Optimization of Process Parameters for Vertical-Faced Polypropylene Bottle Injection Molding

Table 2

The results of the orthogonal test and the comprehensive weighted score of embryo injection molding of the infusion bottle.

Number	Shrinkage index (%)		Volumetric shrinkage (%)		Residual stress in cavity in the first direction (MPa)		Residual stress in cavity in the second direction (MPa)		Comprehensive weighted score Y
	Value	Score	Value	Score	Value	Score	Value	Score
1	−1.435	48.46	14.25	55.16	46.81	86.65	61.07	78.28	65.94
2	−1.841	62.17	14.44	56.16	48.18	89.19	58.53	75.03	71.76
3	−1.960	66.19	14.13	54.53	49.30	91.26	62.52	80.14	73.43
4	−1.039	35.09	14.36	55.74	51.84	95.96	68.62	87.96	62.72
5	0	0.00	10.22	0	54.02	100.00	74.18	95.09	41.07
6	−2.102	70.99	15.42	71.33	48.42	89.63	53.61	48.72	76.76
7	−2.145	72.44	15.86	73.65	52.92	97.96	78.01	100.00	82.23
8	−1.712	57.82	15.04	79.32	44.78	82.90	60.99	78.18	70.97
9	−2.094	70.72	15.26	80.49	46.62	86.30	67.40	86.40	77.75
10	−1.893	63.93	15.50	81.75	48.89	90.50	69.72	89.37	76.26
11	−1.892	63.90	12.66	36.77	43.99	71.43	53.56	48.66	67.28
12	−2.233	75.41	16.17	85.28	45.87	84.91	59.56	76.35	80.41
13	−2.281	77.03	16.07	84.76	50.07	92.69	73.90	94.73	83.46
14	−2.085	70.42	16.48	86.92	53.76	99.52	76.92	98.60	82.75
15	−2.226	75.18	16.68	87.97	45.64	84.49	70.93	90.92	82.80
16	−2.380	80.38	17.46	92.09	53.80	99.59	55.95	51.72	86.12
17	−2.604	87.94	17.34	91.46	41.50	46.82	55.38	50.99	86.54
18	−2.286	77.20	17.95	94.67	42.65	68.95	60.18	77.14	84.36
19	−1.697	57.31	18.01	94.99	43.60	70.71	67.56	86.60	77.65
20	−0.9201	31.07	17.16	90.51	48.83	90.39	71.95	92.23	66.89
21	−2.961	100.00	18.96	100.00	41.74	47.27	51.38	0	94.31
22	−2.425	81.90	18.88	99.58	43.29	70.14	55.83	51.57	87.76
23	−2.412	81.46	17.95	94.67	45.32	83.89	62.43	80.03	86.85
24	−2.457	82.98	18.38	96.94	40.96	0	61.48	78.81	87.43
25	−2.471	83.45	18.86	99.47	41.14	46.16	64.35	82.49	89.03