METHOD FOR COATING THE INSIDE OF AN EXTRUDER DIE AND A DIE COATED THEREBY

摘要

A method for coating the inner surface of an extruder die and an extruder die coated thereby are provided to achieve improved durability and abrasion resistance under high pressure high temperature condition. A method for coating the inner surface(4) of an extruder die(1) includes a step of grinding the inner surface of the extruder die, a step of forming a top coating layer(2) on the top of the inner surface of the extruder die through electrostatic coating of polyfluoroalkoxyethylene fluorine resin powder, and a step of sintering the top coating layer.