Hydroblow preform design
AssigneeAmcor Limited
InventorsKirk Edward Maki, George David Lisch
Life of this patent
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Abstract
A mold device for forming a plastic container from a preform. The preform includes at least one exterior feature formed thereon. The mold device comprises a mold defining a mold cavity, and a central exterior rod being movable within the mold cavity. The central exterior rod includes a locating feature formed therewith that is engagable with the at least one exterior feature of the preform for maintaining a central orientation of the preform within the mold cavity during forming.
Claims16
A method of forming a plastic container from a preform, said preform having at least one exterior feature formed thereon, said method comprising:
- positioning said preform in a mold cavity of a mold, said mold cavity having a cavity axis;
- injecting a fluid within said preform at a pressure sufficient to urge said preform into an expanded shape against said mold cavity;
- and
- actuating a central exterior rod having a locating feature formed therewith within said mold cavity such that said locating feature engages with said at least one exterior feature of said preform to prevent said preform from slipping off said central exterior rod and to maintain a concentricity of said exterior feature of said preform with respect to the cavity axis within said mold cavity during said injecting without substantial modification of said exterior feature of said preform.
A method of forming a plastic container from a preform, said preform having at least one exterior feature formed thereon, said method comprising:
- positioning said preform in a mold cavity of a mold, said mold cavity having a cavity axis;
- injecting a fluid within said preform at a pressure sufficient to urge said preform into an expanded shape against said mold cavity;
- and
- actuating a central exterior rod having a locating feature formed therewith within said mold cavity such that said locating feature engages with said at least one exterior feature of said preform to prevent said preform from slipping off said central exterior rod and to maintain a concentricity of said exterior feature of said preform with respect to the cavity axis within said mold cavity during said forming without substantial modification of said exterior feature of said preform.
Dependencies are inferred from the claim text.