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7"
8"
9"
10"
11"
12"
13"


.98
1.36
1.82
2.32
2.88
3.44
4.072


14"
15"
16"
17"
18"
19"
20"


4.80
5.60
6.40
7.20
8.16
9.12
10.24


Roll Dia.      Roll Constant
Roll Dia.      Roll Constant
How To Figure Weight Per Roll of Poly
Constant x Roll Width =  Roll Weight

Example:     48" Width Roll  and 10" O.D.
    2.32     x          48  =  111.36 Lbs.
Poly Formulas -  Calculate Weights, Sizes, Etc.
How To Figure Bag Size for Pallet Covers
Add 2" of to length of pallet - add 2" to width - add half of the bag gussett to the height of pallet..  Add 6" for skirt.

Example:     Pallet Size =  48" x 48" x 48"

          48+2 = 50            48+2 = 50     48+25+6 = 79
          Final Bag Size =          50" x 50" x 79"
Use these formulas with care.  Variations in density, dimensional variables, etc., can give differing results.
How To Figure the Bag Size for Carton Liners
Add 2" to carton length - add 1" to the width - add the full gussett to the height of carton.  And 8" for overlap or tie-off.

Example:      Carton Size =        48" x 48" x 48"

          48+2 = 50           48+1 = 49     49+48+8 = 105
          Final Bag Size =          50" x 49" x 105"

How To Figure the Bag Size for Roll Goods
Multiply Roll Diameter times pi (3.14) equals circumference.  Divide circumference in half to get lay flat dimension of the tube.  Add approximately 2" slack to that dimension.  Add the diamter to the length of the roll plus approximately 6" to tie.

Example:       10" dia. roll       60" long

       (10 x 3.14)/2 + 2 = 18           60+10+6 = 76
       Bag Size        18" x 76"
How To Figure the Weight Per Thousand Bags for Flat Bags
Bag width times bag length times gauge divided by constant of 15  = pounds per thousand bags.
Example:          Bag Size 20" x 30" x .00275"

          (20 x 30 x 2.75) + 15 = 110 lbs/thousand bags
How To Figure the Weight Per Thousand Bags for Gusseted Bags
Bag width plus gusset times length, times gauge divided by 15 = lbs/thousand.
Example:      Bag Size  22" x 18" x 45" x .003"

           (22+18) x 45 x 3/ 15 = 360 lbs/thousand