Table 3.

Diffusion coefficients for a series of polymer films (cm²/s) at 50 °C, 65 °C and 75 °C.

T [°C]	Diffusion coefficient [×10−11 cm2 s−1]
	corona PET (type A)	corona PET (type B)	chemPET	PE transparent	PE white	cPP
50	0.16	0.48	0.33	0.32	0.08	0.17
65	0.85	2.20	1.10	0.83	0.11	0.33
75	1.81	2.86	1.68	2.90	0.83	0.42