Method for machining spinning fibrous materials with abandoned plastic bottles as basic materials

The invention relates to a method for machining spinning fibrous materials with abandoned plastic bottles as basic materials. The method includes the following specific steps: (1) abandoned bottle sheets are broken into plastic fragments; (2) the plastic fragments are washed and stirred to remove impurities and dust on the surfaces of the plastic fragments; (3) PE plastic fragments and PET plastic fragments are separated through a Na2CO3 water solution with the concentration being 5%; (4) different auxiliaries are added into a 4% sodium alkyl benzene sulfonate water solution for washing three times, and clean water is used for washing after washing each time; (5) after a water extractor is used for water extraction, the water content of the plastic fragments reaches 10% to 15%; (6) after the water in the plastic fragments is removed through drying with a conveying roadway dryer, the water content is smaller than 0.5%; (7) the plastic fragments in different sizes are screened with a net type vibrating screening machine; and (8) the plastic fragments in different colors are sorted through a plastic color selector so as to be separated and packaged into bags. The method has the beneficial effects of being detailed in step, practical in method, good in effect, uniform in fragment size, unified in color, good in spinning raw material quality and the like.