PREFORMS FOR OBTAINING CONTAINERS AND CORRESPONDING CONTAINER

摘要

A preform for obtaining a container comprises a hollow body (2) having a side wall (5) extending around a longitudinal axis (Z) and an end wall (4) arranged transversely to said longitudinal axis (Z), a point (A) of said end wall (4) having a value of specific residual melting enthalpy (?H_spec) ; there is at least one point (B, F, L, O) of said side wall (5) having a further value of specific residual melting enthalpy (?H_spec) that is greater than said value. A container comprises a containing body (31) having a first end zone (33) closed by a base wall (32) and a second end zone (34) suitable for engaging closing means; there is at least one point (A') of said base wall (32) having a value of specific residual melting enthalpy (?H_spec) that is significantly less than the specific residual melting enthalpy (?H_spec) of the points (B', F', L') of said containing body (31) distinct from said second end zone (34) .