Poly(ethylene glycol) and silicon oil with molecular weight from 1,000 to 5,000 were impregnated into poly (ethylene terephthalate) and polypropylene fabrics using supercritical carbon dioxide. The amounts of impregnated polymers were estimated by weighting method. The existence and the distribution of these polymer in the fiber was estimated using electron probe micro analyzer and x-ray photoelectron spectroscopy.