Abstract: In order to assure a safe gas discharge from the cavity formed in the tire-vulcanizing mold during the forming of the tire blanks, the profiled segment (1) be divided along at least one separating line (2) into at least two partial segments (3 to 8), that the separating line (2) extends substantially radially in relationship to the tire mold, and that the separating line (2) cuts the areas of the tire-vulcanizing mold to be vented. Manufacture of the segments is done such that the profiled segment (1) is first manufactured in one piece and is thereafter divided into the partial segments by means of a cutting operation, such as a wire cutting spark-erosion cutting operation, leaving behind a narrow cutting line (FIG. 1).

Abstract: A tire-vulcanizing mold including a profiled segment. In order to assure a safe gas discharge from the cavity formed in the tire-vulcanizing mold during the forming of the tire blanks, the invention provides that the profiled segment be divided along at least one interface into at least two partial profiled segments, that the interface extends substantially parallel to a plane of rotation in relationship to the tire mold, and that the interface cuts the areas of the tire-vulcanizing mold to be vented. Manufacture of the segments is done much that the profiled segment is first manufactured in one piece and is thereafter divided into the partial profiled segments by a cutting operation leaving behind a narrow cutting line.