FILAMENTS WITH POROUS SURFACE

摘要

Porous threads and a method for their production from a homogeneous mixture. The mixture comprises at least two components of which one is a fusible polymer and the other is a liquid which is inert towards the polymer. These two components are such as to form a binary system having in the liquid state, a region in which they are totally miscible and a region in which there is a discontinuity in mixing. The mixture is extruded at above the critical temperature of the binary system into a bath of the inert liquid component having a temperature below the critical temperature and the thread structure formed is solidified.