Heat- and pressure-resistant bottle with increased oxygen barrier

Abstract

A bottle exhibiting thick walls, constant material thickness, a hemispherical-shaped base-forming portion and a polygonal-shaped flange. The thick walls increase the bottle's resistance to pressure, oxygen permeation and heat, over that of traditional bottles. The hemispherical-shaped base increases the bottle's resistance to pressure, over that of traditional bottles. The polygonal-shaped flange enables processing equipment, including bottle fillers and bottle cappers, to handle the bottle.

1 . A hollow, cylindrical-shaped bottle having an open-ended mouth-forming portion, an intermediate body-forming portion and a closed, hemispherical-shaped base-forming portion.  
   
   
       2 . A bottle as defined in  claim 1  wherein said body-forming portion has constant outer and constant inner diameters for improved heat distribution during shrink sleeve application.  
   
   
       3 . A bottle as defined in  claim 2  wherein said body-forming, base-forming and mouth forming portions have a minimum wall thickness of 1.5 mm and maximum wall thickness of 4 mm for increased stress resistance, increased heat resistance and increased oxygen barrier.  
   
   
       4 . A bottle as defined in  claim 3  wherein said mouth-forming portion comprises a polygonal-shaped flange perpendicular to the plane of the body-forming portion and where each isometric outside surface of the flange is substantially straight and used for holding and stabilizing said bottle during processing.