公开(公告)号：US4053143A

公开(公告)日：1977-10-11

申请号：US610077

申请日：1975-09-03

申请人： Akira Hosokawa ,  Yukifusa Miyazaki ,  Yoshio Yada ,  Yasuo Kitamura ,  Masasi Takeda

发明人： Akira Hosokawa ,  Yukifusa Miyazaki ,  Yoshio Yada ,  Yasuo Kitamura ,  Masasi Takeda

IPC分类号： B01F7/08 ,  B29B7/00 ,  B29C47/00 ,  B29C47/60 ,  B30B11/24

CPC分类号： B29C47/60 ,  B29C47/0009

摘要： There is provided a screw for use in an extruder comprising a melting section and a metering section and a decompression section therebetween so that the head pressure profile along the longitudinal direction of the extruder is higher than atmospheric pressure and has an inflection point, with the result that a high melting performance is attained and a high extrusion stability is ensured even at a high extrusion rate.