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US 2004/0055124 A1Published application
Method of making spun bond web from multicomponent filaments
AssigneeReifenhauser GmbH & Co. Maschinenfabrik
InventorBernd Kunze
Life of this patent
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Abstract
A spun bond mat, after collection on a perforated surface is consolidated by high velocity water jets and then subjected to heat treatment to crinkle or crimp the bicomponent or other multicomponent synthetic resin filaments.
Claims7
A method of making a filament web, comprising the st ps of:
- (a) extruding multicomponent filaments consisting of at least two synthetic-resin components;
- (b) depositing said multicomponent filaments in a mat upon a support;
- (c) consolidating the mat of multicomponent filaments to a web by subjecting said mat to a water jet treatment;
- and
- (d) heat treating said web to effect crinkling of the filam nts thereof and bulking of the web.
2 more elements
Dependencies are inferred from the claim text.