CA2146721A1 - Lining material - Google Patents
Lining materialInfo
- Publication number
- CA2146721A1 CA2146721A1 CA002146721A CA2146721A CA2146721A1 CA 2146721 A1 CA2146721 A1 CA 2146721A1 CA 002146721 A CA002146721 A CA 002146721A CA 2146721 A CA2146721 A CA 2146721A CA 2146721 A1 CA2146721 A1 CA 2146721A1
- Authority
- CA
- Canada
- Prior art keywords
- tube
- ground
- lining material
- fabric
- tufts
- 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
Abstract
Tne present invention provides;-a lining materlal comprising a flexible fabric tube which is a circularly knitted fabric comprising a ground and a plurallty of tufts of fabric projecting from the ground on the inside thereof, and a flexible sleeve within the tube, the flexible sleeve being substantially impervious to at least one of a gas and a liquld and being capable of being inflated in use to generally radially outwardly bear on the tube to force the tube in use into general conformity within an orifice.
Description
214~
~l~LE: L~NI~G ~ATERIA~
F~L~ OF ~HE ~ENTION
s ~hl~ invention relates to l~n~g of orlflces and materl~ls ~or use ~n so dolng~
B~CXG~OUND TO THE INYENTIO~
Plps ~h~ch is buried ~n the gro~nd ls llkely to deterlor~te ~oth from the lnslde and outslde ~hen fl~lds such as aqusous materials are carrled on the lnside and water snd/o~ solut~on.Q can flow over the outs~d~.
A~ove ground plpes can also deterlorat~ due ~o ~x~e~nsl ~1~67~ ~
~l~LE: L~NI~G ~ATERIA~
F~L~ OF ~HE ~ENTION
s ~hl~ invention relates to l~n~g of orlflces and materl~ls ~or use ~n so dolng~
B~CXG~OUND TO THE INYENTIO~
Plps ~h~ch is buried ~n the gro~nd ls llkely to deterlor~te ~oth from the lnslde and outslde ~hen fl~lds such as aqusous materials are carrled on the lnside and water snd/o~ solut~on.Q can flow over the outs~d~.
A~ove ground plpes can also deterlorat~ due ~o ~x~e~nsl ~1~67~ ~
actors an~ lnternal factors.
A typlcal example of the abo~e 18 se~er plplng and ln this case there is the addltlon~l hazard of ground ~ovement 5 whlch may crack or e~en crush the plpe. O~her examples lnclude petroleum plpQllnes and pneu~atlc transport cond~lts.
Wlthln Au&tralla and ln other countries, ~here are many kllometres of ~e~er plpe ~nlch has been lald in the ground ln e~cess of 20 years whlch 18 presently showlng considera~le deterloratlon.
Of oourse, it 1~ always poss$ble to d~ up roads and 8011 an~ replace the pipe complete~y bu~ to do so 18 qulte expen~lve.
ShQ present lnvention s~eks to provlde a llnlng materlal and a ~thod for llning pipe~ ~n ~ltu.
Whlle the presen~ lnve~tlon has a particular sppllcstlon to ~ewer p~pe~, there are many other plpe~ to whlch ~he presen~ lnvention can be applled.
Howev~r, the llning materl~l of the present lnvention 18 not re~tr~cted to l~nlng plpes n ~ltu a~d may be applled to llnlng orlflce~ of na~ural or man-made orlgin such as ca~it~Qs or bores ln pre-exl~ting substrate.
E~mples of ~uch oriflces lnclude holes drllled t~ro~g~
~oll or rock ~uch as under roads and naturally occurrlng w~ll~ or ~inks. Ot~er examples of such orlfl oe 8 lnclude cors holes, ~ell drllllng, and ln use ~h llnlng of condults of natural o~ man-~ads orlgln.
~ ~N.G~2 7 ~ ~
SU~MaRY 0~ S8E ~NYEN~IO~
The preQent ~n~entlon provldes:-a 11nlng ~aterlal comprislng a flexlble fabrlc tube whlcn 1~ a clrcularly knltted fabrlccomprl~ng a g~ound and a plurallty of tuft~ of fabrlc pro~ectlng from the ground on the lnside thereof, and 8 flexlble sleeve wlthln the tube, the flexlble ~leeve being su~stantial~y impervlous to at least one of a gas and a liqu~d and be$ng capable of belng l~flated ln use to generally radlally outwardly bear on the tube ~o force the tube ln u-~e lnto general oonformlty with an orlf~ce.
