Polyethylene-wound structure wall tube and pipe without frame pipe and production method thereof

Abstract

The invention relates to a polyethylene-wound structure wall tube and pipe without a frame pipe, which is composed of an inner wall layer and an outer wall layer, wherein the inner wall layer is a continuous solid wall pipe formed by spirally winding a flaky polyethylene band, and adjacent band edges orderly being overlapped with each other; and the outer wall layer is composed of convex stiffening ribs formed by spirally winding a tubular polyethylene band on the external surface of the inner wall layer, and the tubular polyethylene band spirally presses across the overlap seam of each adjacent flaky polyethylene band edges. The production method comprises the following steps: extruding profiled bars, stretching, sizing, winding and fusing. The production method removes the original polypropylene frame pipe, can ensure the centroid distance of the stiffening rib tube, reduce the product weight by more than 20%, reduce raw material consumption, lower the product cost, greatly decrease the internal stress of the tube and pipe, reduce consumption and enhance ring stiff and ring flexibility.

Description

technical field [0001] The invention relates to the technical field of plastic pipes and their processing, in particular to a polyethylene-wrapped structure wall pipe without a skeleton pipe and a production method thereof. Background technique [0002] At present, in many fields such as sewer pipes and drainage engineering in cities, the use of plastic pipes with reinforcing ribs is increasing. There is no pressure inside the drain pipe. In order to improve the performance of resisting external pressure and impact, different forms of reinforcing ribs are set on the outer periphery of the pipe wall. There are two main types of commonly used plastic pipes with reinforcing ribs: one is made by direct extrusion molding, the most representative is double-wall corrugated pipe; the other is made by spiral winding, representing double-wall corrugated pipe. Wall pipes, polyethylene winding structural wall pipes and steel strip spirally wound corrugated pipes, etc. [0003] Among t...

AI Technical Summary

Problems solved by technology

However, due to the inclusion of polypropylene single-wall corrugated pipes, the current polyethylene wound structural wall pipes have the disadvantages of high raw material consumption, long winding time, heavy product and high cost

Images