Trial spinning is described through analysis on the spinnability of trivoltine cocoon waste material, which can produce ultrafine spun silk yarn due to its excellent spinnability.

对三纺原料的特性进行了可纺性分析，绍了其试纺情况。试纺结果表明，三纺原料有良好的可纺性，并达到纺超高支丝的目的。