The Feasibility Study for Solvent Based White Ink for Flexible Packaging

The research proposes to find an optimum ratio of solvent based white ink for flexible package

development by studying and comparing the qualification of white ink on plastic film. The process

consists of separating the white ink ratio into 5 sampling group ratios and then examining ink quality

by its’ solid content and grinding. The viscosity is controlled in 16 second and then measured by

Zahn’s cup no. 3. The sampling ink is printed and inspected printing quality by (1) ΔE*ab and opacity

on polyethylene terephthalate ( PET) plastic film and oriented polypropylene (OPP) and ( 2) bond

strength by extrusion. The result shows that sampling ink with hardener substances and ink and

varnish ratio is at 90: 10 certifies in all aspects compare with other sample. Indicators are the net

present value (NPV) , Benefit/ Cost Ratio: B/ C Ratio, Pay Back Period and internal rate of return of

investment ( IRR) . The Feasibility Study found that the projects are the net present value (NPV) of

5,053,593 baht, payback period of 1 year 8 month and rate of return on investment ( IRR) was

54.79 %. B/C ratio = 1.25