~he present lnvention also provldes:-20a method of llning an orlflce comprlslng taklng a flexible fabr~c tube ~ich 18 a clrcular~y knltted fabrlc co~prislng a ground and a pl~ral~ty of tufts of fabrlc pro~ectlng from the ground on the inslde ~hereof, locatlng a flexlble sleeve wlth~n the tube, t~e flexlble sleeve belng substantlally ~mper~ou~ to at least one o~ a ~as and a llquld, lmpregnat~ng at least a sub~tant~al proportlon of the tube snd at leact a ~ub~tantlal p~p~lon of the tufts ~lth a ~ttable resln or ~ettable cementatious ~terlal, locatlng the tube and t~e ~leeve ~lt~ln an orlflce tO be l~ned, ~lg672 t ~ 4 ~
lnfl~tlng the sleeve wlth a gas o~ a liquld to c~use the tube to clo~ely oo~form to the ~nterlor of the orlflce to ~ llned, and S allowlng t~e resln or cementatlou~ mar~rlal to set ~hereby to orm a llner for the or~flce.
PR~FERR8D ASPECTS T0 ~H~ I~VENTSo~
The u8e of a re~ln 1~ preerred over the use of oementatlo~s material.
The ln~entlon ls preferably appllea to the llnlng of pipe8.
The slee~e can be lo~ated ~lthin the tube elther before or after the l~pregnatlon of the .tube wlth the re~in although the ormer 18 preferred.
~he sleeve may be located ~lthln the tube before or after the locatlon of the tube w~thln ~he plpe.
~he ~leeve ls preferably for~med of a vlnyl or elastlc ~ater~al.
~ he tube ls preferably of 8 length to extend bet~een ad~ace~t ~anhole cover~ asso~ated w~th the plpe. That length ~ ly be up to 100 meters or more. ~he l~ngth of the ~leeve ~hould b~ approprlate ~o the length of the tube but some additlonal len~th may be des~rable to facllltate seallng one end of the sleeve and utlll~ng t~e other end for lnflat~on pu~poses.
~n add~tion to t~e ~leeve prevlously mentloned, ~ereinaft~r ~alled ~t~e 1r~t Yleeve~ the~e may be a second ~leeve located on the outslde of the tu~e.
The ~econd sleeve may be ltself ln~epQndent o~ t~e tube but may be a coating on ~he out~lde of th~ ~ube.
The flrs~ ~lee~ mlyht ~180 be a coatlng applled to the ln~l~ of the tube but thls i8 not preferre4.
That second ~leeve and th~ flrst slseve 8~e prefe~ably locate~ ~lth respect to the t~be beforQ the lmpregnat~on wlth the resln or cementations materlal ns the flrst sleeve ~nd the second sleeve can facilltate the appllcatlon of resin o~ cemen~at~o~ materlal. ~n sh~ last reBpect, rs~n or cementatious material ~ay be l~troduced ~ one end between the f~rst ~leeve and the ~eCOnd sleeve and th~n pushed to~ards the other end by a roller or preferably t~o rollers ~hlch nlp the llnln~ material.
~t i8 to be not~d that lt ls de~lrable that the seoond sleeve ~e tran~parent or at least tran~lucent as this ~111 ~nable a sl~htlng of ths extent ~o whlch the resln or ce~entatlou~ mater~al ha~ wet the tube. ~f there 18 in~ufficisnt w8tting, ~anlpulatlon may be done to spread the r~in or cementatious ~aterial.
The ~ethod of the prese~t lnventlon may be utlllsed to repair short lengths of pipe or relatlvely long lengths of P~
The res~n ~sy be any ~uitable materlal but so~e sult8ble ~aterlals lnclude polyureth~nes and epoxy resins.
~he res~n ls prefera~ly a co~d ~ettlng or ther~o-~ettlng resln and may be aided in settlng ~y the u~e o~ an approprlate catalyst or cross-llnklng materlal.
A ~ettlng accelerator 1~ preferably ~-~ed so as to reduoe set~lng tlme to a commerclally acceptable time.
35 ~h~ ~ube may be pr~-impregnated ~lth a ~rent of a s~t~nble resln ~lxture to ~lch another c~~ t may ~e ~ed At tlm8 of use.
~'~lrJ , .r Z,~-~NI~N~P,S
2~ 4~2~
The pre~ent ~nventlon also provldes a lln~ng materlal comprislng the above tube vlth the above sleeve locste~
ther~l thin .
