Laser beam imperfection detection for plastic film rolls

Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Signalling – indicating – or display means

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Details

209579, 250563, 250572, 2503581, 356237, B07C 500

Patent

active

043867073

ABSTRACT:
A system for non-destructive, non-contacting use for detecting imperfections in multi-layered supply rolls of wound plastic film comprises a laser which scans the length of the particular roll being inspected with a photo-electric detector at a fixed reference angle which picks up reflected unimpeded and scattered light plus associated indicating and/or recording equipment. Defects in the roll, particularly those related to the upper longitudinal surface thereof, cause light scattering which decreases the signal strength to the indicator or recorder, thus noting the presence of a wrinkle or the like imperfection in the film roll.

REFERENCES:
patent: 3565536 (1971-02-01), Wuellner et al.
patent: 3652863 (1972-03-01), Gaskell et al.
patent: 3690774 (1972-09-01), Kottle et al.
patent: 3804534 (1974-04-01), Clarke
patent: 3812349 (1974-05-01), Gugliotta
patent: 3843890 (1974-10-01), Anthony, Jr. et al.
patent: 4136779 (1979-01-01), Bieringer
patent: 4162125 (1979-07-01), Schmidt
patent: 4208126 (1980-06-01), Cheo et al.

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