CN101280872A - Tubular nonwoven compound material and manufacturing method thereof - Google Patents
Tubular nonwoven compound material and manufacturing method thereof Download PDFInfo
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- CN101280872A CN101280872A CNA2008100531876A CN200810053187A CN101280872A CN 101280872 A CN101280872 A CN 101280872A CN A2008100531876 A CNA2008100531876 A CN A2008100531876A CN 200810053187 A CN200810053187 A CN 200810053187A CN 101280872 A CN101280872 A CN 101280872A
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Abstract
The invention relates to a tube shaped composite material non-woven fabric and method of producing the same, the composite material is made by tubular opposite joint of non-woven fabric base fabric and coating layer on it in width direction, the composite material is used for non-digging repair of damaged pipeline burred in city, the invention is characterized in that the base fabric of the composite material is made by opposite joint stitch of 2 or more than 2 same no-woven fabric base fabric in width direction, and is stitched into tubular non-woven fabric base fabric, and integral thickness of the coating layer on the same is uniformly consistent. The production method includes techniques: 1 designing split joint block number of the non-woven fabric base fabric; 2 remaining joining edge on both sides of each non-woven fabric base fabric in width direction, and homogeneously coating resin on other place; 3 using joining edge to oppositely joint the non-woven fabric base fabric with designed block number into tubular shape; 4 executing complement resin process at joining place and uniforming the thickness of resin at joining place of plane opposite joint and coated resin at other place, thereby obtaining the tube shaped non-woven fabric composite material.
Description
Technical field
The present invention relates to a kind of composite material for weaving manufacturing technology, be specially a kind of city and bury tubular nonwoven compound material and the manufacture method thereof that ground damaged pipe non-excavation repairing technique uses, international Patent classificating number intends being Int.Cl.F16L 55/162 (2006.01).
Background technique
The various pipelines in ground are buried in the city 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 method for repairing and constructing operation 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 A that earlier filling is soaked with the tubular nonwoven compound material 1 of resinoid bond, adopt air pressure or hydraulic pressure method to carry out the lining that turns over of tubular nonwoven compound material 1 the other end B then, promote its mode and move forward propelling with " invertible head ", make tubular nonwoven compound material 1 be lining in the inside of damaged pipe 2 at last, realize reparation damaged pipe 2 with the form of " pipe-in-pipe ".Tubular nonwoven compound material 1 is that a kind of non-excavation turns over the composite material special that ground damaged pipe 2 is buried in lining technology reparation city.After tubular nonwoven compound material 1 was lining in damaged pipe 2, the medium in its coating layer 12 and the pipeline directly contacted, and medium is had impermeable and turns over seal action in the lining; Its base cloth layer 11 attaches with the inwall of damaged pipe 2, " pipe-in-pipe " structure (referring to Fig. 5) of formation, have with the tube wall bonding firmly, intensity and rigidity raising, characteristics such as corrosion resistance is good can make increase by 30～50 years the working life of pipeline.
