Handy Math > English Units > Yield Auditor > FORMING A PACKAGE with One Roll on Top and One Roll on Bottom

FORMING A PACKAGE with One Roll on Top and One Roll on Bottom

Complimentary Slide Rule ca. 1976

Example: Here is a nearly perfect scenario: 22" 2 mils 16" od rolls 70 pounds per roll No footage marked on roll tags one roll on top one roll on bottom 2 rolls of shrink film in a heat-sealed pass through fashion 29" cutoff 3,309 packages from 2 rolls of film @ 70 pounds per roll Step 1: measured cutoff = 29"  Step 2: 3,309 packages from 140 pounds of film ( 2 rolls X 70 # / Roll) Step 3: weight per 1,000   packages  = 42.53 # / 1,000 Step 4: 140 # ÷ 42.53 # /1,000 = 3,291"theoretical yield" from 140 # film Step 5: compare actual (3,309) to theoretical (3,291) In this example, the yield is practically perfect and there were 18 "free" packages from "light film". Weight per 1,000 Packages Calculator:      Width (in.):    Cutoff (in.):   Gauge (mil):                    Weight: pounds per 1,000 packages                                    Theoretical Yield Calculator Weight: pounds per 1,000 packages Number of Pounds per Roll (lb): Number of Rolls: Theoretical Yield:  packages

back to top of page