In a preferred a~pect, the tube ~-q located bet~en a f ~rst sleeva and a second ~leeve.
The present ~nventlon also provlde8 an orlflce, partlcularly a plpe, ll~ed ~lth the abo~e tube.
A ~uitable materlal for the tube 1~ that sho~n ln A~strallan Patent Speclf~catlon ~o. 528797.
~he pore ~lzes sho~n thereln are partlcularly sultable for retentlon of res~n and p,~ ~e~ the ~ven ~i~tr~butlon of t~e re~ln ~nto the tufts by caplllary actlon.
In some ~nstances lt ~ay be des~rable that the tube 18 mad8 of ~ Hlgh Tenslle ~ater$al such as Xevlar or hlgh temperature fibre such as ~o~ex ~he dlameter o~ the tube and 31eeve s~ould be approprlate to sult the orifice, such a~ a p~ pe, which 18 to be llned.
~he tuft~ of the tube are preerab1y located on the ~nsl~e.
In one ~nseance, two or more ~uch tubeg were used; one lnsld~ the other and, ln the case of two tube~, prefera~ly with the tufts of the tubeQ ad~acent one another.
T~e ~uft lengt~ wlll generally b~ 3 ~ o~ greater. Tuft leng~s of 10 mm or more are partlcularly desirable.
~ ground thickness wlll gQnerally be O.25 mm or g~e~ter.
35 A ground thickness of 3 mm or great~r 1~ partlcularly pr~3er:ced.
2 i ~
Specif~c ~ ~o~entq in accord~nce Ylth thls lnvontlon wlll noY be deQcribed by w~y of non-llmlt~n~ e~amples.
DE~AII-I~ DE~ RIPTION OF SPEC~FlC E~BOD~rS
Ex~pLe 1 A lengt~ of tub~ng wag taken of abcut 100 meters lengt~ ~nd about 200 m~ 1~ dlameter.
~he tublng was a clrcular~y Xnltted tube comprislng a ground and havlng an internal plle surface.
More parSlcularly, the lnternal plle ~urface was of terry towel tuft~ and wa~ of the general type o materlal ~honn ln Austrsllan Patent Speciflcat~on ~o. 528797.
~lthln the tube wa~ a ~inyl liner slee~e of ~bout the same lnternal diameter as the tu~e and of a length about 1.5 meters longer than the length of t~e tube such that the sleev~ pro~ected from both ends of t~e tube.
~he resultlng composite product wa~ ~en passed through a bath contalning a thermo-settin~ ~e~ln wlth cat~lyQt and accelera~or and thereafter the r~s~n lmpregnated product ~as pas-~ed beSween nip roll~ so as ~o force the rey~n ~oug~ the tu~e and ~horoughly wet ~t.
~he ~et~ed composlte was then folaed along it~ length approxlmately lnto the shape of a U to reduce the apparen~
croæs-sectional slze and it waR passed into a plpe to ~e ltned.
The ~anner o passlng tt lnto the plpe to be lined is not m~rl~l but one method l~clud~s ~tt~ch~g ~ ropo to one end and ~ra~ng l t through the p~ pe .
~i4~7~1 ~he~ t~e wetted composlte vas properly locsted vl~hln ~ha plpe one end of the sleeve was closed, such as wlth ~
cl~mp, and thereafter ai~, s~eam or w~ter was passed un~er lov pressure lnto the other end of t~e sleeve 80 a8 ~0 S expand the sleeve and cause the ~etted c~m~8~te tO take up an ~pproxlmately cyllnd~lcal for~ and to press the tube ln~o intlmate contact wlth th~ pi-pe.
Air, steam or water p~essur~ ~as ma~ntalned for about ~n hour or untll the resln had set.
~he ~leeve wa6 thereater deflated and ~e~.o~ed. Thls ~ al 18 not essentlal Thereafter the ends of the t~e ~ere trlmmed as deslre~.
~sDle ~I
Example 1 was repeated except~ng that wlt~in the tube was a fl~t slee~e and on the outs$de of the tu~e ~as a second ~31e~vQ .
In thi~ lns~ance, ~he resin ~as introduced between the flrst fileeve and the second ~lee~e anB was mo~ed along the length of the tube between the sleeves by means of nlp ro118 .
The above methods a~d product~ ha~e ~een found to produce an excellent l~nlng to an orlflc~e, ~uch a.~ a pipe, which ~111 glve many yesrs of servlce.
