| 摘要 |
PROBLEM TO BE SOLVED: To provide a solution film forming method preventing the oxidation and corrosion of a slide part and enhancing production quality. SOLUTION: A polymer is dissolved in a solvent containing dichloromethane to prepare a raw material dope 30, and hydrochloric acid and chlorine ions are formed in the raw material dope 30 containing chloromethane. A pump 68 feeds the raw material dope 30 to an in-line mixer 50. The pump 68 is equipped with a case, a gear and a slide part such as a shaft or the like. The in-line mixer 50 is equipped with a case and a slide part such as an element or the like and these slide parts are formed of stainless steel containing 17 wt.% or below of Cr, 19 wt.% or below of Ni and 3 wt.% or below Mo and are subjected to carburizing treatment. Since the slide parts have high abrasion resistance, the lowering of the corrosion resistance of the slide parts due to abrasion at the time of operation of a film forming line is suppressed. COPYRIGHT: (C)2008,JPO&INPIT
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