The development of textile products is associated with high material, time, personnel and cost expenditure. Up to now, the development process follows an empirical approach based on the know- how of long-standing experts. Yet this expert knowledge is hardly documented, and given the shortage of skilled workers in the textile industry the long-term transfer of knowledge is at risk. The paper describes the digital twinning for materials and processes and their application in a digital product development process, which can accelerate the ramp-up phase and thus reduce development costs by up to 60%.<\/p>\n