When adopting trenchless technology to bury impaired pipe 2 roads, ground to turn over the lining construction, tubular nonwoven compound material 1 will become " blooming " state from the state of atrophy, and this just requires it can bear complicated stress and distortion.When present tubular nonwoven compound material 1 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 direction of this non-weaving cloth composite material is overlapped, promptly can be made into tubular nonwoven compound material 1.The described dual mode that is overlapped with: the one, sew up (for example, Japan Patent JP5833098 number); The 2nd, heat pressure adhesive (for example, No. 99216840.6, Chinese patent).The tubular nonwoven compound material of sewing up 1, for preventing seepage, its seam crossing C adopts overlap joint to sew up, thickness is 2 times of other parts, although the intensity of seam crossing C still can (in fact the stitching thread of seam crossing bear concentrated stress and turn over lining and the time rupture easily), because sewing needle not only will pierce through the non-weaving cloth 11 of softness when sewing up, but also to pierce through harder overlay film (resin) layer 12, cause difficulty of joining ratio, it is not high to sew up efficient, and seam crossing C can produce many sewing eyelet D simultaneously.These pinpricks D particularly turns over when construction lining, can the tension distortion and enlarge, leave the hidden danger (referring to Fig. 3) of seepage and the influence sealing, the requirement of mechanical property when also generally not reaching anti-ventilative, the anti-water permeability of composite material and turning over lining.The tubular nonwoven compound material 1 of heat pressure adhesive, the E of its lap-joint must be double-deck base cloth 11 and the coating layer 12, thickness also is 2 times of other parts, after the hot pressing, its thickness also far is thicker than other parts (referring to Fig. 4), and utilize the hot melt adhesive effect of overlap joint interface coating layer 12 and bonding one-tenth tubulose, the interlaminar strength of its multi-layer structure and joint strength can not be guaranteed, and ftracture easily when turning over the lining construction.The more important thing is; present tubular nonwoven compound material 1; no matter be the sort of docking calculation; all adopt the tubulose molding mode of a non-weaving cloth and a seam to make; when repairing the pipeline practical application; cause the lining construction plant that turns over of " invertible head " B of non-weaving cloth composite material 1 to move unstable through regular meeting; seam crossing produces bigger stress and concentrates; ftracture easily or be out of shape inhomogeneous; cause the sealing and the barrier performance of tubular nonwoven compound material 1 to descend; the effect that damaged pipe 2 liners are repaired descends, even makes the repairing construction failure.
Summary of the invention
At the deficiencies in the prior art, the technical problem to be solved in the present invention is to design a kind of tubular nonwoven compound material and manufacture method thereof.Characteristics such as this composite material has the geometrical construction of symmetry, and seam crossing is smooth, seals and good mechanical properties, and mechanical execution is easy when turning over lining, and the reparation pipeline is effective; It is simple that this method for composite material has technology, the efficient height, and constant product quality is convenient to characteristics such as industrial applications.
The technological scheme that the present invention solves described composite technology problem is: design a kind of tubular nonwoven compound material, it is by non-weaving cloth base cloth and coating layer thereon, through making for tubulose in the width direction butt joint, be used for the city and bury the non-trenchless rehabilitation of ground damaged pipe, the base cloth that it is characterized in that this composite material is sewed up in the butt joint of width direction plane by non-weaving cloth identical more than 2 or 2 and is formed, and sew up for the non-weaving cloth base cloth of tubulose and on coating layer integral thickness uniformity.
The technological scheme that the present invention solves described manufacture method technical problem is: design a kind of tubular nonwoven compound material manufacture method, this manufacture method is applicable to tubular nonwoven compound material of the present invention, and comprises following technology:
1. design the splicing block number of non-weaving cloth base cloth;
2. joining edge is left in the both sides on every non-weaving cloth base cloth width direction, and all the other locate even coated with resins;
3. utilize joining edge the synthetic tubulose of the non-weaving cloth base cloth plane butt joint of design block number;
4. sew up place's cotree fat and handle, and make the thickness of plane butt joint suture resin and the thickness uniformity of all the other place's coated with resins, can make described tubular nonwoven compound material.
Compared with prior art, composite material by adopting of the present invention is the design of identical non-weaving cloth base cloth more than 2 or 2, then the synthetic tubulose of their plane butt joints, sewing up place's polishing resin then, thereby the geometrical construction with symmetry, seam crossing is smooth, overall structure is good, consistency of thickness, sealing and good mechanical properties, mechanical execution is easy when turning over lining, there is not the stress concentrations situation, seam crossing is not easy to crack, is applicable to greatly directly through pipeline rehabilitation, repairs characteristics such as pipeline is respond well; It is simple that method for composite material of the present invention has technology, the manufacturing efficiency height, and constant product quality, with low cost, be suitable for making greatly directly through tubular nonwoven compound material, be convenient to characteristics such as industrial applications.
