Blow Molding & Plastics Discipline

Since 1999

Blow Molding Help and Associates

Hydraulic Pressure Calculation:

 

Closing Pressure = 2.5 – 3.5 kgp per 1mm of cutting edge: 140 – 195 pounds per 1.00”  cutting edge of the cavity.

 

 

¶ ÷ 4 = .785

 

.785 × Cylinder Bore Diameter 3.147² = 7.774 × 2 = 15.548 Inches × 2000 = 31097.3 Pounds

 

 31097.3 Pounds ÷ 179.49 = 173.25 Pounds per 1.00” of cutting edge

 

 

 

3.14 × Diameter of Cavity = Total length of Cavity

 

Total Length of Cavity × number of Cavities = Total Mold Cavity length

 

3.14 ÷ 4 = 0.785

 

0.785 × Cylinder Diameter² = Inches

 

Inches × No. of cylinders × 2000 PSI = Pounds

 

Pounds ÷ Total Mold length = Pounds per 1.00” of cutting edge

Blow Molding Help

John Headrick

(919) 802-0005

E-mail: john@blowmoldinghelp.com