Continuous process for producing foamable celluloid

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United States of America Patent

PATENT NO 11780141
SERIAL NO

16701823

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Abstract

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The present invention is directed to a continuous process for producing a foamable celluloid product by introducing a solid component (comprising nitrocellulose, chemical blowing agent (CBA), stabilizer and alcohol) and a liquid component (comprising camphor and acetone) into a mixer/devolatilizer machine where the chamber is under atmospheric pressure and having significant overhead space. The chamber is comprised of two zones wherein the first zone has a temperature that is less than the second zone and at least one rotor comprising hollow, temperature-controlled arms having a tilted angle affixed to the rotors. The rotors of the mixer/devolatilizer machine act to mix the solid and liquid components under lower shearing forces, lower mechanical stress and longer residence times than those used by twin-screw extruders.

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Patent Owner(s)

Patent OwnerAddress
U S GOVERNMENT AS REPRESENTED BY THE SECRETARY OF THE ARMYU S ARMY CCDC-AC LEGAL OFFICE BLDG 3 PICATINNY ARSENAL DOVER NJ 07806-5000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abbate, Philip Hackettstown, US 3 2
Gogos, Costas G Wyckoff, US 10 45
Ioannidis, Nikolaos Bloomfield, US 1 0
Ophir, Zohar West Orange, US 10 100
Panchal, Viral Parlin, US 13 16
Sullivan, Francis Morristown, US 26 210
Young, Ming Wan Basking Ridge, US 1 0

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