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

Table 6

Response 1: basis weight.

Source	Sum of squares	df	Mean square	value	value
Model	2020.80	3	673.60	41.60	≤0.0001	Significant
: suspension concentration	1933.79	1	1933.79	119.42	≤0.0001
: fiber diameter	84.33	1	84.33	5.21	0.0365
: distance between spray gun and surface	2.68	1	2.68	0.1653	0.6897
Residual	259.10	16	16.19
Lack of fit	259.10	11	23.55
Pure error	0.0000	5	0.0000
Cor total	2279.90	19

Factor coding is coded. Sum of squares is type III-partial.