Extrusion impurity-removal method for modified reworked plastic

Abstract

An extrusion impurity-removal method for modified reworked plastic includes the following steps that (1) waste plastic is collected and selected, large impurities are selected and removed, the plastic is classified according to colors, and the waste plastic of the same type is crushed into 3-5 cm particles; (2) the crushed waste plastic particles are delivered into a cleaning tank, clear water is added into the cleaning tank, the waste plastic particles are cleaned and then fished out, and water in the waste plastic particles is drained; (3) the plastic particles with water drained are delivered into drying equipment to be dried with dehumidified dry air, and the drying effect is improved; (4) the dried plastic particles are delivered into a pulverizer to be processed, pulverized materials are delivered into a powder mixing machine, an assistant is added, and even mixing is conducted; (5) the plastic particles mixed with the assistant are delivered into an extruder and filtered through a double-stage filtering die head, high-quality melt is obtained, and the filtered melt is further evenly mixed so as to be consistent in viscosity; and (6) the melt which is further evenly mixed is subjected to pelleting through an extrusion pelletizer, and the high-purity reworked plastic is obtained.

Description

technical field [0001] The invention relates to the technical field of plastic modification, in particular to a method for removing impurities by extrusion of modified recycled plastic. Background technique [0002] With the increasing development of the global economy, energy and the environment have become the two most important themes, and they are also the solid foundation for our country to take the road of sustainable development. In recent years, my country's plastic processing industry has developed rapidly, and plastic products are ubiquitous, which greatly facilitates people's lives, but it also brings a series of problems. The pollution problem caused by waste plastics has become increasingly prominent, causing serious damage to the environment. Recycling and processing waste plastics to produce recycled plastics can not only reduce the consumption of petrochemical raw materials, but also recycled plastics have outstanding price advantages, obvious economic benef...

AI Technical Summary

Problems solved by technology

[0003] However, the physical, chemical and mechanical properties of the modified plastics and their products produced by the prior art are poor, the impurity content is high, the toughness is poor, fragile, and the durability is not ideal, which affects the utilization of modified plastics and the use of their products.