| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable, on an occasion for executing extrusion molding by using a resin material provided by adding a flame retardant to a polyolefinic resin, users to complete replacement of resins in a short period of time by suppressing waste of the resin as much as possible.SOLUTION: A method for replacing resins is a method for executing a replacement of resins in an extrusion molder for molding a resin molding by melting a fed resin within an extruder 10 and extruding it from the extruder. The method includes the steps of: adding a material including sodium bicarbonate and stearic acid to a polyolefinic flame-retardant resin and feeding into the extruder 10; foaming the sodium bicarbonate within a resin flow channel of the extruder 10 and discharging from the extruder; and replacing the resin fed into the extruder 10 with a polyethylenic flame-retardant resin free of the material including sodium bicarbonate and stearic acid.</p> |
