| 摘要 |
<p>PURPOSE: Provided are a process and an apparatus for the separation of oil from chopped elastane fibers which contain preparation oils and which are provided for reprocessing. CONSTITUTION: The process for separating at least 30% by weight of the polydimethylsiloxane-containing preparation oil from elastane fibers which contain such preparation oils, comprises a) preparing a mixture of chopped elastane fibers of different linear densities, comprising fibers with linear densities in the range of about 11 to about 10,000 dtex and in which the proportion of fibers with a titre less than or equal to 900 dtex is less than 80% by weight of the total mixture of fibers, b) mixing the chopped elastane fiber mixture with a bath of water in a mixing vessel having rotating mixers at a ratio of water to chopped elastane fibers of at least 5/1 by weight, c) mixing the fiber mixture and the water at a speed of rotation of the rotating mixers of at least 1200 rpm, d) maintaining the mixing vessel contents at a temperature ranging from room temperature to 90 deg.C during the mixing of the fibers and the water, e) continuing the mixing of the fibers and the water for a duration of 10 to 60 minutes, and then f) separating the fiber material from the bath of water.</p> |
