Method and apparatus for enhanced minimal shear molding utilizing extrusional, pelletization, and melt rheological control of pellets and micropellets and molded objects made therefrom

The various embodiments of the present invention relate to methods for enhancement of minimal shear molding processes. This can be accomplished using pellets and/or micropellets, along with optional powders. The pellets and/or micropellets can be produced through controlled extrusional and pelletiza...

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Bibliographische Detailangaben
Hauptverfasser:	WEAVER NATHAN EUGENE, NEWBURY SHAWN DAVID, WRIGHT ROGER BLAKE, TORNOW MATTHEW JEAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MAKING GRANULES OR PREFORMS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The various embodiments of the present invention relate to methods for enhancement of minimal shear molding processes. This can be accomplished using pellets and/or micropellets, along with optional powders. The pellets and/or micropellets can be produced through controlled extrusional and pelletization processes in combination with nonpowder melt flow rheology that incorporates reduced molding temperature, reduced cure time, reduced rotation axis ratios, and/or reduced rotation rates. Molding can be uniaxial, biaxial, or multiaxial, and rotational, oscillatory, or both. The molded items produced can have a single layer or multiple layers, and can be produced in one or more molding sequences using similar or different chemical compositions.