4.1 Shrink Wrapping Example
Shrink wrap Finished Sheets and include the cost of the shrink wrap film.
Specifications:
Wrap 500 sheets per package at a rate of 120 packages/hour. Shrink wrap film based on cost per linear inch (film purchased in a roll of 2000 ft. in length x 16 inches wide.
The setups in Standards for the Shrink Wrapping Example are shown in following screens.
Figure 4.1-1
Shrink Wrap Example, Postpress Process
Comments (Fig. 4.1-1):
1. Setup is based on 500 finished sheets / package. Alternately, the process could be based on package depth. For this, set “Inches/cycle” and the system would calculate sheets/package based on the stock caliper.
2. Rate is 120 packages per hour.
Figure 4.1-2
Shrink Wrap Example, Shop Standards, Material
Comments:
1. Assumption: 2000 ft. of shrink-wrap film x 16 inches wide = $75.00. Cost per linear inch = $0.003, however, material used when shrink-wrapping a package will be approximately 2.5 x the package dimension = $0.0075.
2. Could set up on a cost per square inch basis.
The screen displays in Estimating/Order Entry for the Shrink Wrapping Example follow:
Figure 4.1-3
Shrink Wrap Example, Estimating/Order Entry, Layout Tab
Comment (Fig. 4.1-3):
Shrink wrap material calculation will be based on “Untrim / Sig Flat” size – ‘across cylinder’ (W) x ‘around cylinder’ (L). Material in the shrink wrapping example will use the “L” dimension.
Figure 4.1-4
Shrink Wrap Example, Estimating/Order Entry, Postpress Labor
The analysis report for the Shrink Wrapping Example follows:
Figure 4.1-5
Shrink Wrap Example, Estimating/Order Entry, Analysis Report
Comments (Fig. 4.1-5):
1. Packages =10000 sheets/500 per package = 20.
2. Labor: 20 packages x 0.5 min. each + 10 min. set up = 20 min. = 0.33 hrs.
3. Matl: 20 packages x 8.5 in. (L) = 220 in. @ $0.0075 per linear inch = $1.65