Method for forming fibers

Details Method for forming fibers Method for forming fibers

2011-05-10

2011-05-10

Tentoni, Leo B (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

C264S177130, C264S210800, C264S211140

Reexamination Certificate

active

07939010

ABSTRACT:
An improved method for creating fibers from a material dissolved in a solvent. In one embodiment, the method includes the steps of feeding a fiber making material dissolved in a solvent through a die including at least two rows of nozzles to form fiber strands. An attenuation medium is provided about the fiber strands. The attenuation medium is provided in a direction that is generally parallel to the fiber strands such that the attenuation medium elongates the fiber strands. The attenuation medium has a relative solvent-vapor content of at least about 50 percent.

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