~n particular, the tube is ~ong and seamless havlng no ~e~n ~oln~s and ls ess~ly ~et out. Further, ~he tube has ~ome stre~ch in lt both l~nglt~1nally and clrcu~erentlally. ~he circum~er~t$~1 stretc~ ls o p~t~cula~ value ~n com~ng $nbo con~or~lty of shape.
2 ~ 4 ~ 7 2 .L
_ 9 _ For ~ery large orlflces or very large plpe8, lt may ~e necessary to ~ake two or more ~uch t~be~, slit them long~tudlnally, and sew the~ toget~er longltud~nally to obtaln the requlred dl~eter.
s The clalms, lllustratlons, photographs and drswlngs form part of t~e dl~closure of thls speclflcatlon as does the descrlptlon, clalms, lllustrations~ photographs and Brawlngs of any asQociated prov~slonal or parent ~peclflc~tion or of any priorlty d~c~ent all of whlch are imported herelnto 8~ part of the ~eoo-~ thereof.
Flnally lt 18 to be u~derstood that varlou~ alteratlons, ~odl1Gstlons and~or addlt$ons ~ay be l~cG~o~ated into t~e 15 Yarlou5 ~on~t~uctlons ~nd arrangements or parts ~lthout departlng from ~e splrlt and ambit o th~ lnventlon.
L , 1~2,~ P9
A typlcal example of the abo~e 18 se~er plplng and ln this case there is the addltlon~l hazard of ground ~ovement 5 whlch may crack or e~en crush the plpe. O~her examples lnclude petroleum plpQllnes and pneu~atlc transport cond~lts.
Wlthln Au&tralla and ln other countries, ~here are many kllometres of ~e~er plpe ~nlch has been lald in the ground ln e~cess of 20 years whlch 18 presently showlng considera~le deterloratlon.
Of oourse, it 1~ always poss$ble to d~ up roads and 8011 an~ replace the pipe complete~y bu~ to do so 18 qulte expen~lve.
ShQ present lnvention s~eks to provlde a llnlng materlal and a ~thod for llning pipe~ ~n ~ltu.
Whlle the presen~ lnve~tlon has a particular sppllcstlon to ~ewer p~pe~, there are many other plpe~ to whlch ~he presen~ lnvention can be applled.
Howev~r, the llning materl~l of the present lnvention 18 not re~tr~cted to l~nlng plpes n ~ltu a~d may be applled to llnlng orlflce~ of na~ural or man-made orlgin such as ca~it~Qs or bores ln pre-exl~ting substrate.
E~mples of ~uch oriflces lnclude holes drllled t~ro~g~
~oll or rock ~uch as under roads and naturally occurrlng w~ll~ or ~inks. Ot~er examples of such orlfl oe 8 lnclude cors holes, ~ell drllllng, and ln use ~h llnlng of condults of natural o~ man-~ads orlgln.
~ ~N.G~2 7 ~ ~
SU~MaRY 0~ S8E ~NYEN~IO~
The preQent ~n~entlon provldes:-a 11nlng ~aterlal comprislng a flexlble fabrlc tube whlcn 1~ a clrcularly knltted fabrlccomprl~ng a g~ound and a plurallty of tuft~ of fabrlc pro~ectlng from the ground on the lnside thereof, and 8 flexlble sleeve wlthln the tube, the flexlble ~leeve being su~stantial~y impervlous to at least one of a gas and a liqu~d and be$ng capable of belng l~flated ln use to generally radlally outwardly bear on the tube ~o force the tube ln u-~e lnto general oonformlty with an orlf~ce.
~he present lnvention also provldes:-20a method of llning an orlflce comprlslng taklng a flexible fabr~c tube ~ich 18 a clrcular~y knltted fabrlc co~prislng a ground and a pl~ral~ty of tufts of fabrlc pro~ectlng from the ground on the inslde ~hereof, locatlng a flexlble sleeve wlth~n the tube, t~e flexlble sleeve belng substantlally ~mper~ou~ to at least one o~ a ~as and a llquld, lmpregnat~ng at least a sub~tant~al proportlon of the tube snd at leact a ~ub~tantlal p~p~lon of the tufts ~lth a ~ttable resln or ~ettable cementatious ~terlal, locatlng the tube and t~e ~leeve ~lt~ln an orlflce tO be l~ned, ~lg672 t ~ 4 ~
lnfl~tlng the sleeve wlth a gas o~ a liquld to c~use the tube to clo~ely oo~form to the ~nterlor of the orlflce to ~ llned, and S allowlng t~e resln or cementatlou~ mar~rlal to set ~hereby to orm a llner for the or~flce.
