Method of making spun-bond web from multicomponent flament

A method of making a filament web, the method comprising the steps of:

• a) extruding multicomponent filaments consisting of at least two synthetic-resin components from a spinneret;
• b) passing the extruded filaments through a process air shaft;
• c) directing cold air against the filaments in a process air shaft to cool the filaments;
• d) aerodynamically stretching the cooled filaments in the process air shaft;
• e) excluding the entry of air other than the cooling air into the process air shaft;
• f) depositing the cooled and stretched multicomponent filaments in a mat upon a support;
• g) thereafter consolidating the mat of multicomponent filaments to a web by subjecting the mat to water jets at a pressure of 10 bar to 200 bar:
• such that the multicomponent filaments fuse together at crossover points and the filaments have a considerable free length between crossover points where they are fused;
• and
• h) subsequently heat treating the web to crinkle the filaments thereof and bulk of the web.