A PREFORM AND A MOLD STACK FOR PRODUCING THE PREFORM

• Main Authors: SIGLER, LAURENT CHRISTEL, WITZ , JEANRISTOPHE, MAI , ARNOLD
• Format: Patent
• Language: English; French; German
• Published: 12.01.2011
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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.