Abstract: In order to remain the color information of digital image during grey simulative design of jacquard fabric, this paper come up with a new method of grey simulative effect digital jacquard fabric with multi-weft yarns. Applying to layered-combination mode, full-color weave points and weave structure, colorful digital pattern can be directly used in grey simulative jacquard fabric, and using multi-weft grey yarns, grey simulative fabric based on colorful digital pattern can be done. Moreover, the fabric structure has kept color information. Using colorful yarns, the color of the pattern can be simulated in the meantime. This method meets the requirement of simulative digital pattern in fabric, and the process, which can do the business of massive production system, opens up the field of digital jacquard fabric design innovation.

Key words: multi-weft yarn, grey, simulation, colorful pattern, jacquard fabric