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In the melt-spinning of filaments molten polymer is extruded downwardly through circularly arranged holes of a spinneret to form a circular group of filaments. Quench gas and finish liquid are conducted downwardly through the spinneret in alignment with a longitudinal axis defind by the filament gro

In the melt-spinning of filaments molten polymer is extruded downwardly through circularly arranged holes of a spinneret to form a circular group of filaments. Quench gas and finish liquid are conducted downwardly through the spinneret in alignment with a longitudinal axis defind by the filament group and are directed outwardly through the filament group. The filaments exhibit vibration during travel from the spinneret to the lower guide. The filaments are passed through and against a circular guide surface disposed around the filament group below the finish spray and above the lower guide. As a result, the filaments are deflected inwardly, in mutually spaced relationship, toward the longitudinal axis, whereby the amplitude of vibration of the filaments is reduced. The filaments are passed between walls extending upwardly from the guide surface and surrounding the filament group. Finish liquid is sprayed against the walls so that a finish environment is confined between the walls. The guide may comprise relatively movable members which close around the filament group to define a continuous guide surface.

대표청구항 ▼

In a melt-spinning process of the type wherein molten polymer is extruded downwardly through annularly arranged holes of a spinneret to form an annular group of filaments, quench gas is directed from within the filament group and outwardly therethrough, finish liquid is sprayed from within the filam

In a melt-spinning process of the type wherein molten polymer is extruded downwardly through annularly arranged holes of a spinneret to form an annular group of filaments, quench gas is directed from within the filament group and outwardly therethrough, finish liquid is sprayed from within the filament group and outwardly therethrough beneath the quench gas, the filaments are gathered and redirected at a lower guide means, and the filaments exhibiting vibration during travel from the spinneret to the lower guide means, the improvement comprising the step of passing the filaments through an upper annular guide means disposed around the filament group below the finish spray and above the lower guide means but no higher than the freeze point of the filaments such that the upper guide means is lubricated by the finish spray and the filaments are contacted and acted inwardly upon by a surface of the upper guide means and deflected thereby, in mutually spaced annular relationship, toward a longitudinal axis defined by the filament group such that a diameter defined by the filament group passing through said upper guide means is smaller than a diameter defined by said filament group emerging from said spinneret, whereby the filaments are suppported between the spinneret and the lower guide means to reduce the amplitude of vibration of the filaments.