MOULDED PLASTIC BOTTLE AND MOULD FOR MAKING SAME.

摘要

A moulded plastic bottle including a bottom having improved strength and stability and including a concave central portion (26) connected via a planar ring-shaped surface (28) to a convex peripheral surface (30) for engaging a supporting surface (32), radial grooves (38) being formed in said convex ring-shaped surface (30) and tangentially connected to the planar ring-shaped surface (28).