PR~FERR8D ASPECTS T0 ~H~ I~VENTSo~
The u8e of a re~ln 1~ preerred over the use of oementatlo~s material.
The ln~entlon ls preferably appllea to the llnlng of pipe8.
The slee~e can be lo~ated ~lthin the tube elther before or after the l~pregnatlon of the .tube wlth the re~in although the ormer 18 preferred.
~he sleeve may be located ~lthln the tube before or after the locatlon of the tube w~thln ~he plpe.
~he ~leeve ls preferably for~med of a vlnyl or elastlc ~ater~al.
~ he tube ls preferably of 8 length to extend bet~een ad~ace~t ~anhole cover~ asso~ated w~th the plpe. That length ~ ly be up to 100 meters or more. ~he l~ngth of the ~leeve ~hould b~ approprlate ~o the length of the tube but some additlonal len~th may be des~rable to facllltate seallng one end of the sleeve and utlll~ng t~e other end for lnflat~on pu~poses.
~n add~tion to t~e ~leeve prevlously mentloned, ~ereinaft~r ~alled ~t~e 1r~t Yleeve~ the~e may be a second ~leeve located on the outslde of the tu~e.
The ~econd sleeve may be ltself ln~epQndent o~ t~e tube but may be a coating on ~he out~lde of th~ ~ube.
The flrs~ ~lee~ mlyht ~180 be a coatlng applled to the ln~l~ of the tube but thls i8 not preferre4.
That second ~leeve and th~ flrst slseve 8~e prefe~ably locate~ ~lth respect to the t~be beforQ the lmpregnat~on wlth the resln or cementations materlal ns the flrst sleeve ~nd the second sleeve can facilltate the appllcatlon of resin o~ cemen~at~o~ materlal. ~n sh~ last reBpect, rs~n or cementatious material ~ay be l~troduced ~ one end between the f~rst ~leeve and the ~eCOnd sleeve and th~n pushed to~ards the other end by a roller or preferably t~o rollers ~hlch nlp the llnln~ material.
~t i8 to be not~d that lt ls de~lrable that the seoond sleeve ~e tran~parent or at least tran~lucent as this ~111 ~nable a sl~htlng of ths extent ~o whlch the resln or ce~entatlou~ mater~al ha~ wet the tube. ~f there 18 in~ufficisnt w8tting, ~anlpulatlon may be done to spread the r~in or cementatious ~aterial.
The ~ethod of the prese~t lnventlon may be utlllsed to repair short lengths of pipe or relatlvely long lengths of P~
The res~n ~sy be any ~uitable materlal but so~e sult8ble ~aterlals lnclude polyureth~nes and epoxy resins.
~he res~n ls prefera~ly a co~d ~ettlng or ther~o-~ettlng resln and may be aided in settlng ~y the u~e o~ an approprlate catalyst or cross-llnklng materlal.
A ~ettlng accelerator 1~ preferably ~-~ed so as to reduoe set~lng tlme to a commerclally acceptable time.
35 ~h~ ~ube may be pr~-impregnated ~lth a ~rent of a s~t~nble resln ~lxture to ~lch another c~~ t may ~e ~ed At tlm8 of use.
~'~lrJ , .r Z,~-~NI~N~P,S
2~ 4~2~
The pre~ent ~nventlon also provldes a lln~ng materlal comprislng the above tube vlth the above sleeve locste~
ther~l thin .
In a preferred a~pect, the tube ~-q located bet~en a f ~rst sleeva and a second ~leeve.
The present ~nventlon also provlde8 an orlflce, partlcularly a plpe, ll~ed ~lth the abo~e tube.
A ~uitable materlal for the tube 1~ that sho~n ln A~strallan Patent Speclf~catlon ~o. 528797.
~he pore ~lzes sho~n thereln are partlcularly sultable for retentlon of res~n and p,~ ~e~ the ~ven ~i~tr~butlon of t~e re~ln ~nto the tufts by caplllary actlon.
In some ~nstances lt ~ay be des~rable that the tube 18 mad8 of ~ Hlgh Tenslle ~ater$al such as Xevlar or hlgh temperature fibre such as ~o~ex ~he dlameter o~ the tube and 31eeve s~ould be approprlate to sult the orifice, such a~ a p~ pe, which 18 to be llned.
