Patent ID: 6241503
Filing Date: 2001-06-05
Classification: D01D

Abstract:
A spin pack for spinning composite yarn having at least two different individual polymer fiber components, comprising:a filtration plate which defines a plurality of equal volume filtration chambers, each said filtration chamber having a filter element disposed therewithin;a manifold plate having at least one and another distribution channels for receiving at least first and second different polymer melt flows having lesser and greater volumetric throughputs, respectively, to be spun into said at least two different individual polymer fiber components and for directing the at least first and second different polymer melt flows to respective separate first and second groups of said filtration chambers;a distribution plate interposed between said filtration and manifold plates having (1) at least one aperture for establishing communication between said one distribution channel of said manifold plate and at least one of the filtration chambers of said first group thereof so as to direct said polymer melt flow having said lesser volumetric throughput through said at least one filtration chamber of said first group, and (2) a plurality of other apertures for establishing communication between said another distribution channel of said manifold plate and a corresponding plurality of filtration chambers of said second group thereof so as to direct said polymer melt flow having said greater volumetric throughput through said plurality of filtration chambers of said second group, whereby the volumetric throughputs of said first and second polymer flows is essentially equalized through said first and second groups of filtration chambers; anda spinneret plate for receiving said first and second polymer melt streams filtered through said filtration chambers of said first and second groups thereof and for spinning the different individual polymer fiber components.