Production process for improving weather resistance of PE solid-wall pipe

Abstract

The invention relates to a production process for improving the weather resistance of a PE solid-wall pipe. The production process comprises the following steps: early-stage preparation, material preparation and material feeding, extrusion molding, sizing sleeve cooling, spray cooling molding, tractor traction, finished product cutting and qualified inspection, wherein material preparation and material feeding include the specific steps: preparing a specific pipe material of the PE solid-wall pipe and a protective layer material, sucking the materials into a material hopper through a material suction device, discharging materials separately from the material hopper into charging barrels of two extruders which are connected with double-layer co-extrusion heads through head connectors, and performing co-extrusion through the double-layer co-extrusion heads. The production process for improving the weather resistance of the PE solid-wall pipe, the process is simple, the production efficiency is high, the wall thickness of the produced PE solid-wall pipe is uniform, and the die spotting effect of the PE solid-wall pipe with the protective layer is better; and no parting lines are needed, good weather resistance is achieved, and a long service life and broad application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of PE pipe production, in particular to a production process for improving the weather resistance of PE solid-wall pipes. Background technique [0002] PE solid wall pipe is widely used in drainage and sewage, industrial fluid transportation, chemical industry and non-excavation old pipeline reconstruction projects and other fields. It brings great convenience to our life. [0003] Due to the application field of PE solid-wall pipes, PE solid-wall pipes need to withstand the test of climate, such as comprehensive damage caused by light, cold and heat, wind and rain, bacteria, etc., and the surface will inevitably be damaged during laying and use. Therefore, , which requires PE solid wall pipe to have excellent weather resistance. In the prior art, the weather resistance of ordinary PE solid-wall pipes cannot meet the above requirements. [0004] The production process of PE solid wall in the prior art is ...

AI Technical Summary

Problems solved by technology

These two methods mainly have the following disadvantages: (1) low production efficiency; (2) uneven wall thickness of pipes; (3) poor weather resistance of PE solid wall; (4) mold closing effect of protective layer and PE solid wall pipe Poor, with parting line

[0005] The Chinese patent application number is CN201710573753.5, which discloses a PE pipe production process. PE resin powder, color masterbatch, clay nanocomposite material, flame retardant, nano calcium carbonate, dispersant, antistatic agent, coupling agent, The low-temperature resistant plasticizer and antioxidant are put into the dry mixer to dry and stir to form the pipe material, which is to make the PE pipe have good antistatic and flame retardancy, without improving the weather resistance

[0006] The Chinese patent application number is CN201610964993.3, which discloses a PE pipe production process. The process is too simple and does not improve the performance of the PE pipe.

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