CN101613954A - A kind of lining material for repairing pipelines and manufacture method thereof - Google Patents
A kind of lining material for repairing pipelines and manufacture method thereof Download PDFInfo
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- CN101613954A CN101613954A CN200910069179A CN200910069179A CN101613954A CN 101613954 A CN101613954 A CN 101613954A CN 200910069179 A CN200910069179 A CN 200910069179A CN 200910069179 A CN200910069179 A CN 200910069179A CN 101613954 A CN101613954 A CN 101613954A
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Abstract
The present invention relates to a kind of lining material for repairing pipelines and manufacture method thereof.This inner lining material is made up of the coat on tubing base cloth and the outer surface thereof, it is characterized in that described tubing base cloth is one-time formed integral tubular woven fabric, and its warp thread is industrial non-twist or weak twist polyester filament, and number number is 800～1200tex; Weft yarn is the non-twist of industrial polyester filament and low elastic polyester filament or weak twist joint stock wire, and number number is 800～1200tex; Be 40～60/10cm through close with filling density; Described coat adopts polyester urethane resin, and each composition and quality proportioning thereof are: the polytetramethylene adipate diol: 1, and the 4-butanediol: the 4-phenyl isocyanate is 100: 5～10: 60～80.This manufacture method is applicable to inner lining material of the present invention, and adopts following technology: raw material → doubling → rewinding → weave → overlay film → product.
Description
Technical field
The present invention relates to a kind of lining material for repairing pipelines manufacturing technology, be specially inner lining material and manufacture method thereof that the underground damaged pipe non-excavation repairing technique in a kind of city uses.
Background technology
Ground is buried in the city or underground various pipeline often has the corrupted situation to take place.The conventional method of repairing this damaged pipe excavates the road surface exactly, repairs or the replacing damaged pipe, and then fills up the road surface.This restorative procedure working procedure is many, long in time limit, and the cost height destroys the road surface, obstruction, waste resource.It is a kind of new technology that the ground damaged pipe is buried in the city of repairing that non-excavation turns over the lining technology.This technology does not need the full-face tunneling road surface, has avoided traffic to be obstructed, environmental disruption, conventional method reparation such as waste resource etc. bury ground damaged pipe construction intrinsic problem.Described non-excavation turns over lining technology (referring to Fig. 6) and is meant the anti-local excavation place that is fixed on ground of turning over of an end (stiff end) A that earlier filling is soaked with the inner lining material (generally adopting tubulose woven fabric composite) 1 of resinoid bond, adopt then air pressure or hydraulic pressure method promote inner lining material 1 the other end (mobile terminal) B constantly turn over lining, make its mode move forward propelling with " invertible head ", be attached to damaged pipe 2 inwalls, make inner lining material 1 be lining in the inside of damaged pipe 2 at last, realize reparation damaged pipe 2 with the form of " tube-in-tube ".Inner lining material 1 is exactly a kind of special engineering material of underground damaged pipe 2 non-excavation repairing techniques.Inner lining material 1 comprises base cloth or base cloth layer 11 and the coat 12 on it.After inner lining material 1 was lining in damaged pipe 2, the medium in the coat 12 on it and the damaged pipe 2 directly contacted, and has impermeable and sealing function to medium; Its base cloth 11 attaches with the inwall of damaged pipe 2, and " tube-in-tube " structure of formation is (referring to Fig. 5 (a); Its flat deployable structure is shown in Fig. 5 (b)), have with tube wall bonding firmly, intensity and rigidity height, characteristics such as corrosion resistance is good can make increase by 30～50 years the service life of pipeline.
