PREFORM AND A MOLD STACK FOR PRODUCING THE PREFORM

摘要

Disclosed herein are a preform (500) and a mold stack for producing the preform (500). The preform (500) is suitable for blow-molding into a final-shaped container. The preform (500) comprises a neck portion (502); a gate portion (506); and a body portion (504) extending between said neck portion (502) and said gate portion (506); the neck portion (502) including a support ledge (512), the support ledge (512) being associated with a metal contacting surface (520) and a weight, and wherein a ratio of the metal contacting surface (520) to the weight modulated for a base line support ledge thickness curve is selected in a range of between 0.1 and 1000.