SCREW COMPRISING DISCONTINUOUS SCRAPING EDGES

摘要

Disclosed is a screw (100) comprising an axially extending shaft portion (102), a screw thread (104) that is located on the shaft portion (102) and has turns (110) extending radially from the shaft portion (102), a screw tip portion (106) adjoining the shaft portion (102), at least one first scraping edge (108) on the screw tip portion (106), and at least one second scraping edge (112) in a region of the shaft portion (102) that adjoins the shaft tip portion (106); the at least one first scraping edge (108) and the at least one second scraping edge (112) are located at a distance from each other and extend in the axial direction along different zones of the screw (100).