| 摘要 |
<p>MAN-MADE ANTISTATIC TEXTILE FILAMENT A novel biconstituent filament, such as multifilament or monofilament yarn or staple fiber, useful for dissipating static electricity from normally static prone textile articles comprising a first constituent substantially adhered legthwise to a second constituent is provided. The first constituent is made of a synthetic thermoplastic fiber-forming polymer that is virtually non-conductive to electricity. The second constituent is a normally non-conductive synthetic thermoplastic fiber-forming polymer rendered electrically conductive by having dispersed uniformly throughout a sufficient quantity of electrically conductive carbon black to provide an electrical resistance of less than 1 x 101.degree. ohms per centimeter for the biconstituent filament at a direct current potential of 0.1 volt as measured at 20% relative humidity and 21.degree.C. The cross sectional area of the second constituent comprises from about 1 to 30 percent of the cross sectional area of the whole filament. The first constituent partially encapsulates the second constituent in an amount of at least 50 percent. The interface between the two constituents is curvate in shape and extends from one side to the other of the filament. Textile articles containing only a small amount of such filaments are rendered antistatic and retain such property even after prolonged use.</p> |
