Typical Injection Molding Conditions English SI Metric
Temperatures
Rear Zone 330 – 360 °F 166 – 182 °C
Center Zone 340 – 370 °F 171 – 188 °C
Front Zone 350 – 380 °F 177 – 193 °C
Melt 340 – 400 °F 171 – 204 °C
Mold 90 – 150 °F 32 – 66 °C
Pressures
Injection 7000 – 11000 psi 48 – 76 MPa
Hold 4000 – 9000 psi 28 – 62 MPa
Back 50 – 100 psi 0.34 – 0.69 MPa
Speeds
Fill 0.5 – 1 in/sec 13 – 25 mm/sec
Screw 60 – 90 rpm 60 – 90 rpm
Drying
Time & Temperature 2 Hrs @ 175 °F 2 Hrs @ 79 °C
Dew Point n/a °F n/a °C
Moisture Content 0.10 % 0.10 %
  • This information is intended to be used only as a guideline for designers and processors of modified thermoplastics for injection molding. Because injection mold design and processing is complex, a set solution will not solve all problems. Observation on a “trial and error” basis may be required to achieve desired results.

  • No information supplied by RTP Company constitutes a warranty regarding product performance or use. Any information regarding performance or use is only offered as suggestion for investigation for use, based upon RTP Company or other customer experience. RTP Company makes no warranties, expressed or implied, concerning the suitability or fitness of any of its products for any particular purpose. It is the responsibility of the customer to determine that the product is safe, lawful and technically suitable for the intended use. The disclosure of information herein is not a license to operate under, or a recommendation to infringe any patents.