Patent ID: 6428735
Filing Date: 2002-08-06
Classification: B29B,B29C,B29K

Abstract:
A method for blow molding on a blow-molding machine a bottle with an internal web structure positioned between two handgrip depressions, said method comprising the steps of:providing a preform having a neck portion with an open end, a body portion depending from said neck portion, a bottom portion depending from said body portion and forming a closed end, said neck portion, body portion, and bottom portion defining a hollow space and having a common longitudinal axis, said preform also including an internal web portion extending completely across said hollow space between opposing sides of said body portion; in-feeding said preform into said machine; selectively heating said body portion, bottom portion, and internal web portion of said preform; inflating said preform in a bottle blow mold cavity defining said handgrip depressions to form said bottle having handgrip depressions; subjecting said internal web structure to enhanced cooling while said bottle is located within said blow mold cavity; and removing said bottle from said bottle blow mold cavity.