CONTAINER HAVING A FOAMED WALL

A process for making a container comprises injection molding a polymer preform having a non-reactive gas entrapped within the walls thereof, cooling the preform to a temperature below the polymer softening temperature, reheating the preform to a temperature above the polymer softening temperature, a...

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Bibliographische Detailangaben
Hauptverfasser: SEMERSKY, FRANK, E, VOYLES, WILLIAM, D, SADZEWICZ, EUGENE, M
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A process for making a container comprises injection molding a polymer preform having a non-reactive gas entrapped within the walls thereof, cooling the preform to a temperature below the polymer softening temperature, reheating the preform to a temperature above the polymer softening temperature, and blow molding the preform, to prepare a container consisting essentially of a microcellular foamed polymer having a non-reactive gas contained within the microcellular foam cells.