~he tuft~ of the tube are preerab1y located on the ~nsl~e.
In one ~nseance, two or more ~uch tubeg were used; one lnsld~ the other and, ln the case of two tube~, prefera~ly with the tufts of the tubeQ ad~acent one another.
T~e ~uft lengt~ wlll generally b~ 3 ~ o~ greater. Tuft leng~s of 10 mm or more are partlcularly desirable.
~ ground thickness wlll gQnerally be O.25 mm or g~e~ter.
35 A ground thickness of 3 mm or great~r 1~ partlcularly pr~3er:ced.
2 i ~
Specif~c ~ ~o~entq in accord~nce Ylth thls lnvontlon wlll noY be deQcribed by w~y of non-llmlt~n~ e~amples.
DE~AII-I~ DE~ RIPTION OF SPEC~FlC E~BOD~rS
Ex~pLe 1 A lengt~ of tub~ng wag taken of abcut 100 meters lengt~ ~nd about 200 m~ 1~ dlameter.
~he tublng was a clrcular~y Xnltted tube comprislng a ground and havlng an internal plle surface.
More parSlcularly, the lnternal plle ~urface was of terry towel tuft~ and wa~ of the general type o materlal ~honn ln Austrsllan Patent Speciflcat~on ~o. 528797.
~lthln the tube wa~ a ~inyl liner slee~e of ~bout the same lnternal diameter as the tu~e and of a length about 1.5 meters longer than the length of t~e tube such that the sleev~ pro~ected from both ends of t~e tube.
~he resultlng composite product wa~ ~en passed through a bath contalning a thermo-settin~ ~e~ln wlth cat~lyQt and accelera~or and thereafter the r~s~n lmpregnated product ~as pas-~ed beSween nip roll~ so as ~o force the rey~n ~oug~ the tu~e and ~horoughly wet ~t.
~he ~et~ed composlte was then folaed along it~ length approxlmately lnto the shape of a U to reduce the apparen~
croæs-sectional slze and it waR passed into a plpe to ~e ltned.
The ~anner o passlng tt lnto the plpe to be lined is not m~rl~l but one method l~clud~s ~tt~ch~g ~ ropo to one end and ~ra~ng l t through the p~ pe .
~i4~7~1 ~he~ t~e wetted composlte vas properly locsted vl~hln ~ha plpe one end of the sleeve was closed, such as wlth ~
cl~mp, and thereafter ai~, s~eam or w~ter was passed un~er lov pressure lnto the other end of t~e sleeve 80 a8 ~0 S expand the sleeve and cause the ~etted c~m~8~te tO take up an ~pproxlmately cyllnd~lcal for~ and to press the tube ln~o intlmate contact wlth th~ pi-pe.
Air, steam or water p~essur~ ~as ma~ntalned for about ~n hour or untll the resln had set.
~he ~leeve wa6 thereater deflated and ~e~.o~ed. Thls ~ al 18 not essentlal Thereafter the ends of the t~e ~ere trlmmed as deslre~.
~sDle ~I
Example 1 was repeated except~ng that wlt~in the tube was a fl~t slee~e and on the outs$de of the tu~e ~as a second ~31e~vQ .
In thi~ lns~ance, ~he resin ~as introduced between the flrst fileeve and the second ~lee~e anB was mo~ed along the length of the tube between the sleeves by means of nlp ro118 .
The above methods a~d product~ ha~e ~een found to produce an excellent l~nlng to an orlflc~e, ~uch a.~ a pipe, which ~111 glve many yesrs of servlce.
~n particular, the tube is ~ong and seamless havlng no ~e~n ~oln~s and ls ess~ly ~et out. Further, ~he tube has ~ome stre~ch in lt both l~nglt~1nally and clrcu~erentlally. ~he circum~er~t$~1 stretc~ ls o p~t~cula~ value ~n com~ng $nbo con~or~lty of shape.
2 ~ 4 ~ 7 2 .L
_ 9 _ For ~ery large orlflces or very large plpe8, lt may ~e necessary to ~ake two or more ~uch t~be~, slit them long~tudlnally, and sew the~ toget~er longltud~nally to obtaln the requlred dl~eter.
s The clalms, lllustratlons, photographs and drswlngs form part of t~e dl~closure of thls speclflcatlon as does the descrlptlon, clalms, lllustrations~ photographs and Brawlngs of any asQociated prov~slonal or parent ~peclflc~tion or of any priorlty d~c~ent all of whlch are imported herelnto 8~ part of the ~eoo-~ thereof.
