PRODUCTION AND QUALITY CONTROL
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Shot times are determined from three factors:
1. VOLUME of void to be filled.
2. Desired IN-PLACE DENSITY.
3. Gun THROUGHPUT.
PROCEDURE:
1. Calculate VOLUME of object to be foam filled.
Example: Volume of Cube = Length x Width x Height
2. Determine desired IN-PLACE DENSITY.
3. Calculate # LBS. REQUIRED to FILL OBJECT (Volume multiplied by the In-Place Density).
Example: Volume = 4 cu. ft., In-Place Density = 2.3 lbs./cu. ft.
# lbs. required to fill part = 4 cu. ft. x 2.3 lbs./cu. ft.
# lbs. required to fill part = 9.2 lbs.
4. Calculate SHOT TIME (# lbs. Required divided by the Throughput).
Example: Throughput = 30 lbs./min., # lbs. Required to Fill = 9.2 lbs.
Convert Throughput from lbs./min. to lbs./sec.
Throughput = 30lbs./min ÷ 1min./60 sec. = .5 lbs./sec.
Example: _9.2 lbs. = 18.4 seconds
.5 lbs./sec.
Shot time = 18.4 seconds
SHOT TIME PROCEDURE
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