Powdered elastomer dry blends and process for injection molding

A powdered elastomeric composition is formed by combining a powder elastomer and a powdered predispersion of liquid or pasty components, such as process oil, lubricants and waxes, in a dry powder filler. The powdered predispersion is combined with the powder elastomer using a ribbon blender to form...

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Bibliographische Detailangaben
Hauptverfasser: MCKANE, JR., FRANCIS W, GROSSMAN, RICHARD F
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A powdered elastomeric composition is formed by combining a powder elastomer and a powdered predispersion of liquid or pasty components, such as process oil, lubricants and waxes, in a dry powder filler. The powdered predispersion is combined with the powder elastomer using a ribbon blender to form a consistent homogenous powder dry blend which can be directly injection molded without any additional mixing other than that occurring in the extruder portion of the injection molding apparatus.