The existing patent documentation report of described lining material for repairing pipelines.The inner lining material 1 general tubular nonwoven compound material that adopts.When this tubular nonwoven compound material is made, be skeleton with the non-weaving cloth earlier, evenly coated with resins is prepared into plane non-weaving cloth composite material, then the width of this non-weaving cloth composite material is overlapped, make tubular nonwoven compound material.The described dual mode that is overlapped with: the one, sewing method (for example Japan Patent JP5833098 number, No. 5885674, United States Patent (USP), United States Patent (USP) 2008/0173396A1 document are reported); The 2nd, heat pressure adhesive method (for example No. 99216840.6 documents of Chinese patent are reported).The tubular nonwoven compound material of described sewing method preparation, for preventing seepage, its seam crossing 101 adopts overlap joint to sew up, the thickness that causes this place is 2 times of other parts, although the intensity of seam crossing 101 still can (in fact the suture of seam crossing bears concentrated stress, when turning over lining, rupture easily), but sewing needle not only will pierce through soft non-weaving cloth base cloth 11 during owing to stitching, but also to pierce through harder coating (resin) layer 12, cause difficulty of joining ratio, it is not high to sew up efficient, and seam crossing 101 can produce many sewing eyelets 102 simultaneously.These pinpricks 102 particularly turn over when construction lining, can the tension distortion and enlarge, leave the hidden danger (referring to Fig. 2) of seepage and the influence sealing, the requirement of mechanical property when also generally not reaching anti-ventilative, the anti-water permeability of composite and turning over lining.The tubular nonwoven compound material of described heat pressure adhesive method preparation, the thickness of its bonding connection place 103 is not only double-deck base cloth 11, also has double-deck coat 12, after the hot pressing, its thickness also far is thicker than other parts (referring to Fig. 3), and this method is to utilize the hot melt adhesive effect of coat 12 at overlap joint interface and bonding one-tenth tubulose, and the interlaminar strength of its sandwich construction and joint strength can not be guaranteed, also cracking easily when turning over the lining construction.In view of this, Chinese patent (No. 200810053187.6) improves the tubular nonwoven compound material of suture texture, the base cloth 11 of inner lining material is sewed up in the butt joint of width plane by non-weaving cloth identical more than 2 or 2 and is formed, and sew up for the non-weaving cloth base cloth 11 of tubulose and on coat 12 integral thickness uniformities, turn over lining seam crossing 101 (referring to Fig. 4) not easy to crack when constructing.But existing tubular nonwoven compound material; no matter adopt the sort of docking calculation; owing to all there is seam; globality is bad; when repairing the pipeline practical application; cause the lining construction machinery that turns over of non-weaving cloth composite material " invertible head " B to move unstable through regular meeting; seam or lap-joint can produce bigger stress and concentrate; ftracture easily or be out of shape inhomogeneous; cause the sealing and the barrier performance of tubular nonwoven compound material to reduce; the effect that damaged pipe 2 liners are repaired descends, even causes the repairing construction failure.
Described lining material for repairing pipelines 1 also has the report (for example No. 4686126 documents of United States Patent (USP) are reported) of mentioning the woven or knitted fabric composite of tubulose.But this technology mainly is aimed at the material of feedwater piping exploitation, emphasize that coat is the mixture of the styrene-ethylene-butylene-styrene resin of the polyvinyl resin of 60-40% and 40-60%, the requirement that emphasis is harmless to drinking water, and the structure of tubing itself and the applicability of gas piping are not addressed.
Described lining material for repairing pipelines 1 also has the report (for example No. 5535786 documents of United States Patent (USP) are reported) of tubular knitted composite.Tubular knitted composite earlier the tubular knitted pipeline of drawing in, is irritated antiseepage film and is gone up resin when construction, turns over lining and sends into pipeline.This recovery technique construction more complicated, and knitted fabric is powerful less with thickness, and therefore tubular knitted composite is eliminated substantially as the internal lining pipe pipe-repairing.
Obviously, when adopting trenchless technology to bury impaired pipe 2 roads, ground to turn over the lining construction, described inner lining material 1 will become " blooming " straight state from the state that atrophy is curled, bear powerful mechanicals efforts and complicated stress and distortion, therefore jointed tubing can not finely satisfy this requirement that the impaired pipe trenchless technology in ground turns over the lining construction of burying.
