PE double-wall corrugated pipe and machining equipment

Abstract

The invention discloses a PE double-wall corrugated pipe. The PE double-wall corrugated pipe comprises a corrugated pipe body; a flexible reinforcing layer is arranged at a mould-closing seam on the outer side of the outer wall of the corrugated pipe body and embedded into the outer wall of the corrugated pipe body, and the flexible reinforcing layer and the outer wall of the corrugated pipe bodyare formed integrally; and the flexible reinforcing layer has the formula of materials of, by weight, 80%-85% of PE100 pipe raw materials, 10%-15% of EVA resin and 3%-5% of color masterbatch. The invention further discloses machining equipment of the corrugated pipe. The machining equipment comprises a plastic extrusion machine and a forming module and further comprises a flexible reinforcing layer extrusion machine and a flexible reinforcing layer mould. According to the PE double-wall corrugated pipe, the flexible reinforcing layer is arranged at the mould-closing seam on the outer side of the outer wall of the corrugated pipe, and the flexible reinforcing layer and the outer wall are bonded into a whole, so that on the one hand, the wall thickness of the position is increased and the strength of the position is improved, and on the other hand, the ring flexibility performance of the mould-closing seam of the pipe is improved.

Description

technical field [0001] The invention relates to the field of pipe processing, in particular to a PE double-wall corrugated pipe and processing equipment thereof. Background technique [0002] PE double-wall corrugated pipe is a kind of plastic structural wall pipe with polyethylene as raw material, processed by extrusion and special molding process, with smooth inner wall and closed corrugated outer wall. [0003] see figure 1 , figure 2 , the existing production and manufacture of PE double-wall corrugated pipe is plasticized and extruded by a plastic extruder, and then formed into a double-wall corrugated pipe through a set of cyclically moving forming modules. When the PE corrugated pipe is formed, the upper and lower modules are molded together to form a circular cavity, and the pipe blank is blown into shape. [0004] see image 3 , Figure 4 , at the clamping seam position of the upper and lower modules, it is easy to form stress concentration. After the pipe is ...

AI Technical Summary

Problems solved by technology

[0007] As mentioned above, due to the molding equipment and process of the existing PE double-wall corrugated pipes, there will be performance differences between the pipes at the position of the mold joint, which will have an adverse effect on the appearance of the pipes and the ring flexibility index.

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