Glass fiber reinforced polyethylene hollow-wall winding pipe and manufacturing method thereof

Abstract

A glass fiber reinforced polyethylene hollow-wall winding pipe is formed by spirally winding rectangular hollow polyethylene plastic pipes, welding the plastic pipes through a hot melt adhesive and synchronously winding at least one PP (Propene Polymer) / PE (Polyethylene) coated composite long glass fiber bundle, and the PP / PE coated composite long glass fiber bundle and the hot melt adhesive are bonded between two adjacent rectangular hollow polyethylene plastic pipes. Compared with pipes in the same specification and type as the pipe produced in the invention, the weight per meter is reduced by 20-30 percent, so that the manufacturing cost is greatly reduced. The production method provided by the invention enables glass fibers to be better embedded in the polyethylene pipe, is more suitable for producing large-caliber high-ring-stiffness plastic ducts (DN is 1500 and more and SN can be more than 16KN / m<2>), can produce pipes which have the specification of higher ring stiffness and are suitable for being used in environments such as runways, train tracks and the like, demanding more on the pipes, and enriches the production method for high-ring-stiffness plastic pipes.

Description

technical field [0001] The invention relates to a pipe material, in particular to a glass fiber reinforced hollow-walled polyethylene winding pipe and a manufacturing method thereof. Background technique [0002] Traditional drainage pipes are mainly made of cement pipes and clay pipes, which generally have the characteristics of high energy consumption and easy environmental pollution. At the same time, there are also the following disadvantages: ①The service life is short, generally 5-10 years; ②Chemical and corrosion resistance Poor performance; ③ poor hydraulic performance; ④ high construction cost and long period; ⑤ poor pipeline integrity, easy to leak, etc. Since the mid-20th century, countries around the world, especially developed countries, have been developing special materials for plastic pipes and the development of plastic pipe production processes. [0003] The buried plastic drainage pipe system has a smooth inner wall and light weight, and the interface ado...

AI Technical Summary

Problems solved by technology

[0002] Traditional drainage pipes are mainly made of cement pipes and clay pipes, which generally have the characteristics of high energy consumption and easy environmental pollution. At the same time, there are also the following disadvantages: ①The service life is short, generally 5-10 years; ②Chemical and corrosion resistance Poor performance; ③ poor hydraulic performance; ④ high construction cost and long period; ⑤ poor pipeline integrity, easy to leak, etc.

When the diameter of the pipe increases, the problem of reducing the rigidity of the pipe ring cannot be completely solved by simply increasing the weight of the pipe

On the one hand, the increase in pipe weight has brought more inconvenience to construction, and more importantly, it has greatly increased the production cost of pipes, which has also become a problem that restricts many manufacturers from producing large-diameter pipes

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