CA2206639A1 - Process for producing a flexible tube for lining pipes, channels or the like - Google Patents
Process for producing a flexible tube for lining pipes, channels or the likeInfo
- Publication number
- CA2206639A1 CA2206639A1 CA002206639A CA2206639A CA2206639A1 CA 2206639 A1 CA2206639 A1 CA 2206639A1 CA 002206639 A CA002206639 A CA 002206639A CA 2206639 A CA2206639 A CA 2206639A CA 2206639 A1 CA2206639 A1 CA 2206639A1
- Authority
- CA
- Canada
- Prior art keywords
- web
- sheet
- glass fibre
- fibre
- hose
- 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.)
- Abandoned
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a process for producing a flexible tube for lining pipes, channels or the like, with an outer woven, layered or knitted glass-fibre web, a voluminous glass-fibre product mat and a covering inner woven, layered or knitted glass-fibre web, while the combined web thus formed is shaped into a flexible tube and the combined web edges are bonded together, in which the outer woven, layered or knitted glass-fibre web consists of a cut fibre mat which is bonded to the voluminous glass-fibre product, which consists of a needle felt, whereby the inner glass-fibre knitted web consists of a cut fibre mat bonded with a voluminous glass-fibre product in the form of a needle felt.
Description
, ' amended sheet Firma SAERTEX Wagener GmbH ~ Co. KG, Industriestr. 9, 48369 Saerbeck 'IProcess for production of a hose for inlininq ~ipe-lines, ducts or the like'l The invention relates to a process for production of a hose for inlining pipelines, ducts or the like as per the preamble of the main claim.
DE 38 19 657 C1 discloses a congeneric process wherein a felt mat formed from glass fibres is placed between woven or knitted sheets formed from glass fibre filaments, the felt mat is then joined to the woven or knitted sheets by knitting, and this combination sheet is formed into a hose. Here the woven or knitted sheets can be joined to the needlefelt sheet by lamination, and the sheet edges can be butt-jointed and joined together by sewing or joined together by felting.
DE 38 19 657 further discloses impregnating the resulting hose with synthetic resin and pulling it into the duct pipe to be repaired close to the inner surface of the pipe and then curing. The cured resin contributes appre-ciably to the strength of the hose. Since, however, the resin must not escape after impregnation and the impreg-nation is effected for example outside the duct and thehose is only pulled later into the pipe to be repaired, it has been attempted to increase the viscosity of the resin by adding appropriate thixotropicizers and/or thickeners.
However, this procedure has the considerable disadvantage that it appreciably slows down the rate of impregnation and leads to incomplete wetting of the individual fibres, in which connection it should further be borne in mind AMENDED SHEET
, 1~ .
DE 38 19 657 C1 discloses a congeneric process wherein a felt mat formed from glass fibres is placed between woven or knitted sheets formed from glass fibre filaments, the felt mat is then joined to the woven or knitted sheets by knitting, and this combination sheet is formed into a hose. Here the woven or knitted sheets can be joined to the needlefelt sheet by lamination, and the sheet edges can be butt-jointed and joined together by sewing or joined together by felting.
DE 38 19 657 further discloses impregnating the resulting hose with synthetic resin and pulling it into the duct pipe to be repaired close to the inner surface of the pipe and then curing. The cured resin contributes appre-ciably to the strength of the hose. Since, however, the resin must not escape after impregnation and the impreg-nation is effected for example outside the duct and thehose is only pulled later into the pipe to be repaired, it has been attempted to increase the viscosity of the resin by adding appropriate thixotropicizers and/or thickeners.
However, this procedure has the considerable disadvantage that it appreciably slows down the rate of impregnation and leads to incomplete wetting of the individual fibres, in which connection it should further be borne in mind AMENDED SHEET
, 1~ .
- 2 - amended sheet ., ~
that the thickener is not effective at once. If the resulting hose is then wound up or folded, the resin is squeezed out of the fold regions, and impregnation is non-uniform, viewed over the entire length of the hose.
What is more, the impregnating liquor is thickened, so that it lacks utility after a short time.
It is an object of this invention to provide a remedy here, and it is proposed that the hose be impregnated by using a resin of low viscosity, which disperses very readily within the entire sandwich structure, good dispersion being achieved within the needlefelt in particular. A pregelling of the outer layer, for example by means of W radiation, ensures the formation, on the outer layer, of a barrier layer, so that the resin cannot escape.
In relation to the later, final curing which takes place within a duct or pipe or the like, this layer ensures that complete curing will be achieved even in the regions which are in contact with the cold duct or pipe walls and which, in the prior art, cannot be adequately cured because of the heat loss.
