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SAMPLING POINTS AND DAMAGE INCURRED BETWEEN 

 SUCCESSIVE POINTS ON PACKING LINE 



Figure 1. Average number of bruises to Golden Delicious apples incurred between 

 points on eight grading lines. A = at input to the washer. B = output from the dryer. 

 C = on the sizer. D = on the packing table. E = bagging operation. 



2. Unpadded or poorly padded braces and guides. 

 Obstructions in the line. 



3. Mismatched transfers from washer to dewaterer/ 

 waxer. 



4. Fruit to fruit contact or impact required for fruit flow. 



5. No partitioning between parallel-flow brushes. 



6. Long resistance time in washer, dewaterer, and waxer 

 (low slope angle, fruit contact required for flow). 



7. Fruit hit dryer rollers too fast after leaving the waxer. 

 Sampling Point C : 



1. Unpadded plates and rollers. 



2. Dried wax on padded surfaces caused surfaces to be 

 rough and hard. 



3. Mistimed singulator to sizer transfer (fruit hit cup or 

 bounced). 



4. No timing for transfer of fruit from singulator to sizer. 



5. No transfer plate at singulator-to-sizer transfer. 



6. Fruit-to-fruit impact. 



7. Excess fruit on singulator fell onto hard surfaces in 

 recycling line. 



8. Hard cup surfaces on the sizer. 

 Sampling Point D : 



1. Excessive belt speeds or sizing cone speeds in sizer. 



2. Excessive drop distance from sizer cup to cross con- 

 veyor. 



16 



