Method and apparatus for dry spinning spandex

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion

Patent

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Details

26421112, 26421117, 425 722, 425377, 4253782, 4253822, 425464, D01D 402, D01D 504, D01F 678

Patent

active

053873874

ABSTRACT:
A method utilizes a hot inert gas flow in an elongated upright heated tube (A) driving off the solvent carrying polymer forming filaments by arranging spinnerettes (B) each forming a bundle of filaments positioned at an upper end of the elongated upright heated tube and providing a horizontal cross-section in the tube corresponding to the spinneret plate (C) and providing an inlet (D) for distributing the hot inert gas flow about the spinnerettes into the tube and delivering the filaments through a slot (E) at the bottom of the tube (A) for winding as upon a beamer or cop winder (F).

REFERENCES:
patent: 3111368 (1963-11-01), Romano
patent: 5002474 (1991-03-01), Hoekstra

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