
  • FIG. 1 shows a cross section through an insert hose according to the invention after it has been installed in a damaged pipeline
  • FIG. 2 shows the insertion tube shown in FIG. 1 prior to installation, but without the outer film.
  • FIG. 1 shows an example of an insert hose 10 after it has been installed in a pipeline 12.
  • the insert hose 10 has a multi-layer structure, which can be seen better in the enlarged detail A.
  • the insert tube 10 comprises a styrene-tight Inner foil IF and an outer foil AF pointing to an inner wall 14 of the pipeline 12 when installed.
  • a reinforcement layer VS which comprises a plurality of reinforcement layers, is arranged between the inner film IF and the outer film AF.
  • Each reinforcing layer contains a reinforcing material impregnated with a UV-curable reactive material.
  • the composition of the reaction material is explained in Section 2.
  • the insertion tube 10 includes an intermediate film ZF, which is arranged between the outer film AF and the reinforcement layer VS.
  • the insert hose 10 and in particular its hardened reinforcement layer VS, forms a liquid and gas-tight new inner surface of the pipeline 12, so that liquid 15 guided therein cannot escape from cracks 16, ruptures 18 or other damage to the pipeline 12.
  • FIG. 2 shows the insert hose 10 prior to installation in the pipeline and without the intermediate film ZF and the outer film AF.
  • Three reinforcement layers VL1, VL2, VL3 are wrapped around the tubular and flattened inner film IF, which together form the reinforcement layer VS shown in Figure 1 and each have a glass fiber fabric as reinforcement material, which is impregnated with the UV-curable reaction material.
  • Each reinforcement layer VL1, VL2, VL3 has an overlapping area B1, B2 or B3, in which longitudinal sides of the reinforcement layers VL1, VL2, VL3 that are opposite one another in a circumferential direction U overlap loosely (i.e. without being connected).
  • the reaction material is a polyester resin which consists of 52 percent by weight of an unsaturated polyester resin as a solid and 48 percent by weight of a solvent mixture.
  • the solution medium mixture is a mixture of a good 31 percent by weight of styrene and almost 69 percent by weight of butanediol dimethacrylate (BDDMA). This corresponds to a total proportion of styrene in the reaction material of 15 percent by weight and a total proportion of butanediol dimethacrylate in the reaction material of 33 percent by weight.
  • BDDMA butanediol dimethacrylate
  • the table below contains the results of comparative tests.
  • the starting point was a solvent mixture proportion of 48 percent by weight, but the proportion of styrene in the reaction material was varied.
  • the first and last line corresponds to the state of the art, i.e. a styrene-free reaction material or a reaction material that only contains styrene as a solvent.
  • the reactivity can be increased to 250 kJ/kg with a comparatively small styrene content of 15%, which is sufficient for curing thicker inner tubes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un tube d'insertion (10) pour le revêtement de canalisations (12) ou de conduits, comprenant un film intérieur (IF), un film extérieur (AF) qui, à l'état installé, fait face à une paroi intérieure (14) de la canalisation (12) ou du conduit, et au moins une couche de renforcement qui est disposée entre le film intérieur (F) et le film extérieur (AF). Ladite couche de renforcement comprend un matériau de renforcement imprégné d'un matériau de réaction durcissable. Le matériau de réaction contient un solide et un mélange de solvants, le solide dans le matériau de réaction présentant une proportion comprise entre 45 et 65 % en poids. Selon l'invention, le mélange de solvants est un mélange de styrène et/ou de vinyltoluène et d'au moins un solvant qui n'est pas du styrène ou du vinyltoluène. Le styrène et/ou le vinyltoluène dans le mélange de solvants présente une proportion comprise entre 5 et 80 et, de préférence, entre 15 et 50 % en poids.
EP22818677.1A 2021-12-22 2022-11-17 Tube d'insertion pour le revêtement de canalisations ou de conduits Pending EP4452623A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021134231.7A DE102021134231B4 (de) 2021-12-22 2021-12-22 Einlegeschlauch zum Auskleiden von Rohrleitungen oder Kanälen
PCT/EP2022/082319 WO2023117228A1 (fr) 2021-12-22 2022-11-17 Tube d'insertion pour le revêtement de canalisations ou de conduits

Publications (1)

Publication Number Publication Date
EP4452623A1 true EP4452623A1 (fr) 2024-10-30

Family

ID=84439987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22818677.1A Pending EP4452623A1 (fr) 2021-12-22 2022-11-17 Tube d'insertion pour le revêtement de canalisations ou de conduits

Country Status (5)

Country Link
US (1) US20250052355A1 (fr)
EP (1) EP4452623A1 (fr)
CN (1) CN118265603A (fr)
DE (2) DE102021134231B4 (fr)
WO (1) WO2023117228A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB627037A (en) * 1946-01-19 1949-07-26 American Cyanamid Co Improvements in or relating to expanded resinous compositions
DD133953A1 (de) 1977-09-07 1979-01-31 Hans Schlegel Verfahren zur polymerisation ungesaettigter polyesterharze
JP2736368B2 (ja) * 1990-04-10 1998-04-02 芦森工業株式会社 管路の内張り材及び管路の内張り方法
CN101790457A (zh) * 2007-08-30 2010-07-28 亚什兰许可和知识产权有限公司 具有高色牢度的低白化凝胶涂层
DE102011102135B3 (de) 2011-05-20 2012-08-30 Impreg Gmbh Einlegeschlauch zum Auskleiden und Sanieren von Rohrleitungen und Kanälen, insbesondere von Abwasserkanälen
DE102014118689A1 (de) * 2014-12-15 2016-06-16 Sml Verwaltungs Gmbh Auskleidungsschlauch zur Sanierung fluidführender Systeme
DE102016124729A1 (de) * 2016-12-16 2018-06-21 SML Verwaltungs- GmbH Härtbare Auskleidungsschläuche zur Sanierung fluidführender Systeme
CN207683066U (zh) * 2017-09-27 2018-08-03 天津科技大学 一种用于管道原位修复软管内封口的复合材料
DE102018111361A1 (de) * 2018-05-14 2019-11-14 Sml Verwaltungs Gmbh Auskleidungsschlauch für die Sanierung fluidführender Systeme
DE102018123339A1 (de) * 2018-09-21 2020-03-26 Saertex Multicom Gmbh Sanierung von Hochtemperaturleitungen

Also Published As

Publication number Publication date
CN118265603A (zh) 2024-06-28
DE102021134231A1 (de) 2023-06-22
DE102021134231B4 (de) 2025-06-18
US20250052355A1 (en) 2025-02-13
DE202022003037U1 (de) 2024-06-24
WO2023117228A1 (fr) 2023-06-29

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