Development and Experimental Validation of Nonlinear Models for High-Speed Yarn Transport Systems.

To develop nonlinear models for high speed yarn transport system, researchers are investigating models for textile processes that involve rotating balloons, including unwinding from cylindrical or conical yarn packages, ring twisting and winding, and two-for-one twisting. Analyses will consider yarn elastic deformatin, tension, and balloo..

Micropolyester-Cotton Blend.

Researchers tested the effects of carding, combing, and ring spinning on the strength and evenness of micropolyester/cotton ring spun yarns. Compared with S cotton, DCH-32 cotton provided better strength and evenness in the micropolyester/cotton blend. When carding the micropolyester fiber, a lower cylinder speed and wire points R-2520 X ..

Spinning Jute, Jute Blends.

Conventional slip draft sliver spinning of jute fibers occurs via either two-legged flyer sliver spinning or apron control slip-draft tubular flyer sliver spinning. These methods, however, are not suitable for manufacturing very fine count yarns. Finest yarn counts achievable on the two legged slip draft and apron draft systems are approx..

Angora-Rayon Blends.

Blending viscose rayon with rabbit hair improved spinnability. Increasing the percentage of rayon in the blend improved the strength of the blend. A 75/25 rayon/rabbit hair blend resulted in maximum fiber strength. Rayon offered better cohesiveness than did rabbit hair, allowing more twist to be inserted in the blended yarn during spinnin..

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