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Lining material for repairing pipelines and manufacturing method thereof

A technology for pipeline repair and manufacturing methods, which is applied to chemical instruments and methods, pipe components, textiles and papermaking, etc. It can solve the problems of complex construction, unsatisfactory tubular fabrics, and small strength and thickness of knitted fabrics, etc., and achieves low cost. , It is convenient for industrial promotion and application, and the effect of stable product quality

Inactive Publication Date: 2009-12-30
BEIJING TIANHUAN GAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction of this repair technology is relatively complicated, and the strength and thickness of the knitted fabric are small, so the tubular knitted fabric composite material used as the inner liner to repair the pipeline has basically been eliminated.
[0006] Apparently, when trenchless technology is used to carry out the 2-way relining construction of buried damaged pipes, the lining material 1 will change from a shrunken and curled state to a "blossoming" straight state, and it will be subjected to strong mechanical action Force and complex stress and deformation, so the tubular fabric with seams cannot well meet the requirements of the trenchless lining construction of buried damaged pipes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Lining material for repairing pipelines and manufacturing method thereof
  • Lining material for repairing pipelines and manufacturing method thereof
  • Lining material for repairing pipelines and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Manufacture a film-coated tubular woven fabric lining material with a diameter of 145mm.

[0037] The manufacturing process flow is: raw materials → paralleling → rewinding → weaving → laminating → products.

[0038] (1) The warp yarn is made of industrial non-twisted polyester filament, the warp number is 800 tex, and the weft yarn is made of industrial polyester filament and polyester low-stretch non-twisted stranded yarn, and the weft number is 900 tex;

[0039] (2) The coating layer is polyester polyurethane resin, the main components are polytetramethylene adipate diol, 1,4-butanediol and 4-phenyl isocyanate, the mass ratio of the three is 100:7.6 : 50.6;

[0040] (3) Binding process: 8 combined warp yarns, 9 combined weft yarns, both warp and weft yarns are untwisted, and the winding speed is 100 m / min;

[0041] (4) Rewinding process: the winding specifications of the warp and weft bobbins are φ38×270mm;

[0042] (5) Weaving process: circular loom diameter 200mm, 4 sh...

Embodiment 2

[0046] Manufacture a tubular woven composite material with a diameter of 500mm.

[0047] The manufacturing process flow is: raw materials → paralleling → rewinding → weaving → laminating → products.

[0048] (1) The warp yarn material is industrial non-twisted polyester filament, the warp yarn number is 900tex; the weft yarn material is industrial polyester filament yarn and polyester low-stretch weakly twisted strand yarn, the weft yarn number is 1000tex, and the weak twist twist is 5 Twist / meter;

[0049] (2) The coating layer is polyester polyurethane resin, the main components are polytetramethylene adipate diol, 1,4-butanediol and 4-phenyl isocyanate, and the mass ratio of the three is 100:8.5: 80.1;

[0050] (3) Binding process: 9 combined warp yarns, 10 combined weft yarns, and a winding speed of 100 m / min;

[0051] (4) Rewinding process: same as Example 1;

[0052] (5) Weaving process: circular loom diameter 500mm, 6 shuttles weaving, loom rotation speed 60 rpm; the warp a...

Embodiment 3

[0056] A tubular woven composite material with a diameter of 800mm is manufactured.

[0057] The manufacturing process flow is: raw materials → paralleling → rewinding → weaving → laminating → products.

[0058] (1) The raw material of warp yarn is industrial weak-twist polyester filament, the weak-twist twist is 8 twists / meter, the warp number is 1100 tex, and the raw material of the weft yarn is the weakly twisted stranded yarn of industrial polyester filament and low-stretch polyester yarn. The twist is 8 twists / meter, and the number of weft yarns is 1200tex;

[0059] (2) The coating layer is polyester polyurethane resin, the main components are polytetramethylene adipate diol, 1,4-butanediol and 4-phenyl isocyanate, and the mass ratio of the three is 100:9.0: 90.5;

[0060] (3) Binding process: 11 combined warp yarns, 12 combined weft yarns, and a winding speed of 100 m / min;

[0061] (4) Rewinding process: same as Example 1;

[0062] (5) Weaving process: circular loom caliber ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a lining material for repairing pipelines and a manufacturing method thereof, the lining material comprises tubular textile base fabric and a coating layer on the outside surface of the base fabric. The lining material is characterized in that the tubular base fabric is an once forming integral tubular woven fabric, the warp yarn thereof is industrial zero twist or weak twist filament yarns with the number of 800-1200tex; the weft yarn thereof is zero twist or weak twist combined filament yarns of industrial polyester filament yarn (PFY) and polyester low stretch yarn, and the number of the combined weft yarn is 800-1200tex; the wrap density and the weft density are both 40-60 roots / 10cm; the coating layer adopts polyester polyurethane resin, comprising the following components by quality ratio: poly tetramethylene adipate diol: 1,4-butanediol: 4-phenyl isocyanate is 100:5-10: 60-80. The manufacturing method is applicable to the lining material of the invention and adopts the following processes: raw materials -> doubling -> rewinding -> weaving -> laminating -> products.

Description

Technical field [0001] The invention relates to a manufacturing technology of lining materials for pipeline repair, in particular to a lining material used in non-excavation repair technology of urban underground damaged pipelines and a manufacturing method thereof. Background technique [0002] Various pipelines buried in the city or underground are often damaged. The conventional method of repairing such damaged pipelines is to dig the road surface, repair or replace the damaged pipeline, and then fill the road surface. This repair method has many construction procedures, long construction period, high cost, damages the road surface, blocks traffic, and wastes resources. Trenchless lining technology is a new technology for repairing damaged buried pipelines in cities. This technology does not need to fully excavate the road, avoiding traffic obstruction, environmental damage, waste of resources and other conventional methods to repair the inherent problems inherent in the const...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06N3/14B32B27/12B32B27/40D03D3/02F16L55/162
Inventor 顾佐王瑞董久樟邓新华马崇启曹国权袁競张淑洁
Owner BEIJING TIANHUAN GAS
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