Description of drawings
Fig. 1 is a kind of embodiment's of tubular nonwoven compound material of the present invention overall structure schematic representation;
Fig. 2 is a kind of embodiment's of tubular nonwoven compound material of the present invention manufacturing approach craft process schematic representation;
Fig. 3 is that the overlap joint of a kind of tubular nonwoven compound material of prior art is sewed up structural representation;
Fig. 4 is the overlap joint heat pressure adhesive structural representation of the another kind of tubular nonwoven compound material of prior art;
Fig. 5 is the view behind the impaired pipeline of the non-trenchless rehabilitation of tubular nonwoven compound material;
Fig. 6 buries turning over of the impaired pipeline in ground for a kind of non-trenchless rehabilitation city and serves as a contrast the method for construction schematic representation.
Embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof.Embodiment does not limit claim of the present invention.
The tubular nonwoven compound material of invention design (is called for short composite material, referring to Fig. 1,2), it is by non-weaving cloth base cloth 11 and coating layer 12 thereon, through making for tubulose in the width direction butt joint, be used for the city and bury the non-trenchless rehabilitation of ground damaged pipe 2, the base cloth that it is characterized in that this composite material is sewed up in the butt joint of width direction plane by non-weaving cloth base cloth identical more than 2 or 2 (abbreviation base cloth) 11 and is formed, and sew up for the non-weaving cloth Ben Jibu 11 of tubulose and on coating layer 12 (being tubular composite material 1) integral thickness uniformity.
A base cloth of composite material of the present invention and prior art is different with the tubulose molding mode of a seam, but adopted the identical base cloth of 2 base cloths or 2 above polyliths and 2 seams or more than 2 the tubular composite material molding mode of many seams make.Described identical base cloth is meant that length, width and the quality of every block of non-weaving cloth is identical.Studies show that composite material of the present invention has the geometrical construction of circumferential symmetry, consistency of thickness, stressed even, in stable condition when turning over the lining construction, there is not the stress concentrations phenomenon, be not easy to produce cracking, help improving construction effect and efficient.Another benefit that adopts many seams tubulose composite material forming mode to design is that the identical tubular composite material of manufacturing diameter can adopt the narrower non-weaving cloth of relative fabric width; Adopt the identical non-weaving cloth of fabric width in other words, can make the bigger tubular composite material of relative diameter; In other words, the present invention is applicable to the manufacturing of the tubular composite material of big straight warp, and then is applicable to big straight reparation through pipeline.Understand easily, the fabric width of non-weaving cloth is narrow more, and the easy more control of the uniformity of cloth cover helps improving the quality of products more, relative manufacture cost is also just low more, helps reducing construction cost more and actually applies the non-trenchless rehabilitation new technology that the ground damaged pipe is buried in advanced city.
Non-weaving cloth base cloth 11 of the present invention should adopt powerful big, corrosion resistant chemical fibre manufacturing, and embodiment has adopted the needle fabric of middle long polyster fibre.As required, also can adopt the non-weaving cloth of the woven cloth reinforcement of high-strength terylene filament to make base cloth 11.The non-weaving cloth manufacturing technology of needle fabric and reinforcement itself all is a prior art.
The present invention has designed the manufacture method (abbreviation manufacture method) of described tubular nonwoven compound material simultaneously, and this manufacture method is applicable to tubular nonwoven compound material of the present invention, comprises following technology:
1. design the splicing block number of non-weaving cloth; The splicing block number of non-weaving cloth or quantity are according to the needs of tubular composite material diameter and thickness, in conjunction with the fabric width design of non-weaving cloth.The fabric width of every block of non-weaving cloth should be consistent or wide, preferably selects according to existing product, do not cut out the fabric width of non-weaving cloth as far as possible, to economize on resources, reduces cost.Described splicing block number is also unsuitable many, many can increase splicing operation burden, and reasonable is the 2-8 piece, it is desirable to the 3-6 piece.The wide non-weaving cloth more than 2 or 2 is made the geometrical construction that tubular nonwoven compound material 1 that base cloth 11 makes has circumferential symmetry, when turning over the lining construction, can realize the even distribution of its circumferential stress, mechanically deformation is stable, has avoided single seam crossing stress to concentrate and the mechanically deformation problem of unstable.
2. coated with resins; Coated with resins of the present invention will leave joining edge 13 on both sides or both sides on the every non-weaving cloth base cloth width direction earlier, and joining edge 13 places are coated with resins not, and all the other locate even coated with resins; The width H of described joining edge 13 is 20-40mmm.The resin embodiment of described coating adopts polyurethane, and painting method is a prior art.
