Most used poly bags in garments industries are PP (polypropylene) poly bags, PE (polyethylene) & LDPE (low density polyethylene), HDPE (high density polyethylene) etc. Basically there’re three different ways to measure poly bags thickness. These are:
(1) Mil (1 mil = 1/1000 of an inch)
(2) Microns (1 microns = 1/1000 of a mm)
(3) Gauge (1 gauge = 1/100000 of an inch)
Conversion, 1 mil = 25 microns = 100 gauge.
Note: Gauge is the most used system of counting poly bags’ thickness worldwide.
A poly bags having length 30 inches, flap 3 inches, width 16 inches, poly thickness 150 gauge. Now find out weight of 1000 pcs poly bags? Answer: {(30 + 1.5) x 16 x 150 / 3300} = 22.91 KGs for 1000 pcs
Formula: KGs needed for 1000 pcs poly bags = {(length + half flap) X width X gauge / 3300}
Now, if we want to find out weight of 1 pcs poly bag, then we need divide the outcome with 1000.
Answer: 22.91 / 1000 = 0.023 KGs. (1 pcs poly bag weight)
Note: You see, I count flap measurement in half (1.5 inches) during calculation because flap is single layer. And length, width of a poly bag is double layer.
Now the question is 1 lbs. polymer price is 0.40 USD, find out cost of 22.91 KGs polymer?Answer: 22.91 x 2.2 x 0.40 = 20.16 USD. (1 KG = 2.2 lbs.)
A poly bags having length 30 inches, flap 3 inches, width 16 inches, poly thickness 150 gauge. 1 lbs. polymer price is BDT 40. Now find out cost of 1 pcs poly bag? Answer: {(30 + 1.5) x 16 x 150 / 3300 / 1000 x 2.2 x 40} = 2.01 BDT. (Bangladeshi Taka).
(1) Mil (1 mil = 1/1000 of an inch)
(2) Microns (1 microns = 1/1000 of a mm)
(3) Gauge (1 gauge = 1/100000 of an inch)
Conversion, 1 mil = 25 microns = 100 gauge.
Note: Gauge is the most used system of counting poly bags’ thickness worldwide.
A poly bags having length 30 inches, flap 3 inches, width 16 inches, poly thickness 150 gauge. Now find out weight of 1000 pcs poly bags? Answer: {(30 + 1.5) x 16 x 150 / 3300} = 22.91 KGs for 1000 pcs
Formula: KGs needed for 1000 pcs poly bags = {(length + half flap) X width X gauge / 3300}
Now, if we want to find out weight of 1 pcs poly bag, then we need divide the outcome with 1000.
Answer: 22.91 / 1000 = 0.023 KGs. (1 pcs poly bag weight)
Note: You see, I count flap measurement in half (1.5 inches) during calculation because flap is single layer. And length, width of a poly bag is double layer.
Now the question is 1 lbs. polymer price is 0.40 USD, find out cost of 22.91 KGs polymer?Answer: 22.91 x 2.2 x 0.40 = 20.16 USD. (1 KG = 2.2 lbs.)
A poly bags having length 30 inches, flap 3 inches, width 16 inches, poly thickness 150 gauge. 1 lbs. polymer price is BDT 40. Now find out cost of 1 pcs poly bag? Answer: {(30 + 1.5) x 16 x 150 / 3300 / 1000 x 2.2 x 40} = 2.01 BDT. (Bangladeshi Taka).
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