Novel steel belt reinforced polyethylene spiral corrugated pipe and production process thereof

Abstract

The invention discloses a novel steel belt reinforced polyethylene spiral corrugated pipe. The novel steel belt reinforced polyethylene spiral corrugated pipe comprises a base pipe, a high-density polyethylene inner pipe, steel ribs and a high-density polyethylene material belt; the steel ribs include steel belts and resin layers, the steel belts are wrapped with the resin layers; the steel ribs are wrapped with the high-density polyethylene inner pipe; openings are formed in the two ends of the base pipe correspondingly, the high-density polyethylene inner pipe is spirally wound outside the base pipe and welded to the base pipe; and the high-density polyethylene material belt is spirally wound outside the base pipe, the base pipe and the high-density polyethylene inner pipe are covered with the high-density polyethylene material belt, and the high-density polyethylene material belt is welded to the base pipe and the high-density polyethylene inner pipe. The base pipe, the high-densitypolyethylene inner pipe and the high-density polyethylene material belt are manufactured by three extruders in a co-extrusion mode correspondingly, multiple cladding and welding are realized, the base pipe, the high-density polyethylene inner pipe and the steel ribs are bonded more closely, thus the steel belt reinforced polyethylene spiral corrugated pipe has sufficient compressive and impact strength and also has good flexibility, and the ring stiffness of the steel belt reinforced polyethylene spiral corrugated pipe is greatly improved.

Description

technical field [0001] The invention relates to a steel strip reinforced polyethylene spiral corrugated pipe, in particular to a novel steel strip reinforced polyethylene spiral corrugated pipe and its production process. Background technique [0002] Steel belt reinforced polyethylene spiral corrugated pipe refers to high-density polyethylene (DHPE) as the matrix, the steel belt coated with adhesive resin on the surface is formed into a corrugated form as the main support structure, and is wound and compounded with polyethylene material to form a whole. Wall spiral bellows. The product has strong compression resistance due to the winding steel belt, which improves the ring rigidity. Ethylene spiral corrugated pipe is safe and reliable in practical application, and has a long service life. It has become the new favorite in the field of buried drainage. It can be widely used in drainage, sewage and other municipal industries, and gradually replace traditional metal pipes, co...

AI Technical Summary

Problems solved by technology

Commonly used connection methods in the prior art include extrusion melt welding, clamp plus sealing tape connection, heat shrinkable sleeve (belt) connection, electric melting tape connection, socket connection with elastic sealing ring at the end of the straight pipe, etc., among which The disadvantage of extruding molten material welding is that it requires more labor and time-consuming construction; the disadvantage of clamp plus sealing tape connection is that the sealing reliability is low, and it is only suitable for rainwater pipes; the disadvantage of heat shrinkable sleeve (belt) connection is It is labor-intensive; the disadvantage of electric hot-melt belt connection is high cost, and usually needs to be extruded and welded again, which is inconvenient to use; the disadvantage of socket connection with elastic sealing ring at the straight pipe end is that the sealing ring is easy to Aging, relatively short service life

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