WO1996029534A1 - Improvements relating to lining materials containing curable resins - Google Patents
Improvements relating to lining materials containing curable resins Download PDFInfo
- Publication number
- WO1996029534A1 WO1996029534A1 PCT/GB1996/000546 GB9600546W WO9629534A1 WO 1996029534 A1 WO1996029534 A1 WO 1996029534A1 GB 9600546 W GB9600546 W GB 9600546W WO 9629534 A1 WO9629534 A1 WO 9629534A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- length
- section
- resin
- curing
- cured
- Prior art date
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
- 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
- B29C63/343—Lining or sheathing of internal surfaces using tubular layers or sheathings the tubular sheathing having a deformed non-circular cross-section prior to introduction
-
- 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
Definitions
- This invention relates to lining materials containing curable resins, being materials in the form of tubular structures which are for use in connection with the lining of pipelines and passageways, especially underground sewers and the like.
- the present invention concerns mainly those lining tubes which include latent resin systems (although it can be applied where non-latent conventional and other resin systems are used) , and where a large length of the lining material forms a stock, and sections can be cut off therefrom for particular jobs.
- the layer of the tube which includes the resin is an extrudate of the resin mixed with reinforcing material such as fibres.
- the extrudate may be sandwiched between films or coatings in such lining tubes there is no layer which is "impregnated” with the resin but rather the resin mixture is a tactile mass which forms a curable layer.
- the lining tube When a lining structure is fabricated for a particular contract, the lining tube will be manufactured to the appropriate length, and is provided with appropriate end formations whereby the end of the lining bag is closed, to retain the resin therein, and is also provided with appropriate fastening devices to enable for example ropes to be connected thereto, whereby the lining material can be pulled into the pipeline or passageway to be lined, or, where it is everted into the pipeline or passageway, its progress can be controlled.
- the ends of the lining material are closed, and it is usual to provide special closure ends for the lining material.
- the present invention is concerned with providing closure ends in a simple and effective manner on lengths of cured in place lining materials which include synthetic resin, and which are taken from a stock of such material on an as needed basis.
- Another objective of the invention is to provide tubular lining lengths which have effective and simplified end formations.
- Yet a further objective is to provide sealed and latent cure resin layer linings which can be easily handled and used.
- a length of tubular lining material including curable resin is taken from a stock of such material by measuring the required length, and then by curing the resin over a section of the lining material joining that length to the remainder, whereby the length to be removed can be severed by severing through the cured portion, so that the cured material at the end of the length forms a closed end.
- the said section of material preferably it is cured in a size smaller than the overall width of the remainder of the material which is uncured, to ensure that the cured end can pass through the pipeline or passageway which is to be lined with the length of material.
- the section which is cured may be folded into horseshoe configuration before being cured.
- isolation means may be provided at the end of the cured section.
- Such isolation means may comprise devices to chill the resin at these ends, or clamps to isolate the remainder of the resin from the cured section.
- the resin which is utilized in the lining material preferably is of the latent type which requires the application of appropriate radiation or energy in order to cure same.
- the resin is one which will react in a curing sense to ultrasonic energy, and an ultrasonic generator is used to cure the section which will form the lining ends.
- a sxmple and effective method is therefore provided for the extraction of lengths of lining material from stock of such material. Obviously, the length which is removed from the stock will be of the appropriate length for the pipeline or passageway to be lined thereby.
- the curing can be effected by any means such as by heat or light radiation, but in any event it should be such as to effect only cure of the required section, as curing of the majority of the length which is removed has to be effected when the lining is placed inside the pipeline or passageway and is inflated to the surface thereof by fluid pressure.
- Fig. 1 is a view showing a stock of tubular lining material including curable resin and showing how the lining material is taken from the stock, and the step of curing a section of the material to define a length to be removed from the stock;
- Fig. 2 is an enlarged sectional elevation showing the nature of the layers of the particular lining material of Fig. 1;
- Fig. 3 is a sectional elevation showing how the cured portion is shaped into horseshoe configuration for curing.
- Fig. 4 shows how the length of impregnated material is removed from stock, and is provided with an aperture for the receipt of a rope or the like for pulling same or controlling the movement of same into a pipeline or passageway.
- a stock of tubular lining material including curable resin is indicated by reference numeral 10, and this material is stored in a warehouse or factory or the like ready for use when it is required to cut a length of the material from the stock for the lining of an underground pipeline or passageway.
- the material 10 is shown as comprising an inner plastic membrane 12, a layer of resin impregnated felt 14 which is integral with the layer 12, a second layer of the felt material 16 which is integral with an outer plastic film or coating 18.
- the felt materials are impregnated with the synthetic resin, which is of the latent type insofar as it will not cure until activated by some external means of a type hereinbefore referred to.
