Calculation
| One percent of the plastic molded per year | 5,000,000 lb x 1 percent x $1.50 per lb = $75,000 |
| Plastic no longer scrapped | $75,000 x 0.4, for 0.4 percent of the plastic = $30,000 |
| With the press time and labor in those parts | $30,000 + 20 percent = $36,000 |
| Less a technician's time to keep the settings | 120 hours per year x $52 per hour = $6,200 |
| What fixing it could save per year | $36,000 - $6,200 = $29,800 |
Assumptions
| Value | ||
|---|---|---|
| Scrap no longer made, as a share of all plastic molded | 0.4 percent | |
| Press time and labor in a scrapped pound, on top of its plastic | 20 percent | |
| Time a process technician spends keeping the settings | 120 hours per year | |
| Time a process technician needs to test one mold | 24 hours per mold | |
| Fee for one technician on a course in setting a press | $3,500 | |
| Pressure sensors for one mold, with their monitor, installed | $20,000 | |
| Resin molded per year | 5,000,000 lb | |
| Price of resin | 1.5 $/lb | |
| Cost of one process technician hour | $52 per hour |
Scrap no longer made, as a share of all plastic molded
0.4 percent
Press time and labor in a scrapped pound, on top of its plastic
20 percent
Time a process technician spends keeping the settings
120 hours per year
Time a process technician needs to test one mold
24 hours per mold
Fee for one technician on a course in setting a press
$3,500
Pressure sensors for one mold, with their monitor, installed
$20,000
Resin molded per year
5,000,000 lb
Price of resin
1.5 $/lb
Cost of one process technician hour
$52 per hour