Production method of PP (polypropylene) thin film

Abstract

The invention discloses a production method of a PP (polypropylene) thin film. The production method comprises steps as follows: A, PP random copolymers, PP block copolymers, polyethylene, calcium carbonate, silicon dioxide, amino resin and octadecanol are weighed and put into a reaction kettle; B, nitrogen is introduced into the reaction kettle, the reaction kettle is heated, then glass fibers, talcum powder and carbon black are weighed and added to the reaction kettle, and the reaction kettle is heated continuously; C, a mixed material obtained after the reaction is sent into a twin-screw extruder through a constant-temperature hopper for processing; D, twin-screw extruded sample strips are air-cooled, then heated in a temperature control chamber and water-cooled, master batch is obtained after air drying and grain-sized dicing, finally, the master batch is put in a plastic film blowing machine and subjected to extruded film blowing, and a finished product is obtained. With the adoption of the method, density and flatness of the product are guaranteed, defects are prevented, the product has the advantages of being good in resistance to heat, acid and base, resistant to wear, light, non-toxic, odor-free and the like, and tear resistance, oxidation resistance, corrosion resistance and smoothness of the product are improved dramatically.

Description

technical field [0001] The invention relates to a polymer material, in particular to a production method of a polypropylene film, which belongs to the technical field of chemical materials. Background technique [0002] Plastic film is a kind of film with a wide range of applications, and with the development of society, there are more and more demands for plastic films in all walks of life. Plastic films are mainly used for packaging and laminating, and have been widely used in food , medicine, chemical industry and other fields have brought great convenience to people's life, and polypropylene has good heat resistance and light weight performance, and its market share is also high, so it promotes the development of polypropylene film technology Development, especially the polypropylene film made has the advantages of good heat resistance, acid and alkali resistance, friction resistance, light weight, non-toxic, odorless and so on, which makes it develop very rapidly. Howev...

AI Technical Summary

Problems solved by technology

[0002] Plastic film is a kind of film with a wide range of applications, and with the development of society, there are more and more demands for plastic films in all walks of life. Plastic films are mainly used for packaging and laminating, and have been widely used in food , medicine, chemical industry and other fields have brought great convenience to people's life, and polypropylene has good heat resistance and light weight performance, and its market share is also high, so it promotes the development of polypropylene film technology Development, especially the polypropylene film made has the advantages of good heat resistance, acid and alkali resistance, friction resistance, light weight, non-toxic, odorless and so on, which makes it develop very rapidly. However, the existing polypropylene film has Therefore, its tear resistance, oxidation resistance, corrosion resistance and smoothness cannot be guaranteed, especially the unreasonable process conditions in the production process, which makes the product have defects such as unevenness and insufficient density