According to a further proposal of the invention, a web is disposed on the inner surface of the resulting hose to create an additional barrier layer and hence, after curing, a resin-rich zone. This resin-rich, cured zone is particularly important for aggressive and abrasive media.
In addition, the low-viscosity resin expels the air from the entire combination mat, i.e. the sandwich structure, and the web layer deaerates very efficiently and thor-oughly in the process.
This arrangement of the invention ensures better wettingof the reinforcing material at lower pressures.
The inclusion of a web, which can also be adhered in AMENDED SHEET
I ~ .
that the thickener is not effective at once. If the resulting hose is then wound up or folded, the resin is squeezed out of the fold regions, and impregnation is non-uniform, viewed over the entire length of the hose.
What is more, the impregnating liquor is thickened, so that it lacks utility after a short time.
It is an object of this invention to provide a remedy here, and it is proposed that the hose be impregnated by using a resin of low viscosity, which disperses very readily within the entire sandwich structure, good dispersion being achieved within the needlefelt in particular. A pregelling of the outer layer, for example by means of W radiation, ensures the formation, on the outer layer, of a barrier layer, so that the resin cannot escape.
In relation to the later, final curing which takes place within a duct or pipe or the like, this layer ensures that complete curing will be achieved even in the regions which are in contact with the cold duct or pipe walls and which, in the prior art, cannot be adequately cured because of the heat loss.
According to a further proposal of the invention, a web is disposed on the inner surface of the resulting hose to create an additional barrier layer and hence, after curing, a resin-rich zone. This resin-rich, cured zone is particularly important for aggressive and abrasive media.
In addition, the low-viscosity resin expels the air from the entire combination mat, i.e. the sandwich structure, and the web layer deaerates very efficiently and thor-oughly in the process.
This arrangement of the invention ensures better wettingof the reinforcing material at lower pressures.
The inclusion of a web, which can also be adhered in AMENDED SHEET
I ~ .
- 3 - amended sheet place, has the inward effect that a faster performance of the work can talce place and a better venting of the rooms takes place.
During the creating of the sandwich structure, a film, preferably a film hose which has been laid flat, is placed into the interior of the structure to permit later calibration.
The use of the sandwich structure of the invention is of advantage in sewage ducts. The structure of this inven-tion is similarly useful for lining any possible pipesystems, for example pressure lines, industrial lines and microtunnels.
It is further pointed out that the sandwich product of the invention is further suitable for use as an inner pipe, in which case a monitoring space is created between the inner pipe and the outer pipe, said monitoring space being suitable for having appropriate measuring equipment connected to it to detect leakages from the inner pipe.
AMENDED SHEET
During the creating of the sandwich structure, a film, preferably a film hose which has been laid flat, is placed into the interior of the structure to permit later calibration.
The use of the sandwich structure of the invention is of advantage in sewage ducts. The structure of this inven-tion is similarly useful for lining any possible pipesystems, for example pressure lines, industrial lines and microtunnels.
It is further pointed out that the sandwich product of the invention is further suitable for use as an inner pipe, in which case a monitoring space is created between the inner pipe and the outer pipe, said monitoring space being suitable for having appropriate measuring equipment connected to it to detect leakages from the inner pipe.
AMENDED SHEET
Claims (6)
1. A process for production of a hose for inlining pipelines, ducts or the like, with an outer woven, laid or knitted sheet formed from glass fibre filaments, a lofty glass fibre product mat and a covering inner woven, laid or knitted sheet formed from glass fibre filaments, by forming the resulting combination sheet into a hose and joining the combination sheet edges together, characterized in that the finished hose is saturated with a low-viscosity resin and the outer layer is pregelled to prevent any escape of resin.
2. A process according to Claim 1, characterized in that the low-viscose resin is pregelled by UV
irradiation.
irradiation.
3. A process according to Claim 1, characterized in that a sheet of web composed of synthetic fibres is disposed on the inner surface of the combination sheet for the hose to be formed.
4. A process according to Claim 3, characterized in that the web is secured to the inwardly directed face of the inner glass fibre web, glass fibre lay or glass fibre knit sheet.
5. A process according to Claim 4, characterized in that the web is secured to the inwardly directed face of the inner glass fibre sheet by adhering.
