FiberVisions uses two production processes --- long-spin and short-spin --- to offer
tailored products of the best possible quality.

Polyolefin fibers are manufactured by melt spinning, similiar to the methods used for
polyester and polyamide fibers. The spinning step is designed to create uniform fibers
and impart porperties such as fiber dtex, bondability,softness and process ability in
downstream processes. [More]

In spinning, the polymer resin and other ingredients (primarily stabilizers, pigments, and
melt modifiers) are fed into a screw extruder, melted and extruded through fine diameter
holes. The plate containing the holes is commonly called a spinneret. A metering pump
and a mixing device are usually installed in front of the spinneret to insure uniform
delivery and mixing to facilitate uniform drawdown at high speeds.

In the traditional or long-spinning process, the fiber is pulled down a long cooling stack-
type quench chamber by a take-up device at speeds in the range of 50-2000 m/min or
more and discontinously route to downstream finishing operations.

In the short-spinning process, filaments are cooled within a few centimeters of the
spinneret at speeds of 50-150 m/min. Because of the lower speeds, fiber can be
continously routed to downstream finishing operations in a one-step process.

Finishing operations include drawing the fiber to six times its original length,
heat treatment to releave internal stresses and texturizing processes, which are
combinations of deformational and heat treatments. The treatments were developed to
impact specific characteristics to the olefin fiber appropriate for its end use. [More]