The process of lamination can be monitored by the use of fiber optics coupled with Fourier transform infrared (FT-IR) spectrometry. During the process, the effects of temperature and pressure on the laminate and fiber can be followed. Problems related to the temperature, stripping, and pressure on the fiber have been addressed. Temperature has virtually no effect on the fiber up to about 350°F. Stripping the fiber using the manufacturer's recommended method was detrimental to the surface of the fiber. Pressure (up to about 400 psi) on the fiber was not a problem unless the coating of the fiber was removed by the prescribed method.
Jennifer E. Andrews,
James A de Haseth,
"Fiber Optic FT-IR Spectrometry Of Laminates", Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); doi: 10.1117/12.969556; https://doi.org/10.1117/12.969556