To provide an apparatus for forming of projected articles made of a synthetic resin stood on a flat plate-like base wherein the forming speed can be arbitrarily changed in a small installation space and even during deforming, useless thermal carrier is not given except deformation site.

This apparatus 20 for secondary molding molds required shapes by melting and deforming the top parts of projected articles 2 of the primary molded article with a number of projected articles 2 wholly rising from the surface of a flat plate-like base 1 made of a synthetic resin. In this case, a press member 22 and an inner heating device 21 such as an ultrasonic tool horn pinching a transferring path of the primary molded article and arranged up and down by specified intervals are provided and the press member 22 is arranged at a position for pressing and deforming the top parts of the projected article 2 and the inner heating device 21 is arranged at a position being brought into contact with the back face of the flat plate-like base 1.