Study On Extrusion Processing Technology Of LDPE

Extrusion coating processing technology is invented by the Du Pont company of United States in 1945,which has been developed rapidly in developed countries,and more and more products are involved.From the perspective of the development of the market,the production of coated packaging products,processing in foreign countries has been a very mature industry,and maintain a sustained and sTablele growth.In china,because people's quality of life is improved,the demand of packaging materials is also increasing,making people's demand for composite packaging products more and more.This also makes our country is in the rapid development of compound processing field and he market demand of products also has a very fast growth.Mastering the processing characteristics and the requirements of processing technology of the synthetic resin,can effectively promote China's extrusion coating machining technology development and can provide technical service and technical support for the extrusion coating products in our country,which is also conducive to enhancing the application of composite packaging materials.At the same time,it can eliminate the low end and inferior packaging products and enhance the international competitiveness of China's packaging materials.The article studied on the market situation of coated LDPE resin production which includes the domestic and foreign enterprises,polymerization process,product grades and so on.And the characteristics,mechanism and technological process of extrusion coating processing technology are introduced in this paper.Then the extrusion coating processing technology of low density polyethylene(LDPE)as raw material was studied.The effects of various properties of the resin material,processing conditions on the extrusion coating process and the final product quality were analyzed.The effect of the basic properties,structure properties,thermal properties and processing properties of the coatings on processing technology were introduced.The effects of various factors on the processing performance and final product quality were introduced in extrusion coating process.The performance of coating grade synthetic resin will have a decisive influence on the process.These performance factors have an important influence on the processing technology and product quality at different angles,and it is the main factor to be considered before extrusion coating production and processing.The process conditions of production and processing have important influence on the whole process.In the extrusion process,according to the properties of the coating resin raw materials to select and set the process parameters,in order to achieve the best process conditions,and output the best extruded composite film products.There are many changes and influencing factors,which need to be integrated into all kinds of influencing factors,so as to achieve the balance and sTableility of performance.