Conjugate fiber, fibrous material and fibrous article made therefrom and process for production thereof

A fibrous adsorptive material in the form of tow, web, fabric, sheet, block, ball or flock consisting of a sheath-and-core conjugate fiber of a high melting polyethylene terephthalate core component and polystyrene as a low melting polymer sheath component, said low melting polymer sheath component having a melting point at least 40.degree. C lower than that of the high melting polyethylene terephthalate core component, both components being present as continuous phases, finely divided particles of an adsorbent embedded in the surface of said low melting polymer component, said adsorbent being selected from the group consisting of active carbon, active clay, active alumina, silica gel, active zeolite, molecular sieve, white carbon, cyclodextrin, ion-exchange resins, copper, platinum, silver, zinc oxide, nickel oxide, manganese oxide, cobalt oxide and cerium oxide, and said finely divided particles of said adsorbent being firmly secured by melt-adhering to the surface of said low melting polymer component with the bottom portions of said finely divided particles of said adsorbent being embedded therein by heating the conjugate fiber at a temperature higher than the melting point of the low melting polymer component contained in said conjugate fiber, but lower than the melting point of the high melting polyethylene terephthalate component contained therein.