3. the plane butt joint is sewed up; Utilize joining edge 13 design quantity or piece number to be coated with the synthetic tubular body of non-weaving cloth base cloth plane butt joint of resin; The butt joint of described plane is sewed up and is meant that the stitching that does not have overlap joint between two joining edges 13 or abut against overlappingly together connects.The embodiment of the invention has adopted overseam technology, and sewing thread is a polyester thread, by adjusting the tension force of sewing thread, can make suture smooth.In the butt joint of the plane of reality is sewed up, if there be laminating or being filled with of splicing, also should wipe out (robotic suturing device can be wiped out automatically), make the joining edge splicing surface smooth.Embodiment selects the crank arm type sewing machine for use, can realize the plane butt joint stitching that requires well.Because the butt joint of described plane is sewed up only at the base cloth 11 of softness, not have harder resin coating layer 12, so be applicable to the existing equipment that sews up, sew up the efficient height, can overcome fully and expend the man-hour that many seams bring, the while suture quality is good.
4. sewing up place's cotree fat handles; Carry out cotree fat at the plane of described tubular nonwoven joining edge 13 butt joint suture and handle, and make the thickness of plane butt joint suture resin and the thickness uniformity of all the other place's coated with resins, can make tubular nonwoven compound material of the present invention.Described cotree fat is handled can adopt coating processing technology.Coating processing technology is same as described coated with resins of the 2nd step.
The further feature of manufacture method of the present invention is that described cotree fat is handled the following method that adopts: preparation and the wide resin streak of described joining edge 13 double-widths (being 2H), and the thickness of resin streak and design in advance or formerly be coated in the consistency of thickness of the coating layer 12 on the base cloth 11.Described when sewing up place's cotree fat and handling, the plane that the direct hot pressing of described resin streak is bonded in described joining edge 13 is docked suture and is got final product.This " press strip " processing method efficient is higher, and better quality of product and appearance are arranged.
It is simple that method for composite material of the present invention has technology, the manufacturing efficiency height, and 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.
Make the tubular nonwoven compound material that diameter is 800mm.The splicing block number that designs this composite material base cloth is 4 (i.e. 4 seams), and the width of every non-weaving cloth base cloth is 628mm (referring to Fig. 1,2).The raw material of non-weaving cloth base cloth is long fine polyster fibre, Mean length 100mm, fineness 67dtex.The reinforcement cloth of base cloth is the polyester filament plain fabric, and warp, weft yarn fineness are respectively 100tex and 200tex, and warp, latitudinal density are 30/10cm.The resin that applies (film) layer is a polyurethane, molding pressure 0.8Mpa, and clamp time 3 seconds, coating layer Thickness Design are 0.3mm.During coating, joining edge is left in the both sides of base cloth, and width is 30mm.The synthetic tubular body of the plane butt joint that adopts the reinforcement non-weaving cloth after the three yarn closed seam method utilizes described joining edge 4 described coated with resins is sewed up in the plane butt joint of base cloth.Sewing thread adopts fineness 300dtex high-strength polyester line, and equipment is the crank arm type sewing machine.During sewing, sewing thread adopts than low-tension, makes the smooth splicing of suture.Splice the even coated with resins of suture then, and making the thickness of plane butt joint suture resin and the thickness uniformity of all the other place's coated with resins, can make composite material of the present invention.
Gained composite material outward appearance is even, and consistency of thickness does not splice vestige, and whole structure is good.
After embodiment's 1 described plane butt joint stitching is finished, adopt that ready made 60mm is wide, the resin streak of thickness 0.3mm, plane splicing place at described base cloth joining edge, the direct heat pressure adhesive of condition with 180 ℃ of temperature, molding pressure 0.8Mpa, after mending even coating layer, can make composite material of the present invention.Surplus with embodiment 1.
Gained composite material outward appearance is even, and consistency of thickness does not splice vestige, and whole structure is good.
