Effect of Melt Temperature and Hold Pressure on the Weld-Line Strength of an Injection Molded Talc-Filled Polypropylene

Table 1

Weld-line tensile properties of talc filled polypropylene at different processing conditions.

Melt temperature; (°C)	Hold pressure; (MPa)	Modulus; (GPa)	Yield strength; (MPa)	Yield strain; (%)	𝑚	𝛽; (1/MPa)
209	55.2	6.56 (±0.23)	17.5 (±0.31)	0.79 (±0.04)	2.81	113
232	55.2	6.84 (±0.19)	17.9 (±0.40)	0.91 (±0.04)	2.79	90.4
277	55.2	6.94 (±0.20)	19.1 (±0.34)	1.00 (±0.07)	2.57	28.2
232	27.6	6.71 (±0.24)	17.1 (±0.23)	0.86 (±0.04)	2.87	149
232	82.7	6.92 (±0.20)	22.5 (±0.30)	1.31 (±0.03)	2.32	6.9