Abstract
The biaxial tensile properties of single tricot warp knitted fabrics with an open lap have been calculated theoretically by developing the analysing method used on the close lap structure. [1-2]. In the new developed method, tensile process is divided into two regions, i.e., bending effective region and stretching effective region. The boarder of thesse two regions is critical stretch ratio. The properties in these regions are analysed separately. The analysed results thus obtained are composed. This analysis takes, as the initial conditions, of calculation fabric structure and yarn properties, that is, tensile and frictional properties.
Both experimental and theoretical researches using some of actual fabrics have been carried out, for the purpose of comparison, with good agreement. The effect caused by fictional properties of yarn can be neglected in the bending effective region.
Differences in this biaxial tensile properties between close and open laps have been investigated by using the theories.