Claims (6)
1. tubular nonwoven compound material, it is by non-weaving cloth base cloth and coating layer thereon, through being connected to tubulose at width direction and making, be used for the city and bury the non-trenchless rehabilitation of ground damaged pipe, the base cloth that it is characterized in that this composite material is sewed up by non-weaving cloth identical more than 2 or 2 plane butt joint on width direction and is formed, and sew up for the non-weaving cloth base cloth of tubulose and on coating layer integral thickness uniformity.
2. tubular nonwoven compound material according to claim 1 is characterized in that the piece number that the butt joint of described non-weaving cloth plane is sewed up is the 2-8 piece.
3. tubular nonwoven compound material according to claim 1 is characterized in that the piece number that the butt joint of described non-weaving cloth plane is sewed up is the 3-6 piece.
4. the manufacture method of the described tubular nonwoven compound material of claim 1, this manufacture method comprises following technology:
(1). the splicing block number of design non-weaving cloth base cloth;
(2). joining edge is left in the both sides on every non-weaving cloth base cloth width direction, and all the other locate even coated with resins;
(3). utilize joining edge the synthetic tubulose of the non-weaving cloth base cloth plane butt joint of design block number;
(4). sew up place's cotree fat and handle, and make the thickness of plane butt joint suture resin and the thickness uniformity of all the other place's coated with resins, can make described tubular nonwoven compound material.
5. according to the manufacture method of the described tubular nonwoven compound material of claim 4, it is characterized in that the following method of described cotree fat processing employing: preparation and the wide resin streak of described joining edge double-width in advance, and the thickness of resin streak and the consistency of thickness that formerly is coated in the coating layer on the base cloth, described sewing up when locating the processing of cotree fat, suture is docked on the plane that the direct hot pressing of described resin streak is bonded in described joining edge.
6. according to the manufacture method of claim 4 or 5 described tubular nonwoven compound materials, the width that it is characterized in that described joining edge is 20-40mmm; The butt joint of described plane is sewed up and is adopted overseam technology and crank arm type sewing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100531876A CN101280872B (en) | 2008-05-23 | 2008-05-23 | Tubular nonwoven compound material and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100531876A CN101280872B (en) | 2008-05-23 | 2008-05-23 | Tubular nonwoven compound material and manufacturing method thereof |
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| CN101280872A true CN101280872A (en) | 2008-10-08 |
| CN101280872B CN101280872B (en) | 2010-06-02 |
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| CN2008100531876A Expired - Fee Related CN101280872B (en) | 2008-05-23 | 2008-05-23 | Tubular nonwoven compound material and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207229A (en) * | 2011-03-28 | 2011-10-05 | 姚春贤 | Modular glass steel pipeline and method for repairing underground broken pipeline by using same |
| 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 |
| CN109210290A (en) * | 2018-09-27 | 2019-01-15 | 扬州市伟业消防器材有限公司 | A kind of improved fire hose |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283774Y (en) * | 1997-03-05 | 1998-06-10 | 曾立军 | Overturn lining flexible pipe for repair of pipe |
| CN2385207Y (en) * | 1999-07-13 | 2000-06-28 | 蔡志章 | Composite hose for repairing underground pipeline |
| EP1443257A1 (en) * | 2003-02-03 | 2004-08-04 | NordiTube Technologies AB | Lining material for pipelines |
| CN100537194C (en) * | 2003-11-07 | 2009-09-09 | 伊纳埃克威生公司 | Longitudinally reinforced cured in place liner |
-
2008
- 2008-05-23 CN CN2008100531876A patent/CN101280872B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207229A (en) * | 2011-03-28 | 2011-10-05 | 姚春贤 | Modular glass steel pipeline and method for repairing underground broken pipeline by using same |
| CN102207229B (en) * | 2011-03-28 | 2013-04-17 | 姚春贤 | Modular glass steel pipeline and method for repairing underground broken pipeline by using same |
| 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 |
| CN109210290A (en) * | 2018-09-27 | 2019-01-15 | 扬州市伟业消防器材有限公司 | A kind of improved fire hose |
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| Publication number | Publication date |
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| CN101280872B (en) | 2010-06-02 |
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