The bottom of the mold on the type of manufacturing a thermoplastic container molding apparatus including the type of at least one and provided with a bottom portion of such

摘要

The invention relates to a bottom of a mold (13) for a mold for producing containers, especially bottles, by blow molding or blow drawing, said containers having a body and a bottom (14) of a container, comprising a peripheral base (15) in the shape of a crown, which is connected on the inside to a central area (16) forming an arch consisting of a plurality of radiating impressions (17) alternating with a plurality of radiating projections which are distributed in an angular and equidistant manner about a central axis (Y) of the bottom (14) of the container. For the molding of the central area (16) of the bottom (14) of the container, the bottom (13) of the mold comprises: a plurality of radiating projecting branches (19) distributed in an angular and equidistant manner, and extending approximatively radially to the axis (X) of the bottom of the mold; a central core (20) comprising a lateral wall (21) to which the branches (19) are connected; and in-between sections (22) forming cores of angular sectors regularly separating said branches from each other. The bottom (13) of the mold is characterized in that each radiating projecting branch (19) has an upper part (23) in the form of an inclined platform which descends from the center towards the periphery with at least two points (24, 25) of inflection of the curve.