Extrusion blow molding system having enhanced pinch geometry
AssigneeEastman Chemical Company
InventorsMark Allan Treece, William Joseph Burgess, Harold Eugene Dobbs, Michael Wandell Cradic
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Abstract
Extrusion blow mold assemblies, extrusion blow molded articles exhibiting increased strength and enhanced processability, and processes for making said articles. In some aspects, the articles produced herein can include relatively rigid bottles and other containers that exhibit high drop impact performance, while still being relatively easy to deflash. Such containers can be efficiently produced on a commercial scale and are widely usable in a variety of applications, including those in the food, beverage, cosmetic, and medical industries.
Claims20
An extrusion blow molded container comprising:
- a neck;
- a body;
- and
- a base,
- wherein said base comprises at least one base parting line resulting from the formation of said container in a blow molding apparatus, wherein said base further comprises a parting line support bead for reinforcing at least a portion of said base parting line, wherein said support bead has a height-to-width ratio of at least 0.05:1 and not more than 2:1.
An extrusion blow molded container comprising:
- a neck;
- a body;
- a base;
- and
- a supported tail flash extending along at least a portion of said base, wherein said supported tail flash includes a support bead coupled to said base and an elongated portion extending outwardly from at least part of said support bead,
- wherein said elongated portion of said tail flash is configured for removal from said support bead, wherein the torque required to remove said elongated portion from said support bead is at least 15 percent less than the torque required to remove the tail flash from an analogous extrusion blow molded container that does not include a support bead.
Dependencies are inferred from the claim text.