Dynamics of the Remote and Contact Interaction of Liquid Droplets with Film-Like and Fibrous-Porous Polymeric Materials

Resumo

The problem of inkjet printing quality was considered for the case of synthetic polymer-based film-like and fibrous-porous materials. Physical modeling of inkjet printing on polypropylene using water-based ink revealed remote interaction of liquid droplets with films and nonwoven webs, responsible for the droplet path deviation from the vertical fall and the droplet moving across the polymer film surface after the contact or holding at the fiber ends. Relationships were established and controlling techniques were proposed for the processes of absorption and spreading of liquid droplets in the materials to be printed with the view of increasing the accuracy of printing information symbols and reducing ink consumption.