A process of impregnating fine adsorbent particles such as carbon dust or APS
silica
gel powder into the micro-cavities of shaped fibers comprises the steps of continuously
conveying shaped fibers with micro-cavities to a reservoir of the fine adsorbent
particles. The fibers pass through the reservoir to thereby produce relative motion
between the fibers and the particles. Additionally, impact forces are created between
the shaped fibers and the fine particles to assist in impregnating the particles
into the micro-cavities of the fibers. Any excess particles are removed from the
fibers outside the reservoir, and subsequently the shaped fibers impregnated with
fine adsorbent particles are collected for later use in filter applications such
as cigarette filter and air filter applications, for example.
