The delivery of quality flexible packaging to the marketplace efficiently and profitably requires the design and manufacture of products that are both âfit-to-useâ and âfit-to-makeâ. The engineering function in a flexible packaging enterprise must attend to these dual design challenges.
Flexible Packaging discusses the basic processes used to manufacture flexible packaging products, including rotogravure printing, flexographic printing, extrusion lamination/coating; and finishing/slitting. These processes are then grounded in the machines used to practice, emphasising the basics of control systems for the machines, and covering options intended to minimize waste and unproductive time between production jobs.
Raw materials are considered, including the three basic forms of Rollstock (paper, foil, plastic films); Resin; and Wets (inks, varnishes, primers). Guidance is given not only on material selection, but also on adding value through enhancement or modification of the materialsâ physical features.
A âmeasuresâ section covers both primary material features â such as tensile, elongation, modulus and elastic and plastic regions â and secondary quality characteristics such as seal and bond strengths, coefficient of friction, oxygen barrier and moisture vapour barrier.