1. Vacuum heat setting for sewing thread, silk, filament, cotton yarn, cashmere, ... silk, acrylic tow, printing tops etc. Functions and features 1. Vacuum heat setting for sewing thread, silk, filament, cotton yarn, cashmere ... , preshrinking. Main technical parameters Operating temperature: 65~110°C Max. vacuum: 90% Working pressure: -0.1MPa~0,handling time: 30~60min ...