Patent ID: 7858015

Claim:
A method for making a beverage container insulator having an inside surface, an outside surface, a first end at a first opening, a second end at a second opening and a body portion between the first and second ends, wherein each opening is defined by a perimeter that joins the inside and outside surfaces, the method comprising: creating a slurry comprising water and a polysaccharide; presenting at least one male mold having a generally frusto conical geometry to the slurry and causing a portion of the slurry to temporarily adhere to the at least one mold; removing the mold from the slurry and then removing the insulator; and collapsing the insulator such that in cross section it forms an ellipsoid having a major axis to minor axis ratio greater than about 2.5 (A maj /A min >2.5) and less than about 2.7 (A maj /A min <2.7).