Summary of the invention
At the deficiencies in the prior art, the technical problem to be solved in the present invention is that a kind of lining material for repairing pipelines and manufacture method thereof are provided.This inner lining material is one-time formed tubulose woven fabric, does not have seam, good integrity, wall thickness uniformity, characteristics such as good mechanical properties turns over the construction of lining using time tool easily, and repairing effect is good; It is simple that this inner lining material manufacture method has technology, the efficient height, and constant product quality is convenient to characteristics such as industrial applications.
The technical scheme that the present invention solves described inner lining material technical problem is: design a kind of lining material for repairing pipelines, form by the coat on tubing base cloth and the outer surface thereof, it is characterized in that described tubing base cloth is one-time formed integral tubular woven fabric, the warp thread of tubulose woven fabric is industrial non-twist or weak twist polyester filament, and number number is 800～1200tex; Weft yarn is the non-twist of industrial polyester filament and low elastic polyester filament or weak twist joint stock wire, and number number is 800～1200tex; Be 40～60/10cm through close with filling density; Described coat adopts polyester urethane resin, and each composition and quality proportioning thereof are: the polytetramethylene adipate diol: 1, and the 4-butanediol: the 4-phenyl isocyanate is 100: 5～10: 60～80.
The technical scheme that the present invention solves described manufacture method technical problem is: the manufacture method that designs a kind of lining material for repairing pipelines, this manufacture method is applicable to lining material for repairing pipelines of the present invention, and the following technological process of employing: raw material → doubling → rewinding → weave → overlay film → product
The warp thread of described doubling technology and to close radical be 5～15, the twist is weak twists non-twist or 4～10 sth. made by twisting/rice; Weft yarn and to close radical be 5～15, the twist is weak twists non-twist or 4～10 sth. made by twisting/rice; The winding speed of warp thread and weft yarn is 50～200 meters/minute;
Described rewinding technology is all made the package form that circular loom is weaved the warp thread and the weft yarn of use that is suitable for to warp thread and weft yarn; Winding speed is 1800～3500r/min;
Described weaving process adopts the circular loom one-shot forming to be woven as the integral tubular woven fabric, the tubulose woven fabric be 40～60/10cm through close with filling density;
Described coating technique adopts the polyester urethane resin of described lining material for repairing pipelines to do coat, under the overlay film pressure of 145～200 ℃ overlay film temperature and 0.05～0.1Mpa, utilize coating equipment to described tubulose woven fabric coating overlay film, dry behind the overlay film, promptly make lining material for repairing pipelines of the present invention.
Compared with prior art, the base cloth of lining material for repairing pipelines of the present invention is the tubulose woven fabric, by weaving of circular loom, need not sew up or bonding, do not have seam, globality and sealing are good, and circumferential thickness is even, powerful high, stress equalization when turning over lining does not have stress concentrations, and mechanical execution is easy, repairing effect is good, is suitable for practice of construction and uses.The manufacturing approach craft of lining material for repairing pipelines of the present invention is simple, the production efficiency height, and constant product quality, with low cost, be convenient to industry and apply.
Description of drawings
Fig. 1 is the overall structure schematic diagram of a kind of embodiment of lining material for repairing pipelines of the present invention;
Fig. 2 is the stitching junction suture texture schematic diagram of a kind of tubular nonwoven compound material of prior art;
Fig. 3 is the overlap joint junction heat pressure adhesive structural representation of the another kind of tubular nonwoven compound material of prior art;
Fig. 4 is the improved stitching of the another kind of tubular nonwoven compound material junction suture texture schematic diagram of prior art;
Fig. 5 (a) is the view behind the impaired pipeline of the employing non-trenchless rehabilitation of lining material for repairing pipelines of the present invention;
Fig. 5 (b) is the flat deployable structure schematic diagram behind the impaired pipeline of the employing non-trenchless rehabilitation of lining material for repairing pipelines of the present invention;
When burying the impaired pipeline in ground for adopting the non-trenchless rehabilitation of lining material for repairing pipelines city, Fig. 6 turns over lining construction method schematic diagram.
