Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fiber band reinforced thermoplastic pipe

A thermoplastic, reinforced tube technology, used in rigid tubes, hoses, pipes, etc., to solve problems such as overlapping tape leaks, in-plane and out-of-plane deformation

Inactive Publication Date: 2010-06-16
EI DU PONT DE NEMOURS & CO
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the design of this plastic tube can make full use of the strength of the reinforcing fibers, the disadvantage is that due to the relatively soft weft threads, this kind of unidirectional fabric is prone to in-plane and out-of-plane deformation, causing overlapping leaks between the straps during the winding process The phenomenon

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fiber band reinforced thermoplastic pipe
  • Fiber band reinforced thermoplastic pipe
  • Fiber band reinforced thermoplastic pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Will 3000-denier fibers (purchased from DuPont, USA) were twisted to 80 twists per meter in Z direction, and then three strands of the twisted fibers were plyed and twisted to 50 twists per meter in S direction. The twisted rope is marked as 3000x1x3. Then use the rope to weave a belt on the loom, with a width of 190 mm and a warp direction of 158 3000x1x3 twisted rope, weft is 600 denier polyester fiber with a density of 5 pcs / 10mm. The schematic diagram of the prepared unidirectional tape is shown in Figure 5 shown.

[0067] The obtained unidirectional reinforced tape is passed between two heating plates at a temperature of about 130° C. to shape the polyethylene fibers in the weft direction, and the shaped unidirectional reinforced tape is wound into a coil for use.

[0068] Extrude a high-density polyethylene inner tube at 150°C on an inner tube extruder (purchased from a single-screw plastic tube extruder from Crown Machinery, Germany) (the inner tube diam...

Embodiment 2

[0072] Will 3000-denier fibers (purchased from DuPont, USA) were twisted 80 twists per meter in the Z direction, and the twist coefficient was 1.5. Then three strands of the twisted fibers are plyed again to twist 50 twists per meter in S direction, and the twist coefficient in S direction is 1.65. The twisted rope is marked as 3000x1x3. Then use the rope to weave a belt on the loom, with a width of 95 mm and a warp direction of 79 3000x1x3 twisted rope with 600 denier polyethylene fibers at a density of 5 pcs / 10mm in the weft direction. The schematic diagram of the prepared unidirectional tape is shown in Figure 5 shown.

[0073] The obtained unidirectional reinforced tape is passed between two heating plates at a temperature of about 130° C. to shape the polyethylene fibers in the weft direction, and the shaped unidirectional reinforced tape is wound into a coil for use.

[0074]Extrude a high-density polyethylene inner tube at 150°C on an inner tube extruder (purc...

Embodiment 3

[0078] Will 3000-denier fiber (purchased from DuPont, USA) is twisted in Z direction with 90 twists per meter, and the twist coefficient is 1.5. Then three strands of the twisted fibers are plyed again to twist 30 twists per meter in S direction, and the twist coefficient in S direction is 1.65. The twisted rope is marked as 3000x1x3. Then use the rope to weave a belt on the loom, with a width of 125 mm and a warp direction of 85 3000x1x3 twisted rope, weft of 600 denier polyethylene fibers with a density of 7 threads / 10mm. The schematic diagram of the prepared unidirectional tape is shown in Figure 5 shown.

[0079] The obtained unidirectional reinforced tape is passed between two heating plates at a temperature of about 130° C. to shape the polyethylene fibers in the weft direction, and the shaped unidirectional reinforced tape is wound into a coil for use.

[0080] Extrude a high-density polyethylene inner tube at 150°C on an inner tube extruder (purchased from a ...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a thermoplastic reinforced pipe, which comprises a thermoplastic polymer internal pipe, a thermoplastic polymer external pipe, and a reinforcing textile between the thermoplastic polymer internal pipe and the thermoplastic polymer external pipe, wherein the reinforcing textile comprises a warp which is obtained by performing heat setting on a thermoplastic polymer weft and is woven unidirectionally, and the polymer warp is prepared from a twisted rope. The invention also discloses a method for manufacturing the thermoplastic reinforced pipe, which comprises the following steps of: a) providing the thermoplastic polymer internal pipe; b) twisting fibers for manufacturing the warp to have the twist multiplier of between 0.1 and 6.5 so as to obtain twisted fibers, stranding and performing back twisting on 2 to 20 strands of the twisted fibers to have the twist multiplier of between 0.1 and 6.5 so as to obtain the twisted rope; c) using the twisted rope as a warp thread and a single strand of a polymer yarn as a weft thread to weave the twisted rope into a unidirectional reinforcing textile on a loom, and then performing heat setting on the weft thread to prepare the reinforcing textile; d) enwinding the reinforcing textile on the polymer internal pipe at an included angle of 50 to 60 degrees; and e) coating the polymer external pipe through an external pipe extruder.

Description

technical field [0001] The present invention relates to a thermoplastic pipe reinforced with fiber tape, which has a high burst pressure and is especially suitable as a pipeline for transporting oil, gas or water. Background technique [0002] Steel pipes are widely used in liquid transportation, especially in the transportation industry of crude oil and natural gas, because steel pipes have high strength. The disadvantage of steel pipe is that it is bulky and not resistant to corrosion, which greatly affects its installation cost and service life. [0003] Thermoplastic pipe is used instead of steel pipe in some applications. Reinforced thermoplastic pipes, which weigh much less than steel pipes, are coilable, easy to transport, and easy to install, are gaining more and more attention. Commonly used thermoplastic pipes usually consist of an inner pipe, an outer pipe and a reinforcement layer, which is usually composed of fibers. [0004] The construction of thermoplastic...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/133
CPCF16L11/085
Inventor 黎学东张诚修
Owner EI DU PONT DE NEMOURS & CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com