For the selection of polypropylene recycled material, it is necessary to look at the appearance of the recycled material. The surface shows a wax feeling. If it is black and bright without bubbles, it is better to take particles from the recycled material and put them on the teeth to bite gently. The harder is polypropylene recycled particles, the more biting is very good PP woven tape recycled particles, and the softer is PE recycled particles put them on the flame to ignite, After leaving the flame, it can also burn by itself. The flame color is blue at the bottom, and there is a large amount of black smoke melting and dripping from the yellow well at the top during the combustion process. What gives off the oil smell is that the PP ribbon can continuously shed fine filaments in the melting state. It is that the PP regeneration section draws out short silk heads, and burns to obtain tail polymer B-end regeneration section particles with wax like odor.