Flnally lt 18 to be u~derstood that varlou~ alteratlons, ~odl1Gstlons and~or addlt$ons ~ay be l~cG~o~ated into t~e 15 Yarlou5 ~on~t~uctlons ~nd arrangements or parts ~lthout departlng from ~e splrlt and ambit o th~ lnventlon.
L , 1~2,~ P9
Claims (12)
1. A lining material comprising a flexible fabric tube which is a circularly knitted fabric comprising a ground and a plurality of tufts of fabric protecting from the ground on the inside thereof, and a flexible sleeve within the tube, the flexible sleeve being substantially impervious to at least one of a gas and a liquid and being capable of being inflated in use to generally radially outwardly bear on the tube to force the tube in use into general conformity with an orifice.
2, A lining material as claimed in Claim 1, wherein the tube is comprised of a yarn which is knit into stitches defining said ground and stitches defining said tufts which are loop pile tufts extending from the ground.
3. A lining material as claimed in claim 2, wherein the tufts extend from the ground to a height of not less than 3 mm.
4. A lining material as claimed in Claim 2, wherein the ground has a thickness of not less than 0.25 mm.
5. A lining material as claimed in claim 1, wherein, in addition to said flexible sleeve, hereinafter called "the first sleeve" there is a second flexible sleeve located over the outside of the tube.
6. A lining material as claimed in claim 5, wherein the second flexible sleeve is transparent or translucent to an extent that in use wetting of the tube by a settable resin can be observed.
7. A lining material as claimed in claim 1, wherein the tube is comprised of a High Tensile strength yarn.
8 A lining material as claimed in Claim 1, wherein the tube is pre-impregnated with a component of a settable resin mixture to which another component of said settable resin mixture may be added at time of use.
9. A method of lining an orifice comprising taking a flexible fabric tube which is a circularly knitted fabric comprising a ground and a plurality of tufts of fabric projecting from the ground on the inside thereof, locating a flexible sleeve within the tube, the flexible sleeve being substantially impervious to at least one of a gas and a liquid, impregnating at least a substantially proportion of the tube and at least a substantial proportion of the tufts with a settable resin or a settable cementatious material, locating the tube and the sleeve within an orifice to be lined, inflating the sleeve with a gas or a liquid to cause the tube to closely conform to the interior of the orifice to be lined, and .
allowing the resin or cementatious material to set - 12 _ whereby to form a liner for the orifice.
allowing the resin or cementatious material to set - 12 _ whereby to form a liner for the orifice.
10. In use in a method of lining an orifice.
a fabric tube which is a circularly knitted fabric having a plurality of tufts of fabric projecting from the tube on the inside thereof.
a fabric tube which is a circularly knitted fabric having a plurality of tufts of fabric projecting from the tube on the inside thereof.
11. A lining material or a method of lining substantially as hereinbefore described with reference to the specific embodiment.
12. The steps, features, compositions and compounds referred to or indicated in the specification and/or claims of this application, individually or collectively, and any and all combinations or any two or more of said step or features.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPM4991 | 1994-04-11 | ||
| AUPM4991A AUPM499194A0 (en) | 1994-04-11 | 1994-04-11 | Lining of piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2146721A1 true CA2146721A1 (en) | 1995-10-12 |
Family
ID=3779571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002146721A Abandoned CA2146721A1 (en) | 1994-04-11 | 1995-04-10 | Lining material |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5941285A (en) |
| EP (1) | EP0676579B1 (en) |
| AT (1) | ATE219563T1 (en) |
| AU (1) | AUPM499194A0 (en) |