The specific embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof.
The lining material for repairing pipelines 1 of the present invention's design is (hereinafter to be referred as inner lining material, referring to Fig. 1,5), form by the coat on tubing base cloth 11 and the outer surface thereof 12, it is characterized in that described tubing base cloth 11 is one-time formed integral tubular woven fabric, the warp thread of tubulose woven fabric is industrial non-twist or weak twist polyester filament, number number is 800～1200tex, and weft yarn is the non-twist of industrial polyester filament and low elastic polyester filament or weak twist joint stock wire, and number number is 800～1200tex; Thread count is 40～60/10cm; Described coat 12 adopts polyester urethane resin, and the quality proportioning of each composition is: the polytetramethylene adipate diol: 1, and the 4-butanediol: the 4-phenyl isocyanate is 100: 5～10: 60～80.
Polyurethane resin of the present invention adopts the synthetic preparation of one-step method, is about to the polytetramethylene adipate diol, 1 of described ratio, and 4-butanediol and 4-phenyl isocyanate are mixed simultaneously and got final product.Synthesis technique can be divided into manual metering, mixing and machinery metering, mix two kinds.During small lot batch manufacture, should adopt manual metering, mix, equipment, technology and operation require all simple, but the processing characteristics of polyurethane resin and mechanical property instability; Machinery metering, mixing are fit to produce in enormous quantities, and accurate measurement mixes, and the processing characteristics and the mechanical property of polyurethane film are more stable, but the equipment investment height, complicated operation.No matter be the synthetic polyurethane resin of manual method or mechanical means, all will be through metering, mixing, reaction, the granulation of raw material, at last to graininess melt polyurethane film extrusion (coat).
The present invention has designed the manufacture method (abbreviation manufacture method) of described inner lining material simultaneously, this manufacture method is applicable to inner lining material of the present invention, comprise following technological process: raw material → doubling → rewinding → weave → overlay film → product promptly makes described tubulose woven fabric inner lining material;
Described doubling process using routine and twisting machine, equipped warping is with bobbin cradle and warping tension control system, can realize that doubling is reeled one to go on foot and finish.Warp thread doubling technology and to close radical be 5～15, the twist is weak twists non-twist or 4～10 sth. made by twisting/rice; Weft yarn doubling technology and to close radical be 5～15, the twist is weak twists non-twist or 4～10 sth. made by twisting/rice; The winding speed of warp thread and weft yarn is 50～200 meters/minute.Doubling process using CGKV547 series and the twisting machine of embodiment, it can satisfy plurality of specifications first twist processing such as fishing lines, household line and Industry thread, is suitable for manufacture method of the present invention.
Described rewinding process using up-coiler changes package form through weft yarn for meeting the woven package form of circular loom.The rewinding process using FUBL01 type up-coiler of embodiment is made the little package that meets the woven φ 38 * 270mm of circular loom by φ 75 * 600mm large package of last process, make in other words meet the woven φ 38 * 270mm of circular loom through spool and pirn.The winding speed of rewinding technology is 1800-3500r/min.
Described weaving process adopts the circular loom one-shot forming to be woven as the integral tubular woven fabric.The weaving process of embodiment adopts SYZ-6-1000 series circular loom.Bore 100～the 1000mm of circular loom uses 4～8 shuttle weaved, 40～100 rev/mins of loom rotating speeds, and tubulose woven fabric thread count is 40～60/10cm.When weaving, described warp thread withdraws from from bobbin cradle, introduce both sides by loom, after annular dent is evenly separated, to pass heald and enter and weave the workspace, annular opening mechanism forms the circular passage weaving the workspace, 4～8 press production engineering specifications to shuttle moves in the circular passage, introduce described weft yarn, interweave, promptly be woven into the tubulose woven fabric of global formation at moulding ring place and warp thread.
