Young Koo Kang

US Patent:

7488517, Feb 10, 2009

Filed:

Mar 15, 2007

Appl. No.:

11/724418

Inventors:

Brian Whang - Fullerton CA, US
Young Choon Kang - Fullerton CA, US

International Classification:

B05D 5/00
B05D 1/18

US Classification:

427412, 4274301

Abstract:

A method of producing a porous, rubbery polymer coated sock comprising: 1) preparing a double layered sock; 2) wearing the sock on mold hanging on a continuous line; 3) pre-treating the sole portion of the sock a with calcium nitrate solution; 4) preparing a first nitrile rubber solution by stirring a solution comprising foaming agents and acrylo-nitrile butadiene rubber (NBR) at 1,200 r. p. m. for 30 minutes; 5) dipping the sock worn on the mold in a first, deep bath containing the first, foamed nitrile rubber solution; 6) air-drying the solvent in the polymer solution and developing foam in the rubber layer; 7) preparing a second, foamed nitrile rubber solution by stirring a solution comprising foaming agents and nitrile rubber at 1,200 r. p. m. for 30 minutes; 8) dipping sock worn on the mold in a second, shallow bath containing the second, foamed nitrile rubber solution; 9) air-drying the solvent in the second polymer solution and developing foam in the rubber layer; and 10) washing the sock from step 9) in a cleaning solution to eliminate the calcium nitrate and organic solvents and drying the washed sock 110 C. for 40 minutes.