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 |
