Plastic and Rubber

General Engineering (Manufacturing)

Plastic & Rubber

Injection molding is a process that involves heating plastic granules and injecting them into a die to get the desired shape and size of the plastic form. Plastic in granular form is fed from the top hopper, moved to a screw conveyer, heated to a moldable temperature, and combined to form a semi-solid shape. After that, the moldable plastic is extruded and pressed against a die of the required shape.

A plastic injection molding machine

Technical specifications:

Configuration of a plastic injection molding machine

Injection Unit

Screw diameter (mm)

30

Screw L/D ratio

21

Shot volume (Theoretical) (cm3)

88

Shot weight (P.S. Based)

80

Injection pressure (Bar)

1840

Injection Speed (mm/s)

85

Injection Stroke (mm)

125

Plasticizing cap (ps) @ max. speed (gm/s)

9.3

Screw speed (RPM)

0~220

Clamping unit

Clamping force (Tons)

80

Toggle stroke (mm)

320

Space between tie bars (mm)

365 ×365

Max. mould height (mm)

380

Min. mould height (mm)

150

Ejector stroke (mm)

100

Ejector force (Ton)

2.75

Ejector number

5

Others

Max. pump pressure (Bar)

150

Pump motor power (Kw)

11

Heater power (Kw)

5.8

Machine dimensions (L ×W× H) in m

3.92 ×1.08 × 2.04

Oil tank capacity (Liters)

185

Machine weight (Ton)

4.5