Adhesive consumed – 100 kg
Laminated Meter – 50,000
Coil/Film Size – 1200 mm
Adhesive gsm = (Adhesive Consumed x 1000000) / (Coil x Meter)
Adhesive gsm = (100 x 1000000) / (1200 x 50000) = 1.66 gsm
Convert Pouch Dimensions in Meter
Pouch Height – 225mm / 0.225 M
Pouch Width (open) – 370 mm / 0.37 M
Pouch Area – 0.225 x 0.37
Printing Layer – 12µ Pet
Film Density – 1.4
gsm = 12 x 1.4 – 16.8
1 Pouch Weight in grams – 0.225 x .37 * 16.8 = 1.398 grams
Order Qty – 50,000 pcs / 50 Thousand
Total Printing Quantity – .225 x .37 x 16.8 x 50 = 69.93 (kg)
Trim Waste in kg = weight of roll x trim size in mm / roll size
Weight of Roll = 325 kg
Rolls Size = 875 mm
Trim Size = 15 mm
Trim Waste in kg = 325 x 15 / 875 = 5.57 kg
Trim Waste % = trim size / roll size %
Trim Waste % = 15 / 875% = 1.71%
Basic Calculation for calculating
– Film Size
– Cylinder Face Length & Cirum
– Raw Material required for job
Convert Roll OD to kg
Formula = pi x h x (R² – r²) x film density / 1000000
pi = 3.14
h = film / web / roll width
R² = square of Roll OD Radius (R = OD/2)
r² = square of Roll ID Radius (r = ID/2)
film density = BoPP 0.91, Pet 1.4, Foil 2.7
1st Layer – 12µ Pet Density 1.4
2nd Layer – 50µ LDPE/Poly (Natural) Density 0.93
How much 2nd Layer required for 250 kg Pet ?
2nd Layer gsm x printed Quantity ÷ 1st Layer gsm
(50 * 0.93 * 250) ÷ (12 * 1.4) = 691.96 kg
1st Layer Pet 12µ – 250 kg
2nd Layer Poly 50µ – 691.96
Final Laminated Material required 1000 kg
Job Structure 12µ Pet + 50µ LDPE
Pet Density 1.4
Poly Density 0.93
12µ Pet gsm = 12 x 1.4 = 16.8
50µ Poly gsm = 50 x 0.93 = 46.5
Composite gsm = Pet Film gsm + Poly gsm = 16.8 + 46.5 = 63.3
Pet required for 1000 kg Laminate = Pet Film gsm x Total Output ÷ Composite gsm
= 16.8 * 1000 ÷ 63.3 = 265.40 (kg)
LDPE required for 1000 kg Laminate = LD Film gsm x Total Output ÷ Composite gsm
= 46.5 * 1000 ÷ 63.3 = 734.60
Total Laminate (Pet + LDPE) = 265.40 + 734.60
RAW MATERIAL CALCULATION FOR 3 PLY POUCH JOB (CYLINDER, FILM, INK & ADHESIVE)
How to calculate NCO & OH required in kg?
Someone asked me if they have Adhesive ratio of 100:55 (Dow 2 component Adhesive).
Adhesive total Quantity required 100 kg for a particular job.
It’s a Very simple and basic Calculation.
NCO : OH
100 : 55
NCO = FINAL QUANTITY X NCO RATIO ÷ ( NCO RATIO + OH RATIO)
100 X 100 ÷ (100+55) = 64.52 kg
OH = QUANTITY X OH RATIO ÷ (NCO RATIO + OH RATIO)
100 X 55 ÷ (100+55) = 35.48 kg
Convert Roll kg to Meter to Meter Square Flexible Packaging using Excel Sheet.
In any Flexible Packaging job, we have to convert Running Meter or Linear Meter to Square Meter (m²). In this video you can learn and use Excel Sheet to Convert Linear Meter of Film (BoPP, Pet, LDPE etc.) to Square Meter. First we convert roll kg to meter using subjected Roll Width or Coil Size.