Method for producing wire drawing woven bag by adopting discarded plastic one-step method

Abstract

The invention discloses a method for producing a wire drawing woven bag by adopting a discarded plastic one-step method. PP and PE discarded plastics are classified, breaking, cleaning, rinsing and mixing are carried out, direct melting and plasticizing are carried out, a thin film is extruded from a die head after double filtration is carried out, water cooling is carried out to form membrane and the membrane is chopped into an ingot wire, the ingot wire is drawn into an ingot, and the ingot can be used by various plastic knitting machines. The original pelletizing and cooking production processes are eliminated, a rinsing automatic process is integrated, sewage is treated and the rinsing water is recycled, energy consumption required by a heating system and all the motive powers in the pelletizing and cooking production process is greatly saved, the production cost is low, and a hidden trouble in safety production in the industry is also eliminated; and meanwhile, the product quality achieves the national standard, and the quality and product quality of regenerated plastic are improved.

Description

[0001] 1. Technical field [0002] The invention relates to waste plastic processing technology, in particular to a production method for producing finished silk of woven bags by using recycled PP and PE waste plastics through one-step wire drawing. 2. Background technology [0003] In 2009, the output of plastic synthetic resin in my country exceeded 45 million tons, and the consumption of plastic synthetic resin was 45.78 million tons in the same year. China is already a veritable big producer, importer and consumer of plastic synthetic resins. The recycling and reuse of waste plastics is also a major trend and orientation at present. The use of waste plastics to produce packaging bags for various industrial and agricultural products is currently the largest way to use them. In 2009, Yunnan Province actually used 750 million plastic-woven cement packaging bags, an increase of 180 million compared with 2007 and an increase of 130 million compared with 2008. billion, an in...

AI Technical Summary

Problems solved by technology

[0004] At present, my country's plastic woven packaging products industry adopts the traditional waste plastic woven bag (two-step method) process, which not only has strict requirements on the selection of waste plastic materials, but also must go through the production process of granulation and frying before drawing, and the repeated heating consumption in production High energy consumption and large waste of raw materials. This not only increases labor costs due to repeated energy consumption, but the most important thing is that there are serious safety hazards, environmental pollution and poor product quality in the granulation production process. Every year, industrial accidents occur in the granulation section of each factory. It is not uncommon for a large amount of sewage discharge to cause serious environmental pollution, and waste plastics are melted and plasticized at high temperature during the granulation process, so that the recycled plastic particles obtained from granulation are melted and plasticized again at high temperature for extrusion in the wire drawing production, resulting in waste The molecular structure of the plastic is destroyed by repeated melting of the plastic, resulting in a decrease in the strength of the flat filament, which affects the quality of the plastic woven packaging product