Handy Math > Metric 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: 55.88 cm 50.8 µm (micrometer / micron) 40.64 cm od rolls 31.75 kg 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 73.66 cm cutoff 3,309 packages from 2 rolls of film @ 31.75 kg per roll Step 1: measured cutoff = 55.88 cm Step 2: 3,309 packages from 63.5 kg of film  ( 2 rolls X 31.75 kg / Roll) Step 3: weight per 1,000   packages  = 19.331 kg / 1,000 Step 4: 63.5 kg ÷ 19.331 kg  / 1,000 = 3,284 "theoretical yield" from 63.5 kg film Step 5: compare actual (3,309) to theoretical (3,284) In this example, the yield is practically perfect and there were 25 "free" packages from "light film". Weight (kg) per 1,000 Packages Calculator:      Width (cm):    Cutoff (cm):       Gauge (µm):                     Weight:  kilograms per 1,000 packages                                    Theoretical Yield Calculator Weight: kilograms per 1,000 packages Number of Kilograms per Roll (kg): Number of Rolls: Theoretical Yield:  packages

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