Central Composite Design of Spraying Process to Laminate the Paper Substrates with Cellulose Nanofibers (CNF) as Green Packaging Wrap

Table 9

Comparison of ordinary experimental data with data from models.

Input variables	Responses	Experimental	Statistical models
CNF suspension concentration (1.25 wt.%)	CNC coat weight (g/m^2)	^a	23.221^a
Fiber diameter ()	Thickness of the CNF coat (μm)	^b	87.51^b
Spray distance ()	Air permeability (μm/Pa·S)	`0.003375^c	0.3^c

^aDue to handling of spray-coated wet CNF on the paper substrates, the fluctuations in coat weight were observed. ^bDue to the movement of spray-coated wet CNF on the paper substrates, the fluctuations in thickness were observed. ^cThe mechanism of drop in air permeance was based on the number of pores in CNF coat on the paper substrates.