Described coating technique adopts polyurethane resin of the present invention, under the overlay film pressure of 145～200 ℃ overlay film temperature and 0.05～0.1Mpa, utilize the coating equipment (laminating machine or coating machine) of prior art that described tubulose woven fabric is implemented the coating overlay film.Obviously, described coating technique also can adopt manual method to implement.Dry behind the overlay film, promptly make lining material for repairing pipelines of the present invention.
With the overlap joint of prior art or to be stitched into the tube side formula different, it is the integral tubular woven fabric that inner lining material of the present invention has adopted weaving of circular loom, geometry is well-balanced, the thickness uniformity, applying resin of the present invention through the coating machine direct mechanical again, promptly make described inner lining material---polyurethane resin applies integral tubular woven fabric lining material for repairing pipelines (or composite).Experimental study shows that inner lining material of the present invention has excellent sealing performance and mechanical property (referring to the comparative example), and mechanical execution is easy when turning over lining, there is not the stress concentrations situation, applicability is wide, and characteristics such as the pipeline repairing effect is good, efficient height are suitable for practice of construction and use.Inner lining material manufacture method of the present invention does not need special machine, small investment, and it is simple to have technology, the production efficiency height, constant product quality, with low cost, be convenient to characteristics such as industrial applications.
The present invention does not address part and is applicable to prior art.
Below provide specific embodiments of the invention.Embodiment only is to the specifying of the technology of the present invention content, and does not limit claim of the present invention.
The overlay film tubulose woven fabric inner lining material that to make a diameter be 145mm.
Manufacturing process flow is: raw material → doubling → rewinding → weave → overlay film → product.
(1) the warp thread raw material adopts industrial non-twist polyester filament, is 800tex through the yarn number number, and the weft yarn raw material adopts the non-twist joint stock wire of industrial polyester filament and low elastic polyester filament, and latitude yarn number number is 900tex;
(2) coat is a polyester urethane resin, and main component is a polytetramethylene adipate diol, 1,4-butanediol and 4-phenyl isocyanate, and three's mass ratio is 100: 7.6: 50.6;
(3) doubling technology: warp thread also closes 8 of radicals, and weft yarn also closes 9 of radicals, and is all non-twist through weft yarn, 100 meters/minute of winding speeds;
(4) rewinding technology: the coiling specification of warp, pirn is φ 38 * 270mm;
(5) weaving process: circular loom bore 200mm, 4 weave 60 rev/mins of loom rotating speeds to shuttle; The tubing thread count is 52/10cm;
(6) coating technique: 180 ℃ of overlay film temperature, overlay film pressure 0.06Mpa.
Products obtained therefrom is diameter 144mm, overlay film thickness 0.8mm, and outward appearance is even, consistency of thickness, the inner lining material 1 that globality is good.
The tubulose woven fabric composite that to make a diameter be 500mm.
Manufacturing process flow is: raw material → doubling → rewinding → weave → overlay film → product.
(1) the warp thread raw material is industrial non-twist polyester filament, is 900tex through the yarn number number; The weft yarn raw material is the weak twist joint stock wire of industrial polyester filament and low elastic polyester filament, and latitude yarn number number is 1000tex, and the weak twist twist is 5 sth. made by twisting/rice;
(2) coat is a polyester urethane resin, and main component is a polytetramethylene adipate diol, 1,4-butanediol and 4-phenyl isocyanate, and three's mass ratio is 100: 8.5: 80.1;
(3) doubling technology: warp thread also closes 9 of radicals, and weft yarn also closes 10 of radicals, 100 meters/minute of winding speeds;
(4) rewinding technology: with embodiment 1;
(5) weaving process: circular loom bore 500mm, 6 weave 60 rev/mins of loom rotating speeds to shuttle; The thread count of tubing is 50/10cm;
(6) coating technique: 190 ℃ of overlay film temperature, overlay film pressure 0.08Mpa;
Products obtained therefrom is diameter 501mm, overlay film thickness 1mm, and outward appearance is even, consistency of thickness, the inner lining material 1 that globality is good.
Embodiment 3
The tubulose woven fabric composite that to make a diameter be 800mm.
Manufacturing process flow is: raw material → doubling → rewinding → weave → overlay film → product.
