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

Table 2

Design of experiments.

Std.	Run	Factor 1	Factor 2	Factor 3	Response 1	Response 2	Response 3
		: suspension concentration	: fiber diameter	: distance between spray gun and surface	Basis weight	Thickness of coat	Air permeability
		wt.%	nm	cm	Gram per square meter	Microns	Microns/(Pascal·second)
19	1	1.125	45	40	14.691	74.48	0.003375
7	2	0.605	59.865	45.95	3.65	44.6	1.056
2	3	1.645	30.135	34.05	30.34	80.91	0.003
1	4	0.605	30.135	34.05	3.56	44.74	0.7809
8	5	1.645	59.87	45.95	30.92	93.33	0.006
15	6	1.125	45	40	14.691	74.48	0.003375
20	7	1.125	45	40	14.691	74.48	0.003375
10	8	2	45	40	30.67	85.97	0.003
12	9	1.125	70	40	29.37	87.33	0.003
14	10	1.125	45	50	20.63	65.68	0.0123
9	11	0.25	45	40	1.425	23.99	2.564
3	12	0.605	59.865	34.05	3.426	41.88	0.97
17	13	1.125	45	40	14.691	74.48	0.003375
18	14	1.125	45	40	14.691	74.48	0.003375
13	15	1.125	45	30	14.567	75.57	0.0567
11	16	1.125	20	40	12.456	25.78	0.003
5	17	0.605	30.135	45.95	3.322	43.8	0.987
4	18	1.645	59.865	34.05	35.37	88.91	0.003
16	19	1.125	45	40	14.691	74.48	0.003375
6	20	1.645	30.135	45.95	30.654	81.46	0.0115