Necessity and method of PVC waste recovery
During extrusion of PVC profile, pipe, sheet and plate, a large amount of scrap will appear due to various reasons (such as quality debugging, fault handling, normal opening and stopping, etc.); at the same time, a large number of corner waste will also be produced in the process of door and window production. If the waste is not recovered, it will affect the economic efficiency of the enterprise; if it is not recovered properly, it will affect the quality of the profile. Therefore, PVC waste recovery is an important work that can not be ignored.
PVC waste recycling and multiple extrusion of PVC waste should be strictly separated. After the first recovery of PVC waste is comminuted, it is better to use a twin-screw extruder or a single-screw extruder with lower shear heat to produce auxiliary PVC profiles or pipes, such as splicing, turning angle, square tube, pressing strip, etc.; second, third recovery of PVC waste after comminution requires grinding powder, Depending on the degree of color change and then added to the original mixture, for the production of all kinds of PVC profile.
All kinds of PVC waste must be carefully scrubbed before crushing, to remove dust and dirt from PVC waste. Before smashing different varieties and colors of PVC waste, be sure to clean the grinder carefully so as not to be mixed together and cannot be recycled. When operating the pulverizer, the operator must stand on the side of the pulverizer, not on the pulverizer, in case the residual material in the pulverizer collapses, causing personal injury.