Loading patent…
AssigneeEastman Chemical Company
InventorsSteven Lee Stafford, Lavonna Suzanne Buehrig, Louis Thomas Germinario, Terrill M. McGee, Gary Wayne Minnick, Eric Jon Moskala, Michael Eugene Donelson
Estimating the term…
A method for reducing or eliminating plate-out during the process used to produce stretch blow molded containers from polyester preforms by crystallizing the low molecular weight polyester molecules in or on the preform exterior surface before stretch blow molding the preform into a container. The molecules are crystallized using a crystallization process selected from (1) treating the outer surface of the preform with a solvent that is capable of crystallizing low molecular weight polyester molecules in polyester or (2) heating the outer surface of the preform to a temperature and for a time suitable for crystallizing low molecular weight polyester molecules in polyester. Plate-out is reduced because the crystallized molecules do not migrate out of the preform and form plate-out deposits on the mold.
A method for reducing or eliminating plate-out during the process used to produce stretch blow molded containers from polyester preforms comprising crystallizing at least a portion of the low molecular weight polyester molecules at the exterior surface of the preform before stretch blow molding the preform into a container.
A method for making a polyester preform useful for reducing or eliminating plate-out during the process used to produce stretch blow molded containers from polyester preforms comprising crystallizing low molecular weight polyester molecules at the preform exterior surface.
A polyester preform useful for reducing or eliminating plate-out during the process used to produce stretch blow molded containers from polyester preforms comprising a polyester preform having crystallized low molecular weight polyester molecules in or on the preform exterior surface.
Dependencies are inferred from the claim text.