Methods and apparatus for expanding organic substances

Details Methods and apparatus for expanding organic substances Methods and apparatus for expanding organic substances

A - Human Necessities

24

B

131/86

A24B 3/18 (2006.01) A23P 1/14 (2006.01)

Patent

CA 1076913

METHODS AND APPARATUS FOR EXPANDING ORGANIC SUBSTANCES ABSTRACT OF THE DISCLOSURE Methods and apparatus for expanding an organic sub- stance, such as shredded tobacco leaves in which the substance is immersed in liquid carbon dioxide at pressures between approxi- mately 200-1070 p.s.ia. under corresponding equilibrium tempera- tures. The organic substances are placed within a suitable ores- sure vessel which is pressurized to an elevated pressure within the aforementioned range by carbon dioxide gas prior to intro- ducing liquid CO2 into the vessel at this pressure. The sub- stances are immersed in liquid carbon dioxide for a dwell period ranging between one minute and one hour. Upon termination of this period, the impregnated substances are removed from the liquid CO2 and are subjected to a stream of hot gases thereby expanding the substances in size from 10 to 100 percent or greater.

218432

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