6. A process according to Claim 4, characterized in that the web is needled to the inwardly directed face of the inner glass fibre sheet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4445605.0 | 1994-12-21 | ||
| DE4445605A DE4445605C1 (en) | 1994-12-21 | 1994-12-21 | Prodn. method for hose as inner cladding of pipe conduits, ducts etc. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2206639A1 true CA2206639A1 (en) | 1996-06-27 |
Family
ID=6536461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002206639A Abandoned CA2206639A1 (en) | 1994-12-21 | 1995-09-02 | Process for producing a flexible tube for lining pipes, channels or the like |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0799397B1 (en) |
| JP (1) | JPH11501262A (en) |
| AT (1) | ATE185411T1 (en) |
| AU (1) | AU3340895A (en) |
| CA (1) | CA2206639A1 (en) |
| DE (2) | DE4445605C1 (en) |
| DK (1) | DK0799397T3 (en) |
| WO (1) | WO1996019693A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7073536B2 (en) | 2000-02-02 | 2006-07-11 | Verline Inc | Apparatus, methods, and liners for repairing conduits |
| AU2001257229A1 (en) * | 2000-04-24 | 2001-11-07 | Ihc Rehabilitation Products | Method of forming repair material for conduit interface area and for repairing anon-linear conduit with a fiber repair material |
| DE10046140C1 (en) * | 2000-09-15 | 2002-03-07 | Albrecht Hille | Method of manufacturing a composite hose |
| FR2833275A1 (en) * | 2001-12-06 | 2003-06-13 | Saertex Wagener Gmbh & Co Kg | TEXTILE REINFORCEMENT |
| DE102004059883A1 (en) * | 2004-12-10 | 2006-06-14 | Brandenburger Patentverwertung Gbr (Vertretungsberechtigte Gesellschafter Herr Joachim Brandenburger | Production of a resin-impregnated fiber hose for the inner lining of ducts and pipelines |
| DE102006030802B4 (en) | 2006-06-30 | 2011-01-05 | Tracto-Technik Gmbh | Method and device for easy insertion of a long plastic pipe in a channel via a shaft |
| DE102009012613B4 (en) | 2009-03-11 | 2014-02-06 | Tracto-Technik Gmbh & Co. Kg | Method and device for introducing a pipe into a hole in the ground |
| DE102012004422A1 (en) | 2012-03-08 | 2013-09-12 | Brandenburger Patentverwertung GbR (vertretungsberechtigter Gesellschafter Joachim Brandenburger, 82467 Garmisch-Partenkirchen) | Novel resin-impregnated fiber hose for internal lining of ducts and pipelines |
| EP2827040A1 (en) | 2013-07-19 | 2015-01-21 | Per Aarsleff A/S | A reinforced liner for renovation of underground pipe systems, a method of producing a reinforced liner and a method of installing a reinforced liner into a pipe line |
| WO2018016273A1 (en) * | 2016-07-22 | 2018-01-25 | 住友ベークライト株式会社 | Method for manufacturing sandwich panel, sandwich panel, composite material sheet, and curved panel member |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3819657C1 (en) * | 1988-06-09 | 1989-07-20 | Saerbeck-Textil Wagener Kg, 4401 Saerbeck, De | |
| JPH0723240Y2 (en) * | 1988-09-16 | 1995-05-31 | 日本鋼管株式会社 | Tube used for pipe lined construction method |
| GB9005406D0 (en) * | 1990-03-10 | 1990-05-09 | Insituform Group Ltd | Improvements relating to the manufacture of tubular materials(tube without overlap) |
| DE4103980C1 (en) * | 1991-02-09 | 1992-06-11 | Saerbeck-Textil Wagener Gmbh & Co Kg, 4401 Saerbeck, De |
-
1994
- 1994-12-21 DE DE4445605A patent/DE4445605C1/en not_active Expired - Fee Related
-
1995
- 1995-09-02 EP EP95929760A patent/EP0799397B1/en not_active Expired - Lifetime
- 1995-09-02 DK DK95929760T patent/DK0799397T3/en active
- 1995-09-02 DE DE59507009T patent/DE59507009D1/en not_active Expired - Fee Related
- 1995-09-02 CA CA002206639A patent/CA2206639A1/en not_active Abandoned
- 1995-09-02 AT AT95929760T patent/ATE185411T1/en not_active IP Right Cessation
- 1995-09-02 AU AU33408/95A patent/AU3340895A/en not_active Abandoned
- 1995-09-02 WO PCT/DE1995/001208 patent/WO1996019693A1/en active IP Right Grant
- 1995-09-02 JP JP8519397A patent/JPH11501262A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE59507009D1 (en) | 1999-11-11 |
| AU3340895A (en) | 1996-07-10 |
| DE4445605C1 (en) | 1996-03-07 |
| EP0799397A1 (en) | 1997-10-08 |
| EP0799397B1 (en) | 1999-10-06 |
| WO1996019693A1 (en) | 1996-06-27 |
| DK0799397T3 (en) | 2000-04-03 |
| ATE185411T1 (en) | 1999-10-15 |
| JPH11501262A (en) | 1999-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDC | Discontinued application reinstated | ||
| FZDE | Discontinued |