| CA (1) | CA2146721A1 (en) |
| DE (1) | DE69527114T2 (en) |
| DK (1) | DK0676579T3 (en) |
| ES (1) | ES2181750T3 (en) |
| PT (1) | PT676579E (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9721405D0 (en) * | 1997-10-10 | 1997-12-10 | Texon Uk Ltd | Multi-layered renovative pipeliner |
| DE19810373C2 (en) * | 1998-03-10 | 2001-08-23 | Raedlinger Maschinen Und Anlag | Method of laying high pressure fluid lines |
| CN103260855B (en) * | 2010-12-20 | 2016-12-07 | 建筑研究和技术有限公司 | Pipe repairing method and repaired pipeline |
| US20140166148A1 (en) * | 2012-12-10 | 2014-06-19 | Buergofol GmbH | Multilayer Film |
| DE102015212025A1 (en) | 2015-06-29 | 2016-12-29 | Karl Otto Braun Gmbh & Co. Kg | Pipe liner material for use for at least two predefined pipe sizes |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4284507A (en) * | 1978-05-10 | 1981-08-18 | Beane Frank Thomas | Knit pile filter |
| US4322232A (en) * | 1979-05-09 | 1982-03-30 | Beane Filter Media, Inc. | Filter bag and method for suppressing electrostatic charges |
| JPS59194809A (en) * | 1983-04-18 | 1984-11-05 | Tokyo Gas Co Ltd | Lining material of pipe line having bent pipe |
| JPS61143128A (en) * | 1984-12-17 | 1986-06-30 | 芦森工業株式会社 | Inner lining material for duct |
| JPS61143129A (en) * | 1984-12-18 | 1986-06-30 | 芦森工業株式会社 | Inner lining material for duct |
| US4600615A (en) * | 1985-02-21 | 1986-07-15 | Ashimori Industry Co., Ltd. | Tubular lining material and a method and apparatus for manufacturing same |
| US4714095A (en) * | 1985-06-10 | 1987-12-22 | Hans Muller | Method of salvaging a pipe conduit buried under ground |
| GB2181670B (en) * | 1985-10-18 | 1989-09-13 | Ashimori Ind Co Ltd | Tubular lining material for pipelines |
| JPS63115734A (en) * | 1986-11-04 | 1988-05-20 | 東京瓦斯株式会社 | Lining material for duct |
| US4972880A (en) * | 1987-06-15 | 1990-11-27 | Insta-Pipe Research Limited Partnership | Pipe liner |
| JPH0692121B2 (en) * | 1987-10-05 | 1994-11-16 | 東京瓦斯株式会社 | Pipe liner and manufacturing method thereof |
| JPH02155719A (en) * | 1988-12-09 | 1990-06-14 | Mamiko Endou | Pipe lining material and pipeline repairing |
| US4976290A (en) * | 1989-06-12 | 1990-12-11 | Ozite Corporation | Tubular member having a liner |
| BE1003345A3 (en) * | 1990-01-25 | 1992-03-03 | Nordifa | Composite doubling material for the internal wall of a conduit, method forits manufacture and its use |
| US5535786A (en) * | 1990-04-06 | 1996-07-16 | Suomen Putkisaneeraus Oy | Method for repairing flow conduits, and repair material |
| FI88646C (en) * | 1990-04-06 | 1993-06-17 | Suomen Putkisaneeraus Oy | Procedures and materials for repair of flow ducts, such as pipes |
| JP2736368B2 (en) * | 1990-04-10 | 1998-04-02 | 芦森工業株式会社 | Pipe liner and pipe line lining method |
| US5334429A (en) * | 1991-06-24 | 1994-08-02 | Ashimori Industry Co., Ltd. | Lining material for pipe lines and a process for providing pipe lines therewith |
-
1994
- 1994-04-11 AU AUPM4991A patent/AUPM499194A0/en not_active Abandoned
-
1995
- 1995-04-10 CA CA002146721A patent/CA2146721A1/en not_active Abandoned
- 1995-04-11 ES ES95302404T patent/ES2181750T3/en not_active Expired - Lifetime
- 1995-04-11 AT AT95302404T patent/ATE219563T1/en not_active IP Right Cessation
- 1995-04-11 PT PT95302404T patent/PT676579E/en unknown
- 1995-04-11 DK DK95302404T patent/DK0676579T3/en active
- 1995-04-11 EP EP95302404A patent/EP0676579B1/en not_active Expired - Lifetime
- 1995-04-11 DE DE69527114T patent/DE69527114T2/en not_active Expired - Lifetime
- 1995-04-11 US US08/419,666 patent/US5941285A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| PT676579E (en) | 2002-10-31 |
| DE69527114T2 (en) | 2002-10-02 |
| US5941285A (en) | 1999-08-24 |
| EP0676579A3 (en) | 1996-07-24 |
| ATE219563T1 (en) | 2002-07-15 |
| AUPM499194A0 (en) | 1994-05-05 |
| EP0676579B1 (en) | 2002-06-19 |
| EP0676579A2 (en) | 1995-10-11 |
| DE69527114D1 (en) | 2002-07-25 |
| ES2181750T3 (en) | 2003-03-01 |
| DK0676579T3 (en) | 2002-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |