PREPARATION METHODS FOR ENVIRONMENT-FRIENDLY PLASTIC MASTERBATCH MATERIAL, ENVIRONMENT-FRIENDLY FILM AND ENVIRONMENT-FRIENDLY TAPE

摘要

An object of the present invention is to provide a preparation method for a plastic material which has good plasticity and degradability and can be easily prepared into products in different shapes. The method comprises the following steps: step A: weighing and adding in sequence 56-85% by weight of inorganic mineral powder, 3-10% by mass of polyethylene, 18-30% by mass of polypropylene and 3-5% of aids into a mixer, and mixing for 20-25 min to obtain a raw material mixture, the mixer being at a rotating speed of 100-135r/min; step B: melt-mixing the raw material mixture in the mixer by using an extruder at 180-250 ℃ so that the raw material mixture is molten and extruded, and then pelletizing the extruded raw material mixture at high speed through a knife edge, the prepared pellet material being an environment-friendly plastic masterbatch material. The present invention further provides a method for preparing an environment-friendly film by using the environment-friendly plastic masterbatch material obtained by means of the plastic material preparation method, and a method for preparing an environment-friendly tape by using the obtained environment-friendly film.