Polypropylene container and process for making the same
AssigneeBall Corporation
InventorsGuy Richards, A.B.M. Rashid, Robert Knoll, Sahin Emre, Kevin Curie, Randolph Davidson
Life of this patent
Estimating the term…
Abstract
A multilayer plastic container comprises a layer of a polypropylene and an intermediate layer directly adjacent the layer of polypropylene wherein at least one of the polypropylene and intermediate layers comprises an adhesive such as maleic anhydride incorporated therein to adhere the layer of polypropylene to the layer of EVOH.
Claims18
1-48. (canceled)
An injection molded preform for reheat stretch blow molding a container comprising polypropylene and having a finish, a neck extending from the finish, a sidewall extending from the neck and a base extending from the sidewall, the preform comprising a finish having a support flange, and a preform blow section having a neck extending from the support flange, a sidewall extending from the neck and a base closing the blow section, the preform sidewall having a thickness at least approximately 2.3 times the thickness of the container sidewall.
An injection molded preform for stretch blow molding a container comprising polypropylene, the preform defining a longitudinal axis and comprising a finish having a support flange, and a preform blow section comprising a neck extending from the support flange, a sidewall extending from the neck and a base closing the blow section, the base having a portion of increased thickness defining a thickness greater than all other portions of the blow section, a lower end of the sidewall and the base are directed inward toward the preform longitudinal axis.
An injection molded preform for stretch blow molding a container comprising polypropylene, and having a finish, a neck extending from the finish, a sidewall extending from the neck and a base extending from the sidewall, the preform comprising a finish having a support flange, and a preform blow section having a neck extending from the support flange, a sidewall extending from the neck and a base closing the blow section, the preform facilitating an average radial stretch ratio of less than approximately 4.5:1 to produce the container.
Dependencies are inferred from the claim text.