Method for selectively controlling the amount of wax applied to

Details Method for selectively controlling the amount of wax applied to Method for selectively controlling the amount of wax applied to

1995-07-18

2000-11-28

Beck, Shrive

Coating processes

Measuring, testing, or indicating

427421, 118668, 118713, B05D 102

Patent

active

061532533

ABSTRACT:
Application of wax to fruit in a conveyor system is controlled to optimize the protective and cosmetic effects of the wax application and to efficiently utilize the wax notwithstanding variations in size, texture, nature or number of the fruit, the type(s) of wax or the processing environment by providing an intelligent wax controller. The wax controller has a camera which detects fruit passing through a field of view defined by an optical housing in which the camera is fixed. Two-dimensional pixel maps of the fruit passing through the viewing area are assembled and an image is processed to provide distinct pixel images even when the fruit are touching. The diameter of the fruit for each of the separated images is then determined from which the total surface area of the fruit passing under the viewing area is computed. Based on this computation a plurality of variable stroke pumps and wax nozzles are each individually controlled at appropriate positions across the conveyor system to apply the appropriate amount of wax to the fruit then passing under the wax applicator nozzles.

REFERENCES:
patent: 3924381 (1975-12-01), Sardo
patent: 4477483 (1984-10-01), Lewis
patent: 4693378 (1987-09-01), Azegami et al.

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