摘要 |
A scroll member having: a base material, having an end plate and a spiral blade projecting from the end plate toward another scroll member; a resin layer (L1) formed on the base material; and multiple grooves (C) formed in the surface of the resin layer. The multiple grooves (C) are formed in the surface of the resin layer (L1). A cross section of the grooves (C) has a shape resembling a semicircle or the letter 'U', with the width of the groove decreasing as the depth of the groove increases, and the change in the width becoming more extreme toward the bottom of the groove. The grooves (C) are formed by moving the tip of the blade of a cutting tool along the original surface of a resin layer initially formed on the base material (LO) by a coating process or the like. |