Table 1.

Process plan comparison.

Performance parameter	Original plan	Scheme 1	Scheme 2	Scheme 3
Melting temperature (°C)	240	240	240	210
Mold temperature (°C)	90	90	90	90
Injection time (s)	4	4	4	4
Injection + holding pressure + cooling time (s)	48	48	48	42
Maximum holding pressure (MPa)	80	100	100	80
Holding time (s)	20	20	25	20
Warpage (mm)	0.373	0.209	0.199	0.405
Sink mark (mm)	0.186	0.077	0.078	0.176
Scheme variables	—	Increase the holding pressure	Pressurize, extend the holding time	Reduce melt and mold temperature