Avtex Fibers

Fig. 12.6. Steeping of cellulose in the manufacture of viscose rayon. (Courtesy Avtex Fibers, Inc.)...

Regenerated Cellulose An attempt was made to fibrillate a regenerated cellulose (1.5 denier 1-9/16 in bright Fiber 40 Rayon from Avtex Fibers Incorporated). The procedure described above was tried, but failed to fibrillate the rayon even after 10 h. Intermittent treatment of the mixture in a strong ultrasonic field did not appear helpful, and Fiber 40 rayon was not tested further. 

Selevan S, Jones J. 1988. Walk-through survey. Report, Avtex Fibers, Inc., Front Royal, Virginia, July 14-15, 1977. Government Reports Announcements and Index (GRA I), Issue 24, 1988... 

The Viscose method mentioned earlier was finally worked out in 1894 by English chemists Charles Frederick Cross, Edward John Bevan, and Clayton Beadle. This method was a commercial success, and the fabric was manufactured first by Courtaulds Fibers in the United Kingdom and then Avtex Fibers in the United States. 

A manufactured cellulosic fiber (which we now call rayon) was first invented in France in 1884. But it was not produced commercially until Avtex Fibers marketed it in 1910. This fiber was not the first truly synthetic fiber because it is produced from wood cellulose. However, it was the world s first manufactured fiber. 

Process conditions that favor chemical crimp formation are similar to those used for improved tenacity staple (2inc/modifier route). However, spin bath temperature should be as high as possible (ca 60°C) and the spin-bath acid as low as possible (ca 7%). Attempts have been made to overcome some of the leanness of high strength rayons by increasing the crimp levels. ITT Rayonier developed the Prim a crimped HWM fiber (36) and made the process available to their customers. Avtex developed Avdl 111. Neither remain in production. 

Avtex supplied continuous rayon fiber to Highland Industries for weaving... 

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