(1) the warp thread raw material is industrial weak twist polyester filament, and the weak twist twist is 8 sth. made by twisting/rice, is 1100tex through the yarn number number, and the weft yarn raw material is the weak twist joint stock wire of industrial polyester filament and low elastic polyester filament, and the weak twist twist is 8 sth. made by twisting/rice, and latitude yarn number number is 1200tex;
(2) coat is a polyester urethane resin, and main component is a polytetramethylene adipate diol, 1,4-butanediol and 4-phenyl isocyanate, and three's mass ratio is 100: 9.0: 90.5;
(3) doubling technology: warp thread also closes 11 of radicals, and weft yarn also closes 12 of radicals, 100 meters/minute of winding speeds;
(4) rewinding technology: with embodiment 1;
(5) weaving process: circular loom bore 800mm, 8 weave 60 rev/mins of loom rotating speeds to shuttle; The tubing thread count is 45/10cm;
(6) coating technique: 200 ℃ of overlay film temperature, overlay film pressure 0.09Mpa;
Products obtained therefrom is diameter 798mm, overlay film thickness 1.1mm, and outward appearance is even, consistency of thickness, the inner lining material 1 that globality is good.
The comparative example
(fibrous raw material of preparation non-weaving cloth is the polyster fibre of 60mm to the tubular nonwoven compound material that the employing embodiment of the invention 2 prepared tubulose woven fabric inner lining materials and prior art are sewed up, and polyster fibre fineness 0.5dtex, fibre web quantitatively are 500g/m
2) carrying out the tensile property contrast, the thickness of two kinds of samples is 2.85mm, according to the GJB84-86 standard, adopts the INSTON3369 testing machine to compare test.Result of the test is listed in table 1.
The tensile property table of table 1 inner lining material
| Test event | Tubulose woven fabric inner lining material of the present invention | The prior art tubular nonwoven compound material |
| Warp-wise (vertically) ultimate strength (Mpa) | ??55.65 | ??3.85 |
| Broadwise (laterally) ultimate strength (Mpa) | ??40.96 | ??7.25 |
| Seam crossing transverse breakage brute force (Mpa) | ??- | ??6.33 |
Test shows, under the identical situation of tubing wall thickness, compare (and not considering under the intensity decreases conditions of problems of tubular nonwoven compound material at seam crossing) with the tubular nonwoven compound material of prior art sew, one-time formed tubulose woven fabric inner lining material of the present invention through broadwise brute force prior art products head and shoulders above all.
Claims (4)
1. lining material for repairing pipelines, form by the coat on tubing base cloth and the outer surface thereof, it is characterized in that described tubing base cloth is one-time formed integral tubular woven fabric, the warp thread of tubulose woven fabric is industrial non-twist or weak twist polyester filament, and number number is 800～1200tex; Weft yarn is the non-twist of industrial polyester filament and low elastic polyester filament or weak twist joint stock wire, and number number is 800～1200tex; Be 40～60/10cm through close with filling density; Described coat adopts polyester urethane resin, and each composition and quality proportioning thereof are: the polytetramethylene adipate diol: 1, and the 4-butanediol: the 4-phenyl isocyanate is 100: 5～10: 60～80.
2, lining material for repairing pipelines according to claim 1, the twist that it is characterized in that described weak twist is 4～10 sth. made by twisting/rice.
3, the manufacture method of a kind of claim 1 or 2 described lining material for repairing pipelines, this manufacture method adopts following technological process: raw material → doubling → rewinding → weave → overlay film → product,
The warp thread of described doubling technology and to close radical be 5～15, the twist is weak twists non-twist or 4～10 sth. made by twisting/rice; Weft yarn and to close radical be 5～15, the twist is weak twists non-twist or 4～10 sth. made by twisting/rice; The winding speed of warp thread and weft yarn is 50～200 meters/minute;
Described rewinding technology is all made the package form that circular loom is weaved the warp thread and the weft yarn of use that is suitable for to warp thread and weft yarn; Winding speed is 1800～3500r/min;
Described weaving process adopts the circular loom one-shot forming to be woven as the integral tubular woven fabric, the tubulose woven fabric be 40～60/10cm through close with filling density;
Described coating technique adopts the polyester urethane resin of described lining material for repairing pipelines to do coat, under the overlay film pressure of 145～200 ℃ overlay film temperature and 0.05～0.1Mpa, utilize coating equipment to described tubulose woven fabric coating overlay film, dry behind the overlay film, promptly make lining material for repairing pipelines of the present invention.
