SELF-STANDING POLYESTER CONTAINERS FOR CARBONATED BEVERAGES

摘要

The invention provides a blow molded two liter carbonated beverage bottle (1 ) weighing under 50 grams and having a unique petaloid base (7) an d an ability to be self-standing on a support surface. The base comprises a petaloid design which has a plurality of at least three (preferably five) fe et 9. Between each adjacent pair of feet is a radially extending valley (12) the width of which decreases with increasing radial distance from the longitudinal axi s of the bottle toward a point of convergence (14) radially outside the bottle's diameter. The valley floor generally follows the hemispherical base shape an d opens to an extended portion (13) of that base shape lying radially outwardl y of the feet. The valley and extended portion, on initial pressurization of the bottle, cause deformation of the extended portions outwardly with a resulting raisin g of the center of the base away from the support surface.