US 11,666,509 B2
Systems and methods for high humidity curing within tablet coating system
Greg Bengard, Webster Groves, MO (US)
Assigned to SpecGX LLC, Webster Groves, MO (US)
Filed by SpecGX LLC, Webster Groves, MO (US)
Filed on Jul. 29, 2021, as Appl. No. 17/388,957.
Application 17/388,957 is a continuation of application No. 16/549,151, filed on Aug. 23, 2019, granted, now 11,077,024.
Application 16/549,151 is a continuation of application No. 15/568,587, granted, now 10,441,508, issued on Oct. 15, 2019, previously published as PCT/US2015/027558, filed on Apr. 24, 2015.
Prior Publication US 2021/0353502 A1, Nov. 18, 2021
Int. Cl. A61J 3/00 (2006.01); A61K 9/28 (2006.01); B05B 16/60 (2018.01); B05B 12/12 (2006.01); B05D 3/04 (2006.01); F24F 6/18 (2006.01); F24F 13/04 (2006.01); F24F 13/08 (2006.01); A61J 3/06 (2006.01); B05B 13/02 (2006.01)
CPC A61J 3/005 (2013.01) [A61K 9/2893 (2013.01); B05B 12/12 (2013.01); B05B 16/60 (2018.02); B05D 3/0486 (2013.01); F24F 6/18 (2013.01); F24F 13/04 (2013.01); F24F 13/08 (2013.01); A61J 3/06 (2013.01); B05B 13/0257 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of supplying a humid air flow to a pan coater of a tablet coating system, the method comprising:
providing the pan coater to apply one or more coatings to a tablet;
providing a recirculating air handler operably connected to the pan coater, the recirculating air handler comprising:
an inlet duct operable to receive exhaust air from the pan coater;
a humidifier to introduce moisture into the exhaust air in an amount resulting in an exit air having a relative humidity of up to about 94%;
a vent operable to release air from the recirculating air handler to the atmosphere via a vent valve, wherein the vent valve is opened as needed to maintain a pressure within the pan coater of at least 0.15 inches of water column below atmospheric pressure; and
an exit duct operable to deliver the exit air to the pan coater;
one or more configurable valves; and
a control system comprising a mode control operable to coordinate opening and closing of the one or more configurable valves to switch an air supply of the pan coater from a flow-through air handler to the recirculating air handler.