D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
18/584
D01D 5/32 (2006.01)
Patent
CA 1162373
C-14-53-0277 METHOD FOR MAKING BICOMPONENT FILAMENTS ABSTRACT OF THE DISCLOSURE The method for making bicomponent filaments from two spin dopes wherein the dopes are assembled into al- ternating layers in a feed tube leading to a transition tube connected to a conventional spinnerette, the layers then being fed through the transition tube and the spin- nerette to form filaments. The feed tube has a constant cross-sectional area along the length thereof and the transition tube has a parabolic configuration such that the linear flow rate of the assembled dope layers passing through the transition tube decreases at a uniform rate as the cross-sectional area of the stream of assembled layers is increased to the cross-sectional area of the spinnerette, to thereby maintain the distinctness of the interfaces of the layers and thus insure that good bi- component filaments will be formed.
371617
Mcfadden Fincham
Solutia Inc.
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