Figures 5-7 show the effects of the angle between the slot and the axis of the spinneret
, the width of the die head, and the width of the slot on fiber diameter.
As soon as it comes out of the spinneret
, a UV light cures the resin-soaked fiber with pinpoint accuracy and hardens it into a sturdy little rod," explain the manufacturers, who are set to display the invention at the Hannover Fair technology trade show later this month.
She then either attached her dragline to the vertical wire or continued to descend to the horizontal, bottom wire frame where she attached the dragline, touching her spinnerets
repeatedly on the side of the wire facing the web or on the side away from the web.
Much of the commercial rayon manufacturing utilizes the "viscose" process, in which the purified cellulose is converted to xanthate, the xanthate dissolved in dilute caustic soda and the cellulose regenerated from the product as it emerges from the spinneret
of Naples, Italy, which is using the screws with DSM Xplore's new lab-size fiber spinneret
to reinforce PET fibers with carbon nano-tubes.
The second stage includes the fibres forming through the spinneret
Man-made fibers are formed by forcing a liquid through tiny holes in a device called a spinneret
After 18 years at DuPont, pursuing the daily routine of creating one or another polymer, melting it into a liquid, and asking a technician to turn it into fibers with a machine called a spinneret
, Kwolek made an odd but exciting discovery.
What goes into the spinneret
as soluble liquid protein somehow emerges as an insoluble, nearly waterproof, highly ordered fiber.
In the center of each spinneret
is the opening of a tiny tube.
In this process, polymer granules--usually made by specialist producers rather than fibre companies--are fed to an extruder, which melts the polymer and then pumps it through a spinneret
In our analysis, it comes out sort of in between the older one that hadn't developed the spinneret
and modern spider that has lost the tail.