Thesis Details


Thesis Title: The relationship between air jet spinning parameters and air jet yarn structure and the resulting impact on air flow at the air jet weaving machine
Thesis Author: Phillip Stocks
Abstract: Researchers have studied the impact of yam characteristics such as count, blend, and twist level on insertion times and air flow requirements at air jet weaving. However, no research has been conducted to determine the relationship between air jet spinning parameters and yarn structure, and the resulting air flow at the air jet weaving machine. A screening experiment was conducted to identify the spinning parameters which most impacted air flow at the air jet weaving machine. The parameters studied were apron spring pressure, Nl nozzle pressure, N2 nozzle pressure, feed ratio, main draft, N2 nozzle guide, and spinning speed. The yams were spun on a Murata 802H spinning frame and woven on a Sulzer Rilti L5200 weaving machine with the Automatic Pressure Control (APC) activated. All yarns were 35 Ne, 50/50 polyester/cotton blend. In the screening experiment, the parameters which most impacted air flow at the air jet weaving machine were apron spring pressure, N2 nozzle pressure, and N2 nozzle guide. Due to the impact of apron spring pressure, N2 nozzle pressure, and N2 nozzle guide, these parameters were incorporated into an 18 condition main experiment. The air flow at the air jet weaving machine was recorded for each yarn condition. The results indicate that apron spring pressure and N2 nozzle pressure have a statistically significant impact on air flow at the air jet weaving machine.