Table 1.

Literature reference values and LFI estimated values for n and k for the three homogeneous plastics. For source of literature values see [11].

	Lit. n	LFI n	Lit. k	LFI k
HDPE	1.54	1.54	0.002	0.006
PC	1.62	1.62	0.01	0.02
HDPE Black	1.58	1.58	0.02	0.02