Patent ID: 6866905

Claim:
An injection blow-molded tumbler formed from a polymeric material including a copolymer of styrene and butadiene comprising: (a) a base defining a base diameter forming the bottom of said tumbler, the base also defining an outer edge thereof; (b) a sidewall integrally formed with said base extending upwardly from the outer edge thereof defining about its upper extremity an opening having a diameter generally larger than the base diameter provided with a fortified rim integrally formed with the sidewall in the form of a continuous solid polymer bead; wherein said fortified rim has a thickness from about 1.5 to about 6 times the thickness of the adjacent portion of said sidewall and wherein the volume of the injection blow-molded tumbler is from about 1.5 to about 4 times the volume of an injection molded parison from which it was prepared, and wherein further the sidewall defines a substantially straight profile extending between the base and the upper opening defined thereby.