A Study on the Influence of Hot Press Forming Process Parameters on Flexural Property of Glass/PP Based Thermoplastic Composites Using Box-Behnken Experimental Design

Table 2

Process variables and their actual values for the coded values in the experimental design.

Process parameters	Levels
	+1 level	0 level	−1 level
(X1) Mould pressure (bar)	10	15	20
(X2) Mould temperature (°C)	200	220	240
(X3) Holding time (min)	2	3	4