Arrangement for monitoring and controlling webs in packaging mac

Details Arrangement for monitoring and controlling webs in packaging mac Arrangement for monitoring and controlling webs in packaging mac

1984-11-15

1987-07-21

Wan, Gene

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250562, 250571, G01N 2188

Patent

active

046820388

ABSTRACT:
During the monitoring of a web (10) especially a sheet of packaging material (foil), (photoelectric) sensors are used for monitoring the material and positioning. These are accommodated in or on a housing (12) which can be handled as an independent unit. Several monitoring systems for sensing different features of the web (10) or of a tear-open strip (25) are provided in the housing on both sides of a slit (13) open on one side.

REFERENCES:
patent: 4284356 (1981-08-01), Heilman
patent: 4527069 (1985-07-01), Pfizenmaier

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