|
|
PLASTICS ENGINEERING COMPANY |
|
3518 LAKESHORE |
Compression Molding Guidelines
for PLENCO
|
Parameter |
Suggested
Press Settings |
|
Mold Temperatures |
143° - 166°C (290° - 330°F) |
|
Preheated Material Temperature |
32° - 66°C (90° - 150°F) |
|
Mold Close Time |
3 – 6 Seconds |
|
Clamp Tonnage |
27.6 - 41.4 MPa (2 - 3 Tons/in2)
Of Projected Part Area |
Additional Technical Information
·
A clean, highly polished, chrome plated mold is recommended.
Use a mold release such as Carnauba Wax, being careful to coat the entire
surface. After several shots wipe off
the excessive mold release using a clean, soft cloth.
|
Common
Molding Problems |
Potential
Solutions |
|
Blistering |
Increase mold temperature Increase
material temperature Increase
cure time |
|
Gas Burns |
Slow mold close time Check for
blocked vent(s) Lower
material temperature |
|
Short Parts |
Increase
preform weight Lower mold
temperature Lower material
temperature |
|
Sticking Parts |
Increase
mold temperature Increase
cure time |
The listed parameters
are suggested for use as a guide when setting up a compression molding machine
for molding