Title:
SCREW COATED WITH GLASSY LAYER OR ENAMEL AND INJECTION OR EXTRUSION DEVICE HAVING THE SCREW
Document Type and Number:
Japanese Patent JP2002326261
Kind Code:
A
Abstract:
To provide a screw excellent in corrosion resistance and abrasion resistance by simple structure in a screw type pressure ejection apparatus which injects or extrudes a material by a screw, an injection device, and an extrusion device.
A glassy layer or an enamel coat 24 is formed on the screw 7 of the screw type pressure ejection apparatus, or the glassy layers or the enamel coats 24 are formed on both the screw 7 and a check ring 13.
Inventors:
HARA HITOSHI
Application Number:
JP2001168835A
Publication Date:
November 12, 2002
Filing Date:
April 27, 2001
Export Citation:
Assignee:
HARA HITOSHI
International Classes:
B65G33/26; B01F15/00; B29B7/14; B29C45/60; B29C47/60; (IPC1-7): B29C45/60; B29B7/14; B29C47/60