Extruded tubular films and processes for manufacturing tubular films

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United States of America Patent

PATENT NO 11951667
APP PUB NO 20220212390A1
SERIAL NO

17603643

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Abstract

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A process for manufacturing a tubular film such as an edible casing film or a packaging film. The process includes the steps of providing a preblended powder composition containing a polymer matrix, a plasticizer, and water; feeding the preblended powder composition to an extruder; heating the preblended powder composition to a temperature above 100 degrees Celsius for a sufficient time to fully hydrate the polymer matrix and to convert the powder composition to a flowable mass; and extruding the flowable mass through a tubular die of the extruder to form the tubular film. The tubular film comprises: about 40-75 wt % polymer matrix; about 10-35 wt % plasticizer; and about 10-35 wt % water. The polymer matrix component is fully hydrated under the temperature, pressure and shear conditions inside the extruder, and may have a component which is only fully hydrated at temperatures above about 100 degrees Celsius.

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Patent Owner(s)

Patent OwnerAddress
MACQUARRIE REGTORONTO ONTARIO M8X 2L4

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
MacQuarrie, Reg Ontario, CA 13 76

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