Method for monitoring surface texture and quality for moving tra

Details Method for monitoring surface texture and quality for moving tra Method for monitoring surface texture and quality for moving tra

1985-12-05

1987-12-29

Rosenberger, R. A.

Optics: measuring and testing

By monitoring of webs or thread

356430, 356239, G01N 2184

Patent

active

047157178

ABSTRACT:
The surface texture of a moving transparent film is determined by applying a beam of collimated electromagnetic radiation at an angle of incidence sufficient to produce detectable backscattered radiation; collecting the backscattered electromagnetic radiation while avoiding specularly reflected radiation; and evaluating the intensity of the collected radiation for two components, a first component corresponding to the haze percent of the film and arising from the scattering of the collimated electromagnetic radiation by microscopic and submicroscopic features of the film surfaces, and a second component produced by the scattering of the collimated electromagnetic radiation by macroscopic surface blemishes, gouges and gel-like particles on each surface of the transparent film.

REFERENCES:
patent: 3166627 (1965-01-01), Shaw, Jr.
patent: 3336833 (1967-08-01), Villers
patent: 4072426 (1978-02-01), Horn
patent: 4184082 (1980-01-01), Peoples
patent: 4363966 (1982-12-01), Cheo
patent: 4610541 (1986-09-01), Tanimoto et al.

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