APPARATUS FOR COATING A TUBE OF FIBER MATERIAL WITH VISCOSE BY EXTRUSION

摘要

This invention relates to an apparatus for coating a tube of fiber material with viscose, comprising an annular slot die and a backing element spaced therefrom to form a cylindrical passage having a width of 0.3 to 1.0 mm through which the tube can be passed, the slot in the die being directed transversely with respect to this passage and having its exit into this passage at a distance of at least 2 mm from the tube entry of this passage and of at least 2 mm and at least three times the width of said passage from the tube exit of this passage.