Plastic container and base portion for plastic container

Abstract

A plastic container includes a neck portion, a sidewall portion, and a base including a support ring that extends downward and is configured to support the container on a support surface; a first base portion that extends upwardly from the support ring; a second base portion that extends downwardly from the first base portion; and a reentrant portion that extends upwardly from the second base portion. In embodiments, the container can hold carbonated contents and the sidewall portion may be substantially smooth.

What is claimed: 
     
         1 . A plastic container configured to hold carbonated contents, the plastic container comprising:
 a neck portion;   a sidewall portion extending below the neck portion, the sidewall portion being substantially smooth; and   a base extending below the sidewall portion, the base including:
 an annular support ring that extends downward and is configured to support the container on a support surface; and 
 a reentrant portion disposed about a centerline of the plastic container that extends upwardly from the support ring; 
   wherein a thickness of the support ring is greater than a thickness of the sidewall portion;   
       and the thickness of the annular support ring is about 50% greater than the thickness of the sidewall portion.