Door sash for vehicle and method of manufacturing the same

摘要

To use the same sash material for producing two types of a vehicular door sash, a lower-cost type provided with no sash molding, and a luxury type provided with sash molding produced through additional roll molding means to reduce the width of its flange portion. The additional roll molding means (D) performed by a plurality of rollers (D 1, D 2, D 3 ) includes a crushing step that crushes a space formed on the back surface of the flange portion 3 under pressure, and a bending step that bends an end portion 12 of the crushed flange portion 3 at the side of the groove portion 1 upward.