Preparation and Sealing Processing of Sodium Alginate Based Blending Film

Table 1

Film sealing experiment design with coded and real values for adhesive concentration, sealing temperature, and sealing pressure along with response variable of seal strength.

Trial number	Independent variables						Response variable
	Coded values			Real values
				Adhesive concentration; (%)	Sealing temperature; (°C)	Sealing pressure; (MPa)	Seal strength; (N/15 mm)
1	1	1	1	26	155	0.35	21.33
2	1	1	−1	26	155	0.25	24.66
3	1	−1	1	26	145	0.35	23.13
4	1	−1	−1	26	145	0.25	19.23
5	−1	1	1	22	155	0.35	20.13
6	−1	1	−1	22	155	0.25	24.09
7	−1	−1	1	22	145	0.35	18.16
8	−1	−1	−1	22	145	0.25	20.17
9	1.682	0	0	27.364	150	0.3	19.81
10	1.682	0	0	20.636	150	0.3	16.50
11	0	1.682	0	24	158.41	0.3	23.04
12	0	1.682	0	24	141.59	0.3	21.67
13	0	0	1.682	24	150	0.384	20.63
14	0	0	1.682	24	150	0.216	23.36
15	0	0	0	24	150	0.3	25.35
16	0	0	0	24	150	0.3	24.93
17	0	0	0	24	150	0.3	25.56
18	0	0	0	24	150	0.3	24.20
19	0	0	0	24	150	0.3	24.82
20	0	0	0	24	150	0.3	24.20