These include mini offset presses, offset presses with numbering and perforation, both-side printing, two colour non-woven and paper bag printing machines, variable data printing and envelop making ...

The cost of raw material of poly-bags increases and fluctuates with an unpredictable trend. Further, legal restrictions imposed on some types of polythene products adversely affects for the demand. In ...

Department Mechanical Engineering, University of Moratuwa, Kaubedda, Sri Lanka. Department of Textile and Clothing Technology, University of Moratuwa, Kaubedda, Sri Lanka. The cost of raw material of ...