BLADE FOR COMPRESSOR AND ITS MANUFACTURING METHOD, AND HELICAL COMPRESSOR AND ITS MANUFACURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a helical blade, namely a blade for a compressor, which has sufficient rigidity and flexibility and high shape accuracy over the whole length and its manufacturing method, and a helical compressor using it and its manufacturing method. SOLUTION: Injection molding is performed by adding supercritical fluid to fluororesin in a cylinder 32 of an injection molding machine 31, and a predetermined shape is formed in dies 41 and 43.