- the length 20 is fed out from the stock as shown in Fig. 1, and then a section 22 only is cured by the appropriate application of curing energy by a means 24.
- the means 24 in this case may typically be an ultrasonic generator, and the resin system is preferably such as to be curable by the application of ultrasonic energy.
- this section be folded into the horseshoe configuration shown at 26 in Fig. 3 so that the resulting cured section, which forms an end 28 on the length 20 of material which has been removed can pass into the pipeline or passageway which is to be lined.
- the section 22 can be severed through the middle by any suitable means such as a disc saw 32 to create the end 28 on the removed length 20 and the end 30 on the stock 10.
- the length of lining material is provided with a rigid closed end 28, which can be provided with an aperture 30 by means of a boring tool, to receive a rope which can be used for pulling or controlling the feed of the lining material into the pipeline or passageway.
- the leading end 30 of the length of lining material may have a previously formed cured, closed end formed by a process carried out in relation to the removal of the previous length of lining material from the stock.
- the section 22 it may be desirable to isolate the adjacent the lining material which are impregnated and which are not required to be cured at this time. This isolation may be effected by means of clamps 34, or by refrigeration isolation 34 or by any other suitable means.
- the length of lining material When the length of lining material is to be used for lining a pipeline or passageway, it can be either pulled into the pipeline or passageway, or can be everted into the pipeline or passageway, and in either case one or both of the precured end portions 28,30 may be removed. After curing the lining material in place on the pipeline or passageway, any remaining cured end portion will be removed by conventional means in order to complete the lining operation.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU48884/96A AU4888496A (en) | 1995-03-18 | 1996-02-19 | Improvements relating to lining materials containing curable resins |
EP96904981A EP0815379A1 (en) | 1995-03-18 | 1996-02-19 | Improvements relating to lining materials containing curable resins |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9505489.6 | 1995-03-18 | ||
GBGB9505489.6A GB9505489D0 (en) | 1995-03-18 | 1995-03-18 | Improvements relating to resin impregnated lining materials |
US08/509,648 US5634743A (en) | 1995-06-10 | 1995-07-31 | Lining of pipelines and passageways |
US08/509,648 | 1995-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996029534A1 true WO1996029534A1 (en) | 1996-09-26 |
Family
ID=26306704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1996/000546 WO1996029534A1 (en) | 1995-03-18 | 1996-02-19 | Improvements relating to lining materials containing curable resins |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0815379A1 (en) |
AU (1) | AU4888496A (en) |
WO (1) | WO1996029534A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0065886A1 (en) * | 1981-04-13 | 1982-12-01 | Jacques Laurent | Method of lining a passageway and tube for carrying it out |
EP0377486A2 (en) * | 1989-01-04 | 1990-07-11 | Subterra Limited | Lining pipes |
US5223204A (en) * | 1990-03-06 | 1993-06-29 | Get, Inc. | Method and apparatus for reversing a tubular bag |
WO1994023934A1 (en) * | 1993-04-14 | 1994-10-27 | Ina Acquisition Corp. | Production of lining tubes |
WO1995010006A1 (en) * | 1993-10-05 | 1995-04-13 | Angus Fire Armour Limited | Improvements in pipe lining |
WO1995020125A1 (en) * | 1994-01-21 | 1995-07-27 | Insituform Technologies Ltd. | Improvements relating to the lining of pipelines or passageways |
-
1996
- 1996-02-19 WO PCT/GB1996/000546 patent/WO1996029534A1/en not_active Application Discontinuation
- 1996-02-19 EP EP96904981A patent/EP0815379A1/en not_active Withdrawn
- 1996-02-19 AU AU48884/96A patent/AU4888496A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0065886A1 (en) * | 1981-04-13 | 1982-12-01 | Jacques Laurent | Method of lining a passageway and tube for carrying it out |
EP0377486A2 (en) * | 1989-01-04 | 1990-07-11 | Subterra Limited | Lining pipes |
US5223204A (en) * | 1990-03-06 | 1993-06-29 | Get, Inc. | Method and apparatus for reversing a tubular bag |
WO1994023934A1 (en) * | 1993-04-14 | 1994-10-27 | Ina Acquisition Corp. | Production of lining tubes |
WO1995010006A1 (en) * | 1993-10-05 | 1995-04-13 | Angus Fire Armour Limited | Improvements in pipe lining |
WO1995020125A1 (en) * | 1994-01-21 | 1995-07-27 | Insituform Technologies Ltd. | Improvements relating to the lining of pipelines or passageways |
Also Published As
Publication number | Publication date |
---|---|
AU4888496A (en) | 1996-10-08 |
EP0815379A1 (en) | 1998-01-07 |
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