The invention discloses a processing method for a novel polyurethane dust cover, comprising the following steps: 1) Granulation: granulating component a, component b and component c in a twin-screw extruder at a weight ratio to form color masterbatch particles; wherein component a is TPU or EVA material, component b is nano-scale particles of mineral salt, and component c is pigment; 2) Mixing: mixing and stirring TPU material with color masterbatch particles at a weight ratio, and heating at 100±10°C for 4–12 hours to obtain a raw material; 3) Making the obtained raw material into a parison through a blow molding machine die, and inflating the parison in a mold by a downward blowing method to form a product. The invention also provides a product prepared by the method. By adopting the method of the invention, the processable temperature range of the raw material is enlarged, the adhesion to the screw cylinder wall and the inner wall of the die head is reduced, the parison surface has good smoothness, the viscosity of the raw material is increased, the product has better elastic performance, and the product qualification rate is improved.
Area Code: CN
Application Number: CN201811546119.3
