Slack Mercerization and its Influence on the Adsorption Properties of OE and Ring-Spun Cotton Yarns.

Researchers investigated the influence of cotton yarn slack mercerization on the adsorption of the cationic surfactant 1-methyl-2-oleyl-3-oleylamidoethyl-imidazolinium-methos ulfate. An experiment mercerized, without tension, raw and bleached cotton yarn

The Effect of Tensile Variation on Warp Yarn Performance.

Seventy percent of yarns produced are converted into woven fabric. Considering the increasingly demanding requirements placed upon the yarns by technological developments, now, more than ever, yarn quality is critical to weaving machine productivity. Mode

Guidelines for Texturising.

In India, textured yarns can be used in applications ranging from light weight dress fabrics (sari) to heavy weight fabrics. Textured yarns include high elasticity/high stretch yarns with 40-60 percent crimp contraction, medium stretch yarns with 30 percent crimp contraction, and low stretch and high bulk yarns with 15 percent crimp contr..

Fiber-Yarn Modeling. The Theory and the Practice.

The two primary approaches used to relate the properties of cotton yarn to those of the constituent fibers are the theoretical analysis of the complex structure of yarn and the use of regression analysis to predict yarn quality. The main tool used in the

First-Class Technique.

Savio introduced the Twist Master, an automated optical sensor that ensures good spindle control and computerized monitoring. The Twist Master offers S or Z twist control identifies stopped spindles, and monitors spindle speed. The Twist Master features modulated infrared signals, self calibration, and autoleveling of all sensors. It prov..

Fault Diagnosis by Expert System for a Filament Yarn Spinning Machine.

Expert systems structure, store, combine, evaluate, and display sets of rules that represent detailed knowledge of the system evaluated. Use of these systems occurs when the answer to a problem is not straight forward and logical from the beginning and when various and often contradicting information can lead to more than one correct solu..

Properties of P/V Fasciated Yarn.

Researchers investigated the properties of polyester/rayon yarns produced by varying the feed ratio, ribbon width, and distance between the first nozzle and the nip of the front roller. Polyester/rayon blended 19.6 tex yarns prepared on a Murata air jet spinning machine produced nine samples for evaluation. An Instron tensile tester measu..

Instabilities in a Yarn Balloon.

Researchers studied the shape changes and lack of constancy in the angular position of the yarn balloon at a given rail height. Researchers concluded that the most significant factors in yarn balloon variability are variances in yarn appearance, such as changes in diameter, hairiness, and surface of the yarn. The smaller variation in yarn..

Artificial Neural Networks and Product Design of Cotton Yarns.

Neural networks, which are mathematical models based on models of biological neural networks, have proved useful for analyzing such aspects of the manufacturing process as monitoring, modeling, and decision making. Researchers have been slow, however, to apply neural network models to the analysis of textile yarn spinning processes. An in..

Predicting processing characteristics of cotton and the yarn properties

In this study use is made of cotton types currently on the German market which are spun within Germany. These include varieties from Central Asia, Russia, Nicaragua, Israel, Cameroon, Argentina, USA, Greece and Burkina Faso. It is found that high bundle strength indicates highy yarn strength, low raw cotton maturity often leads to a highe..