Priya Ravish Mehra’s participation at the Kochi-Muziris Biennale unravels a rare technique of woven tapestries, combining fragments of discarded weaves with paper pulp.    Priya’s experimentation with fibres has its roots in her childhood in Najibabad, a town in Uttar Pradesh. Local rafoogars, or darners, regularly brought antique shawls from Kashmir and other precious fabrics to her…