4, the manufacture method of lining material for repairing pipelines according to claim 3 is characterized in that described doubling process using CGKV547 series and twisting machine; Described rewinding process using FUBL01 type up-coiler; Described be suitable for circular loom weave the package form of the warp thread of use and weft yarn be ф 38 * 270mm through spool and pirn; Described weaving process adopts SYZ-6-1000 series circular loom, and bore is 100～1000mm, uses 4～8 shuttle, and the loom rotating speed is designed to 40～100 rev/mins.
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| CN200910069179A CN101613954A (en) | 2009-06-09 | 2009-06-09 | A kind of lining material for repairing pipelines and manufacture method thereof |
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| CN200910069179A CN101613954A (en) | 2009-06-09 | 2009-06-09 | A kind of lining material for repairing pipelines and manufacture method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275358A (en) * | 2011-06-21 | 2011-12-14 | 上海永利带业股份有限公司 | TPU (thermoplastic polyurethane elastomer) composite for pipe mending and preparation method thereof |
| CN102767028A (en) * | 2012-08-07 | 2012-11-07 | 哈尔滨工业大学 | Preparation method of high-strength fine-diameter ultra-thin tubular fabric |
| CN103597265A (en) * | 2011-04-18 | 2014-02-19 | 法伊夫有限责任公司 | Expandable liner for the protection and strengthening of existing pipes |
| CN103741340A (en) * | 2014-01-16 | 2014-04-23 | 上海永利带业股份有限公司 | High-strength trenchless pipeline repairing material and production method thereof |
| CN106381599A (en) * | 2016-08-30 | 2017-02-08 | 天津工业大学 | Pipeline repair tubular ramie/terylene weaving composite material |
| CN106498596A (en) * | 2016-11-18 | 2017-03-15 | 上海宾上纺织科技有限公司 | Stamp net blanket base cloth, its preparation method and stamp net blanket |
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2009
- 2009-06-09 CN CN200910069179A patent/CN101613954A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103597265A (en) * | 2011-04-18 | 2014-02-19 | 法伊夫有限责任公司 | Expandable liner for the protection and strengthening of existing pipes |
| CN102275358A (en) * | 2011-06-21 | 2011-12-14 | 上海永利带业股份有限公司 | TPU (thermoplastic polyurethane elastomer) composite for pipe mending and preparation method thereof |
| CN102767028A (en) * | 2012-08-07 | 2012-11-07 | 哈尔滨工业大学 | Preparation method of high-strength fine-diameter ultra-thin tubular fabric |
| CN102767028B (en) * | 2012-08-07 | 2013-12-25 | 哈尔滨工业大学 | Preparation method of high-strength fine-diameter ultra-thin tubular fabric |
| CN103741340A (en) * | 2014-01-16 | 2014-04-23 | 上海永利带业股份有限公司 | High-strength trenchless pipeline repairing material and production method thereof |
| CN106381599A (en) * | 2016-08-30 | 2017-02-08 | 天津工业大学 | Pipeline repair tubular ramie/terylene weaving composite material |
| CN106498596A (en) * | 2016-11-18 | 2017-03-15 | 上海宾上纺织科技有限公司 | Stamp net blanket base cloth, its preparation method and stamp net blanket |
| CN106498596B (en) * | 2016-11-18 | 2019-04-05 | 上海宾上纺织科技有限公司 | Stamp net blanket base cloth, preparation method and stamp net blanket |
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Application publication date: 20091230 |