Double wall corrugated pipe

Abstract

The invention discloses a factory formula of a double wall corrugated pipe. The pipe wall of the corrugated pipe consists of internal and external layers. The external layer comprises the following components in parts by weight: 50-80 parts of HDPE high density polyvinyl resin, 15-30 parts of special enhancing master batch, 10-25 parts of special modifying master batch, 2-5 parts of moisture absorbing master batch and 1-3 parts of colour master batch. The internal layer comprises the following components in parts by weight: 50-80 parts of HDPE high density polyvinyl resin, 15-30 parts of metallocene linear low density polyethylene, 20-45 parts of special modifying master batch, 1-3 parts of moisture absorbing master batch and 1-3 parts of color master batch. The HDPE double wall corrugated pipe produced by the formula has high rigidity, other performance indexes can reach the standard and the formula cost is reduced greatly.

Description

technical field [0001] The invention relates to the field of engineering plastics processing and manufacturing, in particular to a production method formula for a double-wall corrugated pipe. Background technique [0002] At present, municipal sewage pipes include new types of pipes such as cement culvert pipes, double-wall corrugated pipes, and vacuum winding pipes. Cement pipes have been gradually replaced by plastic pipes. Related municipal sewage pipes generally use double-wall corrugated pipes in the current market. The enterprises of plastic pipes are increasing year by year, which makes the market competition very fierce. Many manufacturers ignore the product quality in order to compete for market share and reduce the sellers. In terms of the excellent performance of the original products, due to the lack of test verification, the pipes are brittle, ring stiffness and The ring compliance does not meet the standard requirements, resulting in related accidents such as p...

AI Technical Summary

Problems solved by technology

[0002] At present, municipal sewage pipes include new types of pipes such as cement culvert pipes, double-wall corrugated pipes, and vacuum winding pipes. Cement pipes have been gradually replaced by plastic pipes. Related municipal sewage pipes generally use double-wall corrugated pipes in the current market. The enterprises of plastic pipes are increasing year by year, which makes the market competition very fierce. Many manufacturers ignore the product quality in order to compete for market share and reduce the sellers. In terms of the excellent performance of the original products, due to the lack of test verification, the pipes are brittle, ring stiffness and The flexibility of the ring fails to meet the standard requirements, resulting in related accidents such as project rework and delays in the construction period, resulting in a serious waste of social resources