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US 4,358,899 AGranted
Flow-through dryer and method for rapid drying of porous foams
AssigneeW. R. Grace & Co.
InventorsRobert M. Murch, John J. Eagan
Life of this patent
Estimating the term…
Abstract
A drying chamber for water laden foams supports the foam structure on a porous support and warm air is forced through the foam to dry it. An air impervious mask on the porous support around the object insures that all the air only flows through the object. Multiple objects can also be dried and loaded outside the drying chamber.
Claims12
An apparatus for drying foraminous structures comprising
- a drying chamber with means to permit entry and exit of the structure to be dried;
- a gas inlet means on one side of the chamber;
- a gas outlet means on said chamber spaced apart from said gas inlet means and the outlet of which is open to the atmosphere;
- a heated gas supply means adapted to supply heated gas to the gas inlet means;
- a support means in said drying chamber between the gas inlet means and the gas outlet means to support the structure to be dried;
- gas directing means in said drying chamber to direct the gas flowing through the chamber to essentially pass only through the foraminous structure;
- and
- means to circulate heated gas through the chamber and out the outlet means whereby water is removed from the foraminous structure and it is dried.
5 more elements
A batch process method of rapidly drying foraminous structures by forcing heated air through the structure in a drying chamber comprising
- inserting said structure to be dried onto a flat porous support member in the drying chamber positioned between a heated gas inlet and a gas outlet, said support member having a gas impervious mask around the perimeter outside of the area of said structure;
- circulating heated air rapidly through said chamber so that essentially all of the heated air passes through said structure and then exhausting said heated air to the atmosphere until said structure is dried;
- and
- removing the dried structure from the drying chamber.
1 more element
Dependencies are inferred from the claim text.