| 摘要 |
For severing a plurality of hollow fiber membranes comprised of thermoplastic material which membranes are arranged in the form of a bundle and also sealing the bores of the membranes in an essentially fluid-tight manner without any significant decrease in membrane performance or strength, a heated member is passed through the bundle in a path transverse to the orientation of the hollow fiber membranes wherein the temperature of the heated member is above the melt temperature of the hollow fiber membranes. Advantageously, the hollow fiber membranes which are severed have a significant void volume and may be anisotropic with a thin, dense skin. The heated member can be a hot wire or ribbon. |
