Lightweight polymeric container finish
A polymeric container including a base, a body, a finish, finish threads, and a tamper lip. The finish threads are at an outer surface of the finish, and are configured to cooperate with closure threads of a closure to secure the closure to the finish. The tamper lip extends from the outer surface of the finish, and is configured to replace the support flange during handling, and to cooperate with a tamper band of the closure. A recess is below the tamper lip. The recess retains the tamper band below the tamper lip when the closure is removed from cooperation with the finish. A gripper ring is between the finish threads and the tamper lip. The gripper ring is configured to cooperate with a gripper for grasping the finish.
1. A polymeric container comprising;
a base;
a body extending from the base; and
a finish defining an opening through which a product can pass into, and out of, an internal volume of the container defined at least in part by the body;
finish threads at an outer surface of the finish that are configured to cooperate with closure threads of a closure to secure the closure to the finish, the finish is devoid of a support flange;
a tamper lip extending from the outer surface of the finish, the tamper lip includes a rounded upper surface that is opposite to a planar lower surface configured to cooperate with a tamper band of the closure, during blow molding of the polymeric container from a preform the preform is supported by the planar lower surface of the tamper lip;
a recess below the tamper lip that retains the tamper band below the tamper lip when the closure is removed from cooperation with the finish; and
a gripper ring protruding outward from the outer surface between the finish threads and the tamper lip, the gripper ring is closer to the tamper lip than the finish threads such that a lower portion of the outer surface below the gripper ring is smaller in area than an upper portion of the outer surface above the gripper ring, an under surface of the gripper ring and the lower portion of the outer surface are configured to cooperate with a curved edge of a gripper for grasping the finish;
wherein the tamper lip extends further from the outer surface than the gripper ring.
2. The polymeric container of claim 1 , wherein the gripper ring is between the upper portion of the outer surface of the finish and the lower portion of the outer surface of the finish.
3. The polymeric container of claim 2 , wherein the upper portion of the outer surface of the finish and the lower portion of the outer surface of the finish are equidistant from a radial center of the finish.
4. The polymeric container of claim 3 , wherein an outermost portion of the gripper ring is further from the radial center of the finish than each of the upper portion and the lower portion of the outer surface of the finish.
5. The polymeric container of claim 1 , wherein an undersurface of the gripper ring is configured to cooperate with the gripper for grasping the container and the preform.
6. The polymeric container of claim 1 , wherein the finish is configured to accept a closure that has a diameter of 18 mm to 43 mm.
7. The polymeric container of claim 1 , wherein the tamper lip is configured to be engaged to support the preform of the polymeric container in a mold or a blow mold striker plate, on the infeed rails of a blow molding machine, and on a star wheel assembly.
8. The polymeric container of claim 1 , wherein the gripper ring extends entirely around the finish.