A double-wall corrugated pipe and its production process

Abstract

The invention relates to double-wall corrugated pipes. Each double-wall corrugated pipe comprises corrugated wall layers and lamination layers, wherein the lamination layers are fixedly molded with a corrugated wall layer mould; the two end holes of each of the double-wall corrugated pipes are flat end holes, namely the two end holes of each double-wall corrugated pipe are designed into flat end holes, and the flat end holes are connected by means of hot melting connection. The double-wall corrugated pipe has the benefits that after the plastic double-wall corrugated pipes with flat end holes are connected by means of hot melting, so that the aim of zero leakage is fulfilled, the air tightness of the connection is enhanced, and the defect that the service life is shortened because a rubber plastic package ring is not matched with the service life of the pipe is overcome; moreover, compared with the existing plastic double-wall corrugated pipe with a bell and spigot, the double-wall corrugated pipe is simple in process and high in production efficiency; because of increased wall thickness of the inner layers and the outer layers, the thickness of the lamination walls and the thickness of the flat end hole walls, the physical and mechanical properties are superior to that of the existing national standard high-density polyethylene (HDPE) double-wall corrugated pipes with the same specification, so that the defect that the waste is caused by the easiness for breakage of flaring in the processes of transporting and stacking can be overcome.

Description

technical field [0001] The invention relates to a double-wall corrugated pipe. Background technique [0002] At present, the existing plastic double-wall corrugated pipes with sockets are connected by rubber sealing rings, which cannot achieve the purpose of zero leakage. Moreover, the rubber sealing rings do not match the service life of the pipes, which reduces the service life of the pipes. In addition, the above-mentioned plastic sockets The flaring wall thickness of the double-wall corrugated pipe is only 3 to 6mm. The flaring of the pipe is easy to break during transportation, storage and installation. At the same time, each pipe is connected with a discarded flaring head, which causes waste. The flaring module avoids the air The size of the sizing sleeve is also large, the production process operation is time-consuming, the flaring and the cooling of the pipe are not synchronized, and the production efficiency needs to be improved. [0003] Therefore, developing a ne...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that the double-wall corrugated pipe in the related art cannot achieve zero penetration, has a low service life, is easily broken during transportation, storage and installation, and has low production efficiency, the present invention proposes a double-wall corrugated pipe with a plastic flat port hot-melt connection. tube, can solve the above problems

Images