How to Measure Your Plastic Bag
Although adding a gusset increases the amount of film required to product your bag, it is often mandatory based on what you are putting in it.
Will this bag be lining a box, holding a carry out container, or filling a trash bin? These are just a few instances when a gusset (side or bottom) may be appropriate for your application.
There are two types of Plastic Bags, Lay-flat (flat) and Gusseted.
There are Three dimensions for each Lay-flat bag.
– Length (L)
The first measurement is the width across the opening of the bag. The second measurement runs from the bag opening to the base of the bag. The Gauge is a measurement of the Thickness of the material an is usually listed in Mils.
Fitting Bags To Containers
For a Round Container
Width: To determine the width of the bag, multiply the diameter of the container by 3.14 and divide by 2. Add 1″ for a looser fit.
Length: For Liners Only: To determine the length of the bag, add 1/2 of the diameter to the length of the container. Add 5″ to this for the total for overhang.
For Tying Bag Only: Same as liners but add 1/2 the diameter to the bag length.
To Line Cartons/Boxes
Add the Width and the Length of the sides. Add 2″ for a looser fit. The total equals the “Flat width” of the bag needed.
Add 1/2 of the Height of the container. Add 5″ for an overhang. This equals the length of the bag needed.)