| http://www.w3.org/ns/prov#value | - Since the prior art disclosed in these documents, however, is a system in which two polymers having the difference in intrinsic viscosity are extruded from an orifice directly after they meet together, if the difference in melting viscosity between the two polymers is large, it is impossible to sufficiently prevent the deviation of a flow of melted polymer, and as a result, the fiber size fluctuat
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